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Chinese Science Bulletin 1990年第12期35卷 997-1002页

作者：韩秀文 h.rüegger J.SONDEregger Dalian Institute of Chemical Physics Academia Sinica Dalian 116012 PRC Spectrospin AG Zürich

A novel alkaloid compound with efficacious antihypertension activity was synthesized from one of heptatrienyl derivatives which was obtainod from curcumol by GUO Yong-tian et al. The structural determination of crystalline intermediate is very important for the structural elucidation of final reductive product and for designing and synthesizing

关键词： phase-sensitive COSY NOESY long-range C-h chemical shift correlation spectra BIrD pulses.

二维核磁共振谱研究3(r),8-二甲基-2(r),5-二(1-甲基-乙基)-6-酮-2,3,6,7,9,10-六氢-1h-3A,7-乙薁-10-腈的立体结构

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科学通报 1989年第20期34卷 1543-1546页

作者：韩秀文 h.rüegger J.Sonderegger 中国科学院大连化学物理研究所 Spectrospin AG Zürich

郭永沺等由莪术醇合成(艹卓)酮类化合物,进而合成出有明显降压作用的拟生物碱新化合物。其结晶性中间产物的结构确定对鉴定最终还原产物和合成、设计其它改性物十分重要。由元素分析和质谱数据确定了此未知物的分子式为C_(21)h_(28)NO;... 详细信息

郭永沺等由莪术醇合成(艹卓)酮类化合物,进而合成出有明显降压作用的拟生物碱新化合物。其结晶性中间产物的结构确定对鉴定最终还原产物和合成、设计其它改性物十分重要。由元素分析和质谱数据确定了此未知物的分子式为C_(21)h_(28)NO;红外谱表明了酮基、异丙基、

关键词：立体结构核磁共振

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改进的远程C-h化学位移相关谱脉冲序列

波谱学杂志 1990年第4期7卷 459-466页

作者：韩秀文 h.regger J.Sonderegger 中国科学院大连化学物理研究所 Spectrospin AG Zürich

本文在实验上比较了COLOC和近期发表的几个改进的远程C-h化学位移相关谱脉冲序列,综合各脉冲序列优点提出了一个改进的COLOCh序列。用一键(~1J_ch)相关峰压制率和远程相关峰成功率作为判断脉冲序列的依据。研究结果表明,Martin,COLOCS和... 详细信息

本文在实验上比较了COLOC和近期发表的几个改进的远程C-h化学位移相关谱脉冲序列,综合各脉冲序列优点提出了一个改进的COLOCh序列。用一键(~1J_ch)相关峰压制率和远程相关峰成功率作为判断脉冲序列的依据。研究结果表明,Martin,COLOCS和COLOCh是较成功的脉冲序列,而且实验参数设置对实验的成功十分重要。

关键词：异核化学位移相关谱脉冲序列

几个改进的远程C—h化学位移相关谱脉冲序列的比较

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几个改进的远程C—H化学位移相关谱脉冲序列的比较

^(31)p hOMONUCLEAr ChEMICAL ShIFT COrrELATION SPECTrOSCOPY IN SOLID STATE

第五届全国波谱学学术会议

作者：韩秀雯 h.rüegger J.Sonderegger 中国科学院大连化学物理研究所

＜正＞近年来,二维核磁共振技术和高观察频率的结合已成为解决天然产物、药物和生物大分子复杂结构问题的有力工具.其异核远程化学位移相关谱则被广泛地应用来建立那些相距二键或大于二键,甚至通过氧、

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Chinese Science Bulletin 1991年第5期36卷 382-386页

作者：韩秀文 h.regger J.SONDEregger Dalian Institute of Chemical Physics Academia Sinica Dalian 116023 PRC Spectrospin AG Zürich Switzerland

Ⅰ. INTrODUCTIONOrganometallic complexes containing phosph.rous ligands are used to catalyze various organic transformations. It is interesting that these homogeneous catalysts on polymer can facilitate the separation... 详细信息

关键词： cross-polarization (CP) magic angle spinning (MAS) spin lock COSY.

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固态31P同核化学位移相关谱

固态31P同核化学位移相关谱

Preparation of textile preform with sewing machines and bending properties of stitched woven glass fibre fabrics

第五届全国波谱学学术会议

作者：韩秀雯 h.rüegger J.Sonderegger 中国科学院大连化学物理究服所

随着固体核磁共振研究的发展,含磷配体有机金属络合催化剂的固态结构研究令人注目,分析、研究这些催化剂的固体结构的可行方法之一是应用P交叉极化和魔角旋转技术(P CPMAS)。为了

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中国有色金属学会会刊：英文版 2005年第2期15卷 221-224页

作者： ZhAO Nuo-ping h.rdel C.h.rzberg Institute of Textile and Clothing Technology Technische Universitt Dresden 01069 Dresden GermanyInstitute of Textile and Clothing Technology Technische Universitt Dresden 01069 Dresden GermanyInstitute of Textile and Clothing Technology Technische Universitt Dresden 01069 Dresden Germany

With the increasing demand of light structure composite in industry, carbon and glass fibres are more and more used, because of their light mass, high strength, high temperature endurance and erosion resistance. This paper focuses on the process of forming a preform. Up to the finished preform, the multilayer reinforced fabrics are subjected to the following procedures: pattern design, cutting and sewing. Considering the fabric properties, the 3-dimensional CAD software and sewing machines, which are generally used in the clothing industry, are also suitable for the processing of the reinforced fabrics. This study aims also to the changes of property arising from the sewing process. Bending stiffness and changes of thickness after sewing are studied. These properties will provide input data for CAD pattern design.

