Sunday, May 17, 2020

Classification Of Polymers, Cellulose, Starch, And Rubber

ïÆ'Ëœ Polymers they are combined form small units of compound having low molecular weight, as a wall is made up of bricks. ïÆ'Ëœ The word ‘polymer’ is taken from two Greek words poly states many and (mer) means unit or part. ïÆ'Ëœ The term polymer is defined as very large molecules having high molecular mass. These are also referred to as macromolecules, which are formed by joining of repeating structural units on a large scale. ïÆ'Ëœ The repeating structural units are derived from some simple and reactive molecules known as monomers and are linked to each other by covalent bonds. ïÆ'Ëœ This process of formation of polymers from respective monomers is called polymerization. (2)Types of Polymers There are several ways of classification of polymers based on some special considerations. The following are some of the common classifications of polymers: Under this type of classification, there are three sub categories. ïÆ'Ëœ (2,1,1)-Natural polymers these polymers are found in plants and animals. Examples are proteins, cellulose, starch, and rubber. ïÆ'Ëœ (2,1,2)- Semi-synthetic polymers Cellulose derivatives as cellulose acetate (rayon) and cellulose nitrate, etc. are the usual examples of this sub category. ïÆ'Ëœ (2,1,3)- Synthetic polymers A variety of synthetic polymers as plastic (polythene), synthetic fibers (nylon 6,6) and synthetic rubbers (Buna - S) are examples of manmade polymers extensively used in daily life as well as in industry. There are three different types based on theShow MoreRelatedPolymers And Their Monomer Units1444 Words   |  6 Pagesabout polymers and their monomer units. Polymers are substances containing a large number of structural units joined by the same type of linkage. The small molecules that make up these polymer chains are called monomers. Polymers in the natural world have been around since the beginning of time and are found many places in nature. Starch, cellulose, and rubber all possess polymeric properties. Cellulose and starch are actually polymers of glucose which is a monosaccharide. Man-made polymers (alsoRead MorePhase Behavior : Melting Point1898 Words   |  8 Pages PHASE BEHAVIOR:- Melting Point:- The temperature at which polymer transmit into crystalline form to determine the melting point. The polymer of low-molecular substance exist very low melting point and this happened when polymer chain is dispersed. In physical state melting point is very difficult to calculate. Polymer will decompose at high temperature rather than melts. It is also known as crystalline melting temperature. Glass TransitionRead MoreNatural and Synthetic Materials2539 Words   |  11 Pagesis then used in a series of methods that include, stitching, knitting and weaving in order to produce a fabric. The content, construction and finish of a fabric can determine it’s aesthetic and functional qualities. This essay will explore the classifications and characteristics of fibres, yarns and fabrics, expanding on colouration and finishing techniques. (Udale, 2008)(Hallet Johnston, 2010)(BBC Bitesize, 2011) Natural fibres are produced and obtained from plants and animals; they are 100% biodegradableRead MoreA comparison of the respiration of yeast in different sugar substrates.4520 Words   |  19 Pagesmonosaccharide (glucose) and a disaccharide (maltose) Theory: There are three types of Carbohydrates, monosaccharides, disaccharides, and polysaccharides. The two, which I will be looking at, are, monosaccharide (glucose) and the disaccharide (maltose) Classification and major properties of carbohydrates GroupPropertiesExamples Monosaccharides general formula:(CH20)n(n = 3 to 0)Small molecules with low molecular mass; sweet tasting; crystalline; readily soluble in water.Trioses, e.g. glyceraldehyde (C3H603)HexosesRead MorePharmaeutical Industry Training Report with Deep Description of Different Area in Ibn Sina Pharmaceutical Industry Ltd.14426 Words   |  58 Pagesdosage itself is inadequate to produce | | |tablets of adequate weight and size. | | |Ex- Lactose, Avicel, Maize starch, Ludipress etc. | |Binders or Granulating agents or|Binders are added to tablet formulations to add cohesiveness to powders, thus providing the necessary | |Adhesives Read MoreNatural Dyes11205 Words   |  45 Pagesand tawnies.[13][14] In China, Japan, India, Pakistan, Nigeria, Gambia, and other parts of West Africa and southeast Asia, patterned silk and cotton fabrics were produced using resist dyeing techniques in which the cloth is printed or stenciled with starch or wax, or tied in various ways to prevent even penetration of the dye when the cloth is piece-dyed. Chinese ladao is dated to the 10th century; other traditional techniques include tie-dye, batik, RÃ… ketsuzome, katazome, bandhani and leheria.[15]Read MoreSexually Transmitted Diseases35655 Words   |  143 Pagescompressible little free space between particles | flows easily particles can move past one another | flows easily particles can move/slide past one another | does not flow easily rigid - particles cannot move/slide past one another | Classification of Matter Elements Any substance that contains only one kind of an atom is known as an element.This atom is distinguished by its atomic number which is the number of protons in its nucleus. The notation for each element can be found on the periodic

