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Functions of VEGF in female reproductive system

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Chinese Science Bulletin 2003年第3期48卷 217-222页

作者： QIANDong zhucheng StateKeyLaboratoryofReproductiveBiology InstituteofZoologyChineseAcademyofSciencesBeijing100080China StateKeyLaboratoryofReproductiveBiology InstituteofZoologyChineseAcademyofSciencesBeijing10008

As a homodimeric glycoprotein, vascular en- dothelial growth factor (VEGF) is a highly specific mitogen of vascular endothelial cells. It can induce proliferation and migration, and inhibit apoptosis of endothelial cell. VEGF is involved in many processes in the female reproductive sys-tem, such as ovulation, periodical changes of endometrium, embryo implantation and development. VEGF plays impor-tant roles in some reproductive diseases, including pree-clampsia and fetal hypoevolutism in uterus. Based on our studies on angiogenesis and its relevant factors in the female reproductive system these years, the functions of VEGF in female reproductive system are reviewed, and the research prospect and application of VEGF are also discussed.

关键词： VEGF 血管内皮生长因子受体雌性生殖系统生物学作用血管生成生殖医学

ENVIRONMENTAL CHANGE AND ITS IMPACTS ON HUMAN SETTLEMENT IN THE CHANGJIANG RIVER DELTA IN NEOLITHIC AGE

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Chinese Geographical Science 2004年第3期14卷 239-244页

作者： ZHANGQiang LIUChun-ling zhucheng JIANGTong NanjinglnstituteofGeographyandLimnology ChineseAcademyofSciencesNanjing210008P.R.China DepartmentofUrbanandResourcesSciences NanjingUniversityNanjing210093P.R.China

Dating data, altitude of Neolithic sites, climatic changes from sedimentary records and previous research results were collected and analyzed to detect possible connections between climatic changes and human activities in the Changjiang River Delta in the Neolithic Age. The results indicated that hydrological changes greatly impacted the human activities in the study region. Low-lying geomorphology made the floods and sea level changes become the important factors affecting human activities, especially the altitude change of human settlements. People usually moved to higher places during the periods characterized by high sea level and frequent floods to escape the negative influences from water body expansion, which resulted in cultural hiatus in certain profiles. However, some higher-altitude settlements were not the results of climatic changes but the results of social factors, such as religious ceremony and social status. Therefore, further research will be necessary for the degree and types of impacts of climatic changes on human activities in the study area at that time.

关键词： Changjiang River Delta Neolithic Age human activities climatic events

Golden insights from a silver superatom

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National Science Review 2024年第8期11卷 54-55页

作者： zhucheng Yang Jianping Xie Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Department of Chemical and Biomolecular Engineering National University of Singapore

Silver and gold, both members of the coinage group, have contrasting properties despite their similar atomic sizes and structures. Historically, humanity has been captivated by these metals’ unique attributes. In past decades, scientists have delved into their fundamental differences at the nanoscale, where atomically precise Ag and Au clusters play significant roles.

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Measuring orbital angular momentum of vortex beams in optomechanics

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Frontiers of physics 2021年第3期16卷 177-183页

作者： zhucheng Zhang Jiancheng Pei Yi-Ping Wang Xiaoguang Wang Zhejiang Institute of Modern Physics Department of PhysicsZhejiang UniversityHangzhou310027China College of Science Northwest A&F UniversityYangling712100China Graduate School of China Academy of Engineering Physics Beijing100193China

Measuring the orbital angular momentum(OAM)of vortex beams,including the magnitude and the sign,has great application prospects due to its theoretically unbounded and orthogonal ***,the sign-distinguishable OAM measurement in optomechanics is proposed,which is achieved by monitoring the shift of the transmission spectrum of the probe field in a double Laguerre-Gaussian(LG)rotational-cavity *** with the traditional single LG rotational cavity,an asymmetric optomechanically induced transparency window can occur in our ***,the position of the resonance valley has a strong correlation with the magnitude and sign of *** originally comes from the fact that the effective detuning of the cavity mode from the driving field can vary with the magnitude and sign of OAM,which causes the spectral shift to be directional for different signs of *** scheme solves the shortcoming of the inability to distinguish the sign of OAM in optomechanics,and works well for high-order vortex beams with topological charge value±45,which is a significant improvement for measuring OAM based on the cavity optomechanical system.

