Industry Analysis by Stage in PLC Essay Example | Topics and Well Written Essays - 1000 words - 4

Industry Analysis by Stage in PLC - Essay Example The product sectors of the ice cream industry are shown below. Revenues of take-home ice cream made 67.2% of the US ice cream market value. Impulse ice cream captured 14%. Artisanal ice cream and frozen yoghurt seized 10% and 9% respectively. (Datamonitor, 2008) Economic slow-down or recession greatly affects every industry including the ice cream industry. Ice cream manufacturers have reduced its packaging size in order to compensate the trade-off of the rising costs of production. (Berry, 2009) However, the economic recession distorted the buying behavior of customers such that a shift in consumer demand is observed in large chains of stores. Customers now prefer to eat take-home ice cream than other products in the sector. The shift in consumer behavior is evident on the high percentage of share by value on take-home ice creams. (Ice Cream Going Private Label, 2009) A health issue such as obesity problem and wellness concerns also affects the market performance. People are becoming aware of their eating habits such that they prefer to live a healthy life by choosing non-fattening foods. Ice cream is generally characterized as fattening product. Consumers control their purchases of ice cream in order to prevent obesity and other illnesses. (Peot, 2008) The US ice cream market is categorized as a high volume but low margin market where buyer power is high. The buyers of ice cream are mostly large chains of supermarkets and grocers. Manufacturers compete with each other to supply the store spaces with their products. The top competing companies in the US ice cream market are Blue Bell Creameries, Nestle and Unilever. Blue Bell Creameries carries the Blue Bell ice cream brand with over 50 different ice cream flavors. Nestle’s ice cream is promoted under several brands such as Dreyer’s, Haagen Daz, Sveltesse stick and Legend Real Daily. Unilever has brands like Cornetto, Magnum,

Seven Characters for Seven Sins of the Modern Society Movie Review

Seven Characters for Seven Sins of the Modern Society - Movie Review Example This paper declares that the film starts with gluttony and the first victim is an obese man, who was forced by John Doe to feed himself to death. It is striking that sins and types of punishment are closely related as it is exemplified in the death of the obese man. Andrew James Johnston notes that â€Å"the murders adhere to Dantean principle of contrapasso, according to which a punishment must resemble the sin for which it is inflicted†. Although the plot alludes to Dante and Chaucer as the sources of the concept of seven deadly sins in a medieval fashion, somehow, it is still rooted in American way. Indeed, obesity is a morbid health problem threatening millions of Americans including children and adolescents. This essay stresses that Fincher’s everyman â€Å"John Doe† pushes the gluttony to its utmost limits to show the dark side of insatiable hunger, which affects millions of people. By using the obese men as a character, Fincher portrays the insatiable and unrestricted hunger of the modern consumer society. The second victim, a rich lawyer called Eli Gould, also suffers from excessive love; he represents people’s greed and obsession with money in contemporary capitalist societies. The office of murdered lawyer reflects the atmosphere of cold, calculating rationality of business world, with its modernist decoration e.g. abstract paintings, Marcel Breuer Chairs, Le Courbusier Settees. Eli Gould is characterized as a very ambitious attorney who had helped a pedophile to escape conviction for the rape. John Doe punishes the sin of Gould by making him bleed to death. Besides greed, Gould also represents decaying justice system of the society, which allows child rapists t o become free. Although Victor escapes the justice system with the help of Gould, he becomes the â€Å"Sloth† victim of John Doe. As Hill and Smith notes â€Å"sloth is derived from Latin acadia meaning ‘without care’† and it also denotes apathy and lack of feeling (14). John Doe punishes Victor’s apathy by tying him to a bed. His literal immobility, or what Summerset calls as his â€Å"forced contrition†, represents the idleness of a â€Å"sloth†. Furthermore, Victor, embodies uncaring, â€Å"minding your own business† attitude of everyman which Doe protests at the end of the movie while he

Economics of Labor Immigration Essay Example | Topics and Well Written Essays - 1000 words

Economics of Labor Immigration - Essay Example Evidently, those countries do not have enough skilled workforces to meet their labor needs and therefore they are compelled to depend on skilled immigrant workers. Hence, immigration greatly assists a developed/developing economy to meet its growing demand for labor in different sectors. As Kenny (2012) reports, immigration significantly contributes to the sustainability of Americans’ quality of life, which is a direct indicator of a nation’s economic development. The author strongly argues that immigration notably benefits the US to obtain a skilled group of workers from overseas countries. To justify his views, Kenny refers to a study conducted by Patricia Cortes and Jessica Pan. This study reports that the percent of foreign-educated nurses who attend the US licensure exam increased from 6% in the mid-1980s to over 20% in current days. The study also indicates that nurses who were educated in Philippines earn nearly 4% more than the average nursing wage due to their high quality work. In short, many vacancies for qualified and skilled workers in US would be left unfilled if the Federal government adopts a hostile approach towards immigration. Similarly, an aging population in the United States and Europe is likely to impede their growth rate because old people are less productive. Evidently, an elderly individual cannot complete his job task as fast and efficiently as one of his young colleagues does. Hence, an aging workforce would negatively impact organizational productivity and ultimately a nation’s economic performance. However, immigration can better address this issue because there are millions of qualified immigrant workers searching for employment. Kenny (2012) points out that... This essay analyzes how immigration influences the factors contributing to economic growth. Considering the impacting changes in the economic profile of the developed countries and the challenges facing the conservative business models, the need for luring the innovative thoughts is of prime requirement now. In addition, the recovery of an economy that had undergone severe financial crises and a series of corporate failures has to be backed up by uninterrupted supply of potential human capital. It seems that industrially developed countries largely depend on immigrants to meet their workforce needs. However, many people argue that growing immigrant population steals a notable percent of Americans’ jobs and this situation would adversely affect the overall economic development of the country. From the discussion, that was presented in the essay it is clear that immigration can positively influence factors contributing to economic growth. Immigration is essential to meet the gro wing demand for labor in the United States. In addition, the researcher states that it is a better solution to the problem of an aging workforce population in the country. Employment of skilled immigrants is a recommendable strategy to boost the technological advancement of the US. Finally, immigration can noticeably contribute to technology and innovation. In conclusion, the researcher suggests that it is advisable for the United States Congressman to make necessary arrangements for liberalizing immigration laws in the nation.

