att t e s ie A few words on the history and future of surface chemistry For more than 400 years‚ important scientists and mathematicians like Leonardo da Vinci‚ Isaac Newton‚ Pierre Simon Laplace‚ Thomas Young‚ Siméon Denis Poisson‚ Josiah Willard Gibbs‚ Frederick M. Fowkes have done valuable pioneer work for the explanation of surface tension‚ capillarity‚ wetting and other interfacial problems. As a sector of physical chemistry‚ surface chemistry in connection with colloid chemistry established
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Surface Marking of the Lungs The apex of the lung extends upwards for one to two inches above the anterior extremity of the first rib‚ and is indicated by a curved line drawn from the upper border of the sterno-clavicular articulation to the junction of the inner and middle thirds of the clavicle‚ the highest part of the curve being from 1/2 inch to 1 1/2 inches above the clavicle. The apex of the right lung is 1/2 inch higher than that of the left. The subclavian artery lies on the cervical pleura covering
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Scheduled Areas and Tribal Areas : Scheduled Tribes live in contiguous areas unlike other communities. It is‚ therefore‚ much simpler to have an area-approach for development activities and also regulatory provisions to protect their interests. In order to protect the interests of Scheduled Tribes with regard to land alienation and other social factors‚ provisions of ‘‘Fifth Schedule" and ‘‘Sixth Schedule"have been enshrined in the Constitution. The Fifth Schedule under Article 244(1) of Constitution
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SUPERFINISHING EFFECTS ON HYPOID GEARS SURFACE FINISH AND TRANSMISSION ERRORS Jack Masseth ∗ Gear Design & Development‚ American Axle and Manufacturing Inc. 1840 Holbrook Ave.‚ Detroit‚ MI‚ USA ABSTRACT There are several geometric and working parameters‚ besides offset‚ that have minor effects on hypoid gears efficiency (i.e. spiral angle‚ pressure angle‚ lubricant type & temperature‚ surface finish‚ etc.). Some theoretical analyses of mechanical efficiency of hypoid gears show that surface finish has
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Lab Report Diffusion is - One of two kinds of passive transport‚ - Diffusion can transport ions from higher concentration to lower concentration region without any other forces. - A net movement of molecules in and out of cell membrane - Diffusion can be affected by the steepness of the concentration gradient. Lab question: Is the rate of diffusion influenced by the presence of second molecule? Prediction: the rate of diffusion is influenced by the presence of second molecule
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http://rebeccadouglas.photoshelter.com/image/I0000WDNZi_s2W4A Smarties Diffusion Experiment RESEARCH QUESTION How does changing the colour of smarties affect the extent of its passive diffusion? INTRODUCTION Passive diffusion‚ also known as simple diffusion‚ is used to describe the exergonic reaction of a substance where the substance passes in the direction of the concentration gradient. Most of the molecules move from the area of high concentration‚ inside the membrane of a cell‚ to the outside
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LA SALLE GREEN HILLS Comparative Study Between the Bioplastic Properties of Agar-Agar (Gelidium amansii) and Potato (Solanum tuberosum) Starch Submitted by: Kyle Emmanuel A. David Rynno Gabriel Luis T. Garde Justin Carlo P. Gregorio Rufo Angelo M. Mauricio III Christian Michael A. Perreras II-B Submitted to: Miss Alvie Diaz Submitted on: January 30‚ 2012 ABSTRACT Bioplastic is a form of plastic derived from renewable biomass
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Bio Lab Lab 6 Corn Syrup Aloe Vera Gel Time Blue Dye Red Dye Blue Dye Red Dye 10 sec 1 cm 1cm 1cm 1cm 20 sec 2cm 2cm 1.5cm 2cm 30 sec 2cm 1cm 1.5cm 2.5cm 40 sec 2cm .5cm 1.5cm 2.5cm 50 sec N/C .5cm N/C N/C Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 20.00mm 600mm/hr Red Dye 496g 45.00mm 1350mm/hr Aloe Vera Gel Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 15mm 450mm/hr Red Dye 496g 25mm
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and Diffusion Lab Report Background Information: Diffusion involves the movement of solute particles across a selectively permeable membrane from higher to lower concentrations. A selectively permeable membrane allows only some thing to go through. Water and oxygen are examples of molecules that are able to go through the membrane by diffusion. The
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Culture changes over time by acculturation‚ diffusion‚ and innovation; It spreads by religions and language. Culture develops‚ spreads‚ and changes over time. Innovation‚ diffusion‚ and acculturation are the processes of how culture is changing. Innovation is taking existing technology and resources and creating something new to meet a need. For example‚ to solve the need for storage goods‚ some societies invented baskets woven from reeds because reeds were abundant. Diffusion is the spread of
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