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Two Faces of One Seed： Hormonal Regulation of Dormancy and Germination

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Molecular Plant 2016年第1期9卷 34-45页

作者： Kai Shu Xiao-dong Liu Qi xie Zu-hua He State Key Laboratory of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China National Key Laboratory of Plant Molecular Genetics Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 China Key Laboratory of Crop Ecophysiology and Farming System in Southwest China Institute of Ecological Agriculture Sichuan Agricultural UniversityChengdu 611130 China College of Agronomy Xinjiang Agricultural University Urumqi 830052 Xinjiang China These authors contributed equally to this article

Seed plants have evolved to maintain the dormancy of freshly matured seeds until the appropriate time for germination. Seed dormancy and germination are distinct physiological processes, and the transition from dormancy to germination is not only a critical developmental step in the life cycle of plants but is also impor- tant for agricultural production. These processes are precisely regulated by diverse endogenous hormones and environmental cues. Although ABA （abscisic acid） and GAs （gibberellins） are known to be the primary phytohormones that antagonistically regulate seed dormancy, recent findings demonstrate that another phytohormone, auxin, is also critical for inducing and maintaining seed dormancy, and therefore might act as a key protector of seed dormancy. In this review, we summarize our current understanding of the sophisticated molecular networks involving the critical roles of phytohormones in regulating seed dormancy and germination, in which AP2-domain-containing transcription factors play key roles. We also discuss the interactions （crosstalk） of diverse hormonal signals in seed dormancy and germination, focusing on the ABA/GA balance that constitutes the central node.

关键词： seed dormancy germination ABA GA auxin crosstalk

Spatial Process of Green Infrastructure Changes Associated with Rapid Urbanization in Shenzhen,China

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Chinese Geographical Science 2013年第1期23卷 113-128页

作者： CHANG Qing LI Shuangcheng WANG Yanglin WU Jiansheng xie Miaomiao Department of Ornamental Horticulture and landscape Architecture China Agricultural University College of Urban and Environmental Sciences Peking University Key Laboratory for Environmental and Urban Sciences Shenzhen Graduate SchoolPeking University School of land Science and Technology China University of Geosciences

Through a case study of Shenzhen City,China,this study focused on a quantitative method for analyzing the spatial processes involved in green infrastructure changes associated with rapid *** on RS,GIS and SPSS statistics software,the approach includes selection of the square analysis units and representative landscape metrics,quantification of the change types of landscape metrics in all analysis units through two indices and hierarchical cluster analysis of the above analysis units with different landscape metric change types(*** attributes).The analyses verify that there is a significant sequence of continuous changes in green infrastructure in *** are the perforation,the segmentation,the fragmentation,the evanescence and the filling-in processes,which have a good spatio-temporal correspondence with urbanization and reflect the synthetic influence of urban planning,government policies and *** with other studies on quantifying the spatial pattern,this study provides an alternative probe into linking the spatial pattern to spatial processes and the corresponding ecological processes in the *** spatio-temporal processes offer many opportunities for identifying,protecting and restoring key elements in an urban green infrastructure network for areas in the early stages of urbanization or for non-urbanized areas.

关键词： spatial process landscape metrics dynamic change green infrastructure urbanization

Electron-Positron Pair Creation from Vacuum by using Negative Frequency Chirping Laser Pulses

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Chinese Physics Letters 2013年第11期30卷 61-64页

作者： SANG Hai-Bo JIANG Min xie Bai-Song Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education and College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875

The influences of laser pulses with negative frequency chirp and different pulse cycles on pair production are *** solving the quantum Vlasov equation,the momentum distribution and the number density of the created pairs are obtained *** is found that the chirp rate can enhance the pair production rate in both supercycle and subcycle ***,there is an optimal cycle parameter corresponding to the maximum number density under the same chirp *** pair number density is sensitive to the cycle parameter when it is less than the optimal *** to the positive frequency chirp,in the case of the negative frequency chirp,the optimal cycle parameter is increased.

