Results 51 to 60 of about 511,048 (149)
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Lung cancer is one of the most common and deadly malignancies worldwide. Although immune checkpoint inhibitors, including PD‐1/PD‐L1 blockers, have benefited a subset of patients, response rates remain limited, and recurrence is frequent because of the immunosuppressive tumor microenvironment (TME), characterized by hypoxia and dysregulated ...
Yi Ma +6 more
wiley +1 more source
野生动物学报, 2014 以麋鹿、獐、马鹿、梅花鹿、白唇鹿和狍6种鹿科动物的冬季上毛为研究对象,通过对背中部上毛长度、细度、髓质指数、鳞片长宽比、横向单位长度(200 μm)的鳞片数量等性状指标的比较结果表明:这6种鹿科动物的冬季上毛细度在300～800 μm之间,上毛长度在37～65 mm之间,髓质指数在96.2%～97.5%之间,横向单位长度(200 μm)的鳞片数量在2.5～3.8个之间,鳞片长宽比在0.2～0.6之间。其中白唇鹿的上毛细度在600 μm以上,高于其他5种动物; 马鹿的鳞片长宽比为0.5以上 ...
陈 辰 张 伟
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Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 806-814, June 2026.ABSTRACT Objective To investigate the incidence of pre‐eclampsia (PE) and the predictive performance of the Fetal Medicine Foundation (FMF) first‐trimester PE screening algorithm across pregnancies conceived using assisted reproductive technology (ART), after ovulation induction (OI) and through spontaneous conception (SC).
A. S. L. Kjaer +23 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Environmental pollution across water, air, and soil systems poses escalating threats to human health and ecosystem stability, driven by heavy metals, persistent organic pollutants, particulate matter (PM), bioaerosols, and toxic gases. Conventional remediation technologies often suffer from limited selectivity, insufficient efficiency, and the
Junjie Qi +6 more
wiley +1 more source
, 1999 本文用常规方法培养细胞，用环境扫描电镜观察细胞在微载体上的生长过程，包括细胞贴附阶段和生长增殖阶段细胞形貌及细胞数目变化。考察了接种密度、血清浓度、葡萄糖浓度等培养条件对细胞生长过程的影响，外加贴壁因子对细胞贴附铺展过程的影响。随接种密度的增大，细胞延迟期缩短，细胞比生长速率下降加快，细胞长满微载体表面所用的时间缩短，在没有接种上细胞的空微载体比例足够小的情况下，细胞的终密度基本相同。血清浓度通过对细胞贴附率的影响直接影响整个生长过程。外源纤粘连蛋白和层粘连蛋白在微载体表面的吸附使细胞铺展速度加快 ...
姜蕾
core
Aspect Ratio‐Controlled Chiral Nanostructures for Dual‐Mode Breast Cancer Theranostics
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Chiral CdSe/CdS quantum dots (QDs) have emerged as promising platforms for precise cancer diagnosis and therapy due to their unique optical properties and biological interactions. In this study, we systematically investigated the role of aspect ratio (AR) modulation in ultrathin‐shelled chiral CdSe/CdS dot‐in‐rods (DRs) on their performance in
Linxuan Wu +9 more
wiley +1 more source
, 2009 针对大长细比圆柱体的涡激振动问题,建立了柱体顺流向与横向耦合的涡激振动模型,在尾流振子模型的基础上,引入了柱体振动的加速度耦合项,同时考虑到柱体振动瞬时速度的变化,引入了非线性流体力模型.采用有限差分法求解柱体的振动方程,计算结果与实验结果的对比显示,该文模型能较好地模拟大长细比圆柱体涡激振动的重要特性,包括振动频率、振动模态、驻波与行波的特征等.柱体在顺流向的变形曲率与横向的变形曲率在同一量级 ...
王雷, 葛斐, 龙旭, 洪友士
core +1 more source
肝细胞生长因子对慢性肝损伤时肝部分切除术后肝再生和肝功能的影响
Zhongguo shiyan zhenduanxue, 2005 目的研究肝细胞生长因子对慢性肝损伤时肝部分切除术后肝再生和肝功能的影响。方法对慢性肝损伤模型SD大鼠行30%肝部分切除术,术后10d,经腹腔注射肝细胞生长因子,同时建立正常对照组。观察不同剂量肝细胞生长因子对肝再生,肝功能和肝储备功能的影响。结果实验组与对照组相比,AST,ALT,总胆固醇、动脉血酮体比具有显著的统计学意义 ...
左国杰 +4 more
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Zhongguo shiyan zhenduanxue, 2005 目的 比较不同消化酶对体外培养的原代乳鼠雪旺细胞的影响。方法 取1周龄SD乳鼠坐骨神经,分别用胰蛋白酶、胶原酶Ⅱ型、混合酶消化,相同方法及实验条件下进行雪旺细胞培养,观察细胞形态、计算2 4h贴壁活细胞百分比及MTT微量比色法比较细胞的生长增殖状况。结果 胰蛋白酶消化组细胞收获量相对最小,细胞损伤程度较大;胶原酶组细胞有一定程度损伤;混合酶组细胞收获量最大,细胞生长状态较好。结论 单纯使用胰蛋白酶或胶原酶消化对原代雪旺细胞的活性及增殖有一定影响,采用胰蛋白酶与胶原酶联合消化效果较好。
李春雨 +6 more
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Jianzhu Gangjiegou Jinzhan为研究内置T肋圆管钢桥墩在承受恒定竖向荷载和水平往复荷载作用下的极限承载力和延性性能。文中首先通过与既有试验结果对比，验证所采用有限元分析方法的准确性，然后对内置8根T肋圆管钢桥墩试件进行有限元建模分析，研究正则化径厚比、钢桥墩正则化长细比、纵向加劲肋正则化长细比、轴压比等参数对钢桥墩极限承载力与延性性能的影响规律；最后基于参数化分析结果提出了预测该类钢桥墩极限承载力和延性性能的计算公式。结果表明：随着正则化径厚比、钢桥墩正则化长细比、纵向加劲肋正则化长细比及轴压比的增大，钢桥墩顶部水平荷载 ...
上官城鑫, 高圣彬, 董江磊
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