Movie vs books Essay Example for Free

Movie vs books Essay From our mouths, to writing and finally to film, the way we tell stories has evolved over time and I must say thank God for its advancements. Reading a book can be nice but thanks to movies all the work of deciphering the message of the story is done through the director of the motion picture. He is responsible for researching the story to find the intent of the writers and will often consult with the writer to bring you the true meaning of the story. The director brings the story to life on screen with words, images, and sounds, leaving little to wonder, taking out the questions of what the story is about and leaving us with little or no debate. Examples of this can be seen in the Hollywood productions of the movies â€Å"Holes† and â€Å"The Great Gatsby†. The movie Holes (2003) was directed by Andrew Davis who used the writer of Holes, Louis Sacher as a consultant on the set during production (Movie Hole Interview October 6, 2003). The movie follows the life of a boy, Stanley, who due to a family curse, ends up in a juvenile detention center out in the middle of nowhere after being falsely accused of stealing shoes. A witch has placed a curse on Stanley’s family causing this turn of events; the curse can’t be removed until he completes certain tasks for his best friend. At the detention center he is brought together by fate with a boy named Zero who will become his best friend. Through trials and tribulations he and his friend are able to stay united, break the family curse, and get out of the juvenile detention center. Holes was one of my favorite movies growing up, and I have also read the book, I believe the movie follows the storyline of the book down to its minutest details. The movie provided all of the key factors that the book Holes was trying to convey, and in comparing the two I was almost stunned at the realization that the two were one in the same. The movie gives the reader and viewer the same theme time and time again throughout the story; friends will get you through the day, and stick to your goals. The Great Gatsby is another movie that I’m sure many people are familiar with and the story is one I myself have fallen in love with. Like holes I have also read the book that was based on the most recent Great Gatsby (2013) movie remake by director Baz Luhrmann. It is a marvelous movie that evokes a person’s passion, yet wills you to move on past lost love. In the movie we follow the narrator who takes us into the world of Gatsby, a Debonair Millionaire. From watching the movie we may conclude that everything Gatsby does throughout the story is for a woman name Daisy, whom is in love with and desires. To impress her he throws luxurious parties and to be closer to her he buys a mansion across the bay from her. Unfortunately due to his misplaced love, a love that should have been for God, he moves to corruption and swindling to attain his love, alas the only love he receives is the one who loves all, Death. Director, Baz Luhrmann tells the New York Times (May 9, 2013) â€Å"That he sticks close to the details of the story and lifts dialogue and description directly from the novels†. In doing so he is helping to provide us with a view of the story that the writer envisioned. Yet personal interpretation can be a problem within itself when comparing a movie to a book. While there is normally one message you can take away from a movie, with a book readers are able to decipher messages differently possibly coming to a conclusion the author never intended in the first place. Take the book 50 shades of Grey, which is rumored to be a movie soon, while discussing it with several women I have gotten several different interpretations of its meaning. Many saw the book as a romance novel with a main character that falls deeply in love. While some saw the main character as a scary control freak who liked to beat up his women. As for myself, I took it as a trashy love story reminding us of things we all secretly wish for, like the change to be a millionaire and to have incredible sex. So in conclusion, I can say with certainty that movies are the media in today’s society that can create a clear and concise message closely delivering what the writer had intended for its audience. While books can tell a story and allow the reader to use their imagination when determining the message of the writer we are often unsure about what message the writer was truly trying to convey when we finish the book. Movies provide us with words, sights and sounds that give us a clearer picture as to what the writer is trying to tell us. When we finish watching a movie we are left with little room for interpretation or argument and when we leave the theater we are satisfied that we have a good understanding of the writers true message was.

Ceramic Materials In Cutting Tools

Ceramic Materials In Cutting Tools Traditional cutting tools are mostly made of steels and irons, however, ceramic cutting tools are developed quickly these years. Ceramic cutting tools have a lot of advantages over other cutting tools in certain areas. Ceramics possess a lot of required properties for cutting tools such as high strength and good thermal conductivity. The development of ceramic cutting tools has once been hindered by the high cost and difficulty in manufacturing ceramics. Thanks to the improvement of materials engineering and the advent of composites, both the cost and the difficulty of manufacture have been resolved. The market share of ceramic tools has increased in recent years, which indicates that the ceramic cutting tools are well along in development. With a comparison and evaluation of many processing routes, die pressing and sintering are chosen as the most convenient and appropriate way for the manufacture of ceramic cutting tools. There are a lot of potential ceramic materials can be used in cutting tools and most of them are alumina or silica based. Composites have also attracted much attention with a relatively low cost and high performance. Cutting tools Cutting tools are designed to separate materials. They can be divided into different categories, each of which has its own characteristics and requirements for the materials used. The mostly used materials for cutting tools are steel and iron. However, with the development of materials science and engineering, ceramic cutting tools are playing a more and more important role. Ceramics are usually very hard, heat resistant and have little reactivity with steels, which are properties vital for cutting tools. Hence they can be used at high cutting speed without deformation and dissolution.[1] However, ceramics have their own drawbacks that they lack toughness and are sensitive to mechanical or thermal shock, which has limited the use of ceramic materials in cutting area. Humans have used ceramic cutting tools for more than 100 years. [2] The cutting objects vary from very soft substances (butter) to extreme hard things (steels). In the early days, the major composition of these ceramic tools was alumina. However, the toughness of alumina material then was low and softened by glassy phases, which were the reasons why their applications were limited. [1] With the effort of scientists, materials science and technology has dramatically developed so that the properties of ceramics have been greatly improved. They become harder by improving the purity, less brittle with some additives and tougher with reinforcements. [1] The first ceramic material used in cutting tools was Alumina. [1] A variety of other ceramics have also been produced to be specifically used in cutting tools manufacture. There are three categories available, namely pure oxide ceramics, mixed oxide plus carbide or nitride and silicon nitride based material. [2] Whisker reinforced ceramic materials, with high toughness and hardness at high temperature, has pushed forwarded the development of ceramic cutting tools. Figure 2.1 Cermet indexable milling tools [1] There are a lot of aspects that should be considered when the materials are chosen. The following three aspects were taken into consideration in the design of the tool material. [2] Firstly, the surface layer should possess the highest heat conductivity that is favourable for dissipation of cutting heat. Secondly, the thermal expansion coefficient of the surface layer should be the lowest of all the layers of the materials so as to form residual compressive stresses in the surface layers in the fabricating