Solidification Definition and Examples

Solidification, also known as freezing, is a phase change of matter that results in the production of a solid. Generally, this occurs when the temperature of a liquid is lowered below its freezing point. Although the freezing point and melting point of most materials are the same temperature, this is not the case for all substances, so freezing point and melting point are not necessarily interchangeable terms. For example, agar (a chemical used in food and the laboratory)  melts at 85 C (185 F) yet solidifies from 31 C to 40 C (89.6 F to 104 F). Solidification is nearly always an exothermic process, meaning heat is released when a liquid changes into a solid. The only known exception to this rule is the solidification of low-temperature helium. Energy (heat) must be added to helium-3 and helium-4 for freezing to take place. Solidification and Supercooling Under certain conditions, a liquid may be cooled below its freezing point, yet not transition into a solid. This is known as supercooling  and it happens because most liquids crystallize to freeze. Supercooling may be readily observed by carefully freezing water. The phenomenon can occur when there is a lack of good nucleation sites from which solidification can proceed. Nucleation is when molecules from organized clusters. Once nucleation occurs, crystallization progresses until solidification happens. Solidification Examples Several examples of solidification may be found in everyday life, including: Freezing of water to form ice in an ice cube trayFormation of snowCongealing of bacon grease as it coolsSolidification of melted candle waxLava hardening into solid rock

Project Integration Management Simulation Analysis

Project Integration Management Simulation Analysis In the current business environment, the demand for project managers is ever growing. In short, project management is a provisional project constrained by time, cost and scope (A guide to the project management body of knowledge, 2013). Between the immense organization, optimization, and communication assets skilled project management brings to a project, it is easy to see why project management is a booming field of study. Furthermore, project management can be both financially and personally rewarding when long term milestones and goals come to fruition. However, obtaining the knowledge required to successfully orchestrate and manage projects is a challenge within itself. Individuals with the drive and desire to become project managers have a number of options regarding the means of properly equipping oneself for real world project management situations. In addition to seeking an academic degree in project management, and before becoming a certified Project Management Professional (PMP) with the Project Management Institute (PMI), learners are encouraged to participate in Project Integration Management Simulations through the PMI Registered Education Provider (REP) and world-class education simulation company, Double Masters (Double Masters, 2016). Lessons Learned Through Project Integration Management Simulation According to project management simulation professionals Double Masters, project management simulation isShow MoreRelatedSoftware Tools Used By The Knowledge Areas Of Project Management738 Words   |  3 Pages4. 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To do proper risk rating and ranking, a rating matrix needs to be defined. The rating matrix used by Project Pluto is included below. Risk Determination Documented risks are rated by likelihood of occurrence and impact to the project. The factors below define the overall risk ranking. Table A documents the criteria used in determining overall risk ratings. Table A: Risk Rating MatrixRead MoreWhy Dr. Are Improved Energy Security, Cost Reflective Tariffs And More Integration1336 Words   |  6 Pages7. Conclusion and recommendation This chapter provides an overview of this project, makes recommendations and suggests further research areas. 7.1. Overview DR is playing a big part in utilities around the world and is set to become even bigger, enabled by the smart grid and the increase in penetration of DERs. South Africa has already started on this journey and has several DR programmes running in the industrial sector, mainly the larger consumers. The smaller industrial, commercial and residentialRead MoreFlood Risks And Its Effects On Human Beings1491 Words   |  6 Pagesdeveloped to help in the effective management of flood risks such as the socio-economic factors and the hydrologic cycle which have to be taken into consideration while discussing floods. Thesis Statement This particular paper, has therefore, created a discussion of floods by noting the impact it has on human beings by looking at the possible causes as suggested by scholars and also looking at mitigation strategies. Mitigation strategies include management strategies and the projection methodsRead MoreThe Effect Of Dss On The Corporate World989 Words   |  4 Pagesand management. Information systems of executives and other business performance software require faster decision making, identification of negative trends, and better allocation of business resources. 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The Effects of Colonization in Africa Free Essays

