Results 31 to 40 of about 13,047 (166)
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
Basic Research on Boron and Main Metallic Impurities Removal from Silicon Using Slag Refining Followed by Acid Leaching [PDF]
, 2014 目前，硅是光伏产业中应用最为广泛的一种材料，其纯度要求达到99.9999%（6N），其中，硼杂质的含量要严格控制在0.3ppmw以下。冶金法作为一种高效、绿色、低成本的提纯技术，适合我国光伏产业发展的需求，其中，造渣精炼是冶金法中一种有效的除硼方法。 本论文采用造渣精炼法去除工业硅中硼杂质，研究渣剂和工艺对除硼的影响，得出硼杂质的去除机理和动力学模型。此外，结合酸洗工艺去除硅中金属杂质，研究其浸出行为和动力学模型。最后，对造渣过程中产生的废渣进行回收再利用。本论文的研究成果 ...
方明
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Influence of Ultra-low Temperature Thermal Fatigue on Microstructure and Mechanical Property of Z2CND18.12 Austenitic Stainless Steel [PDF]
At present, ice plug technology is often used in the maintenance process of nuclear power plants to isolate part of the main pipeline and use refrigerant such as liquid nitrogen for ultra-low temperature treatment, so that the internal fluid is frozen to
ZHANG Yunhao1, , MA Yan1, ZHANG Tao2, LI Shijiang1, JIANG Xingyu1, LAN Yuning1, ZHU Huiping1, ZHOU Du2, TONG Zhenfeng1,
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Internal oxidation has been identified as an effective method for enhancing the strength of AgMg alloys. However, the concurrent occurrence of embrittlement remains inadequately understood, thus limiting their broader application. This study investigates the oxidation behavior of AgMg alloys with Mg concentrations ranging from 1 at% to 7 at ...
Hai‐Cheng Zhu +12 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang +9 more
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Effect of heat input on the microstructure and mechanical properties of TIG welded-brazed magnesium / steel joints [PDF]
, 2016 A tungsten inert gas(TIG) welding-brazing technology using an Mg-based filler was developed for joining Mg alloys to steel. The effects of heat input on the microstructure and mechanical properties of Mg/steel joints were investigated.
HONG Miao, LIANG Xue-bo, YUAN Xin-jian
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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
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Dual‐Stage Heat Treatment for Enhanced Hydrogen Storage Properties of Mg−Ni−Y Alloys
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Mg−Ni−Y alloy is considered to be one of the most promising hydrogen storage materials, but its high dehydrogenation energy barrier hinders its practical application. A dual‐stage heat treatment (490°C × 4 h + 550°C × 4 h) is applied to optimize the microstructure and hydrogen storage performance of a vacuum‐melted Mg94Ni3Y3 alloy.
You Lv +6 more
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Zhongguo shiyan zhenduanxue, 2018 目的探讨CD200在结肠癌组织中的表达以及在肿瘤微环境中的作用。方法应用组织芯片技术,对43例结肠癌组织以及26例癌旁正常组织CD200的表达进行对比研究。结果结肠癌组织与癌旁正常组织中CD200的表达存在差异,癌组织中CD200表达强度及表达范围均显著高于正常组织（P=0.001）。结论 CD200在结肠癌组织中呈高表达,提示其在肿瘤微环境免疫调节中具有潜在的价值。
刘俊婷 +4 more
doaj
Legislative Attention and Nonprofit Efficiency: A Link Across Sectoral Boundaries
Policy Studies Journal, Volume 54, Issue 1, February 2026.ABSTRACT Government attention matters for nonprofit management and nonprofit‐government interactions. This study focuses on legislative attention, an important yet less‐studied aspect of government attention in public policy research, and examines its impact on nonprofit efficiency.
Yuhao Ba, Jessica Berrett, Jason Coupet
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