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Science China(Physics,Mechanics & Astronomy) 2010年第6期53卷 1144-1152页

作者： RUAN GuiPing 1,2.& SHI WeiBin 1,2.1 Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment,School of Space Science and Physics,Shandong University at weihai,weihai 2.42.9,China 2.Key Laboratory of Optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012.China 1. Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment School of Space Science and Physics Shandong University at Weihai Weihai 264209 China2. Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China

We discovered ten large HII regions in the Sino-German λ6 cm polarization survey of the Galactic plane. They have been identified according to their flat spectral indexes and the high ratio between the 60 μm infrared emission and the λ6 cm emission. The integrated flux densities as well as the sizes of these sources are given at 4800 MHz. Cross-identifications are made with other major radio catalogs.

关键词： radio continuum general-methods observational-HII regions

How the Antimicrobial Peptides Kill Bacteria:Computational Physics Insights

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Communications in Computational Physics 2012年第3期11卷 709-725页

作者： Licui Chen Lianghui Gao weihai Fang Leonardo Golubovic College of Chemistry Beijing Normal UniversityBeijing 100875China Physics Department West Virginia UniversityMorgantownWest Virginia 26506-6315USA

In the present article,coarse grained Dissipative Particle Dynamics simulation with implementation of electrostatic interactions is developed in constant pressure and surface tension ensemble to elucidate how the antimicrobial peptidemolecules affect bilayer cellmembrane structure and kill *** find that peptideswith different chemical-physical properties exhibit differentmembrane obstructing *** molecules can destroy vital functions of the affected bacteria by translocating across their membranes via worm-holes,or by associating with membrane lipids to form hydrophilic cores trapped inside the hydrophobic domain of the *** the latter model,the affected membranes are strongly buckled,in accord with very recent experimental observations[*** et al.,***.,5(2.10),pp.2.0-2.5].

关键词： Antimicrobial peptide bilayer membrane dissipative particle dynamics

Microwave absorption and thermal properties of coral-like SiC aerogel composites prepared by water glass as a silicon source

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International Journal of Minerals,Metallurgy and Materials 2023年第7期30卷 1375-1387页

作者： Xinyuan Zhang Chenkang Xia weihai Liu Mingyuan Hao Yang Miao Feng Gao College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China

As a heat-resistant wave-absorbing material,silicon carbide(SiC)aerogel has become a research hotspot at ***,the most common silicon sources are organosilanes,which are costly and *** this work,SiC aerogels were successfully prepared by using water glass as the silicon ***,the microstructure and chemical composition of SiC aerogels were controlled by adjusting the Si to C molar ratio during the sol–gel process,and the effect on SiC aerogel microwave absorption properties was *** SiC aerogels prepared with Si:C molar ratio of 1:1 have an effective electromagnetic wave absorption capacity,with a minimum reflection loss value of-46.30 dB at 12.88 GHz and an effective frequency bandwidth of 4.02.*** also have good physical properties,such as the density of0.0444 g/cm^(3),the thermal conductivity of 0.062. W/(m·K),and the specific surface area of 1099 m^(2./*** lightweight composites with microwave-absorbing properties and low thermal conductivity can be used as thermal protection materials for space shuttles and reusable carriers.

关键词： water glass silicon carbide aerogel microwave absorbing thermal insulation performance

Azomethine ylide-formation from N-phthaloylglycine by photoinduced decarboxylation:A theoretical study

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Science China Chemistry 2012年第10期55卷 2089-2094页

作者： FANG Qiu DING LiNa FANG weihai College of Chemistry Beijing Normal UniversityBeijing 100875China

In this work, we report the first CASPT2./CASSCF study of the mechanism of the photodecarboxylation of N-phthaloylglycine. The charge transfer excited state S CT （ 1∏∏＊） is initially populated upon irradiation at 2.6 nm. As a result of a fast internal conversion to the lowest excited singlet state S CT-N （ 1∏∏＊）, this state becomes a favorable precursor state for proton transfer, which triggers decarboxylation. Actually, the excited state intramolecular proton transfer （ESIPT） and decarboxylation processes proceed in an asynchronous concerted way. The ESIPT process is accomplished in the S CT-N （ 1∏∏＊） state, but the CO 2.molecule is finally formed in the ground state via the S CT /S 0 conical intersection. Azomethine ylide is formed in the ground state as a complex with CO 2.. A barrier of ~15 kcal/mol indicates that azomethine ylide is stable in the ground state, which is consistent with the experimental findings. This work provides mechanistic details about the formation of azomethine ylide by photoreaction of N-phthaloylglycine.

