Results 41 to 50 of about 1,350,451 (215)
Shiyou jixie, 2015 采用有限元仿真方法，根据结构失稳理论分析六级分支井分岔装置在20 MPa内压作用下相贯线部分出现鼓包变形问题。首先，模拟双相钢和IF钢不同壁厚、管径的六级分支井分岔装置在内压作用下的变形及应力分布，并测量分岔装置最大鼓包变形量与位置。然后，通过未加压分岔装置相贯线截面与加压变形后相同位置截面对比分析，发现相贯线截面存在的结构几何缺陷与厚度缺陷导致分岔装置变形，得出六级分支井分岔装置结构失稳极值点位置和导致最大鼓包变形的最大几何缺陷；在内压作用下 ...
邓治国 +7 more
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野生动物学报, 2020 本文采用免疫组织化学染色方法，探讨ghrelin在雄性食蟹猴生殖系统内的分布定位。通过对ghrelin免疫阳性细胞在生殖系统中分布部位、含量及细胞形态等方面的研究，为今后ghrelin在食蟹猴体内的功能研究奠定形态学基础。免疫组化染色发现，ghrelin阳性细胞在食蟹猴的生殖系统中有分布。Ghrelin免疫阳性细胞被染为棕色到棕黑色，主要分布于睾丸、附睾及输精管中，精囊腺中无ghrelin阳性细胞分布。Ghrelin阳性细胞在组织中多呈散在分布。细胞大小不一、形态各异，多呈圆形、卵圆形、锥体形 ...
李鑫 1 +7 more
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, 2001 一种脂质分子集合体形状测定器，具有一贮放被测脂质分子集合体试样的液体槽、在液体槽上下各设置的上、下偏光滤光片并且上述上、下偏光滤光片的各偏光面相互垂直，以及能使液体槽中试样旋转的搅拌装置。用这种测定器可快捷地判定脂质分子集合体形状，可广泛用于医疗临床和工业生产制备脂质集合体时采用 ...
李雪驼, 徐和利, 广田真雄
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Reconceptualizing Language Teacher Well‐Being: An Ecological Role‐Interaction Model
International Journal of Applied Linguistics, EarlyView.ABSTRACT In recent years, research on language teacher well‐being (LTWB) has expanded rapidly. However, the conceptual relationship between general teacher well‐being (TWB) and LTWB remains insufficiently theorized, particularly in contexts where teachers simultaneously occupy subject‐specific and general education roles.
Misato Saunders +2 more
wiley +1 more source
四川大学学报. 自然科学版, 2001 作者应用分形理论研究了超高强度钢D6AC断口的分形维数DH与断裂韧性的关系，并按测定DH的数字图象法原理，试验得出试样的断裂韧性与分形维数DH成正相关，从物理角度解释了断口分形维数与材料性能之间的关系.可为分形理论拓宽其应用提供基本依据.
叶瑞英, 马红
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New Phytologist, EarlyView.Phylogenetic distance of host does not explain phenotypic differences of Meloidogyne incognita parasitism at 25 dpi. Summary The plant–parasitic nematode Meloidogyne incognita is the pathogen with the broadest host range among all known biotrophic interactions.
Victor Hugo Moura de Souza +11 more
wiley +1 more source
Coalition Breakdown and Subsystem Exit
Policy Studies Journal, EarlyView.ABSTRACT Why actors choose to work together (or not) to advance policy has been the central area of inquiry within the Advocacy Coalition Framework (ACF). Existing research has mainly emphasized the pathway towards coalition formation and evolution, underscoring the stable patterns of allies and opponents observable in policy processes over a decade or
Charlie F. Thompson
wiley +1 more source
Gaoya 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
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, 2018 超分子形状记忆水凝胶(SSMHs)是一类利用超分子作用或动态共价键作为分子开关来固定临时形状,并能在特定的刺激下恢复初始形状的高分子水凝胶.本文简要介绍了SSMHs的定义和发展历程,总结了利用不同种类的可逆作用构建SSMHs的最新进展,并扩展介绍了具有多重形状记忆效应和多功能的SSMHs.最后 ...
路伟, 陈涛, 张佳玮, 简钰坤
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Equine 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