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The Elements and Health Benefits of Potassium - ... The Discovery website explains electrolysis as “the process in which a chemical is broken down into its component chemicals using electricity. It involves submerging two metal electrodes into a liquid or molten substance that contains positive and negative ions” (“Discovery”, 1). Electrolysis is also the most common way to purify potassium and was invented by Sr. Humphry Davy in 1807 along with his first discovery of potassium. Thermal purification uses heat to isolate the potassium. In the process, creating a reaction between metallic sodium and molten potassium chloride at 850 degrees Celsius purifies potassium....   [tags: atomic number, forms, chemistry]
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Potassium - Potassium Potassium is a vital element in the human body. Potassium had never been distinguished between sodium until the eighteenth century. Before potassium was recognized as an element, potassium carbonate was mixed with animal fat to make soap. It was discovered by Sir Humphrey Davy in England, in 1807. Sir Davy was able to isolate potassium using electrolysis. Potassium was the first metal isolated by this procedure. Today, it is still not found free in nature. It is obtained by electrolysis of chloride or hydroxide....   [tags: essays research papers fc]
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Effect of aggregation status on soil Potassium in Illitic - ... Khormali, F., Ajami, M. 2011. Pedogenetic investigation of soil degradation on a deforested loess hillslope of Golestan Province, Northern Iran. Geoderma 168: 274–283 Marshal, T. J., Holmes, J. w. 1992. Soil physics. Great Britain: Cambridge university press. p. 374. Movahedi, S. A. R., Rezaie, M. 2009. Soil physics, Fundamental and applications. Gorgan, Iran: Gorgan University of Agriculture sciences and natural resources publications series. p. 445 (In Persian). Najjar, Y. M., Basheer, I. A....   [tags: NaBPh4,minerals, golestan district]
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1065 words
(3 pages)
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History, Mechanics, and Safety Concerns of Gold Potassium Cyanide - From King Midas’ greed to the treasure of the Incas, gold is easily the most widely treasured metal known throughout history. Nearly every culture or group has placed heavy inherent value on it and includes it in their lore. Even the name for gold was graciously thought out and applied. It is derived from the word “geolo”, the Old English word for “yellow”. The periodic symbol for gold, Au, is from the Latin word aurum, “glowing dawn” . Its uses are both, immeasurable and prehistoric. However, its use in the electrodeposition process, the main discussion in this paper, has only been dated back to roughly 1850....   [tags: Metal, Elements, Electroplating]
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1139 words
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The Solubility of Potassium Nitrate - The Solubility of Potassium Nitrate Aim To investigate how the solubility of Potassium Nitrate is affected by Temperature. Background Knowledge Potassium Nitrate (KNO3) is an ionic compound. The strong ionic bonds hold the compound in an ionic lattice which gives KNO3 its crystalline structure. These ionic bonds also have other properties which will affect my investigation, I must be aware of these properties for greater accuracy in my method. The ionic bonds give KNO3 high melting and boiling temperatures....   [tags: Papers] 1245 words
(3.6 pages)
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Solubility of Potassium Chlorate - Solubility of Potassium Chlorate Solubility is the maximum amount of solid that will dissolve in 100g of solvent. The solubility of a substance depends on the type of ionic particles in it. So the solubility of each substance is different. The formula of solubility is: SOLUBILITY(g/100g)= (SOLUTE / SOLVENT) * 100 I did an experiment to prove this and find the solubility of potassium chlorate, an ionic solid. Apparatus: 2g potassium chlorates, some distilled water, a stand, a clamp, two beakers, a thermometer, a test tube, and a measuring cylinder....   [tags: Papers] 686 words
(2 pages)
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Investigating the Standard Enthalpy of Potassium Nitrate - Investigating the Standard Enthalpy of Potassium Nitrate Stability --------- Stable. Strong oxidizer - contact with combustible material may cause fire. Incompatible with combustible materials, and strong reducing agents. Toxicology ---------- Harmful if swallowed. May cause reproductive disorders. ------------------------------------------------------- Hazard: oxidizing ----------------- Aim The aim of this experiment is to determine the crystallisation temperature of the solution potassium nitrate at different concentrations and use information to find out the standard enthalpy of potassium nitrate....   [tags: Papers] 1413 words
(4 pages)
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Chemistry: Percent Composition Lab Introduction - Percent Composition Lab Introduction The percentage of something is very important in everyday life. For example, a farmer would want to know the percentage of nutrients in a fertilizer they are using. In spring, the farmer may want to use a fertilizer that has a high percentage of nitrogen, because it "greens” plants. In the fall, the farmer may want to use a fertilizer that has a higher percentage of potassium, because it strengthens the root systems of plants. A way to find the percentage of nutrients is by using percent composition....   [tags: fertilizer, potassium, molar mass]
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1206 words
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A Stoichiometry Experiment Involving Potassium Chlorate - Introduction In any science that requires computation, specifically in Chemistry, gathering measurements of various physical and chemical properties need to be strictly accurate and precise for it is in this most crucial phase that either make or break the quality and value of science. No matter how good the experiment was performed, without forethought on how to gather and process data correctly, the collected information would not be reliable enough to draw out a conclusion on it. This experiment is divided into two parts, thus having dipartite objectives for the whole experiment....   [tags: Chemistry] 1258 words
(3.6 pages)
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Percent Composition by Mass of Oxygen in Potassium Chlorate - % Composition By Mass of Oxygen in Potassium Chlorate Objective: The purpose of this lab was to calculate the percent composition by mass of oxygen in potassium chlorate. Procedure: 1.The mass of the crucible and the cover was measured. 2.KClO3 was added to the crucible. 3.The mass of the crucible, cover and KClO3 was measured. 4.MnO2 was added in the crucible. 5.The mass of the crucible, cover, KClO3 and MnO2 was measured. 6.The Bunsen Burner was lit. 7.The covered crucible was placed over the flame of the Bunsen Burner using a ring stand....   [tags: Chemistry] 359 words