关键词： N-phthaloylglycine photodecarboxylation excited state intramolecular proton transfer CASPT2./CASSCF method

椎板间开窗术与经皮椎间孔镜手术在老年腰椎间盘突出症中的应用价值

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中华老年多器官疾病杂志 2024年第6期23卷 431-435页

作者：王维海杜壮文王恩梁琼海市人民医院脊柱外科海南琼海571400

目的比较椎板间开窗术与经皮椎间孔镜手术在老年腰椎间盘突出症中的应用价值。方法回顾性分析2.2.年5月至2.2.年5月琼海市人民医院收治的156例老年腰椎间盘突出症手术患者的临床资料,根据术式差异将患者分为开窗组(n=75例)和椎间孔镜... 详细信息

目的比较椎板间开窗术与经皮椎间孔镜手术在老年腰椎间盘突出症中的应用价值。方法回顾性分析2.2.年5月至2.2.年5月琼海市人民医院收治的156例老年腰椎间盘突出症手术患者的临床资料,根据术式差异将患者分为开窗组(n=75例)和椎间孔镜组(n=81例),比较两组患者手术指标、手术效果等情况。采用SPSS 2..0统计软件进行数据分析,根据数据类型分别采用t检验或χ^(2.检验进行组间比较。结果椎间孔镜组切口长度、术中出血量及住院时间均小于开窗组,手术时间长于开窗组,差异有统计学意义(P2.月腰背部疼痛视觉模拟评分(VAS)、Oswestry功能障碍指数(ODI)均低于术前,日本骨科协会(JOA)评分高于术前,差异有统计学意义(P0.05)。两组患者优良率、并发症发生率及翻修率比较,差异均无统计学意义(P>0.05)。椎间孔镜组复发率高于开窗组(6.17%和0.00%),差异有统计学意义(P<0.05)。结论经皮椎间孔镜手术及椎板间开窗术治疗老年腰椎间盘突出症疗效相当,经皮椎间孔镜手术在减少切口长度、降低术中出血量及缩短住院时间方面具有优势,但在复发率及翻修率方面不及椎板间开窗术,故不可盲目采用经皮椎间孔镜手术。

关键词：老年人腰椎间盘突出症椎板间开窗术经皮椎间孔镜

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生成式人工智能在施工图绘制中的应用与前景

建筑电气 2024年第S02期43卷 79-84页

作者：王梦衍李伟海宋嘉琪中国联合工程有限公司杭州市310051

探讨生成式人工智能(AIGC)在施工图绘制中的应用与前景,分析其技术发展趋势,并预测其在建筑行业中的潜在影响。通过构建技术评估矩阵,综合考量AIGC的技术优势、挑战、应用范围及研究方向,旨在为建筑行业专业人士提供决策支持。研究指出,... 详细信息

探讨生成式人工智能(AIGC)在施工图绘制中的应用与前景,分析其技术发展趋势,并预测其在建筑行业中的潜在影响。通过构建技术评估矩阵,综合考量AIGC的技术优势、挑战、应用范围及研究方向,旨在为建筑行业专业人士提供决策支持。研究指出,AIGC在提高设计效率、优化项目管理及推动行业数字化转型方面具有显著潜力。同时,也强调数据标准化、模型可解释性、法律伦理及用户培训等关键因素在AIGC应用中的重要性。预测AIGC将显著提升工程设计的质量和效率,为建筑行业的创新发展贡献力量。

关键词：生成式人工智能施工图绘制数字化

I_(2.界面修饰对全无机CsPbBr_(3)钙钛矿太阳能电池性能的影响

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无机化学学报 2024年第7期40卷 1290-1300页

