Size Reduction and Screening Essay Example for Free

Size Reduction and Screening Essay Size reduction and screening The purpose of this experiment was to determine the affect of vibration rate and time on the size reduction and size separation of particles. The objective was successfully completed and the initial sample of soil was separated by vibration into finer particles with a large amount passing through the smallest diameter screen which was 0. 0278 inches producing a final product of fine soil particles which are now easier to transport and store. As can be seen from the graph below (figure 1) undersize particles verses screens, all three different vibration settings (45%, 65%, 85%) produced similar results for the screening process. At the beginning of the experiment (time zero) all of the soil sample was placed on the first screen, number 5, and after repeated screening (vibrating) the sample was broken down in more uniform sizes leaving larger pieces of soil left on the screen while smaller sizes fell through finally producing a fine powder left in the bottom pan. As can be seen from the graph below, after six minutes (the fourth bullet point on graph each bullet point represents two minutes of vibrating) the soil had mostly been sorted into its final sizes. This occurred for all three different vibration settings indicating that after a certain time period, six minutes for this particular experiment, the screening process is 90% complete and may be more cost effective to stop the process as only a small percentage is then sorted into smaller sizes. It can be seen though, that after a few minutes of screening, the original soil sample was sorted into a much more manageable sample making storage and transportation much easier. With regards to retained soil over time, again all three percentage settings produced similar results. The pan weight increased over time as more soil was broken down and this was to be expected as this is the purpose of this particular procedure. Screen 5 and 12, with the larger diameter holes contained the larger, unbreakable soil samples slowly decreased in soil being retained until only the large unbreakable matter was left. All the screens, screen number 14, 16, 20 and 25 kept a rough constant weight indicating that a certain percentage could be broken down and pass through the screens while the rest had reached its optimum broken down size. The higher vibration setting, 65% and 85% had more constant weight and this was due to the sample being vibrated at a higher setting and being broken quicker and thus settling. To conclude, from this small scale experiment alone it can be seen that size reduction and screening is a very useful and effective procedure in reducing the size of a sample making transportation cheaper and easier and taking up less storage space and in a world of cutting costs, this procedure has become vital to a number of different industries

Botswana Essay -- Africa Culture Papers

Botswana (1)The people of Botswana are presently torn between the survival of its ancestors’ cultural traditions and the growth of an optimistic republic. Within this study, the characteristics of Batswana’s lifestyles from the past, their present conditions, and outlooks upon the country’s future will be discussed. Botswana was born a country of flourishing diversity. It was a land inhabited by nomadic Bushmen (also known as San or Basarwa) and countless numbers of different tribes, who coexisted peaceably with one another. These people of ancient times lived contentedly through the land’s provisions of plants and abundant species of animals and through prosperous trade with each other. Today, this simple way of life conflicts the nation’s potential wealth in democracy, cattle industry, diamond-mining, and other technologies. Both lifestyles have their advantages and disadvantages, a majority of which will be portrayed within this composition. Botswana is entangled in a struggle to produce what is healthiest for its country’s people and environment for the present time and for the infinite years to come. This study will explore several different hardships that Botswana is suffering and the peace that the people have maintained throughout the years. (2) Concerning Botswana’s condition, the national geography standards that this study mainly relates to focus upon places and regions and environment and society. The physical and human characteristics of Botswana will be emphasized by geographical descriptions of the land and its resources and wildlife, and by portraying the attributes of the government, cultures, religions, and everyday lives of Batswana. How culture and experience influence people’s perceptions of p... ...ricanet. "Botswana History." http://www.africanet.com/countries/botswana.htm (1997). Central Intelligence Agency Fact book. â€Å"Botswana." http://www.odci.gov/cia/publications/factbook/bc.html (2 Feb. 1999). Conservation International Foundation. "Botswana." http://www.conservation.org/WEB/FIELDACT/REGIONS/AFRIREG/BOTSWANA.HTM (7 December 1998). Inter Green Services Limited. "Botswana: the mysterious soul of ancient Africa" http://www.safariweb.com/botswana/index.htm (1996). Inter knowledge Corporation. "An Introduction to Botswana." http://www.interknowledge.com/botswana/ (2 Feb. 1999). Nsereko, Daniel D. "Religious liberty and the law in Botswana." Journal of Church and State Autumn 1992: 843-862. Zich, Arthur. "Botswana: the adopted land." National Geographic December 1990: 70-97.