(1 pages)
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Lab Report on Volumetric Determination of Iron with Potassium Permanganate - Lab Report on Volumetric Determination of Iron with Potassium Permanganate Principle: This experiment consists of titrating the ferrous ion with permanganate ion to study the oxidation-reduction reaction. The ions react in acidic solution to give ferric ion and a reduced ionic form of manganese. All the reactants and products except permanganate ion are weakly colored, whereas permanganate is a very intensely colored ion. Then a solution of permanganate is removed as long as there is a ferrous ion present to react with it....   [tags: Papers] 455 words
(1.3 pages)
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Comparing the Solubility's of Copper Sulphate, Sodium Chloride and Potassium Nitrate - Comparing the Solubility's of Copper Sulphate, Sodium Chloride and Potassium Nitrate Comparing the solubility's of copper sulphate, sodium chloride and potassium nitrate Background Information Molecular solids (sugar) and ionic solids (salts) both dissolve in water. However, they both dissolve in different ways. The intermolecular forces holding molecules of sugar together are relatively weak so when sugar is placed in water these bonds are broken and individual C12H22O11 molecules are released into solution....   [tags: Papers] 968 words
(2.8 pages)
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Experiment Proving Lambert-Eaton Syndrome (LES) Patients Potassium Channels Conduct Electrical Current - In order to understand Lambert-Eaton Syndrome (LES), it is first necessary to have a general understanding of the nervous system. The human nervous system is composed of the central nervous system (CNS), which consists of the brain and spinal cord, and the peripheral nervous system (PNS), which includes all the neural tissue outside the CNS. PNS is composed of two basic types of neurons (nerve cells): motor neurons and sensory neurons. Motor neurons, the target of LES, are used to send signals from the CNS to the body to stimulate a reaction....   [tags: Biology Central Nervous System Lambert Eaton] 2671 words
(7.6 pages)
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Disturbances of Acid-Base Balance - Disturbances of Acid-Base Balance If an acid-base disturbance shifts the pH outside of the physiologic range, various control measures are activated to resist the change in pH. Compensatory mechanisms try to preserve the normal 20:1 ratio of bicarbonate to carbonic acid to keep the pH at normal range. The body works to maintain normal ratios through a compensation mechanism using renal and respiratory methods (Crowley, 2010). Metabolic Alkalosis Metabolic alkalosis is seen by an increase in the concentration of plasma bicarbonate relative to the concentration of carbonic acid, which shifts the pH to the alkaline side of the physiologic range (case study- pH 7.5)....   [tags: Scientific Research ]
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1098 words
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The Harcourt Essen Experiment - The Harcourt Essen Experiment The aim of this investigation is to: 1) find the rate equation for the reaction between hydrogen peroxide, potassium iodide and sulphuric acid by using the iodine stop clock method and plotting graphs of 1/time against concentration for each variable. Then to find the activation energy by carrying out the experiment at different temperatures using constant amounts of each reactant and then by plotting a graph of in 1/t against I/T, 3) to deduce as much information about the mechanism as possible from the rate equation....   [tags: Chemistry, Science, Experiment] 1470 words
(4.2 pages)
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The Importance of Electrolyte Balance - Maintaining proper levels of anything in your body is important for your body to function appropriately. Electrolytes are electrically charged minerals, negative or positive, and run throughout the body’s fluids, blood, and urine. The major electrolytes of the body are Na+ (sodium), K+ (potassium), Cl– (chloride), Ca2+ (calcium), H+ (hydrogen), HCO3– (bicarbonate), and phosphates; these electrolytes can be found in the food and drinks we consume everyday. They are responsible for many body processes such as the transport of water and other fluids within the body, muscle activity, and even metabolism to name a few....   [tags: anatomy, body function]
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966 words
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Low Sodium Intake Prevents Hypertension - ... (4) analyzed data from the National Health and Nutrition Examination Survey (NHANES) and measured the association between sodium and potassium intake on blood pressure and the development of hypertension. Researchers analyzed data on 10,563 of participants whose age was 20 and greater from the 2005-2010 NHANES. Zhang Z. et al. used NHANES as their data source, which uses a stratified, multistage probability cluster sampling design in order to create a large non-biased sample pool of long term subjects to study important nutritional data....   [tags: blood pressure, cardiovascular disease]
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1052 words
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BioChemistry - Questons an Answers - 1. Fully explain the role of ATP in the sodium potassium pump. Sodium potassium pump is a primary active type of cell transport where in it pumps ions against the concentration gradient. In the human cell, sodium and potassium are essential ions in maintaining normal fluid volume moreover it is an important ions that maintains the function of excitable cells such as nerve and muscles cells in transmitting impulses or contracting the muscles. The mechanism is that the sodium potassium pump pumps potassium ions from outside the cells to the inside of the cell while at the same time it pumps sodium ions from inside to outside the cell....   [tags: BioChemistry, Queston/Answer] 2055 words
(5.9 pages)
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Family Members Should NOT Decide When Life Support is Needed - Should the decision to keep a person on life support be made by family members only. This question has major impact on many people’s lives, their deaths, and their quality of life. Many other questions can be asked in conjunction with this question. How would you like to be kept on life support. Would you want a doctor to make the decision of ‘life or death’. The questions just keep on coming, and every time we seem to find ourselves divided. This issue is relevant because of the recent media coverage over Terri Schiavo’s right to live or die and the fact that any of us could be in her situation....   [tags: Life Support Essays]
