basic or alkaline. Pure water has a pH very close to 7. The pH scale is logarithmic and as a result‚ each whole pH value below 7 is ten times more acidic than the next higher value. For example‚ pH 4 is ten times more acidic than pH 5 and 100 times (10 times 10) more acidic than pH 6. The same holds true for pH values above 7‚ each of which is ten times more alkaline than the next lower whole value. For example‚ pH 10 is ten times more alkaline than pH 9 and 100 times (10 times 10) more alkaline than
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established male rat model of gastroparesis model ( ). One of the important down steam signaling pathway of ROS is the activation of serine threonine kinase pathways p38 MAPK and JNK pathways. Oxidative medication and/or inactivation of MAP kinase phosphatase-1 (MKP-1) is the plausible mechanism for the activation of these pathways ( ). Our data demonstrate the following: (a) production of ROS in both diabetic and diabetic gastroparesis rats; (b) activation of both p38 MAPK and JNK pathways in diabetic
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GEOECOLOGY Describe and explain the characteristics of any one soil type you have studied. (2009 Q18‚ 80 marks) In this answer I will discuss the characteristics of the Brown Earth soil. Brown Earth soils are known as a zonal soil as they developed as a result of the Cool Temperate Oceanic climate and the natural‚ mixed‚ deciduous vegetation of this climatic region. This climatic region is located between 30o and 55o North of the Equator. Brown Earths are the most common soil type
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References: Websites Unknown. (2009). vegetation and soil. Available: http://www.yourclimateyourlife.org.uk/a_soil_types.html. Last accessed 12 Aug 2010. Unknown. (2010). Top Ten Herbaceous Perennials For Chalky / Alkaline Soils. Available: http://www.findmeplants.co.uk/plants-alkaline-soils.aspx. Last accessed 12 Aug 2010. Books David S.G. Thomas and Andrew Goudie (2004). The Dictionary of Physical Geography. 3rd ed. Oxford: Blackwell Publishing.
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Questions 1. Explain why it is necessary to warm the reaction mixture of aspirin and sodium hydroxide solution. It is to ensure that the alkaline hydrolysis is complete. 2. Explain why phenol red (or phenolphthalein) is used as the indicator in this experiment. After the hydrolysis of aspirin‚ the two salts formed are alkaline. Hence‚ an indicator with an alkaline pH range (6.8-8.4) is suitable for the titration. P.2 Experiment V02 An analysis of aspirin tablets Name:
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Year 12 Nutrition Stage 2 SACE: Practical – Manipulation of Microbial Growth | August 25 2013 Hypothesis: The hypothesis for this particular practical experiment is that‚ as the pH decreases or increases from neutral pH of approximately 7‚ the amount of microbial growth on the agar solution will decrease Materials: Agar Solution Preparation: *hand sanitizer/ hand wash soap *small container *1g of agar powder *0.25g of beef extract stock *60mL of heated water *electronic balance *small
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β-lactam inhibitors | Hypersensitivity Reactions: Rash‚ pruritus and fever have been reportedGastrointestinal Effects: melena‚ gastritisHepatic Effects: Transient increases in aspartate aminotransferase (AST)‚alanine aminotransferase(ALT)‚ alkaline phosphatase and bilirubin can occur.Renal Effects: Increases in serum concentrations of creatinine and blood urea nitrogen (BUN) may be observed.Effect on the Central Nervous System: Headache‚ MalaiseLocal Reactions: pain‚ inflammation‚ thrombophlebitis
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Laboratory Report The Plasma Membrane I. Introduction The Plasma membrane is the edge of life‚ the boundary that separates the cell from its surroundings. It controls the traffic of materials in and out of the cell. (Reece‚ 2011). It is incredibly thin that is very vital in maintaining the integrity of the cell. Not only does the plasma membrane bind the other organelles‚ it also forms a dynamic structure which gives them their remarkable activity and selectivity. (Hickman‚ 2008). Diffusion
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Many researchers have conducted studies in order to evaluate the influence of the electrochemical potential on the surface properties of pyrite leading to its depression. For example‚ Hicyilmaz et al. measured contact angles of pyrite in the absence of collector in a potential range of -505 to +595 mV vs. SHE. and observed that with increasing the pulp potential from +400 to +595 mV vs. SHE‚ the contact angles decreased. Also in another study conducted by Guler et al.‚ it was revealed that the floatability
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1. Paracrine signaling A) involves secreting cells acting on nearby target cells by discharging a local regulator into the extracellular fluid. B) requires nerve cells to release a neurotransmitter into the synapse. C) occurs only in paracrine yeast cells. D) has been found in plants but not animals. E) involves mating factors attaching to target cells and causing production of new paracrine cells. 2. Which of the following is true of synaptic signaling and hormonal signaling? A)
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