~1H NMR Investigation of Supramolecular Complex between β-Cyclodextrin and Cholesterol

A supramolecular complex between β-cyclodextrin and cholesterol was synthesized and characterized via proton 1H NMR spectroscopy. In the supramolecular complex,the stoichiometric proportion of β-cyclodextrin to cholesterol is 1:2. The possible conformation of the supramolecular complex was depicted according to the chemical shift variance of proton 1H NMR of the host and guest molecules inside the inclusion complex. Removal efficiency of cholesterol complexed by β-cyclodextrin in our work is increased to a remarkable extent. This result can be applied in the field of drug development to reduce cholesterol in blood and other human organs.     

Support Operator’s Fault Diagnosis of Complex Plant Systemthrough Multilevel Flow Model and Ecological Interface Design

1 IntroductionModern man-made systems have become more and morecomplex to achieve many automatic and intelligent tasksinstead of be executed by human beings .However ,since theprimaryrole of the systemoperationshould be human beings ,the challenge tothe operating support systemhas beenledtoa paradoxical situation. They should be complex themselvestotake charge of the complex interaction of the systemandsolve such difficult tasks such as fault diagnosis and processcontrol inone hand,and alsothe…     

Support Operator＇s Fault Diagnosis of Complex Plant System through Multilevel Flow Model and Ecological Interface Design

The paper describes a new human-interface system design method by combining the conception of Multilevel Flow Model and Ecological Interface Design to support operators＇ fault diagnosis in the complex plant system. Modern man-made systems are always achieving many complex automatic and intelligent tasks so that they are becoming more and more complex and can be hardly understood by operators, who should be the primary role in system operating. This situation presents a big challenge to the operating support system that it should present the complex system in a direct and clear way to operators to and make operators understand the internal interaction of the system especially in the abnormal status to ensure the operating safety. The Multilevel Flow Model based on the idea of ＂Abstraction Hierarchy＂, aiming at decompressing a system by means-end and part-whole way, can be used to represent a complex system in a standard way and perform intelligent operating tasks such as fault diagnosis and process control. Ecological Interface Design, which based on the human cognitive properties, can present the internal interaction of the system in a direct way. This paper combines this two interface design conceptions to achieve two aspects, intelligent fault diagnosis and direct presentation of causal relationship of operating parameters, to support operators＇ fault diagnosis in complex plant system. The design method is applied to a PWR power plant in this paper as an application example.     

Remarks on Psychological Analyses of Sons and Lovers

Sons and Lovers is considered to be D.H.Lawrene's first masterpiece.Social critique and psychological exploration are two props of creative works of D.H.Lawrence.There are two points of view in literature world about the novel Sons and Lovers:One is its critical function which criticizes the destroy of capitalistic industrial civilization to human body and mind.The other is psychological analyses.The tragedy of the characters attributes to the Oedipus complex.     

实现人类连接组学的探索科学（英文）

In recent years,the confluence of technological advances in human neuroimaging and quantitative tools for understanding the structure and dynamics of complex systems have led to the emergence of new approaches toward understanding human brain function.These new approaches conceptualize the brain as a network organized across different spatial and temporal scales—a distributed com-     

Big data analysis of the human brain’s functional interactions based on fMRI

The human brain is a huge, complex system generating brain activity. The exploration of human brain function using functional magnetic resonance imaging （fMRI） is a promising method to understand brain activity. However, the complexity of the big data generated by fMRI facilitates the analysis of various levels of human brain activity, such as the distribution of neural represen- tations, the interaction between different regions, and the dynamic interaction over time. These different levels can depict distinct prospects of the human brain activity, and considerable progress has been achieved. In the future, more big data analysis methods combining advances in computer science, including larger-scale computing, machine learning, and graph theory, will promote the understanding of the human brain.     

Interaction of cellular-localized signature modules in response to prostate cancer

Rapid progress in high-throughput biotechnologies (e.g. microarrays) and exponential accumulation of gene functional knowledge makes it promising for systematic understanding of complex human diseases at the functional modules level. Current modular categorizations can be defined and selected more specifically and precisely in terms of both biological processes and cellular locations, aiming at uncovering the modular molecular networks highly relevant to cancers. Based on Gene Ontology, we identifed the functional modules enriched with differentially expressed genes and characterized by biological processes and specific cellular locations. Then, according to the ranking of the disease discriminating abilities of the pre-selected functional modules, we further defined and filtered signature modules which have higher relevance to the cancer under study. Applications of the proposed method to the analysis of a prostate cancer dataset revealed insightful biological modules.     

