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Study on Relationship between Reproductive Tract Infections and Personal Hygiene Behaviors among Vulnerable Married Women in Shanghai

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Journal of Reproduction and Contraception 2003年第3期14卷 181-188页

作者： Zeng-yuWEN jun-qingwu Xi-huaZHONG Wen-yingLI Xiao-pingZHOU MedicalSchool FudanUniversityShanghai200032China ShanghaiInstituteofPlannedParenthoodResearch Shanghai200032China ShanghaiXuhuiDistrictPopulation＆FamilyPlanningCommission Shanghai200030China

Objective:To understand the influence of personal hygiene behaviors on reproductive tract infections (RTIs) and to provide evidence for the intervention among married women at childbearing age Methods:A total of 1 631 married women in 60 residence neighborhoods from 4 streets and 2 stagnant enterprises were selected by multistage cluster random sampling and interviewed face-to-face through questionnaires, laboratory tests assay and gynecological examination. All data were analyzed by SAS 8.2. Results:The positive detection rates of five target pathogens, trichomonas vaginalis, candida albicans, ***, chlamydia trachomatis and Neisseria gonorrhoeae, in the study were 3.04%, 5.04%, 1.52%, 6.68%, and 0.12%, respectively. Personal hygiene practices and sexual behaviors among married women in the study were good in general. The vast majority of women (98.77%) rinsed their vulvae every day and more than half of the women (53.03%) took bath every day. In terms of the prevalence of endogenous infection, there were statistical differences between women who had different frequencies of rinsing their vulvae and taking bath; and for the prevalence of sexually transmitted infection, there were significant differences between women whose husband had different frequency of washing their external genital organs before sexual intercourses each time. The mostly adopted contraceptive methods among women ranked by frequency were intra-uterine devices (IUD) (68.69%), male condom (16.69%) and safe period (6.20%), among which male condom could prevent sexually transmitted infections. Multiple logistic regression analyses indicated that the frequency of taking bath, the husband washing his external genital organ before sexual intercourse and the age of marriage were the influencing factors of RTIs, too. Conclusion:It is very urgent that health educational intervention of RTIs among married women be conducted and especially the knowledge on condom's double effects on contraception

关键词： married women at childbearing age RTIs behavior health education

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Impact of Organophosphorous Pesticide Exposure on Semen Quality

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Journal of Reproduction and Contraception 2003年第3期14卷 171-180页

作者： Wen-yingLI jun-qingwu Xiao-pingZOU Cai-qinXIAO Wei-jinZHOU Er-shengGAO ShanghaiInstituteofPlannedParenthoodResearch Shanghai200032China ChangshuReproductiveHealthInstitution.Changshu JiangsuProvince215500China

Objective To investigate the impact of organophorous pesticide exposure on semen quality and other risk factors of semen quality Method Questionnaire investigation, external genital examination and laboratory examination of semen quality were conducted on 322 subjects, who were divided into exposed and control group, each consisting of 161 subjects. Results Multivariate analysis showed that educational level and years of alcohol drinking had effect on semen volume. Compared with subjects with primary school education or lower, those with junior high school education had higher value of semen volume(OR=1.961). Proportion of subjects with high semen volume decreased with the increasing years of alcohol drinking (OR=0.962). Organophosphorous pesticide exposure could result in the decline of the number of sperms with progressive forward progression (OR=0.528), figure of semen density (OR=0.266), semen viability (OR=0.398) and percentage of normal sperm morphology (OR=0.281). There are possible relationships between the season of semen collection and the number of sperms with progressive forward progression, semen viability and percentage of normal sperm morphology . Compared to summer, values of the above three indices would be higher in winter (OR was 2.272, 4.060 and 5.249, respectively). Conclusion Exposure to organophosphorous pesticide could result in the deterioration of semen quality of the peasants.