Political Movement in Hong Kong Essay Example for Free

Political Movement in Hong Kong Essay A. Introduction Moral and national education is a school curriculum proposed by the Education Bureau of Hong Kong to replace the original civil and moral education which aimed at developing a positive value and attitude of students, building a well quality of moral and national sense.1 In 3rd October 2010, the Hong Kong Chief Executive, Donald Tsang stated in his policy address, the moral and national education will be introduced to the education syllabus of the primary school and secondary school in 2012 and 2013 respectively with the aim of strengthening the national education of students in Hong Kong. However, this curriculum brought to a large controversy among the society of Hong Kong. Organizations like the scholarism, national education parent concern group and the Hong Kong Professional Teachers Union, etc. opposed the need of proposing this curriculum for two main reasons, first, that is unnecessary to introduce this subject independently since the syllabus of Chinese history and Liberal studies have overlapped with moral and national education. Second, this curriculum is compulsorily introducing the sense of national patriot to students, education will come down to be the tool of political brain washing to students. Therefore, various social networks organized an anti-national education movement, which resulted in a great ring of the public and the concession of the government. In this movement, social networks play an important role, they facilitate the mobilization of people, bringing awareness of the people so as to enlarge the scale of the movement. In this paper, I will mainly investigate the role of social networks in strengthening and undermining the movement, and also the effort tin bringing participant with different or similar background together. On the other hand, I wll discuss the importance of internet in strengthening and undermining the movement in various aspects. B. Strength of social networks in unfolding the movement There are a few social networks that remarkably helped the development of the anti-national education movement, not only on their own work, but also in attracting the other social networks to join their work and charm the participation. 1. Scholarism The first social network strengthen the movement is scholarism, this  organization is founded by a group of post-90s in 2011, which aimed at opposing the implementation of national education curriculum in Hong Kong. They are the originator of the anti-national education movement and then raise the attention of the people. Early in the 1st July 2011, they have joined the Hong Kong 1 July protest to speak out their request to government to withdraw the implementation of national education in Hong Kong education curriculum. Their voice and popularity then rose with a chain of participation in different movements organized by other social networks, for instance, they have joined the petition demanding the redress the June fourth incident in China, attend the TV programme City Forum, etc. Scholarism tried their best to get the attention of the government and also the public, many other social network have then discover and aware this organizations, nearly 20 social networks, for instanc e, national education parent concern group and the Hong Kong Professional Teachers Union then joined together and formed the alliance of opposing national education. The theory mentioned by Della Porta, D. and Diani, M. can be applied to this, people can often become involved in a specific movement or campaign through their previous links, and their participation will forges new links. The alliance then took a great step to unfold the movement by organizing a demonstration with the slogan of â€Å"no brain washing† on the 29th July 2012. 2. National education parent concern group The second social network that remarkably helped to unfold the movement is the national education parent concern group. This organization is founded by Chen Shik Chi, a lecturer of the Hong Kong Chinese University. The aim of this organization is to request the withdrawal of national education from the education curriculum in Hong Kong. Within a month, the number of members of this organization has risen to near 1500. This organization is relatively not a political one, the participants are not political leaders or activists, rather is the parents of the students in Hong Kong, with a specific target concerned group, it is easier for them to attract the members. The organization has joined several social movements related to their opposition in national education. For instance, they are one of the member organizations of the alliance of opposing national education, and helped in the 729 demonstration, later collect signs of people in different  districts for their support of anti-na tional education. As we can see that the organizations that particularly active in the anti-national education movement are neither some traditional political organizations nor some large scale organization with a wide range of membership. Yet they are only freshly established organizations with relatively small base of membership and short history. Why they were success in bringing the anti-national movement that topic-catching is the nature of the organizations and the close contact with other social networks. Internally, the unity between members will be denser and more integrated since the base of membership is small, it will be easier for the members to contact with each other and get all-round information, the scale can prevent the situation that members in the group will easily get ideological distinctions and rivalries, the internal network will then be more fragmented. Secondly, with the same goal of requesting the government to withdraw national education from the curriculum, there are many organizations from different groups joined their movement which then formed the multiple affiliations. Multiple affiliations is meaning the linkages between different organizations. This helped a lot in boosting the unfold ing of the movement, for instance, this can facilitate the personal contact and the development of