检索结果-南通市图书馆

Hydrogen Sulfide Regulates Ethylene-induced Stomatal Closure in Arabidopsis thaliana

Journal of Integrative Plant Biology 2013年第3期55卷 277-289页

作者： Zhihui hou Lanxiang Wang Jing Liu Lixia hou xin Liu College of Life Sciences Qingdao Agricultural UniversityUniversity Key Laboratory of Plant Biotechnology in Shandong Province

Hydrogen sulfide （H2S） is a newly-discovered signaling molecule in plants and has caused increasing attention in recent years, but its function in stomatal movement is unclear. In plants, H2S is synthesized via cysteine degradation catalyzed by D-/L-cysteine desulfhydrase （D-/L-CDes）. AtD-/L-CDes：：GUS transgenic Arabidopsis thaliana （L.） Heynh. plants were generated and used to investigate gene expression patterns, and results showed that AtD-/L-CDes can be expressed in guard cells. We also determined the subcellular localization of AtD-/L-CDes using transgenic plants of AtD-/L-CDes：：GFP, and the results showed that AtD-CDes and AtL-CDes are located in the chloroplast and in the cytoplasm, respectively. The transcript levels of AtD-CDes and AtL-CDes were affected by the chemicals that cause stomatal closure. Among these factors, ACC, a precursor of ethylene, has the most significant effect, which indicates that the H2S generated from D-/L-CDes may play an important role in ethylene-induced stomatal closure. Meanwhile, H2S synthetic inhibitors significantly inhibited ethylene-induced stomatal closure in Arabidopsis. Ethylene treatment caused an increase of H2S production and of AtD-/L-CDes activity in Arabidopsis leaves. AtD-/L-CDes over-expressing plants exhibited enhanced induction of stomatal closure compared to the wild-type after ethylene treatment; however, the effect was not observed in the Atd-cdes and Atl-cdes mutants. In conclusion, our results suggest that the D-/L-CDes-generated H2S is involved in the regulation of ethylene-induced stomatal closure in Arabidopsis thaliana.

关键词： Desulfhydrase D-/L-cysteine ethylene hydrogen sulfide stomatal closure.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ordered Reproducing Hilbert Spaces over C^2

引用

Acta Mathematica Sinica,English Series 2008年第3期24卷 503-510页

作者： Sheng zhao hou Jie WANG Department of Mathematics Suzhou University Suzhou 215006 P R China Department of Mathematics Shanxi Normal University Linfen 041004 P. R. China

In this paper, we study the relation between the ordered reproducing Hilbert space and its reproducing kernel. A complete description of a similar and unitary equivalence of two quasi-invariant subspaces generated by ... 详细信息

关键词： ordered reproducing Hilbert spaces quasi-invariant subspaces

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The effect of selected alloying element additions on properties of Mg-based alloy as bioimplants： A literature review

引用

Frontiers of Materials Science 2013年第3期7卷 227-236页

作者： Li-Nan ZHANG Zeng-Tao hou xin YE zhao-Bin XU Xue-Ling BAI Peng SHANG Center for Translational Medicine Research and Development Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China

This review investigates the current application limitations of Mg and Mg alloys. The key issues hindering the application of biodegradable Mg alloys as implants are their fast degradation rate and biological consideration. We have discussed the effect of some selected alloying element additions on the properties of the Mg-based alloy, especially the nutrient elements in human （Zn, Mn, Ca, St）. Different grain sizes, phase constituents and distributions consequently influence the mechanical properties of the Mg alloys. Solution strengthening and precipitation strengthening are enhanced by the addition of alloying elements, generally improving the mechanical properties. Besides, the hot working process can also improve the mechanical properties. Combination of different processing steps is suggested to be adopted in the fabrication of Mg-based alloys. Corrosion properties of these *** alloys have been measured in vitro and in vivo. The degradation mechanism is also discussed in terms of corrosion types, rates, by- products and response of the surrounding tissues. Moreover, the clinical response and requirements of degradable implants are presented, especially for the nutrient elements （Ca, Mn, Zn, Sr）. This review provides information related to different Mg alloying elements and presents the promising candidates for an ideal implant.

