country’s total forest is damaged by air pollution. This included about one half of the famous Black Forest. Switzerland has recorded damage to 14 % of its forest trees. In this experiment‚ I will find out what consequences acid rain has on the germination and subsequent growth of cress seedlings. I will use cress seedlings‚ which germinate quickly and can grow a few centimetres in a matter of days and sodium metabisulphite‚ which reacts slowly with water to produce sulphur dioxide gas. The seedlings
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Curiosity: What is the effect of temperature of saline on cardiac output? HYPOTHESIS: Cardiac output is higher in a hot saline and low in cold saline temperature parameters. Educated Guess Answer: Phenomenally cardiac output is supposed to rise in hot saline conditions and drastically go down in cold saline conditions. Normalising Data Table 2.1: Cardiac output normalised data of frogs in normal‚ hot and cold saline conditions Normal Hot Cold FROG SV(mV/beat) HR(beat/min) Cardiac output(L/min)
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Examination Timetables for 2013 Printed copies of your examination timetable‚ as displayed in myUnisa‚ will be accepted at Examination Venues together with identification documents. To print a copy: 1. Go to your "My Admin" site 2. Click on the link for "Examination Timetable" 3. Ensure that your mouse cursor has identified the correct part of the page (frame) 4. Click on the print function/icon of your Internet browser It is very important that you pay special attention to the dates and times
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the experiment is to investigate the effect the salinity of solutions has on the process of osmosis and net weight gain/ loss by potato cells. This would be done by using similar size potato cubes and covering them with different concentrations of saline solutions (0.5% and 2.0%) in beakers then measuring the change in weight of the potato cubes. If the salinity of the solution is high then the weight of the potato cubes will decrease. Materials • 9 X 2cm2 potato cubes • 3 X
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Introduction: The world’s total forest area is just over 4 billion hectares‚ which corresponds to an average of 0.6 ha per capita (Figure 1). The five most forest-rich countries (the Russian Federation‚ Brazil‚ Canada‚ the United States of America and China) account for more than half of the total forest area. Deforestation – mainly the conversion of tropical forest to agricultural land – shows signs of decreasing in several countries. Around 13 million hectares of forest were converted to
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Saline Salt Company Analysis The Saline Salt Company production process was simple. Their process involved extracting salt from six tanks of 900‚000 cubic feet of seawater which could only be held on a large plot of land. As land becomes more valuable and rarer‚ expansion of the existing method becomes very difficult. Saline Salt Company could not compete with other companies that were producing larger amounts of salt in shorter amounts of time. Saline Salt Company did not expand as the needs
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Earthworm Smooth Muscle In this experiment‚ contractions of the earthworm gut are measured in an organ bath with a force transducer. The effect of neurotransmitters and ionic concentrations on contraction strength and rate will be investigated. Written by staff of ADInstruments With acknowledgement to: Dr. Stuart I. Cromarty‚ Department of Natural Sciences‚ Assumption College‚ Worcester‚ MA‚ USA. [pic] Background Smooth muscle is one of three muscle fiber types found in animals. Unlike
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of the outer membrane of a red onion react when deionized water‚ a 1%‚ and a 10% saline solution are added to the cells? Hypothesis: If a saline solution is added to the outer membrane of a red onion cell‚ then based on the amount of the solution‚ it will cause the vacuole inside the cell to become hypertonic thus shrinking in size. This is because water moves from inside the vacuole‚ to the cell since the saline solution is entering the vacuole. While if deionized water is added on to cell‚
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patency of arterial and central venous lines by preventing these occlusions. Its use‚ however is not without risks such as hypersensitivity reactions and heparin-induced thrombocytopenia. Recent studies suggest that non-heparinized solutions‚ such as saline‚ may be as effective in maintaining catheter patency. A recent heparin shortage allowed examination of heparin effectiveness in reducing CVAD thrombosis. Many studies have been performed during periods when heparin flushes
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(55) 91354085 EDUCATION: Federal University of Santa Maria‚ Santa Maria‚ RS‚ Brazil Bachelor of Science in Forest Engineering‚ March 2013 THESIS: “Moisture content evaluation in germination and health of seeds of Parapiptadenia rigida (Benth.) Brenan” This study addresses the effect of moisture content over germination and incidence of plant pathogens‚ such as fungus and bacterium‚ in seeds of Angico put to germinate. PRACTICAL EXPERIENCE: Laboratory Researcher‚ Pharmacognosy Laboratory‚ Department
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