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Study on the fractionation of inorganic phosphates in some paddy soils of Hunan Province

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Chinese Rice Research Newsletter 1999年第2期7卷 8-9页

作者： HUANG yunxiang zhang Yangzhu ZOU Yingbin Hunan Agri Univ,Changsha 410128,China

Hunan Province of China,lying in the centralof subtropical zone,is one of the major pro-duction areas of double-season *** pad-dy is the main agricultural soil of the *** samples of plough horizon（0-20cm）ofmajor types of paddy soils were collected be- fore cultivation in the spring of *** chemical fractions of inorganic phosphatesand the relationships between inorganic phos- phates and olsen-available P in the soils werestudied by using the fractionation system of in-organic phosphates proposed by JIANG Baifanet al.

关键词： Study on the fractionation of inorganic phosphates in some paddy soils of Hunan Province

Paleogene-Neogene stratigraphic realm and tectonic-sedimentary evolution of the Qilian Mountains and their surrounding areas

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Science China Earth Sciences 2017年第5期60卷 992-1009页

作者： YANG LiRong LI JianXing YUE LePing WANG HongLiang GUO HuaiJun ZHU XiaoHui ZHU Tao DU Kai zhang Rui zhang yunxiang GONG HuJun State Key Laboratory of Continental Dynamics Department of Geology Northwest University Ministry of Land and Resources Key Laboratory of Magmatism Mineralization and Prospecting Xi'an Geological Survey CenterChina Geological Survey

The Cenozoic uplift of Qilian Mountains is critical to comprehend the uplift and extension of the Tibet Plateau as well as the formation of the first and second steps in China's topography. This study summarized dynamic stratigraphic realm comprehensively on the basis of stratigraphic correlation of different Cenozoic sedimentary basin regions of the Qilian Mountains and adjacent mountains. This facilitated the re-creation of the tectonic-sedimentary evolutionary process of the Qilian Mountains and their surrounding areas. The results indicate that during the Early Paleogene(Paleocene-Eocene), the Qilian Mountains were part of an uplift realm. During the Oligocene, Guide-Xining-Lanzhou-Linxia sag basin at the northern margin of the West Qinling Mountains came into being and was subjected to sedimentation. The Suli Basin located between the North and South Qilian paleo-uplifts began to form and undergo sedimentation. Intracontinental orogenic extrusion and basin detachment occurred at the Qilian Mountains during the Miocene, which caused successive uplifts of various mountains, including the Laji, South Qinghai,Jishi, Liupan, and South Shule Mountains. Until Pliocene, Qilian Mountains uplifted continuously and resulted in the shrink,extinction and being eroded of the basins, and aeolian red clay started to accumulate.

关键词： Paleogene-Neogene Stratigraphic realm Tectonic-sedimentary evolution Qilian Mountain Tibet Plateau

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社区微更新中政社共同生产的类型与生成逻辑——基于上海市Y社区的实践案例分析

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探索 2020年第3期 127-141页

作者：容志张云翔上海师范大学哲学与法政学院上海200233

成功的社区微更新往往是政府与社会共同生产的结果,但现有研究对于这一微观过程中的互动行为和生成机理尚语焉不详。通过对三个案例的深入研究发现,社区微更新的整体进程与具体形态受到动力机制和政社互动方式的共同影响,而政府的自我... 详细信息

成功的社区微更新往往是政府与社会共同生产的结果,但现有研究对于这一微观过程中的互动行为和生成机理尚语焉不详。通过对三个案例的深入研究发现,社区微更新的整体进程与具体形态受到动力机制和政社互动方式的共同影响,而政府的自我定位和行动策略型塑着动力机制,进而产生了不同类型的合作生产。路径差异不仅导致了微更新的效果差别,而且对社会行动网络施加着不同影响。对政府来说,需要更加灵活地选择管理策略,在共同学习、互相协作中推进社区微更新项目及社区的自治和共治。

关键词：社区微更新社区治理共同生产政府社会

Kinetic Study of Atom Transfer Radical Polymerization of 2-(N,N-Dimethylamino)ethyl Methacrylate

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Chinese Journal of Chemical Engineering 2004年第2期12卷 208-213页

作者：江成发张允湘 Department of Chemical Engineering Sichuan University Chengdu 610065 China

