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海南习用药材酸藤子的质量标准研究

生物资源 2024年第1期46卷 79-86页

作者：庄重沈青邱秀儒刘洋洋李文兰中国医学科学院药用植物研究所海南分所海南省南药资源保护与开发利用重点实验室海南海口570311 哈尔滨商业大学药学院黑龙江哈尔滨150076 琼海市中医院海南琼海571400

为了制定海南习用药材酸藤子的质量标准,以2020年版《中国药典》质量鉴定基本原则为指导,采用性状观察法、显微观察法、薄层色谱法、烘干法、总灰分测定法、水溶性热浸法、紫外-可见分光光度法分别研究酸藤子的性状和显微结构特征,水分... 详细信息

为了制定海南习用药材酸藤子的质量标准,以2020年版《中国药典》质量鉴定基本原则为指导,采用性状观察法、显微观察法、薄层色谱法、烘干法、总灰分测定法、水溶性热浸法、紫外-可见分光光度法分别研究酸藤子的性状和显微结构特征,水分、总灰分、水溶性浸出物以及总黄酮含量。明确了酸藤子性状和显微结构特征,建立了其薄层鉴别方法;拟规定酸藤子药材水分不得超过13.0%,总灰分不得超过12.0%,水溶性浸出物含量不得少于20.0%,总黄酮含量不得少于1.3%。初步拟定了海南习用药材酸藤子质量标准,为酸藤子进一步的质量控制和药用开发提供参考。

关键词：酸藤子质量标准习用药材

A Study of a Molecular Mechanics Field Used in Simulating Enantiorecognition

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Chinese Chemical Letters 1999年第5期10卷 415-418页

作者： He qing shen qing Hat WANG Dao Qian ZHU Liang Mo ZHOU(Dalian Institute of Chemical Physic. Chinese Academy of Sciences. Dalian 116012) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116012 China

A molecular mechanics field, Alchemy II, was utilized to model the chiral recognition between S-N-acetyl-alpha-methyl-alpha-naphthylamine and (R, S)-N-(3, 5-dinitrophrnyl)-alpha-methyl-benzeneacetamide and between beta-cyclodextrin and (R, S)-fenoprofen. Some preliminary results have: been obtained to sustain the three-point action models and the induce-fit action in enantiorecognition.

关键词： molecular mechanics simulating enantiorecognition

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智能仓储场景下的无线信道分析

中国检验检测 2024年第3期32卷 3-4,59页

作者：庞新华沈庆飞唐维付超周鑫武彤中国计量科学研究院北京100029

智能仓储作为工业物联网的典型应用场景,货物的自动化拣选与搬运需要借助各种无线通信技术的支持。无线信道扮演着重要的角色,因此,亟需对智能仓储场景无线信道进行深入研究。通过实地调研,提炼并分析了智能叉车场景和自动引导车场景两... 详细信息

智能仓储作为工业物联网的典型应用场景,货物的自动化拣选与搬运需要借助各种无线通信技术的支持。无线信道扮演着重要的角色,因此,亟需对智能仓储场景无线信道进行深入研究。通过实地调研,提炼并分析了智能叉车场景和自动引导车场景两个主要的智能仓储子场景,对它们的多径、遮挡等信道特性及形成机理进行了深入分析和说明。通信产品的抗信道衰落性能是产品质量认证的关键,智能仓储场景的信道特性研究将有力提升无线设备系统的质量认证工作水平。

关键词：无线信道智能仓储通信产品认证通信质量

NONPARALLEL BOUNDARY LAYER STABILITY IN HIGH SPEED FLOWS

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Transactions of Nanjing University of Aeronautics and Astronautics 2008年第2期25卷 81-88页

作者：郭欣唐登斌沈清南京航空航天大学航空宇航学院航天空气动力技术研究院

The parabolized stability equations （PSEs） for high speed flows, especially supersonic and hypersonic flows, are derived and used to analyze the nonparallel boundary layer stability. The proposed numerical techniques for solving PSE include the following contents： introducing the efficiently normal transformation of the boundary layer, improving the computational accuracy by using a high-order differential scheme near the wall, employing the predictor-corrector and iterative approach to satisfy the important normalization condition, and implementing the stable spatial marching. Since the second mode dominates the growth of the disturbance in high Mach number flows, it is used in the computation. The evolution and characteristics of the boundary layer stability in the high speed flow are demonstrated in the examples. The effects of the nonparallelizm, the compressibility and the cooling wall on the stability are analyzed. And computational results are in good agreement with the relevant data.