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Analysis of the Genetically-Based Autosomal Recessive Disease, Bartter Syndrome, and Possible Methods of Diagnosis and Treatment - Introduction to Bartter Syndrome Bartter syndrome is a rare autosomal recessive disease, which results from defective proteins in the thick ascending limb (TAL) within the loop of Henle in the kidney. The TAL is an important part of the nephron because it contributes to the ion concentration within the urine. It has impermeability to water and reabsorption abilities specific for sodium chloride [16]. Physical indicators for this syndrome can include dehydration, constipation, weakness, and fatigue [3]....   [tags: Defective Proteins, Cochlear Implants]
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2156 words
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Bioassays in Relation to the Growth and Colouration of Tomato Seedlings - Bioassays in Relation to the Growth and Colouration of Tomato Seedlings Abstract: The objective of the experimental research was to assess how bioassays affect the plant growth, colouration and overall appearance of the plant. To set the experiment up thirty-nine plants were required. Plants were watered with different concentrations of potassium chloride, manganese chloride and copper chloride and compared to the results of the plants being watered with distilled water. Measurements of the plants were taken almost every day to ensure accuracy....   [tags: Scientific Research ]
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2304 words
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Mutations in KCNQ1 Ion Channel May Cause Jervell and Lange-Nielsen Syndrome - Mutations in KCNQ1 Ion Channel May Cause Jervell and Lange-Nielsen Syndrome Abstract Jervell and Lange-Nielsen Syndrome is a human disorder that causes deafness and an irregular heartbeat. It is caused by a mutation in a protein that is a potassium ion channel. The mutations lead to a protein that does not serve the purpose it was designed to serve. It is difficult to treat, but there are things that can be done for both the cardiac and auditory aspects of it. Implantation of a device used as a sort of bionic ear can be used as treatment for the deafness characteristic of JLNS....   [tags: Biology Mutation]
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Superior Flexor Muscle Cells - Effects of Extracellular Potassium Concentration on Membrane Potentials in Crayfish Superior Flexor Muscle Cells Intracellular measurement of membrane potentials in cells of the crayfish superficial flexor muscle can reveal the effects of varying the extracellular concentrations of potassium ion on the resting potential. Our results suggest that at high extracellular potassium concentrations, the resting potential resembles that of the potassium’s equilibrium potential, and at low potassium concentrations, resting potential is less related to potassium equilibrium potential....   [tags: Biology Essays Research Papers] 870 words
(2.5 pages)
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Investigating the Thermal Decomposition Of Metal Carbonates - Investigating the Thermal Decomposition Of Metal Carbonates Aim: To investigate a range of metal carbonates and see if they thermally decompose. Thermal Decomposition INVESTIGATION [IMAGE] ------- Written By Tauqir Sharif ------------------------ Research: When a metal is thermally decomposed the bond between the metal and its carbonate (carbon and oxygen) is removed and the carbonate is released as carbon dioxide. Metal Carbonate = Metal Oxide + Carbon Dioxide Malachite is an ore of copper....   [tags: Papers] 2469 words
(7.1 pages)
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Mineral Composition of Seaweed - The mineral composition of three groups of seaweed under study is shown in Table 3. As an illustration, most of the seaweeds showed high value of Potassium, Magnesium and Iron, but low in Copper and Cobalt that is coincided to those estimated by Krishnaiah et al. (2008), but significantly higher with those results reported by Rupérez (2002). Among minerals, Potassium occurred in the highest proportions in all seaweeds (515.6±35.7-876.6±15.9 mg/100g) which are significantly lower than those results obtained by Matanjun et al., (2009) (8371.2±0.0-13155.2±1.1 mg/100g).The highest content of potassium was detected for brown algae and red algae....   [tags: science experiments,] 631 words
(1.8 pages)
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The Importance of Fruit in a Well-Balanced Diet - An apple a day keeps the doctors away. Is that cliché really that far off. Actually, no; that statement holds truth. Everybody knows the importance of fruit as a part of a well-balanced diet, but most people do not know just how good fruit is for health. Not only does fruit aid in good physical health, but it also provides benefits for good mental health. Fruit makes weight loss more efficient and heightens brain functions. Eating a healthy amount of fruit improves the ability for the body to lose weight....   [tags: Nutrition]
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The Functions of Osmosis - The Functions of Osmosis Osmosis is the passive transport of water through a selectively permeable membrane, a membrane that allows certain needed particles to pass through it more easily than others. Pores in this type of membrane are large enough for water to pass effortlessly through it. The flow of water during osmosis depends on the concentration of a solute either within a cell membrane or surrounding the membrane. Water naturally flows from a hypertonic solution, an area of high concentration of solute, to a hypotonic district, a solution containing a lower concentration of solute....   [tags: Papers] 635 words
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Investigating the Optimum pH Bacterial and Mammalian Amylase Digests Starch Solution - Investigating the Optimum pH Bacterial and Mammalian Amylase Digests Starch Solution [IMAGE] Biology Coursework Monique Noel 12T Finding the Optimum pH Bacterial and Mammalian Amylase Digests Starch Solution. Introduction I am investigating the optimum pH bacterial and mammalian amylase digests starch solution. To do this I will conduct an experiment using bacterial and mammalian amylase, subjecting them to varying pH levels and record at which pH level the enzyme digests starch solution most efficiently....   [tags: Papers] 1242 words
(3.5 pages)
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The Problem of Dehydration - In many ways, any living being is the product of water. The figures are relevant for this assumption: the human body contains 60% water. A newborn has at birth 64% water in his organism while the fetus in the third month of pregnancy has in his tissues, 91% water. As a man ages he starts to dry: around the age of 70, the body contains 46% water. The body is composed of 25% solids and 75% liquid material in which the solvent is water. Furthermore, even the brain tissue is composed of 85% water (Wedro, Conrad Stöppler, 2011)....   [tags: Health ]
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The K+ Channel Revisited - The K+ Channel Revisited Many scientists enter the field of neuroscience with a desire to understand how the human brain functions to create our actions. Some take a large approach and study reactions to stimulus in live animals. This approach leaves us still wanting to know about things that aren't a result of an outside stimulus. Other scientists take the minimalist approach and start by studying the exact mechanisms of individual cells of the brain. But, what good does that do us for everyday life....   [tags: Chemical Neuroscience Chemistry Papers]
