Results 11 to 20 of about 25,301 (167)
Journal of Animal Ecology, EarlyView.This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
wiley +1 more source
Structural Studies of Nuclear Receptor Nur77 Dimerization [PDF]
, 2015 核受体超家族是一类进化上相关并且能够与特定的DNA片段相互结合的转录因子。隶属于这一超家族的孤儿核受体Nur77，在各种不同刺激的诱导下，调控细胞生长、分化、凋亡，并在生物体发育的过程中发挥重要的作用，近年来已经成为一个重要的潜在药物靶点被广泛地研究。典型的核受体在受到特定的刺激下，若与相应配体结合，会以其配体结合结构域(LBD)为主发生同源或异源二聚化，并通过与DNA上被称之为应答元件的特定序列结合，发挥转录激活的生理功能。Nur77能够以单体、同源二聚体、异源二聚体三种方式分别与相应的应答元件结合 ...
李安忠
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Methods in Ecology and Evolution, EarlyView.Abstract Molecular identification of insect food webs can accurately reveal complex trophic interactions and serve as a foundation for understanding ecosystem functioning and advancing biodiversity conservation. This process typically involves DNA library construction, high‐throughput sequencing and subsequent steps, including data assembly, annotation,
Xiao‐man Zhang +9 more
wiley +1 more source
Calcium Distribution in the Sac of Leek (A. tuberosum Rottl. ex Spreng.) during development [PDF]
, 2015 Ca2+与高等植物的有性生殖过程密切相关，无论是大、小孢子发生、雌、雄配子体发育，还是传份、受精、胚胎发生等过程，Ca2+都在其中发挥着重要的作用。已有研究表明，花药发育过程中普遍存在Ca2+的特异动态变化；体外培养的花粉管还具有向高浓度Ca2+生长的特性；在雌性组织中继续有关Ca2+分布特征的探索是证实花粉管向钙性的关键。但目前为止，有关这方面的研究还不多，主要集中在开花前后胚珠中的Ca2+与花粉管定向生长的关系方面，而有关胚囊发育过程中Ca2+分布变化的研究却很少。 本课题选韭菜为实验材料 ...
成诚
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Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, EarlyView.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
Novel Single-Cell Method for Studying Toxin-Antitoxin Systems [PDF]
, 2016 细菌的抗药性危害日益严重，毒素－抗毒素（TA）系统在细菌内的异质性表达是多药耐受性存留细胞形成的重要原因。阐明致病菌中毒素－抗毒素系统的作用机理和生理功能对研发防控致病菌的新策略和疾病诊断治疗等具有重要意义。目前，对TA系统的研究主要集中在基因水平或转录水平，而传统基于蛋白质水平的检测方法，如WesternBlot等都是对大量细菌裂解液中的毒素抗毒素蛋白进行检测，是大量细菌内毒素抗毒素蛋白表现的集权平均。对单细菌水平的毒素－抗毒素蛋白进行快速逐一分析可揭示因集权平均而被掩盖的个体差异 ...
宋毅怡
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Geographic risks to functional groups of mammals and birds from habitat loss in Mexico
Conservation Biology, EarlyView.Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás +4 more
wiley +1 more source
Huli yanjiu, 2004 [目的 ]探讨体神经 -内脏神经膀胱功能重建术后病人生活质量的改善情况 ,为改进体神经 -内脏神经反射弧膀胱病人生活质量的护理措施提供依据。 [方法 ]选取 60例体神经 -内脏神经反射弧膀胱功能重建术后病人和 60例健康人群 ,采用调查问卷方式收集资料 ,并对影响生活质量的因素进行逐步回归分析。 [结果 ]体神经 -内脏神经反射弧膀胱功能重建术后病人生理功能、生理职能、躯体疼痛、总体健康、活力、社会功能、精神健康与健康人比较 ,差异有统计学意义 （P
李莹
doaj
中西医结合护理, 2022 Functional constipation has a serious impact on quality of life of elderly patients. This paper summarized the Research progress of external nursing technology of Traditional Chinese Medicine(TCM) in prevention and treatment of functional constipation in
WEN Mian (米文安) +3 more
doaj +1 more source
The preliminary study on the dyslipidemia in rats with autoimmune myocarditis [PDF]
, 2016 目的：心肌炎是心肌间质中局限或弥漫性的急性或慢性炎症，目前关于心肌炎中血脂代谢的相关研究较少，本课题通过建立大鼠实验性自身免疫性心肌炎模型（EAM模型），初步探讨心肌炎中血脂代谢紊乱可能的分子调节机制。 方法：利用猪心肌肌球蛋白和完全弗氏佐剂充分混合后，于第0天皮下注射建立大鼠EAM模型，留取心脏标本行组织切片H&E染色、心脏体重比、RealtimePCR、Westernblot评估心肌组织炎症程度；GPO-PAP法血脂试剂盒检测血脂水平；Filipin染色检测心肌组织内胆固醇水平 ...
戴东黎
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