"Which Of The Following Is A Way To Brainstorm For A Cause-And-Effect Essay Topic?"
Wednesday, March 11, 2020
57 choix cest lenfer! â⬠Translation Essay
57 choix cest lenfer! ââ¬â Translation Essay Free Online Research Papers 57 choix cââ¬â¢est lââ¬â¢enfer! Translation Essay Un choix infini à ©tait supposà © promouvoir le progrà ¨s, mais le fait est que cela nous rend davantage malheureux. Quelquefois, il est simplement difficile de choisir. Vous à ªtes dans un restaurant et le serveur est prà ªt prendre la commande. Alors que vous hà ©sitez, il commence progressivement scruter le plafond, puis regarde ses ongles pour enfin observer votre partenaire avec qui, il mà ¨ne une conversation du regard. Chaque plat du menu devient flou mesure que vous le regardez dans une panique grandissante. Enfin, vous choisissez dà ©sespà ©rà ©ment quelque chose qui sââ¬â¢avà ¨rera à ªtre du pied braisà © dans une sauce verte gluante. Il existe des solutions pour faire face ces hà ©sitations socialement inacceptables. Dans le nouveau livre, de Craig Brown, This is Craig Brown, il suggà ¨re de toujours prendre le plat numà ©ro sept lorsque nous sommes confrontà ©s un environnement à ©tranger et un menu à ©crit dans une langue que lââ¬â¢on ne comprend pas. Mais cela nââ¬â¢a pas de sens. Le septià ¨me plat est toujours une purà ©e de quelque chose dans une sauce au curry. Vous devriez toujours opter pour le sixià ¨me plat. Cââ¬â¢est toujours du poulet sauf dans un restaurant và ©gà ©tarien auquel cas, le goà »t ressemblera de toute faà §on du poulet. Toutefois, la pensà ©e de Brown est intrigante car elle dà ©montre que nous avons besoin de procà ©dà ©s afin de nous protà ©ger de notre incapacità © choisir entre 57 varià ©tà ©s de choses peine diffà ©rentiables : que ce soit les chaà ®nes de tà ©là ©vision, les diffà ©rentes sortes de cafà ©, les sonneries de portable tà ©là ©chargeables et peut-à ªtre mà ªme finalement nos diffà ©rentes relations amoureuses. Cette vision est hostile la philosophie de notre gouvernement qui pense quââ¬â¢un plus grand choix parmi les compagnies ferroviaires, dââ¬â¢Ã ©lectricità ©, et les diffà ©rents types dââ¬â¢Ã ©ducation nous rendra heureux. Pour ma part, il nââ¬â¢en est rien. Peut-à ªtre que les gens les plus heureux sont ceux qui nââ¬â¢ont pas beaucoup de choix : il est bien possible que Sisyphe se soit habituà © son sort de faire rouler un rocher. Promà ©thà ©e, encerclà © de rochers, aurait bien pu devenir philosophique en ayant son foie mangà © par un oiseau pour toute lââ¬â¢Ã ©ternità ©. Ils sont tous sortis de leurs habitudes quotidiennes hà ©donistes et, par consà ©quent aucun dââ¬â¢eux ne fut confrontà © la misà ¨re dââ¬â¢un choix interminable. Il est vrai que des personnes nââ¬â¢ayant pas ce luxe ne peuvent peut-à ªtre pas à ªtre confrontà ©s la misà ¨re. Si vous vivez, disons Madagascar, oà ¹ lââ¬â¢espà ©rance de vie moyenne nââ¬â¢excà ¨de pas 40 ans et oà ¹ ils nââ¬â¢ont pas de tà ©là ©vision numà ©rique ou des Starbucks, il est trà ¨s peu probable que vous soyez confrontà ©s lââ¬â¢anxià ©tà ©, au stress, et la paralysie continue causà ©e par le fait de prendre des dà ©cisions. La prise de dà ©cision nââ¬â¢Ã ©tait pas supposà © rendre les gens malheureux. Cââ¬â¢Ã ©tait supposà © à ªtre le contrà ´le de lââ¬â¢autodà ©termination que nous chà ©rissons tant dans une socià ©tà © occidentale capitaliste. Cependant, ce nââ¬â¢est manifestement pas cela : davantage de choix augmente le sentiment dââ¬â¢opportunità ©s manquà ©es, ce qui conduit se reprocher le fait dââ¬â¢avoir manquà © des occasions. Que doit-on faire ? Un nouveau livre dââ¬â¢un scientifique et socialiste amà ©ricain, Barry Schwartz, intitulà © The Paradox of Choice, montre que rà ©duire le nombre de choix peut limiter lââ¬â¢anxià ©tà ©. Research Papers on 57 choix cââ¬â¢est lââ¬â¢enfer! - Translation EssayHip-Hop is ArtEffects of Television Violence on ChildrenThree Concepts of PsychodynamicThe Hockey GameResearch Process Part OneRelationship between Media Coverage and Social andUnreasonable Searches and SeizuresAnalysis Of A Cosmetics AdvertisementIncorporating Risk and Uncertainty Factor in CapitalPersonal Experience with Teen Pregnancy
Monday, February 24, 2020
Dog Pound Movie Review Example | Topics and Well Written Essays - 1000 words
Dog Pound - Movie Review Example The correction facility where the film is based is run by the government which provides resources to hire guards, provide meals, and educate the inmates as part of the correction process. In the US, about 93,000 teenagers are held in juvenile centers that are funded by the state . Some of the inmates in these centers are nonviolent and can receive correction in other intervention programs. The state of New York spends approximately $680 million annually for upkeep of nonviolent drug dealers in juvenile facilities.Davis has been locked up for drug possession and Butch for sociopathic behavior. Incarcerating nonviolent youth in juvenile centers increases the cost of running these facilities. Non-violent offenses can be managed safely in the community thus reducing finances required to run correction facilities. Consequently, juvenile centers have shifted from correction facilities to punishment areas. Youths locked up in