Results 21 to 30 of about 808,074 (169)
This study investigates distribution patterns of Galliforms in the Indian Himalayas, focusing on factors influencing their occurrence, regions of high diversity and endemism, and their overlap with protected areas. Our study highlights the need for assemblage‐level conservation strategies in high Himalaya which primarily relies on snow leopard‐focused ...
Manvi Sharma +5 more
wiley +1 more source
Laser‐Driven Halide Exchange and High‐Resolution Multicolor Patterning of Perovskite Films
ABSTRACT Translating the excellent properties of metal halide perovskites (MHPs) into practical flexible optoelectronic devices requires high‐resolution multicolor patterning techniques that are compatible with post‐fabrication processing. However, such a capability has remained elusive.
Shu Yang +6 more
wiley +1 more source
合成了AA/MA/AM/MM 多元共聚物,并对所得产品进行了碳酸钙静态阻垢实验,探讨了共聚物的分子量、投加量、溶液的pH 值、温度、恒温时间等因素与共聚物阻垢率的关系,并用扫描电子显微镜观测了碳酸钙晶形的变化,结果表明,AA/MA/AM/MM 多元共聚物阻垢性能较好,该共聚物使碳酸钙晶形发生了畸变。
王艳 +4 more
doaj
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
ABSTRACT Efficient and durable bifunctional electrocatalysts are vital for scalable water electrolysis. Here, we realize cobalt‐vacancy (Covac) engineering in CoFeP supported on N,P‐codoped carbon nanocages (Co1‐vacFeP/NPC) through a simple route comprising a CoFe Prussian blue analog precursor, phosphidation–pyrolysis, tannic‐acid etching, and a ...
Yuan‐Liang Yuan +6 more
wiley +1 more source
作者用鼓泡法对丙烯酸的均聚物和共聚物,以及不同分子量的均聚物对碳酸钙的阻垢作用进行了对比研究。结果发现:(1)丙烯酸的均聚物和共聚物不仅有分散作用,而且还有阻垢(增溶)作用。(2)鼓泡法不仅可研究含磷阻垢剂,而且还可研究聚羧酸盐分散剂的阻垢作用。(3)丙烯酸共聚物的阻垢性能优于其均聚物。(4)西烯酸均聚物分子量在4000左右时的阻垢性能较好。
周本省, 苏德中, 陆建英
doaj
以过硫酸铵和季戊四醇为氧化还原引发体系引发丙烯酰胺(AM)与甲基丙烯酰氧乙基三甲基氯化铵(DMC)自由基共聚合,采用FTIR和1H-NMR进行结构表征.研究了引发剂用量、单体配比及浓度对星形阳离子型聚丙烯酰胺共聚物特性粘数及阳离子度的影响,并用于处理高岭土废水,其絮凝效果明显优于相应的均聚物及线形共聚物.
ZHENGBao-qing(郑宝庆) +1 more
doaj +1 more source
ABSTRACT Chemically self‐charging aqueous zinc‐ion batteries (AZIBs) have emerged as promising candidates for energy storage technologies owing to their environmental autonomy and structural simplicity. Nonetheless, the self‐charging performance is significantly compromised by the limited potential difference between cathodes and oxygen, as well as the
Yan Wang +5 more
wiley +1 more source
以马来酐、丙烯酰胺、丙烯酸羟乙酯为原料合成了新型三元共聚物阻垢分散剂,探讨了对共聚物阻垢性能的影响因素,得出了最佳合成条件:单体配比n(MA)∶n(AM)∶n(HEA)=1.5∶0.6∶0.4、引发剂与单体质量比为8%、聚合温度80℃、聚合时间4 h。阻垢性能试验表明该共聚物相对分子质量为2 400及共聚物质量浓度为15 mg/L时阻垢效果最好。该共聚物具有良好的阻垢性能,是一种高效的绿色阻垢剂。
唐宏科, 王磊
doaj
ABSTRACT Aqueous vanadium dioxide (VO2)‐based smart thermal insulation coatings represent a viable strategy to decrease building energy consumption and advance sustainable development goals. However, the inherent instability and limited compatibility with polymer matrices of VO2 hinder its widespread application.
Xiuxian Zhao +9 more
wiley +1 more source