While Africans were deprived of basic human rights in some regions and lost many of their cultural aspects, these characteristics were overridden by industrialization, more job opportunities, and improved political structure during the European colonization of Africa from late 19th to mid-20th century. In document 5, it states â€Å"when the whites came to our country, we had the land and they had the Bible; now we have the Bible and they have the land,† an African proverb regarding the Europeans. Through missionaries, Africans gained the trade network and interracial relations, and Europeans expanded their territories as a result. We will write a custom essay sample on The Effects of Colonization in Africa or any similar topic only for you Order Now The cheap labor force and raw materials were sent back to the mainland to be finished. The surplus goods from Europe were then sold in higher prices to Africans who could afford it (doc. 2). However, the natives were not always guaranteed equality (doc. 8), thus creating tension. Furthermore, there was friction among different tribes within a colony, due to the fact they were in the same location (doc. 11). Yet, it had a positive impact on economics as well. In some parts of Africa, one woman stated that the people were fortunate to be treated well compared to other parts. They were rewarded goods for their work, and the word â€Å"slavery† was abolished (doc. 6). The railroad was constructed for transporting the materials. Also, different tribes developed irrigation systems, and learned the use of the domestic animals, manure, and mechanical work (doc. 3). Additionally, people were taught different skills such as mining and blacksmithing. Some argued that this is forced, but it is rationalized that the natives are savages, therefore it was for their own good (doc. 1). In addition to economics, Europe brought political stability. From the Europeans’ perspective, the new government implemented by Europeans guaranteed the protection of people and their possessions (doc. 9). The tug-of-war (doc. 4) between the nations shows how it affected a colony’s political system. Thanks to the railroad, the government can oversee their colonies efficiently (doc. 7) while using militarism when needed (doc. 10), protecting their own colonies. Documents that would be helpful are from the ruling class for better understanding of its influence on the social hierarchy. How to cite The Effects of Colonization in Africa, Papers

Institutional Pharmacy Setting Essay Example For Students

Institutional Pharmacy Setting Essay Institutional Pharmacy Setting 1 Institutional Pharmacy Setting Axia College of University of Phoenix Leonalda Cruz Institutional Pharmacy Setting 2 An institutional pharmacy provides an array of services for residents of nursing homes, hospitals, hospice care, and other long term facilities. In this particular setting, the pharmacist will take responsibility for the medication that the patients’ need and ensures that patients’ medications are appropriate, effective, safe, and they are used correctly. A pharmacy technician may work with less supervision in this setting, so it is important that the technician also be familiar with dosing, compounding, IV administration, and other drug relation procedures. The institutional pharmacy provides delivery service and prescription drugs that are individually packaged. Pharmacists constantly check patients’ drug interaction to avoid duplication of the treatment and reactions. The institutional pharmacy is a principal defense against medical errors and allows the pharmacists and staff to provide patient the quality care that they deserve. The pharmacist counsels patients, provide drug regimens, and oversee medication distribution. Institutional pharmacists and technicians use controlled dispensing systems to make sure that patients have the right drugs at the right time and in the proper dosage and form. Intense services and comprehensive scope are other services provided by the institutional pharmacy. o  Ã‚   For what tasks might an institutional-pharmacy technician be responsible? o  Ã‚   How are medication orders processed in an institutional pharmacy setting? o  Ã‚   How do institutional and noninstitutional pharmacy settings differ? o  Ã‚   What patient issues might arise when working in an institutional pharmacy setting? o  Ã‚   Which issues may be unique to institutional pharmacy settings?

Slavery in America

By 1750, most slaves in America were not African born but America born. Several slaves worked in sugar, cotton and tobacco plantation. Very few of these slaves were African born, because the reduction in the importation of slaves from Africa.Advertising We will write a custom essay sample on Slavery in America specifically for you for only $16.05 $11/page Learn More Majority of these slaves were born in America, but they were descendants of Africans who were imported in America (Ira 112-115). During this time, there were three slavery systems. Slavery in South Carolina and Georgia low country was very harsh than the one in the Northern colonies. Most Slaves were imported from Africa to work on sugar, cotton and rice plantations. The slaves were forced to work in very harsh conditions including working in very hot marshy areas. they were affected by tropical diseases such as malaria which led to the death of several slaves. The number of enslaved populati on imported from Africa reduced in Chesapeake area, and in the Carolina Georgia low country. By 1750, the Chesapeake had the largest number of slaves in the mainland British America, but the majority of these slaves were American born or the Creoles. Slaves in Chesapeake enjoyed good working conditions with less exposure to subtropical diseases such as malaria and yellow fever (Edmund 111-112). Most of these Slaves were given permission by their slaveholders to have to choose their sex partners and subsequently give birth to children. Consequently the bearing of children naturally increased the number of slaves in this region leading to a reduction in number of slaves imported from Africa. Children worked with their parents in large plantations and lived with them in the slave cabins. This led to Creole slaves dominating this area (Allan 145-148). As the number of slaves imported from Africa reduced, the slave culture became more American. This led to the formation of African-Americ an communities in America. The whites less controlled these slaves. They were more exposed to the culture of the whites than those slaves from other regions. The American born slaves introduced Christianity on their traditional ceremonies such as emotional singing, and on death rituals (Edmund 111-112).Advertising Looking for essay on history? Let's see if we can help you! Get your first paper with 15% OFF Learn More The slaves combined their musical instruments with American musical instruments to develop songs that expressed had African rhythm All these led to the development of Africa-American communities in America. The slaves who were born in America developed African American culture out of slavery. The development of afro-American culture had a significant effect on the establishment of African American communities (Ira 112-115). The new African-American culture influenced children of the white who were put under the care of black servants on the plantations. Ma ny of the African practices, values, and beliefs were blended with white culture. African American traditions were evident in American literature and religion and in other fields. The African American culture developed to become a significant part of American culture. African American culture led to a transformative impact on the American culture, which developed, into African-American communities (Allan 145-148). The culture of African slaves who were born in America has greatly influenced the American culture. The African-American communities were developed out of the American born slaves in America. Works Cited Edmund, Morgan. American Slavery, American Freedom: The Ordeal of Colonial  Virginia. New York: Wiley, 1975. Print. Ira, Berlin. The First Two Centuries of Slavery in North America, Cambridge: Harvard University Press, 1998. Print. This essay on Slavery in America was written and submitted by user Emerald WildBoar to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

