Results 41 to 50 of about 106,751 (154)
Advances in Elemene Nanodelivery Systems: From Material Design to Disease Treatment
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Elemene (ELE) is a bioactive sesquiterpenoid extracted from traditional Chinese herbs, demonstrating broad‐spectrum antitumor, anti‐inflammatory, and analgesic properties with significant therapeutic potential. However, its clinical utility is constrained by inherent physicochemical limitations, including volatility and hydrophobicity, which ...
Xiao Wang +9 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2014 介绍了一种在梁腹板及下翼缘开孔,并在翼缘开孔处安装摩擦阻尼器的新型节点。利用有限元软件ANSYS分析了铝合金滑动板与梁下翼缘之间的摩擦系数、开孔宽度、开孔距柱翼缘距离和开孔高度等参数变化对新型节点抗震性能的影响,并对各系列新型节点试件与传统节点试件的抗震性能进行了分析比较。分析结果表明:各系列新型节点试件与传统节点试件的滞回曲线都比较饱满,表现出了较好的滞回性能。但各系列新型节点试件的延性及耗能能力要远远优于传统节点试件,且各系列新型节点试件都能够迫使塑性铰远离节点区,而出现在开孔处 ...
毛剑, 郑宏
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The limited osteogenic capacity of magnesium phosphate cement (MPC) has constrained its biomedical applications, underscoring the necessity to develop MPC with enhanced physical properties and bone‐forming capabilities. In this study, a multifunctional MPC system was developed by incorporating zoledronic acid‐loaded near‐infrared (NIR ...
Bin Wang +8 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2022 为了研究腹板开椭圆孔耗能支撑的滞回性能，进行了3个支撑试件的低周往复加载试验，研究支撑长细比和耗能腹板长度对这种支撑耗能能力和滞回性能的影响，得到试件的滞回曲线、骨架曲线、刚度退化曲线、延性系数、等效黏滞阻尼比等。试验结果表明：在低周往复荷载作用下，腹板开椭圆孔耗能支撑依靠腹板开孔板件进入塑性耗散能量。耗能支撑滞回曲线饱满，耗能能力强，初始刚度较高。孔间板件断裂破坏导致耗能支撑试件失效，试件呈现延性破坏。试验过程中，中部工字钢保持弹性状态，没有进入塑性。相同长细比下耗能腹板的长度越长 ...
沈婷悦, 赵宝成
doaj
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Although magnetic carbon materials possess significant potential in the field of electromagnetic wave absorption (EWA) due to the synergistic effect of multiple attenuation mechanisms, the currently reported magnetic carbon EWA materials face some challenges, such as high cost, low yield, and easy agglomeration of the magnetic component ...
Bo Jiang +9 more
wiley +1 more source
, 2015 本发明提供一种开孔聚合物泡沫材料的制备方法，其包括如下步骤：a称取聚丙烯100重量份，热塑性弹性体10～70重量份，成核剂0.1～5重量份，单甘酯0.1～2重量份；b将所述聚丙烯、热塑性弹性体、成核剂和单甘酯均匀混合得到一混合物，再将该混合物加入第一挤出机内，熔融挤出得到预混物；c将所述预混物加入第二挤出机内，并在第二挤出机的螺杆的1-5～1-3处通入超临界态的二氧化碳，挤出发泡得到开孔聚合物泡沫材料。本发明还提供一种开孔聚合物泡沫材料 ...
吴飞 +4 more
core
, 2018 采用CFD数值模拟方法开展了基于桨尖开孔的旋翼桨尖涡抑制研究,重点分析了开孔位置、数目、直径等参数对桨尖涡结构和旋翼气动性能的影响。旋翼流场数值模拟通过求解旋转坐标系下的Navier-Stokes方程,采用格点格式的有限体积法,结合非结构重叠网格技术。无黏通量计算采用二阶中心格式加人工耗散,湍流模型采用Spalart-Allmaras模型。数值研究表明:桨尖开孔的位置对桨尖涡削弱效果的影响很小;开孔数目越多,孔径越大,桨尖涡的削弱效果越好;开孔旋翼的升力系数较无开孔构型小幅增加,而功率系数则较大幅度增加。
朱呈祥 +4 more
core
野生动物学报, 1993 鸟类的佼佼者——孔雀,不仅有讨人喜欢的绚丽多彩羽毛。开屏一绝更是欣赏者向往所在,但对孔雀为什么开屏,却有很多不同的说法。其实,孔雀的开屏主要出于求偶,因开屏属孔雀之间求婚时特定礼仪,又是它们交配前的准备动作,这同鹤类求婚时的起舞,鸡类求婚时的抖翅行为一样,都是它们各自求偶时固有礼仪。因此,越是到了繁殖季节,孔雀的开屏行为相对越频繁 ...
朱蔚光, 阎福英
doaj
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT The design of nanoparticles confined in hollow N‐doped carbon structures is crucial for improving the oxygen reduction reaction (ORR) kinetics, yet achieving this remains a significant challenge. In this work, hollow porous nitrogen‐doped carbon encapsulated FeP/Fe2P (H‐FeP/Fe2P) were successfully constructed via a templating method combined ...
Li‐Xia Wang +8 more
wiley +1 more source