نتایج جستجو برای: chlorides
تعداد نتایج: 3219 فیلتر نتایج به سال:
Although a great deal has been written about the clinical aspects of louse-borne typhus, there have been only a few reports on the metabolic changes which occur in this disease. Among the first biochemical studies on typhus were those reported by Murchison (1) in 1862. He discovered that large amounts of urea frequently were present in the blood of typhus patients, and that their urine containe...
The impacts of distribution water quality changes caused by blending different source waters on lead release from corrosion loops containing small lead coupons were investigated in a pilot distribution study. The 1-year pilot study demonstrated that lead release to drinking water increased as chlorides increased and sulfates decreased. Silica and calcium inhibited lead release to a lesser degre...
The relationship between melting temperature of multi-component chlorides and their ionic bond strength was studied. It can be used as a convenient method to know the when thermodynamic information is lacking for chlorides.
soil-free rock rocks Introduction: Detection of elevated concentrations of S and Cl at the landing sites of Viking 1 and 2 [1], and Mars Pathfinder (MP) [2-5] reveals the presence of sulfates and chlorides in soil and rock samples [1-10]. These data are consistent with the findings of Ca sulfates and NaCl in Martian meteorites [11,12], and with Earth-based spectroscopic observations [13,14] ten...
In the st,udy of the plasma chlorides in a series of ncphritics Wolferth (1) recently called attention to the low figures occasionally obsc>rved in certain cases. As a rule, this finding was noted in patients lvho had been for some time upon a chloride-free diet This observation we (2) have confirmed and have found the plasma chlorides as low as 3.6 gm. per liter in one case of advanced glomcru...
Reactions of β-azolyl enamines and nitrile oxides were studied by both experimental and theoretical methods. (E)-β-(4-Nitroimidazol-5-yl), (5-nitroimidazol-4-yl) and isoxazol-5-yl enamines smoothly react regioselectively at room temperature in dioxane solution with aryl, pyridyl, and cyclohexylhydroxamoyl chlorides without a catalyst or a base to form 4-azolylisoxazoles as the only products in ...
A rapid and reproducible method for chloride estimation in urine is described. The colour produced is stable and obeys Beer's law over a wide range of concentrations using a simple colorimeter and filter. The method gives good agreement with both the potentiometric titration method of Sanderson (1952) and the mercurimetric titration method of Schales and Schales (1941). The precision of the col...
The current report presents the first theoretical study of the restricted CAN bond rotation in carbamoyl chlorides. Several N-benzylN-methylcarbamoyl chlorides were investigated, with varying pattern of substitution in the aromatic ring. Optimizations and frequency calculations were conducted employing DFT at the B3LYP/6-31+G(d) level of theory. Each of the studied structures exhibits a pair of...
From the literature and from numerous experiments made at the Scientific Institute of Fertilizers, it is well known that high amounts of chlorides lower the percentage of starch in potato tubers. While the depressing influence of fertilizers containing chlorine on the total yield of potatoes is not always manifested, the decrease of the starch content in the tubers may be considered a constant ...
1. By the use of the silver-silver chloride electrode, measurements have been made of the chloride ion concentrations of 1 per cent solutions of five proteins, containing from 0.001 N to 0.1 N hydrochloric acid. The hydrogen ion concentrations of the same solutions have been measured by the use of the hydrogen electrode. 2. The measurements indicate that the chlorides of gelatin, egg albumin, c...
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