Results 21 to 30 of about 20,101 (141)
Shuitu Baochi Xuebao, 2007 土壤水分特征曲线（SWCC）测定过程本身会引起很大的容重变化。随着容重的增大,土壤的持水特性也发生改变。为了明确这种容重变化对土壤水分特征曲线的影响,本研究以4种原状土壤为例,用离心机法测定了不同定容重下的土壤水分特征曲线,分析了容重变化对Brooks-Corey和van Genuchten模型参数的影响。结果表明：土壤的容重越大,相同吸力下所对应的有效饱和度就越大,水分特征曲线就越平缓。4种土壤的参数A和α均随容重的增大而减小,可用幂函数表示。黑垆土和土娄土的λ、n随容重的增加而增大,可用线性函数描述,
付晓莉, 邵明安
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International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines multilingual practices in research interviews, focusing on English lexical insertions in Chinese‐language research interviews with teachers of Chinese in Australian secondary schools, and treating these code‐switches as analytically meaningful rather than incidental.
Chengwen Yuan, Tianwei Zhang, Gary Bonar
wiley +1 more source
Gaoya dianqi, 2004 电力系统中使用真空断路器切除无功补偿用并联电容器时,容易产生重燃过电压,严重影响并联电容的安全运行。笔者对10kV系统中切除并联电容器时所产生的重燃过电压进行了模拟计算,着重分析了影响重燃过电压大小的因素,并研究了利用MOA对并联电容器进行过电压保护的效果。
杜斌 +4 more
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Powerful representation of the poor? German welfare associations' narrative advocacy during COVID‐19
Policy Studies Journal, EarlyView.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
Shuitu Baochi Xuebao, 2019 以紫色土为研究对象，通过室内重塑土试验，采用多元回归方程和曲面响应等分析方法，研究容重和含水率对紫色土崩解特性的影响。结果表明：（1）在相同容重下，崩解量随着含水率的增加而减小，不同含水率的土样崩解时间有所不同；土样完全崩解时间总体上随着含水率的增加而延长，且崩解量主要集中在崩解阶段前3 min。（2）在相同含水率下，崩解量随着容重的增加而减小，土样完全崩解时间总体上随容重的增大而延长，且崩解量主要集中在前4 min。（3）在相同容重和含水率下，土样崩解速率均随着容重和含水率的增大而减小；较之容重 ...
李敬王, 陈林, 史东梅, 张佳宝
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Democratic Values in Citizen Participation: What Citizens Prioritize in Participation
Policy Studies Journal, EarlyView.ABSTRACT Citizen participation is often initiated to strengthen democracy. While participatory innovations are typically assessed through normative frameworks emphasizing democratic values, little is known about which of these values are prioritized by citizens.
Take Sipma, Frank Hendriks
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The stability of aqueous Zn2+ batteries is severely hindered by parasitic reactions at the Zn anode/electrolyte interface. Herein, itaconic acid (IA) is introduced as an effective electrolyte additive to achieve a highly stable zinc anode. Remarkably, IA concurrently modulates both the zinc anode/electrolyte interfacial structure and the Zn2 ...
Chenggang Wang +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2011 采用经典统计学方法,通过网格布点,研究黄土高原坡地表层土壤水分和容重在降雨后不同时段的空间变异特征。结果表明:(1)降雨后第1天,表层土壤水分和容重的变异程度分别为中等、弱变异性;在各坡向间土壤水分呈阴坡>阳坡>山脊的变化趋势,容重为阴坡>山脊>阳坡;(2)降雨后第20天,土壤水分和容重的变异程度均保持不变,但土壤水分在不同坡向间的数量特征发生改变(阴坡>山顶>阳坡),而容重的变化趋势保持不变;(3)表层土壤水分具有弱的时间稳定性,而容重的时间稳定性较强。(4)相关分析表明,降雨后第1天 ...
王云强, 张兴昌, 朱元骏, 曾辰
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Veterinary Dermatology, Volume 37, Issue 2, Page 247-256, April 2026.ABSTRACT Background Identification of offending foods in dogs with adverse food reactions is usually based on “deterioration” during open food challenges. Objectives To examine the placebo effect during double‐blinded, placebo‐controlled food challenges using a predefined set of criteria for relapse.
Evi I. Sofou +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2020 土壤抗剪强度既可评价土壤侵蚀敏感性，也是反映耕层土壤耕作性能的重要参数。不同剪切方式下土壤抗剪强度指标存在一定差异，以紫色土坡耕地耕层土壤为研究对象，采用室内重塑土三轴及直剪试验方法，研究容重和含水率对紫色土坡耕地耕层土壤抗剪强度的影响，并分析了2种试验方法的差异性。结果表明：（1）紫色土坡耕地耕层土壤黏聚力（c）总体随容重（ρd）增大而增加，随含水率（w）增加而减小，三轴及直剪试验条件下黏聚力最大值均出现在容重1.4 g/cm3、含水率10%水平下，分别为32.33，21.78 kPa ...
张健乐 +4 more
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