processing, which may partially counteract the stresses resulting from external loading. Finally, the value of maximum Von Mises stress should be the lowest in order to guarantee the structural integrity of the compact. [2] The properties of the ceramic are not the only factor involved in the material choice, the economic factor has also played an important role in the consideration of the material. [1] One of the main focuses in ceramic industry is how to cut the prime cost and the future developments most important direction must be cost reduction. New kind of raw materials and methods are needed to attain this goal. In the future, with the development of material science and technology, more methods will be used in improving ceramics. The perfection of coating technology and the progresses in composites will promote the usage of ceramics in cutting industry. CMCs (ceramic matrix composites) are considered to be one of the most popular materials used for cutting tools in the future. Current market situation There are three main cutting tools markets. Solid tools and indexable inserts; milling, turning and drilling tools are investigated to show the trend of current market of cutting tools. Grades include carbide, ceramic, cermet, CBN/PCBN, diamond and steel. Products are analyzed by country and end-use markets.[3] The consumer markets are specifically broken down by each of the following geographic regions: [3] à ¢Ã¢â€š ¬Ã‚ ¢ China à ¢Ã¢â€š ¬Ã‚ ¢ United States à ¢Ã¢â€š ¬Ã‚ ¢ Germany à ¢Ã¢â€š ¬Ã‚ ¢ Japan à ¢Ã¢â€š ¬Ã‚ ¢ Korea à ¢Ã¢â€š ¬Ã‚ ¢ Italy à ¢Ã¢â€š ¬Ã‚ ¢ France à ¢Ã¢â€š ¬Ã‚ ¢ Taiwan à ¢Ã¢â€š ¬Ã‚ ¢ United Kingdom à ¢Ã¢â€š ¬Ã‚ ¢ Brazil à ¢Ã¢â€š ¬Ã‚ ¢ Other EU à ¢Ã¢â€š ¬Ã‚ ¢ Other NAFTA à ¢Ã¢â€š ¬Ã‚ ¢ Other Europe à ¢Ã¢â€š ¬Ã‚ ¢ Other Asia/Pacific à ¢Ã¢â€š ¬Ã‚ ¢ Other Latin America à ¢Ã¢â€š ¬Ã‚ ¢ Rest of World The geographic regions from top to bottom represent the biggest markets for cutting tools. The United States Cutting Tool Institute which was formed when the Metal Cutting Industry and Cutting Tool Manufactures Association merged is now said to represent 80% of the domestic cutting tool market.[4] Great strides continue to be made in the cutting tool market that result in reduced bench time and additional handwork, as well as heavier depths of cutting which leads to increased productivity and higher accuracy. Over the past ten years the cutting tools market has increased dramatically. The tools have taken on very specific roles depending on the application. Now there are specific carbide grades, coatings and geometries to match the customers needs. The market is predicted to expand and grown and achieve new heights. [4] The majority of end users in industry of cutting tools are listed below: à ¢Ã¢â€š ¬Ã‚ ¢ Aerospace à ¢Ã¢â€š ¬Ã‚ ¢ Automotive à ¢Ã¢â€š ¬Ã‚ ¢ Chemical Processing à ¢Ã¢â€š ¬Ã‚ ¢ Communications à ¢Ã¢â€š ¬Ã‚ ¢ Construction à ¢Ã¢â€š ¬Ã‚ ¢ Defense/Military à ¢Ã¢â€š ¬Ã‚ ¢ Electronic à ¢Ã¢â€š ¬Ã‚ ¢ General Machining à ¢Ã¢â€š ¬Ã‚ ¢ Medical/Research à ¢Ã¢â€š ¬Ã‚ ¢ Oil Gas à ¢Ã¢â€š ¬Ã‚ ¢ Paper Pulp Industry à ¢Ã¢â€š ¬Ã‚ ¢ Power Generation Global market for cutting has been captured by the metal cutting tools for a long time. However, some special properties make the advanced ceramics tend to be more inexpensive, longer life, larger range of application, which become a competitive advantage for manufacturers.[4] Therefore ceramic cutting tools are expected to recapture the cutting market. The competition among manufacturers is expected to remain intense, which forces the manufactuers to work harder to get a smaller market share. The three largest competitors focus on carbide-tipped tools and carbide inserts worldwide. Current materials used There are four main ceramic compositions used in the cutting tool industry have been outlined below, the most important aspects of each material have been highlighted. [5] Sialons A sialon is a class of ceramic based on silicon nitride. The ceramic is composed of four different ceramic powders; silica (SiO2), alumina (Al2O3) and silicon nitride (Si3N4). The fourth component is either yittria (Y2O3) or magnesium oxide (MgO). The yittria is used to aid in the sintering process to increase efficiency of the process. [5] Sialons have very low coefficient of thermal expansion meaning that they are good in situations of thermal shock. Sialons are retain their hardness at temperatures of 800ÃÅ'Ã…   C to 1000ÃÅ'Ã…   C which enables them to be very effective when machining heat resisting alloys. They are also effective when machining hardened die steels and cast irons at high speed. [6] Aluminium oxide-based ceramics These ceramics are composed as their name suggests but are commonly found with small additions of zirconia (2-5%).the additional zirconia is added to increase fracture toughness. Al2O3 based ceramics show an increase in mechanical properties above 800ÃÅ'Ã…  C. Below this temperature the hard metals posses a greater strength than the ceramics. The hardness of the ceramic can be increased further by 30-40% with the additions of titanium carbide or titanium nitride. These harder ceramics are generally used for finishing and harder metals. Another common addition to the (Al2O3 + ZrO2) base are silicon carbide (SiC) whiskers at around 25%. The whiskers act as reinforcements to the structure and increase the toughness. This enables the ceramic to be used for cutting nickel based super alloys at high speed. [5] Silicon Nitride The ceramic has a density of around 3.2g/cm3 and the grain size is approximately 2-3 micrometres. Silicon nitride boasts good wear resistance and cutting edge strength as well as high resistance to thermal shock. Si3N4 is generally used in the field of providing a roughing grade for turning and milling cast iron. The bad solution wear properties of silicon nitride restrict the ceramic from being used as a cutting tool for machining steels. The high resistance to thermal shock means the ceramic can be used with and without the use of coolants. Money can be saved on cooling equipment in such a controlled manner. [5] Cubic Boron Nitride Cubic boron nitride is a synthetic compound, in its natural state it has a soft hexagonal crystal structure. Ton achieve a cubic structure it is heated to 1400ÃÅ'Ã…  C in 60kbar of pressure. This has a great effect on the hardness of structure, (Around 4000VDH) this is similar to diamonds hardness. [6] Carbon boron nitride is a polycrystalline and is used in applications where hard metals become limited by the cutting speeds employed. Examples are; high speed steels, tool steels, case hardened steels, chilled cast iron and satellite. Carbon boron nitrides hardness is second only to diamonds, for this reason carbon boron nitride offers great wear resistance and the ceramic will not need to be replaced on cutting tools as much as others. Harder metals are also possible to machine with more efficiency, however carbon boron nitride offers no advantage when machining softer materials. [5] Composites The properties of ceramics are dramatically improved by using some sizes, such as TiC, Co and WC, as dispersed phase, named composite ceramics. The type composite ceramics is the Si3N4 composite ceramics, which hardness, bending strength and toughness is higher than the simple Si3N4-based ceramics. It also has a better thermal impact resistance. Because of its special properties, it is widely used in machining cold hardened cast iron roller, and it can finish the work of coarse and precise machining of roughcast, for overcoming the low machining hardening of steel parts used in the mining facilities. Its disadvantage is poor abrasion machining. [6] Coating material Coating technology plays a very important role during the cutting tool manufacture. It is used to produce the perfect cutting tools which have both hard surface as well as high toughness. With the development in the last 10 years, this technology has made materials with high-speed cutting, hard cutting and dry machining possible. Cutter coating can be divided into four kinds. They are chemical vapor deposition (CVD), Low-temperature chemical vapor deposition (PCVD), Middle temperature chemical vapor deposition and PVD. However, cutting tools are expected to be coated differently to meet the demands for comprehensive mechanical properties. Therefore more attention should be paid to make coating thinner and coating temperature lower. [6] The future materials The future of ceramic cutting tools is dependent on the development of super hard coatings