informal networks which can encourage the individual participation and the mobilization of resources. Leaders of different organizations can contact each other for the sharing of information and the plan of movement, most importantly, they can get a consensus on the representations of the movement, so that will form a stronger force of opposition to their enemies. Not only for the leaders, the members from different groups can cooperate with others, for instance, the elites of groups can work together and decide a better plan for the movement. Moreover, the wider range of membership will also increase the participation of the social movement. The overlapped members, that is the members that belongs to the different groups in the affiliation, takes an essential role in circulation of information which helps a lot since the more the information the group can get, the more they can control the speed of mobilization. C. Limitation of social networks in unfolding the movement Although the small scale of the organization can bring the higher efficiency of decision making, it also has some setbacks. Since the  membership base of the organizations is quite narrow, it is hard for them to expand their group internally. The people who intended to join an organization due to three main reasons, first, they will look at the number of individuals in the organization, especially some political ones. People seems to be attracted by the political leaders in the organization so as to join it, then both Scholarism and the National education parent concern group cannot fulfill this requirement. Second requirement is the amount of previous experiences of collective action which is meaning the effort of the organizations in joining or organizing collective actions. Both social networks again are freshly established two years ago, the experiences in participating in collective actions must be relatively less than the traditional groups like the political parties. As we c an see from the two requirements, it is really hard for the two social networks to expand their scale in terms of structure and membership which are crucial in the development themselves and participation in the movements they organized.

Poisoning In The Home Environmental Sciences Essay

Poisoning In The Home Environmental Sciences Essay Unintentional or accidental poisoning is a significant global public health problem. In 2004, an estimated 346000 people died worldwide from unintentional poisoning.[1]This appears to be an important health threat as it has crucial implications of costs and potential years of life lost. There are various categories of substances that may leads to poisoning and children are usually at greater risk due to developmental incompetencies and their dependence on adults for their care and well-being.[2] According to the report from National Poison Centre(NPC) of Malaysia, a total of 929 cases of poison exposure inquiries were handled by NPC from the years 1996 to 2000. The age and gender distributions are shown in table 1 implicating children younger than 9 years old has the highest incidence of exposure to poisonous substances. As for gender, a male predominance was noted throughout the five year period.[3] C:UserscmhPicturesScreenShot159.bmp Table 1: Age and gender distributions of poisoned patients from 1996 to 2000 Some common substances involved in poisoning cases are pesticides, medicines, household products, detergents and food. From the statistics, it can be concluded that pesticides is the most common substance that leads to poisoning followed by pharmaceuticals and household products.[3] Thus, care must be taken especially at home to avoid exposure to these poisonous substances. C:UserscmhPicturesScreenShot160.bmp Table 2: Distribution of categories of substances implicated in poisonings 1996 to 2000 Throughout the years, there was an increasing trend in the number of poison exposure as shown in Figure 1. The number of poisoning cases showed an increase with an average of 611 enquiries per year. Distributions of poisoning cases are almost the same with the previous years, with the majority cases involving agrochemicals and followed by pharmaceuticals and household chemicals.[2] Figure 1: Number of poisoning cases in Malaysia from year 2001 to 2005 Pesticides There are a wide variety of tools available for pest control in residential environments, including the use of chemical pesticides as well as various non-chemical techniques. Broadly defined, a pesticide is any substance or mixture of substances intended to kill, repel, or control certain forms of plant or animal life that are considered to be pests. [4] Pests are living organisms that bother, injure, or cause damage to buildings, plants, humans, and animals, including pets. [4, 5] Pesticide is used in public health to kill vectors of disease, such as mosquitoes, and in agriculture, to kill pests that damage crops. [4] There are various way to classified pesticides for instant it can be categorized by the types of pests it control, the chemical composition of the pesticides, or by hazard of the pesticides. [5, 6] The most common method of classification would be according to the chemical composition of the pesticides itself as different pesticides may be composed of different chemical compound. The chemical category of pesticides includes organochlorine, organophosphate, carbamate, synthetic pyrethroids, inorganic, organic (botanical and microbial), and lastly the miscellaneous. [6] All of these chemical compound works in different routes in controlling pest as different chemicals may have different mechanism of action. Organochlorine (OC) Figure 2. Chemical structure of organochlorine [7] Organochlorine pesticides are hydrocarbon compounds containing multiple chlorine substitutions. There are four main types of OC pesticides; dichlorodiphenylethanes; cyclodienes; chlorinated benzenes; and cyclohexanes. All share a similar pair of carbon rings, one ring being heavily chlorinated. They are the synthetic organic pesticides that are earliest discovered and used. Their characteristics are broad-spectrum, long residual effect and relatively low toxicity. However, due to their stable chemical nature, they are hard to break down in the natural environment. Prolonged use in large quantities will easily lead to environmental pollution and accumulation in mammals, resulting in cumulative poisoning or damage.   