关键词： high speed flow boundary layers nonparallelism parabolized stability equations

Thiourea-assisted coating of dispersed copper electrocatalysts on Si photocathodes for solar hydrogen production

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Journal of Energy Chemistry 2020年第1期29卷 75-80,I0004页

作者： Pin Wang Ziyu Yin Linfeng Gao Hui Li Tongyu Zhang qing shen Jun Lv Yingfang Yao Wenjun Luo Zhigang Zou Ecomaterials and Renewable Energy Research Center(ERERC) Department of PhysicsNanjing UniversityNanjing 210093JiangsuChina Jiangsu Key Laboratory for Nano Technology Nanjing National Laboratory of Solid State MicrostructuresCollege of Engineering and Applied SciencesNanjing UniversityNanjing 2J0093JiangsuChina Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech UniversityNanjing 211816JiangsuChina Department of Engineering Science The University of Electro Communications1-5-1 ChofugaokaChofiiTokyo 182-8585Japan Electronic Information Engineering College of Sanjiang University Nanjing 210012JiangsuChina Jiangsu Key Laboratory for Nano Technology Nanjing National Laboratory of Solid State Microstructures.College of Engineering and Applied SciencesNanjing UniversityNanjing 210093JiangsuChina

Photoelectrochemical water splitting can convert solar energy into clean hydrogen energy for *** is desirable to explore non-precious electrocatalysts for practical applications of a photoelectrode in a large ***,we developed a facile spin-coating and in-situ photoelectrochemical reduction method to prepare a dispersed Cu electrocatalyst on a Si photocathode,which improves the performance *** find that thiourea in the precursor solution for spin-coating plays an important role in obtaining dispersed Cu particles on the surface of a Si *** thiourea in the precursor,the Cu/Si photocathode shows higher performance than the one without ***,the Cu/Si photocathode also indicates good stability after 16 h illumination.

关键词： Thiourea Hydrogen evolution reaction In-situ photoelectrochemical reduction Cu electrocatalyst

Surface-Modified Graphene Oxide/Lead Sulfide Hybrid Film-Forming Ink for High-Efficiency Bulk Nano-Heterojunction Colloidal Quantum Dot Solar Cells

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Nano-Micro Letters 2020年第9期12卷 56-69页

作者： Yaohong Zhang Guohua Wu Chao Ding Feng Liu Dong Liu Taizo Masuda Kenji Yoshino Shuzi Hayase Ruixiang Wang qing shen Faculty of Informatics and Engineering The University of Electro-CommunicationsTokyo 182-8585Japan School of Materials Science and Engineering Shaanxi Normal UniversityXi’an 710119People’s Republic of China X-Frontier Division Toyota Motor CorporationShizuoka 471-8571Japan Department of Electrical and Electronic Engineering University of MiyazakiMiyazaki 889-2192Japan Beijing Engineering Research Centre of Sustainable Energy and Buildings Beijing University of CivilEngineering and ArchitectureBeijing 102616People’s Republic of China

Solution-processed colloidal quantum dot solar cells(CQDSCs) is a promising candidate for new generation solar *** obtain stable and high performance lead sulfide(PbS)-based CQDSCs,high carrier mobility and low non-radiative recombination center density in the PbS CQDs active layer are *** order to effectively improve the carrier mobility in PbS CQDs layer of CQDSCs,butylamine(BTA)-modified graphene oxide(BTA@GO) is first utilized in PbS-PbX2(X=I-,Br-) CQDs ink to deposit the active layer of CQDSCs through one-step spin-coating *** surface treatment of GO dramatically upholds the intrinsic superior hole transfer peculiarity of GO and attenuates the hydrophilicity of GO in order to allow for its good dispersibility in ink *** introduction of B TA@GO in CQDs layer can build up a bulk nano-heterojunction architecture,which provides a smooth charge carrier transport channel in turn improves the carrier mobility and conductivity,extends the carriers lifetime and reduces the trap density of PbS-PbX2 CQDs ***,the BTA@GO/PbS-PbX2 hybrid CQDs film-based relatively large-area(0.35 cm2) CQDSCs shows a champion power conversion efficiency of 11.7% which is increased by 23.1% compared with the control device.

