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Showing 1 to 20 of 68 for “"ammonium chloride"”.
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The Thermal Expansion of Ammonium-Chloride Near The Order-Disorder Transition
Made available in DSpace on 2015-05-12T21:41:54Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013317.PDF: 1632496 bytes, checksum: 1156d0c31f173690e869ea8ee4121a9c (MD5) Previous issue date: 1969
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The Heat Capacity of Ammonium-Chloride Near The Order-Disorder Transition
Made available in DSpace on 2015-05-12T21:41:55Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7013476.PDF: 1850099 bytes, checksum: d15e1e1c376019cdb5a1afbd4a90868d (MD5) Previous issue date: 1969
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The heat capacity of ammonium chloride near the order-disorder transition
A theory is presented to explain the behavior of ammonium chloride near the first order phase transition at 240K in terms of· a physical model that has singular and nonsingu1ar parts of the free energy coupled together. The singularity is normally associated with a second order phase transition, …
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The thermal expansion of ammonium chloride near the order-disorder transition
… to explain the behavior of the volume of ammonium chloride near the first order transition at 242°K. This theory is able to account for a first order transition by considering the coupling between an elastic lattice system and the order-disorder system. The lattice system gives rise to …
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Monitoring bluegill swimming behavior and the effects of sublethal ammonium chloride gradients
… (1 and 10% of the 96-hr LC50) gradients of ammonium chloride at 22 °C were assessed using the same system. The lower concentration gradients produced temporary increased activity and increased use of near-gradient areas. These responses were considered to be related to exploratory behavior. …
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Radiocarbon Compounds Produced by Slow Neutron Irradiation of Ammonium-Chloride and Ammonium-Bromide
Made available in DSpace on 2014-12-05T19:36:00Z (GMT). No. of bitstreams: 1 0009159.pdf: 9416785 bytes, checksum: 0d9bd00afb24b88d20acff44e286f72a (MD5) Previous issue date: 1954
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Fate and effect of alkyl benzyl dimethyl ammonium chloride in mixed aerobic and nitrifying cultures
Quaternary ammonium compounds (QACs) are widely used in commercial and consumer applications as disinfectants, fabric softeners, hair conditioners, and emulsifying agents. The massive production and utilization of QACs has led to their extensive discharge into the environment, raising concerns …
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The incidence of ectomycorrhizae by Pisolithus tinctorius on Quercus rubra seedlings fertilized with sodium nitrate and ammonium chloride
… fertilizer supplied as sodium nitrate or as ammonium chloride; (3) fertilization at 15 days or at 40 days after planting of seed; (4) rates of nitrogen applied at 0.0, 0.0133, 0.0266, or 0.0532 g N per seedling; and (5) the seedlings grown for 60, 100, or 140 days. All 960 seedlings were …
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Effects of Post-Irradiation Treatment on the Chemical Effects of the Nuclear Transformation Nitrogen-14(neutron,proton)carbon-14 in Crystalline Ammonium-Chloride
Made available in DSpace on 2014-12-05T19:37:54Z (GMT). No. of bitstreams: 1 6200645.pdf: 5589359 bytes, checksum: bdf8296b553ce2cd878208a5b58a4eac (MD5) Previous issue date: 1961
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Evaluating Immunotoxicity of Quaternary Ammonium Compounds
Alkyl dimethyl benzyl ammonium chloride (ADBAC) and didecyl dimethyl ammonium chloride (DDAC) are common quaternary ammonium compounds used as disinfectants in households, medical, and restaurant settings. They cause occupational skin and respiratory hazards in humans, and developmental and …
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An x-ray scattering study of surfactant water mixtures
… (CsPFO) / heavy water, and decylammonium chloride / ammonium chloride / heavy water, and their dependence on temperature and composition. The results obtained are discussed with relatIon to inter- and intra-micellar interactions leading to the proposition of an attractive …
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Development of Leaching Processes for the Recovery of Rare Earth Elements from Acid Mine Drainage Precipitates
… an activation energy of 6.4 kJ/mol at pH 3.0. Ammonium chloride leaching was examined to selectively remove contaminant metals from a MREO product. The ammonium chloride process successfully leached major contaminant metals in excess of 85% recovery and had a maximum activation energy of 40.0 …
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Evaluation of a Microalgal Bioassay Based on Community Level Physiological Profiling (CLPP)
… sources for a microalgal bioassay. Quaternary ammonium compounds (QACs) were used as potentially toxic model compounds to demonstrate the applicability of the assay. Toxicity of dodecyl trimethyl ammonium chloride (DTAC) and didecyl dimethyl ammonium bromide (DDAB) on the growth of Scenedesmus …
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Electrolytic production of hydrogen peroxide
… and 0.01018 N potassium hydroxide, saturated ammonium chloride and 0.043 N phosphoric acid were studied.
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Investigating Ammonium Toxicity In The Performance Of Recirculating Periphytic Algal Wastewater Treatment Systems
… possible explanation for the result is ammonia/ammonium toxicity. To test this hypothesis, a second experiment that added ammonium chloride to diluted biodigester filtrate (target concentrations of 20mg/L, 40mg/L, and 80mg/L NH3-N for control, low and high treatments respectively) was conducted. …
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An investigation of the possibility of separating group III qualitative analysis into two subdivisions
… manganese. That different concentrations of ammonium hydroxide and ammonium chloride will precipitate varying amounts of zinc and manganese. The writer feels quite sure that his method requires less time and is less expensive than other methods.*
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Novel Group 4 Metal Amido Complexes - syntheses, reactivity and olefin polymerization catalysis
… were synthesized using the amine / diethyl-ammonium chloride / toluene elimination and salt metathesis routes. These compl-exes were characterized by NMR and elemental analysis. Many of these complexes have been studied on the basis of structure and their catalytic potential was …
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The expression and metabolism of low density lipoprotein receptors in familial hypercholesterolaemia
… defect. Lysosomotropic weak bases such as ammonium chloride partially inhibited rapid degradation of the mutant receptors, suggesting the involvement of proteolysis in acidic compartments such as lysosomes or endosomes. Fibroblasts from FH1a and lb exhibited normal synthesis rates of LDL …
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Effects of Quaternary Ammonium Disinfectants on Mouse Reproductive Function
Quaternary ammonium compounds (QACs) are antimicrobial disinfectants commonly used in commercial and household settings. While these compounds have been used for decades, reproductive toxicity has not been thoroughly evaluated. Extensive use of QACs results in ubiquitous human exposure to …
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Hydrogen Gas Production By a Species of Ectothiorhodospira
… Increasing evolution of H₂ with decreasing ammonium chloride (NH₄C1) concentrations provided evidence that nitrogenase was the catalyst in gas production. Cells were grown in a mineral medium plus 0.2% acetate with sodium sulfide (Na₂S*9H₂0) as electron donor. Syringes inserted into 27 ml …
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