Organochlorine pesticides are therefore banned under general circumstances and gradually replaced by other pesticides. [7] Organophosphate Figure 3. Chemical structure of organophosphate [8] Organophosphate pesticides are synthetic in origin and are normally esters, amides, or thiol derivatives of phosphoric, phosphonic, phosphorothioic, or phosphonothioic acids. They are characterised by their multiple functions and the capacity of controlling a broad spectrum of pests. Organophosphate pesticides (as well as sarin and  VX  nerve agent) irreversibly inactivate acetylcholinesterase, which is essential to nerve function in insects, humans, and many other animals.   They are nerve poisons that can be used not only as stomach poison but also as contact poison and fumigant. These pesticides are also biodegradable, cause minimum environmental pollution and slow pest resistance. Temephos and F enitrothion are examples of organophosphate pesticides. [8] Carbamate Figure 4. Chemical structure of carbamate [9] Carbamates  are  organic compounds  derived from  carbamic acid  (NH2COOH). A carbamate group, carbamate  ester, and carbamic acids are  functional groups  that are inter-related structurally and often are interconverted chemically. Carbamate esters are also called  urethanes. Carbamate pesticides work on the same principle as organophosphate pesticides by affecting the transmission of nerve signals resulting in the death of the pest by poisoning. They can be used as stomach and contact poisons as well as fumigant. Moreover, as their molecular structures are largely similar to that of natural organic substances, they can be degraded easily in a natural manner with minimum environmental pollution. Propoxur is an example of carbamate pesticides.[9] Synthetic pyrethroids Figure 5. Chemical structure of synthetic pyrethroids [10] Synthetic-pyrethroid pesticides are a pesticide synthesized by imitating the structure of natural pyrethrins, which are taken from pyrethrum, the oleoresin extract of dried chrysanthemum flowers. The insecticidal properties of pyrethrins are derived from ketoalcoholic esters of chrysanthemic acid and pyrethroic acid. They are  axonic  poisons and cause  paralysis  of an organism by keeping the  sodium channels  open in the neuronal membranes. The sodium channel is a  membrane protein  with a  hydrophilic  interior. This interior is a tiny hole which is shaped precisely to strip away the partially charged water molecules from a sodium ion and create a favorable way for sodium ions to pass through the membrane, enter the axon, and propagate an  action potential. When the toxin keeps the channels in their open state, the nerves cannot de-excite, so the organism is paralyzed. They are comparatively more stable with longer residual effects than natural pyrethrins. Sy nthetic-pyrethroid pesticides are highly toxic to insects but of only slight toxicity to mammals. A llethrin and Permethrin are examples of synthetic-pyrethroid pesticides. [10] Inorganic pesticide Inorganic pesticide refers to compounds that include heavy metals such as arsenic, copper sulfates, lead, cadmium, and mercury. They do not degrade readily and persist long in the system. Arsenic  works by coagulates proteins, form complexes with coenzymes which is then inhibits the production of ATP. Like cadmium and mercury, it can substitute for phosphorous in some biochemical processes. Mercury  has a strong affinity for sulfhydryl groups (SH) in proteins, enzymes, hemoglobin and serum albumin. The Central Nervous system is affected by damage to the blood-brain barrier; transfer of metabolites such as amino acids in the brain is not properly regulated. Cadmium  affects enzymes responsible for the reabsorption of proteins in kidney tubules. It also affects the functioning of enzymes such as ADH (alcohol dehydrogenase). Cadmium is substituted for zinc as both metals are similar in solution. Arsenic was commonly used as arsenic trioxide (As2O3) or arsenous acid and mercury as mercuric chloride (HgCl2). Inorganic pesticides were often used in powder, paste, or dip form. The pesticide residue stays on the object and continues to be an effective insect killer for a long time. [11] Organic pesticide Organic pesticides are carbon-based compounds that include pesticides such as Naphthalene and Paradichlorobenzene (PDB), two chemicals commonly known as mothballs. Naphthalene and PDB are applied as a solid (in mothball and flake form) and sublimate, acting as a fumigant. The fumes from these materials kill insects and work best in tightly closed spaces. The pesticide residue is expected to evaporate over time. Old collections often smell of these pesticides and it is not clearly understood how long it takes for the chemicals to completely sublimate in the museum environment. [12] Miscellaneous There are wide variety of commercial product of miscellaneous pesticides including 4-Aminipyridine, calcium cyanamide, creosote, endothall, metakdehyde, and sodium chlorate. 4-aminopyridine is a highly toxic white powder used as a bird repellent. It works by making one or two birds acutely ill, thus warning off the remaining birds by cries of dostress.it is toxic to vertebrates. Calcium cynamide incorporated into soil to serve as fertilizer, fungicide, and herbicides. Creosote is extensively used as a wood preservatives, usually by high-pressure impregnation of lumber.it has also been used as an animal dip and disinfectant. Endothall can act as the free acid or as sodium, potassium, or amine salts. It is used as a contact herbicide, defoliant, aquatic herbicide, and algaecide. Methaldehyde is a four-unit cyclic polymer of acetaldehyde which has long been used to kill slug and snails, which attracted to it without the use of bait. Sodium chlorate is used in agriculture as a defoliant, nonselective contact herbicide, and semi-permanent soil sterilant. [13] Pesticides Classified by Chemical Category Category Examples Organochlorines* Aldrin, chlordane, DDT Organophosphates