An artificial aquatic food web (AAFW) system was designed to remove the non-point source pollutants in eutrophic Jiyu river. A certain amount of Scenedesmus obliquus and Daphnia pulex was cultured in the system for th...An artificial aquatic food web (AAFW) system was designed to remove the non-point source pollutants in eutrophic Jiyu river. A certain amount of Scenedesmus obliquus and Daphnia pulex was cultured in the system for the control of serious cyanobacterial bloom. The AAFW system was a continuous-flow system including one storage basin of 3 m3 capacity with polluted river water (the total nitrogen-TN: 4.49 mg⋅l-1;the total phosphorus-TP: 0.192 mg⋅l-1), one phytoplankton tank of 3 m3 capacity with an initial concentrations of S. obliquus about 5.8 × 103 ind⋅l-1, and one zooplankton growth chamber of 1.5 m3 capacity with an initial abundance of D. pulex about 22.5 ind⋅l-1. The system was optimized by setting hydraulic retention time of phytoplankton tank as 5 days and the experiments were operated for 45 days. Compared with the polluted river, TN and TP were removed about 28% and 47% by the AAFW system, respectively. The biomass of phytoplankton decrease from 6.33 mg⋅l-1 to 1.48 mg⋅l-1 and the percentage of cyanobacteria decrease from 43.93% to 2.36%, the biomass of Crustacean zooplankton increase from 0.34 mg⋅l-1 to 1.53 mg⋅l-1 and the percentage of D. pulex increase from 19.19% to 57.62%. Our results indicated that the AAFW system not only is an efficient, flexible system for reducing nutrient levels in tributary rivers, but also has an ability to control the cyanobacteria bloom and rebuilding the aquatic ecosystem from the polluted river water.展开更多
The Web system for Choose Your Own Adventure (CYOA) project utilizes the PHP and MySQL programming languages for an entertainment purpose. This project creates a fully-functional and se- cure online user system, in wh...The Web system for Choose Your Own Adventure (CYOA) project utilizes the PHP and MySQL programming languages for an entertainment purpose. This project creates a fully-functional and se- cure online user system, in which the accounts of the user system are stored in a MySQL database. Over the duration of this project, it is found that the PHP and MySQL programming languages are able to be employed for entertainment purposes, and they are both very effective in the field of entertainment. This project is meant to broaden the horizons of aspiring programmers in order to give them a glimpse into a possibility of using these programming languages in a scope that is commonly broached by game developers, but not programmers in the usual case.展开更多
Information security is the most important in the process of establishment of the system. This paper makes systematic summary according to the methodology and technology of the safety design in Quality Information Man...Information security is the most important in the process of establishment of the system. This paper makes systematic summary according to the methodology and technology of the safety design in Quality Information Management System (QIMS) based on B/S mode.展开更多
Long-term fertilization shapes the size and community composition of the soil food web by altering resource quantity and quality.Previous studies have examined specific components;however,comprehensive effects on the ...Long-term fertilization shapes the size and community composition of the soil food web by altering resource quantity and quality.Previous studies have examined specific components;however,comprehensive effects on the entire food web and underlying mechanisms remain unclear.In this study,a 30-year experiment in a rice–wheat cropping system was conducted to assess the effects of chemical fertilizer(NPK),manure(M),and their combination(NPKM),with unfertilized soil as the control.Biomass or abundance across key taxonomic and functional groups-including microorganisms,protozoa,nematodes,mites,collembolans,enchytraeids,and earthworms-was measured,and nematode ecological indices were calculated to evaluate bottom-up and top-down regulatory influences.Results showed that long-term fertilization increased resource inputs,thereby enhancing most functional groups.M and NPKM outperformed NPK across most groups,with relative increases compared to NPK ranging from 20.69 to 972.52%under M(average:241.62%)and from 26.55 to 792.30%under NPKM(average:189.02%).However,differences