A Study Of Nanofiber Technology Environmental Sciences Essay

The common acknowledgment to nanotechnology is â€Å" engineering to bring forth something with the characteristic by commanding the atom and molecule in the graduated table from 1nm to 100nm to alter the construction and agreement of the substance. Therefore, Nanofibers are define as fibre with diameter more than 100nm. Nanofibers are produced by Electrospinning and interfacial polymerisation. The most frequent stuff with nanofiber morphology are Ti dioxideA ( TiO2 ) , A Si dioxideA ( SiO2 ) , Zr dioxide ( ZrO2 ) , A aluminium oxideA ( Al2O3 ) , A Li titanate ( Li4Ti5O12 ) , A Ti nitrideA ( TiN ) orA platinumA ( Pt ) . Electrospinning is a procedure uses an electrical charge to pull really all right fibres from a liquid. Electrospinning portions the feature of both electrospraying and conventional solution dry spinning of fibres. The advantages is that Electrospinning procedure does n't necessitate the usage of curdling chemical science or high temperature to bring forth. Therefore the procedure is suited for production of fibres utilizing big and complex molecules. Nanofiber can be used in many Fieldss such as filtration, such as HVAC system filters, HEPA, ULPA High efficient filters, Air, oil, fuel filters for automotive, Filters for drink, pharmaceutics and medical applications. Furthermore, nanofiber can utilize in making fabric for fabric. For illustration, athletics dresss, athletics places, outerwear and many more. hypertext transfer protocol: //www.nanotech-now.com/images/nanofiber-large.jpg Nanofiber in high efficiency filtration application Nanofibers presents had been introduced into a new degree of public presentation that is is the air filtration. Due to the feature of nanofiber holding the thickness equal to merely several nanofiber diameters and was laid on a hempen substrate that to boot serves as a safety filter. The tenuity of the nanofiber bed coupled with fiber denseness considerable increase the fractional efficiency of the filter media with no important negative impact on permeableness to air flow. These type of constellation met the demand to bring forth high efficiency filtration. Common advantages of nanofibers in air filtration There are two primary map for polymeric nanofiber webs usage in filtration application. The advantage of nanofiber in air filtration is that it heighten the efficiency of the base stuff, making a composite media with good handling belongingss and good efficiency for many industrial and engine-related application. Furthermore, nanofiber is more thin in comparing with other method that is through the application of charged meltdown fibre. The 2nd advantage is that, polymeric nanofibre webs improve the surface lading behaviour of typical filtration stuff. When the filtration is utilizing other method, when clip base on balls, the peculiar affair become profoundly embedded in the hempen construction, finally it will forestall the air flow. But when polymeric nanofiber web is applied to the upstream side of the filter medium, the particulate affair is caught at the surface of the nanofiber web. The grounds why nanofiber web is better is because that the surface lading behavior allows the filter to be cleanable through standard mechanism like back forcing or agitating. Solidity and nanofibers in air filtration In nanometer scope of nanofiber, the consequence of faux pas flow at the fibre surface has to be taken into accouint. Due to the faux pas at the fibre surface, the draw force on a fiber is smaller than in the instance of non-slip flow which turn into lower force per unit area bead. In the other manus, the faux pas flow makes the part of the air fluxing near the fibre surface larger than that in the instance of non-slip flow, which translates into more atoms going near the fibre. This cause in higher diffusion interception and inertial impaction efficenceies. The function of solidness is complicate, as it affects both force per unit area bead and efficiency in the same way. When solidness addition, drag per unit length of fibre besides addition. Diffusion and interception is taken into history for high efficiency as they are the dominant mechanisms near the most acute atom size. We can state that, withing the locality of the most acute atom size, the figure of MERIT below show that decreased with increased of solidness The figure of MERIT show that different solidnesss for nanofibre media at 10.5fpm Dust Collector Applications Recently, dust aggregator had been introduce to the nanofiber engineering to pin down more dust on the surface of the filter than the conventional trade good types of filter media such as depth-loading cellulose, polyester or cellulose/polyester blend The procedure of the dust aggregator can be describe on the figure below The dust aggregator cartridge filter play the of import function of the filtration. There are may type of cartridge available. There are Ultra-Web merchandise from the Donaldson where it supply alone filtration efficiency. The advanced surface filtration engineering ensures longest life and lowest operation force per unit area bead in scope of cartridges. It is a high public presentation option to commodity-type pleated cellulose or cellulose/synthetic blended media that captures submicron dust atoms on the surface of the media. Nanofiber is a