Supercapacitors applications , environmental issues and safety Essay

Supercapacitors applications , environmental issues and safety - Essay Example It is also ecofriendly as opposed to the two. Super capacitors are therefore increasingly becoming more probable solutions over both of them in some occasions INTRODUCTION The demand for environmentally friendly energy is ever growing in this globe of rapidly advancing technology. This is mostly so in the developed nations and more so in the scientific frontier. This has led to the technology of capacitors being refined with the aim of storing more energy in devices so that the lesser environmentally friendly storage products like batteries are facing out. This progress has led to the birth of major adorable devices. Electric double layer capacitor, better known as a super capacitor, is one such device. Super capacitors are also by many other names for instance ultra-capacitors and electric double layer capacitors. Super capacitors are capacitors with high capacitance of greater value compared to the capacitors currently available in the market. It exhibits values of up to close to 4 00 F in a standard size of a single capacitor. This is achieved through utilization of high surface area electrode materials coupled alongside very thin electrolytic dielectrics. Its first appearance is dated back to close to 2004. Its first application was in 2005 where it was first used in robots and later in Airbuses. Its technology registered within this period was so rapid that is application and market grew so fast. This paper reviews the applications of super capacitors and environmental impact of super capacitors. Super capacitors and the environment Toxicity Super capacitors have no heavy metals in its composing components. This is a big relief when is compared to the batteries which also serve the same purpose as this type of capacitor. Lead batteries have metals like lead making their exposure to the environment hazardous given the toxicity of lead. Some super capacitors use a liquid salt to act as its electrolyte. This liquid is environmentally friendly. On top of that, they have the capability to use electrolytes in the blood further displaying their capability of using common place materials that have totally no harm on the environment. It is approximated that most super capacitors use coconut shells as powdered activated carbon. This is a very environmentally friendly activated carbon with no environmental threat at all. Even when heated or exploded, the emissions are harmless as they majorly contain water contained in the electrolyte. Recycle ability By virtue of being rechargeable, the super capacitors reduces the amount of waste being churned out to the environment however biodegradable. This in turn reduces the environmental pollution. During its entire lifetime of charging and recharging there are no wastes discharged to the environment. Safety The talk of safety is never complete without the consideration of the risks of a product to the user. Even when overcharged, the super capacitor does not explode as the conventional capacitor or batt ery would. This ensures that the users and handlers of any gadget remain safe even if they forgot to stop its charging in recommended time. Applications By virtue of its numerous advantages, super capacitors are fast gaining popularity in the design of electronic gadgets. The table below contains most of its applications and the role super capacitors play in those gadgets. APPLICATION FUNCTION Mobile phones Real-time Back up Personal

Artworks in painting from the 16th century Essay

Artworks in painting from the 16th century - Essay Example Until 15th century printed books were elusive or presence of the handwritten materials was left to a few affluent people in the society. The lives of the saints could not learned from books and considering most people in the towns were majorly illiterate people and thus understanding of documents written in Latin became a problem most people. Latin was the main language used in most biblical teaching amidst a wide variety of lingual speaking groups of people. The parish priest applied the paintings in teaching his flock concerning the bible and on saints in general. Such common types of paintings called ‘Biblia Pauperum or in other terms the ‘Poor Man’s and was considered to act as visual aid in helping the congregation in assimilation of the elementary teachings. Some informed people in the villages helped in teachings the crowds on messages contained in the paintings and thus unraveling the main intrinsic relevance of the paintings. The painting had very synonymo us inclusions of exaggerations which were applied in unearthing the data contained in the painting. The paints exhibited traits such as wicked leaders, assassins, executioners, torturers and other quality by the application of the exaggerations in the paintings. The forms of the clothing’s and adornments of the people were also very notable from the paints. The villagers had the skills to identify between the true message delivered and notable exaggeration entailed in the process.

