A comparative study was made on the contraception efficacy and safety of the vaginal ring releasing 10mg/day Of progesterone in 160 cases and an intrauterine device,the cOPPer T 380A in 100 cases during lactation.It w...A comparative study was made on the contraception efficacy and safety of the vaginal ring releasing 10mg/day Of progesterone in 160 cases and an intrauterine device,the cOPPer T 380A in 100 cases during lactation.It was found that the contraceptive method is acceptable from 42 to 60 days postpartum.No pregnancy occurred in the copper T 380A IUD users during lactation.Those methods are worth to be recommended because of their contraceptive efficacy and no adverse effects on breastfeeding children.Prenatal care and Family Planning Programe are administered together to raise lactation performance rate,and to decrease induced abortion rate,the health of mothers and children were protected.展开更多
A new dinuclear copper（Ⅱ） polymer [Cu2（bipy）2（Hbtc）2（H2O）2]·（H2O）1/2 1 （bipy = 2,2＇-bipyridine, H3btc = benzene-1,3,5-tricarboxylic acid） was obtained by the hydrothermal reaction of Cu（NOa）2·...A new dinuclear copper（Ⅱ） polymer [Cu2（bipy）2（Hbtc）2（H2O）2]·（H2O）1/2 1 （bipy = 2,2＇-bipyridine, H3btc = benzene-1,3,5-tricarboxylic acid） was obtained by the hydrothermal reaction of Cu（NOa）2·3H2O, bipy and H3btc. Compound 1 has been structurally characterized by single-crystal X-ray diffraction analysis and identified using elemental analysis and IR spectrum. The title complex crystallizes in monoclinic system, space group P21/c with a = 7.2880（5）, b = 18.4778（13）, c=13.5465（10）A,β = 95.958000）°, CI9HI4.50CuN207.25, M,. = 450.37, V= 1814.4（2）A^3, Z= 4, Dc = 1.649 g/cm^3, μ= 1.253mm^-1, F（000） = 918, Rint = 0.0185, the final R = 0.0271 and wR = 0.0710 for 2773 observed reflections （I 〉 2σ（I））. The study results reveal that a pair of distorted square-pyramidal Cu^2＋ ions are interlinked by bis-monodentate bridging Hbtc^2- ligands to constitute a 16-membered ring.展开更多
In the present study,a film consisting of TiO_2 doped with copper was prepared for efficiently decomposing 4-nitrophenol(4-NP) by photocatalysis.The preparing process of TiO_2 doped with copper includes two procedures...In the present study,a film consisting of TiO_2 doped with copper was prepared for efficiently decomposing 4-nitrophenol(4-NP) by photocatalysis.The preparing process of TiO_2 doped with copper includes two procedures:preparing Ti(OH)_4 doped with copper and synthesizing anatase and rutile TiO_2 doped with copper.Ti(OH)_4 doped with copper could be achieved by hydrolyzing TiCl_4in the mixed solution containing deionized water and copper oxalate.The Ti(OH)_4 doped with copper can be gained successfully by the following procedures:rinsing,drying and vacuum drying.The Ti(OH)_4 doped with copper could be converted into anatase TiO_2 doped with copper and rutile TiO_2 doped with copper by incineration for 4.5 h at 723 and 1 073 K,respectively.Characterizations of anatase TiO_2 doped with copper and rutile TiO_2 doped with copper were determined by X-ray diffraction(XRD) and energy dispersion of X-ray(EDX).Anatase and rutile TiO_2 doped with copper were dissolved in a mixed solution containing isopropanol and diethylamine.Stainless electrode was submerged into with the solutions,the film of TiO_2 was formed by drying the thin layer at a ramp rate of 3℃/min until 373 K,and this temperature was held for 1 h.The temperature of the oven was subsequently increased to a final temperature of 823 K at a ramp rate of 3℃/min,and was held at this value for 1 h.The stainless steel covered with modified TiO_2 film was utilized as the anode.The stainless steel mesh was used as the cathode.The cathode and anode were connected with the source and immersed into the solution with 100 mg/L 4-NP.The whole reaction on photocatalysis was perfectly carried out after ultraviolet radiation and aerator were run.The experimental results showed that:cracking ratio of 4-NP ring,the removal ratio of chemical oxygen demand(COD) and total organic carbon(TOC) were respectively more than 90%,80% and 80% within 2 h.Degradation of 4-NP implied its potential application in associated wastewater.展开更多
文摘A comparative study was made on the contraception efficacy and safety of the vaginal ring releasing 10mg/day Of progesterone in 160 cases and an intrauterine device,the cOPPer T 380A in 100 cases during lactation.It was found that the contraceptive method is acceptable from 42 to 60 days postpartum.No pregnancy occurred in the copper T 380A IUD users during lactation.Those methods are worth to be recommended because of their contraceptive efficacy and no adverse effects on breastfeeding children.Prenatal care and Family Planning Programe are administered together to raise lactation performance rate,and to decrease induced abortion rate,the health of mothers and children were protected.