cellulose/synthetic composite media that forms a web-like cyberspace of really all right fibres 0.2 to 0.3 micrometers in diameter. Cellulose and intermix media have fibres at least 10 micrometer in diameter and big pores between fibres ( up to 60 micrometer ) that allow dust to perforate deep into the media, rapidly stop uping and cut downing filter life. Decision Although there are differing sentiments among the experts on the topic sing the planetary supply of oil, even the most optimistic of them predict that the planetary production of conventional oil is likely to top out sometime between 2010 and 2020 [ 10 ] . If we are to be prepared for this inevitableness we must speed up our acceptance of alternate fuels so we are at least prepared to run into the challenge when it arises. With its ubiquitousness in the existence and on our planet and its possible as one of the cleanest and most efficient fuel beginnings available to us, H is the obvious pick as our following basic beginning of energy, and the fuel cell is the obvious replacing for the internal burning engine. In order to show in this new epoch of energy, many obstructions must be overcome and many new technological progresss must be developed into feasible solutions. One such application that has been demonstrated to hold immense potency in this way is that of C nanofibers as a H storage medium for fuel cells, peculiarly in the transit sector. There is still a long manner to travel and much work to be done, but in this writer ‘s sentiment it is clip to get down the undertaking of turning the positive consequences born of research into the feasible solutions born of technology. Beside that, nanofiber engineering besides contribute in the air filtration. The importance of this is because filtration can do the air cleaner prevent the air from polluted. The nanofiber with the characteristic with the diameter that are less than 1000nm successfully barricade the particulate affair on the surface of the nanofiber web. It believes that, with the farther researching on nanofiber, many advantages and use will be discovered in the hereafter. Hydrogen Storage Medium for Fuel Cell with Carbon Nanofibers in Transportation Sector Introduction to the H as fuel cell: Nowadays, as the planetary issues has become a serious fact to human being, as high outlook to a renewable, environment-friendly and carbon-zero emanation energy beginnings, H have became the best future new energy beginning. The benefit of utilizing the H: Illimitable measures as H2O screen more than 70 % of the Earth The burning of H merely produces H2O and heat as byproduct Therefore H is really suited to be used for vehicle power beginning. Although H can be generated on-board a vehicle by reforming methyl alcohol or other type of hydro-carbons, but a better manner, that is store pure H on-board the vehicle without any reformation procedure required. The challenge of utilizing H fuel cell in automotive application: The H storage system should be safe The H storage system should be light and do non act upon the efficiency of the system by its weight. There are several methods to hive away the H: Compressed H gas Liquid H Gas-on-solid physical surface assimilation We can explicate the efficiency by wt % , which mean the ratio of stored H weight to the entire storage system weight of a vehicle. The compress H method: Disadvantage in safety due to the involved of force per unit area to compact the H. Suffer to the permeableness and embrittlement ( doing it brickle ) of the metal armored combat vehicle due to high force per unit area. These method merely can accomplish 2wt % with conventional storage armored combat vehicle and 5wt % utilizing expensive C fiber-wrapped polymer armored combat vehicles. Liquid H Safer to compact storage system due to low force per unit area demand Disadvantages in possible loss through vaporization Require energy and insularity to maintain the H in liquid province Merely achieve 3wt % . Gas-on-solid surface assimilation Investigated with C nanostructures ( C nanofibers ) A procedure which a gaseous substance condenses on the free surfaces of a solid The procedure merely affect weak molecular force ( Eg: Van der Waals force ) , the input energy is minimized. Gas-on-solid surface assimilation can accomplish upwards of 15wt % and more. How the Fuels Cells Function? The cell consists of an anode and cathode, and electrolyte in between to let positive ions to go through through. The H fuel is fed to anode and the atmospheric O is fed to the cathode. When activated by accelerator ( Pt on the cathode ) , the H atom separate into negatron and protons. The negatrons take a way through an electrical circuit and burden, while the protons take a way through the electrolyte. When the negatrons and protons run into once more at the cathode, they recombine along with the O atoms to bring forth H2O and heat. This procedure required changeless supply of H and hence, the H should hive away in a safe and efficiency manner. Carbon Nanofibers Carbon nanofibers consist of spiral like fibres made up of really little graphite sheets that are stacked in specific constellations and separated by distances of 0.335 – 0.342 nanometer. Hydrogen has a kinetic diameter of 0.289 nanometers, which is somewhat smaller than the 0.335 – 0.342 nm interlayer spacing in C nanofibers. To fix the C