In order to nealize the efficient floatation separation of garnet and uiollastonite , the authors studied the surface chemical charac-teristics and various floatation behaviour of the two minerals?developed acidic com...In order to nealize the efficient floatation separation of garnet and uiollastonite , the authors studied the surface chemical charac-teristics and various floatation behaviour of the two minerals?developed acidic combination depressant FDi and introduced sodium oleate j FeCls and FDi as the flotation agent, they achieved success. In the experimental re-search on the artificiallymixed ores separation, the recovery and concentra-tion grade of the two minerals ivere both over 92% and 95% respectively. At the same time , it was found that the chemical absorption form of iron oleate presented bridge and chelating patterns on the surfaces of garnet and wollastonite activated by Fe3+.展开更多
Using the tetrazolium (MTT) assay, we examined the cytotoxicities of recombinant human tumor necrosis factor (rhTNF) and five chemotherapeutic agents, namely CTX, 5-FU, VCR, DDP and KSM, on human ovarian cancer cell l...Using the tetrazolium (MTT) assay, we examined the cytotoxicities of recombinant human tumor necrosis factor (rhTNF) and five chemotherapeutic agents, namely CTX, 5-FU, VCR, DDP and KSM, on human ovarian cancer cell lines OVCAR3 and CAOV3. The results showed that the cytotoxicities of rhTNF at concentrations of 50-50 000 U / ml on OVCAR3 cell line and CAOV3 cell line exposed to rhTNF for 24 hours were from 14.2% ± 6.8% to 67.2%± 3.0% and from 8.2%± 4.3% to 60.9%±1.3%, respectively. The cytotoxicities of all five chemotherapeutic agents tested on the two cell lines were much lower than that of rhTNF. We also studied the combined antitumor potential of rhTNF with the five chemotherapeutic agents and the results showed that there were various degrees of synergism in cytotoxicities of rhTNF in combination with DDP or KSM on the two cell lines. Based on experiments in vitro, the in vivo antitumor activities of rhTNF, both alone and in combination with KSM, were examined in OVCAR3 cancer transplanted in nude mice. The results showed a considerable antitumor effect of rhTNF when it was used alone and a marked synergistic effect when it was used in combination with KSM on the xenograft tumors.展开更多
文摘In order to nealize the efficient floatation separation of garnet and uiollastonite , the authors studied the surface chemical charac-teristics and various floatation behaviour of the two minerals?developed acidic combination depressant FDi and introduced sodium oleate j FeCls and FDi as the flotation agent, they achieved success. In the experimental re-search on the artificiallymixed ores separation, the recovery and concentra-tion grade of the two minerals ivere both over 92% and 95% respectively. At the same time , it was found that the chemical absorption form of iron oleate presented bridge and chelating patterns on the surfaces of garnet and wollastonite activated by Fe3+.
文摘Using the tetrazolium (MTT) assay, we examined the cytotoxicities of recombinant human tumor necrosis factor (rhTNF) and five chemotherapeutic agents, namely CTX, 5-FU, VCR, DDP and KSM, on human ovarian cancer cell lines OVCAR3 and CAOV3. The results showed that the cytotoxicities of rhTNF at concentrations of 50-50 000 U / ml on OVCAR3 cell line and CAOV3 cell line exposed to rhTNF for 24 hours were from 14.2% ± 6.8% to 67.2%± 3.0% and from 8.2%± 4.3% to 60.9%±1.3%, respectively. The cytotoxicities of all five chemotherapeutic agents tested on the two cell lines were much lower than that of rhTNF. We also studied the combined antitumor potential of rhTNF with the five chemotherapeutic agents and the results showed that there were various degrees of synergism in cytotoxicities of rhTNF in combination with DDP or KSM on the two cell lines. Based on experiments in vitro, the in vivo antitumor activities of rhTNF, both alone and in combination with KSM, were examined in OVCAR3 cancer transplanted in nude mice. The results showed a considerable antitumor effect of rhTNF when it was used alone and a marked synergistic effect when it was used in combination with KSM on the xenograft tumors.