A kinetic model was developed to describe the atom transfer radical polymerization (ATRP) of 2(N,N-dimethylarnino) ethyl methacrylate (DMAEMA). The model was based on a polymerization mechanism, which included the atom transfer equilibrium for primary radical, the propagation of growing polymer radical, and the atom transfer equilibrium for the growing polymer radical. An experiment was carried out to measure the conversion of monomer, the number-average molecular weight of polymer and molecular weight distribution for the ATRP process of DMAEMA. The experimental data were used to correlate the kinetic model and rate constants were obtained. The rate constants of activation and deactivation in the atom transfer equilibrium for primary radical are 1.0 x 10(4) L(.)mol(-1.)s(-1) and 0.04 L(.)mol(-1.)s(-1), respectively. The rate constant of the propagation of growing polymer radical is 8.50 L(.)mol(-1.)s(-1), and the rate constants of activation and deactivation in the atom transfer equilibrium for growing polymer radical are 0.045 L(.)mol(-1.)s(-1) and 1.2 x 10(5) L(.)mol(-1.)s(-1), respectively. The values of the rate constants represent the features of the ATRP process. The kinetic model was used to calculate the ATRP process of DMAEMA. The results show that the calculations agree well with the measurements.

关键词： kinetics modeling atom transfer radical polymerization moment method 2-(N,N-dimethylamino)-ethyl methacrylate

从专业生产到共同生产:城市社区公共服务供给的范式转型

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甘肃行政学院学报 2020年第6期 91-101,127,128页

作者：容志张云翔武汉大学政治与公共管理学院武汉430072 上海师范大学哲学与法政学院上海200234

社区公共服务生产一直是我国社区研究的重要内容。现有文献主要基于"政府-市场-社会"的专业生产范式来分析社区公共服务的生产与供给过程,往往忽略了居民这一核心主体的功能角色及其发挥作用的机制,在面临公共服务"最后一公里"难题时也... 详细信息

社区公共服务生产一直是我国社区研究的重要内容。现有文献主要基于"政府-市场-社会"的专业生产范式来分析社区公共服务的生产与供给过程,往往忽略了居民这一核心主体的功能角色及其发挥作用的机制,在面临公共服务"最后一公里"难题时也难以给出有效的方案。本研究试图以共同生产为核心过程,以居民为中心节点构建一个社区公共服务生产的新范式。这一范式认为,居民和居民组织是社区公共服务的核心生产者,他们可以积极动用物质、知识与技能等资源,生产出具有公共性的社区服务,并创造公共价值。社区公共服务生产作为一个持续性过程,不仅满足了居民个人和集体的需求,也为他们创造出新的需求,从而激发了他们后续的参与意愿。当然,政府、市场和社会等专业生产组织依然能够积极发挥资源赋能和激励助推的作用。本研究通过对上海市N社区微更新项目的案例研究,进一步阐释了基于共同生产的社区公共服务生产范式的具体特征和运作逻辑。

关键词：社区公共服务共同生产社区微更新范式转型

Leaf nutrient resorption of two life-form tree species in urban gardens and their response to soil nutrient availability

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Leaf nutrient resorption of two life-form tree species in ur...

我国社区服务共同生产的形成机制研究 ——以上海市R社区微更新为例

第十二届现代生态学讲座暨林草与环境学科研究生学术论坛

作者：郭晋平 Ruyuan Hu Tairui Liu yunxiang zhang Rongrong Zheng 山西农业大学林学院 College of Forestry Shanxi Agricultural University

Background. Leaf nutrient resorption is a key strategy in plant conservation that minimizes nutrient loss and enhances productivity. However,the differences of the nutrient resorption among garden tree species in urban ecosystems were not clearly understood,especially the differences of nitrogen resorption efficiency(NRE) and phosphorous resorption efficiency(PRE) between evergreen and deciduous ***. We selected 40 most generally used garden tree specie belonged two life forms(evergreen and deciduous) and investigated the nitrogen(N) and phosphorus(P) concentrations in green and senesced leaves and soil nutrient concentrations of nine samples trees for each ***,the nutrient concentrations and resorption efficiency were compared,and the soil nutrients utilization strategies were further ***. The results showed that the N concentration was significantly higher in the green and senesced leaves of deciduous trees than in the leaves of evergreen trees. The two life-form trees were both N limited and evergreen trees were more sensitive to N limitation. The NRE and PRE in the deciduous trees were significantly higher than those in the evergreen trees. The NRE was significantly positively correlated with the PRE in the deciduous trees. As the soil N and P concentrations increased,the nutrient resorption efficiency(NuRE) of the evergreen trees increased,but that of the deciduous trees decreased. Compared with the deciduous trees,the evergreen trees were more sensitive to the feedback of soil N and P concentrations. These findings reveal the N and P nutrient resorption mechanism of evergreen and deciduous trees and fill a gap in the understanding of nutrient resorption in urban ecosystems.