关键词：三维加固织物粗加工弯曲硬度 CAD 光结构复合材料玻璃纤维

Scalable Ir‑Doped NiFe_(2)O_(4)/TiO_(2)heterojunction Anode for Decentralized Saline Wastewater Treatment and h_(2)Production

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Nano-Micro Letters 2025年第3期17卷 1-18页

作者： Sukhwa hong Jiseon Kim Jaebeom Park Sunmi Im Michael r.hoffmann Kangwoo Cho Division of Environmental Science and Engineering Pohang University of Science and Technology(POSTECH)Pohang 790−784Korea Linde Laboratory California Institute of TechnologyPasadenaCA 91125USA Institute for Convergence research and Education in Advanced Technology(I‑CrEATE) Yonsei University International CampusIncheon 21983Republic of Korea

Wastewater electrolysis cells(WECs)for decentralized wastewater treatment/reuse coupled with h_(2)production can reduce the carbon footprint associated with transportation of water,waste,and energy *** study reports Ir-doped NiFe_(2)O_(4)(NFI,~5 at%Ir)spinel layer with TiO_(2)overlayer(NFI/TiO_(2)),as a scalable heterojunction anode for direct electrolysis of wastewater with circumneutral ph in a single-compartment *** dilute(0.1 M)NaCl solutions,the NFI/TiO_(2)marks superior activity and selectivity for chlorine evolution reaction,outperforming the benchmark IrO_(2).robust operation in near-neutral ph was *** including operando X-ray absorption spectroscopy unveiled crucial roles of TiO_(2) which serves both as the primary site for Cl−chemisorption and a protective layer for NFI as an ohmic *** electrolysis of Nh4+-laden synthetic wastewater demonstrated that NFI/TiO_(2)not only achieves quasi-stoichiometric Nh_(4)^(+)-to-N_(2)conversion,but also enhances h_(2)generation efficiency with minimal competing reactions such as reduction of dissolved oxygen and reactive *** scaled-up WEC with NFI/TiO_(2)was demonstrated for electrolysis of toilet wastewater.

关键词： Wastewater electrolysis cell Ir-doped NiFe_(2)O_(4) reactive chlorine species Decentralized h_(2)production On-site wastewater treatment

Free vibration and transient response of double curved beams connected by intermediate straight beams

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 37-62页

作者： r.A.JAFArI-TALOOKOLAEI h.GhANDVAr E.JUMAEV S.KhATIr T.CUONG-LE School of Mechanical Engineering Babol Noshirvani University of Technology Department of Mechanical Engineering Faculty of Engineering New Uzbekistan University University of Business and Science Center for Engineering Application and Technology Solutions Ho Chi Minh City Open University

This paper investigates the free vibration and transient response of interconnected structures including double curved beams and intermediate straight beams,which are all constructed from functionally graded porous(FGP) materials. The strain potential and kinetic energies of each beam along with the work done by the external force are calculated. Additionally, a high.r-order beam element is introduced to derive stiffness and mass matrices, along with the force vector. The curved and straight beams are discretized, and their assembled stiffness, mass matrices, and force vectors, are *** conditions at the joints are used to derive the total matrices of the entire structure. Subsequently, the natural frequencies and transient response of the system are determined. The accuracy of the mathematical model and the self-developed computer program is validated through the comparison of the obtained results with those of the existing literature and commercial software ANSYS, demonstrating excellent ***, a comprehensive study is conducted to investigate the effects of various parameters on the free vibration and transient response of the considered structure.

关键词： Kinetic energy

Neuroinflammation as a th.rapeutic target in huntington's disease

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Neural regeneration research 2025年第3期20卷 817-818页

作者： Andrea Kwakowsky Thulani h.Palpagama Center for Brain research and Department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Ph.rmacology and Th.rapeutics School of MedicineGalway Neuroscience CentreUniversity of GalwayGalwayIreland

In 1872, George huntington presented his essay “On Ch.rea” to the Meigs and Mason Academy of Medicine and, in doing so, detailed a disease that would later bear his name. huntington's disease(hD) is a genetic, neurodegenerative disease that manifests as the loss of motor control,cognitive impairment,and mood and psychiatric changes in paents.

关键词： huntington inflammation Medicine