Background: Cervical Intraepithelial neoplasia treatments have become essential interventions to manage cervical lesions. Majority of the recipients of these treatments are women within the reproductive age group, who...Background: Cervical Intraepithelial neoplasia treatments have become essential interventions to manage cervical lesions. Majority of the recipients of these treatments are women within the reproductive age group, who according to literature may be at risk of adverse pregnancy outcomes. This pilot study is part of a study investigating adverse pregnancy outcomes among women who received Cryotherapy, Thermal ablation and Loop Electrosurgical Excision Procedure compared to the untreated women in Zambia. Materials and Methods: This descriptive study analyzed records of 886 (n = 443 treated and n = 443 untreated) women aged 15 - 49 years. The women were either screened with Visual Inspection with Acetic Acid or treated for Cervical Intraepithelial neoplasia at the Adult Infectious Disease Centre between January 2010 and December 2020. Women meeting the criteria were identified using the Visual Inspection with Acetic Acid screening records and telephone interviews to obtain the adverse pregnancy outcome experienced. Data were analysed using STATA version 16 to determine the prevalence and obtain frequency distribution of outcomes of interest. Univariate and multivariable binary logistic regression estimated odds of adverse pregnancy outcomes across the three treatments. Results: The respondents were aged 15 to 49 years. Adverse pregnancy outcomes were observed to be more prevalent in the treatment group (18.5%) compared to the untreated group (5.4%). Normal pregnancy outcomes were lower in the treated (46.3%;n = 443) than the untreated (53.7%;n = 443). The treated group accounted for the majority of abortions (85.2%), prolonged labour (85.7%) and low birth weight (80%), whereas, the untreated accounted for the majority of still births (72.7%). Women treated with cryotherapy (aOR = 2.43, 95% CI = 1.32 - 4.49, p = 0.004), thermal ablation (aOR = 6.37, 95% CI = 0.99 - 41.2, p = 0.052) and Loop Electrosurgical Excision Procedure (aOR = 9.67, 95% CI = 2.17 - 43.1, p = 0.003) had two-, six- and ten-times higher odds of adverse pregnancy outcomes respectively, relative to women who required no treatment. Conclusion: Adverse pregnancy outcomes are prevalent among women who have received treatment in Zambia. The findings indicate that treating Cervical Intraepithelial Neoplasia has been linked to higher chances of experiencing abortion, delivering low birth weight babies and enduring prolonged labor that may result in a caesarean section delivery. Cervical neoplasia treatments, particularly Loop Electrosurgical Excision Procedure, are associated with significantly increased odds of adverse pregnancy outcomes. It is essential to include information about prior Cervical Intraepithelial neoplasia treatment outcomes in obstetric care.展开更多
The crystal of zinc complex with salicylaldehyde salicylhydrazone(SHSH ) was obtained in DMF and pyridine. It has been characterized by IR, UV, element analysis and X-ray diffraction analysis. The crystallographic dat...The crystal of zinc complex with salicylaldehyde salicylhydrazone(SHSH ) was obtained in DMF and pyridine. It has been characterized by IR, UV, element analysis and X-ray diffraction analysis. The crystallographic data were as foll ows: monoclinic system, space group Pn, a=1.094 6 nm, b=0.884 0 nm, c=1.161 0 nm , 穋m-3, ≥2 The X-ray crystal structure analysis revealed that the center zinc(Ⅱ) is bonded to two oxygen atoms and one nitrogen atoms from a tridentate ligand(SHSH) and two nitrogen atoms from two solvent pyridine molecules to form a five-coord inate distorted trigonal bipyramid. The full-optimized molecular geometries of t itle complex was calculated at B3LYP/6-31G and HF/6-31G levels with Guassian 98W program. CCDC: 252832.展开更多
