Results 31 to 40 of about 116,687 (175)
Rare Metals, EarlyView.ABSTRACT Cost‐effective and efficient non‐noble‐metal catalysts for selective lignin hydrogenolysis remain elusive, representing a significant challenge in biorefinery. Here, we prepared a nitrogen‐doped carbon supported CoNi bimetallic catalyst, which was successfully derived from zeolitic imidazolate framework (ZIF) via high‐temperature pyrolysis ...
Xingwei Luo +3 more
wiley +1 more source
Dianci bileiqi, 2010 比较了用热膨胀仪和耐火度测定仪测定电瓷材料烧结温度的结果,并用热膨胀仪探讨了电瓷材料的烧结温度与升温速率的关系。研究表明:用热膨胀仪测定电瓷材料的烧结温度和烧结温度范围信息量大、准确度高、可靠性好。电瓷材料烧结温度Ts与升温速率V的对数满足线性关系,能较有效地评价在不同升温速率下的烧结温度。
周海球, 胡雪岩, 肖汉宁
doaj
The Effect of Heat Treatment on Mechanical Properties of Cu-0.93 mass％Ni-0.24 mass％P Alloy [PDF]
, 2019 Cu-Ni-P alloys are the typical precipitation-hardening material. Thus, Cu-Ni-P alloys are expected to apply alternative materials for heat-exchanger tubes.
安藤 哲也, 河野 浩三, 稲垣 達
core +1 more source
High‐Brightness Delayed Imaging Realized by Embedding Zinc Gallate Nanocrystals Into Glass
Rare Metals, EarlyView.ABSTRACT X‐ray delayed imaging technology leverages an “irradiation‐storage‐thermally stimulated readout” mode, demonstrating unique advantages in intermittent monitoring scenarios such as high‐temperature/high‐radiation environments. This typically requires materials combining abundant carrier‐trapping energy levels with structural thermostability ...
Jun‐Xiao Wu +6 more
wiley +1 more source
Dianci bileiqi, 2003 研究了制造过程中的升温速度、烧结温度、保温时间及冷却速度对氧化锌压敏电阻片电位梯度的影响,对氧化锌压敏电阻片的烧结工艺进行了优化,并从理论上探讨了升温速度、烧结温度、保温时间及冷却速度影响氧化锌压敏电阻片电位梯度的机理。试验结果表明,连续缓慢升温至1200℃保温3h,随炉冷至室温的烧成制度有利于获得优异的电性能。
严群, 唐俊, 陈家钊, 涂铭旌
doaj
Rare Metals, EarlyView.ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang +7 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT The evolution of the γ′−Ni3(Al, Ti) phase in superalloys is governed by a coupled coalescence‐ripening mechanism driven by elemental diffusion. In this study, thermal exposure experiments were performed at 750°C and 800°C for durations ranging from 100 to 20,000 h.
Zhaotian Wang +5 more
wiley +1 more source
Gaoya dianqi, 2015 线芯温度是反映电缆正常运行与否的重要参数,线芯温度过高会加速电缆绝缘老化,导致电缆绝缘水平降低。针对电缆线芯温度测量一直缺乏有效监测方法的问题,笔者提出基于电缆绝缘层温度和运行电流计算电缆线芯温度的方法。根据10 kV矿用高压电缆物理结构,建立了线芯温度计算模型,设计了电缆线芯动态温度实验方案,采用红外热像仪测量剥去护套的电缆绝缘层温度和线芯温度,利用热路模型反演计算线芯温度,并进行了实验验证。实验结果表明,线芯温度计算值与测量值之间的误差低于5%,监测方法满足电缆线芯温度实时监测要求。
苏文 +5 more
doaj
Research of Algorithms retrieving Sea Surface Temperature and Their Application Based on LandSAT8/HJ-1B Satellites [PDF]
, 2015 海表温度(SST)是建立大气与海洋边界条件的一个关键变量，它影响着海洋表面与大气的感热和潜热交换，对全球天气和气候变化起了非常重要的作用。在全球尺度上，海表温度有助于人们深入认识地球热平衡、大气和海洋的环流模式，以及大范围的海温异常现象如埃尔尼诺现象、拉尼娜现象等。而在局部尺度上，SST也被用来研究锋面、渔场、赤潮、海洋热污染、城市热岛效应等小范围的温度事件。 卫星遥感方法则为人们获取大面积的SST资料提供了一个十分便捷的途径。其中高空间分辨率SST是分析和认识小尺度海洋温度变化的重要数据源 ...
黄路
core
Rare Metals, EarlyView.ABSTRACT Single‐atom catalysis hinges on fundamental challenges in precisely controlling metal‐support interactions and rationally regulating metal–adsorbate relationships. Herein, we report a universal strategy for constructing highly efficient and well‐defined Cu(I) single‐atom catalysts based on a trifurcate AlL3 molecular support.
Donghui Zhang +9 more
wiley +1 more source