منابع مشابه
Scattering by solutions of major sea salts.
Increased scattering by seawater relative to that by pure water is primarily due to additional fluctuation of the refractive index contributed by sea salts. Salts with different ionic weight and sizes, while barely affecting the scattering that is due to density fluctuations, have a significant effect on the scattering that is due to concentration fluctuations. And this explains the major diffe...
متن کاملTubular microporous organic networks bearing imidazolium salts and their catalytic CO2 conversion to cyclic carbonates.
Tubular microporous organic networks bearing imidazolium salts (T-IM) were prepared by Sonogashira coupling of tetrakis(4-ethynylphenyl)methane and diiodoimidazolium salts, which showed promising catalytic activities in heterogeneous conversion of CO(2) into cyclic carbonates.
متن کاملCarbonate phosphonium salts as catalysts for the transesterification of dialkyl carbonates with diols. The competition between cyclic carbonates and linear dicarbonate products.
At 90-120 °C, in the presence of methylcarbonate and bicarbonate methyltrioctylphosphonium salts as catalysts ([P8881][A]; [A] = MeOCO2 and HOCO2), the transesterification of non-toxic dimethyl- and diethyl-carbonate (DMC and DEC, respectively) with 1,X-diols (2 ≤ X ≤ 6) proceeds towards the formation of cyclic and linear products. In particular, 1,2-propanediol and ethylene glycol afford propy...
متن کامل[Dead Sea bath salts for osteoarthritis of the knee].
26 patients with osteoarthritis of the knees were randomly divided into 2 groups of 13 each with patients of similar ages, sex distribution and duration and severity of disease. All were treated with daily baths at 34-35 degrees C for 20 min. containing Dead Sea bath salts (Group I) or sodium chloride (Group II). The study was double-blind and of 2 weeks duration. Patients were evaluated by a r...
متن کاملDeep-sea carbonates: dissolution and mass wasting on ontong-java plateau.
Seismic reflection profiles and the structure of sediments in box cores from Ontong-Java Plateau indicate large-scale land sliding and sediment flow processes, respectively. The topographic morphology of sliding and slumping is depth- dependent, suggesting control by dissolution processes.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Scientific American
سال: 1894
ISSN: 0036-8733
DOI: 10.1038/scientificamerican09151894-15591bsupp