these centers become subjects to bullying by other inmates and gu ards. The harsh conditions experienced by inmates in these facilities lead to suicide, stress, and psychiatric problems, which are detrimental to the development process of the teenagers and the community. Sending teenagers to distant detention centers and subjecting them to mandatory long-term sentences is counterproductive. (1)4. The violent events experienced by the actors change Butch from a non-violent prisoner conforming to prison rules to a violent and vengeful prisoner. According to Martin and Eason (1)4 the juvenile correction system is a financial, social, and political disaster that has little benefits to the inmates. The result of these violent encounters is an increase in juvenile related crimes in the society once the inmates are released from the correction facilities. Exclusion, aggressive prosecution of juveniles, and imprisonment of juveniles has led to an increase in crime rates in USA and France (42)5. This can be attributed to bullying and solitary confinement e xperienced by actors in the film. Juvenile facilities contribute to gender violence and queer sexuality among inmates. Davis is bullied and raped by Banks and other inmates when Butch is locked up in solitary cells. The rate of sexual harassment is on the increase in the US and juvenile prisoners are among the abusers (76)6. Forced intercourse experienced in these facilities makes inmates adopt queer sexuality behaviors that are transmitted to the society when they finish serving their prison terms. These events lead to psychological trauma and induce suicidal thoughts among the inmates. In the film, Davis commits suicide after he is physically and sexually abused. This contributed to the increasing suicidal rates in prisons and among ex-convicts. In 2002, there were approximately 1.6 million juvenile arrests in the US. However, the high number of those arrested is caused by teenagers arrested more than once (43).7 Most of these arrests were due to disorderly conduct, running away, drug abuse, and curfew violations. Some of those arrested were members of criminal gangs that committed crimes in groups. Some of these groups have
Friday, February 7, 2020
See intructions Case Study Example | Topics and Well Written Essays - 500 words
See intructions - Case Study Example More specifically, the United States ISTEA (Intermodal Surface Transportation Efficiency Act) positively affected intermodal transportation. Enacted in 1991, the legislation supported intermodal carriers by noting high priority corridors across the country considered essential for improving the efficiency of transport (Konings, Priemus, and Nijkamp, 2008). Deregulation in the United States paved way for the movement of products as benchmarks for health and security. The United States and EU can only enact some regulation statues at various levels through courses of action that assist in securing the intermodal transportation sectors. This deregulation calls for modifications in logistics as seen with the 1980 Motor Carrier Act (Konings et al., 2008). Once approved, this regulation allowed new trucking carriers to spring up since the intermodal transpiration sector was secure for investment. This legislation was considered largely a deregulation of the trucking sector that saw a significant decline in the cost of stocking and sustaining inventories. Further research showed that this partial deregulation led to the expansion and continued growth of the United Statesââ¬â¢ trucking industry. Regulation also fosters current competition among transporters by removing price fixing. This implication is arguably positive since different carriers from the United States and EU would view it otherwise. Most EU carriers are obligatory supporters of the stronger position or new carrier of this effect of regulation (Woxenius and Barthel, 2008). On the other hand, United States carriers do not support stronger positions or new industry players incumbently. Approaches to safeguard the competitive setting of the intermodal industry are often part of this type of regulation and often only new market entrants find it advantageous. This advantage arises from the regulationââ¬â¢s decrease of potential obstacles to entering the intermodal
Wednesday, January 29, 2020
Importance of television in our life Essay Example for Free
Importance of television in our life Essay Natural rubber, also called India rubber or caoutchouc, as initially produced, consists of suitable polymers of the organic compound isoprene, with minor impurities of other organic compounds plus water. Forms of polyisoprene that are useful as natural rubbers are classified aselastomers. Currently, rubber is harvested mainly in the form of the latex from certain trees. The latex is a sticky, milky colloid drawn off by making incisions into the bark and collecting the fluid in vessels in a process called tapping. The latex then is refined into rubber ready for commercial processing. Natural rubber is used extensively in many applications and products, either alone or in combination with other materials. In most of its useful forms, it has a large stretch ratio, high resilience, and is extremely waterproof.