Thursday, January 30, 2020
Green Computing Essay Example for Free
Green Computing Essay Green computing or green IT, refers to environmentally sustainable computing or IT. It is the study and practice of designing, manufacturing, using, and disposing of computers, servers, and associated subsystemsââ¬âsuch as monitors, printers, storage devices, and networking and communications systemsââ¬âefficiently and effectively with minimal or no impact on the environment. Green IT also strives to achieve economic viability and improved system performance and use, while abiding by our social and ethical responsibilities. Thus, green IT includes the dimensions of environmental sustainability, the economics of energy efficiency, and the total cost of ownership, which includes the cost of disposal and recycling is the study and practice of using computing resources efficiently. To comprehensively and effectively address the environmental impacts of computing/IT, we must adopt a holistic approach and make the entire IT lifecycle greener by addressing environmental sustainability along the following four complementary paths: â⬠¢Green use reducing the energy consumption of computers and other information systems as well as using them in an environmentally sound manner
Wednesday, January 22, 2020
The Changes of Canadian Children Since the 1800s Essay examples -- Ca
The Changes of Canadian Children Since the 1800's à The world has experienced many changes in past generations, to the present. One of the very most important changes in life had to be the changes of children. Historians have worked a great deal on childrenââ¬â¢s lives in the past. ââ¬Å"While we try to teach our children all about life, our children teach us what life is all about.â⬠- Author Unknown Children were strong and ambitious. They were the money makers of the family. This paper will argue how the mindset of a child has advanced in Canada, through the 1800s to the present era, in representing a different perspective of how a child evaluates the perception of how they approach life. Canada holds many histories of the past. The differences with children from to the past to the present are that children worked and produced a lot of labor, to keep the families from starving through the 1800s, present children rarely need to work. The educational system of the past has differed a great deal from the system they have created thought out the times that have developed. Children would use their imagination to create games and play, until the generation of television came into effect. Times have changed and children are one of the many. The social construction of childhood from the 1800s is a whole lot different from the construction of childhood from the 1970s. The agenda of chil dren have changed and adults are not concerned with children working because the standard of living in families has developed a whole new concept, for how families should live life. à à à à à The childhood of the past has changed through many eras of time. The labor work of children is not needed in a great deal no more. The 1800s was a time of labor for children. Families would have more children than now, because without a child many families could not survive. Children were needed to bring home money and feed the family. The girls were used to do the chores around the house, while the boys were used to do outside work, like cut wood. Children were influenced to do labor. They would not believe in an education, both rural and urban children. Through the industrialization children started working in family farms or in small workshops. Boys and girls would find work at mines or large factories. Children were seen as the important economic survivals to their families. By the 1890s, Canada ... ...om starving. The educational system of the past had differed a lot from the system they have created for the present. Children would use their imaginations, until the generation of television had came into effect. The children have experienced many changes. And childhood will always be a different story to tell for generations to come. Bibliography MLA Format Prochner, L. & Howe, N. (2000). Early Childhood Care and Education in Canada. Vancouver & Toronto: UBC Press. Sutherland, N. (1997). Growing Up: Childhood in English from the Great War to the Age of Television. Toronto: University of Toronto Press Incorporated. Sutherland, N. (1978). Children in English-Canadian Society. Toronto: University of Toronto Press Incorporated. Parr, J. (1982). Childhood and Family in Canadian History. Toronto: McClelland & Stewart Limited. Ashworth, M. (1993). Children of the Canadian Mosaic: A Brief History to 1950. Toronto: The Ontario Institute for Studies in Education. Parr, J. & Janovicek, N. (2003). Histories of Canadian Children and Youth. Canada: Oxford University Press. Ishwaran, K. (1979). Childhood and Adolescence in Canada. Canada: Mcgraw-Hill Ryerson Limited.
