w w ap eP m e tr .X w Paper 3 Practical Test CONFIDENTIAL INSTRUCTIONS 5070/03 May/June 2004 Great care should be taken that any confidential information given does not reach the candidates either directly or indirectly. INSTRUCTIONS TO SUPERVISORS Teachers responsible for the examination are NOT allowed to consult the question paper before the day of the examination. However‚ they are asked to carry out a titration between solutions P and Q‚ to ensure that the concentrations
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Sibande ‚ activates the human form by playing with hair‚ fabrics and her own body in the process of her artworks. She chooses these mediums to explore the construction of identity in an African context. I experiment with the materials milk bottles‚ polystyrene and wire as part of my journey. Mary Sibande’s Conversations with Madam CJ Walker ‚ (Figure 1)‚depicts the artist serving a portrait of Madam CJ Walker. CJ walker is the pioneer who brought black artificial hair into the South African market. The
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history was mainly in the chemicals industry. Having started in 1901 as a manufacturer of saccharin; by the 1970’s Monsanto was involved in businesses with oil/gas exploration‚ the production of acetic acid‚ plastics‚ synthetic rubber‚ resins‚ polystyrene‚ polyethylene‚ insulation‚ flame retardant materials‚ and Astroturf. In 1978‚ agriculture and food processing together accounted for just 17 per cent of the company’s sales. Nowadays‚ Monsanto is one of the world’s largest seed companies. Although
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The Academy Graduate Studies‚ Benghazi. Term Paper for Maintenance Management Course Titled: Impact of Maintenance Activities on the Environment. Prepared By: Haitham Hashem 4657. Farage Shem 4465. Supervised By: Prof. Dr. Farage Elfeituri. Contents Introduction 3 How Can Maintenance Affect the Environment? 4 Limitation of Environmental impact in maintenance operations 4 I. Evaluation of Environmental aspects in maintenance 4 II. Environmental aspects to be considered
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Biochemistry Unit The Kinetics of Alkali Phosphatase Inhibition 1. OVERVIEW This practical builds on the enzymology lab skills you learned in the Acid Phosphatase practical. Again‚ you will measure the initial reaction velocity (V 0) of an enzyme reaction‚ but this time in the absence and then presence of an inhibitor. Last time you used Acid Phosphatase (Prac 1)‚ but this time you will use the enzyme Alkali Phosphatase. These enzymes have different primary (and hence tertiary) structures
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Essay ozone depletion is a serious problem presently facing the world. The ozone layer protects humans‚ animals‚ and plants from harmful ultraviolet rays. Money and time are being spent on ozone repair‚ but the problem still exists. The ozone layer is a region of the stratosphere containing ozone‚ or O3 gas. The ozone layer is necessary to both plant and animal life on earth because it protects the surface from dangerous ultraviolet light. However‚ manufacturing and household chemicals
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Solutions to Plastic Pollution in our Oceans The Basics We ’re treating the oceans like a trash bin: around 80 percent of marine litter originates on land‚ and most of that is plastic. Plastic that pollutes our oceans and waterways has severe impacts on our environment and our economy. Seabirds‚ whales‚ sea turtles and other marine life are eating marine plastic pollution and dying from choking‚ intestinal blockage and starvation. Scientists are investigating the long-term impacts of toxic pollutants
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isolated from fresh agar plates were inoculated in 10 mL of trypticase soy broth with 1% glucose. Broths were incubated at 370C for 24 hours. The cultures were then diluted 1:100 with fresh medium. Individual wells of sterile 96 well-flat bottom polystyrene tissue culture treated plates (Sigma-Aldrich‚ Costar‚ USA) were filled with 200 µL of the diluted cultures. The control organisms were also incubated‚ diluted and added to tissue culture plate. Negative control wells contained inoculated sterile
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TAP 601-1: Brownian motion Brownian motion (named after the botanist Robert Brown) is the presumably random drifting of particles suspended in a fluid (a liquid or a gas) or the mathematical model used to describe such random movements‚ which is often called a particle theory. The experiment of Brownian motion in a smoke cell is a classic experiment that gives strong circumstantial evidence for the particulate nature of air. Materials: ✓ Smoke cell‚ incorporating a light source
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The Los Altos City is located at the South end of the San Francisco Peninsula‚ in the San Francisco South Bay Area; its exact situation is in Santa Clara County‚ California. Overview Los Altos is an affluent commuter community; its residents live in the city‚ although they commute to their places of work. The community is upscale‚ and the residential area encompassed with beautiful greenery and large mature trees. The city follows a green space layout; it designates its commercial activities
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