[1] Varieties[edit] The major commercial source of natural rubber latex is the Parà ¡ rubber tree (Hevea brasiliensis), a member of the spurge family, Euphorbiaceae. This species is widely used because it grows well under cultivation and a properly managed tree responds to wounding by producing more latex for several years. Many other plants produce forms of latex rich in isoprene polymers, though not all produce usable forms of polymer as easily as the Parà ¡ rubber tree does; some of them require more elaborate processing to produce anything like usable rubber, and most are more difficult to tap. Some produce other desirable materials, for example gutta-percha (Palaquium gutta)[2] and chicle from Manilkara species. Others that have been commercially exploited, or at least have shown promise as sources of rubber, include the rubber fig (Ficus elastica), Panama rubber tree (Castilla elastica), various spurges (Euphorbia spp.), lettuce (Lactuca species), the related Scorzonera tau-saghyz, various Taraxacum species, including common dandelion (Taraxacum officinale) and Russian dandelion (Taraxacum kok-saghyz), and guayule (Parthenium argentatum). The term gum rubber is sometimes applied to the tree-obtained version of natural rubber in order to distinguish it from the synthetic version.[1] Discovery of commercial potential[edit] The Para rubber tree is indigenous to South America. Charles Marie de La Condamine is credited with introducing samples of rubber to the Acadà ©mie Royale des Sciences of France in 1736.[3] In 1751, he presented a paper by Franà §ois Fresneau to the Acadà ©mie (eventually published in 1755) which described many of the properties of rubber. This has been referred to as the first scientific paper on rubber.[3] In England, Joseph Priestley, in 1770, observed that a piece of the material was extremely good for rubbing off pencil marks on paper, hence the name rubber. Later, it slowly made its way around England. South America remained the main source of the limited amounts of latex rubber used during much of the 19th century. In 1876, Henry Wickham gathered thousands of Para rubber tree seeds from Brazil, and these were germinated in Kew Gardens, England. The seedlings were then sent to India, Ceylon (Sri Lanka), Indonesia, Singapore, and British Malaya. Malaya (now Malaysia) was later to become the biggest producer of rubber. In the early 1900s, the Congo Free State in Africa was also a significant source of natural rubber latex, mostly gathered by forced labor. Liberia and Nigeria also started production of rubber. In India, commercial cultivation of natural rubber was introduced by the British planters, although the experimental efforts to grow rubber on a commercial scale in India were initiated as early as 1873 at the Botanical Gardens, Calcutta. The first commercial Hevea plantations in India were established at Thattekadu in Kerala in 1902. In Singapore and Malaya, commercial production of rubber was heavily promoted by Sir Henry Nicholas Ridley, who served as the first Scientific Director of the Singapore Botanic Gardens from 1888 to 1911. He distributed rubber seeds to many planters and developed the first technique for tapping trees for latex without causing serious harm to the tree.[4]Because of his very fervent promotion of this crop, he is popularly remembered by the nickname Mad Ridley.[5] Properties[edit] Rubber latex Rubber exhibits unique physical and chemical properties. Rubbers stress-strain behavior exhibits the Mullins effect and the Payne effect, and is often modeled as hyperelastic. Rubber strain crystallizes. Owing to the presence of a double bond in each repeat unit, natural rubber is susceptible to vulcanisation and sensitive to ozone cracking. The two main solvents for rubber are turpentine and naphtha (petroleum). The former has been in use since 1764 when Franà §ois Fresnau made the discovery. Giovanni Fabbroni is credited with the discovery of naphtha as a rubber solvent in 1779. Because rubber does not dissolve easily, the material is finely divided by shredding prior to its immersion. An ammonia solution can be used to prevent the coagulation of raw latex while it is being transported from its collection site. Elasticity[edit] In most elastic materials, such as metals used in springs, the elastic behavior is caused by bond distortions. When force is applied, bond lengths deviate from the (minimum energy) equilibrium and strain energy is stored electrostatically. Rubber is often assumed to behave in the same way, but this is a poor description. Rubber is a curious material because, unlike in metals, strain energy is stored thermally. In its relaxed state, rubber consists of long, coiled-up chains. When rubber is stretched, the chains are taut. Their kinetic energy is released as heat. The entropy and temperature increases during elongation but decreases during relaxation. This change in entropy is related to the changes in degrees of freedom. Relaxation of a stretched rubber band is thus driven by a decrease in entropy and temperature, and the force experienced is a result of the cooling of the material being converted to potential energy. Rubber relaxation isendothermic, and for this reason the force exerted by a stretched piece of rubber