关键词：

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上海行政学院学报 2021年第3期22卷 93-100页

作者：张云翔容志上海师范大学行政管理系上海200233 武汉大学政治与公共管理学院武汉430072

社区服务共同生产在社区服务供给中具有重要意义,在激发公众社区参与之外,也有助于提升社区服务供给绩效与规模.通过上海市R社区微更新项目探索社区服务共同生产的形成机制,发现:个人性和结构性因素、催化性因素、激励性因素和反馈性因... 详细信息

社区服务共同生产在社区服务供给中具有重要意义,在激发公众社区参与之外,也有助于提升社区服务供给绩效与规模.通过上海市R社区微更新项目探索社区服务共同生产的形成机制,发现:个人性和结构性因素、催化性因素、激励性因素和反馈性因素共同构成社区服务共同生产的形成机制.社区居民在个人参与需求、责任感与关联感,以及社区社会资本和参与网络的驱动下,受到触媒作用和社会学习的催化,并得到基层政权的物质资源和政治资源赋能,从而形成共同生产的参与积极性.同时,社区为参与者提供的内外部激励因素,以及从阶段性参与反馈中得到的效能感,能够进一步使社区服务共同生产形成持续性的闭环.因此,社区服务中不仅需要拓展公众参与的效能和空间,也需要基层组织转变引领机制,进一步赋能和助推公众的共同生产行动,在满足公众对美好社区生活向往的同时,建构共建共治共享的社区治理格局.

关键词：社区服务共同生产社区治理社区微更新

信息类型和位置对儿童不同时期面孔加工的作用

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心理与行为研究 2020年第6期18卷 741-748页

作者：贺荟中张云翔华东师范大学教育学部特殊教育学系上海200062

采用多维面孔任务(face dimensions task)探讨了信息类型和位置对7~17岁儿童面孔加工的作用。该任务通过改变面孔的类型信息(特征和结构)和位置信息(眼部和嘴部),要求儿童对同时呈现的面孔图片进行"相同"或"不同"的判断。研究发现,儿童... 详细信息

采用多维面孔任务(face dimensions task)探讨了信息类型和位置对7~17岁儿童面孔加工的作用。该任务通过改变面孔的类型信息(特征和结构)和位置信息(眼部和嘴部),要求儿童对同时呈现的面孔图片进行"相同"或"不同"的判断。研究发现,儿童面孔加工水平随年龄提高,13~14岁表现最好;对面孔特征的加工好于结构加工,而眼部和嘴部的加工差异从11~12岁开始出现;类型信息和位置信息共同作用于面孔加工,表现为儿童在嘴部的特征和结构加工上未出现显著差异,但眼部的特征加工显著好于眼部的结构加工。

关键词：面孔加工儿童特征-结构加工位置信息类型信息

Cenozoic Sedimentary Sequence in the Kumkal Basin, Xinjiang and New Evidence for the Late Quaternary Uplift of the Qinghai-Tibetan Plateau

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Continental Dynamics 2001年第2期6卷 67-72页

作者： zhang yunxiang, CHE Zicheng and LIU Liang Department of Geo1ogy, Northwest University, Xi*an, 710069 Department of Geology Northwest University Xi 'an 710069

A continental sedimentary sequence of large thickness from Oligocene to Pleistocene is well developed in the Kumkal basin, Xinjiang, which recorded the process and scale of the uplift of the west part of the Qinghai-Tibetan Plateau. The main leveling plane was formed after Miocene but before Pliocene, a period featuring a change of biotic association from species like the ones in the present mountainous regions of South China to those suitable to salt-water environment. Geological data indicate that the scale of the uplift was fairly large and the horizontal movement was very strong in the western plateau. The features of mammal fossils in combination with the elevation of fossil beds and the characters of river erosion geomorphic features disclose that the uplift scale in this area is no more than 500 m since the late Pleistocene.

关键词： Cenozoic sedimentary sequence mammal fossils Qinghai-Tibet Plateau