for the cutting tools. A new coating for a ceramic cutting tool is a titanium aluminum nitride coating. The coating helps to control the temperature of the cutting tool when it is used at high speeds. This allows for quicker cutting and therefore a more efficient process. [6] The coating also adds to the lifespan of the tool, in some cases it can make the tool last several times longer. It is important to note that the addition of the coating also adds 10% to the cost of the tool although this is immediately recovered by lasting much longer. [7] Possible processing route Most of the ceramics are processed by shaping and sintering. The shaped ceramics are called green body. The shaping process of ceramics is crucial as it can influence the properties of the sintered products such as porosity. Nowadays, the main methods of forming ceramic green bodies include die pressing, slip casting, pressure casting, and injection molding. Shaping All the methods above start with a suspension where the ceramic particles are mixed with a liquid or a polymer melt, proper dispersant, and possibly further additives such as binders, plasticizers, and antifoaming agents so that a well-dispered, nonagglomerated ceramic slurry can be made. Die pressing can be divided to many different pressing route such as dry pressing, cold isostatic pressing and hot isostatic pressing. Green bodies are manufactured by pouring powders into the die and these granules are formed under certain pressure. [8]The method of dry pressing is almost as the same as the cold isostatic pressing. The two methods are widely used in the industrial production of ceramic materials, accounting for their productivity ,and the development of cold isostatic pressing makes green bodies of higher density possible. Slip casting and pressure casting are included in the drain casting techniques, which invovle a solid-liquid separation process to form a dense green body. [8] The driven force of flow liquid in the two castings is an external pressure gradient. [8] Slip casting is a low-pressure filtration of which the driving force provided for the green bodies forming is the capillary suction.[9] slip casting is slow compared with die pressing but complex figure can be obtain. Pressure casting is usually used to fabricate the traditional clay-based ceramic materials, such as pottery and sanitary porcelain. [9] Pressure filtration is an improved method of slip casting, the casting rate is raised and the green bodies have a higher density. [9] Both die pressing and casting are plagued by some genetic problems. The liquid flow of the suspension is required and the stress gradient may also lead to nonuniform densities of the green body which lead to the pockety mass.[9] Injection molding is an excellent method to form smaller objects. The mixture of powders and binder are intruded to the mould and form green bodies. [9] However, the removal of the binder which can be burned at relative low temperature has been a problem. Crack and imperfections will be introduced during this procedure. [8] There is also a technique called solid freeform fabrication(SFF) by which we can form a ceramic green body without using a mould. All the process is controlled by computer using 3D CAD designed before the process.[10] This method have been used to form complex figures, however, the surface finish is poor. [9] This method has not been widely used for its immature technology. Sintering After shaping, the density of a green body is usually about 50% of its theoretic density. Full densification can be achieved by sintering at temperature up to 1800 °C.[11] During this process, individual powder particles can get enough energy to bond together realize the transformation from the porosity present to the compaction stages. Composites processing Composites are consisted of two parts: the matrix phase and the reinforcing phase. Generally, the combination of the two parts is achieved through a melding event. After the melding event, the part shape is set. According to the melding event, the methods of composites preparation can be classified into four main methods ¼Ã… ¡vacuum bag moulding, pressure bag moulding, autoclave moulding and resin transfer moulding (RTM).[12] Besides, there are some other types of moulding that include press moulding, pultrusion moulding, filament winding and so on. [12] Composites can also be devided into metal matrix composites(MMC) and ceramic matrix composites(CMC) based on the matrix materials. According to the temperatrue of metallic matrix during processing, the processes of MMC can be classified into five categories: [14] 1).liquid-phase processes, 2).solid-liquid processes, 3).two-phase (solid-liquid) processes, 4.) deposition techniques 5) In situ processes. The selection of materials and processing route Then dry processing has much influence on the green microstructure and production rate. We must treat this opreation to avoid the problem of cracking and warping. The desired result in ceramic part production is fast drying, but fast drying causes cracking. It has been studied that decreased drying rates results in the increasing green densities. The size of power also affects ceramics sintering properties. These days, nonasized powder attracts much attention, because of its special properties (mechanical, optical, magnetic and electrical). The compacts of nanosized powder can be sintered at significantly reduced temperatures, thereby lowing the firing cost.[10] And it is possible to get high density ceramic body in the formation of nanosized particles.[11] From the ceramics already discussed the best ceramic to use for this product would be the Aluminium oxide-based ceramic. It is already widely used in the industry so there is no need for testing to make sure it works. When cutting the cutting tools increase in heat rapidly, sometimes this has an effect however with Al2O3 their mechanical properties get better the hotter they get. The ceramics hardness will also be increased further with addition of silicon carbide whiskers. These whiskers add reinforcement to the structure and increase it toughness. Therefore the cutting tool can be used at higher speeds. Not only will our ceramic have added strength from the whiskers but with have a tough outer shell from a coating of TiAlN. This coating has a high bond strength, high hardness, abrasion resistance and high cutting speed.[8] From all of the possible processing routes in the industry, it has been decided that Dry Pressing would be the route which is most beneficial to the company. Dry Pressings most appealing feature is the productivity factor. Its fast productivity means that the product quantities are increased therefore meaning that costs will be reduced. Ben Franklin one said Time is money, he was right. Reducing production times reduces the amount of time staff needs to work, it reduces the amount of time that machines have to be on, and therefore it reduces the costs of production. Dry Pressing is conducted with granulated or spray-died powder containing 0 to 4% moisture which is where Dry Pressing gets its name from.[1] There are some disadvantages of using this process but the many disadvantages overrule this fact. One of these disadvantages is that high pressures are used in the process, but then again these high pressures are not as high as the ones used in pressure casting. Dry pressing can only gain good results if all the steps prior of the forming or pressing is kept under careful control. The product once leaved the die cavity is in a plastic condition and if not handled carefully, may deform. With dry pressing there is no limit to the compositions which can be used because the plasticity of the body is not relied on to aid the forming. Under normal conditions and supervision it is possible to produce ceramics to very good tolerances. In special cases with very close controls tolerances can be kept which are considerably better than usual. Slip casting is in need of too much careful control to be able to mass produce at a beneficial production rate, especially with the long time it takes to cast articles on the mould. Pressure casting is pretty much the same as slip casting but with added pressure to speed up the casting time. This added pressure is not justified because it is too expensive and does not take enough time off the process. Injection Molding has a few defects, which can occur to the product. There can be an incomplete fill within the mould, knit lines, and microcracking, which will all, have a visual defect on the finished body. Concluding, the dry press process has the least amount of possible defects to occur in comparison to other process routes. It is the quickest route with great productivity and can offer very high tolerances. These are the main reason for our choice of dry pressing process route. 