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Sources Of Electrolytes: Which Drink Provides More Electrolytes - ... Some individuals are considered salty sweaters, meaning the sodium concentration of their sweat is higher than average. This amount is typically determined by genetic predisposition, diet, and sweat rate. It is important to note that dehydration can increase the sweat concentration of sodium and potassium. There is no recommendation for electrolyte intake before exercise. However, salty sweaters should eat a salty snack or drink a sports drink instead of water for pre-exercise hydration. The sodium in sports drinks helps the body absorb and retain the fluid and utilize the carbohydrate....   [tags: gatorade, orange juice, sport drinks]
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The Nervous Systems - The processes of communication between distinct tissues and organs Among various types of organ systems, the nervous system is one of the most important one in human body. It is responsible for producing, controlling and guiding our thoughts and responses to the world around us according to James W. Pennebaker (2012). During embryological development, the cells that form nervous system are incredibly specialised and work complexly than the cells that form skin or other body parts. Neurosecretory cells are one of the examples of specialised nervous system cells that produce neurosecretions....   [tags: anatomy, nervous system]
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Health Problems and Your Food - Human bodies are naturally created to break down simple foods. As a growing population we have had to create technology that keeps up with the demand for food. In generating this technology we have created food that our bodies are not fully capable of breaking down without having some sort of negative health effect. The food industry uses thousands of chemicals and additives to preserve our food and our bodies are fighting back. Nitrates and nitrites are used in preserving meats and can cause numerous health problems that most of us are not aware of....   [tags: Nutrition ]
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The Importance of Ion Channels - Oculocutaneous albinism is the lack of color in an individual skin hair and eyes. This is a condition that exists from birth. This a The Importance of Ion Channels: An Analysis of the Long QT Syndrome Inheritance method Long QT Syndrome (LQTS) is an uncommon congenital heart condition in which patients affected by this syndrome are at high risks for cardiac arrest and sudden cardiac death due to mutations in cardiac ion channels (Crotti et al., 2008). There are two particular variants to the Long QT Syndrome; one is called the Jervell and Lange-Nielsen Syndrome (J-LN), which is associated with deafness, and the other has been named the Romano-Ward Syndrome (R-W), in which there is no conne...   [tags: Disease, Disorders]
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Inhibitory Or Excitatory Potential Changes - Inhibitory Or Excitatory Potential Changes Graded potentials can be either hyperpolarizations (inhibitory) or depolarizations (excitatory). Inhibitory postsynaptic potential, also referred to as IPSP, is the temporary hyperpolarization of a membrane. An inhibitory postsynaptic potential occurs when synaptic input selectively opens the gates for potassium ions to exit the cell (carrying a positive charge with them) or for the chloride ions to enter the cell (carrying a negative charge with them)....   [tags: Biology Biological Papers]
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Chemicals Tests for Anions in Various Salts - Chemicals Tests for Anions in Various Salts APPARATUS Spatula Test tubes and racks Pipettes Chemicals used Hydrochloric acid Nitric acid solution Barium chloride (harmful) Silver nitrate solution Metal salts used for testing Potassium chloride (KCI) Iron chloride (FECI3) Sodium sulphate (NASO4) Calcium carbonate (CACO3) Lead carbonate (PBCO3) Tap water RISK ASSESMENT Potassium chloride Explosive when mixed with combustion materials....   [tags: Papers] 497 words
(1.4 pages)
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The Importance of Degradation in the Fate of Selected Organic Compounds in the Environment - ... In spite of that, this method merely suitable for sewage sample with Cl- concentration less than 250 mg/L. In 2009, Geerdink et al. have developed mercury free COD method based on the COD dichromate international standard method (ISO 15705 and ISO 6060). They modified the standard methods by obviating the application of mercury, avoiding the Cl- influence by precipitation with silver ions and lowering the digestion temperature to 120 oC. Silver sulfate was applied as a precipitating agent for Cl- as well as a catalyst for oxidation process....   [tags: waste water, organic substances, anion exchange]
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The Application of Critical Thinking to the Terri Schiavo Case - The fifteen year battle over the life of Terri Schiavo dominated popular culture in the early 1990’s until her death in 2005. The heated court cases that were to decide this woman’s fate caused a deep fissure to form between her husband Michael Schiavo and her family, the Schindler’s. This decade and a half crusade was propagated by intuitive Christian mind set of the Schindler’s and their supporters as they presented no evidence to support their claim that Terri was living in a broken body besides anecdotal information....   [tags: Case Review ]
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Synthesis and Characterization of K2[Ni(CN)4] , K3[Fe(C2O4)3] and Cu(acac)2 Complexes - ... A small amount of the sample was dissolved in water and the UV-Vis spectrum was obtained When the acetyl acetone was neutralised with 0.5 ml diluted ammonia, precipitate immediately formed when the ammonia was added to the acetyl acetone. When the acetyl acetone solution was added to the Cu solution a purple pastel colour was obtained when filtered. As this precipitate was recrystallized with ethanol it turned to a darker purple. As this solution was filtered and dried, dark purple-blue crystals were obtained....   [tags: Lab Report]
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Effect of Fertilizer on the Wisconsin Fast Plants - ... Minerals are what helps the plants grow. Photosynthesis is a stage of growth, so adding fertilizer to a malnourished plant would help photosynthesis. If fertilizer wasn’t that important, famers wouldn’t be using it. It used to take quite a while to get all the fresh fruit and vegetables in the store. But now the crops grow quicker and healthier. Fertilizer is a big part of agriculture history. It also has an effect on the fast plants. The fertilizer helps it grow faster, making the life span even shorter than what it was originally....   [tags: Science Experiment, Fertilizer]
