By analyzing the introduction and ecological adaptability of Ligustrum japonicum“Howardi”in Shijiazhuang area,it is concluded that L.japonicum“Howardi”has the advantages of strong resistance,few diseases and pests...By analyzing the introduction and ecological adaptability of Ligustrum japonicum“Howardi”in Shijiazhuang area,it is concluded that L.japonicum“Howardi”has the advantages of strong resistance,few diseases and pests,and can overwinter in the open field in Shijiazhuang.Because of bright leaf color,it can be used as a hedge or collocated with other plants in the landscape,and has a good and extensive landscape application prospect.展开更多
In order to comprehensively understand the varieties of ornamental peaches in Shijiazhuang City and their application status,a systematic survey was conducted on the ornamental peach varieties in Shijiazhuang.The resu...In order to comprehensively understand the varieties of ornamental peaches in Shijiazhuang City and their application status,a systematic survey was conducted on the ornamental peach varieties in Shijiazhuang.The results showed that there were 27 ornamental peach varieties in Shijiazhuang,including 1 species of mountain peach and 26 species of ornamental peaches.According to the systematic observation and analysis of their branch types,flower types,flower colors,and application frequency,the ornamental peaches in Shijiazhuang City belonged to the ecological northern peaches,which were characterized by early flowering phase,long flowering period,and rich flower color.Then problems existing in the application of ornamental peaches were explored,and corresponding solutions and suggestions were proposed.展开更多
The paper summarized the development course of Shijiazhuang Zoo from the aspects of origin, animal feeding and management and venue construction, and showed the achievements of Shijiazhuang Zoo in feeding and reproduc...The paper summarized the development course of Shijiazhuang Zoo from the aspects of origin, animal feeding and management and venue construction, and showed the achievements of Shijiazhuang Zoo in feeding and reproduction, scientific research and communication, venue renova-tion and expansion in different periods. The problems existing in the development of Shijiazhuang Zoo were put forward, and the future development was prospected.展开更多
利用wx AMPS软件构建了高效Ga In P/Ga As/Ge太阳电池的中电池模型,并对电池抗辐照性能进行模拟研究。模拟发现,当辐照缺陷密度较小时,缺陷对中电池的电性能影响较小;当缺陷密度较大时,电性能的下降与电子注量值的对数成正比。计算电池...利用wx AMPS软件构建了高效Ga In P/Ga As/Ge太阳电池的中电池模型,并对电池抗辐照性能进行模拟研究。模拟发现,当辐照缺陷密度较小时,缺陷对中电池的电性能影响较小;当缺陷密度较大时,电性能的下降与电子注量值的对数成正比。计算电池的I-V和量子效率谱(QE曲线)可知,电池电性能的下降直接对应于量子效率的下降、饱和暗电流的增强以及并联电阻的衰降。模拟结果与试验结果的对比显示,在各子电池均匀损伤的假定下,1 Me V电子辐照的缺陷引入率约为0.81。展开更多
文中提出了一种基于萤火虫算法的单交叉口交通信号配时优化方法.将道路级交通指数数据(travel time index,TTI)、交通延误时间、排队长度与车辆平均碳排放量四个目标进行优化,通过萤火虫算法对单交叉口信号灯进行配时求解,并对VISSIM仿...文中提出了一种基于萤火虫算法的单交叉口交通信号配时优化方法.将道路级交通指数数据(travel time index,TTI)、交通延误时间、排队长度与车辆平均碳排放量四个目标进行优化,通过萤火虫算法对单交叉口信号灯进行配时求解,并对VISSIM仿真平台进行二次开发,验证了方法的节能效益.研究结果表明:在单交叉口交通信号配时优化方案下,交叉口平均排队长度较未部署算法下降了28.6%,最大排队长度下降29.7%,等待时间下降33.3%,路口吞吐量上升11.8%,TTI指数(道路交通指数)降低43.4%,车均碳排放量下降32.12%,对降低单交叉口的排放效果显著.展开更多
In order to accurately predict the flowering period of peach blossoms and provide visitors with the best viewing period of peach blossoms, the regression model was used to establish the forecasting model of the bloomi...In order to accurately predict the flowering period of peach blossoms and provide visitors with the best viewing period of peach blossoms, the regression model was used to establish the forecasting model of the blooming of ornamental peaches according to the relevant laws of phenology. The forecasting model could accurately predict the flowering period and the best viewing period of peach blossoms.展开更多
Based on the observation and record of trapping effect of Cinara pinea in urban green space for three consecutive years,the occurrence regularity and causes of C.pinea in urban green space were summarized.The results ...Based on the observation and record of trapping effect of Cinara pinea in urban green space for three consecutive years,the occurrence regularity and causes of C.pinea in urban green space were summarized.The results showed that the quantity of C.pinea was different in different months from August to December,and the damage degree of C.pinea was reduced in the next spring.During rainy and snowy weather from August to December,the number of C.pinea was relatively large,and the egg quantity of C.pinea in February and the number of C.pinea in April were relatively low.Some suggestions on the prevention and control of C.pinea in urban parks were put forward.展开更多
