Cerium Facts - Ce or Atomic Number 58

Cerium Facts - Ce or Atomic Number 58 Cerium (Ce) is atomic number 58 on the periodic table. Like other lanthanides or rare earth elements, cerium is a soft, silver-colored metal. Its the most abundant of the rare earth elements. Cerium Basic Facts Element Name: Cerium Atomic Number: 58 Symbol: Ce Atomic Weight: 140.115 Element Classification: Rare Earth Element (Lanthanide Series) Discovered By: W. von Hisinger, J. Berzelius, M. Klaproth Discovery Date: 1803 (Sweden/Germany) Name Origin: Named after the asteroid Ceres, discovered two years before the element. Cerium Physical Data Density (g/cc) near r.t.: 6.757 Melting Point ( °K): 1072 Boiling Point ( °K): 3699 Appearance: Malleable, ductile, iron-gray metal Atomic Radius (pm): 181 Atomic Volume (cc/mol): 21.0 Covalent Radius (pm): 165 Ionic Radius: 92 (4e) 103.4 (3e) Specific Heat (20 °C J/g mol): 0.205 Fusion Heat (kJ/mol): 5.2 Evaporation Heat (kJ/mol): 398 Pauling Negativity Number: 1.12 First Ionizing Energy (kJ/mol): 540.1 Oxidation States: 4, 3 Electronic Configuration: [Xe] 4f1 5d1 6s2 Lattice Structure: Face-Centered Cubic (FCC) Lattice Constant (Ã…): 5.160 Electrons per Shell: 2, 8, 18, 19, 9, 2 Phase: Solid Liquid Density at m.p.: 6.55 g ·cm−3 Heat of Fusion: 5.46 kJ ·mol−1 Heat of Vaporization: 398 kJ ·mol−1 Heat Capacity (25  °C): 26.94 J ·mol−1 ·K−1 Electronegativity: 1.12 (Pauling scale) Atomic Radius: 185 pm Electrical Resistivity (r.t.): (ÃŽ ², poly) 828 nÃŽ ©Ã‚ ·m Thermal Conductivity (300 K): 11.3 W ·m−1 ·K−1 Thermal Expansion (r.t.): (ÃŽ ³, poly) 6.3  µm/(m ·K) Speed of Sound (thin rod) (20  °C): 2100 m/s Youngs Modulus (ÃŽ ³ form): 33.6 GPa Shear Modulus (ÃŽ ³ form): 13.5 GPa Bulk Modulus (ÃŽ ³ form): 21.5 GPa Poisson Ratio (ÃŽ ³ form): 0.24 Mohs Hardness: 2.5 Vickers Hardness: 270 MPa Brinell Hardness: 412 MPa CAS Registry Number: 7440-45-1 Sources: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Langes Handbook of Chemistry (1952) Return to the Periodic Table

Technical Communication Analysis Assignment Example | Topics and Well Written Essays - 1250 words

Technical Communication Analysis - Assignment Example Introduction to Hardware specific organization: Cisco is an American based multinational entity which specializes in the field of networking and internet connections on local and wide area network levels. It also provides solutions to enterprises of different kinds namely businesses, information technology, governmental organizations and various other sectors. The services provided by Cisco are up to the customers’ requirements fulfilling the factors of quality of Service factor, security considerations fulfillment, I.P solutions provision, and various other online resources sharing and connectivity. Differences: While the first paper (Routers) provides technical details, the second one is specialized and focuses on the guidelines to be followed. The clinical document further provides descriptions and stresses on the importance of documented works, records keeping which will facilitate the work in longer run and at the same time bring about more consistency in the working patt ern in health care sector. While one of them is core technical in its outlook, the second one is relatively easy to comprehend even for the ordinary reader, The first paper provides details such as the capacity, the technologies incorporated in each of the router, the range supported by each of the router and other details. The advantages served by each of them and also the shortcomings that each of them may suffer from. The clinical paper talks of the newsletters, magazines, and other periodicals which will serve to promote awareness and provide details about how the clinical sector operates, what possible improvements are possible and what efforts are being undertaken in this regard. The second notable feature of the clinical paper is the formulation of regulation pertinent to the contracts being made and the payers and other stakeholders. The clinical report provides dates on which various regulations were adopted and later on put into effective action for practical applicability in health care domain. Difference is in the form of the type of people who may have made this report. The router based report is pure work of technical experts, while the latter is more of the policy makers’ work. Other notable difference in each of these papers is relevant to the fact that the clinical paper recommends changes and in the policies through its study, while the technical report of routers does not explicitly mention any need for change as such. The clinical paper contains the area of history recording, which is relevant to the patients history, their family, their hereditary diseases if any, such historic event is missing or unaddressed in the routers related paper. Similarities: The similarities are that each provides details as to how they operate and how they facilitate connection establishment as in case of first paper, and the second in case of how to make the health care sector more vibrant. Other similarity in each of them is that of introduction to the field, although the first one is relatively technical, the second one is relatively easily to comprehend. Each of them is made to provide guidelines and the basic know how of each of the sector. Architecture design specialties: The architectural designs contain terms and concepts relevant to its usage and application. While security, customer needs fulfillment, quality