nanofibers for H surface assimilation, C nanofibers are placed in a vas and exposed to hydrogen under force per unit areas of 120-130 standard pressure at room temperature, the H slips between the graphite sheets of the C nanofibers and adsorbs to surface of the C beds. During the procedure, drosss metal and chemisorbed gases are carefully removed. The diagram above represent the H adsorbing between the graphite sheets of C nanofiber. A H lattice parametric quantity of 0.35 nanometer has been observed following the broadening of the interlayer spacing of the C nanofibers and formation of subsequent beds of H. Since this measuring is smaller than the mensural majority hexagonal stopping point jammed lattice parametric quantity of 0.376 nanometers for H, it has been proposed that the unique construction of the C nanofibers suppresses the mobility of the H and causes it to follow an remarkably extremely jammed province, which does much to explicate the high storage degrees that have been systematically measured. Upon controlled release of the force per unit area, the H desorbs from the C nanofibers and is released as molecular H gas. While the rate of surface assimilation is comparatively slow, on the order of hours, adequately fast desorption rates of ~57 mlA?/min have been reproducibly demonstrated. Analysis of the discharged gas indicates that H is so the lone constituent nowadays and therefore that there are no inauspicious reactions happening between the C nanofibers or any drosss and the H throughout the procedure. It should be noted that in finding the adsorptive capacity of the nanofibers it was discovered that non all of the adsorbed H is released in the desorption procedure at room temperature under atmospheric conditions. This fraction of strongly held H that is retained has been attributed to a comparatively little sum of chemosorption occurring, and has been confirmed through high temperature experiments on dismissed C nanofibers utilizing N and a thermic conduction sensor. The C Nanofiber Hydrogen Fuel Tank The principle application of a C nanofiber H storage medium is in a fuel armored combat vehicle for an incorporate on-board fuel cell system with a polymer electrolyte membrane ( PEM ) fuel cell stack at its nucleus and a H supply stored as adsorbed H in a pressurized armored combat vehicle incorporating C nanofibers. The PEM fuel cell is ideal for automotive applications because it operates at comparatively low temperatures and can change its end product to run into changing power demands. In this system, the H storage armored combat vehicle consists of a steel or composite armored combat vehicle or case shot filled with vapor adult C nanofibers with adsorbed H nowadays. The fresh armored combat vehicle is kept pressurized at about 100-120 standard pressure to keep the adsorbed province of the H. The armored combat vehicle is connected to the fuel cell via a regulated force per unit area nose assembly controlled by the onboard computing machine that monitors the system. As the fuel cell demands hydrogen through the normal operation of the vehicle, the force per unit area in the fuel armored combat vehicle is decreased and gaseous H is released through the nose assembly and directed to the fuel cell cathode for contact action and subsequent current coevals. The rate of release is variable harmonizing to energy demands and can change from zero to the maximal desorption rate available from the C nanofibers via incremental depressurize. Based on these computations ensuing in peculiarly light fuel armored combat vehicles full of H adsorbed on C nanofibers, and the fact that the surface assimilation procedure is much slower than the desorption procedure, it is suggested that the construct of replenishing the vehicle at a service. In this mode, the long surface assimilation times are relegated to the provider of the fuel and non to the consumer. Additionally, any wear or dislocation of the C nanofibers that may happen can be monitored and those units that have deteriorated beyond utility can be recycled. Decision Although there are differing sentiments among the experts on the topic sing the planetary supply of oil, even the most optimistic of them predict that the planetary production of conventional oil is likely to top out sometime between 2010 and 2020 [ 10 ] . If we are to be prepared for this inevitableness we must speed up our acceptance of alternate fuels so we are at least prepared to run into the challenge when it arises. With its ubiquitousness in the existence and on our planet and its possible as one of the cleanest and most efficient fuel beginnings available to us, H is the obvious pick as our following basic beginning of energy, and the fuel cell is the obvious replacing for the internal burning engine. In order to show in this new epoch of energy, many obstructions must be overcome and many new technological progresss must be developed into feasible solutions. One such application that has been demonstrated to hold immense potency in this way is that of C nanofibers as a H storage medium for fuel cells, peculiarly in the transit sector. There is still a long manner to travel and much work to be done, but in this writer ‘s sentiment it is clip to get down the undertaking of turning the positive consequences born of research into the feasible solutions born of technology.