The History of Figure Skating and Ice Skates

The History of Figure Skating and Ice Skates Historians generally agree that ice skating, what we also today call figure skating, originated in  Europe several millennia ago, though its unclear when and where the first ice skates came into use. Ancient European Origins Archaeologists have been discovering ice skates made from bone throughout Northern Europe and Russia for years, leading scientists to posit that this method of transport was at one point not so much an activity as a necessity. A pair pulled  from the bottom of a lake in Switzerland, dated back to about 3000 B.C., are considered to be one of the oldest skates  ever found. They are made from the leg bones of large animals, with holes bored into each end of the bone into which leather straps were inserted and used to tie the skates to the foot. It is interesting to note that the  old Dutch word for skate is schenkel, which means leg bone. However, a 2008 study of northern European geography and terrain concluded that ice skates likely appeared first in Finland  over 4000 years ago.  This conclusion was based on the fact that, given the number of lakes in  Finland, its people would have had to invent a time-saving way to navigate across the country. Obviously, it would have saved precious time and energy to figure out a way to cross the lakes, rather than circumnavigate them. Metal Edged These early European skates didnt actually cut into the ice. Instead, users moved across the ice by gliding, rather than by what we have come to know as true skating. That came later, around the late 14th century, when the Dutch started sharpening the edges of their formerly flat-bottomed iron skates. This invention now made it possible to actually skate along the ice, and it made poles, which previously had been used to aid in propulsion and balance, obsolete. Skaters could now push and glide with their feet, a movement we still call the Dutch Roll. Ice Dancing The father of modern figure skating is Jackson Haines, an American skater, and dancer who in 1865 developed the two-plate, all-metal blade, which he tied directly to his boots. These allowed him to incorporate a host of ballet and dance moves into his skating- up until that point, most people could only go forward and backward and trace circles or figure eights. Once Haines added the first toe pick to skates in the 1870s, jumps now became possible for figure skaters. Today, increasingly spectacular leaps and bounds are one of the things that have made figure skating such a popular spectator sport, and one of the highlights of the Winter Olympic games. Sporting Developments  was developed in 1875 in Canada, although the first  mechanically refrigerated ice rink, named the Glaciarium, was built in 1876, at Chelsea, London, England, by John Gamgee.   The Dutch are also likely responsible for holding the first  skating competitions, however, the first official speed skating events were not held until 1863 in Oslo, Norway. The  Netherlands hosted the first World Championships in 1889, with teams from Russia, the United States, and England joining the Dutch. Speed skating made its Olympic debut at the winter games in 1924. In 1914, John E. Strauss, a blade maker from St. Paul, Minnesota, invented the  first closed-toe blade made from one piece of steel, making skates lighter and stronger. And, in 1949, Frank Zamboni trademarked the ice resurfacing machine that bears his name. The largest, man-made outdoor ice rink is the Fujikyu Highland Promenade Rink in Japan, built in  1967. It boasts an ice area of 165,750 square feet, the equivalent of 3.8 acres. It is still in use today.

Of Guns and Butter The Path of Arrogance Article

Of Guns and Butter The Path of Arrogance - Article Example Originally, the macroeconomic reference was â€Å"Guns or Butter?† meaning that society often has to choose between those two opposites: guns representing military-type goods, while butter represents civilian goods. It was clear throughout most of the decades of the mid-Twentieth Century that no country could have as much as it might desire of both guns and butter, as that would violate the concept of production possibilities based on limited economic resources. Therefore, every society has to pick and choose its products. Sometimes, the contrast is made between capital goods versus consumer goods, with the same conclusion: we cannot continually expand the production of both types of products and services without running grave economic risks. One of the most serious of those risks is that the monetary, fiscal, and liquidity policies needed to make us produce the maximum of both â€Å"guns and butter† will inevitably lead to hyperinflation, as this vast array of governme nt demands is added to existing and growing non-governmental demands for consumer and capital goods. As the Federal government, in particular, uses trillion-dollar deficit spending to finance its own purchases, running the monetary printing presses to cover those costs, the value of our money will inevitably decline. That decline is the essence of inflation, and it is likely to escalate as the overspending by all sectors of the economy continues and grows. As prices rise alarmingly, money will begin to become worthless, as happened in numerous countries which followed such policies in the past.