7. Reasoned argument for RAC The ceramic that has been selected to be taken forward is Al2O3 + (2%Zr) + (20%SiC whiskers), there is no issue in using this composition legally. However the methods of using the cutting tool must be reviewed as such patent 4,879,277 which claims . In a method of cutting metal wherein a cutting tool is brought into contact with a metal workpiece and the cutting tool and metal workpiece move relative to each other whereby metal is removed by the cutting tool from the metal workpiece, the improvement comprising using a sintered composite cutting tool having a matrix consisting essentially of alumina and 2-40 volume percent silicon carbide whiskers distributed therethrough. [14] A work around the patent would have to be implemented if the material is to be used in such a way. A variation in whisker content or physical machining could help to deviate from the patents claims. RAC could create a competitive edge for themselves by proceeding with this option as it will help them to differentiate themselves to most of their competitors. The material selected is a very cutting edge material with extremely high levels of performance. Many of the competitor businesses would not have adopted this material and may continue to use a lesser and cheaper material such as unreinforced aluminium oxide based ceramics. RAC will be able to offer a faster and more efficient cutting solution to their clients. The superior technology is likely to attract new customers to the business leading to a larger market share. The harder cut edge and faster cutting speed will lead to a greater cutting quality also, the tools will be able to be smaller in size and so more precise machining is possible. The business will be able to supply their service to a wider range of clients requiring different finishing qualities. From the market analysis carried out previously it is clear that the cutting tool industry is a blooming one. It is encouraging that the market has grown so dramatically over the last ten years and that there is an increased demand for new cutting tool technologies. The need for faster and more accurate methods will remain the same as the products on the market continue to develop in complexity. To conclude the ceramic and manufacture process put forward can be projected to be a positive step for RAC after considering the factors involved. The only problem to resolve before proceeding with the decision is the patent on the ceramic and its method. Once this is resolved the decision to proceed is an easy one and should lead to business success.

An Investigation Into The Causes Of Migraine Headache Nursing Essay

An Investigation Into The Causes Of Migraine Headache Nursing Essay Migraine is a neurological disorder which affects almost 10% of the worlds population (Woeber et al., 2007). In 2003, the World Health Organization (WHO) estimated the number of migraineurs worldwide at 303 million people. A similar study in 2004 found that approximately 20 million migraine attacks occur every day (Forshaw, 2003). Individuals who suffer from migraine headaches carry the burden of pain and suffering that can lead to an impaired quality of life. At a community level, migraine headaches can also be problematic because of absences from work or decreased productivity from migraine sufferers (NINDS Migraine Information Page). As a result of the problems associated with migraine headaches, there is significant interest in discovering the triggers for migraines. A migraine is a specific type of headache characterized by altered bodily perceptions, pulsing pain in the cranial region, and nausea (Forshaw, 2003). Most migraines are unilateral, meaning they affect only one side of the head, and the pain is usually localized to a very specific area (Forshaw, 2003). A typical migraine can last anywhere from 4 to 72 hours. The most frequent symptoms of a migraine include nausea, vomiting, and increased sensitivity to sensory input (Gallagher et al., 2002). Most commonly, individuals affected by migraine headaches have increased sensitivity to light (photophobia) and sound (phonophobia) (Gallagher et al., 2002). A smaller percentage of migraine sufferers report an aura which accompanies their migraine. An aura usually consists of unusual visual, olfactory, or other sensory experiences that give the individual some forewarning that a migraine will soon occur (Gallagher et al., 2002). The diagnosis of migraine can be difficult, especially because this specific type of headache mimics several other types. Migraines are also habitually written off by those who experience them infrequently as a result of the cold or flu (Gallagher et al., 2002). Because of these difficulties, migraines are often underdiagnosed or misdiagnosed (Lyons, 2007). The International Headache Society (IHS) has laid the foundation for the diagnosis and classification of migraine headaches. According to the IHS, there are seven different classes of migraines (Headache Classification Subcommittee, 2004). These include migraine without aura, or common migraine, migraine with aura, hemiplegic migraine, childhood periodic syndromes which are precursors of migraine, retinal migraine, complications of migraine, and probably migraine. Although there are many classifications of migraine headaches, there are really only two methods of diagnosis, which correlate with the two main types of migraine: migraine without aura and migraine with aura. Migraine without aura can be diagnosed using the 5, 4, 3, 2, 1 criteria: 5 or more attacks, 4 hours to 3 days in duration, 2 or more of unilateral location, pulsating quality, moderate to severe pain, aggravation by or avoidance of routine physical activity, and 1 or more accompanying symptoms which could include nausea and/or vomiting, photophobia, or phonophobia (Headache Classification Subcommittee, 2004). In the method of diagnosing migraine with aura, only two attacks are necessary to make the diagnosis. Although migraine headaches are experienced by individuals from many different lifestyles and backgrounds, there are some demographics in which migraine is more commonly seen. Although migraine headaches are equally prevalent in male and female prepubescent patients, 75% of adult patients are women (Lay et al., 2009). Migraines become more common with age, though 98% of patients experience their first migraine before the age of 50 (Forshaw, 2003). Migraines are also thought to be genetically linked, as 70% of migraine patients have some other, first-degree relative (e.g. brother) who has experienced migraine headaches (Forshaw, 2003). Perhaps the most intriguing question pertaining to migraines is that no one knows what causes them. To date, research has not been able to definitively discern which of the suspected triggers of migraine may actually cause the headaches, nor has anyone determined which of the suspected triggers might play the largest role in producing migraines (Woeber et al., 2007). The list of suspected triggers for migraines is extensive, including, but not limited to: weather, missing a meal, stress, alcohol, various types of food and changes in sleeping patterns (Forshaw, 2003). Women have also reported menses as a trigger, and studies of both men and women have also shown that environmental factors and even certain activities, such as using a computer for too long, can bring on a migraine (Woeber et al., 2007). Because it would be impossible to investigate each and every one of these suspected triggers, the comparison of this studied has been narrowed to include sleep-related, hormonal and food triggers. Sleep Disorders (Amelia Van Handel) The role of sleep in migraine has not been fully explained (Kelman, 2005). Studies have determined that disturbed sleep patterns may trigger a migraine attack, and it is also widely accepted that sleep can alleviate and even terminate a migraine (Blau, 1982). Although the exact relationship between changes in sleep patterns and migraine is unclear, many researchers believe there is a correlation (Woeber et al., 2007; Kelman, 2005). Much of the argument for the relationship between migraine and sleep disorders stems from the