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Recently, employee engagement has become a hot topic in both practice and theory. However, there is little study on hotel employee engagement. As is known, the leadership is a very important factor to staff motivation; but what had happened in leader-member interaction. The purpose of this study was to analysis based on the theory of psychological capital and leader-number exchange (LMX), and then...
Adding a certain concentration of Pb2+ to the culture medium. Two strong lead-resistant strains of microorganisms labeled as J13 and Y7, were selected from six soil samples, J13 and Y7 belongs to Erwinia sp. and Bacillus respectively through preliminary identification. J13 and Y7 were inoculated into culture medium which added with PbCO3 and carried out activation test of lead in precipitation fraction...
Phytoremediation is a potential cleanup technology for the removal of heavy metals from contaminated soils. Bidens maximowicziana is a new Pb hyperaccumulator, which not only has remarkable tolerance to Pb but also extraordinary accumulation capacity for Pb. The maximum Pb concentration was 1509.3 mg/kg in roots and 2164.7 mg/kg in overground tissues. The Pb distribution order in the B. maximowicziana...
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