“Density of cells” means “the number of cells per unit volume of liquid”. For example, they might want to find out the density of red blood cells in blood plasma, the density of bacteria in milk, or the population of Paramecium sp. (a protozoan) in water from a pond. The simplest, most convenient and cheapest means of accurately determining the number of cells in a sample is to use a haemocytometer and a microscope. A haemocytometer is a specialised slide that has a counting chamber with a known volume
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Earthquakes I Earth’s composition Earth is a dense, stratified planet with many layers: core (inner and outer), mantle and crust Inner core: most dense material, solid iron and nickel Outer core: second most dense, liquid, iron and nickel Mantle: composed of oxygen, silicon, magnesium, aluminum Crust: composed of sodium and potassium rich silicate rocks Upper 100-350 km of upper mantle makes up asthenosphere: fluid layer due to heating from core Plate tectonics Earth’s uppermost layer, the
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saturated, and when the extremely above average rainfall came in the summer of 1993 came, the water had nowhere to go but to the rivers and streams. These rivers and streams quickly filled up and by July were cresting at record highs all around the Midwest. Near St. Louis the Mississippi river crested at 19 feet higher than the flood stage and over 6 feet higher than the previous record. With flood waters of that magnitude, levees were easily broken and overtopped. The great flood caused around 15
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1. Identify areas of environmental concerns. - Air pollution - Water pollution -Archeological/ cultural site damage -Threatened/ endangered species - Damage to vegetation 2. Identify mission-related environmental risks. - Accidents and breakdowns - Fuel and Hazardous Material Spills during refueling - Hazardous Material spills from vehicle maintenance - Digging in sensitive and restricted areas - Water pollution - Litter and debris -Erosion from vehicle maneuver damage -Oil and
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concentrate of soft drink from another company. • The company procures raw materials – bottles, sugar and water from outside. • The Production process is a Line form on the PP matrix A Soft Drink Bottling Company would have the following departments: 1.PURCHASE DEPARTMENT The purchase department is responsible for procurement of raw materials i.e. bottles, sugar, concentrate and water. The management of inventory of all these items and cost control are also the job of this department. They have
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because it was free admission but the weather conditions were not favorable as it was raining. Nevertheless, I paid for a general admission ticket that cost a whole $5 because I am a Chicago resident. This only gave me access to the Caribbean Reef, Waters of the World and Amazon Rising exhibits. The atmosphere inside this building was amazing due to curiosity of the wide age group. People were interested in the different types of reptiles and aquatic life and wanted to know more, so did I. The
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other obstructions and to submerge in water. AP&L recorded the easements, and anyone who purchased any of the lakeside property was aware of the flood easements. In May of 1990 heavy rains fell in the area, so reaching up to ten inches which casued the highest levels ever recorded. In order to avoid flooding Lake Hamilton AP&L decided to open the Carpenter dam gates. By opening the dam, Lake Catherine flooded and caused up to twenty-five feet of water to rise in some areas which caused extensive
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CHARACTERISTICS OF REFRIGERANTS Pure R-12 (CC 1425F425) is colorless. It is odorless in concentrations of less than 20 percent by volume in air. In higher concentrations, its odor resembles that of carbon tetrachloride. It has a boiling point of -21°F at atmospheric pressure. At ordinary temperatures under a pressure of approximately 70 psig to 75 psig, R-12 is liquid. Because of R-12’s low boiling point at atmospheric pressure, you must always protect your eyes from contact with
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during this pre monsoon time, there occur occasional heavy rains which cause serious damage to the crop. Before inventing techniques to overcome this problem, it is necessary to assess the losses due to water logging. Harmful effect of water logging on different physiological and yield attributes has been
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We started our excursion up Table Mountain, where we stopped at the Rhodes Memorial. From Rhodes Memorial the urbanization of Cape Town and the effects of urbanization on the land is very much evident. The acid sand plain was evident as well as the Malmesbury shale and the vegetation associated with it. It was clear that’s Rhodes Memorial itself was built from granite most likely situated in the area, the granite is situated along the table mountain and along Chapman’s Peak. The granite in some
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