between M and NPKM were not significant,as high soil fertility diminished the divergence in their effects.Strong evidence for bottom-up control was observed,supported by positive correlations among functional groups and by increases in the enrichment index(51.27 and 28.49%)and enrichment footprint(11.80 and 47.17%)under M and NPKM relative to NPK.Partial least squares path modeling further confirmed that bottom-up forces predominantly determined food web structure and biomass.These findings indicate that sustained organic inputs,particularly when integrated with mineral fertilizers,effectively enhance soil food web complexity and size primarily through bottom-up regulatory mechanisms.展开更多
目的基于文献计量学分析骨质疏松症(osteoporosis,OP)相关代谢重编程研究的研究现状、热点及发展趋势,探讨代谢重编程在OP治疗中的应用,以期为该领域未来研究提供参考。方法以Web of Science核心合集(Web of Science Core Collecton,WoS...目的基于文献计量学分析骨质疏松症(osteoporosis,OP)相关代谢重编程研究的研究现状、热点及发展趋势,探讨代谢重编程在OP治疗中的应用,以期为该领域未来研究提供参考。方法以Web of Science核心合集(Web of Science Core Collecton,WoSCC)数据库为文献来源,采用CiteSpace 6.3.1软件进行可视化分析。结果共纳入906篇文献,2003—2025年间OP相关代谢重编程领域的发文量渐增,中国、美国分别是该领域总发文量和影响力最高的国家;上海交通大学是发文量和中心性较高的科研机构;学者Long FX发文量最多;Journal of Bone and Mineral Research期刊收录的文献被引用次数最多。differentiation(分化)、bone mineral density(骨密度)、metabolism(代谢)、osteoporosis(骨质疏松症)、glucose metabolism(葡萄糖代谢)、lipid metabolism(脂质代谢)等是核心关键词;gut microbiota(肠道微生物群)、mechanisms(机制研究)是最新研究热点。共被引频次排名前10的文献,主要探讨了葡萄糖代谢、骨钙素、Wnt信号通路、胰岛素与OP相关代谢重编程之间的关系。结论OP相关代谢重编程研究近年来持续增长,已成为骨代谢领域的重要方向。该领域热点集中在骨密度、葡萄糖代谢与脂质代谢调控,并逐渐拓展至肠道微生物群等跨系统机制研究。未来研究有望进一步揭示“代谢—骨—免疫”等多维互作网络,为OP治疗提供新靶点。展开更多
随着城市化进程加速,城市绿地土壤在生态系统服务(碳汇、雨洪调蓄、热环境调节)与环境质量改善中扮演关键角色。为刻画该领域的知识结构与演进脉络,检索了2005—2024年Web of Science(WoS)与中国知网(CNKI)文献,采用Bibliometrix与VOSvi...随着城市化进程加速,城市绿地土壤在生态系统服务(碳汇、雨洪调蓄、热环境调节)与环境质量改善中扮演关键角色。为刻画该领域的知识结构与演进脉络,检索了2005—2024年Web of Science(WoS)与中国知网(CNKI)文献,采用Bibliometrix与VOSviewer开展计量与可视化分析,结果显示:(1)发文量总体持续增长,WoS与CNKI分别检索到期刊论文492422篇;(2)美国与中国构成国际研究重心,中国自2015年前后在污染修复与绿色基础设施研究方向迅速崛起;(3)机构与作者合作呈现“多中心—弱社区化—区域增强”的格局,中国科学院、RCEES以及德国INRAE/洪堡大学、美国加州大学系统等是高产与关键节点;(4)研究热点由“重金属污染—土壤质量评价”逐步转向“生态修复—绿色基础设施—生态系统服务”,土壤微生物、碳储存与城市气候韧性成为近年研究突现前沿;(5)高被引研究强调多功能绿地基础设施与城市生态服务耦合,但土壤过程机理与服务评估在多尺度整合上仍存不足。该文提出“污染治理—功能提升—服务增益”的三维演化框架,建议以“过程—结构—服务”耦合的指标体系与跨尺度监测/模拟为突破口,支撑城市绿地土壤的可持续治理研究。展开更多
摘要An artificial aquatic food web (AAFW) system was designed to remove the non-point source pollutants in eutrophic Jiyu river. A certain amount of Scenedesmus obliquus and Daphnia pulex was cultured in the system for the control of serious cyanobacterial bloom. The AAFW system was a continuous-flow system including one storage basin of 3 m3 capacity with polluted river water (the total nitrogen-TN: 4.49 mg⋅l-1;the total phosphorus-TP: 0.192 mg⋅l-1), one phytoplankton tank of 3 m3 capacity with an initial concentrations of S. obliquus about 5.8 × 103 ind⋅l-1, and one zooplankton growth chamber of 1.5 m3 capacity with an initial abundance of D. pulex about 22.5 ind⋅l-1. The system was optimized by setting hydraulic retention time of phytoplankton tank as 5 days and the experiments were operated for 45 days. Compared with the polluted river, TN and TP were removed about 28% and 47% by the AAFW system, respectively. The biomass of phytoplankton decrease from 6.33 mg⋅l-1 to 1.48 mg⋅l-1 and the percentage of cyanobacteria decrease from 43.93% to 2.36%, the biomass of Crustacean zooplankton increase from 0.34 mg⋅l-1 to 1.53 mg⋅l-1 and the percentage of D. pulex increase from 19.19% to 57.62%. Our results indicated that the AAFW system not only is an efficient, flexible system for reducing nutrient levels in tributary rivers, but also has an ability to control the cyanobacteria bloom and rebuilding the aquatic ecosystem from the polluted river water.
摘要The Web system for Choose Your Own Adventure (CYOA) project utilizes the PHP and MySQL programming languages for an entertainment purpose. This project creates a fully-functional and se- cure online user system, in which the accounts of the user system are stored in a MySQL database. Over the duration of this project, it is found that the PHP and MySQL programming languages are able to be employed for entertainment purposes, and they are both very effective in the field of entertainment. This project is meant to broaden the horizons of aspiring programmers in order to give them a glimpse into a possibility of using these programming languages in a scope that is commonly broached by game developers, but not programmers in the usual case.