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Efficacy of Gatorade vs Water in Rehydration - It has long been established that both short and long-term exercise increase metabolic rate and heat production. This naturally predisposes participants to dehydration. Typical symptoms of dehydration include elevated temperature, fluid and electrolyte imbalance due to sweating, and loss of critical nutrients, such as glycogen (depleted via metabolic pathways). Many individuals participating in moderate to rigorous training schedules may engage in daily exercise, if not multiple exercise routines in one day (3,4,5,6)....   [tags: dehydration, electrolyte, carbohydrate, recovery]
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The Pathophysiology of Acute Renal Failure - Explain the pathophysiology of acute renal failure. Include prerenal, intrarenal and postrenal causes. The pathophysiology of acute renal failure takes place when the kidney no longer works properly. Prerenal causes of acute kidney failure are a lack of prefusion to the kidney. The primary cause of prerenal is ischemia, or inadequate blood flow to the kidney. This lack of perfusion leads to renal failure. Some causes of prerenal acute renal failure can include blood lose or dehydration. Intrarenal causes are damage to the kidney....   [tags: Disease ]
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Understanding Atherosclerosis and Tips for Prevention - Atherosclerosis is a disease of the body’s arteries. When plaques from fat, cholesterol, calcium and other substances build up in our arteries, which carry oxygenated blood to the heart and other parts of the body, the pathways to vital organs become narrow or blocked – this is known as Atherosclerosis. Just as plaque build up on our teeth can lead to the gum disease gingivitis, plaque build up in our arteries can lead to atherosclerosis, but with our teeth we can usually see if there is a build up of plaque just by looking in the mirror....   [tags: arteries, blood, blood pressure, healthy diet] 836 words
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Lab Report Using a Chemical Titration to Measure Rate of Conversion of Hydrogen Peroxide to Water and Oxygen - Lab Report Using a Chemical Titration to Measure Rate of Conversion of Hydrogen Peroxide to Water and Oxygen Overview: In this laboratory you will use a chemical titration to measure and then calculate the rate of conversion of hydrogen peroxide (HO) to water and oxygen using the enzyme catalase. Objectives: Before doing this exercise, you should understand: Ø the general functions and activities of enzymes Ø the relationship between the structure and function of enzymes Ø the concept of initial reaction rates of enzymes Ø how the concept of free energy relates to enzyme activity Ø that changes in temperature, pH, enzyme concentration, and substrate concentration can affect the initial re...   [tags: Papers] 1829 words
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Investigating Into the Possible Existence of Distribution of Stomata Within Different Leaf Types - Investigating Into the Possible Existence of Distribution of Stomata Within Different Leaf Types The aim of my particular experiment was to investigate into the possible existence of distribution of stomata within different leaf types. My investigation also requires me to research into the rate of transpiration into the different leaf types and if this has an effect of the distribution of stomata on the leaves surface. Prediction I predict that the environment of which I found my particular leaf type had an effect on the stomata distribution in my particular leaf type....   [tags: Papers] 3941 words
(11.3 pages)
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Basic Physiology of a Neuron and How it Fires - Basic Physiology of a Neuron and How it Fires Describe the basic physiology of a neuron. Detail the manner by which neurons fire action potentials and how neurons communicate with one another across synapses. Outline the process of how an action petential occurs and hoe it propagates down an axon. Explain how chemical transmission occurs at synapses and how this allows neurons to activate of inhibit one another. [Picture from "Answer to Neuron Structure"] Neurons are the basic units of the brain....   [tags: Papers] 722 words
(2.1 pages)
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Methods of dating Basaltic rocks - ... This radioactive isotope is known as Potassium-40 which undergoes radioactive decay to form more a more stable Argon-40(Micheal.A.S, 1991). The age of a rock can then be determined by chemical analysis of the amount of Potassium-40 present and the amount of Argon-40 present. Adding these two values gives the original quantity of Potassium-40. Using this value the age of the rock can be determined mathematically on the basis of the half-life of Potassium-40(how many years it takes for the amount of Potassium-40 to halve in quantity)....   [tags: mafic rocks, volcanoes ]
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Inhibitory or Excitatory Potential Changes - Inhibitory or Excitatory Potential Changes Risperidone is a serotonin antagonist which blocks GABA-evoked currents in pyramidal neurons (Feng et al, 2001). Risperidone lengthens action potentials and blocks potassium current in rabbit heart muscle. In human atrial muscle risperidone decreases outward current but has no effect on inward current. It lengthens the repolarization of atrial and ventricular action potentials only at high drug levels. Risperidone reduces the membrane resting potential and prolongs action potential duration....   [tags: Drugs Psychology Psychiatry Medical Essays]
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The Field of Medicine - Introduction One among the fields that have profited from the rapid technological progress in the previous centuries is the field of medicine. Conditions and Diseases that scientists had trouble in understanding and curing are now cured successfully and with virtual ease. More people as well as the incurably-ill now survive longer than before. Development in the global population has been distinguished in the 20th century. The old and young population has increased pressure on medical care resources internationally with the intention that no nation is currently capable to compete with the demand for medical -care and its supply....   [tags: Medical Care, Treatment] 1563 words
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Investigating Which Metal Combination Gives Out the Most Voltage in a Solution - Investigating Which Metal Combination Gives Out the Most Voltage in a Solution Background Metals are an order of chemical elements in the periodic table. They are arranged in atomic number. All of them are solid (apart from mercury), good thermal and electrical conductors and are shiny when polished. Metals and non - metals are separated in the table by a diagonal line. -------------------------------------------------------------------- The reactivity series is a table to show which metals are most reactive to the least reactive....   [tags: Papers] 919 words