increases with temperature. The material undergoes adiabatic cooling during contraction. This property of rubber can easily be verified by holding a stretched rubber band to ones lips and relaxing it. Stretching of a rubber band is in some ways opposite to compression(although both undergo higher levels of thermal energy of an ideal gas), and relaxation is opposed to gas expansion (Note: rubber bands last longer in the cold). A compressed and heated gas also exhibits elastic properties, for instance inside an inflated car tire. The fact that stretching is equivalent to compression is counterintuitive, but it makes sense if rubber is viewed as a one-dimensional gas, plus it is attached to other molecules. Stretching and heat increase the space available to each section of chain, because the molecules are pulled apart. Vulcanization of rubber creates disulfide bonds between chains, so it limits the degrees of freedom. The result is that the chains tighten more quickly for a given strain, thereby increasing the elastic force constant and making rubber harder and less extensible. When cooled below the glass transition temperature, the quasifluid chain segments freeze into fixed geometries and the rubber abruptly loses its elastic properties, although the process is reversible. This property it shared by most elastomers. At very low temperatures, rubber is rather brittle. This critical temperature is the reason winter tires use a softer version of rubber than normal tires. The failing rubber o-ring seals that contributed to the cause of the Challenger disaster were thought to have cooled below their critical temperature; the disaster happened on an unusually cold day. The gas molecules in the rubber were too close to their bound solid molecules(a partial phase change that separated the rubber molecules may have occurred), allowing the rubber to take on a more solid shape(a partial phase change to a more liquid and molecularly separated form would not be good, either). Heated gas has a higher energy, and rubber must be kept at specific temperatures and probably should not be used on vehicles that undergo extreme temperature changes. Chemical makeup[edit] Latex is the polymer cis-1,4-polyisoprene ââ¬â with a molecular weight of 100,000 to 1,000,000 daltons. Typically, a small percentage (up to 5% of dry mass) of other materials, such as proteins, fatty acids, resins, and inorganic materials (salts) are found in natural rubber. Polyisoprene can also be created synthetically, producing what is sometimes referred to as synthetic natural rubber, but the synthetic and natural routes are completely different.[1] Chemical structure of cis-polyisoprene, the main constituent of natural rubber: Synthetic cis-polyisoprene and natural cis-polyisoprene are derived from different precursors. Some natural rubber sources, such as gutta-percha, are composed of trans-1,4-polyisoprene, a structural isomer that has similar, but not identical, properties. Natural rubber is an elastomer and a thermoplastic. Once the rubber is vulcanized, it will turn into a thermoset. Most rubber in everyday use is vulcanized to a point where it shares properties of both; i.e., if it is heated and cooled, it is degraded but not destroyed. The final properties of a rubber item depend not just on the polymer, but also on modifiers and fillers, such as carbon black, factice, whiting, and a host of others. Biosynthesis[edit] Rubber particles are formed in the cytoplasm of specialized latex-producing cells called laticifers within rubber plants.[6] Rubber particles are surrounded by a single phospholipid membrane with hydrophobic tails pointed inward. The membrane allows biosynthetic proteins to be sequestered at the surface of the growing rubber particle, which allows new monomeric units to be added from outside the biomembrane, but within the lacticifer. The rubber particle is an enzymatically active entity that contains three layers of material, the rubber particle, a biomembrane, and free monomeric units. The biomembrane is held tightly to the rubber core due to the high negative charge along the double bonds of the rubber polymer backbone.[7] Free monomeric units and conjugated proteins make up the outer layer. The rubber precursor is isopentenyl pyrophosphate (an allylic compound), which elongates by Mg2+-dependent condensation by the action of rubber transferase. The monomer adds to the pyrophosphate end of the growing polymer.[8] The process displaces the terminal high-energy pyrophosphate. The reaction produces a cis polymer. The initiation step is catalyzed by prenyltransferase, which converts three monomers of isopentenyl pyrophosphate into farnesyl pyrophosphate.[9] The farnesyl pyrophosphate can bind to rubber transferase to elongate a new rubber polymer. The required isopentenyl pyrophosphate is obtained from the mevalonate pathway, which is derives from acetyl-CoA in the cytosol. In plants, isoprene pyrophosphate can also be obtained from 1-deox-D-xyulose-5-phosphate/2-C-methyl-D-erythritol-4-phosphate pathway within plasmids.