Results 111 to 120 of about 138,305 (254)
Rare Metals, EarlyView.ABSTRACT SnTe is considered a potential alternative to PbTe for thermoelectric applications. However, excessive carrier concentration and thermal conductivity result in poor thermoelectric performance. Herein, p‐type SnTe‐based materials Sn0.8‐xMn0.1Pb0.1SbxTe were synthesized, and the combined effects of Sb, Mn, and Pb were systematically investigated.
Jun‐Xiang Zhang +10 more
wiley +1 more source
Gaoya dianqi, 2018 为了分离绝缘纸老化程度和水分对频域介电谱的影响及提高变压器绝缘纸老化程度和水分含量评估精度,文中通过开展加速热老化试验制备了老化程度和含水量均不相同的5组油纸绝缘试样,并对各组试样进行tanδ频谱测试。试验结果表明,在10-310-1Hz频段内,tanδ曲线随绝缘纸老化程度增加而上升;在10-3102Hz频段内tanδ曲线随绝缘纸含水量增大显著上升,在特征频段10-1102Hz和10-310-1Hz内求取tanδ曲线对频率的积分值Sm和SDP分别作为表征水分含量和老化程度的特征量 ...
曹建军, 隋彬, 杨飞豹, 尹小兵
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Induced Pluripotent Stem Cell-derived Mesenchymal Stem Cells Improve Crohn’s Disease via Altered T Cell Differentiation [PDF]
, 2015 背景&目的：目前，有许多研究表明，无论是脂肪来源还是骨髓来源的的间充质干细胞都对克罗恩病和溃疡性结肠病实验室模型有益。甚至有些临床的一期实验，已经证明了间充质干细胞可以缓解炎症性肠病的临床症状和组织病理学损伤。然而，限制间充质干细胞临床研究与应用的最主要原因就是间充质干细胞在组织中的含量有限，很难得到充足的干细胞，满足临床研究和应用的需求，并且提取细胞的过程也会给病人或者细胞捐献者带来极大的痛苦。在此，我们的研究目的主要是探讨另一种新型来源的间充质干细胞即诱导多能干细胞来源的间充质干细胞（iPSC ...
芦方娜
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A High Capacity‐Long Cycling Concurrent Strategy of Ti3C2/MgH2 for Lithium Storage
Rare Metals, EarlyView.ABSTRACT The excellent electrical conductivity and superior cycling stability render Ti3C2 MXene a promising Li ion battery anode. Nevertheless, the practical implementation of Ti3C2 MXene in commercial applications faces significant challenges, predominantly due to the low specific capacity.
Tingting Xu +9 more
wiley +1 more source
5-Aza联合低浓度HS分阶段诱导人和大鼠BMMSC 向肌细胞分化的研究
Zhongshan Daxue xuebao. Yixue kexue ban, 2008 【目的】 评价5-Aza联合20 mL/L HS方案诱导人和大鼠BMMSC向肌细胞分化的可行性,揭示BMMSC肌分化 的机制,尝试建立一种简便?有效?稳定的诱导BMMSC肌分化方法.【方法】 首先分离纯化SD大鼠BMMSC,显微镜下 观察人和大鼠BMMSC生长和形态.接着,应用5-Aza联合20 mL/L HS诱导BMMSC向肌细胞分化,通过免疫细胞化学和 RT-PCR方法分别检测肌标志性分子基因表达情况.【结果】 ①5-Aza联合20 mL/L HS诱导人和大鼠BMMSC向肌系 分化效能截然不同 ...
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Zhongguo shiyan zhenduanxue, 2007 目的研究人骨髓间充质干细胞（mesenchymal stem cells,MSCs）向神经细胞分化的可能性。方法利用Per-coll梯度分离及贴壁筛选法分离培养和扩增MSCs;利用bFGF、化学诱导剂DMSO和BHA联合诱导MSCs向神经元转化,观察分化过程中细胞形态的变化,利用免疫细胞化学和RT-PCR方法检测神经元特异性标志物的表达情况。结果经Percoll梯度分离及贴壁筛选法获得了纯度较高的人MSCs,诱导分化后的细胞呈现双极、多极和锥形的典型神经元细胞的形态 ...
辛颖, 李玉林, 张丽红
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Rare Metals, EarlyView.ABSTRACT Transition metal‐based amorphous/crystalline (a/c) heterostructured catalysts have garnered significant attention due to their exceptional activity, stability, and cost‐effectiveness. However, the precise synergistic regulation of interfacial composition and phase states remains challenging.
Haoran Li +3 more
wiley +1 more source
Novel Non‐Equimolar High‐Entropy Zirconates With Superior Thermophysical Properties
Rare Metals, EarlyView.ABSTRACT Rare‐earth zirconates (RE2Zr2O7) are promising candidates for topcoat materials in thermal barrier coatings (TBCs). However, their practical application in TBCs is limited by poor fracture toughness and low thermal expansion coefficient (TEC).
Taoyi Lu +7 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2004 【目的】探讨体外诱导成人骨髓间质干细胞(humanmesenchymalstemcells,hMSC)向神经元样细胞分化过程中分化与凋亡的关系,为进一步研究延长神经元样细胞的存活时间提供基础。【方法】从成人骨髓分离MSC,培养扩增。以β-巯基乙醇和参芪液诱导分化,于诱导后1、3、5h分别进行免疫组化鉴定神经元烯醇化酶(NSE)、神经丝蛋白(NF)、胶质纤维酸性蛋白(GFAP)的表达,计数神经元样细胞,计算分化率。采用TUNEL方法分别检测诱导后1、3、5h的细胞凋亡率,并分析两者是否相关。【结果 ...
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