Is Killing Ever Justified Essay

No I don’t think killing for any reason is ever justified be it as revenge against someone or just because you want to hurt another person. In the book ‘Kill the Possum’ I think the author is demonstrating to the readers that everyone needs to be responsible for their actions and aware of the consequences of the effects of their actions on others. Also the lies people will say when they want to protect what is close to them. As Dylan became friends with this family, Tim and Kirsty, he became drawn into and witnessed all the bad situations the family was dealing with and felt he had to rescue them from this life. This led to Dylan premeditating murder with Tim which in the end backfired and left When we hear about these events in the news and as the trial unravels you hear of the tragic events which lead to the murder of all too often innocent victims and it most instances there is a family feud , abuse and violence involved. There are lots of arguments to say when killing is justified as in the case of a war. In World War II the Nazi’s attempting to kill all the Jews in the world was definitely not justified, but on the other hand the Allies killing was justified because they were trying to keep the Germans from taking over the world and because of this we live in the world we live today. There are instances when some people do not have any other choice as in abortion. A young girl has got herself into trouble and become pregnant unfortunately she is only 15 years old and her parents make her have an abortion, she has no say in this matter the decision is made for her. Is this fair should her parents make the decision for her? In conclusion each of the above needs to be justified on their own merits. Killing someone as punishment for what they have done to you is not always right but, of these justified I guess each has to be assessed on its own merits but deep down I believe that life is very precious and should not be taken away from anyone not matter what they have or have not d one.

