Introduction: This study aimed to investigate the epidemiology of genital trichomoniasis in Senegal. It sought to determine the prevalence and risk factors associated with this condition in Senegal. Methodology: The s...Introduction: This study aimed to investigate the epidemiology of genital trichomoniasis in Senegal. It sought to determine the prevalence and risk factors associated with this condition in Senegal. Methodology: The study took place at the university hospital of Pikine in the suburbs of Dakar. For each of the women recruited, socio-demographic data, clinical examination data and the results of direct examination of the vaginal sample were collected in a questionnaire designed for this purpose. Results: A total of 312 women with a mean age of 31.13 (±8.41) years were recruited in this study. The majority of these women (59.94%;95% CI = 54.25 - 65.38), were seen for an infectious diseases assessment. Leucorrhea (58.33%;95% CI = 52.63 - 63.83) and genital discharge on vaginal touch (99.36%;95% CI = 97.45 - 99.89) were the predominant signs on clinical examination. The overall prevalence of vaginal trichomoniasis after direct examination of the specimens was 1.28% (95% CI = 0.41 - 3.47). Only the distribution of this prevalence by occupation was statistically significant (p = 0.0004). Conclusion: The low prevalence of genital trichomoniasis in women and the risk factors associated with it found in this study, which took place about ten years ago, should prompt an update of the data to better define the problem in Senegal.展开更多
大都市郊区是城乡融合发展的前沿阵地,未来如何通过功能拓展满足城市和居民的多元化需求,如何通过功能的优化组合和协同发展实现自身振兴,是城乡融合发展实践中亟需解决的现实问题。文章以Web of Science、中国知网等为文献来源数据库,...大都市郊区是城乡融合发展的前沿阵地,未来如何通过功能拓展满足城市和居民的多元化需求,如何通过功能的优化组合和协同发展实现自身振兴,是城乡融合发展实践中亟需解决的现实问题。文章以Web of Science、中国知网等为文献来源数据库,运用文献调研法,系统梳理了相关文献,在客观辨识大都市城乡主体需求特征的基础上,梳理了大都市郊区乡村多功能的内涵、特征及分类,多功能演化动力机制与趋势,并对未来研究进行展望,结果表明:1)大都市郊区乡村多功能是为满足城乡居民各类需求、维持郊区乡村自身及所依托大都市融合共生和城乡协作发展所能提供的各类服务和功能的总和,率先响应城乡主体需求而分化和拓展。据此,基于乡村内生型和城镇引致型2类需求,设计了基于“三生”功能视角的大都市郊区乡村多功能分类体系;2)乡村多功能演化发展是自然地理系统、社会经济系统、政策与制度以及人类活动等共同作用的结果,其功能演化进程领先于一般乡村,率先呈现“生产功能现代化与特色化、生活功能便利化与人文化、生态功能绿色化与可持续”的发展趋势;3)从基础理论和分类体系构建、创新发展规划政策约束下乡村多功能分区识别方法、积极探索多功能协同的典型路径与模式、完善乡村多功能转型发展的政策支撑体系4个方面展望了大都市郊区乡村多功能未来协同演化的研究方向。展开更多
The city expansion is accelerated with the process of urbanization.This paper deals with the suburban green landscape architecture in the point view of ecological design so as to construct the reasonable and environme...The city expansion is accelerated with the process of urbanization.This paper deals with the suburban green landscape architecture in the point view of ecological design so as to construct the reasonable and environment-friendly suburban green landscape.展开更多
[Objective] The research aimed to evaluate the phosphorus balances in the main crop production systems in Shunyi District of Beijing City.[Method] By using the nutrient budget method,the phosphorus balances in the mai...[Objective] The research aimed to evaluate the phosphorus balances in the main crop production systems in Shunyi District of Beijing City.[Method] By using the nutrient budget method,the phosphorus balances in the main crop production systems(field crops,orchard and open-field vegetables) in Shunyi District of Beijing City were evaluated.Moreover,the main influence elements of phosphorus surplus in the farmland were analyzed.[Result] The positive phosphorus balances were found across all three crop production systems in the study period.The amount of phosphorus surplus [491.8 kg/(hm2·a)] in vegetables production system was significantly higher than that in field crops [82.7 kg/(hm2·a)] and orchard [129.5 kg/(hm2·a)] production systems(P0.05).But the amount of phosphorus surplus between the latter two had no significant difference(P0.05).Phosphorus surpluses in the production systems of field crops and vegetables respectively presented the extremely significant and positive relationship with the phosphorus input from chemical fertilizer and organic fertilizer(r was respectively 0.987 7 and 0.970 1).The phosphorus input from chemical fertilizer and organic fertilizer in the orchard production system both presented the extremely significant and positive relationship with the phosphorus surplus in the farmland(r was respectively 0.836 3 and 0.625 2).However,the phosphorus harvested by crops didn't significantly correlated to the phosphorus surplus in the farmland for all three crop production systems(P0.05).