chlorpyrifos (Dursban), diazinon, acephate (Orthene), malathion Carbamates carbaryl (Sevin), propoxur (Baygon) Synthetic pyrethroids permethrin, resmethrin, cypermethrin, cyfluthrin Inorganic boric acid, chlorates, cryolite, diatomaceous earth, silica aerogel, chromated copper arsenate (CCA) Organic (botanical) garlic, limonene, neem, nicotine, pyrethrum, rotenone, ryania, sabadilla Miscellaneous Horticultural oils, insect growth regulators, insecticidal soaps, insect pheromones Table 3. Major chemical classes of pesticides Type of Pesticide Activity Algaecides Control algae in bodies of water, including swimming pools. Antimicrobials Kill microorganisms that produce disease Attractants Attract specific pests using natural insect chemicals called pheromones that confuse the mating behavior of insects. Avicides Control pest birds. Biopesticides Naturally occurring substances with pesticidal properties. Defoliants Cause foliage to drop from a plant, typically to aid in the harvesting process. Desiccants Aid in the drying process of plants or insects, usually for laboratory purposes. Fumigants Produce vapors or gases to control air- or soilborne insects and diseases. Fungicides Destroy fungi that infect plants, animals, or people. Herbicides Control noxious weeds and other vegetation that are growing or competing with a desired species. Insect Growth Regulators (IGRs) Accelerate or retard the rate of growth of insects. Insecticides Control or eliminate insects that affect plants, animals, or people. Miticides (Acaricides) Kill mites that live on plants, livestock, and people. Molluscicides Kill snails and slugs. Nematicides Kill nematodes, which are microscopic wormlike organisms that live in the soil and cause damage to food crops. Ovicides Control insect eggs through the application of low-sulfur petroleum oils to plants and animals. Piscicides Control pest fish. Plant Growth Regulators (PGRs) Accelerate or retard the rate of growth of a plant. Predacides Control vertebrate pests. Repellents Repel pests such as mosquitoes, flies, ticks, and fleas. Rodenticides Control mice, rats, and other rodents. Table 4. Types of pesticides Pesticide Poisoning Pesticide poisoning occurs after exposure to pesticides. It may occur shortly after a single exposure (acute poisoning) or gradually after repeated exposures over a period of time (chronic poisoning).[17] Acute poisoning presents symptoms like headache, dizziness, nausea and vomiting, stomach cramps, diarrhea, blurred vision, excessive eye watering, sweating and excessive saliva. More severe case of acute poisoning may also lead to changes in heart rate, chest tightness, muscle weakness and twitching, difficulty breathing and walking, constricted pupils and incontinence. In very severe case of acute poisoning, seizures and unconsciousness may occur.[17] Chronic poisoning presents symptoms like muscle weakness, fatigue, difficulty concentrating and remember things, and generally feeling unwell.[17] The type of symptoms, how long they last and how severe they are may vary depending on factors such as the type and concentration of the pesticide used, the type and concentration of the pesticide used, the degree of exposure and the health and age of the person exposed. Many of the potential symptoms are not specific to pesticide poisoning. They may be due to other conditions, such as illness or allergy.[17] Most common pesticide poisoning: Mechanism of action/toxicity and signs and symptoms Table 5 shows most common pesticide poisoning. It is classified according to the class of chemical ingredient contained in pesticide. It also shows mechanism of action or toxicity, sign and symptoms treatment of pesticide poisoning of each class. Class Mechanism of action/toxicity Signs and symptoms Organophosphates Acephate (Orthene) Chlorphoxim (Baythion-C) Chlorpyrifos (Dursban, Lorsban) Diazinon Dimethoate (Cygon, DeFend) Ethoprop (Mocap) Fenitrothion (Sumithion) Fenthion (Baytex) Malathion (Cythion) Naled (Dibrome) Terbufos (Counter) Inhibit cholinesterase leading to excess acetylcholine CNS-anxiety, seizures, skeletal nerve-muscle junctions, autonomic ganglia-twitching, tachycardia, muscle weakness (nicotinic effects); peripheral cholinergic neuroeffector junctions- all faucets on- sweating, salivation, diarrhea, tearing (muscarinic effects); miosis (pinpoint pupils) most commonly, but 15 percent have mydriasis secondary to epinephrine release from adrenals due to nicotinic receptor stimulation. Carbamates Carbaryl (Sevin) Pirimicarb (Aphox, Rapid) Propoxur (Baygon) Timethacarb (Landrin) Other carbamates Reversible cholinesterase inhibition (carbamoyl- acetylcholinesterase [AChE] complex dissociates much more easily and quickly than OP-AChE complex) Cholinergic crisis with all faucets on; CNS depression with coma, seizures, hypotonicity in serious toxic exposures Organochlorines Chlorobenzilate Dicofol (Kelthane) Dienochlor (Pentac) Endosulfan Lindane (Kwell) Induction of hyperexcitable state in central and peripheral nervous system by disruption of normal flow of sodium and potassium across the axon membrane; may antagonize GABA- mediated inhibition in CNS. Seizures, headache, dizziness, nausea, vomiting, paresthesias, incoordination, tremor/twitching following topical treatment for lice/scabies or accidental or intentional ingestion of liquid pesticide. Pyrethrins/pyrethroids Allethrin Cyfluthrin (Baythroid) Cypermethrin (Barricade, Cymbush, Cynoff, Demon) Deltamethrin Dimethrin Fenothrin Fenvalerate Permethrin (Ambush, Dragnet, Nix, Pounce) Remethrin Pyrethrins are derived from chrysanthemums; pyrethroids are synthetic compounds with longer half-lives; both can produce toxic effects on the nervous system but are not well absorbed and are effectively and quickly detoxified by mammalian liver enzyme systems. The most severe symptoms are seizures, though highly uncommon unless highly exposed (usually through ingestion of large quantities); tremor, incoordination, salivation, vomiting; topical exposure can produce short-term paresthesias, especially of the hands and face; a small portion of the population (1 to 3 percent) is allergic to pyrethrins/pyrethroids-resulting in symptoms ranging from