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How Various Mechanisms By Which Substances Cross The Cell Me - Homeostasis is essential to the cell’s survival. The cell membrane is responsible for homeostasis. The membrane has a selective permeability which means what moves in and out of the cell is regulated. Amino acids, sugars, oxygen, sodium, and potassium are examples of substances that enter the cell. Waste products and carbon dioxide are removed from the cell. All of these substances cross the membrane in a variety of ways. From diffusion and osmosis, to active transport the traffic through the cell membrane is regulated....   [tags: essays research papers] 882 words
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Charles Darwin's Theory of Evolution by Natural Selection - Evolution. Is it a fact or fiction. Darwin’s theory has had a great impact on the world today. It has caused many debates between religious authorities and those from the scientific community. This theory prompted individuals to think about the origin of life in the universe. What distinguishes Charles Darwin from the others is the fact that he collected and provided substantial evidences and he related various branches of science such as geology, botany and biology, which helped, validate his theories....   [tags: Natural Selection, Evolution Essays]
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The Effect of a Healthy Lifestyle on Aging - The Effect of a Healthy Lifestyle on Aging Lifestyle is an important predictor of 'How well a person ages'. Important factors such as eating right and exercising regularly are major components of a healthy lifestyle that play an important role on how long a person can live. The focus of this research is to explain the relationship between aging and the food you eat, how often you exercise , and your mental state . Finally it will focus on different ways of maintaining a decent lifestyle in order to live longer and happier....   [tags: Papers Diet Health Exercise Old Essays]
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Nutrition: A Key to Success in Sports - Nutrition: A Key to Success in Sports Certain foods can make a difference in sports competition. Conditioning, strength, and speed have been the focal points of athletic training for years; however, the research on nutritional elements indicates their importance to an athlete's optimal performance. Knowing the proper food to eat before, during, and after a physical activity can help an athlete in achieving their desired performance. The most important nutrient categories are starches, minerals, sugars, and electrolytes....   [tags: Health Nutrition Pyramid Diet] 880 words
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Anorexia and Bulimia - ANOREXIA Anorexia or other wise know as Anorexia Nervosa, is a condition characterized by fear of gaining weight or becoming obese, as well as a distorted body image or in other words, someone who thinks that they are fat when they are probably already too thin. Such a distorted image can lead to an excessive weight loss from stopping food intake and or excessive exercise. Anorexia nervosa is not associated with any preexisting physical illness. It is found in teens and young adults, but especially young women....   [tags: Causes of Bulimia, Eating Disorders] 362 words
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Decomposing Hydrogen Peroxide - Introduction The purpose of this experiment is to gain an understanding of factors which influence the rates of reactions. Several experiments will be conducted using various combinations of concentrations of the reactant (hydrogen peroxide) and a catalyst (potassium iodide), as well as one pairing in which a change in temperature is the only variable. Data collected will be used to determine the rate law, rate constant, and activation energy for each of the reactions Hydrogen peroxide (H_2 O_2) naturally decomposes into water (H_2 O) and oxygen gas (O_(2 )) according to the following balanced equation....   [tags: Chemistry]
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Acid-Base Chemistry Lab - The purpose of this lab was to determine the pH and total acidity of grape juice and wine. A second purpose was to experimentally determine the pKa of a monoprotic weak acid, polyprotic weak acid, as well as, a free amino acid, alanine. Acids and bases were defined by Bronsted-Lowry in 1923, in which acids were described as substances capable of donating a proton and bases are substances capable of accepting a proton (Thompson and Dinh 2009). In addition to defining acids and bases, Bronsted-Lowry further classified acids and bases as being either strong or weak....   [tags: Scientific Research ]
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Acute Renal Failure - Acute renal failure (ARF) is a common syndrome which causes a rapid decline in glomerular filtration, homeostasis, disturbance of fluid volume, and accumulation of nitrogenous waste which the kidneys are unable to excrete. Acute renal failure is usually asymptomatic and normally diagnosed when standard laboratory tests show a sudden rise in blood creatinine and urea. A patient who develops acute renal failure will recover in most cases. When the nephron is compromised, it is unable to perform the many functions required of it....   [tags: Disease/Disorders]
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Osmosis and Diffusion Investigation - Osmosis and Diffusion Investigation Aim: To examine the process of osmosis and diffusion. Part A: Step 1: Q1.[IMAGE] Q2. The jiggling motion is visible because the fat globules are constantly being bombarded by smaller particles. [IMAGE] Q3. The Brownian motion is the ‘jiggling’ motion of the milk fat globules. All matter is in constant motion. Step 2: Q4. a) After 5 minutes Clear uncoloured water Cloud of purple stain * Potassium Permanganate [IMAGE][IMAGE][IMAGE] b) After 24 hours [IMAGE] Potassium Permanganate [IMAGE][IMAGE] The potassium permanganate will have spread throughout the beaker as the water molecules are co...   [tags: Papers] 558 words
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The Activation Energy of Bromide ion and Bromate ion - The Activation Energy of Bromide ion and Bromate ion To Determine the Activation Energy of the Reaction between Bromide ion and Bromate (V) ion in Acid Solution Objectives: By reacting Potassium Bromide and Potassium Bromate in the acid solution in varies temperature, we can then determine the Activation Energy of the reaction in different temperature through the equation:[IMAGE]. Questions: 1. Give an equation for the reaction between phenol and bromine. 2. What is the use of methyl orange in this experiment....   [tags: Chemical Reactions Reaction Rates Essays] 447 words
