Nuclear Energy Nuclear And Non Renewable Sources Of Energy

Nuclear Energy Nuclear energy has always been considered as one of the best options to replace petroleum and other non-renewable sources of energy since the scientific research begin on it more than half a century ago. With the passage of time, scientists came up with ideas and systems to utilize this energy practically for the benefit of the mankind so that it can be an alternate to the non-renewable sources of energy adding to that some other uses as well (eg. Nuclear medicine). This off course is an engineering task and as a matter of fact scientists do not consider it as their first choice of research. In the following sections, we will see what are the major barriers that the Nuclear energy professionals have to face in next 50 years. The Challenges Each and every challenge that arises to the nuclear industry comes from a very well-known energy related trouble that the world is facing, i.e., to go for a sustainable and clean form of energy which could replace petroleum products. And as the world population grows, this challenge becomes even tougher as more and more fuel is needed for being utilized by the people, which makes it a problem that is to be resolved at a great pace. Some people think that we can never be short of petroleum and other related product, however, scientists, researchers and other more qualified people know how much serious it can get if proper attention is not given in this issue. The amount of oil that is being consumed by the world today isShow MoreRelatedNuclear Energy Vs. Renewable Energy1102 Words   |  5 Pagesdiscovery of nuclear energy, it has remained the most powerful energy source to this day. Despite its superiority in energy efficiency and safety to the environment, fossil fuels are the dominant source of energy in the United States. This paper will analyze developments nuclear energy has made, the factors that contribute to its superiority over other energy sources, and controversies that have inhibited its growth in usage in the United States. In addition, it will compare nuclear energy to fossilRead MoreNuclear Energy : Renewable Energy727 Words   |  3 Pages32% of our energy for electricity? Energy makes lots of things work like machines. There is not just one word for energy, another word is power. Two of the main types of energy is renewable, and nonrenewable. Renewable energy is energy used over and over again. Renewable energy will not run out. Some examples of renewable energy is solar energy, hydro energy, and wind energy. Non renewable is energy is that will eventually run out. Some examples of non renewable energy are nuclear energy, coal, an dRead MoreNuclear Energy Is Essential For The Modern World1400 Words   |  6 Pagesefficient, and safer ways to generate energy that plays an enormous role in keeping modern civilization moving forward. This issue gained immense importance after President Trump proposed budget cuts for science programs affecting nuclear energy research programs. Science energy research programs offer tons of knowledge in regard to better understanding sustainable nuclear energy that contributed to tremendous breakthroughs in the last decades. Nuclear energy is essential for the everyday modern worldRead MoreThe Future Industry in Energy: Dropping the Concept of Nuclear Energy1209 Words   |  5 PagesIndustry in Energy: Dropping the Concept of Nuclear Energy At the start of the mid 1950’s, the world was introduced to a new, alternative source of power that would revolutionize the energy industry; this power became known as nuclear energy. Since that time, nuclear energy seemed to pave the way in efficiency and supply power to countless cities around the globe. However, the past has shown that there are many major disadvantages to using nuclear energy. Today, many individuals believe that nuclear powerRead MoreThe Issue Of Fuel Shortage897 Words   |  4 Pagesproperly. Non-renewable fuels such as fossil fuel and natural gas are running out at an incredible rate as technology advances in aiming to make the public life more convenient. In addition, global warming is also one of the concerns of the modern society due to the emission of greenhouse gases when combusting non-renewable fuels to generate electricity. As a result, scientists are in an emergency to discover an infinite and environmentally friendly alternate energy source t o replace the harmful non-renewableRead MoreAlternative Energy Sources And The Future Of Those Sources1223 Words   |  5 PagesEnglish 150 28 September 2015 Alternate Energy Sources and the Future of those sources Some of the major on-going controversies in this decade are Keystone XL pipeline , fracking and climate change. These issues are co-related to each other and they all have one thing in common i.e energy from fossil fuels . Proponents for the Keystone XL pipeline fracking argue that it would reduce the energy dependence on foreign oil. Although they are good for the energy security of the US, it may be a step backwardsRead MoreNuclear Energy : Nuclear Power Plants1257 Words   |  6 PagesStates has been using nuclear energy as one of it’s main non-renewable energy sources. The source of nuclear energy comes from nuclear power plants, which efficiently generates large quantities of energy and has low greenhouse gas emissions, compared to traditional coal power plants. Currently, there are 61 nuclear power plants operating in the U.S. and