INTRODUCTION An important aspect of any biotechnological processes is the culture of animal cells in artificial media. These animal cells in culture are used in recombinant DNA technology‚ genetic manipulations and in a variety of industrial processes. Now-a -days it has become possible to use the cell and tissue culture in the areas of research which have a potential for economic value and commercialization. The animal cell cultures are being extensively used in production of vaccines‚ monoclonal antibodies
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Advantages and Disadvantages of Cell / Mobile Phones Brief History: Joseph Henry Enenbach will be remembered as a pioneer in mobile telephone technology that led to the creation of the cellular telephone. He died on 26th February‚ 1994 at the age of 70. In Pakistan‚ even though cellular phones or commonly known as mobile phones have been around since the late 1980s‚ they became very popular in the late 1990s when they turned to be more affordable and cost-effective to the common people
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ADVANTAGES AND DISADVANTAGES OF MOBILE PHONES ADVANTAGES AND DISADVANTAGES OF MOBILE PHONES Mobile phones are used all over the world for different purposes. In this essay‚ we will be looking at the advantages and disadvantages of using mobile phones. Dr Martin Cooper is considered the inventor of the first portable handset and the first person to make a call on a portable cell phone‚ in April 1973. This portable phone had numerous features never seen before. It revolutionised communication
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Advantages and disadvantages of Cell Phones It is for a fact that having a mobile phone now a days is a sort of a necessity and it is an inevitable truth that mobile industry is taking everyone by a storm. From the very basic thing of making a call to texting‚ and now internet access for just a touch of your finger tips. There are millions of mobile phone users. The mobile phone usage is beneficial and at the same time the usage can also be useless and have certain disadvantages. Advantages
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References: 1) RaulBarrera. (2012). Disadvantages of Cell Phones in School. Available: http://www.studymode.com/essays/Disadvantages-Of-Cell-Phones-In-School-1074638.html. Last accessed 6 May 2014. 2) HayItsGio. (2012). Cell Phones in School. Available: http://www.studymode.com/essays/Cell-Phones-In-School-1317488.html. Last accessed 4 May 2014.
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A fuel cell is a device that transfers the chemical energy from a fuel into electricity through a chemical reaction of positively charged hydrogen ions with oxygen or another oxidizing agent [1]. Fuel cells can produce electricity continuously until these inputs are supplied. The first fuel cells were invented in 1838. Since then‚ fuel cells have been used in many other applications. Fuel cells are used for primary and backup power for industrial‚ commercial and residential buildings and in inaccessible
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Tutorial Example Projects C++ Graphics C++ Forum Contact Us Tutorial contents Introductions C++ Basics Program Structure Variable: Data types Constants Operators Basic Input/Output Control Structures if....else statement while loop do...while loop for loop switch break‚ continue goto‚ exit statement Function Compound Structure Array Pointer Data Structure OOPs Class Inheritance Polymorphism Advanced File Handling C++ Graphics Extra C++ Examples C++ Projects
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Cell phone is the most popular technological product nowadays. It is used by almost people off all ages. It seems to be very useful. In fact‚ for every plus‚ there is minus. In my opinion‚ although cell phone shows us many advantages‚ it also brings us some disadvantages. For one thing‚ cell phone really makes our life easier because of the following reasons. First‚ it is very convenient. It helps us contact with people at anywhere over the world in a fastest way. People use it to connect with others
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Nowadays‚ a lot of animals live in zoos. Is it right or wrong to keep them in the zoos? The following essay presents some pros and cons of this problem. First of all‚ people can see wild‚ beautiful‚ exotic animals. They can see how animals live and behave. Secondly‚ animals have good life conditions in zoos. They do not starve because they have food and water. People take care of animals. Moreover‚ animals are safe. People do not kill them. Animals live as close to the natural habitat as possible
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1. INTRODUCTION Animals that live under human care are in captivity. Captivity can be used as a generalizing term to describe the keeping of either wild animals or domesticated animals such as livestock and pets. This may include for example farms‚ private and zoos. Keeping animals in human captivity and under human care can thus be distinguished between three primary categories according to the particular motives‚ objectives and conditions. The domestication of animals is the oldest documented
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