[Conclusion] The risk of phosphorus pollution potential in all three crop production system of Shunyi Distirct was high,especially in the vegetable production system.The phosphorus surpluses in the production systems of field crops and vegetables were mainly from the inputs of chemical fertilizer and organic fertilizer,respectively.However,the inputs of chemical fertilizer and organic fertilizer both significantly affected the phosphorus surplus in the orchard production system.展开更多
Leisure agriculture in Beijing suburb enjoys a promising prospect with wide customer sources and policy supports. The research performed analysis on man- agement status and employees of leisure agriculture-oriented in...Leisure agriculture in Beijing suburb enjoys a promising prospect with wide customer sources and policy supports. The research performed analysis on man- agement status and employees of leisure agriculture-oriented industrial parks in Daxing District by questionnaire survey in order to seek development strategies and promote transformation and updating of leisure agriculture in Daxing District. The re- sults showed that there are some problems in leisure agricultural parks in terms of software or hardware and some suggestions are proposed, including environment updating, product updating, brand updating, industry structure updating, scale updat- ing, organization updating, and talent updating, in order to promote social brand and improve economic profits of leisure agriculture in Daxing District.展开更多
Under the background of increasing aggravation of social transformation,the paper has discussed the influence of new campus construction in large cities on the expansion of high education zone and college suburbanizat...Under the background of increasing aggravation of social transformation,the paper has discussed the influence of new campus construction in large cities on the expansion of high education zone and college suburbanization.Based on Merton's structural functionalism,by taking Xindu District of Chengdu City for example,the positive and negative functions of college suburbanization in suburb urbanization have been analyzed through complex indexes of urbanization evaluation.Furthermore,it has analyzed positive functions on urbanization of suburb population,suburb economy,suburb residents' life style and values,as well as negative functions on government's administration and land resources' use.On this basis,countermeasures to transform negative effects into positive effects have been proposed.展开更多
文摘Introduction: This study aimed to investigate the epidemiology of genital trichomoniasis in Senegal. It sought to determine the prevalence and risk factors associated with this condition in Senegal. Methodology: The study took place at the university hospital of Pikine in the suburbs of Dakar. For each of the women recruited, socio-demographic data, clinical examination data and the results of direct examination of the vaginal sample were collected in a questionnaire designed for this purpose. Results: A total of 312 women with a mean age of 31.13 (±8.41) years were recruited in this study. The majority of these women (59.94%;95% CI = 54.25 - 65.38), were seen for an infectious diseases assessment. Leucorrhea (58.33%;95% CI = 52.63 - 63.83) and genital discharge on vaginal touch (99.36%;95% CI = 97.45 - 99.89) were the predominant signs on clinical examination. The overall prevalence of vaginal trichomoniasis after direct examination of the specimens was 1.28% (95% CI = 0.41 - 3.47). Only the distribution of this prevalence by occupation was statistically significant (p = 0.0004). Conclusion: The low prevalence of genital trichomoniasis in women and the risk factors associated with it found in this study, which took place about ten years ago, should prompt an update of the data to better define the problem in Senegal.
