Half-Metallicity in Single-Layered Manganese Dioxide Nanosheets by Defect Engineering with vacancies is a robust half-metal, which was confirmed by theoretical calculations, whereas vacancy-free single-layered MnO2 is a typical semiconductor... Hui,Wang,Jiajia,... - 《Angewandte Chemie》 被引量: ...
Through a secret ballot casting, the 18 UN member states that had presented their candidacies were all elected into the UN body to fill its 18 vacancies. The members elected were Argentina, Austria, Bahamas, Bahrain, Bangladesh, Bulgaria, Burkina Faso, Cameroon, Czech, Denmark, Eritrea, Fiji,...
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