preponderance of migraine in the morning hours (Fox, 1998). Patients with sleep disorders are far more prone to have morning headaches, and chronic migraine sufferers often experience morning migraines after interruptions in their sleep cycle. This has led researchers to speculate that the circadian clock plays a role in migraine pathophysiology, though no one has yet determined why changes in sleep pattern are a trigger for migraine headache (Cohen, 2005). Several sleep disorders are speculated to be triggers for migraine. Insomnia, which involves difficulty getting to sleep or staying asleep, is one of the most researched causes for sleep-related migraine (Pallesen, 2001). Excessive daytime sleepiness (EDS) is also commonly associated with migraine. EDS is defined as difficulty maintaining a desired level of wakefulness, and patients diagnosed with the disorder often experience migraine headaches after dosing off during the day (Young, 2004). EDS is relatively prevalent in the general population, ranging from 10% to 20% and increasing in the very young and very old (Hasler, 2005). EDS is usually caused by poor sleep quality at night, which can sometimes be associated with insomnia (Carskadon, 1993). To a lesser extent, narcolepsy (symptoms similar to EDS) and sleep apnea (pauses in breathing during sleep which cause an individual to wake up sporadically) have been studied to determine whether or not they might be associated with migra ine (Bixler, 2005). For more than 100 years, medical personnel and researchers alike have noticed an association between sleep problems and headaches (Sahota, 1990). One of the main causes of confusion, however, is whether the headaches are the cause or the result of disrupted sleep. While interruptions in sleep patterns can cause migraine headaches to become more prevalent, migraines can have the same affect on the sleeping disorders themselves (Paiva, 1997). The determination of which comes first, the sleep disruption or the migraine, is the subject of much current research (Woeber, 2007; Lee, 2009). Hormones (Kelly Pritzl) Previous research indicates that headaches are three times more common in adult females than adult males. (Evans et al, 2000) The reason for this staggering statistic could be due in part to differences in male and female hormones and levels of hormones. (Evans et al, 2000) The major male and female hormones are estrogens and androgens. Men produce significantly more testosterone, a type of androgen, per day than women (7 mg vs. .5 mg), while women produce more estrogen per day than men. A woman experiences more fluctuations in hormone levels during her life than a male does. During these times of fluctuation, many women will have an increased incidence of migraine, suggesting that fluctuations in hormone levels play a role in the onset of migraine. (Lee, 2009) Some of the hormones that may be involved in the onset of migraine are estrogen, progestin, androgens, testosterone, and serotonin. (Glass, 2009) The mechanisms by which these hormones are involved are not clear, but there is strong evidence for the role of hormones in precipitating migraine attack. (Glass, 2009) There is particular evidence for the role of hormones in causing migraine attacks in women. Before puberty, males and females tend to experience migraines at the same rate, there is a sharp increase in the number of girls over boys who experience migraine at the mean age that girls begin menstruating. (Dzoljic et al, 2002) Pregnancy also seems to have an effect on the occurrence of migraines. During pregnancy, there is an increased level of estrogen in the body. Many women either experience an absense of headache when they otherwise suffered from migraine on a regular basis, or they experienced an increase in frequency of headache when they typically did not have migraines. (Robbins, 2002) Another instance of the role of hormone involvement in migraine attack in women is the increase in incidence of migraine as women near menopause, a time of decreased estrogen production. (Robbins, 2002) While there are many different hormones that may have an effect on incidence of migraine, the main focus of this research will primarily be on the mechanisms by which estrogen may induce migraine, with respect to different times in a womans life estrogen levels fluctuate, such as during menstruation, pregnancy, and menopause. Estrogen is a type of steroid hormone and is considered the primary female sex hormone responsible for regulating the normal sexual and reproductive development in women. (Robbins, 2002) Organ systems such as the musculoskeletal system, the cardiovascular system, and the brain are affected by estrogen. (Robbins, 2002) There are two approaches to the current understanding of the role of estrogen in migraines. One type is estrogen withdrawal headache. This happens after a severe drop in estrogen levels in the body, such as during menstruation, during menopause, or post-partum. The second type is exogenous hormone induced headache. This occurs during or after the u se of oral contraceptives or hormone replacement therapy. (Kibler et al, 2005) A comparison of studies that examines the correlation between levels of estrogen during certain periods of a womans life and the incidence of migraine will allow better understanding of the function of this hormone as a cause of migraine. Very little is known about the way in which estrogen actually precipitates migraine, but with an enhanced understanding of the current research that has been done, future research will be promoted on a topic that affects such a considerable proportion of migraineurs. Food (Brandon Pellerin) Various foods have been suspected of triggering migraines for decades (Grant, 1979; Peatfield, 1984). In susceptible people, certain foods and particular compounds contained in these foods are believed to induce trigeminovascular (warning system to protect the brain from tissue injury and toxins) neurons to release neurotransmitters such as calcitonin, gene-related peptide and substance P. The release of these neurotransmitters leads to vasodilation (widening of blood vessels), mast cell degranulation (release of molecules from secretory vesicles called granules), increased vascular permeability (capacity of a blood vessel wall to allow the flow of small molecules), and meningeal edema (accumulation of fluid within the meninges) resulting in neurogenic inflammation (release of inflammatory mediators from neurons) (Sun-Edelstein, 2009). Many common foods such as wheat, eggs, beef, and corn are documented migraine triggers (Grant, 1979). However, the most prevalent food precipitants of migraine are alcohol, chocolate, coffee, fatty foods and artificial sweeteners (Peatfield, 1984). Various compounds present in common foods are suspected to play important roles in the triggering of migraines. Certain amines such as tyramine and phenylethylamine are thought to be precipitators of migraines and are present in alcohol and chocolate (Sun-Edelstein, 2009, Marcus, 1997). Caffeine, also present in chocolate, is believed to be the culprit of coffees capacity of being a trigger (Sun-Edelstein, 2009). Artificial sweeteners themselves such as aspartame and more recently sucralose, have been subjects of research as to their ability to precipitate migraines (Sun-Edelstein, 2009; Bigal, 2006). However, not all migraineurs exhibit sensitivity to food and those that do are not equally affected by each trigger. The food that affects one person may not be the same food that triggers migraine in another, while at the same time a third person may be affected by both. The inconsistency of results keeps food as a continued subject of debate and study in migraine precipitation. The purpose of this research was to determine the role, if any, that sleep disorders, hormones, and food play in the triggering of migraine headaches. The goal of this study was to determine if there is any validity to the conjectures that these are triggers for migraine and if so, which trigger plays the largest role in determining whether or not migraine will occur. To answer these questions, data was gathered from primary sources by searching PubMed and Biological Abstracts. From these studies, each researcher conducted his or her own analysis of the data found within a particular subtopic to determine what correlation that specific cause might have with migraine headache. The information collected in this portion of the research was then combined to determine the