Pathogoras' Fragments and Hermeneutics Coursework

Pathogoras' Fragments and Hermeneutics - Coursework Example      The two specific interpretations that Protogoras provides in his work titled â€Å"Fragments† center around two major concepts. First, is the issue of relativism, wherein man is viewed as the measure of all things. The question of ethics and what is good and what is not is determined according to man’s standards. One of the central issues in Protogoras is the question of whether virtue can be taught at all and whether citizens can be educated to a point where they become good citizens. Another central theme of the book is that possessing a virtue is equivalent to the possession of knowledge; whereas doing evil is merely an expression of ignorance in a person.   The idea that men who choose to do what is pleasurable to them may be venturing into evil deeds and not have the self-control to remain virtuous, is contested by Protogoras, who states that the very act of doing something pleasurable equates to being virtuous. In other words, he equates doing good to d oing what one finds pleasurable. Protogoras states that the process of learning is centered around the acquisition of knowledge, i.e, learning to be virtuous means in effect, learning a specific science or kind of knowledge.  Ã‚     The two specific interpretations that Protogoras provides in his work titled â€Å"Fragments† center around two major concepts. First, is the issue of relativism, wherein man is viewed as the measure of all things. The question of ethics and what is good and what is not is determined according to man’s standards. One of the central issues in Protogoras is the question of whether virtue can be taught at all and whether citizens can be educated to a point where they become good citizens. Another central theme of the book is that possessing a virtue is equivalent to the possession of knowledge; whereas doing evil is merely an expression of ignorance in a person.   The idea that men who choose to do what is pleasurable to them may be vent uring into evil deeds and not have the self-control to remain virtuous, is contested by Protogoras, who states that the very act of doing something pleasurable equates to being virtuous. In other words, he equates doing good to doing what one finds pleasurable. Protogoras states that the process of learning is centered around the acquisition of knowledge, i.e, learning to be virtuous means in effect, learning a specific science or kind of knowledge.   Plato was the one who formulated the term â€Å"rhetoric†, because before his views were propagated, verbal art was not well understood and the general understanding was that verbal art and dialogue was more holistic. But Pluto has highlighted how it is actually differentiated. the major issue that Plato has expounded is to clarify and establish a clear difference between rhetoric and philosophy. There are differences in the teaching about logos; one is the goal of seeking success and the other is the goal of seeking the truth – the former is rhetoric and the latter is philosophy.3.     A linguistic element may be both vocal and psychological in nature. There is an internal concept associated with each linguistic unit, which may exist in the mind and its understanding of the linguistic element. The other is the external sound-image, which is the spoken word. Linguistic elements are the foundation of language and because the process of formulation of language is such a complex one, it is not one that easily lends itself to changes. Moreover, it forms a common link between various generations; it forms the means by which linguistic signs can be used to depict reality.  

Leadership Issues of Different Not for Profit Organizations Research Paper

Leadership Issues of Different Not for Profit Organizations - Research Paper Example INTRODUCTION: Ongoing changes and advancements in the overall scenario of the world have placed additional importance on the role of the leader in any organization. Leader is a person who directs and guides a certain group of people for the achievement of a particular objective or aim (Fleishman, 1953). Leaders are associated with the tasks of not only managing the people but they have to perform their own tasks and become an inspiration for others. Leadership has evolved as one of the most studied and researched areas. The concept of leadership has been closely associated with the ideas of organizational structure, organizational culture, employee motivation, employee productivity, and overall performance of the organization (Judge, Bono, Ilies, & Gerhardt, 2002). There are different styles of leadership which are based on several factors. These various styles of leadership have certain implications on the output generated by the organizations. Despite of the considerable research work in the area of leadership, researchers have been ignoring the importance and other implications of leadership in the nonprofit sector. Young Entrepreneurs Association of Laos (YEAL) has been established with the aim of promoting youth entrepreneurship in the country and supporting different young entrepreneurs. This Not for Profit association facilitates the growth of new business ventures on part of youth. This not only helps the young entrepreneurs but also improves the status of overall economy.

