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检索条件"主题词=Helix"
163 条 记 录,以下是1-10 订阅
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Theoretical research on the performance of a practical helix travelling wave tube
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Chinese Physics B 2008年 第7期17卷 2484-2490页
作者: 段兆云 宫玉彬 魏彦玉 王文祥 Vacuum Electronics National Laboratory College of Physical ElectronicsUniversity of Electronic Science and Technology of China
On the basis of a rigorous field theory, two different physical models of attenuator and sever have been proposed. One is named High attenuation (HATT) model in which both attenuator and sever are considered as a un... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Rock-salt and helix structures of silver iodides under ambient conditions
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National Science Review 2019年 第4期6卷 767-774页
作者: Hongyang Huang Jinying Zhang Yifan Zhang Chengcheng Fu Jialiang Huang Yonghong Cheng Chunming Niu Xinluo Zhao Hisanori Shinohara State Key Laboratory of Electrical Insulation and Power Equipment Center of Nanomaterials for Renewable Energy (CNRE) School of Electrical EngineeringXi'an Jiaotong University Department of Physics Shanghai University Department of Chemistry and Institute for Advanced Research Nagoya University
Many different phase structures have been discovered for silver iodides. The β and γ phases were found to be the most common ones at ambient conditions, while the rock-salt phase was found to be stable under pressur... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Supramolecular Polymerization Driven by the Dimerization of Single-stranded helix to Double-stranded helix
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Chinese Journal of Polymer Science 2018年 第3期36卷 261-261,262-265页
作者: Chao Zeng Chen-Yang Zhang Jun-Yan Zhu Ze-Yuan Dong State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China
We reported a type of strong and highly directional non-covalent interactions based on the dimerization of single-stranded helix to double-stranded helix that can achieve supramolecular polymerization, giving rise to ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Halogen bonding-driven formation of supramolecular macrocycles and double helix
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Chinese Chemical Letters 2019年 第5期30卷 953-956页
作者: Chuan-Zhi Liu Satish Koppireddi Hui Wang Dan-Wei Zhang Zhan-Ting Li Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University
The crystal structures of three intramolecularly hydrogen bonded rigid aromatic amide derivatives,which all bear one iodine atom at one end as the donor and one pyridine unit at the other end as the acceptor,have been... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
The basic helix-loop-helix transcription factor TabHLH1 increases chlorogenic acid and luteolin biosynthesis in Taraxacum antungense Kitag
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Horticulture Research 2021年 第1期8卷 2756-2769页
作者: Qun Liu Li Li Haitao Cheng Lixiang Yao Jie Wu Hui Huang Wei Ning Guoyin Kai Laboratory for Core Technology of TCM Quality Improvement and Transformation College of PharmacySchool of Pharmaceutical SciencesThe Third Affiliated HospitalZhejiang Chinese Medical UniversityHangzhouZhejiang 310053PR China College of Horticulture Shenyang Agricultural UniversityShenyang 110866China Institute of Botany Jiangsu Province and Chinese Academy of Sciences(Nanjing Botanical Garden Mem.Sun Yat-Sen)Nanjing 210014China College of Traditional Chinese Materia Medica Shenyang Pharmaceutical UniversityShenyang 110016PR China Guangxi Botanical Garden of Medicinal Plants Nanning 530023PR China College of Life Sciences and Engineering Shenyang UniversityShenyang 110044PR China
Polyphenols are the main active components of the anti-inflammatory compounds in dandelion,and chlorogenic acid(CGA)is one of the primary ***,the molecular mechanism underlying the transcriptional regulation of CGA bi... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Two New Coordination Polymers Containing Metal-carboxylate helix
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Chinese Journal of Structural Chemistry 2014年 第5期33卷 764-770页
作者: 李桂连 刘广臻 辛凌云 李晓玲 College of Chemistry and Chemical Engineering Luoyang Normal University
Two novel compounds, {[Cd(nbdc)(bpp)(H2O)]·H2O}n 1 and {[Cd(nbdc)(dpds)-(H2O)]·H2O}n 2(H2nbdc = 4-nitro-1,2-benzenedicarboxylic acid, bpp = 1,3-bis(4-pyridyl)propane and dpds = 4,4ˊ-dipyridyldisulfid... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Quasiparticle approach to diffusional atomic scale self-assembly of complex structures: from disorder to complex crystals and double-helix polymers
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npj Computational Materials 2016年 第1期2卷 256-264页
作者: Mykola Lavrskyi Helena Zapolsky Armen G Khachaturyan GPM UMR 6634University of RouenSaint-Etienne du RouvrayFrance Department of Materials Science&Engineering Rutgers UniversityPiscatawayNJUSA Department of Materials Science&Engineering University of CaliforniaBerkeleyBerkeleyCAUSA
A self-organisation is an universal phenomenon in nature and,in particular,is highly important in materials *** goal was to develop a new theory that provides a computationally effective approach to this *** this pape... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Regulation of B-1a cells: another novel function of the basic helix-loop-helix transcriptional regulator BHLHE41
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Cellular & Molecular Immunology 2017年 第10期14卷 802-804页
作者: Buka Samten The Department of Pulmonary Immunology the University of Texas Health Science CenterTylerTX 75708USA
The basic helix-loop-helix transcription factors e40(BHLHE40)and e41(BHLHE41)were originally discovered as regulators of the proliferation and differentiation of chondrocytes and nerve cells.1–3 Later studies showed ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
helix Induction to Polysilane Chain Upon Wrapping by Sugar Derivatives and Related Chemistry
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复旦学报(自然科学版) 2007年 第5期46卷 618-619页
作者: M.Tanaka T.Sanji Nobu Kato Y.Sato Chemical Resources Laboratory Tokyo Institute of Technology 4259-R1-13 NagatsutaMidori-ku Yokohama 226-8503Japan
1 Results helix induction to polymer chains is an active area of research these days. In most cases,optically-active units are attached to the polymers to induce helical conformation. Scheme 1Since the properties of ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Possibility of “Comet-Like” Transport of Acetylcholine Receptors in Command <i>helix</i>Neurons in Cellular Analog of Habituation
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World Journal of Neuroscience 2014年 第2期4卷 133-143页
作者: Arkady S. Pivovarov Galina B. Murzina Denis A. Makhnovsky Mariya S. Tret’yakova Department of Higher Nervous Activity Faculty of Biology Moscow Lomonosov State University Moscow Russia Institute of Higher Nervous Activity and Neurophysiology Russian Academy of Sciences Moscow Russia
The presence of "comet-like" radial transport of acetylcholine receptors by actin microfilaments without the participation of myosin motors in the depression of acetylcholine-induced inward chloric current (ACh-curren... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论