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Local Environmental Dependence of Galaxy Properties in a Volume-Limited Sample of Main Galaxies

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Chinese Journal of Astronomy and Astrophysics 2007年第5期7卷 639-648页

作者： Xin-Fa Deng Ji-Zhou He Qun zhang xiao-xia Qian Peng Jiang Yong Xin School of Science Nanchang University Nanchang 330031

Using a volume-limited sample of Main Galaxies from SDSS Data Release 5, we investigate the dependence of galaxy properties on local environment. For each galaxy, a local three-dimensional density is calculated. We find that the galaxy morphological type depends strongly on the local environment; galaxies in dense environments have predominantly early type morphologies. Galaxy colors have only a weak dependence on the environment. This puts an important constraint on the process of galaxy formation.

关键词： galaxy distances and redshifts -- galaxies statistics

Sonochemical Preparation of Micro- and Nanometer Cu_2O

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Chemical Research in Chinese Universities 2008年第1期24卷 1-3页

作者： WANG Ling zhang xiao-xia YUAN Hong-ming CHEN Yan DONG Zhong-ping PANG Guang-sheng FENG Shou-hua State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Changchun 130012 P R.. China The First Geologic Survey of Jilin Province Changchun 130031 P R.China Analysis and Test Center Jilin University Chanchun 130021 P R. China

Cu2O particles with different morphologies and scales were prepared sonochemically on the solid-liquid interface of CuCl and water, by adjusting the reaction factors. The products were characterized by powder X-ray diffraction（XRD） and scanning electron microscopy（SEM）. The formation and morphology of Cu2O crystals were influenced by high-intensity ultrasound, reaction temperature, and addition of CuCl. The results indicate that micrometer Cu2O was crystallized in cubic and octahedral shapes, whereas, nanometer Cu2O was not produced in well-shaped crystals.

关键词： Cu2O Ultrasound Morphology CuCl

Overexpression of the Suaeda salsa SsNHX1 gene confers enhanced salt and drought tolerance to transgenic Zea mays

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Journal of Integrative Agriculture 2018年第12期17卷 2612-2623页

作者： HUANG Ying zhang xiao-xia LI Yi-hong DING Jian-zhou DU Han-mei ZHAO Zhuo ZHOU Li-na LIU Chan GAO Shi-bin CAO Mo-ju LU Yan-li zhang Su-zhi Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region Ministry of Agriculture/Maize Research Institute Sichuan Agricultural University

Maize is one of the most important crops worldwide, but it suffers from salt stress when grown in saline-alkaline soil. There is therefore an urgent need to improve maize salt tolerance and crop yield. In this study, the SsNHX1 gene of Suaeda salsa, which encodes a vacuolar membrane Na~+/H~+ antiporter, was transformed into the maize inbred line 18-599 by Agrobacterium-mediated transformation. Transgenic maize plants overexpressing the SsNHX1 gene showed less growth retardation when treated with an increasing NaCl gradient of up to 1%, indicating enhanced salt tolerance. The improved salt tolerance of transgenic plants was also demonstrated by a significantly elevated seed germination rate(79%) and a reduction in seminal root length inhibition. Moreover, transgenic plants under salt stress exhibited less physiological damage. SsNHX1-overexpressing transgenic maize accumulated more Na~+ and K~+ than wild-type(WT) plants particularly in the leaves, resulting in a higher ratio of K~+/Na~+ in the leaves under salt stress. This result revealed that the improved salt tolerance of SsNHX1-overexpressing transgenic maize plants was likely attributed to SsNHX1-mediated localization of Na~+ to vacuoles and subsequent maintenance of the cytosolic ionic balance. In addition, SsNHX1 overexpression also improved the drought tolerance of the transgenic maize plants, as rehydrated transgenic plants were restored to normal growth while WT plants did not grow normally after dehydration treatment. Therefore, based on our engineering approach, SsNHX1 represents a promising candidate gene for improving the salt and drought tolerance of maize and other crops.

关键词： Na^+/H^+ antiporter salt stress K^+/Na^+ drought stress gene transformation

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美国生物药立法指南实施进展与绩效评价研究

中国新药杂志 2018年第24期27卷 2861-2868页

作者：张晓侠苏州智核生物医药科技有限公司医学开发部苏州215125

美国政府对医疗保健的支出总费用逐年攀升且居高不下。美国市场畅销药中生物药占比越来越高,大部分畅销的生物药价格每年均在上涨,最高年增长率为36%。这些生物药的美国专利多在2016—2020年到期,且均已超过数据独占期。《生物药价格竞... 详细信息

美国政府对医疗保健的支出总费用逐年攀升且居高不下。美国市场畅销药中生物药占比越来越高,大部分畅销的生物药价格每年均在上涨,最高年增长率为36%。这些生物药的美国专利多在2016—2020年到期,且均已超过数据独占期。《生物药价格竞争和创新法案》开启了美国生物类似药研发政策大门,BsUFA I绩效达成,完成了生物类似药批准从0到1的跨越。截止2017年FDA已批准生物类似药9个,无重大修订或重新提交的情况下,审核时限均未超过10个月,完全符合已制定BsUFA I绩效目标。本文对美国生物类似药研发的背景、法规指南的制定以及生物类似药用户付费法案(Biosimilar User Fee Act,BsUFA)的执行等进行了综述,以期对我国生物类似药发展提供一定借鉴和参考。