关键词： magnesium alloy alloying element corrosion biodegradation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Maximal Subgroups in the Classical Groups Normalizing Solvable Subgroups

引用

Algebra Colloquium 2021年第2期28卷 181-194页

作者： xin hou Shangzhi Li Yucheng Yang Jiping Zhang Capital Normal University Beijing 100048China School of Mathematics and Systems Science Beihang University Beijing 100191China 不详

Let G be a classical group over an arbitrary field F,acting on an n-dimensional F-space V=V(n,F).All those maximal subgroups of G are classified each of which normalizes a solvable subgroup N of GL(V/F)not lying in F^... 详细信息

关键词： classical group over arbitrary field maximal subgroup solvable subgroup

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Core-shell structure nanoprecipitates in Fe-xCu-3.0Mn-1.5Ni-1.5Al alloys: A phase field study

引用

Progress in Natural Science:Materials International 2022年第3期32卷 358-368页

作者： Yuhong zhao Yuanyang Sun Hua hou School of Materials Science and Engineering North University of China Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and Technology University of Science and Technology Beijing College of Materials Science and Engineering Taiyuan University of Science and Technology

The core-shell structure precipitatates of Fe-xCu-3.0Mn-1.5Ni-1.5Al alloys under internal and external strain was investigated by using a multicomponent continuous phase field model based on Gibbs free energy of sub regular solution. Results show that the early cluster nuclei are not pure Cu, and Mn/Ni/Al also gather in the same position of Cu rich nuclei, resulting in four core-shell structures in precipitation. In the absence of external strain, the morphology of precipitates is mainly determined by interfacial energy, intrinsic elastic anisotropy and lattice distortion between new phase and parent phase. Intrinsic elastic strain energy can inhibit precipitation, while has no obvious effect on particle morphology. In coarsening, the elastic energy decreases due to the combination of particles. The loading direction and magnitude of the applied elastic strain field can control the morphology of precipitates. The external strain and the interaction between Mn, Ni and Al promote the joining and merging of adjacent core-shell particles. This work has guiding significance for the design of Fe-x Cu-3.0Mn-1.5Ni-1.5Al alloys and other core-shell precipitates materials.

关键词： Phase-field Fe–Cu–Mn–Ni–Al Core-shell structure Elastic strain

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Development of In Situ MAS NMR and Its Applications in Material Synthesis and Heterogeneous Catalysis

引用

Chinese Journal of Structural Chemistry 2022年第10期41卷 45-55页

作者： xinlong Yao Zhenchao zhao Guangjin hou State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Bejing 100049China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical ChemistryZhejiang Normal UniversityJinhua 321004China

High-resolution magic angle spinning(MAS)NMR can afford both qualitative and quantitative information of the solid,liquid and gas phase at atomic level,and such information obtained at in situ/operando conditions is of vital importance for understanding the crystallization process of material as well as the reaction mechanism of *** meet the requirement of experimental conditions for material synthesis and catalytic reactions,in situ MAS NMR techniques have been continuously developed for using at higher temperatures and pressures with high ***,we will briefly outline the development of this technology and discuss its detailed applications in understanding material synthesis and heterogeneous catalysis.

关键词： in situ NMR high-temperature high-pressure material synthesis heterogeneous catalysis molecular sieves

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Various phenotypes of autosomal dominant cone-rod dystrophy with cone-rod homeobox mutation in two Chinese families

引用

International Journal of Ophthalmology(English edition) 2022年第12期15卷 1915-1923页

作者： Hui Cui xin Jin Qing-Hua Yang Ling-Hui Qu Bao-Ke hou zhao-Hui Li hou-Bin Huang Senior Department of Ophthalmology the Third Medical Center of PLA General HospitalBeijing 100853China Department of Ophthalmology the 74th Army Group HospitalGuangzhou 510318Guangdong ProvinceChina Department of Ophthalmology Hainan Hospital of Chinese PLA General HospitalSanya 572000Hainan ProvinceChina

AIM:To present the clinical manifestations of 5 autosomal dominant cone-rod dystrophy(ad CORD)patients from two Chinese families with cone-rod homeobox(CRX)mutation(p.R41W),and to explore the clinical heterogeneity of ad CORD with CRX mutation(p.R41W).METHODS:Interrogation and ophthalmological examinations were undertaken in all patients and unaffected *** of clinical features was performed by visual acuity,slit lamp examination,visual field examination,fundoscopy,autofluorescence and spectral domain optical coherence *** next-generation sequencing was applied as a useful tool to identify the causative mutation of CORD ***:A CRX missense mutation c.121C>T was identified in all patients,resulting in an amino acid change from arginine acid to tryptophan(p.R41W).The patients presented with early onset,progressive and different severities with ***:This is the first report of the clinical phenotype of CRX mutation(p.R41W)in Chinese families,and the mutation can lead to a wide range of various retinal phenotypes.

