All About Plastics

All About Plastics Every day, people use plastics in various applications. Over the last 50 to 60 years, the uses for plastic have expanded to infiltrate virtually every aspect of life. Because of how versatile the material is, and how affordable it can be, it has taken the place of other products including wood and metals. The properties of the various types of plastics make it beneficial for manufacturers to use. Consumers like it because it is easy to use, lightweight and easy to maintains. Types of Plastics Overall, there are about 45 unique types of plastics and each type has dozens of different variations. Manufacturers can change the physical structure just slightly to benefit the application for which they are using it. When manufacturers change or modify things like the molecular weight distribution, the density or the melt indices, they alter the effectiveness and create plastics with many specific properties - and therefore many different uses. Two Plastic Categories There are two main types of plastics, thermoset plastics and thermoplastics. Breaking these down further, you can see the everyday uses of each type. With thermoset plastics, the plastic will hold its shape long term once it has cooled to room temperature and hardened thoroughly. This type of plastic cannot return to its original form - it cannot be melted down into its original form. Epoxy resins and polyurethanes are some examples of this type of thermosetting plastic. It is commonly used in tires, auto parts, and composites. The second category is thermoplastics. Here, you have more flexibility and versatility. Because it will return to its original form when heated, these plastics are commonly used in various applications. They can be made into films, fibers, and other forms. Specific Types of Plastics Below are some of the specific types of plastics and how they are in use today. Consider their chemical properties and benefits, too: PET or Polyethylene terephthalate - This plastic is ideal for food storage and water bottles. It is commonly used for things like storage bags, too. It does not leach into the food, but is sturdy and can be drawn into fibers or films. PVC or Polyvinyl Chloride - It is brittle but stabilizers are added to it. This makes it a softer plastic thats easy to mold into various shapes. It is commonly used in plumbing applications because of its durability. Polystyrene - Commonly known as Styrofoam, it is one of the less ideal options today for environmental reasons. However, it is very lightweight, easy to mold and it works as an insulator. That is why it is heavily used in furniture, cabinetry, glasses and other impact-resistant surfaces. It is also commonly added with a blowing agent to create foam insulation. Polyvinylidine Chloride (PVC) - Commonly known as Saran, this plastic is used in wraps to cover food. It is impermeable to odors from food and can be drawn into various films. Polytetrafluoroethylene - A growing popular choice is this plastic also known as Teflon. First manufactured by DuPont in 1938, it is a heat-resistant form of plastic. It is very stable and strong and is unlikely to be damaged by chemicals. Moreover, it creates a surface that is almost frictionless. This is why it is used in various cookware (nothing sticks to it) and in tubing,  plumbing tapes and in waterproof coating products. Polypropylene - Commonly called just PP, this plastic has various forms. However, it has uses in many applications including tubes, car trims, and bags. Polyethylene - Also known as HDPE or LDPE, it is one of the most common forms of plastics. New formations of it make it possible for this plastic to be flat. Its initial uses were for electrical wires but it is now found in many disposable products, including gloves and garbage bags. It is also used in other film applications such as wraps, as well as in bottles. The use of plastics every day is more commonplace than many might think. By making small changes to these chemicals, new and versatile solutions are obtained.

Ways to Prevent Engineering Misconduct Essay Example | Topics and Well Written Essays - 1750 words

Ways to Prevent Engineering Misconduct - Essay Example This brings us to the questions: what code of conduct should be adopted by an engineer to avoid such a situation? What legal system is in place to keep a check on the work under progress? More importantly, what repercussions must be imposed on the guilty engineers for unethical practices? These questions will be answered in the later part of the essay in light of case studies of historical engineering disasters like the Minnesota Bridge over the Mississippi River. Before proceeding to legal issues and case study, one must have an insight into how a construction project is managed. It basically comprises of three parties. First being the client, this in our discussion, is the government. Second party is the consultants and the third is the contractor. The client hires the consultant to design the project, which may be a housing society, a building or a bridge. The consultants do the entire groundwork including planning and designing. The plans are submitted to the client who gets them vetted from another organization. They redo all the calculations and check the plans for any short comings. Once the plans are passed, they are handed over to the hired contractors who start the construction. The consultants pay regular visits to the site to ensure the work is being properly done, proper materials are being used, the construction practices being used are correct etc. Meanwhile, separate supervisors may also be hired by the client, someone trustwo rthy, to keep an additional check on everything. The question that plagues the mind here is: how can, under such elaborate management planning can shortcomings still exist? Reasons for the failure of a project are multifarious, ranging from human factors and design flaws to usage of wrong materials and natural extreme conditions like storms etc. In majority of the cases, it is a combination of the above stated causes. To ascertain the reasons of failure at the

Hobbes and Locke - Philosophy Paper Essay Example | Topics and Well Written Essays - 1250 words