using nuclear power plants as a main energy source has always been a controversial problem within U.S. society. By the time nuclear power pl ants bringRead MoreDebating Whether Nuclear Power Should Be Developed for Future Energy Supplies1150 Words   |  5 PagesDebating Whether Nuclear Power Should Be Developed for Future Energy Supplies Introduction I am writing this essay to debate the idea of having nuclear power developed for future use by us. This takes on a major issue and covers many aspects of our nations energy use both in present and for the future. When we think about nuclear power we do not automatically think of it as a non renewable energy source. This is because it is not part of the fossils fuels; coalRead MoreNo Amount Of Monetary Resources : A Transition Away From Fossil Fuels, And Towards Renewable Energy Essay1031 Words   |  5 Pagesand towards renewable energy is required. To achieve this goal, deep and fundamental institutional changes are necessary. The main institutional obstacle that is blocking a transition to renewable energy is the oil sector. This sector is no small obstacle because it has deep pockets, and it is deeply enveloped in every developed country in the world. Per Muzio, natural gases make up an ever-increasing part of the world economy, and a staggering 41 percent of the energy sector [Source Muzio]. ThisRead MoreRenewable Sources Of Solar Energy1150 Words   |  5 Pagesimportant argument regarding energy and its sources. Energy resources are classified into two groups: renewable and non-renewable. Although renewable sources have not yet been exploited to their maximum, their use has been increasing since the 1960’s. T he main renewable energy sources are Wind, Geothermal, and Solar energy. Contrary to renewable sources, non-renewable sources lead in the production of electricity and other forms of energy. For non-renewable sources, Fossil fuel and Coal are the

My own Leadership Journey Samples †MyAssignmenthelp.com

Question: Discuss about the My own Leadership Journey. Answer: My own leadership Journey Leadership is perhaps the key factor for the growth and development of a successful individual. I always had a kind of team spirit within me. I was very much inclined towards any kind of group work. To begin with I would like to talk about my grandfather. He made sure that each and every member of our family is happy and comfortable. He made sure to talk with each and every one of us individually and regularly. He tried his level best to solve the problems of each of the family members and he made sure to encourage everyone of us at every aspect of life. After growing up, finishing up with my education and then joining my job as a senior manager in one of the top MNCs, I have been able to understand and implement all the leadership styles in a better and prominent way (Day et al., 2014). Deriving lessons from my childhood, I have seen that being a leader, I must make sure to initiate proper communication within my team. According to my perception, having a proper communication with e ach other, helps in removing half of the obstacles from the progress path of a team. As a leader, my first responsibility is to see that none of my team members are demotivated at any point of time. Leadership Theories There are many theories of leadership as well that have been influential in my life Great man theory The main belief of this theory is that the individuals born with some great inherent qualities can become successful leaders in their lives. This is because according to this theory, leaders are not made but are born. Though I had the team spirit and the desire of leading several teams in my School and college levels but I do not quite believe this theory. This is because of the fact that there are still many aspects of leadership that I have learnt over time and not right from my birth. Trait theory This theory again is of the belief that there are some inborn traits or specific characteristic features that are present in many individuals by birth. However I havent found this theory to be applicable in my case because this theory has always failed to answer the question that then how is we to categorize those people who contain these qualities but are not leaders. Hence, I cannot highlight any such traits within me right from my birth that has made be an ideal leader (Day et al., 2014). Contingency theory This theory is very much similar to the situational theory which says that any good leader will know which quality to apply and what situation. I find this theory to be somewhat influential in my case because I always try to act as per the requirements of the situation. Situation theory According to my perception, this theory is also very much influential for any and every leaders. I find this theory to be quite applicable in my present job role. I have to take decisions and act as per the demands of the situation. In other words, I have to carry on the method of situational behavior and alter my decisions or my behaviors accordingly. Behavioral theory I often like to go by this theory as it believes that great leaders are not born but are made. This theory believes that people can be good leaders despite of having some physical or mental disabilities. This theory focuses on the actions of the leaders and not on their physical and mental conditions. Management theories This theory is very much business oriented in nature and depends mainly on the principles of