Results 31 to 40 of about 132,304 (153)
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Infected bone defects represent a dual therapeutic challenge demanding concurrent infection inhibition and osteogenesis promotion. Systemic antibiotic administration is taken as a classical treatment protocol but often yields inadequate local antibiotic concentrations and delayed bone repair.
Xucai Wang +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Lignin is a natural non‐toxic polyphenolic macromolecule, which shows inherent antioxidant and broad‐spectrum antibacterial activities. However, due to the low content and the high bond dissociation energy of phenolic hydroxyl groups (Ar‐O·H), its antioxidant and antibacterial activities are relatively weak, which limits its application as a ...
Meiling Han +10 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2007 目的探讨土鳖虫溶栓酶的抗凝血和抗血栓作用。方法给药后检测凝血时间、凝血酶原时间、血纤维蛋白原含量、血凝块溶解率。用体内、外血栓形成溶解实验检测抗血栓作用。结果土鳖虫溶栓酶0.25、0.5、1.0 mg/kg能明显延长小鼠凝血时间、大鼠凝血酶原时间,降低大鼠血纤维蛋白原含量,增加血凝块溶解率,延长大鼠颈动脉血栓形成的时间,缩短大鼠体外血栓长度,减轻血栓的湿重及干重。结论土鳖虫溶栓酶具有抗凝血和抗血栓作用。
王征, 陈晓光, 吴岩
doaj
Jianzhu Gangjiegou Jinzhan, 2022 为研究钢管混凝土结构抗连续倒塌与抗震综合防御能力，采用有限元软件ABAQUS建立了6个不同连接形式的钢管混凝土节点有限元模型，在合理选取钢材和混凝土材料本构模型的基础上，对比分析竖向荷载作用下各节点抗连续倒塌破坏特征，获得各类节点的抗倒塌承载力和破坏特征。在此基础上，计算各节点在水平低周往复荷载作用下的滞回性能，获得其承载力曲线、刚度退化、延性、耗能能力等抗震性能指标。研究结果表明：竖向荷载作用下，栓焊混合外环板式和内隔板式节点的抗连续倒塌能力较好；水平往复荷载作用下 ...
王景玄, 王文琦
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Directed energy deposition (DED) is an effective method to process complex components with high efficiency, owing to its significant advantage of material saving and features of microarea metallurgy and rapid solidification. This study presents a nano‐Ta‐optimized Ti‐45Al‐8Nb (at%)‐based alloy synthesized via DED. The prepared TiAl‐based alloy
Yi Song +8 more
wiley +1 more source
Linchuang shenzangbing zazhi, 2021 目的观察高剂量枸橼酸进行分段体外抗凝高通量血液透析的抗凝效果及安全性。方法对2020年1月至2020年11月期间24例有高危出血风险的维持性血液透析患者行4%枸橼酸三钠抗凝治疗67例次,分别在透析器前后以200 mL/h的速度输入4%枸橼酸三钠,观察患者的临床不良反应、抗凝效果,比较透析前、透析2 h和透析后体内、体外血液pH值、钙离子、总钙、钠离子、碱剩余、碳酸氢根浓度的变化。结果 67例次的高剂量枸橼酸抗凝治疗各有1例分别因跨膜压、静脉压升高提前40 min和30 min结束治疗 ...
Ke Xiao-su, Li Yu-wei, Luo Li-xia
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT To address the demand for high‐temperature stability, broadband strong absorption, and multifunctional integration of electromagnetic wave absorbing materials in complex service environments, lightweight molybdenum disulfide (MoS2) decorated silicon carbide (SiC) nanofiber composite aerogels with a directional layered interconnected structure ...
Zhi Song +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Bone restoration is often hindered by the spatiotemporal dysregulation of immune and regenerative signals. Conventional bio‐inert implants, providing only passive support, fail to modulate this microenvironment, leading to infections and poor healing.
Zhizhong Sun +8 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2013 提出一种新型的预应力混凝土叠合板——波纹钢腹板预应力混凝土叠合板（PCCW板）,通过对7块跨度为2700mm的PCCW板进行单向均布加载试验,研究了PCCW板的抗弯刚度、抗弯承载力、抗裂性能、钢与混凝土协同工作的整体受力性能。试验结果表明:PCCW板的抗弯承载力和抗弯刚度均较高,完全能满足施工阶段的要求。通过参数比较分析,发现波纹钢腹板厚度、上部混凝土翼缘高度、波纹腹板开孔均对PCCW板的抗弯性能有影响。
侯和涛 +5 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The growing deployment of high‐frequency electronic systems has intensified the demand for high‐performance microwave absorption materials. In this work, we developed La‐V co‐substituted barium hexaferrites, Ba1‐xLaxFe11.9V0.1O19 (BLFVO), via a sol‐gel route.
Zhihui Yang +7 more
wiley +1 more source