nasal stuffiness to asthma. Bacillus thuringiensis Variety aizawai (Agree, Mattch) Variety israelensis (Aquabac, Skeetal) Variety kurstaki (Bactur, Dipel) Wide range of products derived from several varieties of this organism; highly limited effects on mammalian systems. Mild irritative pulmonary symptoms in some involved in manufacturing process, not in mixers or appliers; theoretical risk of respiratory infection in immunocompromised individuals; single corneal ulceration reported, successfully treated with standard antibiotics; mild gastroenteritis with heavy ingestion. Repellants Diethyltoluamide- DEET (Muskol, Off!, Skeeter Beater, Skeeter Cheater, Skintastic for Kids, others) Mechanism of toxicity unknown. CNS depression followed by seizures; rare unless applied excessively under occlusion; mild skin irritating effects with repeated use; corneal and mucosal irritation; nausea and vomiting with ingestion and, rarely, hypotension, tachycardia with heavy dermal exposureà £Ã¢â€š ¬Ã¢â‚¬Å¡ Table 5: Most common pesticide poisoning: Mechanism of action/toxicity and signs and symptoms [18] Possible harm of pesticide to the environment On objects, plants or animals: Pesticides can move away from the release site when they are on or in objects or organisms that move (or are moved) offsite. Pesticides may stick to shoes or clothing, to animal fur, or to blowing dust and be transferred to other surfaces. When pesticide handlers bring home or wear home contaminated personal protective equipment, work clothing, or other items, residues can rub off on carpeting, furniture, and laundry items and onto pets and people. [19] Harmful effect on nontarget plants and animals: Nontarget organisms may be harmed by pesticides in two ways. The pesticide may cause injury by contacting the nontarget organism directly. Another way is the pesticide may leave a residue that causes later injuries. [19] Harmful effect from direct contact: Pesticides may harm nontarget organisms that are present during a pesticide application. Poorly timed applications can kill bees and other pollinators that are active in or near the target site. Pesticides may harm other wildlife, too. Read the warnings and directions on the pesticide labeling carefully to avoid harming nontarget organisms during a pesticide application. Drift from the target site may injure wildlife, livestock, pets, sensitive plants, and people. For example, drift of herbicides can damage sensitive nearby plants, including crops, forests, or ornamental plantings. Drift also can kill beneficial parasites and predators that are near the target site.[19] Harmful effects from residues: A residue is the part of a pesticide that remains in the environment for a period of time following application or a spill. Pesticides usually break down into harmless components after they are released into an environment. The breakdown time ranges from less than a day to several years. The rate of pesticide breakdown depends mostly on the chemical structure of the pesticide active ingredient. Persistent pesticides leave residues that stay in the environment without breaking down for long periods of time. These pesticides are sometimes desirable, because they provide long-term pest control and may reduce the need for repeated applications. However, some persistent pesticides that are applied to or spilled on soil, plants, lumber, and other surfaces or into water can later cause harm to sensitive plants or animals, including humans, that contact them. While using persistent pesticides, consider whether their continued presence in the environment is likely to harm plants and animals. Sometimes animals can be harmed when they feed on plants or animals that have pesticide residues on or in them. [19] Harmful effects on surfaces Sometimes surfaces are harmed by pesticides or pesticide residues. Some surfaces may become discolored by contact with certain pesticides. Other surfaces may be pitted or marked by contact with some pesticides. Some pesticides can corrode or obstruct electronic systems or metal. Sometimes a pesticide will leave a visible deposit on the treated surface.[19] Safety Measures of the Use of Pesticide Many types of pesticides are obtainable to eliminate a particular pest and a variety of pesticide formulations are available to the consumers. Thus, it is crucial to choose the correct pesticide in order to control the pest(s) in the house, garden or lawn. To select the more appropriate pesticide for the targeted pest(s), consumer should:[20] Identify the insect, weed, disease, rodent or other pest that one is attempted to control. Consider utilizing alternative nonchemical control procedures if applicable. Purchase the least toxic pesticide product which will eliminate the pest. The pesticide should be purchased in a quantity for immediate use only. Before purchasing and using the pesticide products, consumers should read the label of the product.[20] Pesticides Labels Pesticides should be packed and labeled according to World Health Organization (WHO) specifications. The label should be in English and in local language. It is a legal document which should indicate the contents, safety instructions and possible measures in the events of swallowing or contamination. Table 6 below has incorporated the information provided in the pesticide label.