Leaders: Strategies for Taking Charge by Warren Bennis

Leadership (management in another way) is found to be the most crucial topic of corporate America. Leaders: Strategies for Taking Charge by Warren Bennis and Burt Nanus explain the four important keys to effective leadership. These four keys are attention through vision, meaning through communication, trust through positioning and the deployment of self. The leadership keys would explain how a manager (who do things right) is different from a leader (who do the right thing). This management mantra is very much helpful for organizations (companies of all kind). Vague restructuring, absence of leadership and lack of trust and communication has made the workplaces and companies a living pandemonium. Managers with great management insight can only save these sinking business entities. Leaders: Strategies for Taking Charge is a clever advice to both big and small managers alike. The authors Warren Bennis and Burt Nanus are Professors in Business Management. The former has more than 40 years experience in management literature and the latter had first hand management experience in several companies. Warren Bennis has even served as advisor of U.S. Presidents. He had served as a university administrator and has advised several Fortune 500 companies. He had been the President of the University of Cincinnati for 7 years. Burt Nanus, on the other hand has worked as a Professor Emeritus of Management at the University of Southern California. The management ideas of these gurus have made Leaders: Strategies for Taking Charge an excellent management text. Leaders: Strategies for Taking Charge is a book that would help managers cultivate excellent management skills that would also make their organization go up in the ladder. Chicago Tribune has commented about the book as a ‘one of the most important books of its type in a long time’. The book emphasizes that leadership (and management) skills are learnable and are not fully in-born. The book would be really boosting for managers though certain sections appear bit dry. The book is highly rewarding for management students also who is about to reach the chair of a manger. The book is considered as one of the top 50 business books of all time by the Financial Times. The book says that the speed and pervasiveness of technological change would be the most disturbing factor of the leaders of this present age. Organizations need to be filled with expert workers who can handle jobs independently. The mangers therefore should be able to handle these complex situations with great managing skill. Leaders: Strategies for Taking Charge explain those skills that would help a manager excel in an organization of any kind. The book would equip managers with skills that would help them successfully handle the rapid technology updates. It also would educate the leaders how to mange the organizational and structural developments. Leaders can learn the basic management skills identified by the authors and apply them in their organizations. Authors have completely undermined the traditional myths about leadership, and have proved that management is a set of skills that can be learned, studied, and mastered by voluntary attempts. They have also come up with certain key insights of leadership. For example ‘Leaders must display a passion to realize their vision’, ‘Leadership is about character’, ‘Leaders must be able to generate and sustain trust’ etc. Leaders: Strategies for Taking Charge is thus a really treasure to any manager or future manager. Works Cited Warren G. Bennis and Burt Nanus, Leaders: Strategies for Taking Charge, 1997. Â  

A Comprehensive School Counseling Program - 905 Words

Foundation A comprehensive school counseling program is needed to function effectively in the service of children with respect to race, gender, age, socioeconomic status, social/personal development and academics. With a paradigm shift in how counselors respond to students, the focus has turned from what Bowers calls â€Å"entitlement to performance.† In an effort to implement a comprehensive program this high school has been identified as a candidate This high school has an enrollment of approximately 2000 students; 49% white , 32% black, 10% Hispanic, 5.4% Asian or Island Pacific, 3% Multi racial and .6% Native American. Additionally, 17.3% of students are classified in a special education program, and 24.8% of the student population has free or reduced lunch. The student suspension rate was 2.2% with no expulsions during the past school year. What are some of the concerns with this school? Large numbers of individuals who do not perform well on standardized tests. They also have no experience with volunteering outside of two or three clubs. In preparation for careers they are not adequately prepared to fill out an application, write a resume and effectively perform well in an interview. Our population of underrepresented students have an issue connecting with teachers creating a disconnect with their education and desire to want more for themselves. We have to create a culture of individuals who are career ready and not scrambling at the end of senior year trying to find outShow MoreRelatedThe Comprehensive School Counseling Program1664 Words   |  7 PagesThe Comprehensive School Counseling Program Notebook which follows the ASCA National Model third edition was created in School Counseling Programs. This notebook is divided into four components as directed by the comprehensive school counseling program: foundation, delivery, management, and accountability. 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