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Recognition of Biotin-functionalized liposomes

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Chinese Chemical Letters 2003年第8期14卷 832-835页

作者： Hai Feng ZHU jun bai li International Joint Lab The Center for Molecular ScienceInstitute of ChemistryChinese Academy of SciencesBeijing 100080

Functionalized liposomes were prepared by mixing the biotin in the lipid vesicle suspensions. The experiments through immersing streptavidin deposited mica into the biotin modified liposome solution testify the spec... 详细信息

关键词： Recognition liposome TEM AFM.

Mechanism of Strength Improvement of Magnetite Pellet by Adding Boron-bearing Iron Concentrate

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Journal of Iron and Steel Research International 2014年第1期21卷 9-15页

作者： Hong-wei GUO jun-li bai Jian-liang ZHANG Hong-ge li School of Metallurgical and Ecological Engineering University of Science and Technology Beijing State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

The mechanism of improving compressive strength of magnetite pellet by adding boron-bearing iron concentrate was studied. Boron-bearing iron concentrate and magnetite were mixed, pelletized and roasted under differ ent roasting conditions. Then, compressive strength of pellets was tested, and polished sections of the roasted pellets were analyzed from the perspective of mineralogy. Finally, the effects of different proportions, roasting temperatures and roasting time of boron-bearing iron concentrate on the compressive strength of magnetite pellets were investigated and explained.

关键词： boron-bearing iron concentrate magnetite pellet compressive strength roasting condition proportion

Transcriptional regulation of fleshy fruit texture

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Journal of Integrative Plant Biology 2022年第9期64卷 1649-1672页

作者： Yanna Shi bai-jun li Guanqing Su Mengxue Zhang Donald Grierson Kun-Song Chen College of Agriculture and Biotechnology Zhejiang UniversityZijingang CampusHangzhou310058 China Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology Zhejiang UniversityZijingang CampusHangzhou310058 China State Agriculture Ministry Laboratory of Horticultural Plant Growth Development and Quality ImprovementZhejiang UniversityZijingang CampusHangzhou310058 China Division of Plant and Crop Sciences School of BiosciencesUniversity of NottinghamSutton Bonington CampusLoughboroughLE125RD UK

Fleshy fruit texture is a critically important quality characteristic of ripe *** is an irreversible process which operates in most fleshy fruits during ripening which,together with changes in color and taste,contributes to improvements in mouthfeel and general *** results mainly from the expression of genes encoding enzymes responsible for cell wall modifications but starch degradation and high levels of flavonoids can also contribute to texture *** fleshy fruit undergo lignification during development and post-harvest,which negatively affects eating *** softening can also lead to physical damage and infection,particularly during transport and storage which causes severe supply chain *** transcription factors(TFs)that regulate fruit texture by controlling the expression of genes involved in cell wall and starch metabolism have been *** TFs directly regulate cell wall targets,while others act as part of a broader regulatory program governing several aspects of the ripening *** this review,we focus on advances in our understanding of the transcriptional regulatory mechanisms governing fruit textural change during fruit development,ripening and *** targets for breeding and future research directions for the control of texture and quality improvement are discussed.

关键词： cell wall lignification softening texture transcription factor

A New Strategy for Architecture of Robust Monolayer Based on Binuclear Palladium (II) Complex of Calix[4]arene Derivative

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Chinese Chemical Letters 2000年第11期11卷 1027-1030页

作者： Wei Jiang HE Fang liU Zhi Feng YE Zi Jian GUO jun bai li Long Gen ZHU State Key Laboratory of Coordination Chemistry Nanjing UniversityNanjing 210093 Laboratory of Colloid and Interface Science Center for Molecular ScienceInstitute of ChemistryThe Chinese Academy of SciencesBeijing 100080

A monolayer which is formed by a binuclear palladium complex of low rim methionine-disubstituted calix[4]arene exhibits extraordinary cohesiveness. Cohesiveness measurement and Brewster Angle Microscopy observation show that the monolayer is uniform and robust. This film is probably formed by self-assembly of precursor complex through strong chloride ion bridge between palladium centers.

