Results 11 to 20 of about 194,218 (173)
Guangtongxin yanjiu, 2008 文章介绍了可调谐激光器的波长调节及稳定控制的设计方法,并通过试验验证了其可行性。该设计由温度控制、偏置电流控制及锁波电路3部分组成,温度控制粗调波长,偏置电流控制微调波长,而锁波电路主要是针对外界温度发生变化时提供反馈。它适用于温度控制型分布反馈式（DFB）可调谐激光器的外围电路设计。
田军 +4 more
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Zhongshan Daxue xuebao. Yixue kexue ban, 2016 摘 要： 【目的】 探讨ｍｉＲＮＡ－２１转录调控因子ＡＰ－１、ＳＴＡＴ３、ＮＦＩ１、ＣＢＰ、ＥＢＰ、ＴＧＦ－β、ＢＭＰ－６、ＧＦＩ１的结构特征及其与ｍｉＲＮＡ－２１转录结合位点。【方法】 利用生物信息学工具分析ｍｉＲＮＡ－２１转录调控因子的理化性质、三级结构、跨膜区、信号肽、亚细胞定位及预测与ｍｉＲＮＡ－２１转录结合位点。【结果】 等电点分析表明ＳＴＡＴ３等电点小于７．０，其余７个转录调控因子等电点大于７．０；脂溶指数分析显示，ＥＢＰ脂溶指数大于１００，为亲水性蛋白 ...
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Plant invasion in mountain ecosystems reduces soil micro‐food web complexity at higher elevations
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic activities have accelerated plant invasions in mountain ecosystems, impacting the structure and functions of native plant communities. Changes in above‐ground vegetation can drive shifts in below‐ground biota, yet the effects of plant invasions on soil ...
Runjie Jiao +8 more
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Shuitu Baochi Xuebao, 2021 为了研究植被对坡面细沟侵蚀调控机制，采用模拟降雨试验，结合激光扫描方法，分析了不同草带分布沟坡面细沟侵蚀发生、发展过程。结果表明：草带位于梁峁坡下部60%，植被调控侵蚀效果最优，相比裸坡减少径流量7.4%，减少产沙量62.9%，相比蓄水减沙功效而言更具直接拦沙的功能。植被通过调控细沟侵蚀的发生、发展、发育过程实现了对土壤侵蚀的调控作用，尤其是对沟坡侵蚀产沙的调控作用；而且这种对侵蚀的调控作用不仅改变了细沟侵蚀发生的位置，而且改变了径流和侵蚀过程以及侵蚀方式；细沟侵蚀已经向面蚀（片蚀）转化 ...
贾莲莲, 刘雅丽, 朱冰冰, 张霞
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil salinization and alkalization often suppress microbial functional activity, triggering negative feedback loops in microbial metabolism, degrading nutrients and agricultural productivity.
Yuqi Chen, Lingying Xu, Xu Zhao
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野生动物学报, 2020 鹿茸是雄性鹿科动物（除驯鹿外）特有的能够周期性再生的器官，其生长发育受到多种因素的共同调控。miRNA（microRNA）是一类在真核生物中发现的内源性的具有调控功能的非编码RNA，在基因表达调控、细胞周期、生物体发育等方面发挥着重要的调控作用。本文从miRNA的相关技术、鹿茸组织中miRNA的鉴定、miRNA对生长因子的调控作用、miRNA对鹿茸细胞增殖的作用以及miRNA对鹿茸再生调控的研究几个方面就现有miRNA对鹿茸生长发育的研究进行总结和展望，为今后鹿茸生长发育机理的诠释具有一定的意义。
韩若冰 +4 more
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AI foundation models in plant biology
New Phytologist, EarlyView.Foundation models decode genomes, engineer proteins, phenotype crops, and drive AI agents across plant biology. This figure was created in BioRender (BioRender.com/xcmmkel). Summary Rapid technological progress has enabled plant biologists to accumulate unprecedented volumes of multi‐scale, multi‐modal data, yet this abundance of data has intensified ...
Haopeng Yu
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Floral bilateral symmetry: one axis, many details
New Phytologist, EarlyView.Dorsal petal morphological diversity among monkeyflower species. Summary Symmetry is a major component of floral diversity. Most flowers are radially or bilaterally symmetric, with bilateral symmetry (monosymmetry) having evolved repeatedly from radial ancestors. Since the identification of the dorsal identity gene CYCLOIDEA (CYC) in snapdragon, floral
Ya Min
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New Phytologist, EarlyView.Design of the VPDrought experiment in a Scots pine (Pinus sylvestris) forest at the Pfynwald research platform. Summary Atmospheric and soil drought are major, yet typically confounded, drivers of tree stress. Rising vapor pressure deficit (VPD) may impair forest function independently of soil moisture decline, yet stand‐scale experimental separation ...
Marcus Schaub +9 more
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Gaoya dianqi, 2023 电池储能系统被认为是解决可再生能源的不确定性和不平衡性导致的功率不足和频率波动的有效途径。基于此，文中提出了一种基于电池的荷电状态SOC(state of charge)的电池储能系统混合控制策略。首先，文中将电池的SOC、调频和调峰需求划分为不同的区域，并对调频和调峰提出相应的控制策略，提出SOC自恢复控制策略。之后提出储能的混合控制策略，基于电池储能的SOC，将储能的调频与调峰功能与SOC自恢复策略相结合，实现储能对电力系统的优化。最后通过仿真分析验证该控制策略的合理性与应对可再生能源波动的能力。
李盈 +9 more
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