Results 21 to 30 of about 11,353 (118)
Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal
Conservation Biology, EarlyView.Abstract Globally, the geographic ranges of numerous species are contracting. Identifying spatiotemporal patterns of threat impact can illuminate why species decline in some parts of their range but persist in others. We developed a correlative approach to identify species’ response thresholds and locate ecological refuge areas associated with ...
Natalya M. Maitz +5 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2019 术中低体温是指在麻醉和手术期间人体出现的一种非控制性体温下降的现象,是外科手术期间较常见的一种并发症,外科手术的患者中约有50%-90%的病人会发生术中低体温[1,2]。临床上将中心温度低于36℃定义为低体温,其中中心温度在32℃-36℃为轻度低体温,28℃-32℃为中度低体温,低于28℃则为重度低体温[3,4 ...
齐菲 +4 more
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Because of superior transportability and high energy capacity, methanol is regarded as a potential hydrogen carrier. Photocatalytic methanol dehydrogenation offers a sustainable and cost‐effective method for releasing hydrogen. Conventional photocatalysts face challenging obstacles, including the low catalytic efficiency and rapid ...
Rundong Chen +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo +6 more
wiley +1 more source
Gaoya dianqi, 2021 近年来,GIS在国内得到广泛应用,特别是超特高压电网的建设更进一步扩大了GIS的应用地域,在我国东北、西北环境温度均为低温环境,而过低的温度会对GIS设备产生不利影响,从而影响输变电设备的安全。SF6气体以其优异的绝缘性能和灭弧性能,大量应用在高压组合电器中,但SF6气体较大的分子量决定了其较高的液化温度。在气体液化后,会使气室内的气体密度大幅降低,从而对设备绝缘性能产生不利影响。文中对SF6低温特性进行了分析,提出采用加热器提高气体温度,防止SF6气体液化的方法。针对低温地区所发生的凝露现象进行了分析,
秦晓宇 +6 more
doaj
Dehydrogenation Thermodynamic and Kinetic Challenges of Mg‐Ni‐Based Alloy Hydrides
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Solid‐state hydrogen storage stands as a pivotal, safe, and efficient solution for the future hydrogen economy. Among diverse hydrogen storage systems, Mg‐Ni‐based alloy hydrides are recognized as cornerstone materials. However, their practical application is hindered by two core challenges: the high thermodynamic stability of the hydride ...
Jinglan He +6 more
wiley +1 more source
Gaoya dianqi, 2019 在中国西北的一些高海拔地区,低温持续时间较长,硅橡胶性能改变而引起沿面闪络电压的变化对电力系统有很大影响,因此,研究低温环境对硅橡胶绝缘材料沿面闪络电压的影响以及低温下硅橡胶绝缘材料的闪络电压随温度变化的规律,了解低温下硅橡胶性能改变是否是造成绝缘子闪络事故的原因具有重要意义。为此,在低温下采用恒温试验箱对复合绝缘子用硅橡胶材料进行了低温冷冻处理,在不同温度的低温条件下采用平头板电极模拟不均匀电场,对不同Al（OH）3含量的硅橡胶试样进行了沿面闪络电压的测定。实验结果表明:随着温度的降低 ...
邢照亮 +7 more
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He +13 more
wiley +1 more source
Dianci bileiqi, 2021 因生产中使用的灰蓝釉配方均采用锆系釉,具有高温粘度大,烧成温度高的特点;而坯料烧成温度低,产品烧成温度不能太高,造成灰蓝釉产品因烧成温度低而出现窑后流痕、缩釉,桔釉、表面不平整等现象,影响产品的外观。所以,需研制与坯料烧成温度匹配的低温电瓷灰蓝釉配方。
杨娟
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT With high theoretical capacity and low cost, bismuth sulfide (Bi2S3) demonstrates considerable potential as an anode for sodium/potassium‐ion batteries (SIBs/PIBs). Unfortunately, significant volume variation, low electrical conductivity, and dissolution of polysulfides drastically weaken their intrinsic merits.
Fuyu Xiao +11 more
wiley +1 more source