作者：王则远郑松志李浩翁敬菠王威汪杨孙伟海华侨大学材料科学与工程学院物理化学研究所环境友好功能材料教育部工程研究中心福建省光电功能材料重点实验室厦门361021

通过在CsPbBr_(3)薄膜上旋涂一次I_(2.的异丙醇溶液以修饰CsPbBr_(3)吸光层,钝化CsPbBr_(3)层表面缺陷,改善CsPbBr_(3)薄膜形貌。同时通过利用环境友好的绿色溶剂水溶解CsBr,显著提高了其溶解度,减少了旋涂次数,简化了电池制备流程。实... 详细信息

通过在CsPbBr_(3)薄膜上旋涂一次I_(2.的异丙醇溶液以修饰CsPbBr_(3)吸光层,钝化CsPbBr_(3)层表面缺陷,改善CsPbBr_(3)薄膜形貌。同时通过利用环境友好的绿色溶剂水溶解CsBr,显著提高了其溶解度,减少了旋涂次数,简化了电池制备流程。实验结果表明,在CsPbBr_(3)钙钛矿太阳能电池(perovskite solar cells,PSCs)中,使用5 mg·mL^(-1)I_(2.的异丙醇溶液界面修饰的器件具有最佳光伏性能,其最高开路电压(open-circuit voltage,V_(OC))为1.55 V,短路电流密度(short circuit current density,J_(SC))为7.45 mA·cm^(-2.,填充因子(fill factor,FF)为85.54%,光电转换效率(photoelectric conversion efficiency,PCE)达到了9.88%。

关键词：全无机钙钛矿太阳能电池 CsPbBr_(3) I_(2.界面修饰

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锡林郭勒草原土壤碳氮分布及其影响因素研究

内蒙古林业科技 2024年第2期50卷 6-10页

作者：贾维海云博音席彦飞呼和浩特市林业和草原局综合保障中心内蒙古呼和浩特010010 亿特利工程技术集团有限公司内蒙古呼和浩特010022

为阐明锡林郭勒草原土壤碳、氮空间分布特征及其环境影响因素,本研究以锡林郭勒不同生境草原土壤为研究对象,分析草原土壤碳、氮含量的空间分异规律,探究草原环境气候因子变化趋势及其对土壤碳、氮动态的驱动关系。结果表明:(1)锡林郭... 详细信息

为阐明锡林郭勒草原土壤碳、氮空间分布特征及其环境影响因素,本研究以锡林郭勒不同生境草原土壤为研究对象,分析草原土壤碳、氮含量的空间分异规律,探究草原环境气候因子变化趋势及其对土壤碳、氮动态的驱动关系。结果表明:(1)锡林郭勒草原土壤有机碳含量平均为1.46%,表现为草甸草原>典型草原>盐生草甸>沙地典型草原>荒漠草原;土壤全氮含量平均为0.2.%,表现为草甸草原>典型草原>沙地典型草原>荒漠草原>盐生草甸;(2.不同类型草原土壤有机碳含量均呈现出随着土壤深度增加而降低的变化趋势,但土壤全氮有明显的垂直空间异质性,草甸草原及盐生草甸土壤全氮含量随土层加深而降低,其余类型草原均以中间层含量最高,表层及深层土壤全氮含量较低;(3)锡林郭勒草原浅层土壤有机碳含量与土壤含水率、土壤容重及土壤孔隙度呈显著相关性,土壤全氮含量与土壤pH值及土壤含水率显著正相关(;4)锡林郭勒草原土壤有机碳含量受气候因素的影响较为显著,呈明显的相关性,土壤全氮含量受气候因素影响较小。

关键词：有机碳全氮环境因子空间分布锡林郭勒草原

State-feedback H_2.H-infinity controller design with D-stability constraints for stochastic systems

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控制理论与应用（英文版） 2007年第3期5卷 291-294页

作者： Zhongwei LIN weihai ZHANG College of Information and Electrical Engineering Shandong University of Science and Technology Qingdao Shandong 266510 China

This paper addresses the state-feedback H2.H-infinity controller design that satisfies D-stability constraints for stochastic systems. Firstly, the concept of regional stability for stochastic systems is defined in linear matrix inequality（LMI） regions; Secondly, the characterization about stochastic D-stability is presented. This paper introduces a new technique to solve the regional stability problem for stochastic systems, which is different from the pole placement technique ever used in deterministic systems. Based on this, in the state-feedback case, mixed H2.H-infinity synthesis with D-stability constraints is discussed via LMI optimization.

关键词： LMI region D-stability H-infinity control