Anthropology kinship Essay Example | Topics and Well Written Essays - 2000 words

Anthropology kinship - Essay Example The topic is about the kinship and bonds formed between foreign students of the same ethnicity or background that met at university in the united states. I wanted to talk about how foreign students from the same country or ethnicity have the tendency to immediately form their own group of people due to ethnicity and kinship.Culture and Classification. One of the goals of social anthropology is to acquire gain an understanding of how and why human beings interact with each other and with their environment. And Kinship is what deals with interaction oh humans with each other. One important idea that contributes to this understanding of kinship is what anthropologists term as culture. One of the many ways that anthropologists use culture is to refer to systems of shared ideas among a group of people.By system we mean that there is some similarity or regularity to the way that ideas, and concepts are shared. There are various possible ways this sharing could happen.The same language, spi rituality or religious belief can be a system that connects two minds. KINSHIP The study of kinship is the greatest common denominator across the various parts of social anthropology. Kinship was one of the first fields where anthropologists discovered social structure and logical patterns The unparalleled pioneer in the field of kinship studies was the 19th century American anthropologist, Lewis Henry Morgan; later, French structuralists and British structural functionalist carried on the tradition. Kinship brought about opportunities to map cultural variation within a relatively well-bounded empirical field, and hence, it was a perfect point for making comparative conclusions. In societies which are egalitarian, kinship often works as a kind of universal institution, which organizes everything from economy to religion. Before embarking upon a discussion on "why kinship and bonds are formed between foreign students of the same ethnicity or background that met at university in the United States. " , lets revise the definitions of ethnic group, ethnicity, nationalism. Ethnicity "Ethnicity seems to be a new term", state Nathan Glazer and Daniel Moynihan (1975: 1).Both of them also pointed to the fact that the term appeared in dictionary for the first time in 1972 in Oxford English Dictionary. In 1953,American sociologist David Riesman,first used this word. The word "ethnic" is much older. Derived from the Greek ethnos (which in turn derived from the word ethnikos), "ethnic" which originally meant heathen or pagan (R. Williams, 1976: 119). But from mid 19th century, it gradually began to be associated with "racial" characteristics. It was around Second World War, that the United States started using the word as a polite term to refer to Jews Italians, Irish and other people considered inferior to the dominant group of largely British descent. While, in everyday language, "ethnicity" carries a meaning of " minority issues" and "race relations", but in social anthropology, "ethnicity"means aspects of relationships between groups which consider themselves, and are regarded by others, as being culturally distinctive. While,it is true that "the discourse concerning ethnicity tends to concern itself with subnational units, or minorities of some kind or another" (Chapman et al., 1989: 17),majorities are no less"ethnic " than minorities. In the United States, "ethnics" came to be used around the Second World War as a polite term referring to Jews, Italians, Irish and other people considered inferior to the dominant group of largely British descent. None of the founding fathers of sociology and social anthropology - with the partial exception of Max Weber - granted ethnicity much attention. WHY FOREIGN STUDENTS AT UNIVERSITY IN AMERICA MINGLE Ethnic groups tend to possess myths of common origin, and they nearly always have ideologies promoting endogamy(marrying within the same social group,

Supply Chain Management College Case Study Example | Topics and Well Written Essays - 500 words

Supply Chain Management College - Case Study Example This creates a bottle neck, which is translated in its inability to supply the eight-pack in the market. This creates a substantial loss in consumer sales which could have uplifted the numbers for the sales and marketing department. The inability to run in full capacity leaves some of its products unmanufactured. This can be seen as an opportunity cost for the company. Supply chain is indeed "one of the major areas for companies to gain a competitive edge" and operations is the first step (Lee, 2002). Efficient operations management allows the company to cut on costs through efficient labor and capital use and presents desirable products to the marketing people. The Seven Principles of Supply Chain Management suggests that to "develop a supply chain-wide technology strategy that supports multiple levels of decision making and gives a clear view of the flow of products, services, and information" (David L. Anderson, 1997). The system prepares the company in the short-term, the midterm and the long-term operations. For the daily transaction, this technology will be used to align the "supply" to the "demand" through "sharing of information on orders and daily scheduling" (David L. Anderson, 1997).

The Single European Market Essay Example | Topics and Well Written Essays - 750 words