文摘大都市郊区是城乡融合发展的前沿阵地,未来如何通过功能拓展满足城市和居民的多元化需求,如何通过功能的优化组合和协同发展实现自身振兴,是城乡融合发展实践中亟需解决的现实问题。文章以Web of Science、中国知网等为文献来源数据库,运用文献调研法,系统梳理了相关文献,在客观辨识大都市城乡主体需求特征的基础上,梳理了大都市郊区乡村多功能的内涵、特征及分类,多功能演化动力机制与趋势,并对未来研究进行展望,结果表明:1)大都市郊区乡村多功能是为满足城乡居民各类需求、维持郊区乡村自身及所依托大都市融合共生和城乡协作发展所能提供的各类服务和功能的总和,率先响应城乡主体需求而分化和拓展。据此,基于乡村内生型和城镇引致型2类需求,设计了基于“三生”功能视角的大都市郊区乡村多功能分类体系;2)乡村多功能演化发展是自然地理系统、社会经济系统、政策与制度以及人类活动等共同作用的结果,其功能演化进程领先于一般乡村,率先呈现“生产功能现代化与特色化、生活功能便利化与人文化、生态功能绿色化与可持续”的发展趋势;3)从基础理论和分类体系构建、创新发展规划政策约束下乡村多功能分区识别方法、积极探索多功能协同的典型路径与模式、完善乡村多功能转型发展的政策支撑体系4个方面展望了大都市郊区乡村多功能未来协同演化的研究方向。
文摘The city expansion is accelerated with the process of urbanization.This paper deals with the suburban green landscape architecture in the point view of ecological design so as to construct the reasonable and environment-friendly suburban green landscape.
基金Supported by Sino-Germany Cooperation Project (BMBF FKZ:0330847B,MOST:2009DFA32710)Public Welfare Industry Special Item of Ministry of Agriculture (200803030)~~
文摘[Objective] The research aimed to evaluate the phosphorus balances in the main crop production systems in Shunyi District of Beijing City.[Method] By using the nutrient budget method,the phosphorus balances in the main crop production systems(field crops,orchard and open-field vegetables) in Shunyi District of Beijing City were evaluated.Moreover,the main influence elements of phosphorus surplus in the farmland were analyzed.[Result] The positive phosphorus balances were found across all three crop production systems in the study period.The amount of phosphorus surplus [491.8 kg/(hm2·a)] in vegetables production system was significantly higher than that in field crops [82.7 kg/(hm2·a)] and orchard [129.5 kg/(hm2·a)] production systems(P0.05).But the amount of phosphorus surplus between the latter two had no significant difference(P0.05).Phosphorus surpluses in the production systems of field crops and vegetables respectively presented the extremely significant and positive relationship with the phosphorus input from chemical fertilizer and organic fertilizer(r was respectively 0.987 7 and 0.970 1).The phosphorus input from chemical fertilizer and organic fertilizer in the orchard production system both presented the extremely significant and positive relationship with the phosphorus surplus in the farmland(r was respectively 0.836 3 and 0.625 2).However,the phosphorus harvested by crops didn't significantly correlated to the phosphorus surplus in the farmland for all three crop production systems(P0.05).[Conclusion] The risk of phosphorus pollution potential in all three crop production system of Shunyi Distirct was high,especially in the vegetable production system.The phosphorus surpluses in the production systems of field crops and vegetables were mainly from the inputs of chemical fertilizer and organic fertilizer,respectively.However,the inputs of chemical fertilizer and organic fertilizer both significantly affected the phosphorus surplus in the orchard production system.
基金Supported by Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions(No.YETP1485)The Ministry of Education of Humanities and Social Science project(No.14YJC630146)~~
文摘Leisure agriculture in Beijing suburb enjoys a promising prospect with wide customer sources and policy supports. The research performed analysis on man- agement status and employees of leisure agriculture-oriented industrial parks in Daxing District by questionnaire survey in order to seek development strategies and promote transformation and updating of leisure agriculture in Daxing District. The re- sults showed that there are some problems in leisure agricultural parks in terms of software or hardware and some suggestions are proposed, including environment updating, product updating, brand updating, industry structure updating, scale updat- ing, organization updating, and talent updating, in order to promote social brand and improve economic profits of leisure agriculture in Daxing District.
基金Supported by Social Science Planning Youth Project of Educational Department of Sichuan Province(09SB112)~~
文摘Under the background of increasing aggravation of social transformation,the paper has discussed the influence of new campus construction in large cities on the expansion of high education zone and college suburbanization.Based on Merton's structural functionalism,by taking Xindu District of Chengdu City for example,the positive and negative functions of college suburbanization in suburb urbanization have been analyzed through complex indexes of urbanization evaluation.Furthermore,it has analyzed positive functions on urbanization of suburb population,suburb economy,suburb residents' life style and values,as well as negative functions on government's administration and land resources' use.On this basis,countermeasures to transform negative effects into positive effects have been proposed.