关键词： organophosphorous pesticide exposure semen quality risk factor

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Principal Component Analysis on Semen Quality among Chinese Young Men

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Journal of Reproduction and Contraception 2003年第1期14卷 55-63页

作者： jun-qingwu Er-shengGAO Jian-guoTAO Cui-lingLIANG WenyingLI Qiu-yingYANG Kang-shouYAO Wei-qunLU LuCHEN Fudanuniversity Shanghai200032China ShanghaiInstituteofPlannedParenthoodResearch Shanghai200032China ZhejiangInstituteofPlannedParenthoodResearch l-langzhou310012China GuizhouInstituteofPlannedParenthoodResearch Guiyang550004China QingdaoInstituteofPlannedParenthoodResearch Qingdao255071China

Objective To understand the current semen quality status among Chinese young men and influential factors in China and to explore its evaluation index. Methods A total of 562 healthy male volunteers were recruited during their premarital examinations in seven provincials and municipal regions' MCH centers; descriptive and principal component analyses were used to analyze data.Results The findings show that semen volume (2. 61± 1. 10 mL), sperm density (64. 47× 34. 59× 106/mL), percentage of sperm forward progression (59. 89%± 17. 11%), percentage of sperm viability (77. 19% ± 11. 87%), and percentage of normal sperm morphology ( 78. 23% ± 9. 15% ). The first principal component function is Z1= -8.512 54 + 0. 001 35X1' + 0. 031 92X2'+0. 043 52X3'+ 0. 039 84X4', which is closely related to percentage of sperm viability (X3), percentage of sperm forward progression (X2), and percentage of normal sperm morphology (X4)The second principal component function is: Z2= 0. 491 92+ 0. 080 80X1- 0. 000 58X2-0. 005 10X3- 0. 018 07X4, which depends on the total sperm count (X1). Conclusion Only 42. 3% subjects meet all the common WHO standard of semen quality. The multiple analysis of Z1 showed that the highest Z1 are among subjects from Guizhou,workers, or town residents. Multiple analysis of Z2 showed that the older age when the subjects had the first sexual impulse, the longer period of sexual abstinence and more quantity of sperm they had; the more sexual activity subjects had, the less amount of sperm they had.

关键词： young men semen quality principal component analysis

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The Canonical Correlation Analysis on Semen Quality and Serum Heavy Metals in Chinese Young Men

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Journal of Reproduction and Contraception 2003年第2期14卷 119-128页

作者： jun-qingwu Cui-lingLIANG Er-shengGAO Jian-guoTAO Qiu-yingYANG XiaoXU Wen-juanCAI JianGUO FengTANG JiangZHU Zhan-haiFU Yin-meiDU FudanUniversity shanghai200032China ShanghaiInstituteofPlannedParenthoodResearch Shanghai200032China HenanInstituteofPlannedParenthoodResearch Zhengzhou450003China HeibeiInstituteofPlannedParenthoodResearch Shijiazhuang050025China ShanxiInstituteofPlannedParenthoodResearch Xi＇an030006China ZhejiangInstituteofPlannedParenthoodResearch Hangzhou310012China GuizhouInstituteofPlannedParenthoodResearch Guiyang550004China QingdaoInstituteofPlannedParenthoodResearch Qingdao266071China TaiyuanCentersforDiseaseControlandPrevention Taiyuan030001China

Objective To explore the correlation between serum, heavy metal and semen quality in normal Chinese young menMethods This study was designed as a multi-center cross-sectional investigation. The subjects consisted of 562 male vomunteers who had undergone premarital physical examination in maternal and children health centers in 7 provinces in China. Results Results from Spearman rank correlation analysis (partial variable: region) show that serum lead and cadmium are negatively related to percentage of morphological normal sperm, but canonical correlation between semen quality and serum heavy metal are not significant. Canonical correlation analysis among the subjects from Guizhou shows cadmium is harmful to sperm morphology. In Henan, furthermore, results show lead and cadmium could negatively affect sperm viability and morphology. Conclusion Among all study subjects, canonical correlation between semen quality and serum heavy metal were not significant; however, results in some region showed serum cadmium and lead might be harmful to sperm quality.

