Results 131 to 140 of about 67,433 (297)
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
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Gaoya dianqi, 2019 为实现通过局部放电检测来准确诊断电气设备绝缘缺陷并对危险放电状态进行预警,文中对模拟电力变压器绕组匝间和饼间局放缺陷的油楔放电模型,采用恒压法和全实时高频/特高频联合检测系统,对其发展至击穿全过程的局放信号进行了研究。通过改变外施电压,研究了电压水平对油楔放电发展进程的影响;总结了不同电压下油楔放电发展全过程特征参数的变化规律,提出了放电阶段状态划分的方法和原则;从机理的角度对不同阶段的放电机制进行了解释。研究表明,恒压下,不同电压水平油楔放电均存在平稳发展和加速劣化发展两种典型阶段 ...
李金忠 +4 more
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, 2010 围绕我国淡水水体中最常见水华优势种-微囊藻(Microcystis)其休眠体复苏机制国内外主要研究进展进行了介绍及评述。涵盖了微囊藻休眠体越冬过程中细胞形态及结构变化和光合活性及生理代谢变化;介绍了微囊藻休眠体在复苏过程中的主要环境影响因子;并指出了今后新方法 ...
万能, 宋立荣, 汤俊
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang +5 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra +3 more
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The Hour that Never Comes and the Time that Remains
Journal of Analytical Psychology, EarlyView.Abstract This essay proposes a symbolic and clinical investigation of psychic temporality through two archetypal experiences of time: the hour that never comes and the time that remains. Drawing on analytical psychology, trauma theory and aesthetic philosophy, text explores how certain forms of suffering resist chronological resolution and persist as ...
Daniel Françoli Yago
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野生动物学报作为宿主的“第二套基因组”，消化道微生物与宿主的营养吸收和免疫抵御等功能紧密相关。与陆生哺乳动物相比，海洋哺乳动物鲸类的消化道微生物是目前国内外关注较少的研究领域。已有研究表明，鲸类消化道微生物极易受到食物和栖息地环境等因素的影响，然而现阶段研究手段以基于粪便样品进行高通量测序为主。本文对鲸类消化道微生物的研究手段、群落结构、功能特征和调控策略等方面的进展进行总结和分析，并对未来发展方向提出展望和建议。
万晓玲, 郑劲松, 郝玉江, 王丁
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Mechanistic Study on Selenite Absorption and Metabolism Promoted by Exogenous Nitric Oxide in Rice Seedling Roots [PDF]
, 2015 硒(selenium，Se)作为人和动物的必需元素之一，有非常重要的生理功能。可食性植物是人和动物的主要硒源，探索植物硒累积分子机制以及寻找提高植物硒含量的策略具有重要现实意义。 一氧化氮(nitricoxide，NO)作为一种重要的生物信号分子，在动植物体内起着重要的作用。低浓度NO对植物的生长发育以及多种逆境胁迫抗性具有重要影响。已有部分研究表明硒能引起植物体内NO的变化，且NO能缓解硒诱导的水稻脂质过氧化，但目前关于NO对硒吸收代谢调控的分子机制研究尚未报道。本文以重要的粮食作物水稻 ...
李秀玲
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Methods in Ecology and Evolution, EarlyView.Abstract DNA barcode‐based species identification has become pivotal in biodiversity research. Current barcoding‐based deep learning methods have advantages in species identification but exhibit significant limitations. By using COI barcoding alone, previous studies were unable to fully capture species identification features. Prior methods showed that
Bin Ye +4 more
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Zhongguo shiyan zhenduanxue, 2013 系列"组学"技术的发展推动了基础研究水平的提高和深入。代谢组学作为一门新兴学科,着重研究的是生物整体、器官或组织的内源性代谢物质的代谢途径及其所受内在或外在因素影响下代谢整体的变化轨迹来反映某种病理生物过程。目前,代谢组学已广泛应用于生物学和医学相关的很多领域,在肝脏、心脏、肿瘤、肾脏等疾病中也有较深入的研究。本文就代谢组学的研究进展进行综述 ...
陆荣华, 杜玉君
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