Response of nitrogen uptake and use of wheat varieties with different
, 2012 以小麦氮低效品种小偃6号和氮高效品种小偃22为材料,通过盆栽试验,利用开顶式气室在3种施氮水平(0、150和300 mg N/kg土)下,分析了两个品种小麦干物质和氮素积累、氮素干物质和籽粒生产效率、氮素收获指数以及花前营养器官贮存氮素在花后向籽粒的转运量和转运率对大气CO2浓度升高的响应。结果表明,施氮可增加小麦成熟期干物质和氮素累积量,提高氮素收获指数以及花前贮存氮素的转运量和转运率,但降低了氮素籽粒和干物质生产效率。与背景CO2浓度相比,在一定施氮条件下,CO2浓度升高对小麦以上指标具有正向效应 ...
李世清, 沈玉芳, 许育彬
core
[<i>L-</i>lactylation regulatory network in orthopedic degenerative diseases]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiShen J +8 more
europepmc +1 more source
[Advances in innate immune-mediated neuroinflammatory mechanisms of migraine]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanZhu W, Xu P, Liu Y.
europepmc +1 more source
Shuitu Baochi Xuebao, 2007 大气氮沉降对受氮限制的陆地生态系统碳截存/损耗的机理尚不清楚,尤其是对土壤有机碳(SOC)的输入、转化和输出过程的认识明显不足。本文论述了外源性氮素(氮沉降、人为增氮)对凋落物分解、土壤有机碳各组分周转的影响,以及土壤呼吸各组分(根系自养呼吸、根际微生物呼吸和SOM分解)对增氮的响应等领域的最新研究进展,指出了在上述研究领域中存在的问题,并提出拟解决的途径以及未来的可能研究方向,以期为该领域的研究提供参考。
doaj
[Exploration of the mechanisms of portal hypertension driven by metabolic disorders in non-cirrhotic stages of metabolic-associated fatty liver disease]. [PDF]
Zhonghua Gan Zang Bing Za ZhiZhao YQ, Wang Y, Liu JJ, You H, Zhao JJ.
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[Research Advances on Mechanisms and Interventions of DNA Methylation-Regulated Aging-Related Imbalance in Bone Metabolism]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanHe T, Li J, Mei Y, Xiao G.
europepmc +1 more source
Gongye shui chuli硝化过程和反硝化过程在水处理系统的生物脱氮中发挥着重要作用，其中硝化过程中的氨氧化是脱氮的限速步骤，其能够将低价态的氨氮转化为高价态的亚硝酸盐氮或硝酸盐氮，对氮的去除起着关键作用。综述了氨氧化古菌（AOA）、氨氧化细菌（AOB）以及近年来新发现的完全氨氧化菌（Comammox）这3类氨氧化微生物的研究进展，包括其系统发育、反应动力学、代谢路径、产N2O机理和来源识别及其在水处理生物脱氮系统中的分布，并对其在生物脱氮工艺中的应用及未来的研究方向进行了探讨和展望，提出未来应针对AOA、AOB ...
耿宏, 任峻明, 周文明, 孟晗
doaj
[Research advances in nanobiotechnology targeting reactive oxygen species for radiation injury repair]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiGuo C +5 more
europepmc +1 more source
[Dietary serine supplementation inhibits the hepatic macrophage AKT/mTOR pathway and improves primary biliary cholangitis]. [PDF]
Zhonghua Gan Zang Bing Za ZhiRan Y +11 more
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[Selenium-containing polyurethane-modified titanium modulates osteogenic differentiation of mesenchymal stem cells and M2 polarization of macrophages]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanZhai M, Bai X, Fu Y, Xu H, Zhou Y, Lv L.
europepmc +1 more source