Results 31 to 40 of about 32,077 (249)
Rare Metals, EarlyView.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
wiley +1 more source
野生动物学报, 2020 本文采用免疫组织化学染色方法，探讨ghrelin在雄性食蟹猴生殖系统内的分布定位。通过对ghrelin免疫阳性细胞在生殖系统中分布部位、含量及细胞形态等方面的研究，为今后ghrelin在食蟹猴体内的功能研究奠定形态学基础。免疫组化染色发现，ghrelin阳性细胞在食蟹猴的生殖系统中有分布。Ghrelin免疫阳性细胞被染为棕色到棕黑色，主要分布于睾丸、附睾及输精管中，精囊腺中无ghrelin阳性细胞分布。Ghrelin阳性细胞在组织中多呈散在分布。细胞大小不一、形态各异，多呈圆形、卵圆形、锥体形 ...
李鑫 1 +7 more
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Rare Metals, EarlyView.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
wiley +1 more source
Shuitu Baochi Xuebao, 2016 以广东省五华县典型崩岗洪积扇为研究对象，通过GPS RTK获取从扇顶到扇缘64个采样点的坐标、高程信息，并采集土壤样品进行理化性质的测定及分析，通过分形理论、回归分析和地统计学相结合的方法研究洪积扇土壤分形特征和空间变异规律，以及分形维数与土壤颗粒组成和养分含量的相关关系。结果表明：土壤颗粒组成和养分含量具有明显分异特征，且与分形维数的空间分布特征呈现出一定的规律性。从扇顶到扇缘，土壤粉粒、粘粒质量分数和养分含量逐渐增加，与分形维数呈显著正相关线性关系，砂粒质量分数则逐渐减少 ...
马 媛 +5 more
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On plurigenera of normal isolated singularities [PDF]
, 1981 Thesis--University of Tsukuba, D.Sc.(B), no. 50, 1981.
Watanabe Kimio, 渡辺 公夫
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Rare Metals, EarlyView.ABSTRACT Chlorination roasting has emerged as a promising pyrometallurgical strategy for the selective recovery of lithium from spent lithium‐ion batteries (LIBs). In this study, a natural roasting agent, seawater‐derived chlorides, was employed to selectively extract lithium from spent LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode. MgCl2·6H2O, a main component
Bei‐Lei Zhang +7 more
wiley +1 more source
Shuitu Baochi Xuebao, 2003 运用分形模型对不同紫色母质发育的土壤团聚体特征进行研究,结果表明:土壤团聚体粒径分布的分形维数与土壤团聚体结构破坏率存在极显著正相关(r=0.961**,n=8),与>0.25mm水稳性团聚体含量存在极显著负相关(r=-0.958**,n=8);不同紫色母质发育的土壤团聚体粒径分布的分形维数存在差异,棕紫泥土壤团聚体粒径分布的分形维数最高,暗紫泥土壤团聚体粒径分布的分形维数最低。土壤团聚体粒径分布的分形维数是评价土壤物理肥力和土壤抗蚀性的一个新指标。
骆东奇 侯春霞 魏朝富 谢德体 朱波
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Topological Aspects of an Antisymmetric Background Field on Orbifolds [PDF]
, 1996 この論文は国立情報学研究所の電子図書館事業により電子化されました ...
橘, 基
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Rare Metals, EarlyView.ABSTRACT The transformative potential of gallium nitride high electron mobility transistors (GaN HEMTs) in advancing carbon‐neutral power systems remains bottlenecked by contact resistance (Rc) at the metal–semiconductor (M‐S) interface, a critical determinant of switching losses and frequency response.
Ji‐Zhou Zhang +8 more
wiley +1 more source
Shiyou jixie, 2015 采用有限元仿真方法，根据结构失稳理论分析六级分支井分岔装置在20 MPa内压作用下相贯线部分出现鼓包变形问题。首先，模拟双相钢和IF钢不同壁厚、管径的六级分支井分岔装置在内压作用下的变形及应力分布，并测量分岔装置最大鼓包变形量与位置。然后，通过未加压分岔装置相贯线截面与加压变形后相同位置截面对比分析，发现相贯线截面存在的结构几何缺陷与厚度缺陷导致分岔装置变形，得出六级分支井分岔装置结构失稳极值点位置和导致最大鼓包变形的最大几何缺陷；在内压作用下 ...
邓治国 +7 more
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