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Showing 1 to 20 of 35 for “"Magnesium chloride"”.
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The effect of chaotropic magnesium chloride on the growth of microbes
… kosmotropes stabilise macromolecular structures. Magnesium chloride (MgCl₂) is one of the most widespread chaotropic solutes that is not expected to support growth above 2.3 M, but few studies have focused on the effects of MgCl₂ on microbial growth. This study investigated the effects of MgCl₂ in …
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Continuous Co-Separation by Liquid Absorption in Aqueous Cuprous Chloride (CuCl) and Magnesium Chloride (MgCl2) Solution
… of CuCl mixed with a complexing agent (metal tri-chloride) and a solvent (metal tetra-chloride, toluene, ethanol, etc.). The best method consisted of an aqueous solution of CuCl and MgCl2, which has previously been used for CO absorption experiments reported in the literature. The absorption takes …
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The effects of impurities in corrosive media causing stress corrosion cracking in aisi 304 stainless steel
The influence of impurities in magnesium chloride upon the rate of attack of stress corrosion cracking in AISI 304 stainless steel has been investigated. Previous investigations in this laboratory indicated that different batches of technical grade magnesium chloride produced poor reproducibility …
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Impacts of dust suppressant application in the quality of urban runoff in arid regions
… products, ligninsulfonate, acrylic polymers, magnesium chloride, fiber mulch, and non-petroleum-based products and one plot did not receive treatment (control). Rainfall was simulated and the runoff emanating from each plot was collected and analyzed for several parameters. In addition, the …
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Evaluation of susceptibility of AISI 304 to stress-corrosion cracking in terms of crack nucleation and crack propagation
… propagation. U-bend specimens were exposed to magnesium chloride solutions boiling at atmospheric pressure for some predetermined time. The concentrations of magnesium chloride employed were 40, 42, and 44 per cent by weight. After exposure, specimens were microscopically examined and crack …
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Stabilization of Soft Clay Subgrades in Virginia Phase I Laboratory Study
… lime, cement, lignosulfonate, synthetic polymer, magnesium chloride, and a proprietary cementitious stabilizer. A laboratory procedure was developed and applied to three Virginia soils obtained from Northern Virginia, Staunton, and Lynchburg. Key findings from the research include that (1) …
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An investigation into the synthesis and characterisation of metal borohydrides for hydrogen storage
… been made into the mechanical milling of metal chlorides with sodium borohydride to try to form homoleptic borohydrides. Mechanical milling of zinc chloride with sodium borohydride resulted in the formation of a covalent complex NaZn\(_2\)(BH\(_4\))\(_5\). Thermal decomposition occurred at 80°C …
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REACTIVE GASES IN ELECTROTHERMAL ATOMISATION ATOMIC ABSORPTION SPECTROMETRY
… an ashing step. A number of interferences eg. magnesium chloride on lead determinations and non-specific absorbance interferences, decreased when air was introduced. Hydrocarbon gases (< 5% v/v) introduced during charring improved sensitivity (up to 89%) for certain refractory analytes (eg. Al, …
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Effect of residual stress gradients in austenitic stainless steels on stress corrosion cracking
… using X-ray diffraction technique. Boiling Magnesium Chloride was used as corrosive environment. Compressive stresses developed in the HAZ of the specimen and in regions away from the HAZ stress free values were obtained. The magnitude of the stress gradient decreased as the peak temperature …
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The effect of nitrogen content on the susceptibility to stress-corrosion cracking of type 20Cr-20Ni and AISI type 310 stainless steels
… the alloys containing various nitrogen levels to magnesium chloride solutions boiling at 154°C. It was found that the increase in nitrogen levels up to 0.161 wt.% did not induce cracking in type 20Cr-20Ni alloys even after long exposure times. At the same time, increase in nitrogen content …
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Effect of pre-exposure thermal treatment on susceptibility of type 304 austenitic stainless steel to stress corrosion
… specimens were exposed to 42 weight percent magnesium chloride aqueous solution after pre-exposure heat treatments at 140°C and 154°C. The straight-line relationship between maximum crack depth and the logarithm of exposure time expressed by the empirical equation log t = log t<sub>o</sub> + …
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Evaluation of laser surface melting to mitigate chloride stress corrosion cracking in an austenitic stainless steel
… the ability of laser surface melting to mitigate chloride stress corrosion cracking (See) of type 304 stainless steel. The effects of laser surface melting on microstructure, mechanical state, and corrosion behavior were examined. The major effect of laser surface melting of 304 stainless steel …
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Ante- and post-mortem factors affect muscle protein functionality from fish
… fillets were brined in 8.7 or 17.4% (w/v) sodium chloride solution, respectively, for 30, 60, 90, or 120 min at 3°C. Increased brine concentration decreased brined pH, myosin solubility, brined and cooked moisture content, and water activity, and increased fillet weight loss after brining, …
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The design of a thiokol plant
… The information for the design of the ethylene dichloride, the other raw material of Thiokol, was obtained from literature. The studies of the polysulfide solution showed that 13.83 grams of sulfur would react with every 10. 2 grams of caustic when sulfur was in excess. The amount of sulfur that …
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Verifying the Calcium Oxychloride Threshold in Cementitious Pastes
<p>Calcium oxychloride (CAOXY) formation is a serious deterioration mechanism known to cause joint damage in concrete pavements. CAOXY is the product of a chemical reaction between calcium chloride (CaCl2) or magnesium chloride (MgCl) deicing salts and calcium hydroxide in the cementitious matrix. …
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Sequential cycloadditions for the synthesis of taxoid mimics and stereoselective synthesis of tamoxifen analogues via a new carbomagnesiation-palladium coupling reaction
… Treatment of a propargyl alcohol with vinyl magnesium chloride generated a magnesium-chelate intermediate, which was capable of undergoing a palladium-catalyzed cross coupling with aryl halides. The reaction was used in a stereoselective three-step synthesis of new analogues (99 and 100) of …
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Manufacturing bio-tiles
… the process required additives such as 0.3 M magnesium chloride to achieve bio-tiles that met international standards. The pumping method was only operated for 4 days. With this technique, cementation solution was pumped through custom sealed moulds at intervals. The highest tested effective …
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The Development and Optimization of Raman Spectroscopy Analyses for Mobile Salinity Sensing
… most common salt deicers: sodium, calcium, and magnesium chloride, potassium acetate, and calcium magnesium acetate. The Raman spectra are analyzed using previously proven methods for determining chloride salt concentration that were optimized to work with both acetate and chloride salt …
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The Effect of the Chemical Composition of Low Salinity Water on the Growth, Development, and Survival of Cultured Juvenile Blue Crabs
… part of the study compared ratios of sodium chloride (NaCl) to commercial sea salt (SS) in five treatments: 100% NaCl, 100% SS, 25:75 NaCl/SS, 50:50 NaCl/SS, and 75:25 NaCl/SS. The second par! of the study examined mixed ion treatments in water containing solutions of NaCl; NaCl and calcium …
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Calcium homeostasis in Pichia pastoris
… study, we examined the effects of calcium and magnesium on growth, heterologous protein expression, and calcium homeostasis in P. pastoris . The divalent cations calcium and magnesium are responsible for diverse roles in in the function of the cells in eukaryotes. Although it is known that …
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