关键词： Brewster Angle Microscopy Calixarene Monolayer Robust membrane Viscosity

Epidemiological and clinical characteristics of fifty-six cases of COVID-19 in liaoning Province, China

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World Journal of Clinical Cases 2020年第21期8卷 5188-5202页

作者： Jing-Bo Wang Hai-Tao Wang Lei-Shi Wang Lu-Ping li Jiao Xv Chun Xv Xing-Hai li Yun-Hai Wu Hong-Yan liu bai-jun li Hong Yu Xia Tian Zhi-Yu Zhang Yan Wang Rui Zhao Jin-Yang liu Wei Wang Ye Gu Department of Infectious Disease The Sixth People’s Hospital of ShenyangShenyang 110006Liaoning ProvinceChina Department of General Surgery The Second Affiliated Hospital of Shenyang Medical CollegeShenyang 110002Liaoning ProvinceChina Department of Clinical Laboratory The Sixth People’s Hospital of ShenyangShenyang 110006Liaoning ProvinceChina Department of Intensive Critical Medicine The Sixth People’s Hospital of ShenyangShenyang 110006Liaoning ProvinceChina Department of Infectious Diseases Clinic The Sixth People’s Hospital of ShenyangShenyang 110006Liaoning ProvinceChina

BACKGROUND Pneumonia of uncertain cause has been reported in Wuhan,China since the beginning of early December *** early January 2020,a novel strain ofβ-coronavirus was identified by the Chinese Center for Disease Control and Prevention from the pharyngeal swab specimens of patients,which was recently named severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).There is evidence of human-to-human transmission and familial cluster outbreak of SARSCoV-2 *** World Health Organization(WHO)recently declared the SARS-CoV-2 epidemic a global health *** of February 17,2020,71329 laboratory-confirmed cases(in 25 countries,including the United States and Germany)have been reported *** than its rapid transmission,the epidemiological and clinical characteristics of coronavirus disease 2019(COVID-19)remain *** December 2019,coronavirus disease(named COVID-19 by the WHO)associated with the SARS-CoV-2 emerged in Wuhan,China and spread quickly across the *** To analyze the epidemiological and clinical characteristics of confirmed cases of this disease in liaoning province,a Chinese region about 1800 km north of *** The clinical data of 56 laboratory-confirmed COVID-19 cases due to 2019-nCoV infection were *** cases originated from eight cities in liaoning *** The median age of the patients was 45 years,and 57.1%of them were *** patient had been in direct contact with wild *** them,23 patients(41.1%)had resided in or traveled to Wuhan,27 cases(48.2%)had been in contact with confirmed COVID-19 patients,5 cases(8.9%)had been in contact with confirmed patients with a contact history to COVID-19 patients,and 1 case(1.8%)had no apparent history of ***(75.0%)and cough(60.7%)were the most common *** typical manifestations in lung computed tomography(CT)included ground-glass opacity and patchy shadows,with 67.8%of them being *** the patients in the cohort,78.6%

关键词： SARS-CoV-2 COVID-19 Epidemiological characteristics Clinical characteristics Hypoxemia Acute respiratory distress syndrome

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： lin Peng Yu bai Hang li Meixiu Qu Zhenhua Wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

lithium-sulfur （li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （liPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes li2S dissolution and nucleation ***,the li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： lithium sulfur batteries

Synergistic effect of bonding heterogeneity and phonon localization in introducing excellent thermoelectric properties in layered heteroanionic NdZnSbO material

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Journal of Energy Chemistry 2025年第1期100卷 259-272页

作者： Da Wan Shuwei Tang Shulin bai Xiaodong li Peng Ai Wanrong Guo Tuo Zheng College of Materials Science and Engineering Liaoning Technical University Faculty of Chemistry Northeast Normal University

