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Drought decreases the positive impact of warming on an alpine grassland community

Science China Earth Sciences 2024年第10期67卷 3226-3238页

作者： Wang A Wangwang lv Yang ZHOU Bowen LI Jianping SUN jingya lv Lanying CHEN Dorji TSECHEO Shiping WANG Key Laboratory of Tibetan Plateau Earth Resources and Environment Institute of Tibetan Plateau Research Chinese Academy of Sciences University of the Chinese Academy of Sciences School of Ecology and Environment Tibet University

Temperature and precipitation are the main factors determining plant community succession and aboveground net primary productivity(ANPP) in natural grasslands. However, most climate manipulative experiments have mainly focused on their impacts in isolation, especially in alpine regions. Here we explored the relative effects and interaction of warming and precipitation alteration on succession and ANPP using a 7-year experiment involving warming with precipitation alteration(increase(IP) or decrease(DP) in precipitation relative to ambient precipitation(AP)) on the Tibetan Plateau. Our results showed that warming and warm-wet conditions increased species richness, diversity index, height and cover of overall ***, decreasing precipitation reduced them, but increased S. purpurea and the rate of change in community composition. Importantly, warming mitigated the impacts of decreased precipitation on plant community composition, and the interactive effects of warming and altered precipitation on cover, height and plant ANPP varied with year and plant ***, warming increased community ANPP through increases in forb ANPP or non-dominant species ANPP and biodiversity regardless of change in precipitation. However, decreased precipitation reduced community ANPP via decreases in the ANPP of sedges and forbs and biodiversity. Precipitation alteration affected the relationship between biodiversity and community ANPP regardless of warming(IP更多还原AbstractFilter('ChDivSummary', 'ChDivSummaryMore', 'ChDivSummaryReset');

关键词： Alpine grassland Climate warming Precipitation alteration Community composition Biodiversity Above-ground net primary productivity

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Co-culture of astrocytes with neurons from injured brain A time-dependent dichotomy

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Neural Regeneration Research 2011年第35期6卷 2768-2772页

作者： Xiaojing Xu Min Wang Jing Liu jingya lv Yanan Hu Huanxiang Zhang Department of Cell Biology Medical College of Soochow University Jiangsu Provincial Key Laboratory of Stem Cell Research Suzhou 215123 Jiangsu Province China

As supportive cells for neuronal growth and development, much effort has been devoted to the role of astrocytes in the normal state. However, the effect of the astrocytes after injury remains elusive. In the present study, neurons isolated from the subventricular zone of injured neonatal rat brains were co-cultured with astrocytes. After 6 days, these astrocytes showed a mature neuron-like appearance and the number of surviving neurons, primary dendrites and total branches was significantly higher than those at 3 days. The neurons began to shrink at 9 days after co-culture with shorter and thinner processes and the number of primary dendrites and total branches was significantly reduced. These experimental findings indicate that astrocytes in the injured brain promote the development of neurons in the early stages of co-culture while these cells reversely inhibit neuronal growth and development at the later states.

关键词： injured brain astrocytes neurons neural plasticity neurogenesis neural regeneration

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Bird specimen number linked with species trait and climate niche breadth

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Avian Research 2024年第1期15卷 108-115页

作者： Xiaoyu Duan Xiongwei Huang jingya Zhang Shuo lv Gang Song Yanping Wang Gang Feng Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau&Inner Mongolia Key Laboratory of Grassland Ecology School of Ecology and EnvironmentInner Mongolia UniversityHohhot010020China Key Laboratory of Marine Biotechnology of Fujian Province Institute of OceanologyCollege of Marine SciencesFujian Agriculture and Forestry UniversityFuzhou350002China Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing100101China Laboratory of Island Biogeography and Conservation Biology College of Life SciencesNanjing Normal UniversityNanjing210023China

Biological specimens are fundamental for taxonomy and flora/fauna *** importantly,they also play crucial roles in recording environmental impacts on morphology and behavior,which is vital for biodiversity research and ***,there are few systematic studies on the patterns and drivers of bird specimen number at regional *** study is the first attempt to examine the relationships between bird specimen number and species traits as well as climate niche breadth in China,aiming to answer two questions:1)how do species’temperature niche breadth and precipitation niche breadth influence specimen number?2)which trait is most associated with bird specimen number?The associations between bird specimen number and explanatory variables were examined using ordinary least squares,generalized linear models,phylogenetic generalized linear mixed models,and multiple *** results showed that Muscicapidae was the family with the highest specimen number,and Passeriformes was the order with the highest specimen *** specimen number significantly increased with larger temperature niche breadth and precipitation niche *** number was also positively associated with geographic range size,habitat specificity,hunting vulnerability and clutch size,but negatively associated with body *** findings suggest that future bird specimen collection should pay more attention to birds with limited ecological niches,large body sizes,and small clutch *** research enhances the use of bird specimen data to study and preserve biodiversity.