关键词： semen quality heavy metal canonical correlation serum lead serum cadmium

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Effect of air-conditioner exposure on semen quality

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Asian Journal of Andrology 2004年第4期6卷 354-354页

作者： Min-LiLu jun-qingwu Qiu-YingYang Wei-JinZhou Er-ShengGao DepartmentofEpidemiology SchoolofPublicHealthShanghaiMedicalSchoolofFudanUniversityShanghai200032China ShanghaiInstituteofPlannedParenthoodResearch Shanghai200032China

Aim: To investigate the effect of air-conditioner exposure on semen quality. Methods: The data came from the healthy male volunteers, aged 22 to 30 years, who went to centers for maternity and children health for premarital physical examination in Shanghai, Henan, Zhejiang and Hebei from December 1998 to February 2000. The sampling size is 304. Results: Among the subjects, 90 (29.6 %) had air-conditioner at home and the rest did not. X2-test and multiple logistic regression analyses showed that, the difference between the exposure and control groups was statistically significant in semen volume, sperm density and proportion of sperm with normal morphology. The three indexes were lower in the exposure group. Conclusion: Air-conditioner exposure possibly influences the semen quality.

关键词： semen quality air-conditioner influencing factors

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Impact of organophosphorous pesticide exposure on semen quality of Chinese peasants

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Asian Journal of Andrology 2004年第3期6卷 258-258页

作者： Wen-YingLi jun-qingwu Xiao-PingZou Cai-QinXiao Wei-JinZhou Er-ShengGao ShanghaiInstituteofPlannedParenthoodResearch Shanghai200032China ChangshuInstituteofReproductiveHygiene Changshu215500China

Aim: To investigate the impact of organophosphorous pesticide exposure and other risk factors on the semen quality of Chinese peasants. Method: Questionnaire investigation, external genital examination and laboratory examination were conducted on 322 male peasants, including the exposed and the control groups of 161 subjects each. Results: Multivariate analysis showed that the educational level and the years of alcohol drinking influenced the semen volume. Compared with subjects of primary school education or lower, those with junior high school education had a higher semen volume (OR=1.961). Proportion of subjects with higher semen volume decreased with increased years of alcohol drinking (OR=0.962). Organophosphorous pesticide exposure decreased the number of forward progression sperm (OR=0.528), the sperm density (OR=0.266), the sperm viability (OR=0.398) and the percentage of normal morphology sperm (OR=0.281). A possible relationship was present between the season of semen collection and the number of forward progression sperm, sperm viability and percentage of normal morphology sperm. Compared with the summer data, the above three indices were higher in winter (OR being 2. 272, 4.060 and 5.249, respectively). Conclusion: Exposure to organophosphorous pesticide could damage the semen quality of the peasants. Education and alcohol drinking also affect the semen quality.

关键词： organophosphorous pesticide semen quality peasants risk factor

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Effects of coal rank, Fe_3O_4 amounts and activation temperature on the preparation and characteristics of magnetic activated carbon

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Mining Science and Technology 2010年第6期20卷 872-876页

作者： YANG Mingshun XIE Qiang ZHANG jun LIU Juan WANG Yan ZHANG Xianglan ZHANG qingwu School of Chemical and Environmental Engineering China University of Mining ＆ Technology Beijing 100083 China

Coal-based Magnetic Activated Carbons （CMAC＇s） were prepared from three representative coal samples of various ranks： Baorigele lignite from Inner Mongolia; Datong bitumite from Shanxi province; and Taixi anthracite from Ningxia Hui Auto- nomous Region. Fe3O4 was used as a magnetic additive. A nitrogen-adsorption analyzer was used to determine the specific surface area and pore structure of the resulting activated carbons. The adsorption capacity was assessed by the adsorption of iodine and methylene blue. X-ray diffraction was used to measure the evolution behavior of Fe304 during the preparation process. Magnetic properties were characterized with a vibrating-sample magnetometer. The effect of the activation temperature on the performance of CMAC＇s was also studied. The results show that, compared to Baorigele lignite and Taixi anthracite, the Datong bitumite is more appropriate for the preparation of CMAC＇s with a high specific surface area, an advanced pore structure and suitable magnetic properties. Fe304 can effectively enhance the magnetic properties and control the pore structure by increasing the ratio of meso- pores. An addition of 6.0% Fe304 and an activation temperature of 880 ℃ produced a CMAC having a specific surface area, an iodine adsorption, a methylene blue adsorption and a specific saturation magnetization of 1152.0 m2/g, 1216.7 mg/g, 229.5 mg/g and 4.623 emu/g, respectively. The coal used to prepare this specimen was Datong bitumite.

