Effect of Ph on Food Preservatives Essay Example for Free

Effect of Ph on Food Preservatives EssaySodium Benzoate is a common food protective used in food products such as jams and jellies, soft drinks, pickles, condiments etc and in tinned products in the market. This experiment aimed to go out whether benzoic acid is fashion modeled from its superior soluble form sodium benzoate in stomach acid, which is simulated by HCl (pH=2). It has been seen that at a low optimum pH, i.e. in the presence of sufficient hydrochloric acid, sufficient benzoic acid is turn backed. The percentage yield is determined from the calculations of the theoretical (stoichiometric) calculations and the actual yield from the response. Also throughout the experiment, some basic laboratory trading operations such as measuring mass and volume, separating solids from liquids by vacuum filtration and drying solids atomic number 18 familiarized with.Introduction The answer of sodium benzoate and hydrochloric acid is a typical phenomenon of hydrolysis reaction which conforms to the principles of acid-base chemistry and stoichiometry. In a typical hydrolysis reaction, when a salt dissolves in water, the salt dissociates to its constituent anions and cations (benzoate and sodium ions respectively). Also, when strong acids like hydrochloric acid dissolves in water, chloride ions and hydronium ions are formed.Hence in the reaction involving sodium benzoate and hydrochloric acid solution, in the presence of high concentration of hydronium ions, protons pass on be transferred from the strong acid H3O+ to the basic benzoate ion. This will yield benzoic acid, C6H5COOH which precipitates from the solution as it has a really poor solubility (0.34g/100ml). The fundamental reaction is sketched out below As can be seen from the difference in the pKa values, H3O+ is a much stronger acid than benzoic acid. So, the equilibrium of the reaction strongly favours its completion and hence hydrochloric acid which ideally simulates the acidic conditions of th e stomach, does interchange benzoate to benzoic acid.Safety Throughout the lab safety goggles, protective gloves and aprons were worn period carrying out the experiments. While transferring the HCl to the reaction vial in the student hood, the gallery must never be inside the glass hood as vapour inhalation can cause choking hazard and irritations. Also the hosepipes were carefully plugged in and out of the filter flask to avoid breakage or tipping of the Hirsh funnel.Experimental For this experiment and basic operations, calibrated Pasteur pipettes, a 5ml conical reaction vial, agree glass, stirring rod, electronic balance, small test tube, Hirsh funnel, filter flask and filter paper are used. The procedure for this experiment appears on page 7 of the lab manual, Multiscale Organic Chemistry (4th custom UB edition)3.As the primary objective of this experiment was to find out whether sodium benzoate reacts with simulated stomach acid to form benzoic acid, the results clearly in dicate that a successful reaction close to completion, if not fully complete, has taken place. The percentage yield calculation reveals that approximately 90% of benzoic acid as white precipitate were recovered from the reaction.There were a number of factors which might sacrifice contributed to the 10% deficiency in the lowest yield. It needs to be mentioned though that a percentage yield of less than 100% is achieved because the drying of the solid mass after vacuum filtration was sufficient to give a practical number. During measurements of mass of benzoate and benzoic acid when its formed, there were obvious human errors involved. Some benzoates were lost while transferring to the conical reaction vial from the watch glasses, and further loss of the product benzoic acid might have taken place when the solution mixture was tipped on the Hirsh funnel.We couldnt determine if the reaction was complete or not, so we might not have had all the salt converted 4. The solution might no t have sufficiently and gradually cooled though every effort was made for that, hence there could be lack of benzoic acid crystals forming. The litmus test might have contributed to a significant loss of the precipitate, but only one instead of multiple tests were performed to see if the reaction mixture was acidic enough. Given the carefully controlled experiments and the 90% yield, it can be deemed that the methods used to perform the experiments are full proof and performed as immaculately as possible.Conclusion The fact that a new totality is formed indeed when sodium benzoate is placed into a simulated stomach acid has been demonstrated successfully with the aid of the experiments and aforementioned results. A 90% yield suggests that all the basic operations were carried out as neatly and carefully as possible and measures taken to minimize obvious errors which could take place while performing the experiments. All in all, the experiment provided a practical evidence of the th eory behind the hydrolysis of sodium benzoate and percentage yield of its product.

Radio Frequency Identification [RFID] Essay Example for Free

wireless Frequency appointment RFID EssayRadio Frequency Identification RFID is considered the biggest advancement in supply chain management since the first barcode was s cannisterned in 1971 (Waters). RDIF is based on engineering that has been in apply since the 1940s and World s bargain ratee of war II. More recently, RDIF quest afters nurture been utilize to track wildlife and to allow speeding cars with Smart Pass stickers to breeze through toll booths without having to stop (Enhance Your Supply Chain with RFID). however within the past few years has RFID been considered for supply chain applications (Kirk). RFID traverses atomic number 18 already being used on shipping pallets, conveyor bins and totes, and packing cartons (Logimax). RFID tags harbour been embedded in the ears of pets, stemma, and wildlife (Walton), to track school children (Best), and for vehicle tracking systems (WhereNet). Currently, the most common use of RFID engineering science is to trac k assets such as desks, office equipment, and oppositewise strain items. About 73 sh be of all RFID chips are currently used to track assets (Logimax).That partage, however, may eventually change. Kirk noted, E very(prenominal) industry volition eventually identify a practical application for RFID, but prices lead need to come down in frame for m each industries to consider the engine room for enterprise-wide development. The technology received a big boost towards universal acceptance when it was adopted by Wal-Mart, Inc., the worlds largest companionship. Wal-Mart leave alone require its major suppliers to include RFID tags on their yields beginning January 1, 2005 (Barlas).For the block up user, the concept behind RFID is the same as the concept behind the barcode. Information is recorded onto an RFID tag that is either attached to or embedded into an item. The recorded entropy may then be retrieved when the tag is scanned. For end users, the most significant dif ferences between RFID and barcodes pass on be ease of scanning and the ability to update discipline.The workhorse of the RFID system is the small radiocommunication transponder, called a tag, that is either embedded in or attached to an object. The tag consists of a littlechip attached to an antenna. The RFID tag transmits a low-power radio signal that is picked up by the scanner, which is essentially a radio transceiver.RFID is a new technology of storage of identified information about trade good, cargo, result or, for example, player of adept about conference. Information is recorder on a micro scheme and to chafeher with small antenna is placed at/inside of few material. As a result, some token, label, tag take cares, which is adapted to transfer recorder information for a small space.It is natural that to read information from RFID-bearer we need schooling or, as it is called, interrogatory device. This device has an antenna and can be fixed or portable like scanne r for reading of bar-codes. Actually, RFID is a further development of technology of marking with help of code-bars. The advantage is that radio allows reading information in conditions of absence of direct visibility between devices of reading and transferring of information. It means that reading of information with the help of RFID technology can be automated and to commence place without direct participation of people.RFID is integrated with whatever system of coordination, and read information can be recorder into database. You can place inside of RFID-bearers any data, they can be mediators for transfer (synchronization) of information between different information systems. RFID-bearers can custody in memory the history of origin (genealogy) of the product, what allows using them together with other devices in order to increase automation level of build and to preserve from mis films in this cover.thither are several(prenominal) types of RFID-bearers. Before you choose an y, you need to compare basic technical characteristics of RFID system and standards, which exist in the government regarding frequency regulation. There are cardinal types of RFID-bearers active and passive. Active RFID tags contain a small battery that is good for about 20 hours of transmission quantify. Active tags have a longer transmission range than passive tags. They are used when the tag will only be needed for a limited amount of time and/or there is a limited amount of data to store and pass. Active tags are available in read-only or read-write versions.The of import characteristics of active tags are accumulator power supply data transfer for distance of 8-30 meters the cost is approximately $20-70 per for each one gap to find its location in the system of both coordinates the example of physical exertion are cashier posts in supermarkets. The characteristics of passive RFID-bearers are power supply from reading device data transfer for distance from several inches to 7,00 meters the cost is approximately $1 per each assignment of separate products the example of economic consumption is system of stock-taking. Passive RFID tags wake up when they are scanned. Because they have no battery to wear out, passive tags will last for the life of the object to which they are attached. Passive tags come with either read/write or read-only capabilities. mostly all the lecturers follow the basic architecture as shown below.RFID systems are proposed to be used mainly in frequency ranges which dont need to get a license, so it helps to decrease the cost for their application. There are several radio ranges like these 125/134, 2 kHz, 13, 56 MHz, 900 MHz and 2, 4 GHz. The distance to read information from the bearer is mainly observed by area where it is used. Nevertheless(prenominal), bearers which work at long and short waves, can transfer data at distances from 2,5 till 50 sm passive bearers in frequency range of 900 MHz, work at distance till 7 meter s, and in frequency rages from 30 sm till 2 meters.The 13.56-MHz tags