关键词： Biodiversity conservation Biological specimens Bird traits Scientific collection Specimen number Temperature and precipitation

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Er:YAG激光对牙釉质与IPS *** Press铸瓷间抗剪切强度的影响

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应用激光 2016年第6期36卷 764-768页

作者：吕静雅蔡兴伟杨永进马龙锦州医科大学火箭军总医院培养基地北京100088 中国人民解放军火箭军总医院口腔科北京100088

目的:比较Er:YAG激光和磷酸分别处理后的牙釉质与IPS *** Press铸瓷间的粘接效果。方法:36颗人类上颌前磨牙随机分为3组,第1组:37%磷酸处理;第2组:Er:YAG激光(120mJ/10HZ)处理;第3组:Er:YAG激光刻蚀后磷酸酸蚀。应用扫描电子显微镜显示... 详细信息

目的:比较Er:YAG激光和磷酸分别处理后的牙釉质与IPS *** Press铸瓷间的粘接效果。方法:36颗人类上颌前磨牙随机分为3组,第1组:37%磷酸处理;第2组:Er:YAG激光(120mJ/10HZ)处理;第3组:Er:YAG激光刻蚀后磷酸酸蚀。应用扫描电子显微镜显示分析各组处理后的牙釉质形态变化,并使用万能力学测试机记录抗剪切强度值。结果:37%磷酸处理组抗剪切强度值最高(25.92±0.97 MPa),与Er:YAG激光单独处理组差异无统计学意义(P>0.05),激光与磷酸联合组呈现最低值(17.53±0.79 MPa),与其他组相比差异皆有统计学意义(P<0.05)。结论:Er:YAG激光单独处理的牙釉质与IPS *** Press铸瓷间粘接效果同磷酸酸蚀方法相似,在粘结铸瓷前代替传统酸蚀处理牙釉质方面是有潜力的。

关键词： Er:YAG激光牙釉质瓷贴面抗剪切强度

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侵袭性真菌性肺炎MSCT影像特征及与IL⁃17、IL⁃23相关性

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中华肺部疾病杂志（电子版） 2022年第6期15卷 835-837页

作者：吴娇艳鹿静雅符萌刘影中国科学技术大学第一附属医院安徽省立医院影像科合肥230000 中国科学技术大学第一附属医院安徽省立医院呼吸与危重症医学科合肥230000

目的分析侵袭性肺部真菌感染(IPFI)、多层螺旋CT(MSCT)影像特征及与血清白细胞介素⁃17(IL⁃17)、白细胞介素⁃23(IL⁃23)相关性。方法选择2019年1月至2021年10月我院收治的确诊侵袭性真菌性肺炎患者56例,观察MSCT影像特点,测定分析患者血清... 详细信息

目的分析侵袭性肺部真菌感染(IPFI)、多层螺旋CT(MSCT)影像特征及与血清白细胞介素⁃17(IL⁃17)、白细胞介素⁃23(IL⁃23)相关性。方法选择2019年1月至2021年10月我院收治的确诊侵袭性真菌性肺炎患者56例,观察MSCT影像特点,测定分析患者血清IL⁃17、IL⁃23与侵袭性真菌性肺炎影像表现的相关性。结果IPFI患者真菌培养率100.0%,其中白假丝酵母菌41.1%、隐球菌25.0%、曲霉菌12.5%、热带假丝酵母10.7%、克柔假丝酵母7.1%、光滑假丝酵母3.5%。IPFI主要MSCT征象结节或团块型、实变型、弥漫型、曲菌球型和混合型检出率分别为48.2%,30.4%,12.5%,5.4%和3.5%。病灶分布呈多肺段改变,双肺分布多于单肺,病灶多位中下肺野外带、胸膜下。结节或团块型IPFI患者血清IL⁃17(67.26±17.72)ng/L、IL⁃23(868.36±53.93)ng/L高于实变型IL⁃17(52.15±12.47)ng/L、IL⁃23(627.26±36.83)ng/L和弥漫型IL⁃17(44.68±10.24)ng/L、IL⁃23(562.10±32.47)ng/L(P<0.05)。结论IPFI联合MSCT表现和血清IL⁃17、IL⁃23在分析肺部病灶表现、推测致病菌类型和发病机制上有临床意义。