Wednesday, May 6, 2020

Global Internet Censorship - 2367 Words

What aspects of the internet make global censorship difficult? Why might a government be inclined to impose internet censorship on its citizens? Is global internet censorship moral? Internet Censorship has been a topic of much debate and growing concern in the past decade. According to the OpenNet Initiative, the number of countries seeking to control access of content on the internet has been rising rapidly (Documenting Internet Content Filtering Worldwide n.d). Reporters Without Borders published a list of thirteen countries as ‘internet enemies’ in 2006. The list consisted of Belarus, Burma, China, Cuba, Egypt, Iran, North Korea, Saudi Arabia, Syria, Tunisia, Turkmenistan, Uzbekistan and Vietnam (List of the 13 Internet Enemies in†¦show more content†¦The second reason of protecting children would include keeping adult content from children and keeping the children safe from paedophiles. National security is the other main reason why a country would be forced to impose internet censorship. The political sentiments of a country are likely to be kept a secret by the government. On the other hand we do have countries like China whose suppression of important information has led to not only national but international problems. ‘The SARS crisis in 2004, and the contamination of the Songhua River in 2006, which affected millions of lives in China and Russia, serve as particularly deadly examples’ (New HRIC Report Details State Secrets System 2007). Terrorism is another reason. The governments of most countries are keeping a strict watch out for any material posted on the internet linking to terrorism. ‘The National Institute of Justice defines computer crime as any illegal act for which knowledge of computer technology is used to commit the offence’ (Stamatellos 2007:11). On the fifth of July 2007, three â€Å"cyber-jihadis† who used the internet to urge Muslims to wage holy war on non-believers were jailed for between six-and-a-half and ten years in the first case of its kind on Britain (Gulf News, 2007:20). The governments also censor content to protect the political sentimen ts of the country. In Belarus, for example, ‘in March 2006, severalShow MoreRelated Global Look at Internet Censorship Essay2815 Words   |  12 PagesGlobal Look at Internet Censorship Introduction Many Americans take for granted the freedom that living in the United States allows us. As we go through our days, we whine about our bosses, the governor’s latest political agenda, or read commentary about how the war in Iraq is morally wrong. Whether we are sending e-mail, posting on message boards, or reading the news online, we are guaranteed the same freedom of self expression that we enjoy offline. In other countries, the mere act ofRead MoreInternet Censorship And The Internet941 Words   |  4 Pages More than two decades ago, the Internet was yet to be ubiquitous in the homes of the general public around the world. Today, global users of the Internet has surpassed the 3 billion mark, or approximately 45% of the world population, a trend that is not likely to slow down anytime soon (World Internet Users Statistics and 2015 World Population Stats, 2014). The idealistic vision of self-governance of the Internet has proved to be insufficient and threats to the Internetà ¢â‚¬â„¢s core principles areRead MoreInternet Censorship And Its Effect On Society1053 Words   |  5 PagesInternet Censorship is Detrimental to Society The Internet was designed to enable and facilitate communications with connected systems at the local, state, national and international levels. The United States Defense Advanced Research Projects Agency (DARPA) launched a research campaign to find effective ways to link computers to help the exchange of information. In the 1990s, the Internet took off and entered a growth phase which caused an increase in communications worldwide. DARPA did notRead More We Dont Need Internet