hold as much as 2,000 bits of data, or roughly 30 times the information of 125-KHz tags (Brewin). There is currently no FCC standard for RFID tag frequencies, although cookrs are working towards developing standards that could be universally accepted. Sony and Philips have agreed to develop technology operating at 13.56 MHz. The U.S. Federal communications Commission (FCC) and Chinas State Radio Regulatory Commission have agreed to support the 434 MHz radio-frequency band (Spiegel Supply Chain Management Review)We need to take into account that distance of action in many respects depends of material in which RFID-micro scheme is placed. Micro scheme is tuned for a certain material. In moorage youll put micro scheme for car windscreen, working at radio range 900 MHz, in a wooden box, there will be some difficulties to read information. Radio-specialists know also that any radio range correspond to certain anten nas.RFID just stared to be used in the modern society, mainly in sell trade and storage service for automatic stock-taking.On every interesting story took place in 2003 with a famous electronic manufacturer Philips Electronics and manufacturer of raiment Benetton. In the end of March one of directors of Philips Semiconductor gave information regarding their plans for the close future. Particularly, he told that Philips will supply 15 millions of RFID chips to Italian order Benetton, which, in its turn, will use them in their production, selling in their own trading network consisting of five thousand shops over the world. They told that any kind of clothes which costs more then 15 dollars will have RFID chip, realized on basis of piffling micro scheme Philips I.CODE.Although RFID chips are widely used in manufacture processes of Dell computers or automobile giants like Toyota and Ford, new initiative for fashion industry is the large-scale operation. Many famous firms like Pra da, Wal-Mart, Tesco already use RFID technology but in smaller quantities. The micro scheme I.CODE will be pressed into smart teg in the process of clothes manufacture.Benetton cute to put information about a model type , size, color and destination in order to watch the way of every piece from manufacture and storage till retail. I.CODE chip has 1024 bytes of re-writing information (EEPROM) and works at frequency range 13,56 MHz. One can read information from micro scheme at distance till 1,5 meters (conditions of direct visibility are not obligatory). For the second of 2003 Philips sold approximately more then half a milliard of such micro chips to different customers. The wholesale price is less then 20 cents per each (Richard W. Boss).Naturally, new initiative of Benetton aroused aversion from people who considered it a violation of privacy. The caller agreed that there is not much use from such tags, and tried to find a way to deactivate chip at the moment of commodity sale, in case there will be a lot of protesting customers. For the moment, the only way out to get rid of tag at your recognise is to cut it off from the product.What are advantages of using RFID tags? permits imagine that such tags will be inside of any product which is in supermarket you just take the necessary thing and go out without long queers to cashier and other benefits of modern trading system. When you go out from the shop, there is a device, which makes reading of information regarding the price of your shopping from commodity tag and from tag which is in your credit card or passport, and the bill they will send you directly rest home. It is very convenient to the seller as well, because it helps to simplify the process of trading. This example is the simplest one. They plan to use RFID tags almost everywhere starting from books and clothes and finishing with money bills (European Union, 2005).Their usage will help to simplify and automate many routine operations, which we make every day. Besides, RFID tags usage will help to increase effectiveness of many processes. Lets imagine that the buyer of clothes with such tag will come, wearing these clothes, to another shop of the same company (remember Benetton with its trading network) computer will scan it, read the tag and will get the information from internet from central database regarding what this man have bought last time and what they can offer him in first turn.But, as think numerous members of societies for human rights defense, RFID tags in clothes of human being can be used incorrectly the government will be able to watch dislocation of people (RFID scanners will be added to places where there are a lot of people such like thermionic vacuum tube stations, squares, crossroads, etc), as well as hackers, freackers and others can use the tags with bad intentions. Access to databases will allow, without any doubt, to identify personality by tags, and this is loss of privacy. Still, it will ta ke time to make the usage of RFID tags in such a way nowadays RFID tags and equipment are quite expensive and not so popular. There is adventure to put inside the chip a device or program, which will deactivate tag by customers wish. By information of CNET agency, gentle wind company Delta Air Line invests 15-25 million dollars in integration of RFID technology in its system of luggage processing, After the system will be installed, agent will be able to control dislocation and motion of passenger luggage from terminal of company, where they will put a radio tag polish point (name of airport). The only difference of this new technology is that passenger at least, will know where is his luggage.Now the systems is as follows radio scanners read information from tiny RFID tags, are installed in zone of passport control, along the belt of transporter which moves the luggage to cargo airliner, and finally, near the doors of cargo liner. Preliminary tests made by Delta Airlines by ro ute Atlanta-Jacksonville, have shown that operator is able to follow up the cargo almost all the time, when the cargo is at zone of his responsibility. Quite possible, that in the nearest future this possibility will have passengers as well (Richard W. Boss).Nowadays, Delta Airlines looses four suitcases from every thousand, which costs more then one hundred million dollars per each year, spent for search of suitcases and compensation of lost things. Considering the fact that Delta, like many of American air companies experiences some financial problems, possibility to cancel these expenses from their budget was the main factor for management of company for such innovations.RFID is often used in circumstances, which can be called unusual. For example, not long time ago credit of animals and move tags at them was considered to be a novelty. Tradition of such strange usage is increasing.In Las Vegas were held tests for electronic management and identification of value in BlackJack spicys. each chips-stakes in system Safe Jack contain components Hitag from Micron Identification Austrian company, belonging to Philips. When the player puts tag in the field of stake, they are accept and the stake is taken. Several chips can be recognized even if they are put into pile. Given card game are recognized automatically, so every game is under control. Increasing of safety and protection from cheating, collection of statistic data as well made a number of casino owners to show interest to such an interesting system. Because Safe Jack doesnt prevent a usual way of game, players adopted new system and moreover, novice usage of technology in this field added to the game attraction.These RFID tags will help also to avoid false casino dibs. Usually owners of casino used colors luminescent in ultraviolet. such(prenominal) protection wasnt effective enough, so from time to time they were forced to change all the casino dibs, and this procedure not only costs a lot of money, but irritates casino players as well. This idea will prevent robberies from side of stuff as well and owners of casino will get luck to watch players which squander money and will have a chance to work with them in order to force them spend more money, for example, proposing them a direction in hotel or free drink.Nowadays, the researchers develop works, which will allow finding out if this system will be also good for other games (Richard W. Boss).German company Metro Group also starts RFID identification at chain of supply of its production. Twenty suppliers of company will deliver identification tags to their distribution centers. caller-up declared that will start to use new technologies on computer basis and information technologies of IBM corporation, which will be used in order to tolerate standard infrastructure of deliveries in process of manufacture and delivery during collecting, analysis and management of information regarding supplies, received with the help of iden tification tags and reading devices.Means of identification will lift up the industry of retail to a new level, these are words of Gerd westward, manager of project Metro Group hereafter Store Initiative. Taking into account Metro, this system will provide constant control under the process of delivery in internet, which will allow the sellers to determine exact dislocation of commodity at any stage of delivery process from supplier to distributor storage facilities and centers.The Metro supermarket in Reinberg is full of technical novelties, which make contact of shop with the customers more personalized. The customer can take in the entrance to the shop a small computer, a personal helper. Gerd Wolfram enters code of his loyalty card inside the computer. We can see personified greeting note and proposition of special individual discounts. Really, I buy this kind of profit very often, tells Gerd, the technology allows us to give personal promo-offers, which the customers lik e very much (Richard W. Boss).The clever court has other functions as well. For example, we can send from home computer a list of products (About 61,3% of customers in Germany prefer make shopping in accordance with a list), and when youll authorize your loyalty card, the list will emerge at the monitor. The computer will play a role of navigation system then it will show direction to the noted product.All shelves in supermarket are supplied with electronic prices (there is about 37000 of prices). Some of them contain two prices usual and with discount. You can refresh information for prices very quickly, notes Wolfram and goes to information desk. There are 16 such desks in supermarket. Wolfram puts to scanning device of terminal a bottle of wine. The monitor displays information about manufacturer region, recommended temperature of storage, etc. If we put there meat, monitor displays schematic picture of caw, and the back flashes. The screen offers to look through and to print the recipes.All these 16 RFID terminals give the managers an fortune to watch all dislocations of people inside the supermarket. People, who took the commodity with RFID chip. It shows how many minutes he spends, how he is going, what is he interested in. Advertising displays react to this customer as well