关键词：侵袭性肺部真菌感染多层螺旋CT 白细胞介素⁃17 白细胞介素⁃23

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饲料级硫酸铜中二噁英类多氯联苯的污染特征及其来源研究

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环境科学学报 2020年第4期40卷 1500-1506页

作者：吕静雅王璞赵文博许世爱高仁富李英明张庆华中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室北京100085 中国科学院大学资源与环境学院北京100049 江汉大学环境与健康研究院武汉430056 国民核生化灾害防护国家重点实验室北京102205 深圳市宝安东江环保技术有限公司深圳518104 深圳市东江饲料添加剂有限公司深圳518104

近年来,持久性有机污染物(POPs)对人体和环境带来的危害在世界范围内引起了广泛关注.饲料添加剂已成为畜禽动物养殖过程中必不可少的原料,为探明典型动物饲料添加剂饲料级硫酸铜(CuSO4)中POPs的来源,本研究分析了饲料级CuSO4、铜盐产品... 详细信息

近年来,持久性有机污染物(POPs)对人体和环境带来的危害在世界范围内引起了广泛关注.饲料添加剂已成为畜禽动物养殖过程中必不可少的原料,为探明典型动物饲料添加剂饲料级硫酸铜(CuSO4)中POPs的来源,本研究分析了饲料级CuSO4、铜盐产品、蚀刻废液(包括酸性蚀刻废液、碱性蚀刻废液及微蚀废液)、蚀刻液(包括盐酸(HCl)和氧化剂)、硫酸(H2SO4)共计79个样品中二噁英类多氯联苯(DL-PCBs)的污染特征.结果发现,饲料级CuSO4和铜盐产品中DL-PCBs均以PCB-77、PCB-169和PCB-126为主要检出单体,与其生产原料酸性蚀刻废液中具有完全一致的指纹分布特征,表明其来源的一致性;对于蚀刻液,DL-PCBs仅在工业HCl中有不同程度检出,然而指纹特征(单体组成以PCB-118、PCB-77和PCB-126为主)与其他样品中有所区别.通过主成分分析(PCA)进一步确认表明,工业HCl是蚀刻废液中DL-PCBs的一个重要来源,但亦可能存在其他未知来源.相关研究为去除和控制微量元素饲料添加剂尤其是铜盐产品中DL-PCBs提供了重要的科学依据.

关键词：二噁英类多氯联苯饲料级硫酸铜铜盐产品污染特征来源

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Lipid analysis of three special nervonic acid resources in China

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Oil Crop Science 2020年第4期5卷 180-186页

作者： Xinghao Tu jingya Wan Ya Xie Fang Wei Siewyoung Quek Xin lv Liqing Du Hong Chen Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences Key Laboratory of Oilseeds Processing of Ministry of Agriculture and Rural AffairsKey Laboratory of Biology and Genetic Improvement of Oil Crops of Ministry of Agriculture and Rural AffairsHubei Key Laboratory of Lipid Chemistry and NutritionWuhanChina South Subtropical Crop Research Institute Chinese Academy of Tropical Agricultural Science/Key Laboratory of Tropical Fruit BiologyMinistry of Agriculture and Rural AffairsZhanjiangChina Faculty of Life Science Hubei UniversityWuhanChina School of Chemical Sciences University of AucklandAuckland1142New Zealand

Nervonic acid plays an important role in nutrition and function of the human *** oleifera,Acer truncatum and Xanthoceras sorbifolium are China’s unique woody plant rich in nervonic acid in seed *** study aims to investigate the lipid composition of these 3 special *** fatty acids were detected by gas chromatography coupled with flame detector(GC-FID).Triglycerides(TAGs)and phospholipids(PLs)were detected by shotgun-mass spectrometry(shotgun-MS).Results showed that *** oil presented the highest level of nervonic acid(46.20±0.22%)among the 3 *** oil of *** and *** had 3.53±0.20%and 1.83±0.21%nervonic acid respectively.53 species of TAGs and 15 species of PLs were identified in *** oil,with PLs content of 499.94±22.34μg/*** *** oil,PL and TAG species were twice more than those in *** oil,and its’content of PLs was 76.27±3.21μg/*** *** oil,75 TAGs and 34 PLs were detected,with the lowest PLs at 23.84±0.17μg/*** results demonstrated that these 3 vegetable oils have great potential to become nervonic acid supplements for human health.