Work-related stress amongst employees

Work-related stress amongst employees In the main, business managers are failing to deal with the problem of work-related stress amongst employees. Work-related stress is a common problem of modern lifestyle which has spread all over the world and touched almost all vocations (Life, nd, p.1). Job stress is a chronic disease caused by condition in the workplace that negatively affects an individuals performance and/or overall well-being of his body and mind (Life, nd, p.1). Sources of work-related stress include high demand of performance, family pressure, poor interpersonal relationships and career concerns. The consequence of the stress will lead to less self-confidence, worse performance and even suicide. As the stress which detrimental to peoples health has become more and more severely, how to cope with the situation is attracting increasing peoples attention. This essay focuses on problems of athletes stress and submits some solutions to the problems for sports managers. The natures of the stress can be split into two parts: physical symptoms and behavioral symptoms (speaking book, 2008). The physical symptoms include: tiredness, nausea, headaches, muscle tension, nervous twitches and altered sleep patterns. Aggression, anxiety, poor decision-making, inability to prioritize, mood changes, difficulty in concentrating, feelings of failure and isolation are belonging to behavioral symptoms (speaking book, 2008, p.95). All of these symptoms can reflect the athletes work-related stress. The causes of the athletes job stress are intricate and complex. They can be mostly divided into 4 parts-environmental issues, personal issues, leadership issues and team issues respectively. Firstly, environmental issues, which include selection, finance, and training environment, is a factor that contributes to the stress (Tim Lew, 2001). Selection is consisted of late selection, a lengthy selection process and unfair selection system. Some athletes illustrate that they feel nervous and tense if they do not know whether they will be chosen for competition. They fear that they will not have enough time to prepare the competition which lead to the stress. And some unfair selection also causes the stress of athletes as they can not obtain the chance of equal competition (Tim Lew, 2001). Finances play an important role in stress. It includes not having enough funding money and differential financial support. Athletes spend most of time on training so that they do not have extra time for earning money. Therefore, they have to obtain the funding from sport organization, sponsorship or family. If the financial support is not enough or is poorly managed, athletes will feel depressive and anxiety (Tim Lew, 2001). Training environment may be being able to lead to the athletes stress if athletes exist in the two opposite environments at the same time. The incompatible environment will make athletes feel uncomfortable. The second part which is the most important one is personal issues. Personal issues contain nutrition, career concern, interpersonal relationship, injury and external distractions (Tom, et al 2000; Tim Lew, 2001). Poor provision of food and disorder eating habit will lead to innutrition or obesity which will influence the athletes performance (Tim Lew, 2001). A female athlete says that diet is her worst puzzle, which will lead to stress (Tim Lew, 2001). A study shows that external distractions (23%) and career concern (19%) are the two major causes for stress (Pensgaard, 1998). Roberston Cooper(1983) believe that career stagnation, high expectation from other people and unrealistic goals, which are the main components of career concern, may give rise to stress if athletes fail to achieve the expectation and goals (Tom, et al 2000). At the same time, external influence also brings stress to athletes. The press, media, spectators and family make athletes distract from their work wh ich consequently influence their performance (Pensgaard, 1998). For example, David Beckham, who is a talented football player, fell out with his coach because the coach thought that David paid more attention on entertainment area than on training. Such action had impeded his development of football skill. At that time, David also had to face a big stress from his wife, who was his manager for planning the commercial activities. Poor interpersonal relationships in a team are another factor of stress. There are three important sets of relationships-relationships with sports managers, with coaches and with teammates. Low interpersonal support from sports managers, coaches and teammates will be linked with high anxiety, tension and low performance satisfaction which increase the risk of obtaining pressure (Tom, et al 2000). In addition, injury, which is the worst