The crystal of binuclear zinc complex Zn2(dhaash)2(py)4 was obtained in DMF and pyridine, where H2dhaash is 2,4-dihydroxy-5-acetylacetophenone-N-salicylhydrazone. It has been characterized by IR, UV, element analysis ...The crystal of binuclear zinc complex Zn2(dhaash)2(py)4 was obtained in DMF and pyridine, where H2dhaash is 2,4-dihydroxy-5-acetylacetophenone-N-salicylhydrazone. It has been characterized by IR, UV, element analysis and X-ray single crystal diffraction. The crystallographic data were as follows: monoclinic system, space group P21 / c, a=1.108 98(11) nm, b=1.640 84(16) nm, c=1.445 14(14) nm, β=108.617(2)°, Z=2, V=2.492 1(4) nm3, Dc=1.466 g·cm-3, Mr=1 099.74, μ=1.031 mm-1, F(000)=1 136 and the final R=0.044 8 and wR=0.105 8 for 4 143 observed reflections with I≥2σ(I), respectively. The X-ray crystal structure analysis revealed that, in the centrosymmetric binuclear complex molecule, two zinc髤 centers are linked by two oxygen atoms (O(3) and O(3A)), respectively. Zn(1)...Zn(1A) distance is 0.314 81(6) nm, O(3)...O(3A) distance is 0.270 4(2) nm. Every zinc髤 ion has an elongated octahedral coordination. For example, the two pyridine nitrogen atoms, one oxygen atom and one nitrogen atom from salicylhydrazone, one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in one dhaash2- ligand and one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in another dhaash2- ligand coordinated to zinc髤 ion, respectively. Two zinc髤 ions and all the 72 non-hydrogen atoms in the two dhaash2- ligands are in the same plane. CCDC: 261929.展开更多
在Y型分子筛的合成过程中引入P元素,制备了含P的Y型分子筛PY。并将PY分子筛为核心,使TiO2-SiO2氧化物原位生长在PY分子筛的外表面,制备了加氢精制催化剂载体,然后以Ni、W为活性金属组分,采用等体积溶液浸渍法制备了用于焦化蜡油(CGO)加...在Y型分子筛的合成过程中引入P元素,制备了含P的Y型分子筛PY。并将PY分子筛为核心,使TiO2-SiO2氧化物原位生长在PY分子筛的外表面,制备了加氢精制催化剂载体,然后以Ni、W为活性金属组分,采用等体积溶液浸渍法制备了用于焦化蜡油(CGO)加氢处理的催化剂,采用XRD、31P MAS NMR、BET、IR等方法表征了载体及催化剂的物理化学性质,并考察了P的引入对催化剂加氢精制催化活性的影响。结果表明,P的加入没有破坏Y型分子筛的晶体结构,PY分子筛具有较好的晶型;其中,部分P原子进入了Y型分子筛的骨架结构中,另外一部分P原子以无定型状态存在于分子筛表面,从而使分子筛的强B酸与总酸数量降低。以PY分子筛为载体组分制备的催化剂与其他含P催化剂及不含P催化剂相比,具有较大的孔容、孔径以及合理的B酸与L酸比例,在保证焦化蜡油大分子扩散速率的同时,有利于增加催化剂加氢性能和裂化性能的协同作用,使催化剂对焦化蜡油的加氢精制催化活性得到明显改善。展开更多
文摘Background: Cervical Intraepithelial neoplasia treatments have become essential interventions to manage cervical lesions. Majority of the recipients of these treatments are women within the reproductive age group, who according to literature may be at risk of adverse pregnancy outcomes. This pilot study is part of a study investigating adverse pregnancy outcomes among women who received Cryotherapy, Thermal ablation and Loop Electrosurgical Excision Procedure compared to the untreated women in Zambia. Materials and Methods: This descriptive study analyzed records of 886 (n = 443 treated and n = 443 untreated) women aged 15 - 49 years. The women were either screened with Visual Inspection with Acetic Acid or treated for Cervical Intraepithelial neoplasia at the Adult Infectious Disease Centre between January 2010 and December 2020. Women meeting the criteria were identified using the Visual Inspection with Acetic Acid screening records and telephone interviews to obtain the adverse pregnancy outcome experienced. Data were analysed using STATA version 16 to determine the prevalence and obtain frequency distribution of outcomes of interest. Univariate and multivariable binary logistic regression estimated odds of adverse pregnancy outcomes across the three treatments. Results: The respondents were aged 15 to 49 years. Adverse pregnancy outcomes were observed to be more prevalent in the treatment group (18.5%) compared to the untreated group (5.4%). Normal pregnancy outcomes were lower in the treated (46.3%;n = 443) than the untreated (53.7%;n = 443). The treated group accounted for the majority of abortions (85.2%), prolonged labour (85.7%) and low birth weight (80%), whereas, the untreated accounted for the majority of still births (72.7%). Women treated with cryotherapy (aOR = 2.43, 95% CI = 1.32 - 4.49, p = 0.004), thermal ablation (aOR = 6.37, 95% CI = 0.99 - 41.2, p = 0.052) and Loop Electrosurgical Excision Procedure (aOR = 9.67, 95% CI = 2.17 - 43.1, p = 0.003) had two-, six- and ten-times higher odds of adverse pregnancy outcomes respectively, relative to women who required no treatment. Conclusion: Adverse pregnancy outcomes are prevalent among women who have received treatment in Zambia. The findings indicate that treating Cervical Intraepithelial Neoplasia has been linked to higher chances of experiencing abortion, delivering low birth weight babies and enduring prolonged labor that may result in a caesarean section delivery. Cervical neoplasia treatments, particularly Loop Electrosurgical Excision Procedure, are associated with significantly increased odds of adverse pregnancy outcomes. It is essential to include information about prior Cervical Intraepithelial neoplasia treatment outcomes in obstetric care.