关键词： chirp optimal cycle

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血液净化医院感染预防与控制的细节管理

中华医院感染学杂志 2011年第19期21卷 4104-4105页

作者：谢金兰扬州大学临床医学院医院感染管理科江苏扬州225001

目的探讨血液透析医院感染管理的细节问题,有效预防控制医院感染的发生。方法对照检查标准,实地查看省内二、三级及民营医院共43所。结果在风险意识、建筑布局及人员配备、正确处理成本控制与医疗安全的关系、无菌技术、消毒隔离、水处... 详细信息

目的探讨血液透析医院感染管理的细节问题,有效预防控制医院感染的发生。方法对照检查标准,实地查看省内二、三级及民营医院共43所。结果在风险意识、建筑布局及人员配备、正确处理成本控制与医疗安全的关系、无菌技术、消毒隔离、水处理维护、监测等细节管理方面存在不足。结论医护人员较高的风险意识、良好的慎独精神,注重细节管理,质量持续改进等是预防血液净化医院感染发生的关键。

关键词：血液净化医院感染预防控制细节管理

From sand to fast and stable silicon anode:Synthesis of hollow Si@void@C yolk-shell microspheres by aluminothermic reduction for lithium storage

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Chinese Chemical Letters 2019年第3期30卷 610-617页

作者： Zhengwei Zhou Long Pan Yitao Liu Xiaodong Zhu Xuming xie Key Laboratory of Advanced Materials (MOE) Department of Chemical Engineering Tsinghua University Innovation Center for Textile Science and Technology Donghua University Academy of Fundamental and Interdisciplinary Sciences Harbin Institute of Technology

As an alloying type anode material, silicon is a promising alternative of graphitic carbon due to its high theoretical capacity and natural abundance. Developing an industrially viable silicon anode, however, is still a huge challenge because of several problems: First of all, the common process to synthesize a silicon anode is complicated, costly, and energy-intensive. Besides, the huge volume expansion, inevitable side reactions with the electrolyte, and low intrinsic conductivity of silicon are eventually responsible for the poor cyclability and unsatisfactory rate capability. Herein, we aim to address these issues by proposing synthesis of hollow Si@void@C yolk-shell microspheres from sand by low-temperature aluminothermic reduction, which energetically combines a cost-effective silicon source with an energy-efficient, highyield methodology. The hollow Si@void@C yolk-shell microspheres effectively accommodate the diffusion-induced stress by providing the hollow interior and the void space. Moreover, the carbon shell not only functions as an electrolyte-blocking layer to protect the silicon yolk from undesirable side reactions and SEI formation, but also acts as a conductive framework to reduce the resistance to electron and Li^+ ion transport. Benefiting from these synergistic effects, the hollow Si@void@C yolk-shell microspheres exhibit superior long-term cyclability and rate capability.

关键词： Sand Anode Lithium storage Aluminothermic reduction Si@void@C yolk-shell microspheres

射血分数减低型心力衰竭的GDMT应用现状与改善策略

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中华心血管病杂志 2023年第9期51卷 1001-1005页

作者：谢颖佘飞张萍清华大学附属北京清华长庚医院心血管内科北京102218

心力衰竭是多种心血管疾病进展至严重阶段的一组临床综合征,已经成为影响我国居民健康的重要公共卫生问题。循证医学证据显示,指南指导的优化治疗(GDMT)可显著改善射血分数减低型心力衰竭患者的预后,但真实世界数据显示其使用率仍差强人... 详细信息

心力衰竭是多种心血管疾病进展至严重阶段的一组临床综合征,已经成为影响我国居民健康的重要公共卫生问题。循证医学证据显示,指南指导的优化治疗(GDMT)可显著改善射血分数减低型心力衰竭患者的预后,但真实世界数据显示其使用率仍差强人意,存在极大改善空间。GDMT的质量改善项目可从医疗机构、医疗人员或患者等多个层面进行干预,从而改善临床实践及患者的预后。

关键词：心力衰竭质量改善

Fabrication and characteristic detection of graphene nanoelectrodes

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Science China(Technological Sciences) 2014年第10期57卷 1950-1955页