when he approaches, different advertisings are been played but they consist of information that interests the customer. RFID helps against thefts as well. Within 10 years RFID system will appear on all commodities, optimistically notes Wolfram.We go to cashiers. You can pay with a help of cashier or scan the commodity by yourself with the help of interactional sensor monitor. The buyer scans commodity and puts it into a plastic bag, which is located on a special device controller. In case somebody forgot to scan a commodity and put it into the bag, the system will remind him. Besides, the process is controlled with help of video cameras, notes Wolfram. Device takes credit cards and cash. With the help of this system we managed to make process of client servicing faster (Richard W. Boss).In the middle of November the biggest world trading network Wal-Mart and manufacturer of cosmetics Procter Gamble were in the centre of scandal as a result of high-tech. They put in one of supermarkets in Tals as experiment, a shelf with delineate Max Factor LipFinity, each package of which had RFID tag. Besides, they put a web-camera, which allowed specialists of company-manufacturer to watch the process of trading.The re extraditeative of lipstick manufacturer explained We wanted to understand, if this technology will help to provide availability of our production on shelves. We know tat our clients are irritated when they cannot find necessary product which is absent or isnt in the right place. Control of commodity in real time almost without participation of human is able to influence the lots of trading and concurrent struggle, simultaneously decreasing the m anufacturers expenses. The customer who bought a lipstick with RFID tag and who has it in her bag, will be noticed during her next visit to the shop.This scandal, possibly, will be an obstacle in the way of usage of RFID technologies in retail networks, but RFID tags are already used where the keep backers of private life dont have access. First of all, RFID technologies are used in non-contact access cards and tickets. Here is used a high principle of high-tech application dont want dont use. Sure, you can avert from high-tech access card or a ticket, but at the same time youll loose work or discounts for travel.The manufacturer of domestic electric automobile appliances company Merloni is ready to supply washing machines with system of support of RFID tags because tags can contain coded recommendations for washing.Company Goodyear plans to supply with RFID tags tires, which it produces. Here tag should reflect their basic features, as well as height of protector and pressure. Quite probably this will be for tires for commercial transport (trucks).Russian company Luxsoft develops connections between RFID tags and sensor networks (networks of miniature sensors, possessing calculation possibilities, means of wireless connection and number of sensors) it will allow in perspective to add into tags additional information, for example, about temperature or humidity at separate stages of transporting. The Ministry of Defense of the United States, which is known for its love to new technologies, announced that till year 2005 all suppliers of USA army should put on commodity, nevertheless of friable products and big volumes of liquids, by RFID tags. By opinion of military, this approach will allow to improve control for commodity presence and for its supply. Still, dont stymy the fact that spies will have possibility to watch the dislocation of military supplies and separate subdivisions.Basic tasks in library business are to prevent robberies, to make a databa se for books and cd-s, and search some definite books with certain criteria. All these tasks cannot be fully realized with help of barcodes and usual means of theft prevention. The French company Tagsys offers specialized decision for libraries. RFID tag realizes simultaneously all these functions and allows keeping information regarding definite book or CD, for example, place where it should be kept. The system consists of the following moveTerminal for reading of barcodes and reading/writing of radio tags.It allows connecting a usual scanner of barcodes and presents convenient and quick transfer of information from barcodes to RFID tags. Scanning of barcode, arranging of RFID tag and activation of safety function is made within one second. With the help of terminal we are able to read and program new RFID tags by any kind of data.Terminal for simultaneous reading of several tags (till 16)This is terminal for table of registration. Is has more functions than the previous one. It consists of separate control block and one or two antenna. It allows scanning till 16 RFID tags at the same time, what allows fastening in dozens of time work with clients.System of safety.System of safety in order to prevent theft of books, which dont have activation of safety in RFID tags. This is an independent device, consisting of two posts, which is able to produce controlling signals to close the doors, recording of camera or give siren signal. It can be put on any surface, which doesnt conduct current.Barcodes can only hold a relatively small amount of information. RFID tags can hold much more information, including serial numbers, shipping information, name, price, and any other information that might be expedient for a specific purpose. Unlike barcodes, which cannot be updated as the product moves from place to place, the information on RFID read/write tags may be updated as the product passes through the supply chain. Updates may include logging the time of receipt, sale s order numbers, quality control information, or even data that would allow the tag to serve as a bill of lading for shipping (Logimax).Proponents of RFID point out that the system boosts productivity and is cost-effective, eliminating scanning times required by barcodes and trim down paperwork. RDIF is fast, although not as fast as some may believe. Current RFID readers are reported to read up to one hundred fifty tags per second, not thousands (Kirk). Still, scanning 150 tags per second with RFID is much faster than the time required to scan 150 barcoded items.In inventory management alone, Logimax estimates productivity gains in the 5 to 10 percent range. Additional time would also be saved by being able to know exactly where product is along the supply chain on the shop floor, in the warehouse, or in the store. WhereNet estimates that RFID can reduce the delivery chain by 1 to 3 days. If companies deploy RFID and data synchronization, the total savings on improved information can reach $200 to $400 billion (Spiegel,RFID and data sync seen delivering billions in savings.). Kirk is more conservative with his estimates, noting that early adopters of RFID technology have seen 3 percent to 5 percent reduction in overall supply chain costs and 2 percent to 7 percent increases in revenue from inventory visibility (Kirk).Kirk lists five ways by which RFID improves productivity and increases profits cut back labor in high-volume product identificationReduced labor in lot trackingIncreased information accuracy throughout the supply chainAutomated proof of deliveryReal-time inventory levelsThe power of RFID could increase exponentially when the tags are linked to the Internet. A article from Sun notes that information on RFID tags could be hyperlinked to additional information, including manufacturing batch and production history, product handling instructions, storage or delivery instructions, expiration dates, and other details. The possibilities are limited only by the imagination. (Enhance Your Supply Chain with RFID).Kirk, however, points out what RFID is not suitable of doing. RFID can tell the distributor if the product is in the warehouse, what time it arrived, and when it is expected to leave, but it cannot locate an item. RFID is not a Global Positioning System GPS (Kirk, focus as it appears in the original). RFID may, however, be used along with a GPS system to locate items with an accuracy of 10 feet. RFID radio waves cannot penetrate liquids, may have extend penetrating metal, and may pick up interference from electric motors and other electromagnetic devices. These potential limitations could affect how RFID will be used in some production facilities and warehouses.The benefits of RFID come at some price. Spiegel reports that suppliers to Wal-Mart and the Department of Defense and their customers will need to spend $3 million to $35 million implementing RFID in 2004 (Spiegel, R. RFID and data sync seen delivering billions in savings). Per unit costs decrease with volume, which is why Wal-Mart can afford to implement the system.Smaller businesses might not be able to afford the upgrade to RFID. For those who will not be buying literally billions of RFID tags at a time, the low-end cost is about 30 cents per tag, depending on the type of the chip, how it is housed, and the volume purchased. More durable tags that are designed to withstand the harsh environments found in manufacturing applications can cost between $2 -$4 each at volumes of tens of thousands (Kirk).Prices for tags and other RFID technology will no doubt drop over time. Early cell phones and Palm Pilots were much more expensive and did much less than models that are sold today. Eventually, prices for RFID tags and systems will almost certainly drop as use of the technology becomes more widespread.As with any new technology, there are some concerns regarding issues surrounding protective covering and abuse. RFID tags can carry a lot of infor mation, including an items manufacturing and distribution history. Tags could also record credit card information, which presents another potential security risks. In order to be able to meet the demands of industry, RFID tags must transmit indiscriminately to any scanner that is in the area. Tags and scanners could be misused to gain unofficial information.There are also concerns about privacy. Actually, all rumors regarding unsanctioned usage of RFID tags are a result of ignorance of different things about RFID technology. It is not a mystifying that practice to implant tags to people in USA and Mexico.In 2002 company Applied Digital Solutions got right to sell microchips VeryChip, which are implanted to people and containing his identification code.This code can be connected with database, where any kind of information can be contained, as well as any medical data. The head is that such chip is a possibility to get medical help in time for many families, who have ill people at home, or for example, to find a person until he gets into trouble.From the other side, and this information can be confirmed by any expert in this field,- it is possible to defend from RFID tags. The idea is to make a jammer which will be able to oppose the reading device. Sure, the best way is to make it in the image and likeness of RFID tags. The jammer should present a device, copying work of radio-identifying micro schemes, with the only difference that it should present as a reply for requests of scanners not correct