Pb isotopic geochemical study on the crustal structure of Tongbaishan

Pb isotopic composition of the Tongbai complex, distributed in the Tongbaishan to the west of the Dabieshan, ranges between the Dabie core complex and the Dabie ultral-high pressure (UHP) metamorphic complex, the latter having more radiogenic Pb isotopic composition than the former. Granites from the Jigongshan pluton, which intruded mainly into the Tongbai complex, are distinct from the Tongbai complex but similar to the Dabie core complex in Pb isotopic composition, showing that the magma of the Jigongshan granites was derived from the partial melting of the Dabie core complex. According to Pb isotopic compositional variation model in the vertical crustal section and magma source from the Jigongshan pluton, it is suggested that the Tongbai complex was an upper rock serial of the Dabie core complex, which is beneath the Dabie UHP metamorphic complex in the crustal structure of the Tongbai-Dabie orogenic belt. The Tongbai complex was not well preserved in the Dabie area due to the high exhumed crustal section. However, the crustal section in the Tongbai area was exhumed less than that in the Dabie area, and the deep crust in the Tongbai area still contains the basement composition similar to the Dabie core complex. Therefore, the crustal basements from the Dabie to Tongbai areas are united. The present distribution of the basement blocks in different locations of the Tongbai-Dabie orogenic belt reflects different exposure of the crustal section.     

青藏高原草地生态系统之服务功能

青藏高原草地生态系统服务功能体现在3个方面,即生态功能、生产功能和生活功能。生态功能为系统所固有,是系统维持和发展的基础;生产功能是影响草地生态系统服务功能发生改变的触发点;生活功能主要取决于生态功能和生产功能的平衡关系和管理状况,体现系统综合发展水平。充分理解和把握“三生功能”之间的互作关系,对青藏高原草地生态系统的维系与发展具有重要指导意义。     

水岸带研究综述

水岸生态系统是介于陆地与河流、湖泊、溪流或水塘之间的过渡地带,是非常重要的典型的生态交错区。水岸带具有重要的生态、社会、经济和旅游价值。水岸带研究以生态学、水文学和地貌学为基础涉及多种学科和技术。我国城市水岸多使用混凝土等人工建筑材料,结果导致水岸植物群落丧失,破坏了水岸连接水生生态系统和陆地生态系统的纽带作用,其生态作用越来越小。由于自然和人为因素的影响,退化水岸带的生态恢复与重建较为复杂,我国水岸带及其退化生态系统重建理论与实践研究均较为薄弱。为此,笔者总结目前国内外有关水岸生态系统的研究现状及未来发展方向,对我国水岸生态系统的研究提供参考。     

天山大峡谷国家森林公园土地利用变化及生态系统服务价值研究

通过对1990年、2000年、2010年和2018年4期遥感解译的土地利用数据,采用土地利用动态度、生态系统服务价值评价和敏感性分析等方法,分析了研究区的土地利用变化及生态系统服务功能,同时以ArcGIS软件为支撑,探讨了天山大峡谷国家森林公园在不同时期内的土地利用变化对生态系统服务(ESV)的影响.研究结果表明:1990—2018年天山大峡谷国家森林公园草地和农村居民点面积呈增加趋势,其他土地利用类型面积呈减少趋势; 2018年生态系统服务总价值比1990年生态系统服务总价值减少28.35万元; 不同土地类型生态敏感性均小于1,生态系统服务价值对单位面积的生态系统服务价值系数不敏感.研究区域土地利用总体处于发展期,由于生态系统服务总价值整体减少,所以其生态环境受到严峻挑战.     

乡村聚落用地变化类型及其优化调控——以贵阳市东风镇为例

乡村聚落是农村居民的生活空间,也是乡村振兴和优化调控的基本单元.基于斑块形态和面积等角度划分乡村聚落类型,以总变化率和年均净变化率两个指标将东风镇村级研究区划分为增长型活跃区、增减平衡型活跃区、减少型活跃区和变化迟缓型区.结果表明:东风镇乡村聚落的斑块数量呈现逐年增多的趋势,但增幅在下降,乡村聚落景观出现了破碎化现象,...     

山区县域土地利用变化及其生态系统服务价值响应——以嵩县为例

随着人口持续增长及土地利用行为的不断变化,生态环境遭受不断干扰和破坏,生态系统承载力逐渐减弱。山区是生态系统最为脆弱的地理类型之一,对其因土地利用变化所引起的生态系统价值响应研究显得尤为迫切。本研究基于遥感卫星影像解译获得山区县域土地利用分类数据,利用生态系统因子权重赋值和空间自相关分析等方法,深入探讨了豫西嵩县1990至2019年间生态系统服务价值的时空演化及其空间自相关特征。研究结论表明：（1）嵩县草地面积变化幅度最高,耕地面积增幅最高,未利用地变化率最高,建设用地和水域增幅明显。（2）生态系统服务价值整体呈现出先快速增加后缓慢减少的趋势。其中,林地、水域、县域生态系统服务价值（Ecosystem Service Value,简称ESV）变化过程整体相似,均在1990至2000年间出现小幅增长趋势,随后持续缓慢下降。水文调节、气候调节、土壤保持、气体调节、净化环境和维持生物多样性等功能占生态系统服务价值总价值超过87%,对嵩县土地生态系统产生决定性作用。（3）ESV整体呈现出以下特征：陆浑水库及伊河流域为高生态系统服务价值片区,南部片区的ESV值稍高于北部片区,区域差异显著。在县域内,ESV在空间分布上具有很强的自相关性,且在2010年以后出现持续增强的趋势。随着城镇建设用地扩张、农田耕地持续开垦,ESV损失片区开始在各乡镇蔓延,其主要原因是嵩县城乡规划政策、产业定位等。     