中国糖尿病患病人数逐年上升,糖尿病及其并发症会造成巨大的个人及社会负担。近年研究表明,适度的寒冷暴露可能会改善机体的胰岛素敏感性,并防止肥胖相关的胰岛素抵抗和高血糖症的发展。该文旨在通过横断面研究方法,初步探究冬季室内热...中国糖尿病患病人数逐年上升,糖尿病及其并发症会造成巨大的个人及社会负担。近年研究表明,适度的寒冷暴露可能会改善机体的胰岛素敏感性,并防止肥胖相关的胰岛素抵抗和高血糖症的发展。该文旨在通过横断面研究方法,初步探究冬季室内热环境与居民糖尿病患病风险之间的潜在关联。根据不同采暖方式,将冬季室内热环境划分为不同水平,其中居民糖尿病患病数据分别来源于中国糖尿病患病率横断面研究数据、历年统计年鉴数据及中国健康与养老追踪调查(China Health and Retirement Longitudinal Study,CHARLS)数据库。在省级尺度纳入17个省(自治区、直辖市)的研究结果,结果表明冬季室内热环境与糖尿病患病显著相关(相关系数为0.505,P=0.039)。在个体尺度共纳入研究对象8403人,分析结果表明,冬季室内热环境、性别、年龄和身体质量指数(body mass index, BMI)与糖尿病相关(P<0.050)。本研究从较长的时间尺度上为冷暴露与糖尿病的实验室研究提供了实际环境中的支持与佐证,并对夏热冬冷地区建筑室内热环境营造提供一定借鉴和参考。展开更多
The midpoint impact assessment methodology and several weighting methods that are currently used by most building Life cycle assessment (LCA) researchers in China, still have some shortcomings. In order to make the ev...The midpoint impact assessment methodology and several weighting methods that are currently used by most building Life cycle assessment (LCA) researchers in China, still have some shortcomings. In order to make the evaluation results have better temporal and spatial applicability, the endpoint impact assessment methodology was adopted in this paper. Based on the endpoint damage oriented concept, four endpoints of resource exhaustion, energy exhaustion, human health damage and ecosystem damage were selected according to the situation of China and the specialties of the building industry. Subsequently the formula for calculating each endpoint, the background value for normalization and the weighting factors were defined. Following that, an endpoint damage oriented model to evaluate the life cycle environmental impact of buildings in China was established. This model can produce an integrated indicator for environmental impact, and consequently provides references for directing the sustainable building design.展开更多
文摘By analyzing the introduction and ecological adaptability of Ligustrum japonicum“Howardi”in Shijiazhuang area,it is concluded that L.japonicum“Howardi”has the advantages of strong resistance,few diseases and pests,and can overwinter in the open field in Shijiazhuang.Because of bright leaf color,it can be used as a hedge or collocated with other plants in the landscape,and has a good and extensive landscape application prospect.
基金Sponsored by Funded Project by Hebei Provincial Department of Housing&Urban-Rural Development(2013-153)
文摘In order to comprehensively understand the varieties of ornamental peaches in Shijiazhuang City and their application status,a systematic survey was conducted on the ornamental peach varieties in Shijiazhuang.The results showed that there were 27 ornamental peach varieties in Shijiazhuang,including 1 species of mountain peach and 26 species of ornamental peaches.According to the systematic observation and analysis of their branch types,flower types,flower colors,and application frequency,the ornamental peaches in Shijiazhuang City belonged to the ecological northern peaches,which were characterized by early flowering phase,long flowering period,and rich flower color.Then problems existing in the application of ornamental peaches were explored,and corresponding solutions and suggestions were proposed.
基金Supported by Science and Technology Project of Department of Housing&Urban-Rural Development of Hebei Province(2013-153)。
文摘The paper summarized the development course of Shijiazhuang Zoo from the aspects of origin, animal feeding and management and venue construction, and showed the achievements of Shijiazhuang Zoo in feeding and reproduction, scientific research and communication, venue renova-tion and expansion in different periods. The problems existing in the development of Shijiazhuang Zoo were put forward, and the future development was prospected.