关键词：生物类似药指南参比制剂紫皮书可互换性

Potential dependence in electrocatalysis: a theoretical perspective

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Science China Chemistry 2025年第1期68卷 21-25页

作者： Leyu Liu Zhaoming xia Zeyu Wang Yinjuan Chen Hai xiao Department of Chemistry Tsinghua University Fundamental Science Center of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University

Electrocatalysis is a key technology for the new energy era and sustainable development, serving as the interface for interconversion of electrical and chemical energies, which spans a wide spectrum of applications in sustainable energy and environmental engineering. Electrocatalytic reactions including electrochemical CO2reduction reaction （eCO2RR）, hydrogen evolution reaction （HER）, and oxygen evolution/reduction reactions （OER/ORR）, hold essential promise for renewable energy technologies as well as complement the biogeochemical carbon and oxygen cycles.

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Diurnal changes in net photosynthetic rate of Pueraria lobataand its impact factors

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Forestry Studies in China 2011年第1期13卷 57-63页

作者： DING You-fang WANG Cai-yun Neo C MOKGOLODI zhang xiao-xia SHI Ling-ling zhang Yun-wei YANG Fu-yu LIU Yu-jun College of Biological Sciences and Biotechnology National Engineering Laboratory for Tree Breeding Beijing Forestry University Beijing 100083 P. R. China College of Animal Sciences and Technology China Agricultural University Beijing 100193 P. R. China

In order to identify the relationship between diurnal changes in the net photosynthetic rate（Pn） of Pueraria lobata and environmental factors,diurnal changes in the Pn of leaves of two *** cultivars were measured using a CIRAS-1 portable photosynthesis measurement system（PP-Systems,UK）.The results show that diurnal changes in Pn of both cultivars could be interpreted as double-peak curves,indicating the occurrence of an obvious midday *** analyses indicate that the correlation between Pn and stomatal conductance was positive and extremely significant（p 〈 0.01）.The correlations of Pn with intercellular CO2 concentration and transpiration rate were positive and significant（p 〈 0.05）,while the correlations of Pn with air and leaf temperatures were negative and significant（p 〈 0.05）.The results indicate that among the factors affecting photosynthetic properties,some can be grouped as stomatal limitations while others are non-stomatal limitations.

关键词： Pueraria lobata net photosynthetic rate (Pn) diumal change environmental factors

Neuregulin-1 attenuates mitochondrial dysfunction in a rat model of heart failure

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Chinese Medical Journal 2012年第5期125卷 807-814页

作者： GUO Yong-fang zhang xiao-xia LIU Yong DUAN Hong-yan JIE Bing-zhang WU Xue-si Department of Cardiology Beijing Anzhen Hospital CapitalMedical University Beijing 100029 China Laboratory of Apoptosis and Cancer Biology National KeyLaboratory of Biomembrane and Membrane BiotechnologyInstitute of Zoology Chinese Academy of Sciences Beijing100101 China

Background Mitochondrial dysfunction plays a pivotal role in the progression of left ventricular （LV） remodeling and heart failure （HF）. Recombinant human neuregulin-1 （rhNRG-1） improves cardiac function in models of experimental HF and in clinical trials; however, its impact on mitochondrial function during chronic HF remains largely unknown. The purpose of this study was to investigate whether rhNRG-1 could attenuate the functional and structural changes that occur in cardiac mitochondria in a rat model of HF induced by myocardial infarction.

关键词： neuregulin-1 heart failure mitochondria cardioprotection

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消防法律制度的调整与完善

消防科学与技术 2015年第7期34卷 961-963页

作者：张小霞中国人民公安大学北京100038

针对新形势下我国现行消防法律制度在实际运行过程中面临的新的问题与挑战,通过分析消防法律法规在行政执法实践过程中反映出来的问题,探讨如何通过调整与完善让消防法律制度更好地适应新时期消防管理工作的需要。

关键词：消防法消防安全消防执法

论路德对自然科学的态度:以哥白尼的日心说为焦点

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自然辩证法研究 2020年第6期36卷 87-92页

作者：张晓霞温州大学教育学院温州325035

基于路德关于哥白尼的一段桌边谈话,路德长期受到科学史家的广泛批评,本文表明这些批评其实并不可靠。首先,路德的桌边谈话具有随意性。其次,路德的桌边谈话直到其去世二十年之后,即1566年才编辑出版,因此很难说那次谈话会阻碍哥白尼学... 详细信息

基于路德关于哥白尼的一段桌边谈话,路德长期受到科学史家的广泛批评,本文表明这些批评其实并不可靠。首先,路德的桌边谈话具有随意性。其次,路德的桌边谈话直到其去世二十年之后,即1566年才编辑出版,因此很难说那次谈话会阻碍哥白尼学说的传播。最后,我们不应该脱离路德自己更为严谨的论著,而仅仅从一段随意的桌边谈话把握其真正思想。路德自己的论著表明他把包括天文学和神学等不同的学科看作拥有各自技术语言的独立学科。

关键词：路德哥白尼日心说