information, but some unintended garbage.Two moments are important in work of such device. First of all, it should understand requests of different scanners. Second of all, the best way is to give as termination for one request a lot of answers simultaneously. This is supposition that in such situation scanner will simply confuse. This idea belongs to company RSA Security, which for the present moment is researching it in its laboratories and plans to make test micro schemes in the nearest future. So, actually, strugglers for freedom can sleep with calm. At least, this not so revolutionary technology will not bereave them of freedom.Rumors about RFID technology being used to track products to the homes of individuals are probably exaggerated. The limited transmission range of the chips and the lack of GPS capabilities rules out any feasible use of RFID as a system for tracking individual items beyond the store or warehouse. Wal-Mart will be using RFID to track pallets and other shipping containers and not to track individual items. Wal-Mart had explored the possibility of using Smart Shelves equipped with RFID to indicate when inventory was running low or to detect the possibility of theft. Gillette announced that it would work with Wal-Mart to develop packaging that was compatible with the Smart Shelf system. However, the project was deferred after concerns over consumer privacy were raised by consumer groups (Gilbert).Organizations that use RFID will save money in the long-term through increased productivity, decreased inventory loss, and more reliable tracking of inventory. However, these long-term benefits will only be reaped by those who can afford the high start up costs of the technology. There is currently no race to the bottom for RFID technology. Although the price of tags may have dropped since the first tags were introduced, these savings are typically realized only by those organizations that are large enough to buy large quantities of tags literally billions at a time. Smaller firms will continue to pay higher prices for RFID tags.High cost of implementation combined with the tendency of some organizations to stick with proven technologies until all the kinks are worked out of the latest generation of products means that barcodes will continue to be in use for some time. It is unlikely that the barcode scanner at the supermarket will be replaced with an RDIF scanner in the near future, although RFID could easily be used for that application. It is more likely that the two systems will exist side-by-side for some time to come, with RFID being used for manufacturing, shipping, and other large-scale business purposes and barcodes being used for smaller, more individual applications, such as pricing individual items.So, a short summary for usage of RFID tags will be as follows By some forecasts, year 2005 will be decisive for RFID technologies we expect decrease of prices XEROX announced the new order of jet-print of RFID tags. Till 2007 market of equipment and service for RFID will be more then 4 milliard dollars. This fact proves the concept that RFID technology is very perspective and has numerous variants of usage. info of RFID tag can be re-writed and added, it can be classified tags are more long-termed the location of tag isnt of any importance for tag reader the tag is better protected from influence of environment. In case the RFID scanners will be systematized and work in all used frequencies, the usage will be simpler and more effective. So, finally, we can conclude that RFID technology has a great future.Works CitedBarlas, Demir. Wal-Marts RFID Mandate Line56.com June 04, 2003. Online. 13 magisterial 2004 http//www.line56.com/articles/default.asp?ArticleID=4710Best, Jo. Schoolchildren to be RFID-chipped Slicon.com 8 July 2004. Online. 13 August 2004 http//networks.silicon.com/lans/0,39024663,39122042,00.htmBrewin, B. Radio Frequency Identification Computer World. 16 December 2002. Online 13 August 2004 http//www.computerworld.com/mobiletopics/mobile/technology/story/0,10801,76682,00.htmlEnhance Your Supply Chain with RFID. Sun. Online 13 August 2004 http//www.sun.com/br/manufacturing_1120/feature_rfid.htmlGilbert, A. Major retailers to test smart shelves CNET News.com 8 January 2003. Online 14 August 2004 http//zdnet.com.com/2100-1103-979710.htmlKirk, Julie. Pennies a Tag Making Cents Out of RFID Myths. White paper. Applied Creative Technologi es. may 2004. Online. 13 August 2004 http//www.appliedcreativetech.com/pdfs/RFIDMyths.pdfLogimax Making Sense of RFID White paper. Online 13 August http//www.e-logimax.com/downloads/l_making_sense_of_rfid.pdfSpiegel, R. RFID and data sync seen delivering billions in savings. Supply Chain Management Review 1 May 2004. HighBeam.com Database. 13 August 2004. http//www.highbeam.com/library/doc3.asp?DOCID=1G1118850308Speigel, R. Supply Chain Management Review 8.5.66. ProQuest Database 13 August 13, 2004. http//gateway.proquest.com/openurl?url_ver=Z39.88-2004Walton, Marsha. USDA steps up efforts to track livestock CNN 28 May 2004. Online. 13 August 2004 http//www.cnn.com/2004/TECH/science/05/24/animalidentification/index.htmlWaters, Jennifer. Wal-Marts muscle advancing use of RFIDs Investors Daily 6 July 2004. Online. 13 August 2004 http//www.investors.com/breakingnews.asp?journalid=22013065brk=1WhereNet. WhereNet Automates Vehicle Tracking and Management for Automotive OEMs 10 August 2 004. HighBeam.com Database. 13 August 2004 http//www.highbeam.com/library/doc3.asp?DOCID=1G1120383879Richard W. Boss, RFID Technology, Public Library Association (PLA) Tech Notes

Energy in a falling mass on a Spring Essay Example for Free

Energy in a falling mass on a Spring EssayThe aim of the experiment is to design a temperature measuring device, apply a Wheatstone Bridge, with two fixed resistors of 47 ohms and and so to implement it. The idea is to end up with a comprehensive set of results which allows us to field out an bonny, and therefore diagram graphs to show the different variables. Preliminary work Before I started the actual experiment, I did some preliminary work to find out the best set up for the appliance I was using. It was also to test out the different apparatus that was available to me and to build a circuit which was set up to do the task which was required.Preliminary Diagram The apparatus was set up as shown below Preliminary Method The apparatus was set up as shows above, and then filled the beaker to half full with iced wet. I then put the thermometer in the water and added more ice until the water temperature reached zero. then(prenominal) I put the thermistor in the water and waited until the ammeter reading was constant, and then adjusted the resistance using the variable resistor until the ammeter read nought. Then I recorded the resistance at that point.I did this once for each temperature. I decided that a reading every ten degrees was the optimum range, as this would give me a good set of results, without having too much information which I would not need to use. Diagram of experiment Method of experiment I used the same basic method as the preliminary experiment, with the following alterations I did three repeats to find an accurate average result, which provide enable me to plot graphs showing different factors.I used the results from the preliminary experiment to predict the resistance in the actual experiment, and I set the variable resistor to that resistance, then adjusting it slightly until the ammeter reads nought. I heated the water with a Bunsen Burner as this is quicker than leaving it to warm normally. I was able to do this as I knew w hat I was doing, due to the fact that I had done the experiment before in the preliminary. It also gave me time to do more repeats. Safety Safety is an crucial factor to consider while doing this, and any other experiment.As we are using Bunsen Burners, heat proof mats will be used, as will safety goggles. The electrical apparatus will be kept well away from the flame. Gloves much be worn when handling the beaker when it is hot to avoid burns. as well as books will not be kept on the benches where apparatus is set up, and loose clothing/hair will be tied back. A sane approach will be taken and behaviour will be in line with the lab rules laid down by the college. Background physical science/Own knowledge Wheatstone Bridge This circuit enables resistance to be measured more accurately than by the digital ammeter.It does not rely on the accuracy of instruments, but resistors of a fixed known resistance have to be used. The four resisters used are called P, Q, R, S. The ratio bet ween these resisters is P R Q S The resistance to be found is P. Here is a diagram of a Wheatstone bridge Thermistors Thermistors are made out of semi-conducing metals because the resistance of these decreases with an increase in temperature. A thermistor is a resistor, and its resistance changes when its temperature changes.When the liquid the thermistor is in increases in temperature, the atoms in the head of the resistor get more energy and as a result they vibrate more, increasing the number of electrons which lowers the resistance. Microsoft Excel I will use Microsoft Excel to present my data in table and graphical form. I shall also use it to work out the following Sensitivity, average resistance, resolution and reaction time. Once I have this data, I shall present it graphically using excel, and I shall draw the following graphs using the data I have worked out Temperature vs. Sensitivity (1).Preliminary resistance vs. temperature (2) Average resistance vs. temperature (3) An alysis From my results I can see that as temperature increases the average resistance decreases. This can be clearly seen on the graph, which has an exponential shape. I have no anomalies in my average resistance, as the line of best-fit on the graph passes through all the error bars. I think that overall the experiment was conducted and executed well with no obvious disastrous inconveniences. There was however, a very small problem, which I encountered during the course of the experiment.The original thermistor that I began to use for my preliminary experiment decided to step down to function. This resulted in a loss of time, as I had to repeat my preliminary experiment so that any results conducted were not fair. Conclusion The displacement increases and the velocity increases then decreases. The same happens with time and height. Displacement increases and the total energy decreases minimally as the energy is transferred to heat while the elastic capableness energy increases a nd the gravitational potential energy decreases.Kinetic energy rises and falls as the spring is dropped and gathers speed before the spring takes the tension and slows it down. I conclude that energy cannot be lost, but transferred from one form to another, and this experiment proves it. Show preview only The above preview is unformatted text This student written piece of work is one of many an(prenominal) that can be found in our GCSE Electricity and Magnetism section. Download this essay Print Save Not the one?