relative relationship between the triggers and migraine, using correlation data and p-values to determine which was the overriding cause of migraine headaches. METHODS Sleep Disorders (Amelia Van Handel) In order to find articles relating sleep disorders to migraine, the database Biological Abstracts was used. This database was chosen because Biological Abstracts includes articles from all science-based subject areas and includes many reviews and other literature forms, which proved helpful for background or supplemental information. This database was also chosen because it was a good resource for primary research sources relating to the specific subject matter. Having chosen this database, the search was initiated using keywords relating to the topic. Initially, the subtopic for this section of the research was sensory stimuli, so the search began with the keywords migraine headache* and light. The word headache was truncated so as to provide a larger base of results. This returned 31 articles, but after looking through them, it was determined that most of them were reviews. The lack of primary research led to a search other types of stimuli, common food triggers, and even specific symptoms of migraine associated with the senses. When none of these provided the intended results, it was determined that this subtopic should be changed. Leaving the idea of sensory stimuli behind completely, a search was performed using the words migraine and sleep, which yielded 38 articles. The number of articles and the quality of the source material fit the needs of the research, and thus the search was completed. With a manageable number of articles, those which were most pertinent to the subtopic of sleep disorders were chosen for further analysis. The initial 38 were narrowed by removing those articles which were not primary research. Although the reviews and other literature forms would be helpful for background information, they would not be useful in making comparisons and finding correlation. The article selection was further narrowed by looking for those articles which contained the metrics the research would focus on. With these parameters in place, only 12 articles remained, a number which was determined to be appropriate for drawing conclusions about the correlation between certain triggers and migraine. The metrics of focus chosen for this research pertained to the quality of patients sleep and the correlation this had to the number of migraines they experienced. Epworth Sleepiness Scale scores and Pittsburgh Sleep Quality Index made it possible to measure the quality of patients sleep. The association between migraine and sleep disorders was reported in the chosen articles, which aided in the determination of the relationship between sleep quality and the number of migraines experienced. Hormones (Kelly Pritzl) All of the primary research articles relating to hormones as a cause of migraines were found online through the search engines Biological Abstracts and PubMed. The same process for finding citations was used with both engines. The search strategy consisted of first examining the results when migraines was entered into the search box. This yielded far too many results; the goal was to restrict the number of articles relevant to hormones as precursors of migraines to 40 or less. In order to refine the search, the entities migraines AND hormones were entered into the search box. To further refine the search, migraines AND estrogen was entered in and results were limited to only clinical trials and articles in English only. After gathering 40 relevant research articles, five articles within these were found containing specific criteria in order to properly conduct the meta-analysis within the topic of hormones and across the three topics of sleep-induced migraines, nutrition and migraines, and hormones and migraines. The criteria for selecting the five best articles included: relevant and useful primary data, p-values, similar subjects and number of subjects, similar methods of data collection, and recentness of publication. Food (Brandon Pellerin) To find relevant articles on the subject of food triggered migraines, the electronic databases Biological Abstracts and PubMed were used. Biological Abstracts was used using a title search for the word migraine* with a secondary title search of food* or diet*. This search turned up 30 records. The asterisk is used to search for any result which contains the root word. More specific searches were done by a title search of migraine* with topic searches of chocolate*, alcohol*, caffeine*, aspartame*, or sucralose*. Similar methods were used using the PubMed database with the exception of the use of the asterisk and the differentiating of topic searches and title searches. General searches were done using migraine and diet and migraine and food. More specific searches were done using the same keywords used in biological abstracts, joined by the and limiter. The articles searched for were published in relevant scientific journals and pertained to the topic of food and its potential to precipitate migraines. Articles that were chosen contained two types of data. One set of data included the results of general surveys that were done to ascertain details of migraineurs attacks, such as various triggers. The second type of data obtained were results from studies of specific foods documented as triggers for migraine. When an article seemed to contain useful information and was able to be accessed online, it was saved as a PDF file for future reference. The data collected from the general surveys consisted of questionnaires asking for details of subjects migraines. A vast amount of information was collected in these surveys such as the type of migraine (with or without aura), associated symptoms of migraine (photophobia, nausea, etc.), frequency, duration, and so on. The information important to this study was that concerning precipitants of migraines. Each survey documented the reported triggers of each subject if a trigger existed. This information is used to ascertain the prevalence of foods as triggers within the population that suffer from migraines. The second data set used results from studies that sought to test whether suspected foods did indeed trigger migraines. The studies relied on correlating migraine occurrences with the consumption of particular foods. The studies analyzed diet and migraine diaries kept by the subjects. The diet records often required subjects to record all food consumption and the time at which it was consumed. Likewise, the migraine diaries required subjects to document the occurrence of migraines and details regarding them such as severity, duration, type, associated symptoms, etc. The studies analyzed the results by comparing the onset of migraine with the consumption of a particular food. If there was a significant increase in the amount of migraines after consumption of a particular food, it was reasonable to conclude it played a role in the triggering of the migraine. RESULTS Sleep Disorders (Amelia Van Handel) As preliminary research, the results of five studies were analyzed. These studies were interested in finding the correlation, if one existed, between sleep disorders and migraine. Four of the five articles documented research conducted by asking patients to record the quality of their sleep and the number of migraine headaches they experienced, either in diary format or by answering questions in a comprehensive questionnaire (Woeber et al., 2007; Alstadhaug et al., 2007; Barbanti et al., 2007; Peres et al., 2005). The fifth article focused on removing the stimulus i.e. sleep problems by providing targeted behavioral sleep invention (Calhoun et al., 2007). The researchers then analyzed whether or not there was an improvement in headache frequency to determine if sleeping disorders were correlated with migraine. In order to conduct research on the relationship between sleeping disorders and migraine, only patients who suffered from both conditions could be included in the studies. To determine the level of sleep disruption, two studies measured excessive daytime sleepiness (EDS) as a function of a score on the Epworth Sleepiness Scale (Barbanti et al., 2007; Peres et al., 2005). A score of 10 or higher on the Epworth Sleepiness Scale indicated EDS. The first study (Barbanti et al., 2007) found that EDS was more common in migraineurs than in controls (14% vs. 5%), and the second study (Peres et al., 2005) found EDS occurred