Results 31 to 40 of about 576,243 (160)

Radiographic identification and description of the equine middle conchal sinus (ethmoidal sinus): Implications for diagnosing middle conchal sinusitis

open access: yesEquine Veterinary Journal, Volume 58, Issue 6, Page 1627-1635, November 2026.
Abstract Background The middle conchal sinus (MCS) (ethmoidal sinus) remains one of the least understood equine paranasal compartments. Despite recognition of its involvement in sinonasal disease, disorders of the MCS often remain underdiagnosed in the absence of computed tomographic (CT) imaging due to limited anatomical understanding and challenges ...
J.‐B. Pavard   +3 more
wiley   +1 more source

铁基低镍电热合金的热变形行为 [PDF]

open access: yes, 1996
利用热模拟技术对铁基低镍电热合金的热变形行为进行了试验研究。绘制出了该合金的高温变形真应力-真应变曲线,并结合热变形后的显微组织分析了影响合金热变形行为的因素 ...
高宏, 陈其安
core   +2 more sources

井下工具心轴偏移对机械密封端面变形的影响

open access: yesShiyou jixie, 2012
基于有限元方法研究了导向钻进时导向工具的心轴产生弯曲变形对机械密封性能的影响,分析了导向钻进时心轴的最大变形状态,计算了在心轴偏转和内压作用下机械密封环端面机械变形程度,研究了密封环变形与压力之间的变化规律。计算结果表明,心轴弯曲对端面变形的影响较小,内压是端面变形的主要原因,不同压力下机械密封端面变形行为基本符合线性变化规律,确定了满足井下工具密封要求所需的介质压力。
周琴, 王瑜, 亓京波
doaj  

Reflexiones sobre la traducción de 姐姐 /jiejie/ (“hermana mayor”) y 妹妹 /meimei/ (“hermana menor”) en Sueño de las mansiones rojas

open access: yesOnomázein
Although 姐姐 /jiejie/ (“elder sister”) and 妹妹 /meimei/ (“younger sister”) are basic relatives' terms of the nuclear and consanguinity kinship, they mean a big challenge when they are translated into Spanish because of the linguistic and cultural differences and defaults between the Chinese and the Spanish.
openaire   +1 more source

The Making of the Right to Food: Tracing Food Policy Conflict and Negotiated Outcomes in Colombia

open access: yesWorld Food Policy, Volume 12, Issue 2, November 2026.
ABSTRACT The 2016 Peace Agreement between the Colombian Government and the FARC guerrilla group marked a historic step toward ending more than five decades of armed conflict. It also reshaped national food policy with lasting implications. During the negotiations, deep ideological divisions emerged between food sovereignty and food security, and these ...
Felipe Roa‐Clavijo
wiley   +1 more source

变形对矩形单脊波导特性的影响

open access: yesGuangtongxin yanjiu, 2012
针对脊波导器件在生产、装配及使用中可能产生的变形,采用有限元法研究了错位变形和受力变形对矩形单脊波导衰减特性、功率容量和阻抗特性的影响。数值分析结果表明:随着脊波导变形程度的增大,衰减常数增大,功率容量和特性阻抗减小,其中下侧受力变形对矩形单脊波导的特性参数影响最大,因此在波导器件的使用过程中应尽量避免下侧受力变形。
陈彩红, 陈小强
doaj  

基于Sentinel-1和Sentinel-2的像素偏移跟踪技术在强震形变监测中的比较分析

open access: yesDizhen xuebao
基于像素偏移跟踪技术的影像大地测量是获取同震地表形变的有效技术之一,该方法通过影像匹配获取亚像素级的大地震二维形变场,实际应用中主要包括基于SAR的像素偏移量跟踪技术(POT)和基于光学影像的互相关技术(OIC)。当前两种方法已广泛应用于强震形变监测领域,但针对两者技术特征、精度差异及适用场景的系统比较研究仍较匮乏。为系统分析对比两种方法的应用效能,以2022年1月8日门源MW6.7地震和2019年7月美国Ridgecrest MW6.4和MW7.0地震为例,基于Sentinel-1和Sentinel ...
Luwen Wang   +3 more
doaj   +1 more source

Adding the Farmer Domain to Aquifer Recharge: Insights From Smallholder Farmers' Natural Water Retention Measures in the Danube–Tisza Interfluve, Hungary

open access: yesWorld Water Policy, Volume 12, Issue 4, November 2026.
ABSTRACT This paper describes and analyzes recharge practices in Bács‐Kiskun County, Hungary, within what can be categorized as the farmer domain. Such locally embedded aquifer recharge practices remain underexplored in Hungary. Current research and funding largely focus on large‐scale Managed Aquifer Recharge (MAR) interventions emphasizing intended ...
Helen Sundberg, Michael Gilek
wiley   +1 more source

Decarbonization and the Rescaling of Water–Energy Bargaining: How Renewable Expansion Is Reshaping Iran–Iraq–Türkiye Transboundary Water Politics

open access: yesWorld Water Policy, Volume 12, Issue 4, November 2026.
ABSTRACT This article examines how renewable‐energy expansion is changing water–energy bargaining among Iran, Iraq, and Türkiye in the Tigris–Euphrates basin. Much of the existing literature on transboundary water politics focuses on territorial control, upstream–downstream power asymmetries, legal rules, and hydro‐hegemony but gives less attention to ...
Umud Shokri
wiley   +1 more source

FRA法检测电力变压器绕组变形的试验研究

open access: yesGaoya dianqi, 2017
通过试验研究了频率响应分析法检测变压器绕组变形。首先分析了频率响应分析法检测变压器绕组变形的基本原理。建立了频率响应分析法试验平台,分析了影响频率响应分析法检测绕组变形结果的主要因素。结合相关系数法对两个典型算例变压器绕组进行了变形诊断分析。通过对变压器的频率响应测试数据比较分析,结果表明了用频率响应分析法判断变压器绕组变形仍存在一定的局限性。
张海军, 王曙鸿, 刘艳琴
doaj  

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