[10] The relative ratio of the farnesyl pyrophosphate initiator unit and isoprenyl pyrophosphate elongation monomer determines the rate of new particle synthesis versus elongation of existing particles. Though rubber is known to be produced by only one enzyme, extracts of latex have shown numerous small molecular weight proteins with unknown function. The proteins possibly serve as cofactors, as the synthetic rate decreases with complete removal.[11] Current sources[edit] Close to 21 million tons of rubber were produced in 2005, of which approximately 42% was natural. Since the bulk of the rubber produced is of the synthetic variety, which is derived from petroleum, the price of natural rubber is determined, to a large extent, by the prevailing global price of crude oil.[12][13] Today, Asia is the main source of natural rubber, accounting for about 94% of output in 2005. The three largest producing countries, Thailand, Indonesia (2.4m tons)[14] and Malaysia, together account for around 72% of all natural rubber production. Natural rubber is not cultivated widely in its native continent of South America due to the existence of South American leaf blight, and other natural predators of the rubber tree. Cultivation[edit] Rubber is generally cultivated in large plantations. See the coconut shell used in collecting latex, in plantations in Kerala, India Rubber latex is extracted from rubber trees. The economic life period of rubber trees in plantations is around 32 years ââ¬â up to 7 years of immature phase and about 25 years of productive phase. The soil requirement of the plant is generally well-drained, weathered soil consisting of laterite, lateritic types, sedimentary types, nonlateritic red, or alluvial soils. The climatic conditions for optimum growth of rubber trees are: Rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year Temperature range of about 20 to 34à °C, with a monthly mean of 25 to 28à °C High atmospheric humidity of around 80% Bright sunshine amounting to about 2000 hours per year at the rate of six hours per day throughout the year Absence of strong winds Many high-yielding clones have been developed for commercial planting. These clones yield more than 2,000 kg of dry rubber per hectare per year, when grown under ideal conditions. Field coagula[edit] Mixed field coagula Smallholders lump at a remilling factory There are four types of field coagula, cuplump, treelace, smallholdersââ¬â¢ lump and earth scrap. Each has significantly different properties.[15] Cuplump is the coagulated material found in the collection cup when the tapper next visits the tree to tap it again. It arises from latex clinging to the walls of the cup after the latex was last poured into the bucket, and from late-dripping latex exuded before the latex-carrying vessels of the tree become blocked. It is of higher purity and of greater value than the other three types. Treelace is the coagulum strip that the tapper peels off the previous cut before making a new cut. It usually has higher copper and manganese contents than cuplump. Both copper and manganese are pro-oxidants and can lower the physical properties of the dry rubber. Smallholdersââ¬â¢ lump is produced by smallholders who collect rubber from trees a long way away from the nearest factory. Many Indonesian smallholders, who grow paddy in remote areas, tap dispersed trees on their way to work in the paddy fields and collect the latex (or the coagulated latex) on their way home. As it is often impossible to preserve the latex sufficiently to get it to a factory that processes latex in time for it to be used to make high quality products, and as the latex would anyway have coagulated by the time it reached the factory, the smallholder will coagulate it by any means available, in any container available. Some smallholders use small containers, buckets etc., but often the latex is coagulated in holes in the ground, which are usually (but not always) lined with plastic. Acidic materials and fermented fruit juices are used to coagulate the latex ââ¬â a form of assisted biological coagulation. Little care is taken to exclude twigs, leaves, and even bark from the lumps that are formed, which may also include treelace collected by the smallholder. Earth scrap is the material that gathers around the base of the tree. It arises from latex overflowing from the cut and running down the bark of the tree, from rain flooding a collection cup containing latex, and from spillage from tappersââ¬â¢ buckets during collection. It contains soil and other contaminants, and has variable rubber content depending on the amount of contaminants mixed with it. Earth scrap is collected by the field workers two or three times a year and may be cleaned in a scrap-washer to recover the rubber, or sold off to a contractor who will clean it and recover the rubber. It is of very low quality and under no circumstances should it be included in block rubber or brown crepe. Processing[edit] Removing coagulum from coagulating troughs The latex will coagulate in the cups if kept for long. The latex has to be collected before coagulation. The collected latex, field latex, is transferred into coagulation tanks for the preparation of dry rubber or transferred into air-tight containers with sieving for ammoniation. Ammoniation is necessary to preserve the latex in colloidal state for long. Latex is generally processed into either latex concentrate for manufacture of dipped goods or it can be coagulated under controlled, clean conditions using formic acid. The coagulated latex can then be processed into the higher-grade, technically specified block rubbers such as SVR 3L or SVR CV or used to produce Ribbed Smoke Sheet grades. Naturally coagulated rubber (cup lump) is used in the manufacture of TSR10 and TSR20 grade rubbers. The processing of the rubber for these grades is a size reduction and cleaning process to remove contamination and prepare the material for the final stage of drying.