in 85% of chronic migraine sufferers. In the same study, dozing off was a headache trigger in 30% of all patients and 70% of patients with EDS. In both studies, patients who presented with EDS had more frequent migraines (Barbanti et al., 2007; Peres et al., 2005). In the same two studies, the quality of sleep was measured using the Pittsburgh Sleep Quality Index (Barbanti et al., 2007; Peres et al., 2005). An overall score of greater than 5 separated poor sleepers from good sleepers on this scale. In both studies, about 90 percent of patients diagnosed with EDS were also categorized as poor sleepers using the Pittsburgh Sleep Quality Index (Barbanti et al., 2007; Peres et al., 2005). This provided further evidence that poor or inadequate sleep and migraine headaches often occurred in the same patients. On the subject of correlation, all of the articles chosen for analysis found a correlation between sleep disorders and migraine, though most were hesitant to state definitively that the sleeping disorders were the direct cause of the migraine. Two studies found that patients with excessive daytime sleepiness and/or insomnia experienced more migraines after a night of restless or inadequate sleep (Alstadhaug et al., 2007; Barbanti et al., 2007). These migraines were more likely to occur during the morning hours (Alstadhaug et al., 2007). Conversely, another study which focused on EDS noticed a correlation between fatigue and migraine, but they did not believe the results to be conclusive enough to state whether migraines lead to EDS or if EDS is the primary condition leading to migraine (Peres et al., 2005). One study was tracking several different sleep disorders, but found their results to be inconclusive in determining which sleep disorder was most correlated with migraine (Woeber et al., 2007). The researchers did, however, come to the conclusion that tiredness increased the risk of headache and migraine (headache ratio increased from 0.689 to 1.184 in cases where patients were tired) (Woeber et al., 2007). The final study, which attempted to remove the sleep disruptions by using behavioral sleep intervention, found a significant decrease in headache frequency and intensity after successful sleep modification (Calhoun et al., 2007). They were also able to revert chronic migraineurs to episodic migraineurs after improving the quality of sleep in their patients. By the final visit, 48.5% of those who had received behavioral sleep modification instructions had reverted to episodic migraine (Calhoun et al., 2007). Hormones (Kelly Pritzl) The purpose of the individual meta-analysis was to determine when hormones were most involved in the precipitation of migraine. Two of the studies used only females as subjects. (Dezoljic, 2002 and Kibler, 2005) The subjects in two other studies consisted of males and females with medically diagnosed cases of migraine. (Kelman, 2007 and Rasmussen, 1993) The subjects in the remaining study were self-reported male and female migraineurs (Russel, 1996) All of the studies were researching adults. The mean age of subjects for all the studies was the mid-thirties. (Dezoljic, 2002; Kelman, 2007; Kibler, 2005; Rasmussen, 1993; Russell, 1996) The methods used in all of the articles were very similar. Four of the studies conducted a clinical examination to confirm a diagnosis of migraine and were followed by a questionnaire or an interview to collect data on lifestyle of the subjects and possible causes of their migraines. One of the studies involved self report of migraine status and if the subject indicated positively, they were issued a questionnaire. (Russell, 1996) In all of the studies, incidence of migraine caused by fluctuations in hormones was overwhelmingly more prevalent in females than by males. This indicates that female sex hormones, such as estrogen, play a significant role in the onset of migraine. Food (Brandon Pellerin) Four articles were used that studied triggers of migraine in various populations (Kelman, 2007; Spierings, 2001; Takeshima, 2004; Chabriat, 1999). The studies used surveys to gather information about a population. The individuals chosen for the surveys were either random people or known migraine sufferers. In the case of the random surveying, individuals that reported having migraines were instructed to complete a detailed migraine questionnaire. Three of these studies (Kelman, 2007; Spierings, 2001; Chabriat, 1999) show evidence of food as a precipitant for migraine. Of these three studies, at least 26% of individuals documented food as being a trigger. The fourth study (Takeshima, 2004) shows little evidence of this as it reports less then 1% of surveyors listing food as a trigger. Of these four studies, two (Kelman, 2007; Spierings, 2001) listed alcohol as a separate category and reported about 40% of individuals claiming alcohol as a trigger for migraine. Alcohol, chocolate, caffeine, and artificial sweeteners are among the most often cited food triggers for migraine (Sun-Edelstein, 2009; Peatfield, 1984). The high frequency of these claims makes these subjects of particular interest. Articles were obtained that studied these particular triggers in order to ascertain whether they did indeed trigger migraine. Two case studies were found that documented the artificial sweetener sucralose as a probable precipitant of migraine (Bigal, 2006; Rajendrakumar, 2006). In the two studies, migraine attacks were documented at least 90% of the time after the individuals consumed a beverage containing the sweetener. In one study this was ascertained through correlating a food diary with the occurrences of migraine (Bigal, 2006). The other study (Rajendrakumar, 2006) relied on administering different sodas that contained and did not contain sucralose. It was found that only the sodas containing the sweetener triggered migraines.

Descriptive Essay: Grandpas Place -- Descriptive Essays, Observation

Grandpa's Place I know to take one last breath of fresh, clean air before I open the front screen door and then the faded, chipped white wood door. I walk in, and the blend of the aroma of apples and old people suffocates me. As I walk in, the same two-year old cat food is right where it has been for the last six months: in front of the front door on the cold faded tile floor. The cat disappeared four months ago, but I guess there is still hope that he will come back one day. I approach the sliding wooden door to enter the front living room and see some bird feed on the floor that must have been spilled the previous week along with a stack of news papers. This single story brick house was purchased by my Grandma and Grandpa twenty years ago. Ever since, the house has been filled with nothing but love and laughter. Behind the house, there are five or six tall, skinny trees that have died from disease but haven't fallen to the grass covered ground. Near the loose clothes line in the back yard, there are four rose bushes that need water. Dead daises and pansies from the previous summer are the main attraction in the front yard along with a five foot high metal windmill stuck in the middle of a flower garden that needs grease. The two car garage houses a huge '78 black Buick. The ol' Buick hasn't been driven in a while, but my Grandpa claims that it is still in top shape. I guess my Grandpa just keeps it around to remind him of my Grandma. Next to it is a green John Deere tractor with a ripped black seat that has a flat left rear tire, but my Grandpa claims, "It still runs like a champ." Next to it is the push lawnmower. Before I open the door, I can hear the Bronco game being televised on my Grandpa's 36"... ...the same story about so and so and how their daughter's husband's brother did this and that. All this time, I just sit there and watch my Grandpa be happy telling me this story while he slops stuff out of his mouth and onto his already stained clothes. Eventually, we finish our dinner, and I clean up the kitchen. I get all of my stuff together, make a final check that everything is good to go, and sit on a kitchen chair. My Grandpa asks sadly if it is time to go, and I say, "Yeah," with a quivering voice. So, I get up, give my Grandpa a hug and head out the door. I hate leaving this place more than anything. I hate leaving my Grandpa in that house by himself. I push open the front door and breathe in the fresh night air. As I pull out of the narrow leaf covered driveway, I look back to see my Grandpa waving at me through the dirty storm glass windows.

