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Passivation of PEA^(+)to CsPbI_(3)(110)Surface States:From the First Principles Calculations

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Journal of Renewable Materials 2023年第3期11卷 1293-1301页

作者： wei hu Fengjuan Si Hongtao Xue Wensheng Li Jun hu Fuling Tang School of Materials Science and Engineering State Key Laboratory of Advanced Processing and Recycling of Nonferrous MetalsLanzhou University of TechnologyLanzhou730050China Department of Materials Engineering Lanzhou Institute of TechnologyLanzhou730050China School of Peili Mechanical Engineering Lanzhou City CollegeLanzhou730070China School of Chemical Engineering Northwest UniversityXi’an710069China

This work investigates the effect of passivation on the electronic properties of inorganic perovskite CsPbI_(3)materials by using first-principles calculations with density functional theory(DFT).The passivation effect after the addition of Phenylethylamine(PEA+)molecule to CsPbI_(3)(110)surface is *** results of density of states(DOS)calculations show that the CsPbI_(3)(110)surface model with I atom terminated reveals new electronic DOS peaks(surface states)near the Fermi *** surface states are mainly due to the contribution of I-5p orbital and are harmful to the CsPbI_(3)-based solar cells because they reduce the photoelectric conversion *** surface states near the Fermi level are significantly reduced,and the decline rate reaches 38.8%with the addition with PEA+molecule to the CsPbI3(110)surface.

关键词： First-principles calculations surface states passivation

Chondromyxoid fibroma of the cervical spine:A case report

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World Journal of Clinical Cases 2022年第17期10卷 5748-5755页

作者： Cheng Li Sen Li wei hu Fifth Clinical Medical College Guilin Medical UniversityGuilin 541002Guangxi Zhuang Autonomous RegionChina

BACKGROUND Chondromyxoid fibroma(CMF)is an unusual benign tumour of cartilaginous tissues that may be confused with other malignant *** is rarely seen in the cervical *** SUMMARY A 24-year-old young woman was admitted to the hospital because of neck and shoulder *** tomography,magnetic resonance imaging,X-ray and other imaging examinations of the cervical spine and laboratory-related indicators combined with intraoperative pathology revealed that the patient had cervical *** performed total resection of the vertebral body and intervertebral disc,and internal fixation was performed to simultaneously maintain the stability of the entire *** clinical results from extensive resection were *** the 2-year follow-up,the patient's symptoms had not *** CMF is a benign primary bone tumour that is rarely located in the vertebral *** initial diagnosis of these tumours is important for appropriate *** bloc surgical resection of the tumour is the cornerstone of treatment.

关键词： Chondromyxoid fibroma Benign cartilaginous tumour Cervical tumour Case report

A perspective on fish gonad manipulation for biotechnical applications

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Chinese Science Bulletin 2006年第1期51卷 1-7页

作者： hu wei WANG Yaping Zhu Zuoyan State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology the Chinese Academy of Sciences Wuhan 430072 China

The gonad is an essential organ for gen- erating sperm and ova in vertebrates. This review describes several pilot studies on gonad gene manipulation and development in fish. With antisense RNA techniques, we suppressed the gonad devel- opment, and thus the fertility, of an antisense gonad- otropin-releasing hormone (sGnRH) transgenic common carp. Then, using a tissue-specific exoge- nous gene excision strategy with sexual compensa- tion, we knocked out the gonad-specific transgene. Under the control of the rainbow trout protamine promoter, the transgenic fish expressed the reporter gene eGFP specifically in the spermary. These re- sults indicate that the fish gonad is a new model or- gan that can improve contemporary biotechnology experiments. Herein we discuss the potential of fish gonad manipulation for resolving important biosafety problems regarding transgenic fish generation and producing the new transgenic animal bioreactor.

关键词：输异基因鱼生物技术性腺脊椎动物 RNA

Progress in the evaluation of transgenic fish for possible ecological risk and its containment strategies

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Science China(Life Sciences) 2007年第5期50卷 573-579页

作者： hu wei WANG YaPing Zhu ZuoYan State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China

Genetically improved transgenic fish possess many beneficial economic traits; however, the commer-cial aquaculture of transgenic fish has not been performed till date. One of the major reasons for this is the possible ecological risk associated with the escape or release of the transgenic fish. Using a growth hormone transgenic fish with rapid growth characteristics as a subject, this paper analyzes the following: the essence of the potential ecological risks posed by transgenic fish; ecological risk in the current situation due to transgenic fish via one-factor phenotypic and fitness analysis, and mathe-matical model deduction. Then, it expounds new ideas and the latest findings using an artificially simulated ecosystem for the evaluation of the ecological risks posed by transgenic fish. Further, the study comments on the strategies and principles of controlling these ecological risks by using a trip-loid approach. Based on these results, we propose that ecological risk evaluation and prevention strategies are indispensable important components and should be accompanied with breeding re-search in order to provide enlightments for transgenic fish breeding, evaluation of the ecological risks posed by transgenic fish, and development of containment strategies against the risks.