Unclear Energy Assignment Example | Topics and Well Written Essays - 250 words

Unclear Energy - Assignment Example The geographical location of Jordan makes it hard to use water as a coolant and therefore need to find other means of cooling the reactors. The other difference is the availability of the relevant personnel to run the nuclear plants. Sophisticated and technical knowledge is required to manage a nuclear plant ensuring safety and efficiency. The use of nuclear energy in America started back in the 1940s, and therefore enough plans are set up to ensure enough individuals are trained for this job. Jordan is facing a challenge of personnel to operate the machines and maintain the nuclear power plants as it is something that has never been used before in this country. Environmental impact of the nuclear plants is the other difference. Nuclear energy production releases minimal amounts of greenhouse gases to the environment. However, the waste products from nuclear reactors contain radioactive elements that are harmful to human. Proper engineering techniques should be used and far away from human settlement. America has land that can be used for this while Jordan has limited land capacity and hence disposal of these wastes would be a problem. Also, Jordan still uses fuels and oil as a source of energy that highly contributes to the emission of greenhouse gases (Armaroli, 2013). Students contribution is highly required for the establishment of solutions on challenges faced in the energy sector. The first research on other cooling techniques to be used in nuclear plants located in areas where there is scarcity of water. The other is acquiring knowledge regarding operation and maintenance of nuclear power plants s it is a challenge faced in Jordan and other countries. The third is research and advice of disposal techniques of the radioactive wastes so as not to endanger human beings. The use of nuclear energy in America started a long time ago and therefore there is a big difference between the

MGT230. Leadership and Organization Coursework Example | Topics and Well Written Essays - 750 words

MGT230. Leadership and Organization - Coursework Example Transformational leaders involve their followers with a common of achieving great returns (Bertocci, 2009). They create the realization of the importance of specific outcomes and new approaches in which they can achieve those outcomes. Transformational leaders are grounded in ethical foundations, and it converts followers into leaders while leaders transform into moral agents (Day, 2014). Leaders can be classified as either transactional or transformational depending on how they relate to their followers to achieve the organizational goals (Nongard, 2014). Whether political or business leaders their traits inherent in each leader and as such they influence the outcome of the organization and the relationship between the leaders and their followers (Daft, 2009). This document examines the outstanding leadership qualities of the former U.S. president John F. Kennedy. President John F. Kennedy had an ability to handle problems that could not be perceived by any other person. He was determined and dedicated to his work as the president of the United States (Bass & Riggio, 2006). He formed a team of followers and delegated tasks the followers that resulted in team performance instead of individual achievement. Furthermore, he created a culture of open communication by breaking the barrier of traditional bureaucracy by encouraging open communication where people would be free to share with one another irrespective of their background (Bass & Riggio, 2006). He had diverse personality and talent. He respected everyone irrespective of their positions and had acute judgment of the people who would fit in particular positions and nurtured their talents in order to make them more productive in the society. Therefore, one can argue that President John F. Kennedy was more of a transformational leader than transactional leader (Bass & Riggio, 2006).

Research Methods in Criminal Justice Essay Example | Topics and Well Written Essays - 250 words

Research Methods in Criminal Justice - Essay Example In this case, it is used in clarifying the idea behind a concept. Conceptualization, in criminal justice, can be changed by setting clear standards that can be universally recognized in order to cut back on the wide disparity found in research. In addition, the issue of accuracy of research in criminal justice comes in under changes to research. This is concerning discerning the accuracy and measures of variables used in crime and justice (Gibbs, 1989) One of the possible issues likely to arise from the definition of conceptualization is the variation found in research findings. This is in terms of different conceptualization strategies used by different researchers. In criminal justice, conceptualization of crime is difficult in that there are numerous variables to consider thus creating the wide, or rather narrow disparity. This is dependent on the influence of different variables since the issue of crime happens to be very wide (Gibbs, 1989). Influence of certain aspects may be overlooked, as there are no set standards to conceptualization. It also creates issues in terms of how to measure certain phenomena related to crime and justice. This is due to the presence of multiple methods of measuring similar concepts of

