Results 31 to 40 of about 27,143 (131)
New Phytologist, EarlyView.Polyphenol oxidases (PPOs) depletion preserves endogenous proteins at their predicted molecular weights and enhances detectable enzymatic activities. (a) Less RbcL crosslinking in ppo mutant of Nicotiana benthamiana. Leaf extracts were incubated for 1 h, separated on protein gels, stained with Coomassie or analyzed by Western blot with the anti‐RbcL ...
Kaijie Zheng +4 more
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New Phytologist, EarlyView.Biosynthesis and accumulation of tanshinones in the periderm of Salvia miltiorrhiza during secondary root growth. Summary Perennial herbs develop long‐lived roots that undergo repeated cycles of secondary growth, during which the periderm functions as a protective barrier and a major site of specialized metabolite accumulation.
Licheng Liu +19 more
wiley +1 more source
Gaoya dianqi, 2015 笔者以800 kV GIS（gas insulated switchgear）高压开关设备的抗震性能为研究对象,采用模态分析理论对设备进行动力特性分析,得到了结构自振频率和振型。分别利用反应谱理论和时程分析理论对结构进行地震动特性分析。通过反应谱分析和输入天津波、EI-Centro波、taft波的动力时程分析,讨论了这两种分析方法结果上的一致性与局限性。并根据几种不同地震波对高压开关设备的不同影响,得出相对于taft波振幅和持时较小的天津波对设备产生破坏作用最大;经过对频率调整,具有相同幅值的两种EI ...
林莘, 李丹, 徐建源
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Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19
Policy Studies Journal, Volume 54, Issue 3, August 2026.Abstract The COVID‐19 pandemic sparked unprecedented experimentation in the German social assistance system, leading to changes previously considered impracticable by policymakers. This included a sanctions moratorium, easier access to benefits, and temporary cash transfers, all of which were advocated by welfare associations—key organized interests ...
Christopher Smith Ochoa
wiley +1 more source
Policy Studies Journal, Volume 54, Issue 3, August 2026.ABSTRACT As the Narrative Policy Framework (NPF) begins to unpack issues of power and narratives, the main focus has been on power‐over and domination rather than more transformative notions of power‐to and empowerment. This article draws on insights from gender and policy studies and suggests that the NPF benefits from adopting a multifaceted notion ...
Hilda Broqvist
wiley +1 more source
Dianci bileiqi, 2016 气吹灭弧防雷间隙是一种利用气流主动灭弧的新型防雷装置。通过建立气流与电弧的数学模型,对气流与电弧运动过程进行计算分析。并利用有限元软件ANSYS 14.0对灭弧过程中的压力场以及气流与电弧的相互作用过程进行仿真,对仿真结果进行分析,得出灭弧时间。并在此基础上对气吹灭弧防雷间隙的灭弧效果进行试验分析,利用高速摄像机、示波器记录实验过程中的灭弧图像、电弧波形以及气流响应时间波形图,通过对这些数据的分析得出气流响应时间和灭弧有效时间。并与仿真结果进行对比,证明该间隙的灭弧可靠性 ...
郭伟, 郭峰, 王巨丰
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浙江大学学报. 医学版目的分析浙江省舟山市中老年人群生命历程多重因素与生理失调的关联，并分析生活方式和心理健康状况在以上关联中的中介作用。方法基于浙江代谢综合征队列舟山六横子队列，纳入1553名45岁及以上海岛居民的人口学信息、生命历程信息、生活方式和心理健康信息，并采集血液标本。通过生理失调计算模型对老化状态进行评估。采用夏普利值分解法评估生命历程多重因素对生理失调差异的累积和相对贡献度；采用主成分分析和层次聚类分析相结合的方法确定四个亚群，采用一般线性回归模型评估生命历程亚群与生理失调之间的关联 ...
曹 星琦 +9 more
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Zhejiang Daxue xuebao. Lixue ban, 2017 采用紫外/可见分光光度计、激光粒度分析仪、微电泳仪等，探究壳聚糖投加量对白芍水提液絮凝率、分形维数、粒度分布、ζ电位的影响.实验结果显示，壳聚糖投加量为3.2 mL（0.31 g• L-1）时，絮凝率达到最大值80.88%,此时总黄酮损失率为10.67%，上清液平均粒径为5.42 µm，ζ最接近零电位，为—1.168 2 mV，絮体分形维数为1.463；应用激光粒子测速(PIV)系统对絮体的沉降过程进行分析，建立了沉降过程的数学模型，絮凝过程的最大沉降速度为0.324 1 mm • s-1 ...
ZHANGJianwei(张建伟) +3 more
doaj +1 more source
Mechanoluminescent Mixed‐Anion Borate Sr2B5O9Cl:Eu for Dynamic Anticounterfeiting
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Mechanoluminescence (ML)—the emission of light in response to mechanical stimuli—offers a direct and visually intuitive route for transducing mechanical information into optical signals. Herein, we report a mixed‐anion strategy to prepare mixed‐anion borate Sr2B5O9Cl:Eu phosphors through a facile, low‐temperature, and ambient‐atmosphere solid ...
Yuhong Han +7 more
wiley +1 more source
四川大学学报. 自然科学版, 2009 在嵌入式系统的系统级建模和性能分析过程中,经常需要定量地分析和评估系统的平均延时、CPU占用率等性能指标.本文基于SystemC语言,针对嵌入式系统设计了一套性能分析评估的库函数,用于统计性能参数样本、计算期望值和置信区间,同时在性能指标满足要求的精度时终止仿真.并详细阐述了性能分析库函数的设计方法.以语音识别系统为例,设计了一个虚拟仿真平台,并使用该性能分析库函数进行性能分析,仿真结果表明,设计的库函数适用于嵌入式语音识别系统的性能分析,在一定程度上对SystemC的类库进行了扩展.
刘金伟 +4 more
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