rewards and punishments based in the performance of the followers. I find this theory to be kind of well suited to the business purposes but I believe in order to be a good leader one must also know how to be very close to his or her followers not only in the professional field but also in terms of emotion. Transformational or relationship theory This theory has been the most influencing in my case because as the every name suggests, transformational leaders are them who always try to create change within the organization and within the followers as well. In other orders I always focus my leadership qualities to inspire and motivate my flowers. I always keep in mind that my actions must be such so that it can work for the general well being and progress of the team. However I know that this change must be brought not only in the team but also within my individual teammates. Hence, I try to ,motivate and inspire each and every team member separately so that they can recognize their open individual strengths and make use of their highest potential (Neal, Boutselis Bennett 2016). My personality type as per the MyersBriggs Type Indicator (MBTI) :ISF As per my own perceptions, I am an ISFJ personality type. Being a good leader always brings a lot of responsibilities and challenges. I believe that the first important thing that I must do as a leader is to have a sound sense of duty. If I am not dutiful enough towards my work and my followers, then I can never expect the same from them. I always keep in mind that these are not only my followers whom I should guide in the work field in order to increase the productivity of the organization (Adams, Campbell Deming., 2017). As a leader I must maintain some other duties as well like supporting them emotionally. Once it so happened, that I was extremely sick and was asked to take complete bed rest. At the same time I had a board meeting with foreign delegates. This was a meeting for which my team mates had been working hard and putting in all their effort for a long time. I have seen them working with all their dedication by even skiing their meals, their break times and their holidays (OKeeffe, Ozuem Lancaster., 2016). They have done this not only for their own personal benefit but for me as well. So I realized that no matter how much sick I am, I cannot let the hard work of my followers go in vain. So, I plucked up my strength and took my medicines and went to the meeting. This was because I knew that this meeting would not have been possible without me. My team mates would have felt very much neglected. I could not let this happen at any cost ( Clauss?Ehlers Parham 2014).Being a leader I kept in mind that I need duty comes first than everything else. It was my duty to be with followers through thick and thin and to guide them always. Leaders who are influential in my life Here, I would like about two most important people and great icons that have helped me in shaping my leadership skills. The first is the famous US President Franklin D Roosevelt, who has guided the entire nation towards peace and progress. However, the fact about him that has always inspired me a great deal is his will power and his sense of duty towards his followers and his nation. He was rendered paralyzed down his waist and had to use a wheelchair known as the FDR throughout. Another such example is that of Nick Vujicic. He was born with a very rare kind of disease (McCleskey, 2014). He was born without legs and arms. However inspite of having such major difficulties he is today a very renowned painter, an artist and a motivational speaker. He motivates the common public so that they can thrive all the major difficulties in life. Thus I have learned from the case of Nick Vujicic, that there is nothing called as inborn or inherent leadership traits. Leaders like nick Vujicic has m ade me realize that the theories like trait theory and great man theory are really quite pointless in the real world. Feedback given by my partner The feedback given by my partner regarding my leadership journey and my current challenges has also been very helpful. According to him I have been able to develop the 4 types of organizational culture very well within me. Name of cultures Roles associated Power culture I have been able to maintain the dignity and personality associated with my position of a leader. Role culture I have been able to efficiently carry on with my role of guiding and supporting all my followers Task culture I have been able to initiate the smoothness, and speed, accuracy and also the efficiency within all the projects undertaken my group (followers) in the organization. Person culture However, I need to develop or change the take of my followers in this particular field. Improvement area: Inculcating Cultural Leadership As per the feedback given by my partner I need to improve in the person culture part, which basically talks about the values and the principles that are inculcated by me within my followers. The challenge that I have been facing is a kind of disparity, misunderstanding or discrimination going on between many of the team mates or the followers based on different cultural differences. These differences are arising because of the many varied reasons. As all of my team mates are from different national or cultural backgrounds they are often having problems in adjusting with each other. As their leader I had to help them deal with this problem. Principles of cultural