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Notes on Cellular Transport and the Food Chain - 1.) Cellular Transport a.Osmosis Osmosis is the diffusion of water molecules across a differentially permeable membrane from a region where water molecules are more concentrated to one where they are less concentrated. The transport of water is simple the cell being selectively permeable will allow water through it until an equilibrium is reached and at that time water will flow both in and out of the cell maintaining the equilibrium. For example a red blood cell is placed into a isotonic solution which means both the solution and the cell have the same concentration the net movement of water is zero, water however does move freely in and out of the cell to maintain the balance....   [tags: essays research papers] 537 words
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Article Critique: Hemodialysis Educational Training Methods and Their Impact on the Subject Fluid and Dietary Regulation - The article chosen for critique is by Baraz, Parvardeh, Mohammadi, and Broumand (2009). The study by Baraz et al (2009), evaluated two separate hemodialysis educational training methods and their impact on the subjects fluid and dietary regulation. A video presentation and a lecture based presentation performed by one principal investigator, a renal nurse expert, were the contrasting methods studied. Overview The aim of the study by Baraz et al. (2009) was to “determine the effect of an educational intervention on dietary and fluid compliance in patients having haemodialysis” (p....   [tags: Art Analysis ]
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(6 pages)
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Analyzing Particulate Matter Trends in Kejimkujik National Park, Nova Scotia 1979 - 2010 - Introduction Particulate matter (PM) is a comprehensive air pollutant that is made up of a mixture of solid and liquid particulates within the atmosphere. Poor air quality has a negative effect on human health; however soils, vegetation, and visibility can also be affected (AAQC, 2012). Particulate matter can vary among sizes, ranging from 0.005µm to 100µm in diameter (Environment Canada, 1999). The most common method to identify PM is to determine if the diameter is equal or less than 2.5µm....   [tags: Comprehensive Air Pollutant]
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Exploring the Effects of Gibberellic Acid on the Germination of Cereal Grains. - Introduction: Gibberellin is a plant hormone that is involved in the production of amylase which is vital for the conversion of starch into maltose into glucose molecules required for the embryo to grow. It does this by “regulating the genes that are involved in the synthesis of amylase. In barley seeds, it has been shown that the application of gibberellin causes an increase in the transcription of mRNA coding for amylase”. 1(Jones, p.120) Below is Diagram 1 showing the longitudinal section through a barley seed, outlining the process undertaken for the conversion of starch into maltose, by the action of seed embryo synthesis initiating germination, and the production of gibberellin....   [tags: Biology, Chemistry, science]
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Use of RBT System to Reduce Car Accidents Due to Alcohol Consumption - Random Breath Testing (RBT) is a system used in Australia by state and federal policing agencies to measure the blood alcohol concentration (BAC) of drivers. To do so, police officers use an apparatus known as a breathalyser, which are able to determine BAC through breath alcohol concentration. If the blood alcohol content of a driver is over the legal limit, they will experience penalties. The usage of breathalysers has become an efficient and reliable form of testing BAC on the roads, without the need for a blood test....   [tags: legal issues, breathanlyzer]
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Testing the concentration of Vitamin C in different juices and fruits - Testing the concentration of Vitamin C in different juices and fruits. Aim: - To test the concentration of Vitamin C in different types of Juice and fresh fruits. Hypothesis: - I hypothesize that all the fresh fruits and fresh juices will have more Vitamin C than the processed juices or concentrates. Background:- Vitamin C also called ascorbic acid is one of the most essential nutrients for human beings. It is used for almost all metabolic reactions in the body. It is also used as a food additive....   [tags: Experiment Analysis] 1131 words
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Hidden Suffering: Problems With the United States’ Use of Lethal Injection - Imagine yourself in a vacuum sealed room bound to a gurney by thick leather straps, rendering you captive. In both arms, the executioner positions intravenous catheters connected to tubes that run from you into a wall embedded with a one way window. Hidden behind that window are the syringes containing the serums that will shortly be injected into the saline solution now running through your body, ending the last few minutes of your life. A curtain in front of you is then raised, revealing a crowd of about 20 people quietly sitting in on your execution; these people are family from both sides of your trial as well as selected individuals from the media....   [tags: Execution, Death Penalty]
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Nutritional Deficiencies: Exploring Implications of Protein, Vitamin and Mineral Deficiencies - The first type of deficiency is caused by a lack of protein. Protein performs countless functions in the body and is entirely crucial for maintaining ideal health. Proteins are responsible for building muscle, repairing tissue, supplying the body with energy, keeping skin healthy and even breathing. The functions of proteins go on and on. The human body is constantly breaking down and using the proteins supplied. This is why it requires a constant protein intake to continue repairing, regulating and protecting....   [tags: Health Nutrition Pyramid Diet] 1034 words
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Jervell and Lange-Nielsen Syndrome: Pathophysiological Effects of Non-functional Iks Channels - Introduction Jervell and Lange-Nielsen Syndrome (JLNS) is a type of long QT syndrome that results in the delayed repolarization of cardiac myocytes, which is observed as an increase in the QT interval on an electrocardiogram (ECG), as well as congenital bilateral sensorineural deafness1, 5-8. This is due to homozygous or compound heterozygous mutations in either the KCNQ1 gene or the KCNE1 gene that result in the complete loss of function of the slowly activating delayed rectifier potassium channels (Iks) in cardiac muscle tissue and in the inner ear.1, 5-8 The structure and function of this channel will be considered with respect to the effects of mutations in KCNQ1 and KCNE1, the resultin...   [tags: Cardiac Myocytes, Sympathetic Simulation]
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Utilisation of Ultrasonic Testing to Monitor Corrosion of Absorber Tower - ... The insulation of the upper part is stripped to allow the inspection to be carried out externally, thus it will not interrupt the day-to-day operation Basic Principle of Ultrasonic Testing (UT) Inspection Ultrasonic inspection utilises high-frequency sound waves (typical testing test is in the range of 250 kHz-25 MHz) to detect surface and subsurface flaws of materials. This is one type of non-destructive test (NDT) that is commonly used to measure the thickness of equipment or pipework in industries (Davies & editor, 1998)....   [tags: fine grid inspection, moomba plant,co2 removal]
