Results 21 to 30 of about 26,223 (169)
Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2011 过氧化脂质（Lipid Peroxidation LPO）是反映自由基对机体损伤的指标,超氧化物歧化酶（Superoxide Dismutase SOD）是生理状态下机体存在的防止自由基反应的酶,它能清除自由基 ...
姚刚, 马兴钢
doaj
The impact of iron metabolism system on a common mechanism of antimicrobial lethality [PDF]
, 2016 传统研究认为不同种类的抗生素有其各自不同的杀菌途径，然而近年人们发现了一条抗生素杀菌的共用通路，那就是当细菌细胞受到抗生素致死性刺激时，呼吸链将代谢异常产生大量活性氧簇（ROS），而铁离子对ROS介导的杀菌至关重要。本研究参阅近年来国内外研究结果，通过基因突变、铁离子竞争物等实验方法着重研究了细菌铁代谢系统与抗生素共有杀菌途径之间的关系，重点讨论抗生素刺激下铁离子的调控及其与抗生素介导ROS形成的相互作用关系。对于细菌耐药机制的研究与寻找新型药物作用靶点、开发新药有重要意义。 本研究对铁储存蛋白相关基因（
冯锦芝
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War and Peace: Ogawa Takemitsu's Theological Engagement with State and Religion
Journal of Religious History, EarlyView.The Manchurian Incident of 1931 marked a pivotal moment in the rise of Japanese fascism. During the period from this incident until the Pacific War's defeat, dissent from the state's control was not tolerated, leading to coercive measures in religious communities. The Christian community, rather than devising theological reasoning to resist the state's
Eun‐Young Park, Do‐Hyung Kim
wiley +1 more source
Genetic analysis and gene mapping of panicle branches stay-green trait in rice [PDF]
, 2016 水稻是重要的粮食作物之一，全球一半以上的人口以大米为主食。随着世界人口的增长，人们正面临着越来越严重的粮食危机。如何增加水稻产量一直是作物育种以及植物学研究的重要目标。近年来水稻遗传育种工作者发现了一些成熟期叶片的叶绿素不降解或仅少量降解而使叶片仍保持绿色的持绿型水稻品种，研究发现其叶片持绿性状多数属多基因控制的数量遗传，少数属隐性主效基因控制的质量性状遗传，相关基因大多已被鉴定及克隆。迄今为止，尚未见穗枝梗持绿性状的研究报道。佳辐占系本课题组育成的优质高产早稻品种，已在生产上大面积推广应用 ...
王永杰
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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
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2002 目的 证实西比灵对急性脑梗死患者血清中自由基的影响。方法 选取急性脑梗死患者 ,随机分为一般治疗组、自由基清除剂治疗组、西比灵治疗组、自由基清除剂加西比灵治疗组 ,对各组患者于治疗前后进行疗效评定 ,于治疗前、治疗后 3、7、15d分别采静脉血 ,应用WSPS法测定LPO含量 ,化学发光法测定SOD活性。结果 西比灵治疗组LPO含量降低 ,SOD活性稳定 ,自由基清除剂加西比灵组LPO含量降低更加明显。结论 西比灵可抑制脑梗死患者脑组织内自由基的生成 ,与自由基清除剂联合应用疗效更加显著 ...
刘松岩 +4 more
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Molecular mechanism of the role of ROS signaling pathway in the antioxidant properties of TKE2 cells [PDF]
, 2016 目的:目前ROS在干细胞生物学中的作用还没有得到充分说明和了解。在过氧化氢（H2O2）诱导的氧化应激条件下，我们比较小鼠角膜上皮祖细胞（TKE2）[1]和成熟的小鼠角膜上皮细胞（MCE）的不同反应，重点研究是角膜干细胞的抗氧化细胞特性及相关机制。 方法:以小鼠角膜上皮祖细胞（TKE2）和成熟的小鼠角膜上皮细胞（MCE）为细胞模型，通过CCK8细胞活性实验检测不同浓度H2O2对小鼠角膜上皮的祖细胞（TKE2）和成熟的小鼠角膜上皮细胞（MCE）的影响。利用H2O2处理细胞24小时后 ...
葛连平
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Lessons learned from screening potential other effective area‐based conservation measures
Conservation Biology, EarlyView.Abstract Other effective area‐based conservation measures (OECMs) are sites that deliver effective biodiversity outcomes irrespective of their management objectives. These areas are widely expected to play an important role in efforts to protect 30% of Earth by 2030.
Carly N. Cook +15 more
wiley +1 more source
Conservation Biology, EarlyView.Scaling area‐based conservation, including initiatives led or comanaged by Indigenous Peoples and local communities, is a flagship goal of the Kunming‐Montreal Global Biodiversity Framework. Conservationists often aspire to scale initiatives, but this is rarely achieved in practice. Identifying and addressing factors that limit initiative adoption (i.e.
Thomas Pienkowski +39 more
wiley +1 more source