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921.
922.
Elizarova MK Udalov VS Karamyshev NN Shormanov VK 《Sudebno-meditsinskaia ekspertiza》2003,46(4):32-35
The results of extraction of 1,2- and 1,4-dihydroxybenzene from water solutions by the hydrophobic and hydrophilic organic solvents are described. The influence of an extragent nature and of a water-phase pH medium on an extraction degree is demonstrated. The repetition factor needed to extract a preset quantity of examined compounds is calculated. 相似文献
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924.
Determination of 2.4-dinitrophenol,its basic metabolite and 4-oxide diphenyl in biological materials
A possibility was considered to isolate, by using dimethylformamide, 2.4-dinitrophenol, 2-amino-4-nitrophenol and 4-oxid-diphenyl from a biological-origin object. A method of extraction with subsequent chromatography in thin silicon-gel layer was used to purify the isolates from biological materials. The designed technique provides for identifying and for quantitatively defining the discussed phenol structures contained in the isolates from the liver tissue of corpses and human blood. 相似文献
925.
Subject Acquisition for Web-Based Surveys 总被引:1,自引:0,他引:1
926.
This article examines the changing patterns of poverty in Singapore. As Singapore's population ages, the poor increasingly includes the elderly. It appears that ascribed factors, such as gender and race, have significant influence on financial security at old age. As the population ages, the adequacy of existing anti-poverty policy is challenged. 相似文献
927.
Scholars of "decentralization" have recently revealed the importance of subnational industrial policy in responding to the challenges of globalization. But these treatments tend to make endemic assumptions about either the universal efficiency or inefficiency of decentralization. This article argues that subnational industrial policy performance is politically contingent and develops national patterns that are more composite than endemic. Political contingency is analyzed in terms of subnational incumbents'incentives to delegate authority and resources to industrial policy agencies and the degree of symmetry in authority and information flows across these agencies. A cross-regional/cross-national comparison of several subnational units in Spain and Brazil demonstrates that subnational industrial policy is implemented and maintained where incumbents delegate and policy-making agencies are symmetrically integrated. 相似文献
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