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13 C NMR Spectrum of DMSO-d 6. Pure deuterated DMSO shows no peaks in 1 H NMR spectroscopy and as a result is commonly used as an NMR solvent. [2] However commercially available samples are not 100% pure and a residual DMSO-d 5 1 H NMR signal is observed at 2.50ppm (quintet, J HD =1.9Hz). The 13 C chemical shift of DMSO-d 6 is 39.52ppm (septet ...
South Africa is the southernmost country in Africa. It is the 25th-largest country in the world by land area, and with close to 60 million people, is the world's 24th-most populous nation. The World Bank classifies South Africa as an upper-middle-income economy, and a newly industrialised country. [1] [2] Its economy is the largest in Africa ...
Dimethyl sulfoxide (DMSO) is an organosulfur compound with the formula (CH 3) 2 S O.This colorless liquid is the sulfoxide most widely used commercially. It is an important polar aprotic solvent that dissolves both polar and nonpolar compounds and is miscible in a wide range of organic solvents as well as water.
Solid properties Std enthalpy change of formation, Δ f H o solid? kJ/mol Standard molar entropy, S o solid? J/(mol K) Heat capacity, c p: 149.40 J/(mol·K) Liquid properties Std enthalpy change of formation, Δ f H o liquid: −203.4 kJ/mol Standard molar entropy, S o liquid: 188.78 J/(mol·K) Enthalpy of combustion, Δ c H o: −2037.3 kJ/mol ...
Super hygroscopic polymer films composed of biomass and hygroscopic salts are able to condense moisture from atmospheric humidity. [16] By implementing rapid sorption-desorption kinetics and operating 14–24 cycles per day, this technique produced an equivalent water yield of 5.8–13.3 L kg −1 of sustainable raw materials, demonstrating the ...
Mining Weekly [2] was first published in 1995 by Creamer Media, an independent publishing company based in Johannesburg, South Africa. The company was founded by Martin Creamer [ 3 ] in 1981. The company's other weekly news magazine, Engineering News , began publication in 1981.
The Hygroscopic Cycle is a concept that has evolved recently and is at the heart of intensive research on hygroscopic fluids. Recent developments have been the Kalina cycle , [ 17 ] but with the actual configuration, it is expected to have an impact in locations with poor access to water, and a good integration with combined cycle plants, and ...
This was the forerunner of all community newspapers in South Africa. By 1978, Caxton were publishing the following newspapers either fortnightly, monthly or weekly: Sandton Chronicle , North Eastern Tribune , Northcliff and Blackheath Times , Randburg Sun , Southern Courier , Mayfair-Brixton , Newlands-Melville Telegraph , Rosebank Killarney ...