Layered rare-earth metal oxides, harnessing the dual properties of oxides and two-dimensional layered materials, exhibit remarkable thermal stability and quantum confinement effects. Therefore, this work adopts the first-principles calculation combined with the Boltzmann transport theory to predict the thermoelectric properties of NdZnSbO compound. The coexistence of weak interlayer van der Waals interactions, robust intralayer ionic bonding, and partial covalent bonding leads to remarkable bonding heterogeneity, which engenders pronounced phonon scattering and imposes constraints on thermal transport along the out-of-plane direction. The weakened chemical bonds induced by the antibonding states, together with the rattling-like behavior of the Zn atom, culminate in the profound anharmonicity in the layered NdZnSbO compound. The weakening bond and heavy element contribute to the softness of phonon modes, which significantly diminishes the phonon group velocity. The redistribution-dominated four-phonon scattering process spans a large optical gap, which effectively reduces the lattice thermal conductivity. The NdZnSbO compound exhibits direct semiconductor characteristic with a bandgap of 0.73 e V by adopting the Heyd-Scuseria-Ernzerhof(HSE06) functional in combination with spin–orbit coupling(SOC) effect. The multi-valley feature of NdZnSbO compound augur favorably for band degeneracy, thus amplifying the power factor. Consequently, an optimal figure-of-merit(ZT) of 3.40 at 900 K is achieved for the n-type NdZnSbO compound. The present study delves deeply insights into the origins for the low thermal conductivity of NdZnSbO compound and proposes an optimization scheme to enhance overall thermoelectric performance.

关键词： Bond strength (chemical)

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新成果寓于新理念--《信息资源共享》书评

情报科学 2008年第1期26卷 156-160页

作者：杨九龙白君礼西北大学公共管理学院陕西西安710069 西北农林科技大学图书馆陕西杨凌712100

中山大学资讯管理系程焕文教授、潘燕桃副教授主编的《信息资源共享》,具有全新的理念、教材体系、编写方式等特点,它规范了有些概念、建立了与此教材配套的立体化网络课程,是一部优秀的教材。同时,该教材体系结构安排不尽合理,有些章... 详细信息

中山大学资讯管理系程焕文教授、潘燕桃副教授主编的《信息资源共享》,具有全新的理念、教材体系、编写方式等特点,它规范了有些概念、建立了与此教材配套的立体化网络课程,是一部优秀的教材。同时,该教材体系结构安排不尽合理,有些章节零乱、出现了争议较大的内容、个别章节概念使用混乱等,望下次修改时给予注意。

关键词：图书馆学信息资源共享书评

谷子与轮生狗尾草(2X、4X)种间的亲缘关系分析

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西北植物学报 2000年第6期20卷 954-959,T002页

作者：吴权明白君礼西北农林科技大学陕西杨陵712100

将同工酶技术与细胞遗传学相结合 ,对谷子与轮生狗尾草 (2 X、4X)野生种之间的遗传与进化关系进行了分析。分析结果表明 :谷子与轮生狗尾草四倍体类型 (4X)具有一定的同源性 ,而与轮生狗尾草二倍体类型 (2 X)的同源性较少。轮生狗尾草... 详细信息

将同工酶技术与细胞遗传学相结合 ,对谷子与轮生狗尾草 (2 X、4X)野生种之间的遗传与进化关系进行了分析。分析结果表明 :谷子与轮生狗尾草四倍体类型 (4X)具有一定的同源性 ,而与轮生狗尾草二倍体类型 (2 X)的同源性较少。轮生狗尾草四倍体类型与轮生狗尾草二倍体类型具有与谷子相近的同源性。青狗尾草 (谷子 )和轮生狗尾草二倍体类型 (2 X)是轮生狗尾草四倍体类型 (4X)最可能的两个祖先种。轮生狗尾草二倍体类型与四倍体类型尽管在形态上具有一定的相似性 ,由于生殖隔离的存在 ,将轮生狗尾草二倍体类型命名为 Setariaverticillata,轮生狗尾草四倍体类型命名为 Setaria verticiformis是正确的 ,它们分别属于两个不同的分类群。

关键词：谷子野生种同工酶细胞遗传学轮生狗尾草