Tuesday, January 14, 2020
Bacterial Staining
Certain stains can also be used to identify internal structures of the cell, which would otherwise be unseen. Further, in order to use the oil immersion objective of the microscope and thereby obtain the iratest degree of magnification, it is convenient to use stained preparations rather than wet mounts. L Although bacteria do not appear greatly different from their surroundings, they differ chemically. It is this chemical difference that enables us to distinguish bacteria by staining, the stain or dye readily reacting with the bacterial cell but not with the background. Preparation of Smear Before Staining (figure 1) 1. Prepare a clean slide. Put a proper label. 2. Heat your loop to sterilize it. 3. For solid media: 0 Using a sterile inoculating loop, place a 1 or 2 loophole of distilled water on the enter of the slide. 0 Scrape a small amount of the culture off the slant. 0 Smear on the center of the slide, with the distilled water, the scraped material. For liquid media: 0 Make a smear from the broth. You don't have to add water as the bacteria are already suspended in water. Use 2 or 3 loophole of the culture. 0 Spread the culture on the center of the slide. 4. Reheat the loop to clean it. 5. Let the smear dry. ââ¬â air dry ââ¬â heat fix- passing the slide through a flame 2 or 3 times Figure 1. Preparation of smear. Classification of Stain Based on Functions 1. Simple Staining Method ââ¬â In this method one aniline dye is used to stain the organism to be studied. 2. Differential Staining Method ââ¬â Under this type of classification, the staining method employed divides the microorganism into groups.The Gram's Staining Method and Acid-Fast (Zilch-Nielsen Method) fall under this category. 3. Selective or Special Staining Method ââ¬â Under this category, parts or portion of the cell are stained differently from the rest of the cell. 4. Indirect Staining Method ââ¬â Indirect stains are also relief stains because it is the background whi ch takes up the taint, not the organism and the organism are only seem by contrast. 2 Examples of Staining Simple Staining Methods Use only 1 stain. Use to determine cell morphology, size and arrangement.Procedure: a. Make a smear. B. Staining: 1. Place the slide on a staining rack. 2. Flood the smear with several drops of the dye, allow it to remain for the following intervals: ââ¬â Carbon-fuchsia ââ¬â 15 to 30 seconds ââ¬â Methyl Blue ââ¬â 2 to 5 minutes ââ¬â Crystal violet ââ¬â 30 to 45 seconds 3. Carefully wash the excess stain off with distilled water from a wash bottle. Let the water run down the tilted slide. 4. Gently blot the smear with a paper towel or absorbent paper and let it dry. C. View the prepared slide under the microscope. Results and reaction: Reaction / Results Principle Samples of Bacteria All bacteria in smear takes stain Simple stains use basic dyes All types of and appears in color of stain which are positively bacteria. Charged. Thes e positive dyes 0 Shape: interact with the slightly 0 Spherical ââ¬â coca negatively charged bacterial 0 Rod ââ¬â bacilli cell wall thus lending the color 0 Arrangement : of the dye to the cell wall. 0 Coca in clusters ââ¬â staphylococci 0 Coca in chains ââ¬â thyrotrophic 2. A.Gram's Stains most common technique the gram stain is valid only when performed on young (less than 24 hours old) cultures of bacteria Procedure:l b. Gram staining: Steps Purpose 1. Use a clothespin or slide rack to hold the slide. 3 2. Cover the smear with crystal violet and leave for 30 seconds. 3. Wash the slide carefully with distilled water from a wash bottle. O do not squirt the water directly Primary stain ââ¬â all bacteria are stained purple. Onto the smear 4. Without drying, cover the smear with Gram's iodine for 30 seconds. 5.Without washing, decolonize with 95% ethyl alcohol. Let the alcohol run through the smear until no large amount of purple wash out. O do not over decolonize 6. Immediately wash with distilled water. 7. Add seafaring for 30 seconds. Mordant ââ¬â this intensifies the ionic bond between the primary stain and the Primary stain is washed out of some bacteria, while others are unaffected. Secondary stain or countersink ââ¬â stains the decolonize bacteria red. 8. Wash with distilled water and blot the slide with a paper towel or absorbent paper. Let dry. C. Examine under the microscope. 