[21] Trade, brand, or product names The trade name is each companys unique market name for the product. Ingredient statement This statement identifies every active ingredient, the percentage by weight for each active ingredient and the percentage by weight for all inert ingredients. Use classification statement The Environmental Protection Agency (EPA) classifies every pesticide product either as Restricted Use or Unclassified/General Use. The restricted use pesticides must include a special statement. Under law, only those persons who have been certified and receive specialized training can use these types of pesticides. Generally, most pesticide products used in and around the home setting are Unclassified/General Use pesticides. Name and address of manufacturer Emergency telephone number Registration number The EPA registration number indicates that the pesticide product has been registered and thats its label has been approved by the EPA. Signal words and symbols These words and symbols provide the user with an indication of the relative acute toxicity of the product to humans and animals. The statement keep out of reach of children must also be printed on the front panel of the label. Signal words Indication On the Products Caution Slightly toxic either orally, dermally, or through inhalation or cause slight eye and skin irritation. Warning Moderately toxic either orally, dermally, or through inhalation or cause moderate eye and skin irritation. Danger Cause severe eye damage or skin irritation. Danger (with poison and the skull crossbones symbol) Highly toxic by any route of entry. Precautionary statements Statements to help applicators decide what precautions to take to protect other persons or animals who may be exposed. Statement of practical treatment First aid treatments recommended in case of a poisoning. In addition, instructions for physicians and medical personnel may be included. Environmental hazards Usually only for the restricted-use pesticides.Statements can indicate that a product is especially hazardous to wildlife and include common sense procedures to avoid contamination of the environment. Physical or chemical hazards Describes any special fire, explosion, or chemical hazards the product may pose. Restricted entry level (REI) Provides information on the duration of time must pass between the last application of a pesticide and when people can reenter a treated area. Storage and disposal General instruction for the appriopriate storage and disposal of the pesticide and its container. Directions for use Provides instructions concerning the method employed to use the product, the type of pest to be treated, the application sites and any application equipment to be usedTable 6. Pesticide Label Information [20] In Malaysia, in order to facilitate the consumers to understand the level of toxicity of the pesticide products to human beings, there is a colour band indicating the toxicity class at the bottom of the label. The Malaysian Pesticide Board has classified all the registered pesticide into four classes (colors) according to their level of toxicity to human beings. http://www.mantegroup.com/images/ControlsPesticidesClasses.gif Figure 6: Classification of Pesticide Products by the Malaysian Pesticide Board. The indication of each class ( colour bands) are as follow: Class Colour Band Toxic Level Class 1 Black band for Class 1a Red band for Class 1b ( Both with a skull and crossbones symbol) Highly poisonous. Only used by trained personnels. Class 2 Yellow band. Poisonous Class 3 Blue band. Harmful Class 4 White band Least toxic group Table 7: Indication of the toxicity of each classes of pesticide product with their respective colour bands.[19] Protective Clothing During Pesticide Application The type of protective clothing and equipment needed depends on the pesticide being used and the extent of the pest elimination plan (size of the garden or lawn). Users should refer to the personal protection equipment (PPE) on the label for selection of protective clothing and equipment.At a minimum, consumers should have the following protective items while handling pesticide:[20] Personal Protection Equipment (PPE) Proper ways of using PPE Clean clothing Long-sleeved shirt, long trousers or coveralls made of tightly woven fabric or a water-repellant material. Cotton t-shirts or tank tops, shorts and sandals are unsuitable as they do not provide adequate protection during pesticide application. Rubber gloves Unlined and without a fabric wristband. Shirtsleeves should be worn over the gloves to prevent the spills from running down inside of the glove. Waterproof boots Pants legs should be worn over the boots and not tucked inside. Waterproof hat If required. Eye protection Safety goggles should be worn if needed. Dusts mask or cartridge respirator If required. Table 8: Proper ways of using personal protection equipmentUser Image: An appriopriately clothed pesticide user. (Image taken from: http://web.extension.illinois.edu ) Safety Measures While Handling Pesticides Generally, during pesticide application, the product might possibly enter the body via oral route, inhalation or dermal exposure. For oral exposure, user may ingest the pesticide through the mouth. For inhalation exposure, user may breathe in pesticide vapours, dust or spray particles. On the other hand, pesticide may also be absorbed into skin via dermal exposure to the product. Thus, it is essential to practice safety measures while handling the products in order to lower the risk of exposure to the pesticide.[20] Mixing During mixing, fill the spray tank about half full of water before adding in the chemical. Then, measure the recommended amount of chemical accurately according to the label instructions. Finish filling the spray tank with the correct amount of water, being careful not to spill or splash the mixture. All measuring utensils such as cups and spoons, containers and application equipment should be specifically marked and kept at the same place where pesticide are stored. After each use, the utensils should be washed thoroughly.[20] Use safe practices. Do not splash. Pour with care; illustration (37 Kb PDF file) Image: Proper technique in mixing pesticides (Image taken from: www.stewardshipcommunity.com ) Application of pesticides Upon using, the discharge from the sprayer should be directed away from the body. Leaking of equipment should be repaired. Organophosphorus and carbamate compounds should not be applied for more than 5-6 hours a day and the hands should be washed after every pump charge. Users should guard against the drifts of pesticide sprays or dusts by performing the application when there is no wind as some chemicals may drift in considerable distances if the right conditions exist. Users should not eat, drink or smoke while applying pesticides.[20] Spillage of Pesticide Upon spillage, users should clean up the spill immediately by using absorbent material such as sawdust, soil in order to soak up any spillage. The spillage and contaminated waste should then be collected and put into a bag or container and to be disposed accordingly.[21] Storage and disposal of pesticides Storage of pesticides in quantity by certified applicators, wholesalers, dealers and retailers must comply with the following: All pesticides stored in quantity must be stored in securely locked well ventilated rooms, well away from all food or feed items. The pesticides should be stored in such manner as to prevent fumes from contaminating food or feed. Pesticides should be separated during storage, preferably in bins, depending upon the type of pesticide. Each type of pesticide, i.e., herbicides, insecticides, fungicides, etc., must be stored separately from each other.<

