BOILER FUNCTION a closed vessel in which a liquid (usually water) is heated under pressure to generate a gas (usually steam) CLASSIFIED TO: HIGH PRESSURE: constructed to operate above the limits set for low-pressure boilers‚ and are typically used for power generation. LOW PRESSURE: limited to a maximum working pressure of 15 psig (pound-force per square inch gauge) for steam and 160 psig for hot water A boiler is a closed vessel in which water or other fluid is heated
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Plants and humans are perhaps the most important organisms‚ however‚ us humans‚ have caused the death of thousands of plants by starting fires and by cutting down trees for things such as paper and furniture. Plants make oxygen which is very important for our survival; we can’t live without it. In the year 2003 alone‚ 774500 acres of land‚ that contained not only threes but animals too‚ were burned in California (Jane Strong‚ 2003). Some of this land was burned due to natural fires but some of it
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Over 100 million animals are injured and killed each year due to the horrible effects of animal testing. Although all animals feel the same emotions as humans‚ such as feeling happy‚ sad‚ scared and even lonely. Scientists see animals other than the daily house house pet simply as mere tools for their experiments. Animals from mice to monkeys have intelligence and deserve to be loved and cared for just as much as an other animal. whether it be a pet or an endangered species. Many processes and procedures
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Some of the most bizarre and fascinating plants in the natural world are undoubtedly carnivorous plants. Carnivory‚ defined as the consumption of animal tissue‚ is often only associated with the animal kingdom. However the existence of carnivory is widespread and diverse in the plant and fungi kingdoms as well. Specifically carnivorous plants‚ which originally descended from exclusively photosynthetic plants‚ have evolved elaborate‚ efficient‚ and diverse methods to capture‚ digest‚ and metabolize
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Problem Set 1 Solutions: Chapters 1 1 Cell sizes: E. coli is a cylindrical bacteria with 1 M wide and 2 M long. Liver cells are approximately spherical with a diameter of 20 M. Plant palisade cells are cylinders 20 M wide and 35 M long. A) Calculate the volumes of each cells? A) Since E.Coli is cylindrical Volume of a cylinder = r2h‚ where r is half of bacterial width/diameter = 1M/2 = 0.5M and h is the length of the bacteria
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What is intensive plant production? Well it is formally known as intensive agriculture. It is an ‘Agricultural production system characterised by the high inputs of capital or labour relative to land area’ [http://www.uwa.edu.au/__data/assets/pdf_file/0009/92619/Yan_PPS_Workshop.pdf]. It mainly focuses on produces with the highest amount of value. Around the world‚ intensive agriculture is needed and in the entire generality of agriculture‚ intensive agriculture takes up about 37%‚ specialising in
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BIO-GAS PLANT: SUBSTITUTE TO LPG COOKING GAS 5th February 2012 Objective: Waste is a material that no longer serves a purpose and so is thrown away. In some cases what one person discards may be re-used by somebody else. All wastes is particularly hazardous. If not carefully disposed of‚ it will have an impact on the environment‚ whether it be unsightly litter in urban streets or contaminated air‚ soil or water. But what is equally important about waste is that it is recyclable. For example‚
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determination in plants Summary- Evolutionary transitions happened gradually from hermaphroditism to monoec in which multiple sex determining genes are involved which include male-sterility and female-sterility factors. There should not be any recombination between different loci which is the pivotal reason for the genetic degeneration of Y chromosomes. There are several theories attached to Y chromosome degeneration that are reviewed recently . Introduction: why are plant sex chromosomes of
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reactions must take place for the substances of photosynthesis to be transported around the plant. energy is supplied to plant cells through respiration movement of substances occurs by diffusion‚ osmosis and active transport. Water and mineral ions must be supplied and conserved in the plant. cell wall makes plants have no mobility cell wall bring turgor pressure. Turgor pressure increased in ‘woody plants’ - with lignin. photosynthesis - is the process whereby radiant energy from the sun is
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Mutualistic relationship of young desert plants and nurse plants. By: Anthony J. Johnston University of Arizona Abstract- The project being presented is on the association of desert plant life with nurse plants. It is said that desert plant life such as C. Gigantea‚ Ferocactus Wislizeni‚ and Ambrosia Deltoidea‚ associate themselves with other large nurse plants for protection‚ and other resources. Results showed that there was no random association of this hypothesis; therefore the null hypothesis
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