关键词： Nervonic acid Malania oleifera Acer truncatum Xanthoceras sorbifolium Lipid analysis

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Diterpenoid UDP-Glycosyltransferases from Chinese Sweet Tea and Ashitaba Complete the Biosynthesis of Rubusoside

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Molecular Plant 2018年第10期11卷 1308-1311页

作者： Yuwei Sun Zhuo Chen Jianxu Li Jianhua Li Huajun lv jingya Yang Weiwei Li Dingan Xie Zhiqiang Xiong Peng Zhang Yong Wang CAS-Key Laboratory of Synthetic Biology CAS Center for Excellence in Molecular Plant Sciences Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 China National Key Laboratory of Plant Molecular Genetics CAS Center forExcellence in Molecular Plant Sciences Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 China University of Chinese Academy of Sciences Beijing 100039 China College of Food Science and Technology Shanghai Ocean University Shanghai 201306 China

Dear Editor,Diterpenoids are important molecules that play significant roles in many biological processes. In plants, acyclic diterpene phytol is a representative side chain of chlorophyll, and tetracyclic diterpene gibberellins ubiquitously serve as plant hormones regulating growth and development. Decoration of diterpene core struc-tures by oxidation and glycosylation are usually key steps to confer final bioactivity of diterpenoid compounds. In contrast to the extensively studied oxidases involved in gibberellin biosyn- thesis, diterpenoid-related glycosyltransferases have been scarcely documented, possibly due to the relative rarity of diter- pene glycosides in the plant kingdom. Only a few UDP-dependent glycosyltransferases （UGTs） have been characterized to participate in diterpene glycoside biosynthesis （Richman et al., 2005; Nagatoshi et al., 2012）.

关键词： PLANT METABOLISM GLYCOSIDES CHINGII

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A Review on the Supply-Demand Relationship and Spatial Flows of Ecosystem Services

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Journal of Resources and Ecology 2022年第5期13卷 925-935页

作者： HUANG Mengdong XIAO Yu XU Jie LIU jingya WANG Yangyang GAN Shuang lv Shixuan XIE Gaodi Institute of Geographic Sciences and Natural Resources Research Chinese Academy of ScienceBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China College of Geography and Environment Shandong Normal UniversityJinan 250358China

Research on spatial flow as it relates to the relationship between the supply and demand of ecosystem services supports a significant connection between the supply of ecosystem services and human *** the entire process of the production and flow,as well as the use of ecosystem services,accurately assessing the balance of supply and demand of ecosystem services,and establishing a two-way feedback relationship between supply and demand are vital for the scientific management of the ecosystem and ensuring the sustainable development of regional *** on a large number of relevant publications,this paper comprehensively summarizes the concepts and assessment methods of ecosystem service supply and demand from the perspective of ecosystem service supply and demand,and discusses the impacts of land use and climate change on the temporal and spatial changes of ecosystem services under the background of global ***,an analysis of the research progress in the ecosystem services spatial flow indicated that there are still deficiencies in the quantification of cultural services,the dynamics of ecosystem service flow and the driving mechanism of ecosystem *** also propose that clarifying the driving mechanism and transfer process of ecosystem services,and realizing the mutual conversion between different spatial-temporal scales of ecosystem services,is an important approach for improving the application of ecosystem services research in practice in the future.

关键词： ecosystem services supply-demand relationship spatial flow value assessment driving factors

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基于BP网络的智能压力传感器系统研究与设计

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传感技术学报 2011年第10期24卷 1426-1430页

作者：崔静雅吕惠民程赛西安理工大学应用物理系西安710048

将STM32F101C8微处理器与μC/OS-Ⅱ操作系统相结合,设计出了一种高精度智能传感器系统,给出了相应的硬件结构和软件设计。利用BP神经网络对压力和温度两个目标参量进行数据融合处理,减小了两者相互交叉干扰敏感度。实测结果显示该传感... 详细信息

将STM32F101C8微处理器与μC/OS-Ⅱ操作系统相结合,设计出了一种高精度智能传感器系统,给出了相应的硬件结构和软件设计。利用BP神经网络对压力和温度两个目标参量进行数据融合处理,减小了两者相互交叉干扰敏感度。实测结果显示该传感器能满足多任务下的实时性要求,并具有更加精确、稳定、可靠的性能。

关键词：压力传感器 BP神经网络 μC/OS-Ⅱ STM32F101C8

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