Results 1 to 10 of about 2,958 (116)

Development and validation of risk prediction models for large for gestational age infants using logistic regression and two machine learning algorithms 使用Logistic回归和两种机器学习算法开发和验证大于胎龄儿风险预测模型

open access: yesJournal of Diabetes, Volume 15, Issue 4, Page 338-348, April 2023., 2023
Highlights The logistic regression model consisted of seven commonly used clinical indicators (including lipid profile) and gestational diabetes mellitus subtypes, with an area under the curve (AUC) of 0.760 for the training set and 0.748 for the internal validation set.
Ning Wang   +11 more
wiley   +1 more source

Tree species richness differentially affects the chemical composition of leaves, roots and root exudates in four subtropical tree species

open access: yesJournal of Ecology, Volume 110, Issue 1, Page 97-116, January 2022., 2022
In the BEF‐China experiment, metabolomics samples were collected from four different species and three organs (a). The metabolomes are species and organ specific (b), and the metabolome specificity is attributed to different chemical classes (c). Tree species diversity affects the metabolome composition (d), but more controlled interaction experiments ...
Alexander Weinhold   +7 more
wiley   +1 more source

3D打印高强度、可回收互穿网络环氧树脂沿面闪络特性

open access: yesGaoya dianqi, 2023
以智能、环保为主题的新型电力系统是中国电力领域发展的主要方向,因此对绝缘材料的各方面性能提出了更高的要求。文中基于高韧性环氧大豆油基光敏树脂,在光固化树脂中添加60 wt%的环氧树脂,采用3D打印光固化和热固化的两步固化方式,制备得到力学和电学性能优异的双固化树脂,并对其进行回收重塑得到回收后的双固化树脂。分别对树脂的拉伸强度、弯曲强度、介电性能、体积电阻率进行测试,研究表明,制备的双固化树脂相比于纯光固化树脂,具有优异的力学性能和绝缘性能,回收后树脂的力学强度是新制树脂的80%。对树脂进行沿面闪络实验,
赵腾   +4 more
doaj  

新型脂环族环氧树脂和硅橡胶材料性能对比研究

open access: yesDianci bileiqi, 2022
由于复合绝缘子出现鸟啄、异常发热、酥朽断裂等运行问题,研究人员尝试采用新型脂环族环氧树脂材料代替常用的硅橡胶。为了评估脂环族环氧树脂的综合性能,通过脂环族环氧树脂和硅橡胶的憎水性、憎水迁移性、耐漏电起痕、介电常数、介电损耗、平均断裂能量等试验数据对比研究了二者的运行性能。研究结果表明相比于硅橡胶材料,脂环族环氧树脂材料同样具有优良的憎水性、憎水迁移性和介电性能,且脂环族环氧树脂的耐漏电起痕性能和缺陷扩展性能优于硅橡胶。
曾向君   +5 more
doaj  

Enhancement of Corrosion and Wear Resistance in Polymeric Coatings via Ce(III)‐Functionalized Ternary ZnAlCe Layered Double Hydroxides Intercalated With EDTMP

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT The intricate corrosion environment necessitates the polymeric coating's adaptability to the surroundings. In this work, the integration of rare‐earth Ce(III) ions and ethylene diamine tetramethylene phosphonic acid (EDTMP) in a layered double hydroxide (LDH) material is developed to enhance the corrosion protection and anti‐wear properties of
Yangu Liu   +9 more
wiley   +1 more source

Amphiphilic Block Copolymer‐Functionalized VO2 Nanocomposites for Smart Waterborne Polyurethane Coatings

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
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

Fat storage and drought tolerance in a seasonally‐adapted primate: Implications for modeling the effects of animal responses to global climate change 灵长类动物在季节性适应下的脂肪储存和耐旱性:模拟动物应对全球气候变化影响的启示

open access: yesIntegrative Conservation, Volume 3, Issue 3, Page 168-182, September 2024.
Using long‐term field data, we examined the impact of severe droughts on the health, reproductive success, and behavior of the critically endangered Verreaux's sifaka (Propithecus verreauxi) in Madagascar's seasonally dry tropical forest. Despite reduced availability of high‐quality foods, sifaka exhibited stable body condition and reproductive success,
Carrie C. Veilleux   +2 more
wiley   +1 more source

Topical and transdermal botanical formulations of the Chinese pharmacopoeia—A review

open access: yesPhytotherapy Research, Volume 38, Issue 9, Page 4716-4735, September 2024.
Abstract In pharmaceutics, ingredients are classified as active ingredients and excipients. In topical/transdermal phytomedicines, an ingredient may serve both functions. Published information on these dual‐purpose ingredients and their pharmacological relevance is limited.
Jingyi Gu   +3 more
wiley   +1 more source

A pilot study of antimicrobial effects and ototoxicity of a Norway spruce (Picea abies) resin‐based canine otic rinse product

open access: yesVeterinary Dermatology, Volume 35, Issue 3, Page 325-336, June 2024.
Background – Norway spruce (Picea abies) resin‐based products are used in human medicine. A resin‐based otic rinse also could be useful in supportive care of canine otitis externa (COE), yet information on its antimicrobial effect against canine pathogens or ototoxicity is lacking.
Elina Aimo‐Koivisto   +5 more
wiley   +1 more source

强型树脂混杂的测试方法的研究

open access: yesGongye shui chuli, 1987
强酸阳树脂和强碱阴树脂的混杂,国内外至今没有很好的测试方法。本文根据离子交换树脂与有色无机离子的交换反应使树脂显色的原理和pH指示剂使树脂染色的原理,为判断强酸阳树脂和强碱阴树脂混杂程度提供了简易方便、准确迅速的测试手段。
朱兴宝, 尹宝珍, 郭静东
doaj  

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