thing for athletes, often results in pressure. Most of the athletes who get hurt will worry about their career as they fear that they can not get opportunities to go to the competition or they will lag behind because of less training (Tim Lew, 2001). The third part of the cause is leadership issues which focus on the aspect of coach. Coachs differential treatment of athletes, overbearing coach, coach very demanding and coach-athlete tension are the reasons of athletes pressure (Tim Lew, 2001). Coachs attitude influences athletes deeply because he plays a vital role in a team and has the right to decide which athlete will be chosen for competition. Most of athletes fear that they will be ignored by their coach and some athletes feel stress as they can not bear the workload (Tim Lew, 2001). Moreover, coaching style is another cause of athletes stress. Some athletes can not adapt to different coaching styles which may deter their development. The poor performance of an athlete results in a rise of the pressure (Tim Lew, 2001). Team issues, as the last part of the cause, can not be ignored. It main includes: team atmosphere, communication and support (Tim Lew, 2001).Team atmosphere is a main issue which relates to the tension between the athletes. A new team member, injured athletes and separate groups within team may lead to the poor team atmospheres which engender a tense situation in the team. The supports from teammates, coaches and sports managers are the mental underpinning of athletes which make them get rid of the negative mood. Without support, athletes may feel helpless and even stress (Tim Lew, 2001). Persistent stress may result in long term consequences which may alter the way the athletes feel, thinks and behaves, and may also change their physiological function (Stansfeld et al, 1999; SanterMurphy, 1995; Cincirpini et al, 1984; Stainbrak Green, 1983, cited in Tom, et al 2000). Effects of athletes stress may work on individuals and teams respectively. For individuals, effects of stress may include: sleep disturbances, headaches, gastrointestinal upset, cardiovascular disease, anxiety and depression, labile emotions, less of concentration, lack of motivation, substance misuse and poor performance (University of Cambridge, 2008). While for team, consequences of stress may mean low morale, increased athletes complaints, increased accidents, high absenteeism and poor performance which will influence the development of the team (University of Cambridge, 2008). Because of the high dangers of the athletes stress, how to tackle the problem has become the focus of sports managers. There are some solutions can be used to help sports managers cope with the stress of athletes. First of all, sports managers have to take responsibility for athletes diets and ensure athletes maintain good nutrition (Dean, 2007). Secondly, sports managers should prevent athletes from working overload. Therefore, they should give athletes manageable training schedule so that they will not feel too tired. Keep good relationship with athletes and manage the relationship between athletes are both important for sports managers. The supports from teammates, coaches and sports managers are the mental underpinning of athletes which can help them release from stress (Tim Lew, 2001). To athletes, stress is a persistent problem which often influences their performance and life. Although sports managers are trying to deal with the situation and some of them have been taken some solutions, athletes continue to be affected by stress problem (Pensgaard, 1998). The solution taken by sports managers, such as effective time management, health diet and keeping good relationship, are useful at the certain extent. However, some accidents which can not be predicted by sports managers would also result the stress. So, while deal with the existing stress is important, detecting the possible sources of stress for athletes may be is a more effective way to avoid the happening of pressure (Pensgaard, 1998). Bibliography Pensgaard AM, Ursin H. (1998). Stress, control, and coping in elite athletes in Scand J Med Sci Sports Journal Vol. 8 pp183-189 Tim, W. Lew. H. (2001). A case study of Organizational Stress in Elite Sportin APPLIED SPORT PSYCHOLOGY Journal Vol. 13 pp207-238 Tom. C et al. (2000) Research on Work-related Stress. Bilbao: European Agency for Safety and Health at work (see Epi) Life. Stress at work. Joan, M. Sebastian W. (2008) English for Academic Study: Speaking. England: Garnet Publishing Ltd Human Resources Division of Cambridge University. (2008) Effects of Work-Related Stress http://www.admin.cam.ac.uk/offices/hr/policy/stress/effects.html> [Accessed on 27/5/2008] Dean H. (2007) Stress and the Athlete http://coachdeanhebert.wordpress.com/2007/12/16/stress-and-the-athlete/> [Access on 16/12/2007]