intelligence I decided to follow the principles of cultural intelligence Cognitive level I explained and trained all my followers that they are a team and the mantra of team progress is respect for each other. I made them communicate with each other as much as possible by engaging them as small groups in many projects. This would enable them to interact with each other, understand each bothers customs and practices (OKeeffe, Ozuem Lancaster., 2016). Physical level I made sure to inculcate the very basic and common values of peer learning and peer respect within my followers. The first and foremost thing I did was to select a common dress code for the entire team; this at once would bring the feeling of unity within them. I made it mandatory that whenever they come across each other within the organization they must greet each other with a little smile, a greet or a slight pat on the back. Emotional level I also made sure that none of my followers are misbehaving among themselves or hurting the emotions and sentiments of each other. I trained them to be good listeners first and then a speaker. They must know how to respect each other and work together as a team (Neal, Boutselis Bennett 2016). National and organizational culture As I have to maintain a team that comprises of so many people coming from so many different backgrounds I also have to imbibe some aspects of the national and organizational culture. I have tried and imbibed within them some of the universal positivity and negativities. As a modern leader, I must know how to adjust with all my followers who are coming from so many different backgrounds. In order to do this I have to make sure that all the other members working within the organization are also able to adjust easily with their colleagues irrespective of the cultural or global differences. I have inculcated within myself the following principles in order to cope up with the other employees of many band varied cultures (McCleskey, 2014). Universal positivity I have tried my level best to gain the trust of my followers I always try to stay honest in any and every endeavors Motivational I consider it as one of my prime duty to motivate my followers throughout. Universal negativities There are some of the traits that I try to avoid. They are Ruthless Dictatorial Egocentric Irritable As a leader I must always try to appear friendly and frank with my followers rather than being bossy or doctorial. Apart from this, I always try to be one among them I believe unless I see things through their eyes I will never be able to help them or sort out their problems. I must give my egos in order to understand them. If I always try to prove myself superior then I will turn out to be extremely irritable to my fellow followers. They will no longer respect me or obey them. I believe in the values of respect and politeness rather than dictating and dominating (OKeeffe, Ozuem Lancaster., 2016). Culturally contingent leadership qualities In order to act as leader in a global cross cultural environment I have to make sure that I follow some of the culturally contingent leadership qualities like that of Sincerity Logical Sensitive Class conscious Ambitious In order to initiate a proper communication between me and all my followers I have started many new programs and campaigns. These programs would talk about the advantages of speaking freely with one another. I also believe that interacting with employees belonging from so many different cultural backgrounds will also enable in making many new and innovative products and production techniques within the organization. References Adams, L. T., Campbell, J., Deming, K. (2017). Diversity: A key aspect of 21st century faculty roles as implemented in the Robert Wood Johnson Foundation Nurse Faculty Scholars program.Nursing Outlook,65(3), 267-277. Clauss?Ehlers, C. S., Parham, W. D. (2014). Landscape of diversity in higher education: Linking demographic shifts to contemporary university and college counseling center practices.Journal of Multicultural Counseling and Development,42(2), 69-76. Cuervo Castro, N. S. (2016). Multicultural work environment as a key in cross-cultural negotiations and organizations performance: Canada overview. Day, D. V., Fleenor, J. W., Atwater, L. E., Sturm, R. E., McKee, R. A. (2014). Advances in leader and leadership development: A review of 25years of research and theory.The Leadership Quarterly,25(1), 63-82. Grimm, B. L., Watanabe?Galloway, S., Britigan, D. H., Schumaker, A. M. (2015). A qualitative analysis to determine the domains and skills necessary to lead in public health.Journal of Leadership Studies,8(4), 19-26. Leroy, H., Anseel, F., Gardner, W. L., Sels, L. (2015). Authentic leadership, authentic followership, basic need satisfaction, and work role performance: A cross-level study.Journal of Management,41(6), 1677-1697. McCleskey, J. A. (2014). Situational, transformational, and transactional leadership and leadership development.Journal of Business Studies Quarterly,5(4), 117. Neal, D. J., Boutselis, P. S., Bennett, J. (2016). The United Kingdom Ministry of Defencethe Case for Followership as a key Element of Leadership Development. OKeeffe, A., Ozuem, W., Lancaster, G. (2016). Leadership marketing: an exploratory study.Journal of Strategic Marketing,24(5), 418-443. Schyns, B., Riggio, R. E. (2016). Implicit Leadership Theories.Global Encyclopedia of Public Administration, Public Policy, and Governance, 1-7.