文摘The crystal of zinc complex with salicylaldehyde salicylhydrazone(SHSH ) was obtained in DMF and pyridine. It has been characterized by IR, UV, element analysis and X-ray diffraction analysis. The crystallographic data were as foll ows: monoclinic system, space group Pn, a=1.094 6 nm, b=0.884 0 nm, c=1.161 0 nm , 穋m-3, ≥2 The X-ray crystal structure analysis revealed that the center zinc(Ⅱ) is bonded to two oxygen atoms and one nitrogen atoms from a tridentate ligand(SHSH) and two nitrogen atoms from two solvent pyridine molecules to form a five-coord inate distorted trigonal bipyramid. The full-optimized molecular geometries of t itle complex was calculated at B3LYP/6-31G and HF/6-31G levels with Guassian 98W program. CCDC: 252832.
文摘The crystal of binuclear zinc complex Zn2(dhaash)2(py)4 was obtained in DMF and pyridine, where H2dhaash is 2,4-dihydroxy-5-acetylacetophenone-N-salicylhydrazone. It has been characterized by IR, UV, element analysis and X-ray single crystal diffraction. The crystallographic data were as follows: monoclinic system, space group P21 / c, a=1.108 98(11) nm, b=1.640 84(16) nm, c=1.445 14(14) nm, β=108.617(2)°, Z=2, V=2.492 1(4) nm3, Dc=1.466 g·cm-3, Mr=1 099.74, μ=1.031 mm-1, F(000)=1 136 and the final R=0.044 8 and wR=0.105 8 for 4 143 observed reflections with I≥2σ(I), respectively. The X-ray crystal structure analysis revealed that, in the centrosymmetric binuclear complex molecule, two zinc髤 centers are linked by two oxygen atoms (O(3) and O(3A)), respectively. Zn(1)...Zn(1A) distance is 0.314 81(6) nm, O(3)...O(3A) distance is 0.270 4(2) nm. Every zinc髤 ion has an elongated octahedral coordination. For example, the two pyridine nitrogen atoms, one oxygen atom and one nitrogen atom from salicylhydrazone, one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in one dhaash2- ligand and one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in another dhaash2- ligand coordinated to zinc髤 ion, respectively. Two zinc髤 ions and all the 72 non-hydrogen atoms in the two dhaash2- ligands are in the same plane. CCDC: 261929.
文摘在Y型分子筛的合成过程中引入P元素,制备了含P的Y型分子筛PY。并将PY分子筛为核心,使TiO2-SiO2氧化物原位生长在PY分子筛的外表面,制备了加氢精制催化剂载体,然后以Ni、W为活性金属组分,采用等体积溶液浸渍法制备了用于焦化蜡油(CGO)加氢处理的催化剂,采用XRD、31P MAS NMR、BET、IR等方法表征了载体及催化剂的物理化学性质,并考察了P的引入对催化剂加氢精制催化活性的影响。结果表明,P的加入没有破坏Y型分子筛的晶体结构,PY分子筛具有较好的晶型;其中,部分P原子进入了Y型分子筛的骨架结构中,另外一部分P原子以无定型状态存在于分子筛表面,从而使分子筛的强B酸与总酸数量降低。以PY分子筛为载体组分制备的催化剂与其他含P催化剂及不含P催化剂相比,具有较大的孔容、孔径以及合理的B酸与L酸比例,在保证焦化蜡油大分子扩散速率的同时,有利于增加催化剂加氢性能和裂化性能的协同作用,使催化剂对焦化蜡油的加氢精制催化活性得到明显改善。
基金Supported by Natural Science Foundation of China(21466025)the Natural Science Foundation of Inner Mongolia(2013MS0205)the State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology,Taiyuan University of Technology(2014)