关键词： transgenic fish, ecological risks, countermeasures

Germanium/perovskite heterostructure for high-performance and broadband photodetector from visible to infrared telecommunication band

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Light(Science & Applications) 2019年第1期8卷 192-201页

作者： wei hu hui Cong wei huang Yu huang Lijuan Chen Anlian Pan Chunlai Xue Key Laboratory for Micro-Nano Physics and Technology of hunan Province School of Physics and ElectronicsHunan UniversityChangshaHunan 410082China State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Key Laboratory for Micro-Nano Physics and Technology of hunan Province College of Materials Science and EngineeringHunan UniversityChangshaHunan 410082China

A high-performance and broadband heterojunction photodetector has been successfully *** heterostructure device is based on a uniform and pinhole-free perovskite film constructed on top of a single-crystal germanium *** perovskite/germanium photodetector shows enhanced performance and a broad spectrum compared with the single-material-based *** photon response properties are characterized in detail from the visible to near-infrared *** an optical fibre communication wavelength of 1550 nm,the heterojunction device exhibits the highest responsivity of 1.4 A/*** performance is promoted because of an antireflection perovskite coating,the thickness of which is optimized to 150 nm at the telecommunication *** a visible light wavelength of 680 nm,the device shows outstanding responsivity and detectivity of 228 A/W and 1.6×10^(10) Jones,*** excellent properties arise from the photoconductive gain boost in the heterostructure *** presented heterojunction photodetector provides a competitive approach for wide-spectrum photodetection from visible to optical communication *** on the distinguished capacity of light detection and harvesting from the visible to near-infrared spectrum,the designed germanium/perovskite heterostructure configuration is believed to provide new building blocks for novel optoelectronic devices.

关键词： communication heterojunction heterostructure

Optimized Separation of Nine Xanthones by Microemulsion Electrokinetic Chromatography

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Chinese Chemical Letters 2002年第9期13卷 877-880页

作者： Tao BO hu wei LIU Ke An LI Chemistry Department Peking UniversityBeijing 100871

A microemulsion electrokinetic chromatography method has been firstly used for the separation of the therapeutically important xanthones from Securidaca inappendiculata. The separation of the nine xanthones was systematically optimized with respect to pH, composition of microemulsion, addition of cyclodextrins, applied voltage and column temperature. Baseline separation was successfully achieved for the nine xanthones, which was also compared with that by micellar electrokinetic chromatography.

关键词： Separation xanthones Securidaca inappendiculata microemulsion electrokinetic chromatography micellar electrokinetic chromatography.

Enantioseparation of Racemic Anti-hepatitis New Drug Bicyclol with Crystallization

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Chinese Chemical Letters 2005年第11期16卷 1471-1473页

作者： wei hu Yan LI Chun Zhen ZHANG Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050

The enantioseparation of anti-hepatitis new drug （±）-bicyclol was performed by optically active alkaloid. The alcoholic acid, the hydrolysate of bicyclol was reacted with optically active alkaloid, such as brucine, strychnine, quinidine etc., the diastereoisomeric salts were obtained by fractional recrystallization, then separately decomposed and esterified to obtain the two enantiomers of bicyclol. The pharmacological study showed that the effect of （-）-bicyclol was more potent than racemic bicyclol two times and the potency of （＋）-bicyclol was incative.

关键词： (±)-Bicyclol,4,4'-dimethoxy-2,3,2 3'-bis(methylenedioxy)-6-hydroxymethyl-6'-methoxy-carbonyl biphenyl anti-hepatitis resolution.

Selective debenzylation of benzyl esters by silica-supported sodium hydrogen sulphate

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Chinese Chemical Letters 2009年第10期20卷 1157-1160页

作者： Yan wei hu Li Zuo De Yong Ye Wen hu Duan Department of Medicinal Chemistry School of Pharmacy Fudan University Shanghai 200032 China Department of Medicinal Chemistry Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 China Department of Pharmaceutical Sciences School of Pharmacy East China University of Science & Technology Shanghai 200237 China

A new debenzylation of benzyl esters by silica-supported sodium hydrogen sulfate is described. The debenzylation could be achieved selectively and efficiently in good to excellent yields without affecting sensitive fu... 详细信息

关键词： Debenzylation Benzyl esters Silica-supported sodium hydrogen sulphate

The regulatory network mediated by circadian clock genes is related to heterosis in rice

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Journal of Integrative Plant Biology 2015年第3期57卷 300-312页

作者： Guojing Shen wei hu Bo Zhang Yongzhong Xing National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research (Wuhan) Huazhong Agricultural University

Exploitation of heterosis in rice（Oryza sativa L.） has contributed greatly to global food *** this study,we generated three sets of reciprocal F1 hybrids of indica and japonica subspecies to evaluate the relationship between yield heterosis and the circadian *** were no differences in trait performance or heterosis between the reciprocal hybrids,indicating no maternal effects on *** indica-indica and indica-japonica reciprocal F1 hybrids exhibited pronounced heterosis for chlorophyll and starch content in leaves and for grain yield/*** contrast,the japonica-japonica F1 hybrids showed low *** three circadian clock genes investigated expressed in an above-high-parent pattern（AHP）at seedling stage in all the *** five genes downstream of the circadian clock,and involved in chlorophyll and starch metabolic pathways,were expressed in AHP in hybrids with strong better-parent heterosis（BPH）.Similarly,three of these Research Arfive genes in the japonica-japonica F1 hybrids showing low BPH were expressed in positive overdominance,but the other two genes were expressed in additive or negative *** results indicated that the expression patterns of circadian clock genes and their downstream genes are associated with heterosis,which suggests that the circadian rhythm pathway may be related to heterosis in rice.

关键词： Circadian clock better-parent heterosis biomass overdominance yield