The Single European Market - Essay Example The Single European Market While it can be argued that the single market was basically completed in 1992 following the enactment of various policies in place, much of the project is yet to be completed. Indeed, with the present challenges realized in the process, it is becoming more impossible to complete the Single European Market (Crouch, 2010). Efforts to realize the European single market continue to face a lot of challenges. Language barriers amongst the member countries continue to present a lot of challenges to the realization of a single unified market. Moreover, it is realized that different countries in Europe have varying levels of economic development and this presents a challenge to a single market creation. In this regard, different countries have different economic objectives hence the realization of a single market might not really become practical and unacceptable to all the member countries. The member countries of the EU are always in economic competition against each other. In this regard, these countries are at times forced to follow their own national visions and interests which totally go against the spirit of the realization of a single market. The national interests of the countries appear to be more important than the good of the EU. The directives of the EU toward the achievement of the single market are often interpreted to be blatant instructions on what should be done. As such, countries such as Britain have always ignored much of these instructions and adopted their own versions of economic development. For instance, it is much difficult for British companies to effectively compete with other companies from countries with lesser demands. The differences in populations have a lot of implications on the supply and demand for various goods and services in the region. A single market in this regard would put some companies at a disadvantage against others. Many of the EU’s member countries have sought various derogations from some aspects of the single m arket or restricted many of the reforms proposed. Moreover, the different consumption and stake in the oil industry affects the operations of the single market. In this regard, France with its huge stake in the oil industry has led to the removal of energy from the products in the European single market. While most of the member states of the EU follow different educational and professional standards, the mutual recognition of these qualifications in the region is always a challenge since some countries regard their standards as far much better than others. The operations and success of a single market requires a uniform sense of both monetary and fiscal policies across the region. In this regard, the adoption of a single currency was certainly a good direction towards this realization. However, given that some countries like the UK have not yet adopted the single currency, pure economic integration of the region becomes a great challenge. Such integration is certainly a prerequisit e toward the realization of a Single European Market. Of great challenge to the European single market is the enlargement of the EU. With a membership of 27 states, the region might face a lot of migration of workers from the poorest countries in Europe to some of the richest countries (Vickerman, 2002). In this regard, it was seen that such migrations would drastically affect the wage rates

Case study paper on - death penalty both pro and anti capital Essay

Case study paper on - death penalty both pro and anti capital punishment - Essay Example On the other hand, the article written by Hugo Bedau argues that death penalty is a lawful killing, and since it is a form of killing the law should rise above it and condemn it. He says that death penalty is an immoral act in an indecent form of action by the law, and the fact is that it is a dignified form of killing executed and polished by the law. I feel that both the articles make a very valid point, and it is upto the people and the law to decide what is right and wrong. However, keeping everything in mind, death penalty should be slowly taken away from the law and society as we move towards a more liberal and morally committed world. The first article is written in an extremist/radical style, while the other one is written in a liberal/radical style. Both the articles maintain a valid point of law, however, it is pertinent to note that death penalty should be tried to be done away with slowly, and not immediately. IN this context both the articles explain an important perspec tive, the perspective of doing away with death penalty but with slow time. Death penalty is not morally wrong. I am sure ernest van den hag would have reacted hard on this thought. Just as imprisonment is not considered morally wrong as a lawful kidnapping, or fine is not considered to be morally wrong as a lawful robbery, I don’t think that people should consider death penalty as morally wrong as a lawful murder. It is an example, which is set to the people and has been a very successful form of deterrence over the last many centuries. In many ways death penalty has acted as deterrence better than imprisonment, but as the society moves forwards, we need to realize that this form of punishment will not yield the same results again. Death Penalty as a form of deterrence will slowly fade away, as life imprisonment takes over. In answer to the second last question, both the arguments make sense either ways. However, lets try to move forwards and be more pragmatic. It is true tha t there is no going back once the death penalty has been executed. And therefore the point is that to be careful while executing the death penalty. This is because there are many criminals even today who deserve this penalty. One cannot do away with this form of punishment mainly because there exists an apprehension that innocent will get killed. What about the fact that there is being a miscarriage of justice? Even that is an apprehension, and therefore we need to sideline both the apprehensions and think from a logical and practical perspective. And that perspective teaches us that the execution of death penalty should be allowed, albeit with caution. The final question consists of Bedau contemplating that it is immoral and indecent to award death penalty in response to crimes such as rape and kidnapping. Crimes such as rape and kidnapping in them mind of Bedau is not that extreme or indecent to attract the award of death penalty. It is pertinent to understand that death penalty s hould only be awarded for the ‘rarest of the rarest’ crimes, and not for some petty crimes like kidnapping. Agreed, rape is a very severe crime which attracts a very severe punishment, but killing the rapist for such an act would be encroaching upon the boundaries of morality and responsibility. The correct punishment for rape would be to award life imprisonment, which is still la very harsh punishment, as deserved by the rapist, but not on the extreme