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The Effects of Forest Fires on Local Flora - Plants, trees, and other similar organisms constitute the community of a forest. These plants and trees stand together on a common soil ground, where they populate around each other to establish a full-fledged, bright green forest. Many factors can harm this forest community and annihilate the organisms that live there. One of the most devastating events is forest fires, which result in drastic environmental and biological changes. In the environmental aspect, the forest fire heats up the soil, causing chemical and physical changes of the soil composure....   [tags: Botany, Forestry]
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The Effectiveness of Sports Drinks Compared to Water - Staying hydrated is one of the most important parts of physical activity. In Clinics of Sports Medicine, it explains that “Maintenance of water and electrolyte balance is important for sustaining cognitive and physical performance. Dehydration degrades morale and desire to work. Body water deficits of as little as 2% body weight can impair physical performance. Water deficits of 5% to 7% body weight are associated with headaches, dizziness, and apathy” (Latzka, Montain 1). To prevent dehydration and its effects a medical team created Gatorade for the University of Florida’s football team in 1965....   [tags: Nutrition ]
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Scrutinizing Capital Punishment: an Arbitrary and Iniquitous System - A person with blood coursing through their veins and oxygen filling their lungs lies on a rickety cot; fear swarming their last thoughts as their trembling limbs are pinned down, never to be used again. A sharp needle pierces their protective layer of skin followed by an icy liquid searing through their timorous body. A jagged, last breath is taken as somebody’s child, sibling, parent, and friend is gone. A human life, as alive and precious as you or I, has been forfeited to an arbitrary and iniquitous system: capital punishment....   [tags: death penalty, violation, barbaric, immoral]
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Management of Hospitalized Patient With Diabetes Mellitus - ... Infection at the bypass graft joint after a femoral popliteal operation and Cellutillus is another complication with diabetic patients post op which includes inflammation of the dermal and subcutaneous layers of the skin ant the incision and cannula sites which requires IVT antibiotics Shrikhande (2012). An order for the antibiotics would need to be obtained by the medical officer and the nurse would need to follow the 6 rights before administering them. Antibiotics typically have four distinct actions which exploit the differences between the hosts and invading organism....   [tags: Diabetes Management Plan]
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The Glands of the Endocrine System - The Glands of the Endocrine System 5 The Glands of the Endocrine System The endocrine system is vital in maintaining homeostasis in the human body. Each gland of the endocrine system produces and releases hormones that enter the blood stream and travels to specific target organs. It is critical for this system to function properly in order to live a full life. The endocrine systems hormones are the chemical messengers that control many systems of the body. These messengers control metabolism, growth, development, sexual function and reproduction (Boyleston, 1987)....   [tags: Human Body]
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The Pathophysiology of Acute Renal Failure - Explain the pathophysiology of acute renal failure. Include pre-renal, intrarenal and postrenal causes. Acute renal failure is a sudden decrease of kidney function often characterized by the loss of homeostatic equilibrium of the internal medium causing waste accumulation in the blood. Aside from accumulation of waste products like nitrogen and urea, it is also characterized by a sudden decrease of glomerular filtration rate (GFR) which disables the kidney from filtering waste products that is harmful to the body....   [tags: Medical Science]
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The Plight of Genetically Engineered Food - I was one of those people who believed that there was something chemical or artificial about genetic engineering. To be quite honest, I had never really thought about the process of GE and I think that is the problem with the average consumer. After reading the book Tomorrow’s Table by Pamela C. Ronald and Raoul W. Adamchak, I realized just how far my perception was from the truth. Genetic engineering is directly related to organic farming, which strives to create more nutritious, better tasting food without the use of chemicals....   [tags: Analysis, Ronald and Adamchak] 1605 words
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Dangers of Consuming Too Much Sugar - Drinking a beverage remains as the perfect way to quench one’s thirst. Each and every drink holds the feature of being refreshing, invigorating, and most importantly, palatable. Thus, countless people take pleasure in consuming drinks. If drinks were not as enjoyable, people would not be able persevere with the rest of their lives. The human body necessitates a drink every day in order to survive. On the other hand, a human can last several days without food. Multitudinous humans, particularly Americans, relish on self indulging themselves with food and beverages....   [tags: Health Obesity Food]
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Persistent Pulmonary Hypertension of the Newborn - ... Effects of PPHN on the newborn I would like to begin this section by laying out the normal circulatory transition of the newborn. This is referred to as the fetal to neonatal transition (Glanville, 2011). Increased PaO2 which is oxygen pressure in the neonate as opposed to the fetus should lower the resistance of pulmonary vasculature which in return allows more blood flow to the pulmonary circulation. The closing of the ductus arteriosus increases blood flow to the lungs since the breathing is focused mainly on liquid to air gas exchange in the lungs, as opposed to the placenta in the fetus....   [tags: coagulation, pphn, abg test, artery blood]
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Critical Pathway: End Stage Renal Disease - ... II. Precipitating Factors Mr. D has a history of type II diabetes which was diagnosed 10 years ago. Mr. D has been noncompliant with diet and medication regimen over the years. He has gained a significant amount of weight over the past 2 years. He was diagnosed with hypertension 3 years ago. According to Brunner & Suddarth (2007), “ ESRD progress more rapidly in patients who excrete significant amounts of protein or have elevated blood pressure than in those without these conditions” (p.129)....   [tags: Nursing Essays]
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