基金This work was supported by the National Natural Science Foundation of China (No. 50572040)
文摘A new dinuclear copper（Ⅱ） polymer [Cu2（bipy）2（Hbtc）2（H2O）2]·（H2O）1/2 1 （bipy = 2,2＇-bipyridine, H3btc = benzene-1,3,5-tricarboxylic acid） was obtained by the hydrothermal reaction of Cu（NOa）2·3H2O, bipy and H3btc. Compound 1 has been structurally characterized by single-crystal X-ray diffraction analysis and identified using elemental analysis and IR spectrum. The title complex crystallizes in monoclinic system, space group P21/c with a = 7.2880（5）, b = 18.4778（13）, c=13.5465（10）A,β = 95.958000）°, CI9HI4.50CuN207.25, M,. = 450.37, V= 1814.4（2）A^3, Z= 4, Dc = 1.649 g/cm^3, μ= 1.253mm^-1, F（000） = 918, Rint = 0.0185, the final R = 0.0271 and wR = 0.0710 for 2773 observed reflections （I 〉 2σ（I））. The study results reveal that a pair of distorted square-pyramidal Cu^2＋ ions are interlinked by bis-monodentate bridging Hbtc^2- ligands to constitute a 16-membered ring.
基金Environmental Protection Department of Jiangsu Province,China(No.2013023)Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction,China(No.IWCER201202)
文摘In the present study,a film consisting of TiO_2 doped with copper was prepared for efficiently decomposing 4-nitrophenol(4-NP) by photocatalysis.The preparing process of TiO_2 doped with copper includes two procedures:preparing Ti(OH)_4 doped with copper and synthesizing anatase and rutile TiO_2 doped with copper.Ti(OH)_4 doped with copper could be achieved by hydrolyzing TiCl_4in the mixed solution containing deionized water and copper oxalate.The Ti(OH)_4 doped with copper can be gained successfully by the following procedures:rinsing,drying and vacuum drying.The Ti(OH)_4 doped with copper could be converted into anatase TiO_2 doped with copper and rutile TiO_2 doped with copper by incineration for 4.5 h at 723 and 1 073 K,respectively.Characterizations of anatase TiO_2 doped with copper and rutile TiO_2 doped with copper were determined by X-ray diffraction(XRD) and energy dispersion of X-ray(EDX).Anatase and rutile TiO_2 doped with copper were dissolved in a mixed solution containing isopropanol and diethylamine.Stainless electrode was submerged into with the solutions,the film of TiO_2 was formed by drying the thin layer at a ramp rate of 3℃/min until 373 K,and this temperature was held for 1 h.The temperature of the oven was subsequently increased to a final temperature of 823 K at a ramp rate of 3℃/min,and was held at this value for 1 h.The stainless steel covered with modified TiO_2 film was utilized as the anode.The stainless steel mesh was used as the cathode.The cathode and anode were connected with the source and immersed into the solution with 100 mg/L 4-NP.The whole reaction on photocatalysis was perfectly carried out after ultraviolet radiation and aerator were run.The experimental results showed that:cracking ratio of 4-NP ring,the removal ratio of chemical oxygen demand(COD) and total organic carbon(TOC) were respectively more than 90%,80% and 80% within 2 h.Degradation of 4-NP implied its potential application in associated wastewater.
基金supported by the Chinese Ministry of Education via the Program for New Century Excellent Talents in University (NCET-12-0079)the Fundamental Research Funds for the Central Universities (DUT12LK51)~~
