Results 21 to 30 of about 1,720,092 (161)
Gongye shui chuli, 2013 微生物共代谢是对污水中难降解性有机物生物降解的一种重要方式,共代谢过程中产生的非专一性关键酶可以促进难降解有机物的降解。大量的研究结果表明,选择合适的菌种和生长基质、控制生长基质和目标污染物的投加比、优化反应条件均可提高共代谢反应的处理效果。基于共代谢的作用机制,分析了影响共代谢的若干影响因子,旨在揭示共代谢对难降解有机物的降解机理。
张为 +4 more
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Effects of Mepiquat Exposure on Rat Urine Based on Metabolomics(基于代谢组学分析缩节胺暴露对大鼠尿液的影响) [PDF]
Shipin kexue jishu xuebaoMepiquat (Mep) is a food contaminant produced usually during heat processing. It is formed by Maillard reaction with free lysine, reducing sugar and alkylating agent under typical roasting conditions.
HU Chuanqin(胡传芹) +3 more
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Gongye shui chuli, 2005 试验对正在运行的生物预处理以及后续处理工艺进行了调查,了解了生物预处理的出水有机物变化以及对后续处理工艺的影响。试验表明:由于微生物新陈代谢产物溶解在水中的缘故,生物预处理出水会出现有机物增加的现象,影响了后续处理工艺的去除效果。对出水进行的分子质量分布测试表明,微生物新陈代谢产物会产生大量的消毒副产物。生物预处理无法降低水的致突变性。
董秉直 +4 more
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Herbivory enhances cadmium foraging in the invasive hyperaccumulating plant Phytolacca americana
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Biological invasions and heavy metal pollution are two pervasive environmental challenges threatening global ecosystems. While the elemental defence hypothesis posits that certain plants accumulate heavy metals to deter herbivores, it remains unclear whether invasive ...
Jingge Kuang +5 more
wiley +1 more source
Zhongguo youzhi, 2023 油脂是人体主要的三大营养素之一，合理膳食油脂对人体供能、提升免疫功能、维持神经和生理活性提供了保障。甘油三酯（TAG）作为食用油脂主要成分，在消化代谢后容易转化为储能脂肪，使机体负担较大。甘油二酯（DAG）是一种天然TAG替代脂，被证明具有多种营养功能。旨在为DAG作为新型健康油脂的应用提供理论基础，综述了DAG的代谢机制以及DAG主要的营养功能。DAG具有和TAG相似的理化性质，由于代谢途径与TAG的差异以及可以调控与脂肪氧化相关基因的表达，使DAG具有促进脂肪氧化、抑制体质量增加、降低内脏脂肪含量 ...
毛逸霖1，周俊1，陈凯2，汪勇1，张震1 MAO Yilin1，ZHOU Jun1，CHEN Kai2，WANG Yong1，ZHANG Zhen1
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Magnetic particles coated with carbon shells have been considered as promising electromagnetic wave absorption materials with antibacterial features. However, how to precisely control the monodispersed magnetic nanoparticles on a carbon matrix to manipulate impedance matching and antibacterial performances is still a key challenge.
Xiaofei Li +10 more
wiley +1 more source
Gongye shui chuli, 2023 综述了利用氨氧化共代谢强化去除药物类污染物的研究现状，介绍了相关的微生物及其功能性酶对不同目标污染物的转化能力与转化机理，并分析了一些重要的影响因素及相应的控制策略。结果表明，与生长代谢途径相比，氨氧化共代谢在去除高毒性或难降解药物类污染物时具有明显优势。在合适的范围内，多种药物的降解速率与氨氮负荷呈正相关；当氨氧化受到抑制时，多种药物的去除率出现了不同程度的下降。同时也有研究发现某些共代谢产物具有比母体化合物更强的生态毒性或持久性。在工程应用中，氨氧化共代谢对药物类污染物的降解能力受多种因素的影响 ...
许怀浩, 王铸, 邓岳鹏, 胡春
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Functional Ecology, Volume 40, Issue 7, Page 2068-2082, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Grasslands worldwide are experiencing severe degradation due to overgrazing, climate change and anthropogenic disturbances, resulting in substantial declines in biodiversity and ecosystem functioning.
Xiaoqi Wang +5 more
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Functional Ecology, Volume 40, Issue 7, Page 2332-2344, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometric ratios of carbon (C), nitrogen (N) and phosphorus (P) serve as important indicators for assessing nutrient balance in forest ecosystems, but their relationships with photosynthetic dynamics require deeper characterization.
Minghao Chen +9 more
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Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019 目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua +6 more
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