文摘利用wx AMPS软件构建了高效Ga In P/Ga As/Ge太阳电池的中电池模型,并对电池抗辐照性能进行模拟研究。模拟发现,当辐照缺陷密度较小时,缺陷对中电池的电性能影响较小;当缺陷密度较大时,电性能的下降与电子注量值的对数成正比。计算电池的I-V和量子效率谱(QE曲线)可知,电池电性能的下降直接对应于量子效率的下降、饱和暗电流的增强以及并联电阻的衰降。模拟结果与试验结果的对比显示,在各子电池均匀损伤的假定下,1 Me V电子辐照的缺陷引入率约为0.81。
文摘文中提出了一种基于萤火虫算法的单交叉口交通信号配时优化方法.将道路级交通指数数据(travel time index,TTI)、交通延误时间、排队长度与车辆平均碳排放量四个目标进行优化,通过萤火虫算法对单交叉口信号灯进行配时求解,并对VISSIM仿真平台进行二次开发,验证了方法的节能效益.研究结果表明:在单交叉口交通信号配时优化方案下,交叉口平均排队长度较未部署算法下降了28.6%,最大排队长度下降29.7%,等待时间下降33.3%,路口吞吐量上升11.8%,TTI指数(道路交通指数)降低43.4%,车均碳排放量下降32.12%,对降低单交叉口的排放效果显著.
文摘In order to accurately predict the flowering period of peach blossoms and provide visitors with the best viewing period of peach blossoms, the regression model was used to establish the forecasting model of the blooming of ornamental peaches according to the relevant laws of phenology. The forecasting model could accurately predict the flowering period and the best viewing period of peach blossoms.
基金Hebei Provincial Construction Science and Technology Research Project (2019-2072)。
文摘Based on the observation and record of trapping effect of Cinara pinea in urban green space for three consecutive years,the occurrence regularity and causes of C.pinea in urban green space were summarized.The results showed that the quantity of C.pinea was different in different months from August to December,and the damage degree of C.pinea was reduced in the next spring.During rainy and snowy weather from August to December,the number of C.pinea was relatively large,and the egg quantity of C.pinea in February and the number of C.pinea in April were relatively low.Some suggestions on the prevention and control of C.pinea in urban parks were put forward.
文摘中国糖尿病患病人数逐年上升,糖尿病及其并发症会造成巨大的个人及社会负担。近年研究表明,适度的寒冷暴露可能会改善机体的胰岛素敏感性,并防止肥胖相关的胰岛素抵抗和高血糖症的发展。该文旨在通过横断面研究方法,初步探究冬季室内热环境与居民糖尿病患病风险之间的潜在关联。根据不同采暖方式,将冬季室内热环境划分为不同水平,其中居民糖尿病患病数据分别来源于中国糖尿病患病率横断面研究数据、历年统计年鉴数据及中国健康与养老追踪调查(China Health and Retirement Longitudinal Study,CHARLS)数据库。在省级尺度纳入17个省(自治区、直辖市)的研究结果,结果表明冬季室内热环境与糖尿病患病显著相关(相关系数为0.505,P=0.039)。在个体尺度共纳入研究对象8403人,分析结果表明,冬季室内热环境、性别、年龄和身体质量指数(body mass index, BMI)与糖尿病相关(P<0.050)。本研究从较长的时间尺度上为冷暴露与糖尿病的实验室研究提供了实际环境中的支持与佐证,并对夏热冬冷地区建筑室内热环境营造提供一定借鉴和参考。
基金the National "11th Five-year" Technical Supporting Project (Grant No. 2006BAJ01A10)
文摘The midpoint impact assessment methodology and several weighting methods that are currently used by most building Life cycle assessment (LCA) researchers in China, still have some shortcomings. In order to make the evaluation results have better temporal and spatial applicability, the endpoint impact assessment methodology was adopted in this paper. Based on the endpoint damage oriented concept, four endpoints of resource exhaustion, energy exhaustion, human health damage and ecosystem damage were selected according to the situation of China and the specialties of the building industry. Subsequently the formula for calculating each endpoint, the background value for normalization and the weighting factors were defined. Following that, an endpoint damage oriented model to evaluate the life cycle environmental impact of buildings in China was established. This model can produce an integrated indicator for environmental impact, and consequently provides references for directing the sustainable building design.
