Results 11 to 20 of about 1,143,025 (97)
, 2005 采用添加表面活性剂两步沉淀法制备了具有高表面铜相对浓度的超细甲醇合成催化剂：以组成为H2／CO／CO2／N2=66／27／3／4（体积比）的原料气对催化剂进行了活性评价。结果表明，该催化剂比传统并流沉淀法制备的铜基催化剂活性提高47．9％．比两步沉淀法和添加表面活性剂并流沉淀法制备的铜基催化剂活性分别提高9．3％和16．8％。利用SEM、XRD及XPS方法对催化剂的结构 ...
王铁军 +4 more
core +5 more sources
Journal of Diabetes, Volume 15, Issue 5, Page 397-408, May 2023., 2023 Highlights Neprilysin (NEP) inhibitors may lead to beneficial effects through inhibition of NEP, which involves impairment of glucose homeostasis through modulation of insulin resistance and the development of pancreatic β cell dysfunction as observed in type 2 diabetes mellitus.
Faisal Holil AlAnazi +8 more
wiley +1 more source
, 2021 本发明提供一种层状纳米异构沉淀硬化高熵合金的制备方法，包括如下步骤；将Cr、Co、Fe、N i、AI按预定质量百分数制作成高熵合金材料，然后在预定固溶高温下进行固溶处理；在预定热锻温度下对固溶处理后的高熵合金材料进行热锻处理，随后立即水冷至室温，再对其进行单一路径的等通道转角挤压；在预定加工温度下，对挤压后高熵合金材料进行多道次轧制，再进行冷却处理；然后进行时效处理，得到微观结构呈无析出拉长晶粒层片，与含高密度沉淀相的残余冷作硬化层片叠层耦合的形态，在宏观上无析出层片且沿加工方向呈非连续层状分布特征 ...
张杭州 +4 more
core +2 more sources
, 2004 采用传统共沉淀法和加表面活性剂改进共沉淀法制备了两种超细Cu／ZnO／Al2O3催化剂，并应用XRD，TEM对催化剂的结构和形貌进行了表征，同时用流动固定床微型反应器在3．0MPa和体积空速7600h^-1下考察了其催化合成气合成甲醇的活性．结果表明，改进共沉淀法制备的超细Cu／ZnO／Al2O3催化剂具有比传统共沉淀法制备的催化剂更细的粒径和更高的催化活性 ...
常杰, 阴秀丽, 付严, 汪俊锋
core +4 more sources
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The limited crack resistance of coarse grain boundaries and coarse interfaces leads to an incompatibility between high‐temperature strength and ductility in TiAl alloys. Tailoring stress‐oriented textures and multiscale heterogeneous interfaces can effectively impede crack propagation, thereby overcoming this trade‐off.
Kexuan Li +7 more
wiley +1 more source
Microstructure Tailoring of Laser Powder Bed Fused Nb521 Alloy Toward Strength‐Ductility Synergy
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Niobium‐based refractory alloys are promising candidates for high‐temperature aerospace structures, yet their limited ambient‐temperature ductility and poor processability remain major barriers to broader implementation. Here, Nb521 alloy was fabricated by laser powder bed fusion (LPBF), and the effects of processing conditions and subsequent ...
Lele Qin +7 more
wiley +1 more source
Organ‐specific ozone and nitrogen legacies strengthen substrate control over litter decomposition
Functional Ecology, Volume 40, Issue 8, Page 2548-2559, August 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Elevated tropospheric ozone (O3) and nitrogen (N) deposition are concurrent atmospheric changes that strongly influence terrestrial carbon cycling, yet their combined effects on below‐ground decomposition remain poorly understood.
Xiaofan Hou +8 more
wiley +1 more source
Recovering Critical Elements From Wastewater for Battery Materials: A Review
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Driven by global carbon neutrality goals, the transition toward a circular economy and sustainable resource management has become increasingly imperative. Given the indispensable role of battery technologies in modern energy storage systems, strategic elements such as lithium (Li), cobalt (Co), and nickel (Ni)—identified by the European ...
Ting Lei +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Harnessing the potential of thermoelectric technology to convert waste heat into electricity, this study sought to enhance overall energy utilization efficiency and contribute to sustainable development through the advancement of environmentally friendly direct‐conversion materials.
Wenying Wang +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Soft‐magnetic materials (SMMs) are indispensable for electrification and sustainable energy systems, yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses. Enhancing the yield strength of SMMs is essential to prevent the degradation in magnetic performance and failure from plastic ...
Nairan Wang +6 more
wiley +1 more source