Strategies to Strengthen Memory Skills

Strategies to Strengthen remembrance Skills retentiveness is the power or border of remembering what has been learned. It can be bunches of information that youve learned from school, internet, and experiences, either neat or bad. store is like a very big storage in our head. You yourself lead be shocked from the things that atomic number 18 in store with it. When we remember or draw something, our retrospect is involved to it. Our recollection is an essential in our insouciant lives, because once our storage failed to function, we provide experience difficulties in remembering faces, numbers, and even directions. Wont it be a burden for us and for others too?As we get older, the cap powerfulness of our warehousing fades away. As a human being, our memory bequeath be needed for a lifetime in every elemental ways we do. Our memory is very classical in order for us to get into school, university, and get a cargoner or profession that we want. The job of our memory does in remembering wholly depends on our actions. Daily aspiration of healthy foods will make our memory function priggishly. We dont still discharge to fill our stomach. We essential consider the nutrients that we get from it to become physically healthy, and mind healthy. Food isnt scarce enough. It requires teamwork with vitamins that will further make us healthy. Memory in addition needs energy to work. Aside from food, enough sleep after a recollective tiring day is a moldiness. Just like our body, it in any case gets tired if overused. Physical and mental exercises also contri besidese to a good memory. Our memory also needs to be trained so it will be in good condition. We socialize every day, every hour, and every minute. Having an active interaction with the same or opposite gender will pro- recollective the stored memories in our mind.Memory is very principal(prenominal) yet, losing it is common these days. humanity be careless about their food intake. They exclu sively eat whatever they want or whatever satisfies their tummies. Theyll proceed in front of computer and manipulate their accounts in social networking sites for such a long time and allow to make believe an active lifestyle outside. Humans dont mind if they sleep or non. Some dont like analyzing or mind challenge because they are too bored to think. They dont socialize that much because it will lone(prenominal) be a hindrance on what they do. If this cycle retains, it wouldnt be shocking that nigh of us cant remember a single thing anymore. Before it become worse, we essential enhance our memory as early as we can. Enhancing it will be a good prevention for memory loss. It will benefit not upright us, but also the other hoi polloi almost us. Enhancing our memory will succor us in every simple way as much as possible.Memory enhancement might not matter now, but we will realize later(prenominal) that it is a great investment for future. Considering the factors of memory enhancement like eating healthy foods and regular intake of vitamins, doing exercises, implementing good sleeping habits, and even socializing will result to a healthy remembering. When we take an examination, we think carefully of the answers. We know the answer a bandage ago but we forgot it just now. We need to take down notes or a memo but the pen went missing. We keep looking for it but it is just behind our ear. Isnt it frustrating to experience these situations? It wont be impossible to happen if we dont enhance our memory, now.Review of LiteratureMemory plays an important break apart in our daily lives. It is involve in remembering faces, numbers, directions, facts and a lot of information we gather. Just like our body, our memory also have needs in order to live and do its purpose. Memory loss is so common these days. In order to remedy our memorys performance, we must consider taking care of our health, implementing good habits and often socializing. If it is used, it will continue to change throughout your lifetime (Buzan T., 1991).According to (Eastway R., 1991), one thing that is fundamental to a good memory is the health of the brain in which it sits. If our body needs good diet, so does our brain. in that location are kinds of food that will help us in improving our memory. One example of that is fish. Oily fish is the top scorer in foods that contain Omega-3. Fish also contains a fatty irate called DHA, which increases the levels of acetylcholine, a vital carrier involved in the memorys function. some other one is food that contains anti-oxidants. Some people are unaware of what they take. in that respect are some toxics that we unconsciously eat that can cause fundamental damage in our bodies, including our brain which is mainly responsible for our memory. Carbohydrates from bread and cereals can help to improve alertness, and the ability to form new memories and to retrieve the old ones. We are physiology different from each other, and what benefits in one person will not needfully be the same for each one of us. Fish, anti-oxidants and carbohydrates will boost an average memory performance. The newest or the modern way to enhance our memory nowadays is taking up drugs. It can help but we must be careful in differentiating memory boosting drug and drugs that dont retrieve old memories.If we were real good thinkers, (Gordon B. Berger L., 2003) states that we wont neglect mental workouts. Jigsaws, crosswords and Sudoku are can be seen in the newspaper every day toentertain us. Behind those sheets are ways for an alert and smart mind. Regular mental exercises build ups the brain, same as how physical exercise builds muscles and strengthens the heart. Treating your body well can enhance your ability to process and recall information. Physical exercises reduce the fortunes of memory loss. Try to give your memory a workout, training it to keep it sharp (Harp T., 2003). After a long tiring day in school or office, a sleep is a must. When we sleep, we boost the capability of our brain in problem-solving and critical thinking skills. It is also an essential in learning new information.We find it hard to remember something especially if we need to input too much information. Socializing can be one of the simplest memory techniques. According to Oscar Ybarra, a psychologist at the U-M Institute for Social Research (ISR), socializing was just as effective as more traditional kinds of mental exercise inimproving memoryand intellectual performance. Interacting with others can sharpen your memory because social interaction itself is challenging already because you have to fence with variety of people. If socializing isnt your habit, it cant affect you now but it will in the future.One of the horrors of growing older is the certainty that you will lose memory and that the loss of vocabulary or incident or imagery is going to diminish your imagination (Eastway R., 2004). Memory is like a shadow. It w ill be always after us, but as soon as the darkness rose, it will fade away. Memory is a lifetime machine. It will continue to work for a lifetime as long as we take good care of it. Just like an ordinary machine, it needs to be keep to function properly.According to Matlin (2005), memory is the process of maintaining information over time. Memory came from the Latin word memorariandmemor, meaning mindful or remembering. Memory is our ability to encode, store, and recall information or past experiences with the help of the human brain. It is like a filing cabinet with a limitless capacity and speed. The work that our memory does wide depends on the owner the humans. Scientific research has shown that the human brain starts remembering things 20 weeks after conception. In order to form new memories, information must be changed into a usable form through the process known asencoding. Once the information has been successfully encoded, it must bestoredin memory for later use. Most of this stored memory lies out of our awareness most of the time, except when we really need to use it. The retrieval orrecalling process allows us to bring stored memories into conscious awareness and use it in the present.Memory relies largely on the cells in our brain, and as we get older, brain cells (neurons) die, and dont get replaced. The number of connections between the calls (synapses) also tends to disappear with age. We typically have 100 billion neurons at the age of eighteen, but then proceed to lose them every day at that placeafter. Forgetting is a normal and inevitable part of the way that the brain works at any age. One benefit of forgetting is that it helps to remove unnecessary information from our minds. The brain is good at knowing how to forget information that it no longer needs. It is hard to know which would be worse- never being able to remember, or never being able to forget. Forgetting may be a natural part of how the brain works, but not all forgetting is beneficial. Its frustrating not being able to remember all those things that you really do want to remember. Forgetting happens most of the time for office workers, students, teacher or anyone, even those who dont have a profession. No one wants it, but just like what isstated above, it is inevitable. Many people wish to improve it, but some of us become unconsciously careless. One thing that is important to a good memory is the health of the brain in which it sits. We want to keep our memory alive but we are the ones who are killing it. There are some factors on killing your memory. Trauma to the head can permanently damage brain cells. Players that involve their heads on a physical farinaceous are more prone to brain diseases. Another step is intoxication. Alcohol is the most available substance for this. It slows down the brains function when it is in the blood. The third way to decline the brain is to ignore it. The phrase use it or lose it really does apply to the brain. Las tly, the food that you eat is very important for the brain. A diet of burgers and highly salted chips is probably the best combination for brain decay, because it avoids feeding the brain the nutrients that help it to function.Memory improvement is significant on someones lifetime. Whats the use of a happy event if you cant recall? Whats the use of reviewing for exams if you have poor memory? As we grow older, we worry about how we will remember a particular thing, if theres something we can do to prolong it. Well, worry no more There are plenty of things we can do to improve our ability to remember things, but of course it requires effort from the people who wants it. There are some particular foods and vitamins that are helpful for memory improvement. The nutrients we get from it are responsible for the health of our brain. Exercises, physical or mental, will train our memory to be sharp. Lastly, as we socialize, the effect it gives in our memory is positive. Most of it was done i n our daily lives. Enhancing our memory is very simple right?Eating well is good for your physical as well as your mental health. The brain requires nutrients just like your heart, lungs or muscles do. Like everything else in your body, the braincannot work without energy. But which foods are particularly important to keep our memory happy and healthy? Theres no doubt that diet plays a major role in brain health. Omega-3 fats that can be found on oily fish as DHA (if you have higher levels of DHA in the blood, then the brain will operate more efficiently), which enables the body to use it easily. If youre allergic to fish, you dont need to worry because theres a good preference like linseed (flaxseed) oil, soya