基于灾后重建的国土空间生态优化——以芦山地震灾区灾后重建为例

在GIS支持下, 基于芦山地震灾区生态环境敏感性以及生态系统服务功能重要性评估, 研究灾区恢复生态系统功能和优化国土空间开发格局的方法, 提出灾后重建国土空间优化开发格局的方案, 指出各个区域的保护措施和发展方向。按照主要功能定位, 优化后的国土空间分为生态保护区、生态农业发展区和生态城镇复合发展区3个区域: 1) 芦山地震灾区生态保护区, 占区域总面积的80.6％, 以维护生态安全为目标, 保护和恢复区域重要的生态功能, 实施生态修复; 2) 生态农业发展区, 约占区域总面积的 13.4%, 作为重要的农业生产功能区, 其主导生态功能为农产品供给保障, 同时兼具土壤保持功能; 3) 生态城镇复合发展区, 仅占区域总面积的 6.0%, 是区域城镇化和产业发展的核心区域, 应依据当地发展需求, 进行生态城镇化建设, 同时注重生态保护。     

人类活动对河流生态系统的影响

介绍了流域水利工程建设、农业生产及城市化对河流生态系统的影响。其中 ,大坝等水利工程造成了对河流的人为分割以及径流模式的改变 ,损害了河流廊道的物质、能量、物种输移通道的能力。现代农业生产在挤占漫滩、阶地的同时 ,还由于大量使用化肥、农药造成了难以解决的非点源污染问题。城市化进程由于地面不透水层数量的增加显著地改变了城市地区的径流特性 ,还造成了城市河流生态价值的严重损失 ;这些活动都直接或间接地改变或损害了河流生态系统的结构、功能。出于有效进行生态恢复的目的 ,强调树立流域生态观念的必要性 ,建议从流域的角度出发进行综合整治     

基于InVEST模型的生态系统服务功能价值评估研究框架

生态系统服务功能定量评估是合理有效利用自然资源、保护生态环境、协调自然与人类可持续发展的基础,也是生态补偿核算及生态系统综合管理的理论依据.国内外学者在生态系统服务功能分类和定量评估方面做了大量工作,目前众多分类中以MA的分类得到普遍认可;生态系统服务功能定量评估亦有诸多方法,其中物质量、价值量和能值方法估算结果动态性不足,且空间化表达和分析比较困难;RS和GIS能实现部分功能空间化动态评估,但对旅游价值、科研文化价值估算方面则略显不足;基于GIS平台的InVEST模型以空间数据为基础,量化多种生态系统服务功能并以地图的形式表达出来,实现了生态系统服务功能定量评估的空间化和动态化,是生态系统服务功能定量评估的新方法和新工具.     

生态系统服务功能的保护与可持续发展

生态系统服务功能是指生态系统与生态过程所形成及所维护的人类赖以生存的自然环境条件与效用,它不仅为人类提供了食品、医药及其他生产生活原料,更重要是的是维护了人类赖以生存的生命支持系统,维护生命物质的生物地化循环与水文循不,维持生物物种与遗传多样性,净化环境,维护大气化学的平衡与稳定,生态系统服务于对于地球的持续使用和人类社会的持续发展起到决定性作用。     

华阳河湖群地区土地利用变化对生态系统服务价值的影响?

以华阳河湖群地区为研究对象,采用1990、2002、2010年3期的土地利用数据,运用Costanza方法,从生态系统服务功能的角度,结合中国生态服务价值当量因子表,分析了研究区土地利用变化及其对生态服务价值的影响.结果表明:1)1990—2010年间,耕地、湿地、水域和草地均减少,林地和建设用地大幅度增加,土地利用强度处于上升阶段;2)近20年来,研究区生态系统服务总价值从34.197亿元下降到31.17亿元,共下降了3.027亿元,下降趋势明显,主要是生态价值系数较高的湖泊面积减少所致,水域对研究区生态系统服务总价值贡献率最大;3)从单项生态系统服务功能看,研究区水源涵养、废物处理等服务性功能价值远大于其生产性功能价值,该区域在未来发展和规划中应更注重自然资源的保护,更多的保护水域、林地等高生态价值的生态用地,以实现人口、资源与环境的可持续发展.