Sumner - Brooks Incident :: essays research papers

Preston Brooks was born in Edgefield District, South Carolina on August 5th, 1819. He graduated from South Carolina College (now known as the University of South Carolina), in 1839, and after he graduated he studied law and was admitted to the bar in 1845. Brooks also served in the Mexican-American War with the Palmetto Regiment. After he had returned from the war, Brooks fought a duel with future Texas Senator Louis T. Wigfall. In the duel, Brooks was shot in the hip, forcing him to use a walking cane for the rest of his life. In 1853, Brooks was elected to the 33rd Congress as a member of the Democratic Party. While in office, Brooks had met an anti-slavery campaigning Senator named Charles Sumner. Charles Sumner was born in Boston, Massachusetts, and graduated from Harvard law school in 1830. He edited a law review, the American Jurist, and served as a reporter for the United States Circuit Court. Sumner also lectured on constitutional and international law at Harvard ’s law school for three winter terms. Sumner first became a politician in 1845, while the Mexican-American War was in dispute. In an Independence Day speech before city officials in Boston, Sumner denounced the use of war for settling international disputes and promoted arbitration instead. He also opposed the annexation of Texas and criticized the institution of slavery. From these speeches, Sumner was known as a keen and favored public speaker. In 1848, Sumner abandoned the Whig party in support of Martin Van Buren’s unsucc essful Free-Soil campaign for presidency. In 1851, a Democratic-Free-Soil coalition in the Massachusetts legislature chose Sumner to fill the U.S. Senate seat of Daniel Webster, who had resigned to become Secretary of State. While Sumner was in the Senate, he became a leader of the anti-slavery-forces. During the debates on slavery in Kansas in May 1856, Sumner delivered a two-day oration called "The Crime against Kansas", that brutally defamed Southern expansion of slavery. When Sumner gave this speech, Congressman Preston Brooks of South Carolina believed that Sumner had insulted his uncle, Senator Andrew Butler. Brooks backfired and used his cane to beat Sumner, who was seated at his desk on the Senate floor, until he was unconscious. Sumner, bleeding profusely, had to be carried out of the room. Sumner’s injuries from the beating kept him out of office for three years. The severe beating on the Senate floor helped escalate the tensions that led to the Civil War and became a huge symbol for both the North and South.

Education, Teaching and Curriculum Essay

Education has always been an important aspect in the course of personal and societal development as a whole. Every individual has an urge and personal willingness to learn valuable information that varies from either practical knowledge o scientific ones. However, all of these relevant informations are very much needed by every individual to be able to develop their own self and become self-sufficient and productive members of the society. Education has many methodologies from which one individual can attain it in a scientifically formulated pattern. This is actually the main pattern accepted and utilized by all educational institution in their formal learning process and even implemented by those who implement informal ones. Gradual and progressive pattern is the most effective and easiest way used in learning process because it mainly accommodates normal brain development and innate learning abilities of the person. In this learning process, the main methodology commonly used in the per curriculum basis encompassing teaching instructions for learning individuals. Curriculum is literally defined in education as a set of courses regarding different classes or subjects offered in different educational institutions such as a school or a university. Embedded in its process are different specific classes for minor and major aspects that are all conjoined in adherence to the course objective of the entire curriculum. This is actually formulated and expressed in terms of its learning outcomes and for the development of the students taking up the said curriculum. Curriculums in general, whatever its subject or class is, are all created to envelope the learning process of individuals learning their specific course to develop and acquire valuable and relevant skills in that specific field. The main learning approach commonly used in the curriculum teaching is based on a set of instruction, which are all directed to guide the students in the gradually process of learning in the curriculum. Instructions are a basic aspect of the learning process. They are all formulated to guide students in their gradual learning process in their respective fields. In educational curriculum, instructions serve as a form of communicated information that has a command and explanation nature. Thus, instructions are descriptive explanations for how an action, behavior, method, or task is to be begun, completed, conducted, or executed. Because of their significant relevance to the learning process of individuals, instructions are explicitly used in the approach system and learning process in a curriculum. Learning instructions are generally formulated and given to students to guide them in discovering and thus learning the different specific informations and processes that are significant in the execution and completion of their respective subjects that are enveloped in their curriculum. With consideration of the definition and significant or the two main aspects in the learning process, curriculum and instruction have a direct relationship with each other. In the education aspect, curriculums are generally composed of specific set of instructions in specific subjects based on its respective course. Instruction are formulated and applied by the educational institutions to guide and educate explain to their students the knowledge and information in the different subjects encompassed in the gradual learning process of their different curriculums in every courses or fields. Thus, curriculum and instructions go side-by-side in systematically developing and directing the educational system to better address the normal mental development and innate learning process of the students thus encouraging more productive and efficient learning approach for the society. In terms of the higher level of educational set up, the curriculums offered as well as the regulations are diversely changed to apply to the demands required for the learners. Obviously, the requirements of concentration and focus from the students are heightened. However, this does not add the directly instructional as compared to that of the lower levels of learning. Obviously, this is primarily because of the fact that the students in this level are already matured enough to be still instructed on what they are supposed to do. The students are rather expected to place higher concentration and intend to pursue in a better level of focus on the proper learning attitude needed for them to survive this particular stage of learning. The instance of being able to survive the scholastic challenges presented by the higher and more demanding environment of education is a primary achievement among those who are concentrating to attain the best out of their learning in this level of educational state. Most of the time, the students are known to be pressured in this set up, but all these procedures are strongly applied to actually help in the process of making the students see the real implications of their lessons in actual life.