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Pseudo-Effective Vector Bundles with Vanishing First Chern Class on Astheno-Kähler Manifolds

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Chinese Annals of Mathematics,Series B 2023年第6期44卷 819-826页

作者： Yong CHEN xi zhang School of Mathematics and Statistics Nanjing University of Science and TechnologyNanjing 210094China

Let E be a holomophic vector bundle over a compact Astheno-Kähler manifold(M,ω).The authors would prove that E is a numerically flat vector bundle if E is pseudoeffective and the first Chern class c_(1)^(BC)(E)is zero.

关键词： Pseudo-effective Astheno-Kähler Numerically flatness

Identification of salivary proteins in the whitefly Bemisia tabaci by transcriptomic and LC-MS/MS analyses

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Insect Science 2021年第5期28卷 1369-1381页

作者： Hai-Jian Huang Zhuang-xin Ye gang Lu Chuan-xi zhang Jian-Ping Chen Jun-Min Li State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang ProvinceInstitute of Plant VirologyNingbo UniversityNingboZhejiang315211.China

The whitefly Bemisia tabaci is a notorious agricultural pest of many crops *** it is thought that *** secretes saliva into the host plant to counter plant defenses,knowledge on the whitefly salivary proteome is ***,we characterized the gene/protein repertoires of *** salivary glands and secreted saliva by transcriptomic and liquid chromatography tandem mass spectroscopy analyses.A total of 698 salivary gland-enriched unigenes and 171 salivary proteins were *** analysis between the *** salivary proteins and those of different arthropod species revealed numerous similarities in proteins associated with binding,hydrolysis,and oxidation-reduction,which demonstrates a degree of conservation across herbivorous *** were 74 proteins only identified in *** saliva,of which 34 were *** addition,13 salivary proteins,of which I1 were ***-specific,were differentially regulated when *** fed on different *** results provide a good resource for future functional studies of whitefly salivary effectors,and might be useful in pest management.

关键词： Bemisia tabaci proteome salivary protein species-specific transcriptome

Effects of Monoclonal Antibody Against Porcine 40-kDa Adipocyte-Specific Membrane Protein on Endocrine Secretion in Pigs

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Agricultural Sciences in China 2009年第8期8卷 1004-1009页

作者： LIU Ling-yun HU Hong-mei ZHAO Su-mei zhang xi DUAN gang GAO Shi-zheng Kunming Normal School Kunming 650201 P.R.China Institute of Animal Science and Veterinary Medicine Shandong Academy of Agricultural Sciences Jinan 250100 P.R.China Yunnan Key' Laboratory of Animal Nutrition attd Feed Yunnan Agricultural University Kunming 650201 P..R. China

The present study was to investigate the effect of monoclonal antibody against porcine 40-kDa adipocyte-specific membrane protein on endocrine secretion in pigs, in order to provide the evidence for application of this antibody to reduce excessive fat deposition in pig production. 40 Landrace×Saba pigs were randomly divided into 8 groups： 2 control groups were given saline with 10 mL, respectively, and the 6 treatment groups were given monoclonal antibody against porcine 40-kDa adipocyte-specific membrane protein with 0.1, 0.5, and 1.0 mg ·kg^-1 body weight at 15 or 60 kg body weight, respectively, all treatments were performed by intraperitoneal injection. The results showed that this monoclonal antibody could significantly reduce serum insulin level and increase levels of serum growth hormone （GH）, insulin-like growth factor-1（IGF-1）, triiodothyronine （T3）, and tetraiodothyronine （T4） either at 15 or 60 kg body weight injection. However, more marked effect was observed at 15 kg body weight treatment. Moreover, the dose-dependent effect of this monoclonal antibody on endocrine secretion was also observed. This result revealed that this monoclonal antibody increased secretion of hormones regulating fat lysis and reduced secretion of hormones regulating fat synthesis, suggests the reduction of porcine excessive fat deposition by this monoclonal antibody was carried out through affecting hormones regulating fat metabolism.

