INTRODUCTION In recent years, with the gradual improvement of road construction, the rapid increase of the number of motor vehicles, vehicle emissions and the current poor vehicle performance, poor vehicle maintenance...INTRODUCTION In recent years, with the gradual improvement of road construction, the rapid increase of the number of motor vehicles, vehicle emissions and the current poor vehicle performance, poor vehicle maintenance, higher emission factor and so on, air pollution caused by the traffic issues becomes the focus of people attention. The harmful substances are gradually accumulated to atmosphere particles surrounding roads due to dust particles （soil dusts, road dusts, construction dusts）, coal emissions, industrial emissions, vehicle emissions, biomass burning, secondary particles, which has a certain harmful influence to the atmosphere, soil and plants surrounding roads.展开更多
Objective To investigate prevalence rate of learning disabilities (LD) in Chinese children, and to explore related risk factors, and to provide theoretical basis for preventing such disabilities. Methods One thousand ...Objective To investigate prevalence rate of learning disabilities (LD) in Chinese children, and to explore related risk factors, and to provide theoretical basis for preventing such disabilities. Methods One thousand and one hundred fifty one children were randomly selected in primary schools. According to criteria set by ICD-10, 118 children diagnosed as LD were classified into the study group. Four hundred and ninety one children were classified into the normal control group. Five hundred and forty two children were classified into the excellent control group. The study instruments included PRS (The pupil rating scale revised screening for learning disabilities), Conners' children behavior check-list taken by parents and YG-WR character check-list. Results The prevalence rate of LD in Chinese children was 10.3%. Significant differences were observed between LD and normally learning children, and between the LD group and the excellent group, in terms of scores of Conners' behavior check-list (P<0.05). The study further showed that individual differences in character between the LD group and the control groups still existed even after controlling individual differences in age, IQ, and gender. Some possible causal explanations contributing to LD were improper teaching by parents, low educational level of the parents, and children's characteristics and social relationships. Conclusion These data underscore the fact that LD is a serious national public health problem in China. LD is resulted from a number of factors. Good studying and living environments should be created for LD children.展开更多
目的了解男男性行为者(Men who have sex with men,MSM)自杀行为状况及其与社会特征的关系。方法采用应答驱动抽样(RDS)、关键知情人介绍、网上招募等方法在合肥市进行招募,运用自编的《健康状况调查表》,面对面调查了228名MSM。结果合...目的了解男男性行为者(Men who have sex with men,MSM)自杀行为状况及其与社会特征的关系。方法采用应答驱动抽样(RDS)、关键知情人介绍、网上招募等方法在合肥市进行招募,运用自编的《健康状况调查表》,面对面调查了228名MSM。结果合肥市MSM曾有自杀未遂行为报告率为11.4%;近一个月自杀意念报告率为10.5%;自杀计划报告率为3.9%。认为同性恋伤害了家庭、家庭拒绝同性恋、因同性恋被人殴打、有性病史、伙伴数少于3个和近半年月收入少于500元的人与自杀意念有统计学关联;家庭拒绝同性恋、已婚、受教育程度为高中及以下,去同性恋公厕参加活动和聚会、伙伴数少于3个与自杀未遂有统计学关联。结论减少社会对男性同性恋的歧视,可降低MSM自杀行为的发生。展开更多
基金financially supported by National Major Scientific Instrument Equipment Development Special(2011YQ060111)
文摘INTRODUCTION In recent years, with the gradual improvement of road construction, the rapid increase of the number of motor vehicles, vehicle emissions and the current poor vehicle performance, poor vehicle maintenance, higher emission factor and so on, air pollution caused by the traffic issues becomes the focus of people attention. The harmful substances are gradually accumulated to atmosphere particles surrounding roads due to dust particles （soil dusts, road dusts, construction dusts）, coal emissions, industrial emissions, vehicle emissions, biomass burning, secondary particles, which has a certain harmful influence to the atmosphere, soil and plants surrounding roads.
文摘Objective To investigate prevalence rate of learning disabilities (LD) in Chinese children, and to explore related risk factors, and to provide theoretical basis for preventing such disabilities. Methods One thousand and one hundred fifty one children were randomly selected in primary schools. According to criteria set by ICD-10, 118 children diagnosed as LD were classified into the study group. Four hundred and ninety one children were classified into the normal control group. Five hundred and forty two children were classified into the excellent control group. The study instruments included PRS (The pupil rating scale revised screening for learning disabilities), Conners' children behavior check-list taken by parents and YG-WR character check-list. Results The prevalence rate of LD in Chinese children was 10.3%. Significant differences were observed between LD and normally learning children, and between the LD group and the excellent group, in terms of scores of Conners' behavior check-list (P<0.05). The study further showed that individual differences in character between the LD group and the control groups still existed even after controlling individual differences in age, IQ, and gender. Some possible causal explanations contributing to LD were improper teaching by parents, low educational level of the parents, and children's characteristics and social relationships. Conclusion These data underscore the fact that LD is a serious national public health problem in China. LD is resulted from a number of factors. Good studying and living environments should be created for LD children.
文摘目的了解男男性行为者(Men who have sex with men,MSM)自杀行为状况及其与社会特征的关系。方法采用应答驱动抽样(RDS)、关键知情人介绍、网上招募等方法在合肥市进行招募,运用自编的《健康状况调查表》,面对面调查了228名MSM。结果合肥市MSM曾有自杀未遂行为报告率为11.4%;近一个月自杀意念报告率为10.5%;自杀计划报告率为3.9%。认为同性恋伤害了家庭、家庭拒绝同性恋、因同性恋被人殴打、有性病史、伙伴数少于3个和近半年月收入少于500元的人与自杀意念有统计学关联;家庭拒绝同性恋、已婚、受教育程度为高中及以下,去同性恋公厕参加活动和聚会、伙伴数少于3个与自杀未遂有统计学关联。结论减少社会对男性同性恋的歧视,可降低MSM自杀行为的发生。