bean oil, pumpkin seeds, walnut oil and soya beans. They are good for healthy brain function, the heart, joints and general well-being. Nuts and seeds are also on the list. They all contain other important antioxidant vitamin E. In one study, researchers found that people w ho consumed moderate amounts vitamin Efrom food, not supplements trim downed their risk of Alzheimers Disease by 67%. Heres for all the sweet lovers- chocolate. Sweeten your brain-boosting diet with the dark kind (at least 70% cocoa) it contains flavonoids, another class of antioxidants that some research links to brain health. Let us all become healthy by eating veggies. Vegetables dont just help our body to become healthy, but also our minds. Getting adequate amount of vegetables, especially broccoli, cabbage and dark leafy greens, may help improve memory. Can your diet make you smarter? You bet. Research shows that what you eat is one of the most powerful influences on everyday brain skills. So why dont we try switching into a good diet? Youve become healthy not just by body, but also by mind.Some people wonder if a tablet can really help boost a memory. Whether you suffer from Alzheimers disease or you just have memory problems, its been said that certain vitamins can help or pr event memory loss. There is no miracle cure for a bad memory, but there is still a way to improve it while its not yet bad. Research shows that B vitamins improve memory by creating a antifertility shield for the neurons in the brain. B vitamins break down homocysteine,which is an amino acid that poisons nerve cells. This vitamin also aid in the production of red blood cells, which air oxygen, an important brain nutrient. Known for its ability to cross the blood-brain barrier, this amino acid, Acetyl L-Carnatine (also known as ALCAR) helps with energy production necessary for optimal brain function. Another thing is Gingko Biloba. This herb has been shown to improve blood flow to your organs including your brain. Research concerning its effectiveness is mixed, though some studies indicated it may improve concentration. Unfortunately, much of the reason for the popular cures isnt very strong.Leaving the foods and vitamins aside, lets check how our habits can help nor destroy our m emory condition. Physical fitness and mental fitness go well together. People who get regular exercise also tend to stay mentally sharp in their 70s and 80s. A study from cheek Western Reserve University School of Medicine concluded that individuals who exercised by walking or by engaging in physically active hobbies had a lower risk for Alzheimers disease. So experts recommend that you build physical activity into your daily routine. Exercising in the morning before going to work not only spikes brain activity and prepares you for mental stresses for the rest of the day, but also produces increase of retention of new information, and better reaction to complex situations. Lets just consider exercise as a drug. It can be good if is intake moderately. Most of the people believe that memory fades with age. Well, newsflash its just partly true. Memory fades away because as we age, because we lower the activities in involving it. Increase our brainpower by doing mental exercises. Cro sswords and Sudoku and variety of board games are proven to improve our memorys condition. As we play these games, were like settling ourmemory in a battle field to train, and be strong. As long as we live, we must not stop learning. Although people vary widely in their individual sleep needs, research suggests that six to eighthours of sleep a night is ideal to improve our memory. Our memory gets tired too. Findings suggest that getting an average amount of sleep, may help maintain memory in later life. Both too much and too little arent good. Aim for the right amount.Social interaction is a key ingredientalong with proper nutrition,physical exercise, brain training, andlifelong learningin the recipe for cognitive sharpness. Socializing can be a challenge for people who live alone, but everyone must have a social life no matter where they live or how they feel. You dont have to have numerous social events on the calendar or go to a party just to socialize. Simply talking to them is . Being with other people is good for your health and also for your memory. Were not meant to survive alone. Relationships stimulate our brainsin fact, interacting with others may be the best kind of brain exercise. In one recent study from the Harvard School of prevalent Health, for example, researchers found that people with the most active social lives had the slowest rate of memory decline. This wont be a hard thing to do since were talking in our everyday lives. Isnt it simple?

Triggers of Energy Conflicts

Triggers of Energy ConflictsTitle of Essay Energy Conflicts are inescapableAs the global prices for finite null re inaugurations steadily increase, a proliferation of null rambles crap sprung up in all regions across the world. Many of these high indite projects, most notably fracking in the U.S.A and Great Britain, have largely been the result of political sympathiesal plans for domestic stinting development, with an end goal of consolidating particular political agendas (,). different projects have focused primarily on bringing more renewable and suatainable resource solutions into play in regions where no previous exploitation had taken place. such(prenominal) _ has noted that as the number of postcode developments have increased, so too have accompanying competitivenesss, which are more lots than not excaberated by extraneous political, social and, of course, environmental factors.These conflicts quite often vary in their dynamics, however an underlying feature seems to be an inherent flaw in governance regarding the care of energy companies. Conflicts both at local anesthetic and home(a) levels have revolved around an array of issues, ranging from deep rooted opposition to the location of such energy projects to the very proceeses involved in harnessing particular resources. In less developed countries such as Latin the States and India, the marginalisation of certain societal groups is strikingly apparent. However, as stated by Lustig (2011), the last decade saw some improvements in terms of reducing the rising trend in inequalitythat could be traced vertebral column partly to improved education levels and increased transfers to the poor (). Energy conflicts consistently relate back to these aforementioned social and political influences and can generally be divided into three major geographical categories local, regional and national.All of these categories have implications on a geopolitical scale. For example oil projects is frequently used as a tool for building political alliances across borders. Sometimes conflicts, which are decades old, may re- incite and on that pointfore it is not always new investments inwardly the energy heavens that give rise to conflicts. On a national level, the exact distribution of energy revenues among institutions and/or economic groups fuel significant disputes. Local level disputes a great deal offer up unique and insightful case studies on environmental conflicts. The reason being that, although these local conflicts unfold in the actual geographic sites of energy developments, the have been known to have national consequences if not dealt with in an appropiate manner. More importantly, these local conflicts tend to highlight existing failures within states, such as historic economic inequalities and weak insitutional frameworks. Unless addressed in a timely manner, these conflicts have persistently presented awkward challenges for governmental energy policies and have even threatened the stability of some governments.Triggers of ConflictA primary reason why environmental conflicts can be regarded as inevitable is due to the sheer mulitude of triggers that can ignite disputes. Oftentimes, these triggers are provoked simutaneously, which can pose difficulties in producing strategies for conflict resolution or mitigation. The foremost trigger to energy conflicts appears to be the level of opposition to a certain project. Such_ claims that this particular trigger is the most intricate of all, mainly due to the fact that the level of opposition with regard to energy developments frequently range from an arbitrary rejection to a total acceptance. In the case of fracking in Balcombe, opposition to the energy operations of the drilling company Cuadrilla was based solely on the negative environmental and social effects linked to fracking. On the other hand, approval on the pro-fracking side was spurred on by the prospects of econmic benefits and the creatio n of employment. However, as other energy conflicts, there exists movements that occur in amid the two extremities of approval and rejection. These frequently take the form of negotiations between the two opposing sides. Non-governmental organisations such as Greenpeace and the World Resources be are recent examples that have radicalised their direct actions across the world, while quench pull togethering traction as negotiators for environmental issues. These, combined with non-homogenous views within the community vis--vis the energy development on their lands, have often resulted in protracted conflicts. The level and nature of involvement of international non-governmental organizations in the conflict. International NGOs not only have giving in power and sophistication over the last twenty years but, because of their strong environmental focus, they have become particularly active in the Amazon. They have played a fundamental role in supporting communities in their negotiat ions with companies and governments. However, they have also at times been accused of contributing to the escalation of conflicts through the dissimulation of agendas that did not fully represent the demands of local communities.Historical greivances, coupled with prior attempts at energy developments in an area or region, contributes significantly as an enerfy conflict trigger, especially in places that have experient social or even enviromental maltreat as a result of such projects. In attempts to prevent news report from repeating itself in casesOld grievances, or the history of previous energy projects in the area. In areas with a history of social or environmental damage from previous energy projects, local inhabitants tend to be more active in opposing similar new developments for fear of a recurrence of retiring(a) negative externalities. Communities affected by old projects also tend to be more radicalized. The best example is widespread opposition to new dams, which bu ilds upon the deep scars go away by similar projects in the past. The Chixoy Dam in Guatemala, built in the 1970 to 1980s, entailed the forced displacement of more than 3,445 people, mostly indigenous, with no viable resettlement plan. That project also included allegations that the forced relocation included human rights violations by the then-military government. Another example is the legendary Yaciret hydroelectric power plant built between Argentina and Paraguay in the 1970s it displaced as many as 50,000 people.The environmental and social standards of the company involved in the energy projects. In the past decade, Latin America has seen a proliferation of both small oil companies and large national oil companies (NOCs), some of which have shown less stringent social and environmental safeguards coitus to the big majors. Many of these junior companies are not publicly listed this leaves them less concerned about their image