Managing Water Supply Freshwater * Only 3% of the Earth’s water is fresh water‚ 97% is sea water. * Only 1% of the total amount of water is available for human use. Water as a scarce resource Reasons for scarcity: - Due to increasing demand as annual global use of water has increased 7 fold. -Uneven distribution of precipitation -Climate change leads to disturbances to water cycle - Deforestation leads to higher surface runoff which causes less clean water. - Poor or improper farming practices
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• Wet Rot • Dry Rot • Subsidence/heave • Thermal expansion • Woodworm • Architectural acoustics • Damp(structural) • Efflorescence/sub-florescence • Chemical attack • Freeze/thaw action • Failure under load • Splitting (wood) • Condensation • Fire spread • Fracture WET ROT The first building defect we will be looking at is dry rot and wet rot. Wet rot is a fungal attack on wood that can have serious affects if it is not taken care of properly. Wet rot is dry rot that is after
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be forced to rise up the sides of mountains and high grounds towards which the wind is blowing..The consequent expansion and cooling of the air again leads to the formation of stratus type cloud if the ascent of the air is sufficient to cause condensation. Rain‚Snow and Hail If the cooling process which gives rise to cloud formation is continued the droplets of which the cloud grow in size until they become too heavy to remain suspended in the air and they therefore fall to the ground as very
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Experiment 6: Microbial Cultivation Objectives: To successfully cultivate microorganisms from different sources to medium. Materials: Broth‚ Agar‚ Sterilized cotton swab‚ Procedure: 1) Get your broth with cotton swab inside containing your bacteria. 2) Remove the cotton and flame sterilize the mouth of the testtube. 3) Get your cotton swab inside‚ flame sterilize again the mouth of the testtube then plug it with cotton. 4) Grab the inverted plated media and flame sterilize the
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Vast quantities of water also cycle through the Earth ’s atmosphere‚ oceans‚ land‚ and biosphere over both short and long time scales. This grand cycling of water is called the hydrologic cycle. Precipitation‚ evaporation‚ freezing and melting and condensation are all part of the hydrological cycle - a never-ending global process of water circulation from clouds to land‚ to the ocean‚ and back to the clouds. This cycling of water is intimately linked with energy exchanges among the atmosphere‚ ocean
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DESIGN OF A HEATING ELEMENT FOR INDIRECT HEATING A REPORT SUBMITTED IN THE PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE COMPLETION OF MAJOR PROJECT WORK Project Report By: Kamalpreet Singh (753/08) University Roll No.: 80801114047 Submitted by: Submitted to: Kamalpreet Singh Dr. J.S Oberoi College Roll No: 753/08 Project Coordinator Univ. Roll No: 80801114047 Department of Mechanical Engineering Dept.
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happens to the ethene molecule during this process. c) The mechanism of addition polymerisation consists of three steps. Name each step and give a brief description of each. 5. a) What is condensation polymerisation? b) Where is condensation polymerisation used? 6. Read the following passage and answer the questions that follow: Over the past few decades‚ the use of synthetic polymers in disposable consumer goods has grown tremendously
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questions Common exam questions include: 1. Name the reaction involved when a disaccharide is formed 2. Name the type of bond formed 3. Show‚ by drawing a diagram‚ how a disaccharide is formed Questions 1 and 2 are very simple - Disaccharides form in a condensation reaction which forms a glycosidic bond. The only way to get Question 3 correct is to practice! Fig 1 shows how maltose and sucrose are formed from their monosaccharides. Fig 1. Formation of maltose and sucrose from their
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H2O hydrolysis reactions: ionic or covalent bond‚ splits larger molecules into smaller ones‚ breaks down water carbohydrates are made up of covalent bonds 1:2:1 ratio of C H and O monosaccharide example: ribose disaccharides are joined by condensation disaccharide example: lactose (glucose & galactose) and sucrose (glucose &
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conceivably from a proximate supernova‚ under its own gravity force‚ this cloud of gas and dust began to condense‚ or shrink together. At first‚ the condensation was slow‚ but the speed started to increase as more material was being pulled towards the middle of the nebula. Eventually‚ this made gravity get stronger‚ making the process of condensation faster (Msnucleus
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