关键词： adipocyte membrane protein monoclonal antibody endocrine pig

Accelerated Sequential Deposition Reaction via Crystal Orientation Engineering for Low-Temperature,High-Efficiency Carbon-Electrode CsPbBr_(3) Solar Cells

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Energy & Environmental Materials 2024年第1期7卷 168-175页

作者： Zeyang zhang Weidong Zhu Tianjiao Han Tianran Wang Wenming Chai Jiaduo Zhu He xi Dazheng Chen gang Lu Peng Dong Jincheng zhang Chunfu zhang Yue Hao State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology&Shaanxi Joint Key Laboratory of Graphene School of MicroelectronicsXidian UniversityXi'an 710071China Guangzhou Wide Bandgap Semiconductor Innovation Center Guangzhou institute of technologyXidian UniversityGuangzhou 510555China Qinghai Huanghe Hydropower Development CO. LTD.Xining810008China

Low-temperature,ambient processing of high-quality CsPbBr_(3)films is demanded for scalable production of efficient,low-cost carbon-electrode perovskite solar cells(PSCs).Herein,we demonstrate a crystal orientation engineering strategy of PbBr_(2)precursor film to accelerate its reaction with CsBr precursor during two-step sequential deposition of CsPbBr_(3)*** a novel strategy is proceeded by adding CsBr species into PbBr_(2)precursor,which can tailor the preferred crystal orientation of PbBr_(2)film from[020]into[031],with CsBr additive staying in the film as CsPb_(2)Br_(5)*** calculations show that the reaction energy barrier of(031)planes of PbBr_(2)with CsBr is lower about 2.28 eV than that of(O2O)***,CsPbBr_(3)films with full coverage,high purity,high crystallinity,micro-sized grains can be obtained at a low temperature of 150℃.Carbon-electrode PSCs with these desired CsPbBr_(3)films yield the record-high efficiency of 10.27%coupled with excellent operation ***,the 1 cm^(2)area one with the superior efficiency of 8.00%as well as the flexible one with the champion efficiency of 8.27%and excellent mechanical bending characteristics are also achieved.

关键词： carbon-electrode perovskite solar cells crystal orientation engineering CsPbBr_(3) low temperature two-step sequential deposition

Clinical Practice Guidelines and Experts’Consensuses for Treatment of Coronavirus Disease 2019(COVID-19)Patients with Chinese Herbal Medicine:A Systematic Review

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Chinese Journal of Integrative Medicine 2020年第10期26卷 786-793页

作者： LI Yu-xi LI Juan zhang Yue TIAN Yan-ping zhang Yong-gang JIN Rong-jiang GUO Yan Mike Clarke School of Acupuncture-Moxibustion and Tuina Chengdu University of Traditional Chinese MedicineChengdu(610032)China School of Health Preservation and Rehabilitation Chengdu University of Traditionai Chinese MedicineChengdu(610032)China West China Hospital Sichuan UniversityChengdu(610032)China xiyuan Hospital China Academy of Chinese Medicine SciencesBeijing(100091)China Northern Ireland Clinical Trials Unit and Methodology Hub Centre for Public HealthQueen's University BelfastBelfastUK

Objective:To systematically review the clinical practice guidelines for the treatment of coronavirus disease 2019(COVID-19)patients with Chinese herbal medicine(CHM),summarize their recommendations and evaluate their ***:Electronic databases,websites of governments,academic associations or organizations for eligible guidelines were searched up to April *** were extracted to summarize recommendations for the use of Chinese herbal formulae and Chinese patent medicine(CPM)for COVID-19 *** methodological quality and reporting quality of the included guidelines were independently evaluated,using the Appraisal of Guidelines for REsearch and Evaluation(AGREE)Ⅱtool and Reporting Items for Practice Guidelines in healthcare(RIGHT)statement,***:Totally 45 guidelines were identififi ed:42(93%)suggested specific CM formulae for treating COVID-19 patients;and 35(78%)assigned patients diagnosed with COVID-19 to 4 stages(early,development,critical and recovery).The recommended formulae and CPMs for each stage with diverse syndrome types have been *** of the included guidelines were of low methodological quality,with only one achieving moderate quality of AGREEⅡ.The frequency with which the 35 items in the Reporting Items for Practice Guidelines in Healthcare(RIGHT)checklist were reported averaged 36.5%across the 45 ***:This systematic review has summarized current recommendations for treating COVID-19 patients with CHM and shows that the general quality of present guidelines is quite *** development of future guidelines should include increased awareness of the features of good quality guidelines.

