Results 21 to 30 of about 506,383 (198)
Zhejiang Daxue xuebao. Lixue ban, 2007 为了使ZGB模型结果更接近实验中没有O的中毒态，利用改进的ZGB模型模拟化学反应.应用蒙特卡罗模拟方法研究考虑次近邻格点参与化学反应的ZGB模型的相图.观察到一级相变点值变大，二级相变点值变小，反应窗口变宽.模拟得到相图更接近实验，加深和拓宽了对ZGB模型吸附机制的理解和掌握，同时对非平衡态物理的内在规律有了进一步的认识.
GANKe-chong(淦克冲) +2 more
doaj +1 more source
Wildlife Letters, EarlyView.We used spatially explicit capture‐recapture to estimate jaguar densities in a private reserve in the Colombian Llanos and quantified land cover change in and around the reserve from 2014 to 2024. Densities increased 22% since 2014, while disturbed land cover increased by 39%–54% around the reserve depending on buffer distance. Our study indicates that
Valeria Boron +7 more
wiley +1 more source
四川大学学报. 自然科学版, 1999 提出了基于综合鉴别函数和相移功率谱相减，具有旋转不变性的联合变换相关识别方法．该方法是将综合鉴别函数作为联合变换相关输入的参考物图象，结合相移功率谱相减方法，来获得具有识别目标的旋转不变性和高的相关识别率 ...
刘馨, 陈怀新, 陈祯培
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Wildlife Letters, EarlyView.Reported annual per‐capita harvest of muskrats (PCHM) decreased as wetland complexity (total number of wetland patches) decreased in 13 state and federal wetland areas in the Midwest, USA. Our results support the hypothesis that regional‐scale declines in the abundance of muskrats are likely associated with the losses to wetland habitats throughout the
Tim L. Hiller +5 more
wiley +1 more source
四川大学学报. 自然科学版, 2002 用能量 1.7MeV不同注量的电子辐照CuZnAl形状记忆合金样品 ,通过循环水冷的方法 ,将辐照控制在马氏体相进行 .实验结果表明 ,样品被辐照处理后 ,其马氏体相变温度和相变滞后 ,以及相变特征温度T0 都随辐照注量的增大而升高 ;当辐照注量在 6 .30× 10 2 0 m- 2 ～ 1.89×10 2 1m- 2 时 ,其相变温度变化渐趋平缓 .作者认为 ,这是由于电子辐照产生的点缺陷造成了马氏体相点阵畸变 ...
祖小涛 +6 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
Organ‐specific ozone and nitrogen legacies strengthen substrate control over litter decomposition
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Elevated tropospheric ozone (O3) and nitrogen (N) deposition are concurrent atmospheric changes that strongly influence terrestrial carbon cycling, yet their combined effects on below‐ground decomposition remain poorly understood.
Xiaofan Hou +8 more
wiley +1 more source
Dianci bileiqi, 2019 接地网是电力系统重要的防雷、防静电及过电压防护设施,在接地网设计或施工前进行接地模拟试验是预测接地网接地参数、衡量接地体接地特性的常用方法。石墨复合接地材料、多层电镀接地体、扁状等一系列非圆柱形接地体在采用相似理论进行接地模拟试验时,经常面临多个相似项不能按照相似准则进行缩比的问题。首先采用量纲分析法,提出了考虑接地体的三维尺寸、接地体材料参数等相似项的接地模拟试验完全相似模型。随后,提出接地模拟试验中畸变相似项、畸变系数、单畸变相似模型以及多畸变相似项等概念,给出接地模拟试验畸变相似模型的数学表征法 ...
胡元潮 +5 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Root activity creates unique microbial hotspots in the rhizosphere by influencing the metabolic activities of surrounding soil microorganisms, profoundly regulating the dynamics of soil organic carbon (SOC). However, how root economic strategies affect the formation and
Qiyu Tan +8 more
wiley +1 more source
四川大学学报. 自然科学版, 1999 近年来，人们对于过渡核的形状相变问题十分关注，文［１］利用系统比较每一同位素核链的实验壳能随中子数的变化来研究形状相变，确定了一些核的相变点．我们通过直接计算原子核的势能曲线随中子数的变化来分析这一问题，直观清楚地得到相变点．对于原子核形状的讨论，在...
张静, 廖继志
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