The Revelation- Ernest Hemingways A Farewell To Arms Essays

The Revelation- Ernest Hemingway's A Farewell To Arms The Revelation Ernest Hemingways WWI classic, A Farewell to Arms is a story of initiation in which the growth of the protagonist, Frederic Henry, is recounted. Frederic is initially a na?ve and unreflective boy who cannot grasp the meaning of the war in which he is so dedicated, nor the significance of his lovers predictions about his future. He cannot place himself amidst the turmoil that surrounds him and therefore, is unable to fully justify a world of death and destruction. Ultimately, his distinction between his failed relationship with Catherine Barkley and the devastation of the war allows him to mature and arrive at the resolution that the only thing one can be sure of in the course of life is death and personal obliteration (Phelan 54). In order to chronicle Frederics maturation, it is first necessary to understand his character; he is what critics label a Hemingway Code Hero. Indigenous to nearly all of Ernest Hemingways novels, the Hemingway man lives by one simple rule: Man the player is born; life the game will kill him (Rovit and Brenner 90). This man looks to derive meaning and dignity from his stale, directionless being. In Frederic Henrys case, the search for a system of values and morals is difficult because he is caught between two very socially defined extremes, love and war. He only gains knowledge through his direct experience with these two elements and through the indirect teachings of various characters in the novel (Waldhorn 68). It is suggested that Frederic must commit to a comfortable medium between the selflessness of the young priest and the egocentricity of Rinaldi. In the introductory chapters, Frederic is torn between spending his holiday in the cold, clear mountains of Abruzzi with the priests family, and taking his leave in the city, where most of his time would be spent at the dispose of taverns and institutions of prostitution. Frederic chooses to spend his time in the city rather than Abruzzi, although that is where he had wanted to go (Hemingway 13). Frederic realizes that there is a moral and religious way of life, which the priest represents, and he respects these values of the priest. He acknowledges the fact that the priest has a code to live by. On the other shoulder sits Rinaldi, the satisfied, self-assured surgeon with whom Frederic also tries to identify. Rinaldi seems fulfilled, but as the war progresses he falls into a world of despair and disease. Although he cannot see it, Rinaldi too closely resembles Frederics dilemma and therefore is unable to tutor him (Waldhorn 69-70). Tremendously significant, Frederic Henrys exchanges with the priest and Rinaldi play a strong role in his development because he is unable to solely identify with either of them. Frederics education is enhanced by his relationship with the English nurse, Catherine Barkley, as well. Originally, Catherine is nothing more than an object of sensual desire, but as the novel progresses, Catherine becomes symbolic of Frederics final resolution. At first Frederic views Catherine as a replacement for the boring prostitutes that he is accustomed to visiting. He takes advantage of her situation; Catherines fianc? has been killed in the war. I thought she was probably a little crazy. It was alright if she was. I did not care what I was getting into. I knew I did not love Catherine Barkley nor had any idea of loving her. This was a game, like bridge, in which you said things instead of playing cards. Like bridge you had to pretend you were playing for money or playing for some stakes. Nobody had mentioned what the stakes were. It was alright with me (Hemingway 30-31). Typical of an immature youth, Frederic blatantly takes advantage of Catherine. He does not, however, realize the extent of Catherines shrewdness. She commits herself absolutely to the affair only because she had not given her innocence to her deceased fianc? (Donaldson 60). Catherine possesses the one major insight that Frederic does not: death is the end of all existence. Frederic attaches himself to Catherine because he yearns for a sort of order. Having discovered the value of his relationship with Catherine, Frederic returns to the front, only to find

Facts About Phylum Chordata - The Vertebrates