[16] The dried material is then baled and palletized for storage and shipment in various methods of transportation. Transportation[edit] Natural rubber latex is shipped from factories in south-west Asia, South America, and North Africa to destinations around the world. As the cost of natural rubber has risen significantly, the shipping methods which offer the lowest cost per unit of weight are preferred. Depending on the destination, warehouse availability, and transportation conditions, some methods are more suitable to certain buyers than others. In international trade, latex rubber is mostly shipped in 20-foot ocean containers. Inside the ocean container, various types of smaller containers are used by factories to store latex rubber.[17] Uses[edit] Compression molded (cured)rubber boots before the flashesare removed Contemporary manufacturing[edit] Around 25 million tonnes of rubber is produced each year, of which 42 percent is natural rubber. The remainder is synthetic rubber derived from petrochemical sources. Around 70 percent of the worlds natural rubber is used in tires. The top end of latex production results in latex products such as surgeons gloves, condoms, balloons and other relatively high-value products. The mid-range which comes from the technically-specified natural rubber materials ends up largely in tires but also in conveyor belts, marine products and miscellaneous rubber goods. Natural rubber offers good elasticity, while synthetic materials tend to offer better resistance to environmental factors such as oils, temperature, chemicals or ultraviolet light and suchlike. Cured rubber is rubber which has been compounded and subjected to the vulcanisation process which creates cross-links within the rubber matrix. Prehistoric uses[edit] The first use of rubber was by the Olmecs, who centuries later passed on the knowledge of natural latex from the Hevea tree in 1600 BC to the ancient Mayans. They boiled the harvested latex to make a ball for a Mesoamerican ballgame.[18] Pre-World War II manufacturing[edit] Other significant uses of rubber are door and window profiles, hoses, belts, gaskets, matting, flooring, and dampeners (antivibration mounts) for the automotive industry. Gloves (medical, household and industrial) and toy balloons are also large consumers of rubber, although the type of rubber used is concentrated latex. Significant tonnage of rubber is used as adhesives in many manufacturing industries and products, although the two most noticeable are thepaper and the carpet industries. Rubber is also commonly used to make rubber bands and pencil erasers. Pre-World War II textile applications[edit] Rubber produced as a fiber, sometimes called elastic, has significant value for use in the textile industry because of its excellent elongation and recovery properties. For these purposes, manufactured rubber fiber is made as either an extruded round fiber or rectangular fibers that are cut into strips from extruded film. Because of its low dye acceptance, feel and appearance, the rubber fiber is either covered by yarn of another fiber or directly woven with other yarns into the fabric. In the early 1900s, for example, rubber yarns were used in foundation garments. While rubber is still used in textile manufacturing, its low tenacity limits its use in lightweight garments because latex lacks resistance to oxidizing agents and is damaged by aging, sunlight, oil, and perspiration. Seeking a way to address these shortcomings, the textile industry has turned to neoprene (polymer of chloroprene), a type of synthetic rubber, as well as another more commonly used elastomer fiber, spandex (also known as elastane), because of their superiority to rubber in both strength and durability. Vulcanization[edit] Main article: Vulcanization Natural rubber is often vulcanized, a process by which the rubber is heated and sulfur, peroxide or bisphenol are added to improve resistance and elasticity, and to prevent it from perishing. The development of vulcanization is most closely associated with Charles Goodyear in 1839.[19] Before World War II era manufacturing, carbon black was often used as an additive to rubber to improve its strength, especially in vehicle tires. Today, all vehicle tires are made of synthetic rubbers. Allergic reactions[edit] Main article: Latex allergy Some people have a serious latex allergy, and exposure to natural latex rubber products such as latex gloves can cause anaphylactic shock. The antigenic proteins found in Hevealatex may be deliberately reduced (though not eliminated)[20] through processing. Latex from non-Hevea sources, such as Guayule, can be used without allergic reaction by persons with an allergy to Hevea latex.[21] Some allergic reactions are not to the latex itself, but from residues of chemicals used to accelerate the cross-linking process. Although this may be confused with an allergy to latex, it is distinct from it, typically taking the form of Type IV hypersensitivity in the presence of traces of specific processing chemicals.[20][22]