Brain Disorders :: essays research papers

The brain, which weighs only three pounds and is made up of eighty percent water, is the key organ of our nervous system. It is divided into three different parts: the Cerebrum, the Cerebellum, and the Medulla Oblongata. The â€Å"gray matter† of the brain is about one-eighth inch thick and it gives the brain its gray color. Inside the brain is the cortex, which is made up of billions of neurons. These neurons extend into the cerebral hemisphere and it controls all mental activity. In this report I will be discussing different disorders of the brain and how they affect the every day life of people who may have these disorders. (The Volume Library 900)   Ã‚  Ã‚  Ã‚  Ã‚  The first disorder that I will be discussing is a disease called Attention Deficit Hyperactive Disorder (A.D.H.D.). This disease has not just been recently discovered. It was first discovered in the eighteen hundreds by a British physician where the first book about Attention Deficit Hyperactive Disorder was written, â€Å"Fidgety Phil.† Up until the 1960’s it was called minimal brain function. Medication is not a new treatment either. In the 1930’s a medication called Dexedrine (d-amphetamine) or Desoxyn (methamphetamine), now known as Ritalin, was used. (Wender, M.D. 15)   Ã‚  Ã‚  Ã‚  Ã‚  This disease is present in three to ten percent of school-aged children and four to five percent in adults. A.D.H.D. is more common in boys than in girls. To determine if a child has A.D.H.D., there are not set psychological or laboratory test but the testimonies of the people who are involved in the patients’ everyday life. However there are certain criteria that can define and diagnose symptoms. In many cases medication can reduce and to an extent eliminate A.D.H.D. This is true in about seventy percent of school-aged children who have A.D.H.D. and in about sixty percent of adults who are on the medication. Another plus of the medication is that it is not addictive if it is not abused. To reduce the symptoms of A.D.H.D. in adults therapy may also be helpful. Although, the use of medication to treat A.D.H.D. can be very controversial. (Wender, M.D. 9) Some characteristics of school-aged children with A.D.H.D. are problems in school like math, reading, and spelling because twenty to thirty percent of children have learning disorders. The most common symptom is attention difficulties, distractibility, and hyperactivity. Not all patients of A.D.H.D are hyperactive, therefore a new diagnosis was identified: Attention Deficit Disorder (A.

Why did the standard of medical treatment improve so rapidly during the Twentieth century?

There are many reasons as to why the standard of medical treatment improved so rapidly during the twentieth century. But there were four main factors that triggered the diversion of medical treatment and those are war, government, technology and individuals. War played a big role in the improvement of standard of living, war was something that shouldn’t have happened due to millions of deaths but it did trigger a spark, a sudden development of treatment in order to save lives of soldiers quickly before they died. World war one and world war two are just to name a few and in world war 1 in particularly soldiers had lost a lot of blood and as a result died of blood loss. As a result of the loss of lives for this specific reason, blood transfusion was developed. There were many shell shocks where soldiers were traumatized by the event and so psychology was soon developed where doctors specialised in physiotherapy to help soldiers go through the traumas and stress of the world war. Furthermore through gun shots, many had faced terrible injuries where they lost limbs and so prosthetic limbs were developed and this resulted in soldiers being able to walk again like they previously could. World war two also came as a great shock and as this had happened later after the 1st world war there were developments in nuclear weapons and other substances that can be used against their enemy. Aeroplanes were now used to drop the nuclear bombs at opponent but in the plane itself is a different story where while in air, pilots are burnt to death due to the fuels. Many sadly die however there is a minority that survive but have burnt or damaged skin that are permanently damaged and for this plastic sugary was developed. This helped soldiers fix up their face till you could not even tell their face or body was damaged in the first place. Due to the sudden wars and demand for medical care, many realised in the process that there were no enough hospitals and so more hospitals were built for medical care. There was the government who also played a role in the development of medicine too because without the government it would have not enforced the public and therefore people would’ve done what they wanted. The government is n charge of finance and to fund medication for when medicine is prescribed from the GP to just getting normal tablets like paracetamol. But government is the one that controls the legalisation system where there make a law to have a vaccine done for example or else you would get a fine so it makes it compulsory to get the vaccine in safety for the nation. It means that everyone needs to have the vaccine. Furthermore it is the government which funded the starting of the NHS, the national health system. This was a beneficial system for every one of all ages as it made a great difference as most of what you need like medication is given for free. Previously you would also have to pay the GP however this wasn’t the case anymore and you would only need to pay for prescription which only cost a few pounds. In the case of undergoing an operation, that too would be free so it was a great help to everyone. However in order to fund the NHS, national insurance was paid from every person who’s employed where before they receive the wage, the national insurance would be subtracted from the wage. Between 1948 and 1949, ?373 million was spent on NHS, this is a quite a large figure so the government is taking in charge of a big service in welfare of the public health.

Indus valley civilizations Essay

The Indus Valley civilization is an ancient civilization that prospered along the Indus River and Ghaggar-Hakra River in present day Pakistan and India. The Indus valley civilization is sometimes called the Harappan Civilization in reference to the first excavated city called Harappa. The Indus Valley civilization was discovered in the 1920s. The existence of the Indus Civilization is only proved by excavations and maybe some Sumerian writings, e. g. The Mehulan, which is said to correspond with Indus Valley civilization. The Indus Valley Civilization extended from Balochistan to Gujarat, with an upward reach to Punjab from east of the river Jhelum to Rupar on the upper Sutlej. Coastal settlements extended from Sutkagan Dor in Western Baluchistan to Lothal in Gujarat. Besides the western states of India, the Indus Valley Civilization encompassed most of Pakistan. An Indus Valley site has been found on the Oxus River at Shortughai in northern Afghanistan, at Sutkagen dor (Western Baluchistan, Pakistan), at Mandu on the Beas River near Jammu, and at Alamgirpur on the Hindon River, only 28 km from Delhi. Indus Valley sites have been found most often on rivers, but also on lakes, the ancient sea-coast and on islands. There is no documentary evidence that the Indus civilization really existed. What is known of it is the archeological evidence. The assumption that a civilization once existed and prospered in that valley is based on what was found there at the at the excavation sites. It is a well known fact, through out history, ancient Civilizations always started along the banks of rivers or water bodies. Archeologists create theories out of their findings. Most of the artifacts found on archeological sites are explained away with out any substantial recorded facts to back their explanations. The discovery of the Indus valley civilization proves that indeed there has been some human presence around there but the question is: is the Indus valley civilization exactly what we are being told it is today? Are the facts acceptable for scholarly pursuits? It has being recorded that the Indus valley civilization had elements of urbanism such as advanced sewerage systems, dockyards, warehouses, granaries such as we have today. One could clearly conclude from these facts that a great form of civilization indeed existed which might be the basis of what we have today. The lack of authoritative and verifiable written materials on the Indus civilization makes it very difficult to study. This is because the proof of it does not exist in writing in the first place so that at least they can serve as other sources for referencing when in doubt. Good scholarly conclusions can only be drawn from authentic facts which can be proven over time and this is not a very strong point of the Indus civilization.