CRITIQUE OF PRIMARY ARTICLE B. Purpose of this study The purpose of this study was to obtain information about the measurement of trace metals (zinc‚ magnesium‚ copper‚ manganese‚ selenium‚ iron‚ nitric oxide) and compare it to the severity of sickling of hemoglobin F. C. How was the research/experiment done? What essential values were measured? There were ninety four people chosen for the study. Fifty- nine of the patients had no episodes 3 months prior to the study. The other thirty-five
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parameters‚ P‚ V‚ n and T through the experiment. Equipment and Materials: Large beaker Ring stand Clamp Copper wire 100 mL eudiometer tube Magnesium (Mg) ribbon M6 H2SO4 (Sulfuric Acid) Wash bottle filled with distilled water Procedure: First I cut a piece of Mg ribbon and used steel wool to rub off the MgO (magnesium oxide). I then used the scale to determine when I had approximately 0.0440g of Mg. I then wrapped the Mg with copper wire so that none was showing‚ but left a
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atmospheric condition i.e.‚ moist air‚ carbon dioxide form undesirable compounds on the surface is known as corrosion. The compounds formed are usually oxides. Rusting is also a type of corrosion but the term is restricted to iron or products made from it. Iron is easily prone to rusting making its surface rough. Chemically‚ rust is a hydrated ferric oxide. Rusting‚ an electrochemical mechanism: Rusting may be explained by an electrochemical mechanism. In the presence of moist air containing dissolved
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solution is used which is toxic by all routes of exposure and is also a lung irritant. To avoid harm and ensure safety‚ eye protection and skin protection must be used. Equipment: * Metal tongs * Bunsen Burner * Zinc * Lead * Magnesium * Iron * Tin * Aluminium * Copper * Splint * 50 Ml Hydrochloric acid solution * 8 Test tubes * Measuring Cylinder * Beaker Method: Part A: Reaction of Metals with Oxygen 1. Hold each metal under a Bunsen
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RECENT DEVELOPMENTS IN NANOPARTICLES. INTRODUCTION Nanotechnology is a multidisciplinary scientific field undergoing explosive development. Nanometer-sized particles offer novel structural‚ optical and electronic properties that are not attainable with individual molecules or bulk solids. Advances in nanomedicine can be made by engineering nanoparticles that are capable of targeted delivery of drugs. This leads toward the concept and possibility of personalized medicine for the potential
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spontaneous (∆G < 0). The second reaction involved magnesium ribbon. Two slabs of dry ice were set-up‚ with holes carved on both of them. When the magnesium ribbon was lighted on the first slab of ice‚ it produced a bright‚ white light‚ and was quickly covered with the second slab of dry ice. The reaction produced very bright light (which may cause blindness) and some sparks (exothermic reaction took place)‚ which signified that the reaction between magnesium solid and carbon dioxide gas had been proceeding
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There are five different types of cement in the dental field each is versatile in their properties‚ uses‚ and mixing techniques. Many were traditionally used for routine cementation through the nineteen ninety’s and since have been replaced by newer makeup and mixing techniques. The selection of cement for a specific procedure requires knowledge of the chemical and physical properties of each particular cement for the specific restorative process to be performed. This first cement I’m going to discuss
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(calcium oxide) + carbon dioxide (thermal decomposition) To make lots of quicklime we use a lime kiln 1) fill the kiln with crushed limestone 2) heat it strongly with a supply of hot air quicklime comes out of the bottom of the kiln‚ waste gases leave at the top. Usually the kiln rotates to ensure that the limestone is thoroughly mixed with the stream of hot air and it therefore decomposes completely. 1.3 Decomposing carbonates Calcium is in group two‚ as is magnesium‚ so we can expect magnesium carbonate
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into the corresponding oxides and carbon dioxide. The temperature of decomposition depends upon the activity of the metal; that is to say‚ the more active the metal‚ the more stable is the carbonate. Thus‚ the carbonates of sodium and potassium are stable at the highest temperature of a Bunsen burner flame‚ whereas the carbonates of silver and copper are easily decomposed. In this experiment copper (ii) carbonate will be decomposed at a high temperature‚ forming copper (ii) oxide and carbon dioxide:
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1.7.2 Coal Bottom Ash in Self-Compacting Concrete Coal Bottom Ash has gained a great consideration as an alternative for replacing fine aggregates. Coal Bottom Ash has physical characteristics are same as that of naturally found sand which makes it suitable for replacing sand in concrete. Coal Bottom Ash represents good pozzolanic element reactivity when it comes in contact with finer elements. Many researchers in their research work claimed that the properties of Self-Compacting Concrete comprised
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