Results 41 to 50 of about 7,302 (122)
Shuitu Baochi Xuebao, 2022 以古尔班通古特沙漠西南缘荒漠—绿洲过渡带的多枝柽柳(Tamarix ramosissima)和白梭梭(Haloxylon persicum)为研究对象,通过分析植物木质部水与各潜在水源的δ18O值,结合MixSIAR模型,解析不同群落中多枝柽柳和白梭梭的水分来源及对各水源的利用比例。结果表明:(1)多枝柽柳和白梭梭灌丛下0—60 cm土层土壤δ18O值变化幅度较大,随土层深度的增加δ18O值趋于稳定,说明表层土壤受外界环境影响较大。(2)在多枝柽柳和白梭梭共生群落中,多枝柽柳在整个生长季主要利用300 ...
祖姆热提·于苏甫江 +5 more
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Zhejiang Daxue xuebao. Lixue ban, 2005 研究用分阶段共培养法进行体外扩增的脐血造血干/祖细胞对NOD/SCID小鼠重建造血功能的作用，探讨新扩增技术体系对将来临床移植的可行性.分离脐血单个核细胞，分别用rhSCF+rhG-CSF+rhMDGF组合（非共培养组合）和rhSCF+rhG-CSF+rhMDGF+人骨髓间充质干细胞组合（共培养组合）进行脐血造血干/祖细胞的体外扩增，并对扩增细胞进行流式细胞术和细胞集落形成能力分析.在移植实验中，将经致死剂量射线照射后的NOD/SCID小鼠随机分为3组，每组10只.A组：每只移植8.5 ...
WANGJin-fu(王金福) +3 more
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Impact of race‐based customization on detection of fetal growth restriction
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 4, Page 480-485, October 2025.ABSTRACT Objective Fetal growth standards determine which fetuses are diagnosed with fetal growth restriction (FGR) and become candidates for enhanced fetal monitoring. Given the existence of race‐based differences in fetal and neonatal weights, we sought to determine the impact of race‐based customization of fetal growth curves on the antenatal ...
P. Ramesh, L. Lemon, J. C. Larkin
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Haiyang yu huzhao卤虫(Artemia)是生存在高盐水体中的小型甲壳动物，其能够耐受多种极端环境，并可在不同的栖息地展现出不同的生理适应性，然而目前对于不同海拔地区卤虫肠道微生物组成及其与卤虫环境适应机制了解甚少。采用16S rRNA高通量测序和代谢组学技术，首次对来自高海拔地区的拉果错卤虫(A. tibetiana)和低海拔地区的渤海湾卤虫(A. franscicana和A.
韩 学凯 +5 more
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Shuitu Baochi Xuebao, 2023 为探讨气候变化下灌草群落中主要植物水分来源差异及动态变化。以黄土高原典型自然恢复植物(油蒿、苜蓿与藜)为研究对象,通过减少自然降水的15%(中度干旱)与30%(极端干旱)来控制干旱程度,研究植物水分利用来源与生长对干旱胁迫的响应特征。将植被群落潜在水源划分为浅层(0—20 cm)、中层(20—60 cm)与深层(60—120 cm)土壤水,采用稳定水同位素技术与MixSIAR模型定量分析不同干旱胁迫程度(减雨30%、减雨15%与对照)下植被根系水分吸收特征。结果表明:(1 ...
罗立娇 +5 more
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Global drivers of the conservation–invasion paradox
Conservation Biology, Volume 39, Issue 5, October 2025.Abstract The conservation–invasion paradox (CIP) refers to a long‐term phenomenon wherein species threatened in their native range can sustain viable populations when introduced to other regions. Understanding the drivers of CIP is helpful for conserving threatened species and managing invasive species, which is unfortunately still lacking. We compiled
Yanhua Hong, Zhiyong Yuan, Xuan Liu
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Integrative Conservation, Volume 4, Issue 3, Page 287-301, September 2025.Qilianshan National Park covers approximately 40% of core snow leopard habitat patches and 50% of movement corridors between patches. Including more of these important areas within the park boundaries should be considered, as the Qilianshan National Park sits at a pivotal juncture between critical snow leopard habitat in China and Mongolia, and may ...
Aliana Norris +6 more
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野生动物学报, 2021 随机选取湖南石门性成熟棘胸蛙（Quasipaa spinosa）103只（雌性53只，雄性50只），通过测量和比较头体长等16个形态数量性状以及体重等10个重量数量性状，用独立样本t检验和协方差分析的方法检验该物种所有数量性状的两性差异，并用线性回归法分析其生殖力与体大小之间的关系。结果表明：棘胸蛙平均体长，雄性为（10127±180）mm，雌性为（10102±118）mm，两性异形指数为0002，雌雄个体的头体长和体重间差异不显著（P>005）。其他局部性形态数量性状与头体长都呈正相关 ...
龙嘉航 1 侯金亮 1 胡亚洲 1 向建国 1 潘望城 2
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Research on Microbial Community Structure and Function in 2 Strong Flavor Baijiu Daqu(2种浓香型白酒大曲中微生物群落结构及功能研究) [PDF]
Shipin kexue jishu xuebaoThe medium-high temperature Daqu (ZGW) and medium temperature Daqu(ZW)are mainly used for fermentation starter for strong flavor Baijiu. In the early days, ZW was used in the production of strong flavor Baijiu.
DENG Jie(邓杰) +5 more
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Integrative Conservation, Volume 4, Issue 3, Page 322-333, September 2025.A content analysis of 154 nature education lesson plans from China showed that educators designed diverse programs tailored to age‐specific developmental and social needs. Most focused on personal growth, such as cognitive development, mental well‐being, and family bonding, but few explicitly addressed environmental conservation goals.
Yue Li, Danning Lu, Xin Yu, Chuan Liao
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