关键词： orbital angular momentum optomechanically induced transparency Laguerre-Gaussian rotational-cavity system optomechanics

On the Holocene sea-level highstand along the Yangtze Delta and Ningshao Plain,East China

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Chinese Science Bulletin 2003年第24期48卷 2672-2683页

作者： zhucheng ZHENGChaogui MAChunmei YANGXiaoxuan GAOXizhen WANGHaiming SHAOJiuhua DepartmentofUrbanandResourcesSciencesofNanjingUniversity Nanjing210093China DepartmentofChuzhouNormalCollege Chuzhou239012China ZhejiangInstituteofCulturalRelicsandArchaeology Hangzhou310014China HemuduSiteMuseumofZhejiang Yuyao315400China

The temporal-spatial distribution of Neolithicsites shows a long period of absence of human settlementsduring the early Holocene on the Yangtze Delta, and the area has not been colonized until 7000 aBP, corresponding to the onset of the Majiabang culture. Besides the regions east to the sandbar of Maqiao Site in Shanghai, foraminifera are not found in Neolithic cultural layers since 7000 aBP, indicating a widespread transgression between 10000 and 7000 *** of radiocarbon-dated cultural relics, foraminifera and pollen records from the Hemudu Site suggests that the Hemudu culture emerged and developed during themid-Holocene Climatic Optimum. Therefore, the hypothesisof a mid-Holocene sea-level highstand along the YangtzeDelta and Ningshao Plain from 7000 to 5000 aBP is an open debate. New evidence from archaeological excavations andbio-stratigraphy suggests that, prior to 7000 aBP, a high sea level occurred along the Ningshao Plain. Subsequently, the sea level was lowered between 7000 and 5000 aBP, and the area suffered from frequent floods from 5000 to 3900 aBP.

关键词：全新统长江三角洲中国东部地区海平面

SELECTIVE RECOVERY OF SILVER FROM AN ACIDIC SOLUTION BY CEMENTATION WITH COPPER

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Journal of Central South University 1998年第2期10卷 40-43页

作者： Yongbin Yang Tao Jiang Ganghua Fu Boquan He zhucheng Huang 1. Department of Mineral Engineering Central South University of Technology 410083 Changsha China

An acidic solution containing 280 mg/l silver and others was treated. In order to selectively recover silver without losing other metallic elements from the solution, cementation was adopted with metallic copper. The kinetics of cementation reaction and copper dissolution and mechanism of copper consumption were studied. The results indicated that the rate of cementation reaction and copper consumption were markedly increased with the increase of temperature. For the same cementation recovery of silver , copper consumption at elevated temperature was much higher than that at ambient temperature . Cementation rate and copper consumption rate also increased with the increase of stirring velocity, while copper consumption at different stirring velocity for the same recovery of silver was almost not different. Studies on the chemical mechanism of copper consumption showed that Fe 3+ and residual leaching additive RH in the solution were the main factors that caused extra copper consumption in acidic solutions.

关键词： extraction cementation silver

A multiple sensitive attributes data publishing method with guaranteed information utility

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CAAI Transactions on Intelligence Technology 2023年第2期8卷 288-296页

作者： Haibin Zhu Tong Yi Songtao Shang Minyong Shi zhucheng Li Wenqian Shang Department of Computer Science and Mathematics Nipissing UniversityNorth BayOntarioCanada Key Lab of Education Blockchain and Intelligent Technology Ministry of EducationGuangxi Normal UniversityGuilinChina Guangxi Key Lab of Multi‐Source Information Mining and Security Guangxi Normal UniversityGuilinChina School of Computer and Communication Engineering Zhengzhou University of Light IndustryZhengzhouChina School of Computer Science Communication University of ChinaBeijingChina Business College Beijing Union UniversityBeijingChina