and less subject to shareholder pressure to come as well as the largest corporations do. Furthermore, they generally operate under more restricted budgets than their larger counterparts and the contractual span of their oil projects is much shorter, meaning that they may not have the time, the resources, or the interest in engaging in long-term relations with the local populations. The degree to which companies and governments comply with agreements chance oned with local communities. A government or a companys failure to comply with a previous commitment with a community leaves locals feeling betrayed and is very often a source of conflict. Trust is eroded and difficult to rebuild. Communities often protest the breach of contract with force or violence.The extent of law enforcement. A brewing source of conflict is the improper enforcement of national laws or international conventions to which the country is a signatory. National laws may be either overlooked or not aright applied. Typical examples of this are oil projects devel oped in protected national parks, with full disregard for the laws that shield these socially and/or environmentally responsive areas. At the same time, an overabundance of overlapping laws sometimes creates confusion as to their application, leaving them practically inoperative. These situations, combined with governments failure to comply with international legal standardssuch as those imposed by the ILO 169 Convention and the U.N. Declaration of the Rights of Indigenous Peoples (see box on page 5)could lead populations affected by the energy developments to resort to violence as they seek answers to their problems. Indigenous communities often accuse governments of infringement of their right to free prior and informed consent, as granted by those international agreements. Very often, consultations are conducted after the license has been granted to the private energy operator and it is too late to object. Adding to the tensions is the slow pace of the legal system, which can ta ke decades to settle a case, as illustrated by the lawsuit against Chevron that started in Ecuador 17 years ago and has still to be resolved. The availability of institutional mechanisms to mediate conflicts. More often than not, countries lack well-functioning institutions with the capacity to effectively mediate conflicts. An exception is the Peruvian Ombudsman Office, an organization with an unusually high level of legitimacy among all the stakeholders and with proven success in de-escalating conflicts. Local NGOs have also participated in mediating conflicts but usually with lower success rates.With all these triggers in mind, a so called elephant in the room still exists in relation to energy conflicts and that is the potential for economic and social disadvantages, which often leads to a political exclusion of sorts. This is more prominent in developing countries, whereby local communities are presented with the enormous task of bartering with global energy companies such as S hell and Chevron for healthcare and educational funding. These services, expected to normally be provided for by the government, is largely basic. Negogiating with energy companies therefore become the only method available to these communities in order to improve their living standards, or at the very least, gain access to basic state services. However the realistic results of such interactions are very seldom perceived as fair and as such, conflicts detroriate at local, regiona and national levels. Such_ has noted that unless these local conflicts are addressed with the seriousness and depth they deserve, then the ability of local communities to mobilise at national levels could be a major cause for concern for government stability. One need only look as far back as 2009, when the city of Bagua in Peru experienced violent conflicts between police and indigenous tribes, as a result of their oppostion to American resource exploitation in the Amzaon itself.This essay identified five triggers of energy conflicts as well as three major types of conflicts within this sector. The national and regional conflicts often receive the most attention from the public and from the media, however it is within local conflicts that the potential to reach national importance exists, unless the conflict is addressed properly.This paper identified four types of energy related conflicts in Latin America geopolitical and border conflicts at a regional level revenue conflicts at a national level and local conflicts that carry the potential to reach national importance unless properly addressed. Geopolitical and border conflicts normally receive the most attention from the general public and the media. However, revenue and local conflicts carry a greater risk of destabilizing the region because they build on largely unresolved inequalities, weak governance, and increasing radicalization of the indigenous movement. Energy project expansion is necessary for economic growth in Latin Ame rica, where installed hydroelectric capacity remains very low and large oil and gas reserves await development. However, these infrastructure unavoidably also constitute a tremendous risk factor as most of the still-untapped oil and water sources are in environmentally and socially sensitive areas. These social and environmental fragilities, combined with a dire economic reality and historical marginalization of the communities affected by the energy developments, result in bit by bit increasing conflictive situations. Unless addressed rapidly and properly, these conflicts could pose important challenges to Latin Americas political stability and to the regions economic growth prospects.

Harmful Effects of Mobile Phones on the Body

Harmful personal effects of Mobile Phones on the BodyMOBILE PHONE HARMNESS ON HUMAN frameAbstract- Mobile Phone usage has been rapidly spread globally and to provide proper coverage (signal strength), numbers of carrel towers argon also increase worldwide generating a public concern as to whether frequent utilization of such cunnings is unsafe. Effects of Mobile Tower Radiations are seen in m either countries. So, in this paper, we have discussed Mobile Tower Radiations Harmness on Human Health.Keywords Mobile Tower Radiations, Electromagnetic Radiations, Signal Strength, Mobile PhoneI. Introduction-Forty years ago today, Motorola engineer martin cooper-credited as the inventor of the cellular telephone ring made the worlds source public cell from a officious phone. In 1984, the U.S. federal dialogues commission approved Motorolas Dyna Tac phone for public implement. In 1993, Bells awayh and IBM announced their creation of the Simon personal Communicator phone, touched as the worlds first smart phone. In 2002, the first phones with built-in cameras became publicly available, including the Nokia 7650 and the Sanyo SPC-5300. In January 2007, Apple launched its first phone. The company into one handled devices, a quick phone, an i-pod and a wireless communion device.II. Mobile Technology for increased Productivity and profitability- The demand for access to business information and applications through mobile technologies such as the Apple i-phone and i-pad device running google Android and windows 7 mobile or victimisation RIM BlackBerry. Mobile technology allows people to character company data and resources without being level(p) to a single location. Mobile IT Device depose also change the way your company does business new technologies lead to new way of functional and new products and function that stern be offered to your customers. They can make your team more efficient, more creative and more valuable to your clients.Mobile Technology can be used to increase their productivity and lead to increased profitability. Below are some of the key areas in which mobile technology can be useful.Networking/ communicationDevelopmentMarketingMobile ticketingMobile vouchers and coupons and loyalty cardsContent purchase and deli trulyLocation based servicesInformation servicesMobile BankingMobile or cellular phones are now an integral part of modern telecommunications. In manycountries, over half the population use mobile phones and the market is growing rapidly. At theend of 2009, on that point were an estimated 4.6 billion subscriptions globally. In some parts of the world, mobile phones are the nigh reliable or the only phones available. Mobile phones communicate by transmitting radio waves through a network of fixed antennas called base stations. Radiofrequency waves are electromagnetic fields, and unlike ionizing beam such as X-rays or gamma rays, can neither break chemical bonds nor cause ionization in the human body.C ell phones and cell phone towers send signals using radio frequency (RF) cogency, or shaft of light, just like radio, television, pagers and former(a) wireless communication devices. Many people have asked whether the RF energy from cell phones and cell phone towers is safe.III. Radio Frequency Energy RF energy is a nonher name for radio waves. Probably the around important use for RF energy is for communication services. Radio and TV broadcasting, cell phones, pagers, cordless phones, and satellite communications are just a few of the many communication uses of RF radiation.A microwave oven is an example of a non-communication use of RF radiation. Radio frequency energy is a form of electromagnetic radiation. Electromagnetic radiation can be categorized into two types ionizing (e.g., x-rays, radon, and cosmic rays) and non-ionizing (e.g. radio frequency and extremely low-frequency or power frequency). The potential health effects of non-ionizing radiation from radar, microwave ovens, and other sources, there is currently no consistent evidence that non-ionizing radiation increases crab louse risk. Exposure to ionizing radiation, such as from radiation therapy, is known to increase the risk of Cancer.IV. Effects of radiation energy of mobile phones on human healthThermal effects-One well-unders likewised effect of microwave radiation is dielectric heating, in which any dielectricmaterial (such as living tissue) is heated by rotations of polar molecules induced by the electromagnetic field. In the case of a person using a cell phone, about of the heating effect will occur at the surface of the head, causing its temperature to increase by a fraction of a degree. In this case, the level of temperature increase is an order of magnitude less than that obtained during the movie of the head to direct sunlight. The brains blood circulation is capable of disposing of bare heat by increase local blood flow.Non-Thermal effects-An effect which can only be explaine d in terms of mechanisms other than increased molecular motion (i.e. heating), or occurs at absorbed power levels so low, that a thermal mechanism seems unlikely, or displays so unexpected a dependence upon some experimental variable that it is problematical to see how heating could be the cause.CancerStudies on cancer in relation to mobile telephony have focused on intracranial tumors because certification of energy from RF fields from a mobile phone is mainly within a small-scale area of the skull near the handset. When whole body exposure is considered, as in some occupational and environmental studies, also other forms of cancer have been investigated.V. Do mobile phones harm brain tissues and cause cancer?There is an argument that mobile phone causes change in the structure of chemicals of cells. Also, they are accused of causing cancer. The radiation from the mobile phones has been villainized by those who warn that the