Censorship Essay1350 Words   |  6 PagesWe Dont Need Internet Censorship Censorship is an extremely controversial issue. There have been hundreds of thousands of essays written about whether or not censorship on the Internet is right or wrong, but so far, no precise conclusion has surfaced. Ive researched into the topic, but I havent completely sided with one or the other. There are just good reasons against censorship. This essay briefly discusses some reasons why the Internet should be censored, but will then mainly focusRead More Internet Censorship Essay1605 Words   |  7 PagesEveryone has heard of the Internet and how it is going to help set the world free. The Internet is the fastest growing form of communication and is becoming more and more common in the home. Companies these days do big business over the Internet, and online shopping has grown tremendously in the last few years. For instance, the online auction site eBay sells millions of items every year online. Many companies are making even more plans to expand their business to the I nternet. Unfortunately, there haveRead MoreOff the Leash: Censoring the Internet Essay1737 Words   |  7 Pagesyour Facebook today? How about your E-Mail? If not, you may be missing something even now! In today’s fast-paced world of instant information, if you aren’t on the internet, you’re almost certainly uninformed. Networks and the internet make up an alarmingly large part of our life. We get our news (both personal and public) via the internet, we talk to friends, shop for things, pay our bills†¦ but how vast is the monster that does all of this? This question, along with many others, is essential in theRead MoreGovernments Censoring Internet Content1490 Words   |  6 Pagespros and cons of government involvement in controlling the content of the Internet. Everyday technology is getting more sophisticated, meaning that nowadays it is easy to explore about a certain issue via online connection and be near the world. In the present, as long as you ha ve Internet connection, you have the ability to have access to all kind of information that is posted on Internet. There is a huge debate whether internet should be regulated or not, and this is excepted to continue in the upcomingRead MoreCensorship Filters The Media Within The World1574 Words   |  7 PagesDoes censorship filter the media within the world? Censorship has followed the free expressions of men and women like a shadow throughout history. Censorship is a way to filter the media in the world by suppressing unacceptable viewings or hearings by not showing, bleeping out, and covering the distasteful parts. In ancient societies, China for example, censorship was considered a logical tool for regulating the political and moral life of the population. The term censor can be traced to the officeRead MoreInternet Censorship and Government Regulation Essay1058 Words   |  5 PagesThese days the internet has become an essential part to living for almost everyone but one of the controversial topics that people bring up is that whether or not the government should regulate information on the internet. Both sides have valid points which form a reasonable argument. Some people would say that they need to because of the dangers lurking around in the cyber world but the reasons for why the government shouldn’t regulate the Internet outnumber the reasons for why they should. TheRead MoreThe Pros And Cons Of Internet Censorship1042 Words   |  5 PagesCensorship comes in many forms and for a lot of different reasons but when it comes to the internet, for the most part it is beneficial. It can provide security for sensitive material. The things that minors are exposed to can be limited. Also you can make sure that it is not used to cause chaos. Furthermore it would seem to be a beneficial part of online life. It can provide security for important documents and conversations. Internet censorship can help with cyber security when important information