Hobbes and Locke - Philosophy Paper - Essay Example The "nature of state" is that this desire can only be kept under control by the supreme power of the sovereign. In Chapter X Hobbes describes that "the nature of state" cannot be applied to all situation of human behavior. Although Hobbes thought "the nature of state" could be limited in time or scope, when people authorize a sovereign to order, they make him their unlimited representative. Whatever the sovereign does is authorized and binds them; consequently every effective government represents. Thomas Hobbes described life in a state of nature as "solitary, poore, nasty, brutish, and short." (Hobbes), but certainty could be created artificially, if men agreed not to exercise their rights in the cases where it was uncontentiously obvious that they were already under attack, and to hand over the power of defending themselves to a sovereign, who would make the appropriate judgment about difficult cases. Hobbes sees people naturally impelled into the war of all against all. Each will be an enemy to all the rest, not because people are 'sinful' by nature - Hobbes insists that people are not - but because people are both timid and competitive. Fear impels people to strike down their competitors before they can strike humans. (2) Hobbes sees the emergence of "civil society" as a dramatic improvement, because it brings law and authority to people. "Civil society" is contrasted with paternal authority and the state of nature. These changes afforded comfort and decency to civilized and intelligent persons, and a law-abiding political order comprised a satisfactory and progressive state of human affairs. Government was necessary because people were often too short-sighted to realize that their interests were best served by adhering to the rules of justice. It arose less by deliberate decision than through people coming to see that it was to their advantage to support any authority that enforced the rules effectively. The limitation of "civil society" is inability to keep humans genuinely moral. Under morals Hobbes, meant: "mankind that concern their living together in peace and unity" (Hobbes, Chapter XI). It shows the people necessity for strong power, and the lengths at which a person will go to save his life. (3) In the "Letter Concerning Toleration", Lock's principle argument is the claim that religious belief, because it requires consistencies assent, cannot be subjected to effective external coercion; also, the contention that the proper function of the state was to maintain public order and security and that therefore religious toleration was justified only when necessary to achieve that end. Lock created a concept of a "church-society" explaining that all people are born free, but, on the other hand, they starts to share religious believes and values. The move from the state of nature to political society is seen as a response to problems of covetousness, conflict, and ethical uncertainty caused by the development of money and the growth of inequality. Though Locke presents a gradualist account of the actual development of political institutions, the process is described abstractly in terms of state-church relations.

Dadaism and its Influence on Late Mid Twentieth Century Essay

Dadaism and its Influence on Late Mid Twentieth Century - Essay Example The essay "Dadaism and its Influence on Late Mid Twentieth Century" concerns the Dada movement and their art. Design can be shown to have benefited from the innovations that occurred through the Dadaist movement. This paper will review the way in which Dada was defined and relate its evolution to the meaning that was placed in artistic works within the culture of Dada. The discussion will turn towards the work of James Reid and Vivienne Westwoods in order to reveal how Dada has been influential in design. Through focusing on these two designers, the concepts of Dada will emerge as influential to the development of their work and its importance in the evolving topics of design. Defining Dada often leaves the one doing the describing in a perpetual negative space. The explanation is often more focused on what Dada does not represent. Dada does not represent the common, the beliefs that had come before it about what defined art. Dada is about the avant-garde, even though it is technical ly a precursor to avant-garde ideas, but it is questionable that the definition of that term would suffice to describe Dada. Dada can be described for its visual impression, defining what is seen by what is perceived. An example of this is the use of words in order to create a visual impact. What the words say is not more important than the composition of the lettering, the way in which the visual impact performs. The viewer experiences the sensation of reading, but the experience is beyond just that concept. Dada took the evolution of design and printing to a place in which visual impact was used to create communication. At the time of Dada, the explanation of it was obscure; the idea of the irony in its creation meaning that it was the antithesis of all that was art. Dada was â€Å"nothing† as described by Duchamp. According to descriptions by Blythe and Powers (2006, p. 7) â€Å"Dada directed its energies toward challenging accepted notions of art and the tradition of oil painting, most noticeably by designating pre-existing mass produced objects – so called ‘Readymades’ - art and by using the playful language of puns offering humour and simultaneous meanings†. Dada was about using art against itself by creating graphically designed pieces that could be interpreted as anti-art, which in turn made them quintessentially art. The irony of Dada was always that in trying to not be what it was it was more itself. Dada, in not being art, became essentially artistic. Dada was much more than the creation of works of art. The concept of Dada was that it was a culture, defining ways of thinking through new perspectives. Dada was a challenge to the standard, a reversal of tradition in which to be expected would be a sin. Phrases such as â€Å"

Public Health and the Law Assignment Example | Topics and Well Written Essays - 500 words

