In order to develop photoactive cobalt-doped TiO2 for the degradation of organic pollutants using visible light irradiation, the effects of cobalt precursor on TiO2 microstructure were investigated. Three cobaltprecur...In order to develop photoactive cobalt-doped TiO2 for the degradation of organic pollutants using visible light irradiation, the effects of cobalt precursor on TiO2 microstructure were investigated. Three cobaltprecursors, i.e. COCl2, Co（NO3）2 and COSO4 with two doping levels （nominally 1% and 10%）, and two annealing temperatures （400 and 800 ℃） were adopted to prepare tile doped titania through the sol-gel method. The powder samples were characterized with XRD, SEM, BET surface area analysis and UV-Vis absorption spectroscopy, and their photocatalytic activities were evaluated by the degradation of aniline under visible light irradiation. The results showed that the distribution of titania phases, particle size, morphology, surface area and the optical absorption of the catalysts were greatly dependent on the cobalt precursors. Samples prepared from Co（NO3）2, especially for those doped at 1% and calcined at 400 ℃, showed the highest photocatalytic activity towards the degradation of aniline, and the possible reasons are discussed briefly.展开更多
BACKGROUND Previous reports have demonstrated that S-1 has remarkable effects in the maintenance treatment of advanced non-small-cell lung cancer(NSCLC),and has less toxic and side effects than conventional drugs.AIM ...BACKGROUND Previous reports have demonstrated that S-1 has remarkable effects in the maintenance treatment of advanced non-small-cell lung cancer(NSCLC),and has less toxic and side effects than conventional drugs.AIM To investigate the efficacy and safety of S-1 maintenance therapy in patients with advanced NSCLC.METHODS Ninety-four patients with NSCLC admitted to our hospital from September 2015 to April 2018 were included in the study and divided into the S-1 group(47 cases)and the gemcitabine group(47 cases)by random digital table method.The S-1 group was treated with S-1,while the gemcitabine group received gemcitabine treatment.The clinical efficacy and quality of life of the patients after treatment in the two groups were evaluated.RESULTS There was no significant difference in the total effectiveness rate between the two groups(P=0.519).The quality-of-life scores indicated that there was no significant difference between the two groups in terms of four dimensions of the GQOLI-74 questionnaire(P=0.518,0.094,0.338,0.418).The incidence of nausea and vomiting,granulocytopenia and diarrhea in the S-1 group was significantly lower than that in the gemcitabine group(P=0.001,0.001 and 0.001,respectively).There was no significant difference in the incidence of thrombocytopenia(P=0.366),the progression-free survival(P=0.064),and the survival between the two groups(P=0.050).CONCLUSION S-1 maintenance therapy shows a significant therapeutic effect in patients with advanced NSCLC.It has the same clinical efficacy as gemcitabine,but with less toxic and side effects than conventional drugs.展开更多
文摘In order to develop photoactive cobalt-doped TiO2 for the degradation of organic pollutants using visible light irradiation, the effects of cobalt precursor on TiO2 microstructure were investigated. Three cobaltprecursors, i.e. COCl2, Co（NO3）2 and COSO4 with two doping levels （nominally 1% and 10%）, and two annealing temperatures （400 and 800 ℃） were adopted to prepare tile doped titania through the sol-gel method. The powder samples were characterized with XRD, SEM, BET surface area analysis and UV-Vis absorption spectroscopy, and their photocatalytic activities were evaluated by the degradation of aniline under visible light irradiation. The results showed that the distribution of titania phases, particle size, morphology, surface area and the optical absorption of the catalysts were greatly dependent on the cobalt precursors. Samples prepared from Co（NO3）2, especially for those doped at 1% and calcined at 400 ℃, showed the highest photocatalytic activity towards the degradation of aniline, and the possible reasons are discussed briefly.
文摘BACKGROUND Previous reports have demonstrated that S-1 has remarkable effects in the maintenance treatment of advanced non-small-cell lung cancer(NSCLC),and has less toxic and side effects than conventional drugs.AIM To investigate the efficacy and safety of S-1 maintenance therapy in patients with advanced NSCLC.METHODS Ninety-four patients with NSCLC admitted to our hospital from September 2015 to April 2018 were included in the study and divided into the S-1 group(47 cases)and the gemcitabine group(47 cases)by random digital table method.The S-1 group was treated with S-1,while the gemcitabine group received gemcitabine treatment.The clinical efficacy and quality of life of the patients after treatment in the two groups were evaluated.RESULTS There was no significant difference in the total effectiveness rate between the two groups(P=0.519).The quality-of-life scores indicated that there was no significant difference between the two groups in terms of four dimensions of the GQOLI-74 questionnaire(P=0.518,0.094,0.338,0.418).The incidence of nausea and vomiting,granulocytopenia and diarrhea in the S-1 group was significantly lower than that in the gemcitabine group(P=0.001,0.001 and 0.001,respectively).There was no significant difference in the incidence of thrombocytopenia(P=0.366),the progression-free survival(P=0.064),and the survival between the two groups(P=0.050).CONCLUSION S-1 maintenance therapy shows a significant therapeutic effect in patients with advanced NSCLC.It has the same clinical efficacy as gemcitabine,but with less toxic and side effects than conventional drugs.