Facts About Phylum Chordata - The Vertebrates The Phylum Chordata contains some of the most familiar animals in the world, including humans. What sets them apart is that they all have a ​notocord,  or nerve cord, at some stage of development. You might be surprised by some other animals in this phylum, as they are very different from humans, birds, fish and the fuzzy animals that we usually think of when we think of the Phylum Chordata. Chordates Have Backbones or Notocords Animals in the Phylum Chordata may not all have a spine (some do, which would classify them as a vertebrate animal), but they all have a notochord. The notochord is like a primitive backbone, and is present at least at some stage of their development. These may be seen in early development, and in some they develop into other structures before birth: All have a tubular nerve cord (such as the spinal cord) above the notocord, which is gelatin-like and encased in a tough membrane.All have gill slits that lead into the throat or pharynx.All have blood enclosed in blood vessels, although they may not have blood cells.All have a tail that has no internal organs and extends beyond the backbone and anus. Three Types of Chordates While animals like humans, mammals and birds are all vertebrates in the Phylum Chordata, not all animals in the Phylum Chordata are vertebrates. The Phylum Chordata contains three Subphyla. The Vertebrates: Subphylum Vertebrata. When you think of animals, you probably are thinking about the vertebrates. These include all of the mammals, reptiles, birds, amphibians, and most fish. In vertebrates, a backbone develops around the notocord, made of bone or cartilage separated into segments called vertebrae. It protects the spinal cord. There are over 57,000 species of vertebrates.The Tunicates: Subphylum Tunicata. These include the salps, larvaceans, and  tunicates  such as the sea squirt. They are invertebrates as they dont have a backbone, but they do have a notochord during development. They are marine filter-feeders, with some tunicates living attached to rocks for most of their life except for a free-swimming larval stage. The salps and larvaceans are tiny, plankton-like free-swimming animals, although the salps  spend a generation as an aggregate chain. They have a very primitive nervous system. Many think that the ancestors of the tunicates also evolved into the vertebrates. There are about 3,000 species of tunicates. The Cephalochordates: Subphylum Cephalochordata. There are only about 30 species in this grouping. They include the lancelets, which are small aquatic filter-feeders that are fishlike. They have a large notochord and a primitive brain. Their circulatory system doesnt have a heart or blood cells. Classification of the Chordates Kingdom: Animalia Phylum: Chordata Classes (the classes in bold below include marine species): Subphylum Tunicata (formerly Urochordata) Appendicularia  (pelagic tunicates)Ascidiacea  (sessile tunicates)Thaliacea  (salps). Subphylum Cephalochordata Cephalochordata  (lancelets) Subphylum Vertebrata Actinopterygii (ray-finned fishes)Amphibia (amphibians)Aves (birds)Cephalaspidomorphi (lampreys)Elasmobranchii (sharks and rays)Holocephali (chimeras)Mammalia (mammals)Myxini (Hagfishes)Reptilia (reptiles)Sarcopterygii (lobe-finned fish)

He similarities and differences between autosomal recessive and Essay

He similarities and differences between autosomal recessive and sex-linked recessive conditions - Essay Example Autosomal recessive conditions manifest themselves only when an individual is homozygous for the affected allele that causes a certain condition The alleles that cause these conditions are not found on the sex genes (the X or Y chromosomes), and the affects are generally masked in the heterozygous parents who possess both a normal, dominant allele and the affected recessive allele. Only offspring with both recessive alleles, meaning both parents are heterozygous carriers of the recessive genes will be affected. These disorders are present in only about 2.5 per 1000 live births, and will not be manifested is the offspring receives a dominant allele from either parent. Sex-linked recessive conditions are found on the sex chromosomes. Females, who have two X chromosomes will only show the condition if, like autosomal recessive conditions, they inherit a recessive allele from both parents. Males, having only one X chromosome, are always affected by X-linked recessive alleles because they have no other dominant allele to mask the affects of the single affected X chromosome (Kumar and Clark 2009, p. 43). The primary difference between autosomal recessive and sex-linked recessive is how males and females are likely to be affected, and how likely each are to inherit, a condition. Examples of autosomal recessive conditions include cystic fibrosis and sickle cell disease. Examples of sex-linked recessive conditions include hemophilia and red-green color blindness.... This means that heterozygous parents may be carriers for certain conditions. Only if both parents pass the recessive allele onto the offspring will the offspring express the condition. This results in the chance that two heterozygous parents pass on an autosomal recessive condition of only 25%, whereas there is a 50% chance that a single heterozygous parents will pass on the condition to the offspring (Kumar and Clark 2009, p. 42-43). Examples of autosomal dominant conditions include Huntington’s disease. 