Tuesday, January 21, 2020
What Could Have Been... :: essays research papers
à à à à à As I started down the long, narrow, hallway I felt my heart beating faster and my stomach rising into my throat. With much difficulty I kept my head up and my eyes forward, trying desperately to not view inside any of the rooms to the left or right. The hospital smell was stronger then ever and every little noise seemed as loud as thunder...almost like I had two water glasses up to my ears that just echoed every sound. Suddenly Iââ¬â¢m stopped dead in my tracks by an orderly who senses that Iââ¬â¢m lost or at least having trouble finding whatever it is that I was looking for. She was very sweet, and we probably conversed for a good 3 minutes, but no matter how hard I try I cannot remember one word that we exchanged. Itââ¬â¢s almost like I had a conversation with her in my sleep and the second I walked past her it was like a dream, which I was barely able to remember. Well I guess I should explain where I am and why Iââ¬â¢m here before I continue with m y story...weââ¬â¢ll go back to 3 hours ago, that should catch you up to speed. à à à à à ââ¬Å"Shit Sean your such a dumb ass, how could you forget the tap? How the hell are we supposed to get into a keg without a fucking tap? So now what do you suppose we do...get a nail gun and poke holes through it and get the whole 30 people at our party straws? I canââ¬â¢t rely on you to do anything right!â⬠à à à à à ââ¬Å"Jesus Kim, Iââ¬â¢m sorry, I just forgot, kill me why donââ¬â¢t you...Iââ¬â¢m sorry Iââ¬â¢m sorry Iââ¬â¢m sorry, what else can I say? Instead of sitting here and lecturing me about it why donââ¬â¢t you just get off your ass and come with me to find one?â⬠à à à à à ââ¬Å"No Sean, your on your own here, that was your only job, and I think you can handle it yourself, I have a ton of stuff to get ready here at the house.â⬠à à à à à ââ¬Å"Fine!â⬠à à à à à ââ¬Å"Fine!â⬠à à à à à As the door slammed I ran into the kitchen to start getting things ready for our little get together that my brother and I had been planning since our parents told us about their little trip to NYC for the weekend. The worst part about all of this is that I could have really cared less about the party, I have been in college for 2 years now, and sitting around and getting drunk really wasnââ¬â¢t unexplored territory.
Monday, January 13, 2020
Describe the Three Different Parenting Styles and Discuss How They Might Impact on Children’s Behavior
According to Diana Baumrind, a clinical and developmental psychologist, parents will use one of three parenting styles. Baumrind based these three parenting styles on four factors; Disciplinary strategies, Warmth and Nurturance, Communication styles and expectations of maturity and control, these were identified as the four dimensions of parenting. I will now discuss the three parenting styles and the impacts these styles have on childrenââ¬â¢s behaviour. Baumrindââ¬â¢s three parenting styleââ¬â¢s, based on the four dimensions of parenting are; Authoritarian, Permissive and Authoritative. Authoritarian parents set very strict disciplinary rules; they expect their children to follow strict rules and regulations with strict boundaries. They exert their control over their children by telling them what they can and canââ¬â¢t do, without giving them choices or options. Authoritarian parents often scold and punish their children, often in a harsh manner, for not following their rules. Words and phrases an Authoritarian parent may use might include; ââ¬Å"ââ¬ËNo you canââ¬â¢t â⬠¦. ââ¬â¢, ââ¬ËBecause I say so, thatââ¬â¢s whyââ¬â¢, ââ¬ËDo it, do it NOW! â⬠(2013) According to Baumrind, these parents are ââ¬Å"obedience and status orientated and expect their orders to be obeyed without explanationâ⬠(1991) Permissive parents make very few demands on their children and rarely discipline or punish them. They have low expectations of self-control and maturity and are often communicative and nurturing with their children, preferring to be more of a friend than a parent. Words and phrases a Permissive parent may use might include; ââ¬Å"ââ¬â¢Itââ¬â¢s up to you. If thatââ¬â¢s what you really want to do then â⬠¦. ââ¬â¢Ã¢â¬â¢The reason for wanting you to â⬠¦Ã¢â¬ ¦ is â⬠¦Ã¢â¬ ¦. ââ¬â¢Well, if you donââ¬â¢t feel like it â⬠¦.. ââ¬â¢Ã¢â¬ (2013) According to Baumrind, Permissive parents ââ¬Å"are more responsive than they are demanding. They are non-traditional and lenient and do not require mature behaviour, they allow considerable self-regulation and avoid confrontationâ⬠(1991) Authoritative parenting style is very much like the Authoritarian parenting style in as much as they also like to establish rules and guidelines that their children are expected to follow, however, this style is much more lenient as these parents realise that sometim es flexibility is required. When children fail to meet expectations, the parents