Results 1 to 10 of about 19,769 (116)
Jianzhu Gangjiegou Jinzhan, 2023 为研究窄翼缘PEC中长柱轴压整体稳定性能，设计制作9根组合长细比介于76~141（正则化长细比介于0.84~1.55）的窄翼缘PEC中长柱，进行轴压整体稳定性能试验。研究窄翼缘PEC中长柱的初始弯曲、长细比、混凝土强度等因素对其破坏模式和轴压整体稳定承载力的影响。试验结果表明，窄翼缘PEC中长柱在轴压荷载下的破坏模式表现为绕弱轴的弯曲失稳，长细比和初始弯曲显著影响试件的破坏模式和极限承载力。当试件的正则化长细比大于1.0，初始弯曲大于L/1 000时，试件的破坏模式表现为整体极值点失稳 ...
张文轩 +5 more
doaj
Jianzhu Gangjiegou Jinzhan, 2023 为研究冷弯厚壁卷边槽钢在轴向滞回荷载作用下的抗震性能，选取了9根壁厚分别为3 mm、8 mm、12 mm和16 mm的冷弯卷边槽钢进行轴向滞回加载试验。通过试验得到荷载-位移滞回曲线，研究长细比、宽厚比、钢材强度等因素对构件抗震性能的影响，并讨论了黏滞阻尼系数、延性系数、刚度退化等问题。研究结果表明：宽厚比、长细比会影响构件的破坏模式，而不同破坏模式又影响构件的抗震性能，如宽厚比或长细比较大的构件会出现不同的失稳破坏模式，导致其拉、压区承载力峰值相差较大，滞回曲线不饱满，总体抗震性能较差；反之 ...
付小超, 温东辉, 李元齐
doaj
Jianzhu Gangjiegou Jinzhan, 2021 带直角六边形钢管混凝土柱具有表面平整和抗震性能好的优点,已被应用于实际工程中。为进行该类结构的非线性抗震分析,基于有限元法研究了其滞回性能,并开展了参数分析,主要参数包括:含钢率、混凝土强度、钢材强度、轴压比和长细比。分析结果表明:该类组合构件的承载力随着含钢率和钢材强度的增大而提高,随着长细比和轴压比的增大而降低;抗弯刚度随着含钢率的增大而增大,随着长细比的增大而减小;长细比和轴压比对骨架曲线形状的影响较大;骨架曲线下降段刚度随着轴压比和混凝土强度的增大而增大,随着长细比的增大而减小 ...
王志滨, 吴扬杭, 王巧艺, 余鑫
doaj
Jianzhu Gangjiegou Jinzhan, 2023 利用ABAQUS有限元软件对薄壁不锈钢圆管轴压柱的轴压稳定性能进行了数值模拟，并考察了材料性能参数、材料各向异性、初始几何缺陷、径厚比、长细比等因素的影响。分析结果表明：材料各向异性和初始局部缺陷的取值对构件轴压稳定性能影响较小，可以忽略；初始整体缺陷取值对构件轴压稳定性能影响较大，有限元模型中取构件长度的1/2 000可较为准确地模拟试验结果；材料性能参数、径厚比和长细比对构件轴压稳定性能影响较大。通过对不同径厚比构件的分析，提出了防止构件发生局部屈曲的容许径厚比建议公式 ...
朱浩川, 许友武, 姚谏
doaj
Zhejiang Daxue xuebao. Lixue ban, 2012 苔藓植物的园艺园林应用日益受到重视，细叶小羽藓(Haplocladium micro phyllum)是一种交织生长、色泽翠绿、越冬能力强、观赏价值较高的林地野生苔藓资源.以黄泥土、黄砂土、白泥土为基质在光照培养箱内对细叶小羽藓进行栽培，利用盖度、分枝长度、分枝数、生物量、相对含水量及光合色素质量比等指标评价了细叶小羽藓生长发育状况，探讨了不同土壤类型对细叶小羽藓生长发育的影响.试验表明，黄泥土栽培细叶小羽藓生长效果最佳，栽培50 d其盖度可达84.33%，分枝长度为4.80 cm ...
ZHANGNan(张楠) +2 more
doaj +1 more source
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Esophageal squamous cell carcinoma (ESCC) remains associated with frequent local recurrence and distant metastasis despite advances in radiochemotherapy and immunotherapy, highlighting the need for therapeutic strategies that improve both local tumor control and systemic antitumor immune responses.
Dongdong Wang +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Esophageal cancer is the seventh leading cause of cancer death, and the energy depletion in cancer cells can be achieved through synergistic therapy. The integration of sonodynamic therapy and chemotherapy offers a promising comprehensive treatment strategy for esophageal cancer.
Mengya Li +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Precipitation of isothermal ω phase is an effective way to strengthen the metastable β‐Ti alloys but generally severely embrittles the materials by suppressing stress‐induced martensitic transformation and deformation twinning. Here, we architect heterogeneous structures with tailored ω phase in a metastable β‐Ti‐20Zr‐12Nb‐2Sn alloy via ...
Yang Liu +6 more
wiley +1 more source
Organ‐specific ozone and nitrogen legacies strengthen substrate control over litter decomposition
Functional Ecology, Volume 40, Issue 8, Page 2548-2559, August 2026.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
International Journal of Applied Linguistics, Volume 36, Issue 3, Page 2808-2821, August 2026.ABSTRACT This study investigates how the learner‐related factors of language dominance, encompassing language history, proficiency, use, and attitude, modulate congruency effects in multi‐word unit (MWU) processing among early bilinguals. Seventy Cantonese–Putonghua bilinguals completed lexical decision tasks measuring reaction time and accuracy for ...
Mingjia Cai, Yuan Liang
wiley +1 more source