Thermodynamics :: physics thermodynamics

The word thermodynamics is derived from the Greek words therme, meaning heat and dunamis, meaning power. Thermodynamics is a branch of physics that studies the effects of changes in temperature, pressure, and volume on systems at the macroscopic scale by studying the motion of their particles. A system is the subject of study. Heat means energy in transit and dynamics relates to movement of particles; thus, in essence thermodynamics studies the movement of energy and how energy instills movement. Thermodynamics describes how systems respond to changes in their surroundings. This can be applied to a wide variety of topics in science (physics and chemistry) and engineering, such as engines, phase transitions of matter, chemical reactions, and transportation. The study of thermodynamics is separated into two branches: the classical and the statistical thermodynamics. Classical thermodynamics was the original study of thermodynamics in early 1800s. It was concerned with thermodynamic states, and properties as energy, work, and heat, and with the two laws of thermodynamics. However, classical thermodynamics lacked an atomic interpretation of the processes. Classical thermodynamics derives from the research done by physicist Robert Boyle. He developed the concept that the pressure P of a given quantity of gas varies inversely to its volume V at constant temperature. In other words this equation was derived: PV = k, a constant. From here, the thermo-science began to develop with the construction of the first successful atmospheric steam engines. The first and second laws of thermodynamics emerged simultaneously in the 1850s. With the development of atomic and molecular theories in the late 19th century, thermodynamics was given a molecular interpretation, which the classical thermodynamics lacked. This field is called statistical thermodynamics, which can be thought of as a bridge between macroscopic and microscopic properties of systems. Statistical thermodynamics is focused around the macroscopic results. The statistical approach is to derive all macroscopic properties (temperature, volume, pressure, energy, entropy, etc.) from the properties of moving particles and the interactions between them in the given system. Statistical thermodynamics was found to be very accurate and successful; therefore it is widely used by scientists around the world. Thermodynamics is a branch of physics which deals with the energy and work of a system. It was born in the 19th century as scientists were first discovering how to build and operate steam engines. The term thermodynamics was first used by James Joule to express the relationship between heat and power. The history of thermodynamics begins with a German scientist who designed and built the first vacuum pump.

Fascism in History :: Papers

Fascism in History The Age of Anxiety, the age of the lost generation, was also an age in which modern Fascism and Totalitarianism made their appearance on the historical stage. By 1939, liberal democracies in Britain, France, Scandinavia and Switzerland were realities. But elsewhere across Europe, various kinds of dictators reared their ugly heads. Dictatorship seemed to be the wave of the future. It also seemed to be the wave of the present. After all, hadn't Mussolini proclaimed that this century would be a century of the right? Of Fascism? And this is what bothered such writers as Arthur Koestler (1905-1983), Yevgeny Zamayatin (1884-1937), Aldous Huxley (1894-1963), Karel Capek (1890-1938) and George Orwell (1903-1950). It was a nightmare world in which human individuality was subsumed under the might of totalitarian collectivism. The modern totalitarian state rejected liberal values and exercised total control over the lives of its subjects. How this indeed occurred is the subject of this lecture. It goes without saying that the governments of Europe had been conservative and anti-democratic throughout their long histories. The leaders of such governments -- whether monarch or autocrat -- WERE the government, and by their very nature, prevented any incidence of social or political change that might endanger the existing social order. Of course, there have been enlightened monarchs but few of them would have been so enlightened to have removed themselves from the sinews of power. Before the 19th century these monarchs legitimized their rule by recourse to the divine right theory of kingship, an idea which itself appeared in medieval Europe. Such was the case in France until the late 18th century when French revolutionaries decided to end the Bourbon claim to the throne by divine right by cutting off the head of Louis XVI. Of course, France ended up with Napoleon who also claimed the divine right of kingship. Only this time, divine right emanated from Napoleon himself. In a country such as England, on the other hand, twenty years of civil war in the 17th century as well as the Glorious Revolution of 1688, produced a constitutional monarchy. In the 19th century, it was the dual revolution -- the Industrial and French Revolutions -- which created the forces of social change which monarchs, enlightened or not, could not fail to take heed. A large middle class had made its appearance in the 18th century but lacked status. Now, in the 19th century, this large class of entrepreneurs, factory owners, civil servants, teachers, lawyers, doctors, merchants and other professionals wanted their voices heard by their governments. They became a force which had to be reckoned with