are nurturing and forgiving. Authoritative parents are responsive to their children and are willing to listen to and answer questions asked by the child / children. Words and phrases an Authoritative parent may use might include;â⬠ââ¬â¢This is my viewâ⬠¦.. but what are your thoughts? ââ¬â¢, ââ¬ËSorry, but I thought we agreed â⬠¦Ã¢â¬ ¦ ââ¬â¢Ã¢â¬ (2013) Baumrind suggests that these parents ââ¬Å"monitor and impart clear standards for their childrenââ¬â¢s conduct. They are assertive, but not intrusive and restrictive. Their disciplinary methods are supportive rather than punitive. They want their children to be assertive as well as socially responsible and self-regulated as well as co-operativeâ⬠(1991) Behaviour can be both good and bad, of the three parenting styles, the Authoritarian is the most ineffective as children will be obedient, but disrespectful, angry, mistrustful, defiant, withdrawn and rebellious (as they grow up) due to the strict rules and regulations set by the parents. Permissive parenting is deemed a very negligent style of parenting due to the lack of rules and boundaries, although impacts can be both negative and positive, children of permissive parents tend to be irresponsible, impulsive, immature, insecure, demanding, self-centred and will show a poor performance academically, but positive impacts are better social skills and belief in themselves. The Authoritative style has to be the best style of parenting as they exercise a balanced control over their children by setting clear standards, rules and guidelines with non-punitive punishment, whilst encouraging them to be independent individuals, they will listen to what the child has to say and is open to negotiation leading to happy, socially competent children who are independent and full of self-esteem. It is not only parenting styles that impact on childrenââ¬â¢s behaviour; other factors in a childââ¬â¢s life can also affect behaviour, i. e. negative or traumatic family incidents like bereavement, illness, abuse, cultural and religious beliefs, bullying and peer pressure to name but a few, for example; ââ¬Å"Thomas found it hard to adjust to sharing his parents with Rowanna when she was first bornâ⬠causing his behaviour to change dramatically. (Open University 2013, pg32) To conclude, I have shown that parenting styles vary considerably, have different impacts on children and behaviour and all have negative and positive effects and that it is not just parenting styles that impact on childrenââ¬â¢s behaviour, as children raised in dramatically different environments can later grow up to have remarkably similar personalities and also children who share a home and are raised in the same manner, can grow up to have dramatically different personalities. But of the three parenting styleââ¬â¢s, the one deemed to be the best style of parenting is the Authoritative parenting style, as it is a well balanced style with warmth, support and acceptance. There is control over children but without being controlling. There are firm rules and guidelines set in place, but there is room for flexibility when needed leading to happy, socially competent, independent, confident high achieving children.
Sunday, January 5, 2020
A Variety Of Literature Revolves Around Identity - 1826 Words
Aiswarya Vincent Professor Chad Jewett First Draft English 2203W 20 November 2014 Identity A variety of literature revolves around identity. In fact, most stories include the dilemma with self-identity no matter what format or media they are told in. The thought process of Esther Greenwood from Sylvia Plathââ¬â¢s novel ââ¬Å"The Bell Jarâ⬠reveals a complex array of desires and ideals based on high expectations, all of which are never met and aid in her depression. Sylvia Plath parallels her struggle with depression and illustrates the pressures that illicit this psychosis in The Bell Jar. It is plainly woven through 1950s society how women often spiraled into depression from both the restrictions and the high expectancy that conforms them. Esther Greenwood is the main character in Sylvia Plathââ¬â¢s novel The Bell Jar. Esther is brilliant, beautiful, enormously talented, and successful, but slowly going underââ¬âmaybe for the last time (Plath). If we take the division of Estherââ¬â¢s self as the motive or starting point of the novelââ¬â¢s plot, the central action of The Bell Jar may be described as the attempt to heal the fracture between inner self and false-self system so that a real and viable identity can come into existence. But because, everyone in a way wears a mask, Estherââ¬â¢s experience differs from that of so-called ââ¬Å"normalâ⬠girls in degree rather than in kind. It is simply a stylized or heightened version of the young American girlââ¬â¢s quest to forge her own identity, to be herself ratherShow MoreRelatedRace, Ethnicity, Art and Film Essay826 Words à |à 4 Pagesis belonging to a specific ethnic group possessing distinct culture and common origin. This is called inscriptiv e group identity. According to Said Edward (1993) a good introduction to matters of societal concern and especially those of out context should be put into their political and social cultural contexts. 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