Sammy Hassan Mrs. Droege Biology‚ 4B September 7‚ 2007 Surface Area to Volume Ratio S.Hassan‚ September 7. 2007 AISJ‚ Jeddah Saudi Arabia Surface area is known to be beneficial to keeping organisms alive it allows huge organs such as the intestines to fit in a small area by being coiled and packed together tightly. This experiment looked if the surface area to volume ratio affected the speed of a chemical reaction. For this experiment‚ a film container was filled one-half full with
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The Effect of Light Intensity The effect of different light wavelengths was tested in the following experiment. The rate of photosynthesis can be affected depending on the light treatment it receives. With the aid of DPIP acting as NADPH in photosynthesis‚ it was possible to observe the reaction as it took place. Samples were created with dark‚ 24 cm‚ 30 cm‚ and 49 cm light treatments. The absorbance was measured in five-minute intervals for each sample and recorded in an appropriate table
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What is Cochlear Damage? The cochlea is a tiny‚ snail-shaped structure. It is the main organ of hearing and is part of your inner ear. Cochlear Damage means that all or part of your inner ear has been hurt. Damage to the cochlea typically causes permanent hearing loss. This is called sensorineural hearing loss (SNHL). Many things can cause SNHL‚ or cochlear damage‚ including loud or extended noise exposure‚ certain powerful antibiotics‚ meningitis‚ Meniere’s disease‚ acoustic tumors‚ and even
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Resistivity of Copper Wire of Different Lengths In this report I will be writing about the experiment I will conduct on copper wire of different lengths. The dependent variable I will be measuring is the resistance of the Copper wire. To do this experiment‚ one needs to obtain measurements with a high degree of accuracy‚ taking care of the equipment they use and measuring each value to a certain degree of accuracy for all results. The problem with measuring the resistivity of Copper wire is due to
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Física da Radiação‚ 1º semestre‚ IST‚ 2010/2011 1 Radiopharmacology Radiopharmacology Diogo Ferreira‚ diogo.cunha.ferreira123@gmail.com MSc student in Biomedical Engineering‚ Instituto Superior Técnico‚ student no58548 Abstract Nuclear Medicine is the branch of medicine concerned with the use of radio-nuclides in the study and the diagnosis of diseases‚ eg. the assessment of organ function‚ detection and treatment of some diseases or monitoring of treatment’s effects. It provides physiological
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Abstract In this experiment‚ the Ksp for calcium sulfate dihydrate‚ CaSO4·2H2O‚ by titrating 4 times a calcium sulfate dihydrate solution with diprotic EDTA‚ H2(EDTA)2-. For each trial we found the Ksp by means of molarities and activities. The results for the Ksp using only molarities was very different than the Ksp using activities. The average Ksp using molarity only was 2.26 x 10-4 and the average Ksp using activity turned out to be 2.31 x 10-5. The actual Ksp however‚ is 3.14 x 10-5. A percent
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Rousselle Molina Ms.Moraima Group 2; HW 1 9-25-12 EVOLUTION; NATURAL SELECTION I.ABSTRACT: As we all know‚ evolution is a change in population over a period of time. Natural Selection as its own mechanism takes place for survival of the offspring from varying changes of the environment. One good example of natural selection is the population of peppered moth predominant in England. During pre-industrial revolution‚ there were highly significant light colored moths that
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Global Cosmetics Industry The cosmetics industry represents one of the most profitable and fast growing market segments in the United States in the past 50 years with cumulative sales of over $32 billion in 2005. The top players in the industry are L’Oreal followed by Procter & Gamble‚ Unilever‚ Shiseido‚ Johnson & Johnson‚ Avon‚ Revlon‚ Estee Lauder‚ Coty Inc‚ and Elizabeth Arden. The industry product categories are identified as cosmetics‚ hair care‚ skin care‚ sun care and perfume‚ which are
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Euthanasia and assisted suicide has become a strong subject on which all types of people have tried to find common ground and agree upon a decision. Most people argue in a sense of morals when I believe that this should be discussed based upon a set of basic ethics that most psychologists use now a days. If it is decided based mostly on morals then euthanasia will never become legalized. This essay is written based on a strong belief that Euthanasia and assisted suicide should be legalized. This
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Copper Sun is a novel by Sharon M. Draper about 15 year old Amari‚ whose village was taken over so she has to cope with the fact that her family is now gone. She also has to deal with the fact that she is being taken away from her true love. Throughout the story Amari displays many emotion‚ two major emotions are loneliness and bravery. Amari becomes very lonely when the fact that her parents and brother are dead becomes a reality. She still has Afi‚ who treats her like her own. On the very rough
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