Public Health and the Law - Assignment Example Any person who tests positive to alcoholic or drug influence or intoxication and driving at the same time, such a person is incapable of driving safely is guilty of an offence which is liable for a sentence as well as a fine. Such offences may be converted to serious criminal charges that may attract long sentences such as life imprisonment. Furthermore, the laws also concern observance and respect for traffic signs. This includes traffic signs concerning turning, stopping, starting, changing of lanes, speed limits, among others. The federal and local states ensure that there are requisite gadgets to ensure that there is surveillance to enable law enforcers to effectively monitor road use. In Illinois, for example, the court may order suspension of driver’s license in the event the user does not follow traffic signs. Federal and local states furthermore ensure that all vehicles in use are adequately insured. This will ensure that passengers and other road users are protected. Furthermore, the insurance also covers maintenance of vehicles in case of damage. Besides, the rules cover the speed limits allowable in given areas, and the use of safety belts. Finally, the laws too cover the action or procedure to be followed in the event of an accident. For example, from 1st January 2013, the Illinois laws allow victims of an accident to remove vehicles from the main way if the accident did not result to an injury. This serves to reduce further accidents that may result from road blockage (Olson & Dewar, 2002). Road safety rules are administrative laws. This is because they involve formulation, enforcement and regulation. Furthermore, there is an agency or agencies, at local or federal levels that ensure that the laws are adhered to. In addition traffic laws are a branch of public laws whose concern is to ensure public road safety. These laws are closely related to public health services since they concern the wellbeing of the whole public while

Dinner With Friends Essay Example | Topics and Well Written Essays - 1000 words

Dinner With Friends - Essay Example The play presents to the audience characters at various levels of life (Margulies 7). The play portrays Beth as an emotional character whose emotions seem to drive her life. Since she is an antithesis to Karen, she does not understand the art of cooking. She concentrates on her immense emotions instead of her coherent thoughts. She does not initiate persuasive communication with her husband, which leads her husband to be untrustworthy to her. Communication becomes crucial to couples as this character depicts (Margulies 13). Beth’s character of exploitation is evident at the first scene, as she seems to look to Karen on various occasions. At the first scene, Karen and Gabe returns from their visit to Italy and passes by Beth’s place. After cooking dinner, they narrate stories to Beth who feigns her concentration. She cannot hide her emotions, as her friends recognize her emotions from her appearance in the face (Margulies 17). She eventually cries. This scene depicts her emotional trait, which she is not capable of hiding. At another encounter, her husband, comes in late and finds that Beth told their friends of the breakup. After an argument, she is not able to control her emotions leading her to slap Tom in the cheek. These scenes depict Beth’s character. Her emotions throughout the play occur by her facial expression. The physique of Beth is such that she has black long hair with white face (Margulies 21). She has a middle height and normal weight. She is at her forties in terms of her age. Though she presented her husband as the problem in their relationship, her behavior made Tom make the decision of leaving her. She failed to care for her spouse. In the play, Tom informs Gabe of Beth’s failure to make love with him a situation that led Tom to seek those needs elsewhere (Margulies 22). Beth is an insensitive character because she does not easily understand why Tom intends to divorce her. From Tom’s narration of the reasons for

IMC Plan On Geico Insurance Company Research Paper

IMC Plan On Geico Insurance Company - Research Paper Example Center of discussion in this paper is GEICO or Government Employees Insurance Company. Founded by Leo & Lillian Goodwin in the year 1936, the Company started its journey as car insurance company for government & military employees. Since then it has seen many changes in its structure & quest for growth. The company has grown by leaps & bounds over these years and is adjudged as 3rd largest auto insurer in private section in US. GEICO is standing tall as part of Berkshire Hathaway headed by Warren Buffet with 8 million policyholders & 17 million vehicles insured under its belt. GEICO started as a company which was catering to the needs of federal & military employees only. The founders Leo & Lillian Goodwin had different marketing plan for their business and the utmost was to lower the cost. This business plan of theirs was made successful with the induction of federal employees in their marketing strategy as this segment of people would be posing low risk and eventually companyâ€⠄¢s profit would not be hampered. Even today GEICO sticks to this objective of its and all through these years one thing which has remained intact with the company is creating customer value through its services. Every firm in today’s time needs to promote itself through various advertisements as to reach maximum number of people and build a strong customer base. GEICO is a company which has always believed in reaching out to people directly than through any agents and for this very reason it has relied on internet communication, through phone and heavily investing on advertisements which in return has increased its customer base. c) Competitive Analysis: Competition is one word which can never be forgotten in context of marketing plan. Every company has a competition in its field and a proper analysis is must to emerge as winners. GEICO also have been facing tough competition from other players but what has made it look different is its excellent coverage, always thriving to keep costs low and last but not the least good service quality to its customers. d) Environmental influences: External or the environmental influences can be broadly divided into 4 categories- i) Economic: GEICO has been considerably climbing the steps towards the numero-uno position and this has been possible because of good economic position of US. Though lately due to recession the things turned ugly but now the economy is back on track and so GEICO can expect further growth. ii) Technological: To keep up with the time and competition GEICO not only needs a good service quality but also innovation in the products. With technology being at par GEICO’s service is further going to make customer happy and more interested in the company for getting their vehicles insured. iii) Political-Legal: A company like GEICO should always make sure it follows all the norms and regulations set by the government to prosper smoothly without any hassle. A politically clean company is most so ught after company by any customer and in a risky business like insurance sector a company surely needs to legally manage its business. iv) Socio-culture: With power comes great responsibilities and for this GEICO should also be socially attached with its