Results 31 to 40 of about 707,699 (138)
Biodiversity‐driven spatial conservation planning to delineate temporally stable regions
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract The accelerating loss of biodiversity underscores the critical need for effective conservation strategies, particularly in the face of climate change and anthropogenic pressures. We devised a conservation planning framework that adopts a temporal stacking approach to species distribution models and landscape connectivity analyses. These models
Mattia Iannella +5 more
wiley +1 more source
Shiyou jixie, 2015 连续管应用越来越广泛，但是由于连续管管径小、流阻大等特点，系统性地研究连续管钻井系统摩阻压降已迫在眉睫。基于理论研究，筛选相关计算模型，得到了符合连续管钻井实际的摩阻计算模型；筛选了4种数值模拟计算模型，并进行多盘管规格和多流量的数值模拟计算，通过分析计算结果与理论计算的误差，采用标准κepsilon模型作为数值模拟计算模型更为合适。开展了连续管钻井系统盘管摩阻压降试验，将理论计算、数值模拟计算与试验数据进行比较，在绝大多数试验流量测点处，它们的误差范围均在10%以下 ...
周博 +5 more
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Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 5, Page 613-622, May 2026.ABSTRACT Objectives To evaluate the effect of aspirin on gestational age at delivery due to preterm pre‐eclampsia (PE) in women with chronic hypertension (CH), to assess the predictive performance of the Fetal Medicine Foundation (FMF) first‐trimester competing‐risks model for preterm PE in this high‐risk group and to evaluate how parity, previous PE ...
D. L. Rolnik +23 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Lightweight and lead‐free radiation shielding materials remain urgently needed. This work designed a fluorite high‐entropy oxide (FHEO) system through a combined computational–experimental route. Density functional theory based on special quasi‐random structures was used to identify thermodynamically stable fluorites from a wide compositional ...
Xiangjie Duan +9 more
wiley +1 more source
Dianci bileiqi, 1992 陶瓷工业中耐火材料或制品的导热系数一般情况下随温度呈线性变化。本文从导热反问题出发,介绍了测定随温度线性变化的导热系数的数值计算方法,并进行了数值模拟。数值模拟结果表明:这种方法不失为一种有效的数值计算方法。
宛良德
doaj
Shuitu Baochi Xuebao, 2022 为探究不同坡度(5°,10°,20°,30°)条件下,不同质地砒砂岩土壤(灰白色、混合色、紫红色)的水分入渗特征及最优入渗模型。通过室内模拟土柱法对土壤的水分入渗特征和拟合结果进行对比分析。结果表明:(1)研究区不同坡面土壤容重在1.513~1.737 g/cm3,30°坡面下的灰白色砒砂岩土壤入渗能力较强,5°坡面下的紫红色砒砂岩土壤入渗能力较弱。(2) 在砒砂岩土壤一维垂直 入渗过程中,初始入渗率为2.000~8.600 cm/min,入渗时间3.500~5.000 min后达到稳定入渗率(0 ...
吴佩瑶 +4 more
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Veterinary Dermatology, Volume 37, Issue 2, Page 293-305, April 2026.Background: Canine atopic dermatitis (cAD) is a common, chronic skin condition characterised by epidermal barrier dysfunction, immune dysregulation and cutaneous dysbiosis. While “emollient plus” formulations are widely used in human atopic dermatitis, their role in cAD remains underexplored. Hypothesis/Objectives: To evaluate the clinical efficacy and
Beatriz Fernandes +8 more
wiley +1 more source
, 2000 运用新近开发的岩石破坏过程分析ＲＦＰＡ＾２Ｄ（Ｒｏｃｋ Ｆａｉｌｕｒｅ Ｐｒｏｃｅｓｓ Ａｎａｌｙｓｉｓ）系统，以含瓦斯煤岩的破坏过程分析为例，通过对含瓦斯煤岩突出孕育机制及其声发射的数值模拟，说明了数值模拟方法给含瓦斯煤岩空出机制及其预测理论的发展所带来的新契机，数值模拟再现了含瓦斯煤岩突出的发生、发展过程，模拟结果表明，复杂的瓦斯煤岩断裂 ...
唐春安 +3 more
core +2 more sources
Gaoya dianqi, 2000 本文通过在N S方程组中加入源项以考虑电弧效应的方法建立了一个电弧模型 ,数值方法采用Taylor galerkin有限元法。使用该模型对压气式SF6断路器的开断过程进行了数值模拟。计算模型考虑了移动的边界条件。给出了在不同开距下电弧温度分布、压力分布以及电弧电压等的数值计算结果 ...
牟京卫, K.Y.Park, J.K.Chong
doaj
SWEET1‐mediated glucose transport is crucial for energy availability in Arabidopsis
New Phytologist, Volume 249, Issue 4, Page 1816-1830, February 2026.Summary The stress‐responsive hormone abscisic acid (ABA) is known for its inhibitory effects on various physiological processes, including seed germination, often resulting in energy deprivation. Interestingly, ABA‐induced germination inhibition can be alleviated by exogenous glucose (Glc), mimicking a functional interplay between ABA and sugar ...
Xueyi Xue +3 more
wiley +1 more source