关键词： magnetic activated carbon coal rank Fe304 activation temperature

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结合局部二进制表示和超像素分割求精的立体匹配

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光学学报 2018年第6期38卷 233-241页

作者：刘艳李庆武霍冠英邢俊河海大学物联网工程学院江苏常州213022 常州市传感网与环境感知重点实验室江苏常州213022

为改善传统立体匹配视差图中目标边缘的毛刺现象,以及弱纹理和视差不连续区域的"阶梯效应"等,提出了一种结合局部二进制表示和超像素分割的立体匹配方法。首先融合二进制表示的窗口内像素的空间和颜色特征进行代价计算,并以此求得初始视... 详细信息

为改善传统立体匹配视差图中目标边缘的毛刺现象,以及弱纹理和视差不连续区域的"阶梯效应"等,提出了一种结合局部二进制表示和超像素分割的立体匹配方法。首先融合二进制表示的窗口内像素的空间和颜色特征进行代价计算,并以此求得初始视差;然后将简单线性迭代聚类方法分割的结果作为像素的空间和颜色标记,为超像素内的目标边缘和其他像素点选择恰当的稳定点进行视差传播,以达到视差优化时边缘保持和空间平滑的目的。在Middlebury数据集上分别进行代价计算与优化方法的对比实验,结果表明,采用该算法获取的目标边缘的视差更为平滑,在左右视图中的遮挡区和不重叠区域获得的视差也比较准确,有效地降低了非遮挡区、全图、不连续区域的误匹配率。

关键词：机器视觉立体匹配局部二进制表示简单线性迭代聚类超像素视差优化

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The BDS-3 RNSS Timing Monitoring Method based on B2b Signal and its Experimental Result

The BDS-3 RNSS Timing Monitoring Method based on B2b Signal ...

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第十三届中国卫星导航年会

作者： Binbin Wang qingwu Yi Baoguo Yu Chuanzhen Sheng junjun Ying jun Zhao State Key Laboratory of Satellite Navigation System and Equipment Technology

RNSS timing is one of the basic services of BDS, it is of great significance to monitor the timing accuracy and integrity. Aiming at the problems of current RNSS timing monitoring methods and taking advantage of BDS-3 PPP service, this paper designs a timing monitoring method based on B2 b signal called B2 b-TM. Firstly, the BDS-3 PPP service was introduced. Then, the specific implementation process and key algorithm of B2 b-TM method was discussed in detail. The data of several iGMAS stations were used to verify the feasibility of B2 b-TM method, experiment result shows that the BDS-3 RNSS timing accuracy is 9.0 ns using B1 C frequency and 15.8 ns using B2 a frequency. There are great differences in timing service at different areas and different periods, which reveals the necessity of distributed timing monitoring nationwide.

关键词： BDS-3 RNSS Timing Monitoring B2b-TM Timing Experiment

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X80管线钢焊缝组织及裂纹形成机制

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金属热处理 2015年第11期40卷 68-72页

作者：端强阎军朱国辉蔡庆伍北京科技大学冶金工程研究院北京100083 安徽工业大学工程研究院安徽马鞍山243002

采用光谱分析、夏比冲击、OM、SEM和EDS等方法研究了X80管线钢焊缝成分、组织和性能,并探讨了焊接裂纹形成机制。结果表明,由于焊接冶金和固态相变的作用,X80管线钢的焊缝呈现凝固和相变组织的综合特征,其微观组织为粒状贝氏体+大块状... 详细信息

采用光谱分析、夏比冲击、OM、SEM和EDS等方法研究了X80管线钢焊缝成分、组织和性能,并探讨了焊接裂纹形成机制。结果表明,由于焊接冶金和固态相变的作用,X80管线钢的焊缝呈现凝固和相变组织的综合特征,其微观组织为粒状贝氏体+大块状铁素体;焊缝处裂纹呈现结晶裂纹特征,其内部存在大量的非金属夹杂物;焊缝断口大部分为解理断裂,近裂纹边缘具有准解理断裂特征,冲击性能低于热影响区和母材。

关键词： X80管线钢焊缝组织焊缝裂纹冲击性能

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