Investigate factors affecting cell membrane permeability in beetroot. Research Question: How does variation in temperature affect the permeability of cell membranes? Background Information: In this investigation I will want to identify how variations in temperature effect the permeability through the use of a beetroot. I predict that as the temperature of the water increases so will the dispersion of the pigment. Independent Variable: The temperature of water will be increased in increments of 10oC
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HVAC Systems: Air Conditioning Dr. Harjit Singh Room 116 Howell Building harjit.singh@brunel.ac.uk Fridays 09.30 – 11.30am Unless otherwise specified For students enquiries: 1 Building Services Engineering: Building Air Conditioning Module (ME5508)‚ Brunel University Introduction to the module • Credit: 15 • Teaching materials: – Provided for the MSc students. – Undergrads: Buy them from the stores. • Assignment: to be handed two weeks before Xmas‚ deadline-28 Jan 2013 • Students
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Discretization of the Domain Changing Differential Eqs. to Algebraic Eqs. Internal Nodes and Boundary Nodes Solving the system of Algebraic equations Example: Example: A chimney Inside: Convection Ti 300 oC ‚ hi 70 W/m 2 .o C Outside: Convection + Radiation TO 20 oC ‚ hO 21 W/m 2 .o C TO ‚ hO Tsky Tsky 260 K Inside Flow Section: 20 cm x 20 cm Wall Thickness: 20 cm TO ‚ hO Tsky Ti ‚ hi TO ‚ hO Tsky if x y 10 cm k 1.4 W/m. o C and 0.9 Using the
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E 10 B USEFUL TIPS for PAPER I 1. An E10B Exchange has 4 main blocks: The Connection unit‚ Switching Net work‚ Control units and Operation & Maintenance Centre. 2. Capacity: Number of Switching PCM links: 384 3. Processing capacity: 190‚000 BHCA 4. Traffic Handling capacity: 4‚000 Erlangs. 5. Maximum 45‚000 lines and 5000 circuits can be connected with one exchange. 6. System: Time Division Switching (TST Switch) PCM principle used
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The required amount of Pt‚ Pd and Ni nitrates precursor were immersed in deionised water. The precursor solution was dispersed drop wise to template. Finally‚ the obtained metals-doped templates were heated at 120 oC for 12 h. The resulting metals containing alumina-SDS templates was placed in horizontal furnace for the synthesis of metal and nitrogen doped templated carbons and followed same procedure as described in section 2.2 above. The metals (Pt‚ Pd & Ni)
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aldehyde isomer based on the melting point of the alcohol produced. Procedure(Please refer to the detailed instructions on lab 12 handout)Physical Quantity TableType of substanceMolecular FormulaMolecular Weight (g/mol)Density(g/cm3)Melting Point(oC)Boiling Point(oC)HazardO-vanillinC8H8O3152.15-42.5265-266Harmful andIrritantFor all 3vanillinC8H8O3152.151.05680-81285isovanillinC8H8O3152.15-113-115179Vanillyl alcohol*C8H10O3154.17-113-115--Sodium hydroxide**NaOH39.992.13181390CorrosiveHydrochloric acidHCl36
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Chapter 1 The Chemical World Chemistry a science that studies matter – its properties and changes. Matter is anything that has mass and takes up space. Matter is made up of atoms and molecules. Scientific Method Observation of nature → Hypothesis (possible explanation) → Experiments to confirm or revise hypothesis Many observations lead to scientific law – a statement of the relationship between different parts of nature. Ex: law of conservation of mass- “ matter is neither created or destroyed”
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EXPERIMENT 5 - Preparation of Acetanilide Preparation and purification of Acetanilide [pic] Purpose: a) To synthesis acetanilide by reaction of aniline and acetic anhydride. b) To purify acetanilide by crystallization method from water c) Purity check by melting range Equipment / Materials and Hazars: hot plate beakers(150‚250mL) ice stirring rod spatula Büchner
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Br 2‚3-dibromo-3-phenylpropanoic acid Br O OH CO2H H Br Br H Ph 2S‚3S CO2H Br H H Br Ph 2R‚3R CO2H Br H Br H Ph 2R‚3S H H CO2H Br Br Ph 2S‚3R Enantiomeric pair (threo) mp = 93.5-95 oC Another enantiomeric pair (erythro) mp = 202-204 oC Ph = Phenyl group In this experiment‚ you will brominates trans-‐cinnamic acid and determine the stereochemistry of the product
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basis for one‚ three ‚ or five year periods. • Occasionally spot charter market was used too. • Charterer paid a daily hire rate for entire duration. • They controlled where the cargo was loaded and unloaded and also determined the cargo. • OC Inc. supplied a qualified crew along Brief History • In 2003‚ the average daily operating costs amounted to $ 4000. • This cost increased annually at 1% due to inflation. • Charterers were not charged for days spent in maintenance and repair
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