“Grave” concerns are held for Sydney Metro construction workers who were exposed to more than 200 times the safety standard of silica dust. Exposure to silica dust was 208 times the workplace ...

Department of Organic Chemistry, Indian Institute of Science, Bangalore560012, India ...

Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.

Multi-element template (teal) framework of tetrahedra (bottom). Zoomed-in portion shows iron (Fe), silica, platinum (Pt), and gold (Au). The combination of the new functional nanomaterials created ...

利用草酰氯，DMSO和三乙胺将醇氧化为相应的羰基化合物的反应。在1976年，swern 等发现-50℃下在二氯甲烷中用三氟乙酸酐处理DMSO可以得到三氟乙酰氧二甲硫鎓三氟乙酸盐，这种盐加入三乙胺后可以迅速氧化伯醇和仲醇得到相应的醛酮。1978年，进而发现草酰氯是比 ...