关键词： coronavirus disease 2019 COVID-19 Chinese medicine herbal medicine clinical practice guideline systematic review

Conditional gene manipulation:Cre-ating a new biological era

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第7期13卷 511-524页

作者： Jian zhang Jing ZHAO Wen-jie JIANG xi-wei SHAN xiao-mei YANG Jian-gang GAO School of Life Science Shandong University Jinan 250100China

To solve the problem of embryonic lethality in conventional gene knockouts, site-specific recombinase （SSR） systems （Cre-loxP, FIp-FRT, and φC31） have been used for tissue-specific gene knockout. With the combination of an SSR system and inducible gene expression systems （tetracycline and tamoxifen）, stage-specific knockout and transgenic expression can be achieved. The application of this ＂SSR＋inducible＂ conditional tool to genomic manipulation can be extended in various ways. Alternatives to conditional gene targeting, such as conditional gene trapping, multipurpose conditional alleles, and conditional gene silencing, have been developed. SSR systems can also be used to construct precise disease models with point mutations and chromosomal abnormalities. With these exciting achievements, we are moving towards a new era in which the whole genome can be manipulated as we wish.

关键词： Site-specific recombinase Gene targeting Gene trapping Inducible systems φC31 system

Relative volume comparison of Ricci flow

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Science China Mathematics 2021年第9期64卷 1937-1950页

作者： gang Tian Zhenlei zhang School of Mathematical Sciences and Beijing International Center for Mathematical Research Peking UniversityBeijing 100871China School of Mathematical Sciences Capital Normal UniversityBeijing 100048China

In this paper we derive a relative volume comparison of Ricci flow under a certain local curvature *** is a refinement of Perelman’s no local collapsing theorem in Perelman(2002).

关键词： Ricci flow relative volume comparison local entropy

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One stone two birds:Dual-effect kinetic regulation strategy for practical lithium–sulfur batteries

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Journal of Energy Chemistry 2022年第2期31卷 302-303页

作者： xi-Yao Li Qiang zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Lithium–sulfur(Li–S)batteries are deemed as one of the most promising energy storage systems due to their ultrahigh theoretical energy density of 2600 Wh kg^(-1) far beyond the current lithium-ion battery technique[1].

关键词： battery lithium Dual

Hot roll bonding between commercially pure titanium and high-strength low-alloy steel using Fe interlayer

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Journal of Iron and Steel Research International 2019年第10期26卷 1126-1136页

作者： xi-yang Chai gang Chen Feng Chai Tao Pan Zhi-gang Yang Cai-fu Yang Department of Structural Steel Central Iron and Steel Research InstituteBeijing 100081China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

Hot roll bonding was carried out between commercially pure titanium TA2 and high-strength low-alloy steel Q390 using no interlayer and Fe interlayer at temperatures of 850,900,950 and 1000℃with a total reduction ratio of 86.7%.Interfacial microstructure and bonding property of clad plates were investigated by electron microscopy and shear *** results showed that with the increase in heating temperature,the shear strength of titanium clad steel plates decreases *** with that of titanium clad steel plates with no interlayer,inserting Fe interlayer between titanium and steel can improve the shear strength at 850 and 900℃but deteriorate the shear strength at 950 and 1000℃.The reason for this consequence was that Fe interlayer prevented the reaction diffusion of C in titanium to form a thinner TiC layer at 850 and 900℃,while Fe interlayer promoted the reaction diffusion of Fe in titanium to generate thicker Fe2Ti and FeTi intermetallic compound layers at 950 and 1000℃.

关键词： Titanium clad steel plate Fe interlayer TiC Intermetallic compound Hot roll bonding