(Context) large international contracting company from a country where Essay

(Context) large international contracting company from a country where there was little or no recession trying to enter the European market - Essay Example Their objective is to tap into UK’s know-how in the industry so as to improve on their competitiveness. This follows its reputation for technology in construction services, including technological advancement, such as the Building Information Modelling, BIM and architectural endowment (BIS 2013). Further to this, the number of graduates in the construction industry keeps growing, an indication of greater opportunities for growth in the future. However, the UK still grapples with trade deficit in the construction industry. BIS (2013) observe that in 2012, it had a trade deficit amounting to about  £6.2 billion. It has been noted that a small portion of UK construction contractors are exporters as compared to the other sectors of the economy. Specifically, the 2012 statistics show that only about 6% of construction SMEs engaged in export trade. It was observed that a majority of these constructors lacked the knowledge of exports in construction, thus the trade deficit. Moreover, UK contractors still face the challenge of having to deal with financial institutions which still perceive the construction industry as risky. This hinders them from accessing the requisite financial services. Therefore, the UK is well placed to benefit from the myriad opportunities it has in the construction industry but has to input greater effort to curb its challenges. Department for Business and Innovation Skills 2013, UK construction: an economic analysis of the sector, viewed 22 March 204,

Literature Review Essay Example | Topics and Well Written Essays - 500 words - 1

Literature Review - Essay Example Kennedy (2008) however argues that the overall interests of the transsexual children are ignored by both the schools as well as the families besides department of children is also paying attention to them. (KENNEDY). This argument is therefore in conformity with the arguments of Dewey who claim that transsexual children internalize different environments on their own and plan their strategies in a manner that allow them to comply with the changing conditions besides allowing them to deal with their future medical conditions. The synthesis of both of these articles therefore would suggest that though the transsexual children are ignored by their families, schools and even the department of children, however, they have the capability to develop their own internal images of how to deal with the different difficult and easier situations. This development therefore contributes towards the achievement of their necessary survival within the society. Menvielle (2009) also argues on the role of families in helping their children to learn to cope with the reality of transsexuality and whether a child is helped to make a transition to genders from the stage of puberty is discussed. (Menvielle). Menwielle however provides a description of how families can be taught and trained to deal with the challenging situation of dealing with their children and helping them to make a transition. This argument therefore inherently points out towards the fact that existing family system and values may be insufficient in providing deliberate support to such children to face the difficult situations in life and make successful transitiona and go through various developmental stages easily. What is significant however, about the arguments of all three arguments is the fact that Kenney provides evidence regarding the role of schools and families in helping their children to better cope with the reality. Menvielle therefore provides further evidence as to how the

Higher Incidence of Diabetes Among the American Indians and Alaskan Essay

Higher Incidence of Diabetes Among the American Indians and Alaskan Natives - Essay Example Although the exact cause of this finding may vary from one case to another, it appears that genetic differences and racial or ethnic differences play a major role in this regard. Diabetes is affecting the lives of certain groups of the American population in a disproportionate manner and is, therefore, resulting in a number of health-related, social and financial problems; not only for the individuals suffering from the disease but also for those who are directly or indirectly involved with the patients. Diabetes is relatively more common among the American Indians and Alaskan Natives (Joslin and Kahn 514). The exact cause of why this disease affects these populations disproportionately is as yet unknown. With the passage of time, this disease is becoming more and more common among the people of young age belonging to these races and ethnicities. The prevalence of the diabetic disease is three times higher in American Indians and Alaskan Natives as compared to other American adults of similar ages. It is therefore essential to take corrective actions regarding prevention of diabetes in this population. As compared to other minorities, American Indian and Alaskan natives are extremely small in number and the term is used to refer to individuals having origins in the original people of South America and other people of the North that maintain tribal affiliation. The largest population of American Indians and Alaskan natives resides in California, Oklahoma, Arizona, Texas, New Mexico, New York, North Carolina, Washington, Alaska, and Michigan. Alaskan villages harbor the majority of Alaskan natives (Shinagawa & Jang 98).