3. Describe the differences seen between benign and malignant tumours. Use appropriate examples, with rationale, to support your points. Tumors arise from changes in a single cell that proliferate to affect areas of the body or even the whole body. Oncogenesis is a multistep process in which the malignant phenotype is expressed, which may occur due to both genetic and environmental factors. Anaplasia and metastatis are characteristics of malignant tumors, but no benign tumors . Anaplasia refers to the reversion of cellular differentiation and often includes an increased ability to multiply without differentiation. Metastatsis refers to the capacity of malignant tumor cells to spread across the body to adjacent and non-adjacent organs, often but not always through the bloodstream (Kumar and Clark 2009, p. 49). Benign tumors are nonprogressive and do not metastatis to other areas of the body. Some common examples of benign tumors include the common mole. Moles may sometimes develop malignancy over the course of an individual’s lifetime, however, so regular examinations by a physician are recommended. 4. Define with suitable examples, the following terms: aetiology,

Summary Essay Example | Topics and Well Written Essays - 250 words

Summary - Essay Example The strontium 90 released into the air is in the form of rain and lodges into the soil and pollutes the plants which are eventually consumed by humans. The effect to humans is diseases such as cancer thus leading to death. The article also talks about the effect of use of insecticides and pesticides including DDT that are used to destroy harmful insects (Carson 9). The insecticides destroy the pests intended and other insects as well thus causing equilibrium imbalance. Argument is that the insects also evolve and develop resistance to the pesticides. The article also talks about the hasty way in which new situations are generated through the influence of humans instead of allowing nature to take its course. An example of radiation is given, and how it has changed from backdrop radiation of rocks, ultra violet light from the sun and attack of cosmic rays to deviant radiation. The deviant radiation is caused by man’s interference with atoms of metals such as copper, calcium and silica making them unstable (Carson 12). The ways in which man uses chemicals has been censured since no proper investigation is done on their effects to water, soil, animals and human being. The environment should be preserved for upcoming generations and other forms of pest control should be used to avoid dire

Language Processing and Production Essay Example for Free

Language Processing and Production Essay This experiment investigated hemispheric specialisation and dominance with regards to language functions. It used a computer program to measure the amount of key presses achieved by participants in a given time across four different trials (1 with the left hand, no talking, 2 with the left hand whilst being asked questions, and the same two trials again with the right hand). The participants were 2nd year psychology students from which a cohort of 20 was selected for data analysis. A significant difference was found for the effect of hemisphere and language processing task present or absent. However, the means for each trial did not support left hemispheric dominance for language functions: more key presses were recorded when talking and using the right hand than when talking and using the left. Handedness and some involvement of the right hemisphere in language processing and production were also shown as appearing to influence the results obtained. The main conclusion to be drawn is that hemispheric specialisation and language dominance is a subject that needs further investigation in order to clarify the generalisability of conclusions made about left hemisphere language specialisations. Our brain consists of two halves; the left hemisphere and the right hemisphere. The left hemisphere receives information from and controls muscles in the right side of the body, whilst the right hemisphere receives information from and controls muscles in the left side of the body. Research using brain imagery and studies of brain damaged and split brain patients, to name just a few examples, has shown that some of our functions are controlled more by one hemisphere than the other, i.e. are more specialised for that particular function. This experiment aims to investigate these differing specialisations of the hemispheres more deeply and with particular regard to