Data publishing methods can provide available information for analysis while preserving *** multiple sensitive attributes data publishing,which preserves the relationship between sensitive attributes,may keep many records from being grouped and bring in a high record suppression *** category of multiple sensitive attributes data publishing,which reduces the possibility of record suppression by breaking the relationship between sensitive attributes,cannot provide the sensitive attributes association for ***,the existing multiple sensitive attributes data publishing fails to fully account for the comprehensive information *** acquire a guaranteed information utility,this article defines comprehensive information loss that considers both the suppression of records and the relationship between sensitive attributes.A heuristic method is leveraged to discover the optimal anonymity scheme that has the lowest comprehensive information *** experimental results verify the practice of the proposed data publishing method with multiple sensitive *** proposed method can guarantee information utility when compared with previous ones.

关键词： data analysis data privacy security of data

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山东诸城市六吉庄子新石器时代遗址调查

华夏考古 2007年第2期 3-9,17页

作者：兰玉富张建许姗山东省文物考古研究所山东济南市250012 诸城市博物馆山东诸城市262200

2001年,山东省文物考古研究所和诸城市博物馆等单位对该遗址进行了考古调查和勘探。发现房址和灰坑等遗迹,采集或征集到陶釜、盆、钵,石斧、磨盘、磨棒等遗物。陶器绝大部分为夹砂红褐陶,不见泥质陶。该遗址的发现,有助于鲁东南地区考... 详细信息

2001年,山东省文物考古研究所和诸城市博物馆等单位对该遗址进行了考古调查和勘探。发现房址和灰坑等遗迹,采集或征集到陶釜、盆、钵,石斧、磨盘、磨棒等遗物。陶器绝大部分为夹砂红褐陶,不见泥质陶。该遗址的发现,有助于鲁东南地区考古学文化谱系的完善和后李文化的深入研究。

关键词：六吉庄子遗址考古调查后李文化

Molecular Interactions in Atomically Precise Metal Nanoclusters

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Precision Chemistry 2024年第10期2卷 495-517页

作者： Jing Qian zhucheng Yang Jingkuan Lyu Qiaofeng Yao Jianping Xie Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou 350207P.R.China Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore Key Laboratory of Organic Integrated Circuits Ministry of Education&Tianjin Key Laboratory of Molecular Optoelectronic SciencesDepartment of ChemistrySchool of ScienceTianjin UniversityTianjin 300072P.R.China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072P.R.China

For nanochemistry, precise manipulation of nanoscalestructures and the accompanying chemical properties atatomic precision is one of the greatest challenges today. Thescientific community strives to develop and design customizednanomaterials, while molecular interactions often serve as key toolsor probes for this atomically precise undertaking. In thisPerspective, metal nanoclusters, especially gold nanoclusters,serve as a good platform for understanding such nanoscaleinteractions. These nanoclusters often have a core size of about 2nm, a defined number of core metal atoms, and protecting ligandswith known crystal structure. The atomically precise structure ofmetal nanoclusters allows us to discuss how the molecularinteractions facilitate the systematic modification and functionalization of nanoclusters from their inner core, through the ligandshell, to the external assembly. Interestingly, the atomic packing structure of the nanocluster core can be affected by forces on thesurface. After discussing the core structure, we examine various atomic-level strategies to enhance their photoluminescent quantumyield and improve nanoclusters’ catalytic performance. Beyond the single cluster level, various attractive or repulsive molecularinteractions have been employed to engineer the self-assembly behavior and thus packing morphology of metal nanoclusters. Themethodological and fundamental insights systemized in this review should be useful for customizing the cluster structure andassembly patterns at the atomic level.

关键词： gold catalysis conformational analysis nanotechnology noncovalent interactions stereochemistry luminescence