关键词： Quantum dot solar cells PbS colloidal quantum dots Hole extraction Graphene oxide Surface modified

Gene transfer into primary cultures of fetal neural stem cells by a recombinant adenovirus carrying the gene for green fluorescent protein

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第4期9卷 299-305页

作者： Yong FU shen-qing WANG Ying-peng LIU Guo-peng WANG Jian-ting WANG Shu-sheng GONG Department of Otorhinolaryngology the First Affiliated Hospital School of Medicine Zhejiang University Hangzhou 310003 China Department of Otorhinolaryngology Union Hospital of Tongii Medical College Huazhong University of Science and Technology Wuhan 430022 China Department of Surgery-Otolaryngology University of Kentucky Medical Center Lexington Kentucky 40536 USA Department of Surgery-Otolaryngology Beijing Tongren Hospital Capital Medical University Beijing 100730 China

Objective: To evaluate the transduction efficiency of a recombinant adenovirus carrying the gene for green fluorescent protein (Ad-GFP) into the primary cultures of fetal neural stem cells (NSCs) by the expression of GFP. Methods: The Ad-GFP was constructed by homologous recombination in bacteria with the AdEasy system; NSCs were isolated from rat fetal hippocampus and cultured as neurosphere suspensions. After infection with the recombinant Ad-GFP, NSCs were examined with a fluorescent microscopy and a flow cytometry for their expression of GFP. Results: After the viral infection, flow cytometry analysis revealed that the percentage of GFP-positive cells was as high as 97.05%. The infected NSCs sustained the GFP expression for above 4 weeks. After differentiated into astrocytes or neurons, they continued to express GFP efficiently. Conclusion: We have success- fully constructed a viral vector Ad-GFP that can efficiently infect the primary NSCs. The reporter gene was showed fully and sustained expression in the infected cells as well as their differentiated progenies.

关键词： Recombinant adenovirus vector Viral infection Fetal neural stem cells Green fluorescent protein

D-A-D structured selenadiazolesbenzothiadiazole-based near-infrared dye for enhanced photoacoustic imaging and photothermal cancer therapy

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Chinese Chemical Letters 2021年第4期32卷 1580-1585页

作者： Zijin Cheng Tian Zhang Weili Wang qing shen Ying Hong Jinjun Shao Xiaoji Xie Zhenghao Fei Xiaochen Dong Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(1AM) Nanjing Tech UniversityNanjing 210009China Applied Chemistry&Environmental Engineering Yancheng Teachers UniversityYancheng 224051China School of Chemistry and Materials Science Nanjing University of Information Science&TechnologyNanjing 210044China

Near-infrared(NIR)small molecular organic dyes as photothermal agents for cancer photothermal therapy(PTT)have attracted considerable research ***,two donor-acceptor-donor(D-A-D)structured NIR dyes,BBTT and SeBTT,are rationally designed,where the only difference is one heteroatom within the acceptor unit varying from sulfur to selenium(Se).More importantly,SeBTT NPs exhibit stronger NIR absorbance and higher photothermal conversion efficiency(PTCE≈65.3%).In vivo experiments illustrate that SeBTT NPs can be utilized as a high contrast photoacoustic imaging(PAI)agent,and succeed in tumor suppression without noticeable damage to main organs under NIR *** study presents an effective molecular heteroatom surgery strategy to regulate the photothermal properties of NIR small molecules for enhanced PAI and PTT.

关键词： Photothermal Near-infrared dye Cancer therapy Donor-acceptor Selenadiazolesbenzothiadiazole

Middle ear foreign body causing cholesteatoma and external auditory canal granuloma: a case report

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Journal of Otology 2012年第1期7卷 25-27页

作者： ZHOU Shui-Hong WANG Qin-Ying WANG shen-qing Department of Otolaryngology The First Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhouZhejiang310003China

Objective Patients with unilateral ear discharge and hearing loss often have external or middle ear diseases. We present a 55-year-old man who suffered from persistent ear discharge and hearing loss in the left ear. Local findings showed that his left ear canal was filled with a large amount of granulation tissue, with purulent, foul-smelling discharge. Computed tomography indicated left middle ear cholesteatoma and mass shadow in the left external auditory canal. Modified radical mastoidectomy was performed. A piece of white plastic stick was found in the middle ear during the operation. Foreign body-induced cholesteatoma and external auditory canal granuloma in adults are very rare. We present this rare case so that these conditions can be better recognized and understood.

关键词： foreign body cholesteatoma external auditory canal middle ear