language. Research into language differences between the two hemispheres is widespread and supports the view that the left hemisphere is the more dominant. Marc Dax was the first to notice hemispheric differences in his brain damaged patients, after having seen many patients suffering from loss of speech. Dax found what appeared to be an association between the loss of speech and the side of the brain where the damage occurred. In more than 40 patients with aphasia, Dax noticed damage to the left hemisphere; he was unable to find a case that involved damage to the right hemisphere alone (Springer and Deutsch, 1998, p. 1-2). By 1870 further evidence also began to surface, when other investigators began to realise that many types of language disorders could result from damage to the left hemisphere (Springer Deutsch, 1998, p. 1). For example, Brocas and Wernickes aphasia: Brocas aphasia causes speech problems associated with comprehension, resulting from damage to Brocas area (situated in the left frontal cortex), whilst Wernickes aphasia causes word salad (hard to understand, jumbled speech), resulting from damage to Wernickes area (situated in the left temporal lobe). Later research has also supported Daxs original findings, one example of such research concluded that the left hemisphere is responsible for language in almost all right-handed individuals (Butler, S. R. 1997, p. 187). This research also links the additional factor of handedness to investigations of hemispheric lateralisation, an idea which has been supported by others in the field. For example: In right handers , it is almost always the case that the hemisphere that controls the dominant hand is also the hemisphere that controls speech (Springer and Deutsch, 1998, p. 2), therefore it is possible that for left handers, as their dominant hand is being controlled by the right hemisphere, the right hemisphere may be responsible for speech control and other language functions instead of the left hemisphere. Additional research looking at right hemisphere lesions has demonstrated that the right hemisphere is responsible for some linguistical functions: finding that patients with such lesions may be impaired relative to normal controls on certain tests of language (Corballis, C. M. 1983, p. 33). One study by Lesser (1974) reported such an impairment on a semantic test involving comprehension of spoken words but not on a phonological or syntactic test (Corballis, C. M. 1983, p. 33), suggesting a small role for the right hemisphere in language processing. Kinsbourne and McMurray carried out valuable research using healthy participants, using a procedure similar to the current study (cited in Kalat, 2004, pg. 427). They asked participants to tap with a pencil on a piece of paper as many times as they could in one minute, first with their right hand then with their left, then asked them to do the same again whilst talking, they found that for most right-handers, talking decreases the tapping rate with the right hand more than with the left hand. This further supports left hemispheric dominance for language, as well as supporting the current studys methodology and informing its hypothesis. As has been demonstrated most research supports left hemispheric dominance of language functions, but also links hemispheric specialisation with other factors and accepts that the right hemisphere holds some language comprehension control. This experiment looks for further supportive evidence and also briefly looks at handedness as a possible affecting factor. The study uses a finger tapping and language processing task, with the notion that the speed at which keys are pressed will be relatively similar with both hands. If however, if it is the case that language is more associated with the left hemisphere, then on average when processing language, the speed of the right hand will be slower than the left hand, presumably because the left hemisphere then has to do two tasks at once (right hand finger tapping and language processing). This is only the case however if all participants in the experiment have left hemisphere dominance for language, and is thus the reason we have recorded the handedness of our participants. As a result of previous studies and research the hypothesis for this experiment is: there will be differences in the number of taps made from each of the two hands when language is or isnt being processed. Method Design The experiment used a fully repeated measures within-subjects design: all participants took part in all conditions. There was one independent variable, consisting of four different levels: left hand, talking, no talking and right hand talking, no talking. The dependent variable was the number of key presses made within the time limit of 30 seconds per trial.