Minnie Essay Example | Topics and Well Written Essays - 2000 words

Minnie - Essay Example In the first stanza it is described about how the "sweet and cute" little Minnie becomes a responsible sister "at the age of four". In spite of her tender age since a baby boy is borne after her she has to take care of him. The line 'you are the big sis' connotes that the caring attitude and attention of the elders is now diverted from the girl child to the baby boy. Not only that, the girl is considered as big enough to take care of her little brother. The girl succumbs to the pressure of the elders and makes "compromises" throughout her childhood. Here "compromises" means the character Minnie has abandoned her rights of being loved and cared in her playful days for the reason that she is borne as a girl child and there is a boy already there who deserves more attention as per social norms. The second stanza provides a good continuity to the narration where Minnie, the character of the poem is in her youthful years. By the line "Wedding bells and diamond ring" it is intended that a girl in her nubile age can be of very romantic and contemplative about the beauties of everything. She dreams of love, romance, and an understanding life partner. The beautiful days, she dreamt of are not so long lasting for her. After marriage she hears from everybody that she has grown up to a "wise woman" and she should make adjustments with her husband, with the in-laws and with every situation. The line "Prudent Woman, respect man" is intended to the voice of the society which clearly speaks of male dominance and their presence at the helm of affairs. The allusion of male chauvinism can be very well deciphered from the above line. The third stanza typically describes the plight of woman particularly during her old age. Minnie is now completely alone. She has her children but has been deserted by all. Though she has poured her love, affection to all members of her family but those are hardly remembered by them. A widow who has not learned to face the challenges of the outer world often cries in the lone life. But what she can do except accepting the situation as they are and making compromises. The poem reiterates the prevalence of gender discrimination in the contemporary society, where woman has to take a backseat in the social hierarchy. Least importance is being given to their cause and comfort. Throughout their life they suffer by adjusting to the adverse situations. A Short Story: Independence Day It was an early awakening for Zayed. He sat and looked at his Grandpa's photograph. Usually, he wakes at six (of course after Mama's yelling), keeps his bedding and sleeping mat in proper place, brushes in few seconds and goes out to bring a pouch of milk. Everyday Zayed used to

Exploratory methods Research Paper Example | Topics and Well Written Essays - 1250 words

Exploratory methods - Research Paper Example In such context, Naslund (2008) defined case study approach as contraction of positivistic perspectives where researchers try to formulate case by analyzing secondary data or generate assumptions from small no of observations. Naslund (2008) defined four conditions for which, researchers should select case study approach over other exploratory methods and these three criteria can be defined in the following manner; When the research problem needs to be addressed through qualitative research. When researchers cannot access the primary data from respondents due endogenous and exogenous constraints. When aim of the researcher is to generate new knowledge regarding the research topic rather than validating previous claims. Researcher has the aim to address the research problem in comprehensive manner by comparing the examples of different subject matters. It is evident from the argument of Aastrup & Halldorsson (2008); researchers use summary findings of particular phenomenon as the case and use it to compare the phenomenon. In most of the cases, researchers use secondary sources such as company data, previous research works, academic journals etc to formulate the case while in exceptional cases, researchers might go for primary data based case formation approach (Naslund, 2008). There are some advantages associated with case study based exploratory research such as, 1- cost efficient, 2- requires less time than primary survey and 3- provides holistic view on the subject matter. But, Aastrup & Halldorsson (2008) pointed out that some disadvantages are associated with case study based research approaches such as, 1- researchers might indulge in incorporating subjective view on the research problem in the name of exploration and 2- scope of case study approach decreases with non availability of data. Despite these limitations, Naslund (2008) supported case study based approach as one of the fundamental aspect of exploratory research. Cozby (2012) and Campbell (2012) defined psychobiography as an important aspect of exploratory research which focuses on analyzing the lives of individuals who are historically important. In case of psychobiography, researchers take help of psychological theory and concepts in order to understand the lives of the very individual. Key objective of psychobiography is to understand the personality of the historically important figure and their motive behind taking any action. For example, Campbell (2012) did psychobiography of Jacques Derrida (one of the renowned thinker of twentieth century) while political leaders like Gandhi, Hitler, Stalin are some famous subjects among researchers to conduct psychobiography. Campbell (2012) also pointed out that psychobiography is not commentary like traditional biography rather psychobiography is intended to find self-identity of the historically important figure. Question 7 Jimerson (2003) stressed on the importance of archive as knowledge repository which stores historical dat a, criminal records, litigation papers etc in the course of exploratory research. Jimerson (2003, p. 91) stated that â€Å"representation in archives has privileged the stories of these groups, since it is their voices that are most often recorded and thus most frequently heard in historical accounts.† According to Jimerson (2003), archival research is alternative version