基金Acknowledgements: This work is supported by the Natural Science Foundation of Henan Province of China (No:0411015000).
摘要Information security is the most important in the process of establishment of the system. This paper makes systematic summary according to the methodology and technology of the safety design in Quality Information Management System (QIMS) based on B/S mode.
基金supported by the National Natural Science Foundation of China(40901116 and 31870501)。
摘要Long-term fertilization shapes the size and community composition of the soil food web by altering resource quantity and quality.Previous studies have examined specific components;however,comprehensive effects on the entire food web and underlying mechanisms remain unclear.In this study,a 30-year experiment in a rice–wheat cropping system was conducted to assess the effects of chemical fertilizer(NPK),manure(M),and their combination(NPKM),with unfertilized soil as the control.Biomass or abundance across key taxonomic and functional groups-including microorganisms,protozoa,nematodes,mites,collembolans,enchytraeids,and earthworms-was measured,and nematode ecological indices were calculated to evaluate bottom-up and top-down regulatory influences.Results showed that long-term fertilization increased resource inputs,thereby enhancing most functional groups.M and NPKM outperformed NPK across most groups,with relative increases compared to NPK ranging from 20.69 to 972.52%under M(average:241.62%)and from 26.55 to 792.30%under NPKM(average:189.02%).However,differences between M and NPKM were not significant,as high soil fertility diminished the divergence in their effects.Strong evidence for bottom-up control was observed,supported by positive correlations among functional groups and by increases in the enrichment index(51.27 and 28.49%)and enrichment footprint(11.80 and 47.17%)under M and NPKM relative to NPK.Partial least squares path modeling further confirmed that bottom-up forces predominantly determined food web structure and biomass.These findings indicate that sustained organic inputs,particularly when integrated with mineral fertilizers,effectively enhance soil food web complexity and size primarily through bottom-up regulatory mechanisms.
摘要目的基于文献计量学分析骨质疏松症(osteoporosis,OP)相关代谢重编程研究的研究现状、热点及发展趋势,探讨代谢重编程在OP治疗中的应用,以期为该领域未来研究提供参考。方法以Web of Science核心合集(Web of Science Core Collecton,WoSCC)数据库为文献来源,采用CiteSpace 6.3.1软件进行可视化分析。结果共纳入906篇文献,2003—2025年间OP相关代谢重编程领域的发文量渐增,中国、美国分别是该领域总发文量和影响力最高的国家;上海交通大学是发文量和中心性较高的科研机构;学者Long FX发文量最多;Journal of Bone and Mineral Research期刊收录的文献被引用次数最多。differentiation(分化)、bone mineral density(骨密度)、metabolism(代谢)、osteoporosis(骨质疏松症)、glucose metabolism(葡萄糖代谢)、lipid metabolism(脂质代谢)等是核心关键词;gut microbiota(肠道微生物群)、mechanisms(机制研究)是最新研究热点。共被引频次排名前10的文献,主要探讨了葡萄糖代谢、骨钙素、Wnt信号通路、胰岛素与OP相关代谢重编程之间的关系。结论OP相关代谢重编程研究近年来持续增长,已成为骨代谢领域的重要方向。该领域热点集中在骨密度、葡萄糖代谢与脂质代谢调控,并逐渐拓展至肠道微生物群等跨系统机制研究。未来研究有望进一步揭示“代谢—骨—免疫”等多维互作网络,为OP治疗提供新靶点。
摘要随着城市化进程加速,城市绿地土壤在生态系统服务(碳汇、雨洪调蓄、热环境调节)与环境质量改善中扮演关键角色。为刻画该领域的知识结构与演进脉络,检索了2005—2024年Web of Science(WoS)与中国知网(CNKI)文献,采用Bibliometrix与VOSviewer开展计量与可视化分析,结果显示:(1)发文量总体持续增长,WoS与CNKI分别检索到期刊论文492422篇;(2)美国与中国构成国际研究重心,中国自2015年前后在污染修复与绿色基础设施研究方向迅速崛起;(3)机构与作者合作呈现“多中心—弱社区化—区域增强”的格局,中国科学院、RCEES以及德国INRAE/洪堡大学、美国加州大学系统等是高产与关键节点;(4)研究热点由“重金属污染—土壤质量评价”逐步转向“生态修复—绿色基础设施—生态系统服务”,土壤微生物、碳储存与城市气候韧性成为近年研究突现前沿;(5)高被引研究强调多功能绿地基础设施与城市生态服务耦合,但土壤过程机理与服务评估在多尺度整合上仍存不足。该文提出“污染治理—功能提升—服务增益”的三维演化框架,建议以“过程—结构—服务”耦合的指标体系与跨尺度监测/模拟为突破口,支撑城市绿地土壤的可持续治理研究。