9.Results: Reactions / Result Gram cell wall are thick and chemically costive (+) simple, composed mainly of 0 purple protein and cross-linked colored minicomputers ââ¬â alcohol causes dehydration and shrinkage of the gram+ cell wall ââ¬â reducing the loss of substances such as crystal violet Aggregative (-) 0 pink wall is a thin, complex, multilayered structure containing protein, minicomputers and lipids ââ¬â when treated with alcohol, the lipid dissolves and the primary stain is wash out Samples of Bacteria Gram positive coca in clusters (figure AAA): Staphylococci species Gram positive bacilli (figure ad): Colostomies species Crematoriums Bacillus anthracicGram negative coca in chains: ââ¬â Streptococci Gram negative coca (figure 4 ââ¬â Engineers species Gram negative bacilli (figure c): ââ¬â Escherichia coli ââ¬â Kielbasa pneumonia b d Figure 2. Different observations in Gram's Staining. (a)gram+ coca in clusters (b)gram + coca in chains (c)gram- bacilli (d)gram+ bacilli (e)gram- coca. (f)gram stain mixed 5 B. Acid ââ¬â Fast Stain (Zilch ââ¬â Nielsen Stain)l ,5 0 to stain Mycobacterium species especially M. Tuberculosis ââ¬â Contain large amount of fatty waxes (mycology acid) within their cell wall resists staining by ordinary methods 0 Procedure: 1. Flood smear with Carbon Fuchsia Carbon Fuchsia is a lipid soluble, stain. Heinlein compound, which is able to penetrate the cell wall. 2. Cover flooded smear with filter paper 3. Steam for 10 minutes. Add more Carbon Fuchsia stain as needed . 4. Cool slide. 5. Rinse with distilled water. 6. Flood slide with acid alcohol (leave 15 The waxy cell wall then prevents the seconds). The acid alcohol contains stain from being removed by the acid 3% HCI and 95% ethanol or H2O alcohol (decolonize) once it has SIS. Penetrated the cell wall. The acid alcohol decolonize will remove the stain from all other cells. . Tilt slide 45 degrees over the sink and add acid alcohol drop wise (drop by drop) until the red color stops streaming from the smear. 8. Rinse with distilled water
Monday, January 6, 2020
Literature Review On Civil War And Genocide - 2049 Words
2. Literature Review In the completion of this research project research a wide variety of literatures will be reviewed. Broadly, the focus will be on violence including civil wars and genocide, and the international communityââ¬â¢s response to violence, focusing both on the theory that unpins response and then more specifically on UN missions and their effectiveness. The literature on violence does not form a cohesive body, rather, for each form of violence there is a distinct literature, and often these literatures do not cross pollinate. For the interest of this literature review a brief review of the literatures available on civil war and genocide will be considered, followed by a brief review of the literature on the response to conflict by the UN. Civil War One thing that the literature on civil war agrees upon, is that there is much disagreement on what civil war is. Amalendu Misra (2008) begins his book Politics of Civil Wars by demonstrating the amount of discord within the academic community on the topic; he provides numerous similar yet different definitions or civil wars over the years and outlines numerous criteria that differ civil wars from other types of violence that may occur within a country, such as coup dââ¬â¢Ã ©tatââ¬â¢s or revenge killings. Misra notes that due to the varied perspectives ââ¬Å"there exists a mà ©lange of interpretations on the nature and character of civil war there is no commonly agreed position. Given this complexity it is hard to suggest oneShow MoreRelatedThe Conflict Of Syria During The Arab Spring Protests1147 Words à |à 5 PagesConflict in Syria There are war crimes being committed in Syria. The conflict started during 2011 Arab Spring protests. The country has been crippled by a brutal civil war ever since. The violence has reached terrifying proportions. 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The international communityââ¬â¢s instruments that have been designed in the wake of the genocide and atrocities in Rwanda and Bosnia in the 1990s, to prevent the outbreak of violent conflict or end fighting have remain unwieldy and, at times, ineffectiv e (Cramer 2006). As a consequence, many fragile states (which are also the most vulnerable)
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