Attracting and Recruiting Talent free essay sample

This brief report will cover aspects of attracting, recruiting and selection of talent, identify and explain the benefits and attractions of a diverse workforce and describe methods of recruitment and selection. Factors that affect an organisation’s approach to both attracting talent and recruitment and selection. There are external and internal factors that will affect an organisation’s approach and they can be inter-related: †¢ External factors can include Economic – recession and the general climate being poor, companies will be wary of spending and expanding their business and as such will not recruit any additional staff o Political – an increase in the retirement age will mean that turnover will slow down as staff stay in their roles for longer o Legal – legislation such as minimum wage, impacting on business when there is an increase. Some organisations may be unable to recruit further staff due increase in wage bill †¢ Internal factors can include Staff turnover – promotions, retirement or even redundancy will impact on turnover and therefore create or remove positions o Business objectives/company strategy – if the business is planning on expanding it will need to factor in any recruitment needs at all levels o Wastage rates will decrease when unemployment is high, this will mean that there will be less need to recruit as staff tend to stay in their existing role due to the fear of joining those unemployed Organisational Benefits to a Diverse Workforce There are many benefits to a diverse workforce aside from the legal compliance: Enhances the organisation’s reputation and image with external stakeholders making them an employer of choice ? Assists in the development of new products, services and marketing strategies due the input of ideas. ? Builds employee commitment and morale. Employees feel valued and fairly treated ? Recruiting and retaining people from a wide talent base as the organisation has a good reputation ? Reduces the costs of turnover and absenteeism, due to high employee engagement. Different Recruitment Methods and when to use them Hook and Foot (2002) define recruitment as All activities directed towards locating potential employees ? Attracting applications from suitable candidates They go on to state that the aims are: ? To obtain a pool of suitable candidates for vacant posts ? To use a fair process and be able to demonstrate that the process is fair ? To ensure that all recruitment activities contribute to organisational goals and a desirable organisational image There are various methods we can use for recruitment depending on the position being recruiting for and whether recruiting internally or externally. There is also significant cost to recruitment so it is vital that the right method for the right position is used. Methods include: †¢ Printed media – covers all aspects of printed publications including newspapers, magazines and niche print publications. Can reach a wide audience particularly if recruiting nationally, for specialist roles or high end roles. It is expensive to advertise in many national newspapers and can have a short life span. †¢ Online recruitment – becoming ever more popular with most people having access to the internet. Has a wide audience and can be very cost effective. Due to the large number of applicants that an on-line ad is likely to receive it can become quite onerous in sifting through the applications. Very useful when looking for lower paid unskilled workers. †¢ Internal recruitment – transferring or promoting existing staff can be very motivational and good for morale. It has a narrow audience and therefore might not always result in a wide range of suitable talent for the position. It can also cause lack of diversity with fewer new ideas being generated. It can be extremely cost effective as there is very little cost involved. Different Selection Methods and when to use them As found on Tata McGraw-Hill Education Selection is the process of differentiating between applicants in order to identify and hire those with a greater likelihood of success in a job In order to make our selection we need first to collect data on our candidates and we do this by a variety of methods, application forms, CVs , interviews, tests, references and possibly an assessment centre. The most popular of these is known as ‘The Classic Trio’ Mark Cook (1988) . Application Form 2. Interview 3. References Application forms still used by majority of organisations in the UK, useful for gaining basic information on a candidate and checking if they meet the person specification essential criteria. Interviews are still a popular form of collecting data on candidates and will either be structured or un-structured. Structured interviews generally follow a set of predetermined questions, useful for ensuring consistency. The questions will have a rating attributed to them for fairness and they are usually specific to the role requirements. They can however make the candidate feel uncomfortable and may inhibit the asking of questions. Unstructured interviews tend to be more relaxed, the conversation tends to ebb and flow as a natural process. The interviewee is encouraged to lead the conversation and talk freely. This enables the interviewer to listen and assess the responses. There is little preparation required for this process and it can result in inconsistency. It becomes difficult to compare candidates as they will have been asked different questions. In general they are less successful than structured interviews. In conclusion there are many factors to take into consideration when looking at why and how we recruit. We need to ensure our processes are fair and robust in order to attract the best talent into our organisation and resulting and developing a diverse and talented workforce.