作者： xie ShuangXi LIU ZengLei JIAO NianDong TUNG Steve LIU LianQing State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Mechanical Engineering University of Arkansas

Graphene has the advantages of high electrical conductivity,high heat conductivity,and low noise,which makes it a potential option for integrated circuits interconnection and *** this paper,we present a novel fabrication method for graphene nanoeletrodes with ***,graphene grown by chemical vapor deposition(CVD)is assembled to a chip with ***,an atomic force microscopy(AFM)based mechanical cutting method is developed to cut the graphene into nanoribbons and nanoeletrodes with *** the electronic property of a single nanodot is characterized using the garphene nanoelectrodes,demonstrating the effectiveness of the graphene *** fabricated graphene nanoeletrode pairs can be used as probes to detect single molecule in micro-environment,and show an attractive prospect for future molecular electronics applications.

关键词： atomic force microscopy graphene nanoelectrodes nanogap molecular electronics

Relationships of nitrous oxide fluxes with water quality parameters in free water surface constructed wetlands

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Frontiers of Environmental Science & Engineering 2009年第2期3卷 241-247页

作者： Juan WU Jian ZHANG Wenlin JIA Huijun xie Bo ZHANG School of Environmental Science&Engineering Shandong UniversityJinan 250100China College of Resources&Environment Qingdao Agricultural UniversityQingdao 266109China Environment Research Institute Shandong UniversityJinan 250100China

The effects of chemical oxygen demand(COD)concentration in the influent on nitrous oxide(N_(2)O)emissions,together with the relationships between N_(2)O and water quality parameters in free water surface constructed wetlands,were investigated with laboratoryscale systems.N_(2)O emission and purification performance of wastewater were very strongly dependent on COD concentration in the influent,and the total N_(2)O emission in the system with middle COD influent concentration was the *** relationships between N_(2)O and the chemical and physical water quality variables were studied by using principal component scores in multiple linear regression analysis to predict N_(2)O *** multiple linear regression model against principal components indicated that different water parameters affected N_(2)O flux with different COD concentrations in the influent,but nitrate nitrogen affected N_(2)O flux in all systems.

关键词： free water surface constructed wetland nitrous oxide emission water quality parameter principal component analysis multiple linear regression

Demystifying the manipulation of host immunity, metabolism, and extraintestinal tumors by the gut microbiome

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Signal Transduction and Targeted Therapy 2019年第1期4卷 264-297页

作者： Ziying Zhang Haosheng Tang Peng Chen Hui xie Yongguang Tao Key Laboratory of Carcinogenesis and Cancer Invasion Ministry of EducationDepartment of PathologyXiangya HospitalCentral South University410078 HunanChina NHC Key Laboratory of Carcinogenesis(Central South University) Cancer Research Institute and School of Basic MedicineCentral South University410078 ChangshaHunanChina Hunan Key Laboratory of Tumor Models and Individualized Medicine Department of Thoracic SurgerySecond Xiangya HospitalCentral South University410011 ChangshaChina Department of Oncology Third Xiangya HospitalCentral South University410013 ChangshaChina Department of Urology Xiangya HospitalCentral South University410008 ChangshaChina Department of Thoracic and Cardiovascular Surgery Second Xiangya Hospital of Central South University410011 ChangshaChina

The trillions of microorganisms in the gut microbiome have attracted much attention recently owing to their sophisticated and widespread impacts on numerous aspects of host *** progress in large-scale sequencing and mass spectrometry has increased our understanding of the influence of the microbiome and/or its metabolites on the onset and progression of extraintestinal cancers and the efficacy of cancer *** the plasticity in microbial composition and function,microbial-based therapeutic interventions,including dietary modulation,prebiotics,and probiotics,as well as fecal microbial transplantation,potentially permit the development of novel strategies for cancer therapy to improve clinical ***,we summarize the latest evidence on the involvement of the gut microbiome in host immunity and metabolism,the effects of the microbiome on extraintestinal cancers and the immune response,and strategies to modulate the gut microbiome,and we discuss ongoing studies and future areas of research that deserve focused research efforts.

关键词： metabolism immunity manipulation