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The objective of the study was to evaluate the expression of survivin, cell proliferation, and apoptosis in survivin-specific siRNA-transfected human gastric cancer cell line MGC-803. For this purpose, the target gene fragments were cloned into pSilencer3.1-Hl neo vector. Recombinant eukaryotic expression vector, pSilencer3.1-SVV was successfully constructed and then the recombinant vector was transfected...
Composite absorbent (CAds-AC-15) mainly used activated carbon and CaCl2 as the resources for adsorption refrigeration were prepared by the mixed method, and the content of activated carbon in CAds-AC-15 was 15%. Adsorption isotherms of ammonia on CAds-AC-15 were determined by positive gravimetric method. Adsorption desorption cycle performance and cooling characteristics of CAds-AC-15- ammonia working...
Baiyangdian is the largest wetland in north China, and plays an important role in many aspects such as climate regulation, biodiversity protection, flood control, and local fishery production etc. the research of this paper include the following four aspects: 1) The composition, current situation, and changing tendency of sub-systems that constructed the whole system. 2) Building up the system model...
Baiyangdian is the largest wetland in north China, it plays an important role in many aspects such as climate regulation, biodiversity protection, flood control, and local fishery production etc. The hydrological data of precipitation, evaporation, water level covering 1956-2000 have been analyzed for Baiyangdian wetland, the relationship between feeding flow to Baiyangdian wetland and precipitation...
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