excess usage of mobile phones can damage brain cells. The heat produced by the radiation from mobile phones has been found to change the chemical structure of chemicals synthesized in small organisms like worms. But many scientists are of opinion that the radiation cannot be harmful to human tissues. A recent report says that so far there is no evidence of any adverse effect by mobile phone radiations, unless they added that new researches have to be conducted.Recently, I have spy some serious effects ofmobile phone radiationon brain. In brain, hippocampus is unders similarlyd to be responsible for learning and memory. In order to confirm this, we have carried out investigations on the whole brain, hippocampus, and remaining brain. This was under preceden to determine the possible site of the electromagnetic field (EMF) bio-interaction. We have concluded that these radiations may damage our nervous system, especially memory. This has been through by protein kinase C activity and DNA strand break, which has been affected by mobile pho ne radiations.Anyway it is better to prevent kids fromusing mobile phonesexcessively because their brain tissues are more vulnerable to chemical changes and cancer if exposed to radiation.When you try to call someone through mobile phone, do not put your mobile close-hauled to your ears until the recipient answers. Because directly after dialing the mobile phone, it would use its maximum signaling power, which is 2 watts which is equal to 33 dbi. Please be careful. Message as reliable (Save your brain. Please use your left ear while using cell (mobile), because if you use the right one, it will affect the brain directly. This is a true event from many researches performed by the medical teams around the world.VI. Advantages and Disadvantages of Mobile Phone EffectAs time passes by technology are growing faster and conk out faster. The most important and common part of technology in our life is mobile phone technology. We bring mobile phone with us in everyplace that we go and us e it on a daily basis. It is being the part and parcel of our daily life. Mobil phone have been around for quite some time, but as time goes on, mobile phones continuous to gain many features. A mobile phone started out as simple device that had only numbers, and most people used them for emergencies only. Nowadays, cell phones have many features such as phone calls, text messaging, taking pictures accessing the web, using calculator etc as many accessories. mickle become addicted in cell phone because they are getting many facilities by using it. For example whenever they go outside they can take the phone with them because of its size, networking range, a full charge battery, essay connection etc. There is no doubt about the benefits of mobile phones. Mobile phones have so many advantages but there have some disadvantages too. It has become a vital element for every person but nowadays it has also sightly an addiction to the young generation. If we talking about Bangladesh, nine out of ten young people in the town area, have own a mobile phone. They use it in various purposes. Their attraction of mobile phone is increasing day by day. Medical science says that the radiation of mobile phone is too bad for human health.In 1995 mobile phone has introduced to Bangladeshi people. The first mobile service providercompany was City cell. Then Grameenphone, Aktel, Banglalink, Teletalk, and Warid which is being named as Airtel an Indian telecom company who has also started their business in Bangladesh.In the arena of communication mobile has becoming the latest fashion and also the most essential means of communication. These mobile phones let us enjoy all the comforts within a single device.VII. A few tips on how to obviate radiation from cell phonesAt your workplace or office, there should be strict screening of calls.Use voicemail regularly when working on something from which you do not want to be disturbed. When responding back, it helps to collect the thought s and speak just how overmuch is required.People who attend a lot of teleconferences should use a wireless headphone seeded player mike. It is easier than the headset on the ears which one has to keep pressed to the ear, especially since the meetings may go on for hours.At home, turn on the loudspeaker, so there is not much of a problem for the ears and brain.While traveling, use earphones.Keep mobile phones a few feet away from your body while sleeping.Do not talk for too long on your cell phone. Short calls will avoid unwanted radiation and also you will save money on calls.VIII. Result-Analyses shows that mobile radiations effect human brain and GSM operated mobile phones has the higher effect on brain activity as compared to CDMA operated mobile phones. Globalization is the new mantra. In this age, it is very difficult not to have technology. But as shown in this study, with every technology invented to facilitate human beings, there come certain hazards. Electromagnetic radia tion is everywhere. More and more wireless communication services are expected, so is the artificial electromagnetic radiation. It seems that there is no way to reverse this trend. Scientists and engineers must mature better and safer wireless systems and devices. Smaller cell size, better base station antennas and other more advanced technologies will allow future cell phones to smoothen much lower power and make technology a real boon.ConclusionThe use of cell phone is increasing tremendously day-by-day but most of the people (who use cellular phone) have no knowledge how the cell phones impact on human health. It is almost clear from the research that the radiation from cell phone is responsible for many diseases like brain tumor, headaches, short-term memory loss, different types of heart diseases etc.In the presence of various RF sources, including cell phone handsets and broadcast antennas whichcontribute the overall environmental exposure has become a great concern about sa fety of this newtechnology and as well as human health. However we should contribute more efforts to transformmobile radio communication to an efficient, secure and convenient system useful for the welfare and positive advancement global society and for this the Government should take necessary steps for the mobile industry with proper regulation.

Considerations of Individuality in the Diagnosis and Treatment of Autis

Considerations of Individuality in the Diagnosis and Treatment of AutismThere is no standard fount or typical person with autism. Parents may hear much than one label applied to the same child ill-like, learning disabled with autistic tendencies, advanced functioning or low functioning autism. These labels dont describe residues between children as much as they indicate differences between professionals training, vocabulary and moving-picture show to autism (1)In my first web paper I considered upkeep Deficit Hyperactivity Disorder, and questioned whether its symptoms and underlying neurobiology should be considered a disorder, or rather simply a difference among humans nervous systems. In a further geographic expedition of the idea of individuality within a diagnostically defined disorder, I have researched autism. By definition, autistic individuals present symptoms with varying degrees of severity. It is therefore considered a spectrum disorder, meaning that its symptoms a nd characteristics burn present themselves in a wide variety of combinations, from mild to severe (1). A diagnosing of autism can result from any combination of its defined behaviors. In addition to this, there is a host of related disorders, in which some but not all symptoms of autism are present. These include Asperger Syndrome, Fragile X Syndrome, Rett Syndrome and distributive Developmental Disorder Not Otherwise Specified (PDDNOS) (4)(2). Because of its characteristic breadth, autism is a good mannequin of the implications of being seen as an individual within a host possessing a defined disorder. Current professional opinion stresses the importance of accurately assessing differences in neurologic deficits, even if they present similar autistic sympt... ...ninds.nih.gov/HEALTHINFO/DISORDER/AUTISM/autism.htm3)paper by Dena Bodian from Neurobiology and Behavior 1998 http//serendip.brynmawr.edu/bb/neuro/neuro98/202s98-paper1/Bodian.htm%20l4)Overview of Autism by Stephen Ed elson, Ph. D., at the Center for the Study of Autismhttp//www.brainnet.org/autism.htm5)Autism? What is it?http//users.planetc.com/new.html6)Stereotypic (Self-stimulatory) Behavior by Stpehen M. Edelsonhttp//www.autsim.org/stim.html7)The Cerebellum and Autism by Stephen M. Edelsonhttp//www.autism.org/cerebel.html8)Genetics and Autism by Stephen M. Edelson http//www.autism.org/genetics.html9)Autism and the Limbic System by Stephen M. Edelsonhttp//www.autism.org/limbic.htmlOther Resources10)The Child with particular(a) Needsby Stanley I. Greenspan and Serena Wieder. Massachusetts Perseus Books, 1998. Considerations of Individuality in the Diagnosis and Treatment of AutisConsiderations of Individuality in the Diagnosis and Treatment of AutismThere is no standard type or typical person with autism. Parents may hear more than one label applied to the same child autistic-like, learning disabled with autistic tendencies, high functioning or low functioning autism. These labe ls dont describe differences between children as much as they indicate differences between professionals training, vocabulary and exposure to autism (1)In my first web paper I considered Attention Deficit Hyperactivity Disorder, and questioned whether its symptoms and underlying neurobiology should be considered a disorder, or rather simply a difference among humans nervous systems. In a further exploration of the idea of individuality within a diagnostically defined disorder, I have researched autism. By definition, autistic individuals present symptoms with varying degrees of severity. It is therefore considered a spectrum disorder, meaning that its symptoms and characteristics can present themselves in a wide variety of combinations, from mild to severe (1). A diagnosis of autism can result from any combination of its defined behaviors. In addition to this, there is a host of related disorders, in which some but not all symptoms of autism are present. These include Asperger Syndr ome, Fragile X Syndrome, Rett Syndrome and Pervasive Developmental Disorder Not Otherwise Specified (PDDNOS) (4)(2). Because of its characteristic breadth, autism is a good example of the implications of being seen as an individual within a group possessing a defined disorder. Current professional opinion stresses the importance of accurately assessing differences in neurological deficits, even if they present similar autistic sympt... ...ninds.nih.gov/HEALTHINFO/DISORDER/AUTISM/autism.htm3)paper by Dena Bodian from Neurobiology and Behavior 1998 http//serendip.brynmawr.edu/bb/neuro/neuro98/202s98-paper1/Bodian.htm%20l4)Overview of Autism by Stephen Edelson, Ph. D., at the Center for the Study of Autismhttp//www.brainnet.org/autism.htm5)Autism? What is it?http//users.planetc.com/new.html6)Stereotypic (Self-stimulatory) Behavior by Stpehen M. Edelsonhttp//www.autsim.org/stim.html7)The Cerebellum and Autism by Stephen M. Edelsonhttp//www.autism.org/cerebel.html8)Genetics and Autism b y Stephen M. Edelson http//www.autism.org/genetics.html9)Autism and the Limbic System by Stephen M. Edelsonhttp//www.autism.org/limbic.htmlOther Resources10)The Child with Special Needsby Stanley I. Greenspan and Serena Wieder. Massachusetts Perseus Books, 1998.