关键词： cone-rod homeobox cone-rod dystrophy mutation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A facile,scalable,high stability Lithium metal anode

引用

SusMat 2022年第1期2卷 104-112页

作者： Qiang zhao xin Chen Wang hou Beirong Ye Yongqi Zhang xinhui Xia Jinshu Wang School of Materials and Energy University of Electronic Science and Technology of ChinaChengduP.R.China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhouP.R.China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengduSichuanP.R.China State Key Lab of Silicon Materials Zhejiang UniversityHangzhouP.R.China

Li has garnered enormous attention for next-generation Limetal batteries owing to its remarkable theoretical ***,as an anode,Li suffers from serious safety issues and fast capacity fading due to the formation of Li dendrites,which hinders the practical application of Li ***,a LiAlO_(2)-PVDF composite modification layer is fabricated on the surface of Li metal to enhance its stability and electrochemical *** fromthe synergetic effects of high Li+conductivity,high Li+transference number,excellent mechanical properties,superior chemical durability,and compactness of the modification layer,the LiAlO_(2)-PVDF@Li electrode delivers an ultra-long lifespan and a high capacity retention rate in the LiAlO2-PVDF@Li│LiFePO_(4) full *** proposed strategy provides a new alternative anode for Li metal batteries with high performance and scalable production.

关键词： Artificial modification layer Li metal anode LiAlO2-PVDF Spin-coating

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Using a priority queuing approach to improve emergency department performance

引用

Journal of Management Analytics 2020年第1期7卷 28-43页

作者： Jianrong hou Xiaofeng zhao Antai College of Economics&Management Shanghai Jiaotong UniversityShanghaiPeople’s Republic of China College of Business University of Mary WashingtonFredericksburgVAUSA

Emergency department over-crowding has been a growing problem throughout the *** paper presents a practical approach to estimate the waiting times for multi-class patients and apply the approach to reduce the waiting time for high priority *** flows with different levels of acuity are formulated based on the priority queue *** derives explicit expressions of the wait time for the Markov queue and uses the concept of isomorphism to approximate the wait time in the general *** results with simulation experiments are reported to display the accuracy of the approach.A case study from an emergency department indicates that the proposed approach can efficiently prioritize patient flows in decreasing waiting *** queuing models have two ***,the approximation applies to the general priority queues and reduces to the exact results of the Markov priority ***,the models requires no iterative algorithm.

关键词： queuing priority queue stochastic processes emergency department health care operations

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Eco-friendly co-catalyst-free cycloaddition of CO_(2)and aziridines activated by a porous MOF catalyst

引用

Science China Chemistry 2021年第8期64卷 1316-1322页

作者： Ying Shi Jian zhao Hang Xu Sheng-Li hou Bin zhao Department of Chemistry Key Laboratory of Advanced Energy Material ChemistryNankai UniversityTianjin300071China

Cycloaddition of CO_(2) with aziridines is an important reaction to obtain high-value *** MOFs can catalyze this reaction,but co-catalysts are still necessary to improve the catalytic *** a reaction catalyzed by MOFs-based materials without co-catalyst has not been reported ***,a porous and stable three-dimensional(3D)framework{[Ni(DCTP)]·6.5DMF}_(n)(1)with a large Langmuir surface area of 3,789 m^(2)/g was synthesized,which displayed high I2 adsorption ability up to 731.0 mg/g and could release it ***,it exhibited a high CO_(2) adsorption capacity of 104.0 cm^(3)/g at 273 *** investigation results revealed 1 could effectively catalyze the cycloaddition of CO_(2) and aziridines in the absence of additional co-catalyst,and it could maintain the catalytic activity after five ***,1 also exhibited high catalytic activity for the gram-scale ***,it is the first MOF material as a heterogeneous catalyst for the conversion of CO_(2) and aziridines without co-catalyst.

关键词： MOFs heterogeneous catalyst co-catalyst-free CO_(2)capture CO_(2)fixation aziridines

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：