Results 61 to 70 of about 20,004 (173)
, 2019 功能化石墨烯因其优异的导电、传热和机械性能，应用前景广阔。为了解功能化石墨烯对海洋环境可能的生态毒性效应，将功能化石墨烯分别加入近岸海水（终质量浓度50 mg/L）和沉积物（终质量分数50 mg/kg）中，通过模拟海洋环境对样品培养2周，并采用DNA高通量测序技术分析功能化石墨烯对海洋细菌群落结构的影响。结果表明功能化石墨烯对两种海洋环境来源的细菌物种组成均有明显影响，但影响效果不同：暴露于功能化石墨烯后，海水中细菌的物种多样性和丰度降低，而沉积物中细菌的物种多样性和丰度升高 ...
张作峰 +3 more
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Analysis of hair follicle microbiota in non-lesional areas of patients with moderate-to-severe acne vulgaris: a single-center cross-sectional study [PDF]
Objective·To study the differences in the structure and load of hair follicle microbiota in non-lesional areas among patients with moderate-to-severe acne vulgaris and healthy individuals, and to explore the relationship between microorganisms and the ...
JU Qiang +4 more
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Functional Ecology, Volume 40, Issue 2, Page 534-552, February 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Non‐structural carbohydrates (NSC) are critical mediators of plant adaptation to fluctuating light environments. They are tightly coordinated with plant economic strategy, that is, leaf economics spectrum (LES) and root economics spectrum (RES).
Lulu Xie +6 more
wiley +1 more source
Study on latitudinal gradient of species diversity in forest communities [PDF]
, 2015 森林群落结构和物种多样性的空间分异规律一直是生态学研究的热点问题。近年来，关于森林群落结构的描述与物种多样性的测定方法等研究也都有所发展，但这些研究大多是对森林生态系统的定性描述，而且方法不一，数据之间也缺乏可比性。 群落的组成结构是群落的重要标志，研究群落结构是研究群落物种多样性意义的理论基础，所以从群落组成结构的角度来探讨生物群落的物种多样性具有重要的意义，为进一步深入研究生物多样性功能及确定功能群提供理论基础 ...
孙影
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Genetic origins and climate‐induced erosion in economically important Asian walnuts
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract The global climate is undergoing unprecedented changes, posing significant threats to species persistence. However, the spatiotemporal impacts on genetic diversity remain poorly understood, hindering species conservation and management. Walnuts, generally referred to as Juglans regia and J. sigillata, are economically vital in Asia, but little
Peng‐Zhen Fan +17 more
wiley +1 more source
野生动物学报, 2016 线粒体基因组全序列的研究是近年来分子生物学研究的重要课题之一。本文对目前GenBank上公布的中国9种蜥蜴科动物线粒体基因组全序列的长度及组成进行分析,建立系统发育树,探讨蜥蜴科物种的起源、演化和亲缘关系。
马微微 刘 欢 赵文阁 刘 鹏
doaj
通过对比NSG小鼠探讨正常免疫小鼠人结肠癌移植瘤模型的特点和意义
Zhongguo shiyan zhenduanxue, 2020 目的比较NSG小鼠和正常免疫小鼠两种人结肠癌移植瘤模型的特点,为研究结肠癌发病机制和研制抗结肠癌新药提供更合适的模型。方法将C57BL/6、NSG小鼠分别按移植物的不同分为细胞对照组、细胞-微载体复合物实验组。首先将人结肠癌HCT116细胞与新型微载体共培养,建立细胞-微载体复合物,然后采用皮下注射方式将其接种于小鼠背部,记录肿瘤生长曲线,成瘤率及镜下病理学等特点。结果 C57BL/6小鼠实验组均成瘤,成瘤率达80%,对照组均未成瘤;NSG小鼠实验组与对照组均成瘤,成瘤率达90%。C57BL ...
程姝敏 +9 more
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Study on Change Law of Species Richness under Different Scales in Subtropical Evergreen Broad-leaved Forest [PDF]
, 2008 植物群落多样性主要指植物群落在组成、结构、功能和动态方面的多样化程度。从物种组成方面研究群落的组织水平或多样化程度是群落多样性最基础、最重要的研究内容。本文通过对不同面积的取样调查，详细、系统的研究了福建南靖南亚热带雨林与宁化牙梳山中亚热带常绿阔叶林群落物种多样性及其多样性在不同尺度下的变化规律。主要结论如下：(1)南靖南亚热带雨林样地中有维管束植物65科，109属，180种。其中蕨类植物14科，17属，23种；裸子植物2科，2属，2种；被子植物49科，90属，155种；双子叶植物39科，76属 ...
关少华
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Mitigating light pollution impacts on arthropods based on light‐emitting diode properties
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Light pollution from artificial light at night (ALAN) is a significant environmental problem with far‐reaching consequences for ecological systems. Recent innovations in light‐emitting diode (LED) technology may offer sustainable outdoor lighting solutions, but scientific evidence is lacking. We investigated the effects of various LED lighting
Nicola van Koppenhagen +3 more
wiley +1 more source
Preliminary analysis on feasibility and applicability of using freshwater data to extrapolate the saltwater marine quality criteria [PDF]
, 2012 在海洋环境风险评价及环境标准与基准的制定中,由于海水生物毒性数据的欠缺,通常引入淡水数据加以补充,以此推导海水的预测无效应浓度(PnEC),但该方法所推导PnEC的“失真“程度目前尚未完全清晰。本研究选取了Pb、Cd、马拉硫磷和狄氏剂四种典型化合物,应用SSd模型方法比较分析了分别基于淡水生物和海水生物以及二者一并使用推导的PnEC值之间的差异性和相关性。结果发现:淡水生物与海水生物对各化合物响应的敏感性具有一定的差异。对于重金属,淡水物种可能对其胁迫更具敏感性 ...
王莹, 王菊英, 穆景利
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