Results 31 to 40 of about 1,717,025 (167)
Multi‐Functional S‐HA/ASTA NPs Coating on Biodegradable ZE21B Alloy for Cerebrovascular Applications
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Magnesium (Mg) and its alloys have attracted extensive attention of researchers in the field of cerebrovascular implants due to their good mechanical properties and biosafety. However, rapid degradation and delayed endothelialization pose challenges. To address these issues, this study introduces a multifunctional composite coating.
Aqeela Yasin +4 more
wiley +1 more source
Shuitu Baochi Xuebao, 2007 采用盆栽实验,研究了在模拟酸雨、镍单一或复合污染的红壤中,莴笋的生长和叶片中抗氧化酶活性、活性氧和丙二醛含量的变化。结果表明,单一酸雨污染或酸雨与25 mg/kg镍的复合污染对植株生长无明显影响;酸雨增强了50-100 mg/kg镍对莴笋生长的抑制效应。复合污染下,酸雨为pH4.5时,莴笋叶片超氧化物歧化酶（SOD）、过氧化氢酶（CAT）的总体活性较单一镍污染高,而酸雨为pH3.5时则两者活性降低。复合污染下,叶片过氧化物酶（POD）活性升高,抗坏血酸过氧化物酶（APX）活性降低,且随酸雨pH降低 ...
王海华, 彭喜旭, 严明理, 冯涛
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT This study elucidates the oxidation mechanisms governing Y/Hf‐doped AlCoCrFeNiTi high‐entropy alloys (HEAs) and reveals the pivotal role of fabrication processes in dictating high‐temperature oxidation behavior. We demonstrate that casting and spark plasma sintering (SPS) promote Y/Hf segregation, resulting in heterogeneous oxide formation and
Huaqing Yi +5 more
wiley +1 more source
四川大学学报. 自然科学版, 2009 采用高浓度聚乙二醇胁迫模拟干旱的方法,研究比较了麻疯树幼苗不同组织根和叶对胁迫的应答变化.结果表明,麻疯树幼苗根和叶对胁迫都产生明显应答,二者组织中相对含水量都明显下降,活性氧、可溶性糖、脯氨酸和丙二醛的含量持续增加,抗坏血酸含量呈现先增加后降低的趋势,但同期上述指标变化幅度都不一样.在整个胁迫期间,根和叶的抗氧化酶系统变化不一致,超氧化物歧化酶、过氧化氢酶、过氧化物酶和抗坏血酸还原酶活性的应答启动时间、活性变化幅度和应答持续时间也呈现一定的差异.但是,在整个胁迫处理期 ...
庄国庆 +4 more
doaj
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
Zhongguo shiyan zhenduanxue, 2016 目的观察阿特拉津（ATR）处理后小鼠心脏组织中过氧化产物的含量及Nrf2信号通路的活化,探讨ATR导致的心脏组织氧化应激损伤及保护机制。方法以玉米油溶解ATR,将32只雌性BALB/C小鼠随机分为0mg/kg、5mg/kg、25mg/kg和125mg/kg ATR剂量组,灌胃处理28d,于第29d处死小鼠取心脏组织匀浆并提取总蛋白,生化和Western blot方法检测心肌组织中过氧化产物含量、Nrf2信号通路相关蛋白的表达及抗氧化酶活性。结果ATR暴露小鼠心肌组织中NO、MDA含量增高 ...
陈俊宇 +5 more
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
, 2010 本发明涉及一种强抗氧化活性的组合物，包括仿刺参多肽和香菇多糖，它们间的质量比是1：1-100。采用南京建成生物工程研究所试剂盒（T-AOC）测定酶解液总抗氧化活性。结果发现：木瓜蛋白酶水解后的仿刺参酶解液抗氧化活性明显增强，由最初的10.08单位/mg蛋白增至27.59单位/mg蛋白；将无抗氧化活性的香菇多糖浸提液按照不同比例和仿刺参酶解液混合后，组合物的抗氧化活性可进一步提升。当仿刺参酶解液与香菇多糖浸提液体积比为1：4时，抗氧化活性达到最高值84.09单位/mg蛋白，相应对照组的抗氧化活性则为47 ...
陈爱芹, 李成华, 秦松, 夏传海
core
联合抗氧化微量营养素对T1DM小鼠心、脑、肾、肝组织氧化应激状态的影响
Zhongguo shiyan zhenduanxue, 2007 目的比较不同抗氧化微量营养素组合对实验性糖尿病小鼠心、脑、肾、肝组织氧化应激状态的干预作用,为应用抗氧化微量营养素防止糖尿病合并症提供科学依据。方法应用MLDS方法制备小鼠T1DM模型,分别添加4种（Se、VE、V、Cr）或7种（Se、VE、V、Cr、VC、烟酰胺、赖氨酸）抗氧化微量营养素,比较不同抗氧化微量营养素组合对糖尿病时心、脑、肾、肝组织抗氧化酶GSH-Px、SOD活性及自由基代谢产物MDA的影响。结果联合添加微量营养素的两组糖尿病小鼠心、脑、肾、肝组织GSH-Px、SOD活性不同程度地明显增高,
宋旸 +6 more
doaj
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Nanozymes have attracted considerable attention in cancer therapy due to their adjustable enzyme activity and high catalytic efficiency. However, they still face a major challenge from tumor metastasis. In this work, endogenous/exogenous dual‐responsive bimetallic hollow PdRu (termed HPdRu) nanozymes were prepared.
Nan‐Nan Zheng, Xin Hu, Jun‐Qing Hu
wiley +1 more source