Yersinia pestis bacteria may form different types of the plague; bubonic‚ septicemic‚ and pneumonic. The bubonic plague is the most common form of yersinia pestis that attacks and infects the lymphatic system of the organisms‚ once resulting to one-third to one-half of the Europeans population wiped out in the year 1347. The lymphatic system works closely with the immune system‚ therefore the bacteria is incredibly harmful for the whole body. (http://www.ukessays.co.uk/essays/biology/bubonic-plague
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The Essay The speech ‘Funeral Service of the Unknown Australian Soldier’ by former Prime Minister Paul Keating has been chosen as the basis of this commentary. It was given on 11th of November 1993 at the Australian War Memorial in Canberra as a commemoration in honour of all of the soldiers who have served for Australia in conflict situations. Paul Keating’s point of view is evidently reflected through his speech. He aims to bring about the development of Australia as a unified nation by the instilling
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Spectrophotometric determination of Ascorbic acid Concentration in an Unknown Solution Introduction: The naturally occurring organic compound with antioxidant properties is Ascorbic acid shortly referred as (AA). Normally the color of Ascorbic acid is white‚ but in some cases of impure samples it appears yellow in color. Ascorbic acid is solid in state. In water it dissolves well to give mildly acidic solutions. Ascorbic acid is one form ("vitamer") of vitamin C [1]. So‚ Ascorbic Acid (AA)
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1. Obtain 1 gram of an impure‚ unknown substance solid. Make sure to stir the mixture before measuring the sample; record the mixture’s code in the data section. 2. Add approx. 25-50 mL of water and several boiling chips to a 125 mL Erlenmeyer flask and heat the water to a gentle boil using a hotplate. 3. On a second hotplate‚ place a 125 mL Erlenmeyer flask containing the one gram of unknown solid along with a boiling chip. 4. Using a ring clamp‚ slowly pour approx. 5-10 mL of boiling water into
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Lab: Flame Test Purpose: to determine the ID of 2 unknown substances Background Information: Every atom consists of a nucleus with tiny electrons whizzing around it. The further away from the nucleus they are‚ the more energy the electrons have. If a metal atom is heated‚ the electrons get enough energy to jump higher away from the nucleus‚ they become “excited”. When they fall back closer to the nucleus (back to their ground state)‚ they give off this extra energy as light. Why is the
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A Report of Experiment 1 Purification and Identification of An Unknown Mixture Aim To separate a mixture of a neutral (ester‚ alcohol‚ ketone‚ aldehyde or ether) and an acidic compound (phenol or carboxylic acid) or a neutral and a basic compound (amine)‚ and to identify the unknown mixture by physical (M.P. or B.P.) and spectroscopic methods (NMR‚ IR and MS). Method The mixture (sample number: 27) was dissolved in 200 mL of CH2Cl2 and then extracted with 10% NaOH. The acid was removed
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Identification of Unknown Carbohydrates using various biochemical tests Date of experiment: 11/10/2012 Name of Student: Vicki Marshall Introduction A series of biochemical tests was carried out to identify unknown carbohydrates. There were six carbohydrates that needed to be identified; they have been randomly labelled A-F. The carbohydrates are glucose‚ fructose‚ maltose‚ lactose‚ sucrose and starch. There was six tests that were carried out to help identify them‚ these were: Iodine Test
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Jeramie Janine B. Rellora Geol 1 - THV 2008-17299 Prof. Mario Aurelio Tuesday March 06‚ 2012 Negros Quake‚ Disaster from the Unknown: A Reflection Paper When I first heard about the news from my older sister regarding of what had happened in the Northern part of Negros‚ I was surprised to know that there was actually no particular fault line declared and suspected before in the said affected area. In point of fact‚ before I read the article of my Professor in my
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Isolation and identification of pathogenic bacteria associated with frozen mackerel fish (Scomber scombrus) in a humid tropical environment Eze‚ E. I. 1 ‚ Echezona‚ B. C. 1 * and Uzodinma‚ E. C. 2 1 Department of Crop Science‚ University of Nigeria‚ Nsukka‚ Nigeria. 2 Department of Science Laboratory Technology‚ University of Nigeria‚ Nsukka‚ Nigeria. Accepted 8 January‚ 2010 Aquaculture products can harbour pathogenic bacteria which are part of the natural micro-flora of the environment. An in-vitro
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WOMAN UNKNOWN- Rabindranath Tagore **************************************************************** By P. Baburaj‚ Senior Lecturer‚ Dept. of English‚ Sherubtse college‚ Bhutan Author of: Language and writing‚ DSB Publication Thimphu Communicative English‚ P. K. Books‚ Calicut A perception on Literary Criticism‚ P.K. Books‚ Calicut ****************************************************************** First person narrative. A 27 year old man namely Anupam who is immersed in Indian tradition and
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