Results 71 to 80 of about 18,319 (211)

园林废弃物覆盖垫的持水性能及抗压效果研究

open access: yesShuitu Baochi Xuebao, 2019
为探究园林废弃物制成的覆盖垫是否适用于覆盖城市裸露土壤,采取室内试验方法,对不同施胶量(胶黏剂添加质量分别占园林废弃物质量的20%,25%,30%,35%和40%)不同粒径(小粒径0~1 cm,大粒径1~3 cm)10种覆盖垫的抗压性能、透水性能和持水性能进行测试,以期选出合适施胶量合适粒径的覆盖垫。结果表明:随着施胶量的增加,不同覆盖垫的抗压性均显著增强,且泡水前优于泡水后。小粒径覆盖垫在施胶量不高于30%时透水能力相对较好,施胶量高于30%时的透水能力显著变差,渗透系数为1.09~9.35 cm/s。
李啸冲   +7 more
doaj  

Progress in the application of extracellular polysaccharides of Weissiella in fermented foods [PDF]

open access: yes
Exopolysaccharides (EPS) are natural high polymers metabolized into the extracellular space by lactic acid bacteria during their growth. EPS have a broad spectrum of biological activities including antitumor, antioxidant, cholesterol-lowering, and ...
HUANG Qian, LIANG Anjian, ZHU Pengcheng, LI Dongliang, TANG Junni
core   +1 more source

Non‐Precious Metals Enhance Hydrogen Evolution in COF/Cd0.9Cu0.1S S‐Scheme Heterojunctions: KPFM Reveals Charge Transfer Pathways

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Photocatalytic hydrogen production from water splitting is a promising strategy for sustainable and clean energy generation. However, the design of low‐cost, highly active photocatalysts remains a critical challenge. In this study, covalent organic frameworks (COFs) were loaded onto the surface of Cd0.9Cu0.1S to fabricate COF/Cd0.9Cu0.1S ...
Yue Zhao   +3 more
wiley   +1 more source

青海云杉造林密度与水源涵养功能的响应关系

open access: yesShuitu Baochi Xuebao, 2019
以青海省大通县安门滩小流域7种造林密度的青海云杉人工林为研究对象,利用浸水法、环刀法测定林下枯落物、草本层及0—60 cm土壤层的持水量,定量评价不同密度的青海云杉人工林水源涵养功能。结果表明:(1)不同造林密度下的林分枯落物最大持水量变化范围为1.97~7.60 m3/hm2,枯落物持水量最大的造林密度为1 725株/hm2,造林密度为2 300株/hm2的枯落物持水量最小;不同造林密度的林下草本层持水量变化范围为1.97~7.17 m3/hm2,林下草本层持水量最大的造林密度为1 575株/hm2。(
黄乾, 杨海龙, 朱柱, 赵嘉玮
doaj  

A Stretchable Sandwich Composite Film With Ultra‐Broadband Electromagnetic Interference Shielding and High‐Performance Photothermal Conversion Capability

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT With the rapid growth demand for advanced integrated electronic systems, lightweight flexible electromagnetic interference (EMI) shielding films integrated with functional properties, such as excellent mechanical properties and self‐healing capability, are a research focus in high‐tech functional materials. Herein, a sandwich‐structured aramid
Dan Guo   +9 more
wiley   +1 more source

马占相思人工林不同年龄阶段水源涵养功能及其价值研究

open access: yesShuitu Baochi Xuebao, 2006
对马占相思人工林3个不同年龄阶段(4,7a和11a)的林冠层、林下植被层、枯枝落叶层、林地土壤持水量和渗透性能以及它们随林分年龄的变化规律进行了比较分析。研究结果表明,林分地上部分持水量的大小顺序为11a生(52.86t/hm^2)〉7a生(41.90t/hm^2)〉4a生(25.78t/hm^2),其趋势是随林龄的增大而增加,林地土壤(0~40cm)持水量和渗透性能也有相同的变化趋势;4,7a和11a林分的总持水量即地上部分与林地土壤的持水总量分别为2048.8,2200.3,2313.3t/hm^2,
何斌   +4 more
doaj  

Tunable Redox‐Active Anhydride‐Based Linear Polymer as Organic Cathodes for Chemically Self‐Charging Aqueous Zinc–Ion Batteries

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

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

Analysis of Sex Differences in Slaughtering Performance and Meat Quality Characteristics of Tibetan Black Goats [PDF]

open access: yes
To elucidate the influence of gender on slaughter performance and meat quality traits in Tibetan black goats, three 3-year-old black goat rams and ewes were randomly selected, and their slaughter performance, edible quality, and nutritional components of
Huifang ZHU   +8 more
core   +1 more source

Tailoring Spin States of CuNNi3 via d‐d Orbital Coupling for High Performance Water Splitting

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Against the backdrop of escalating global energy crises and environmental challenges, the development of clean and sustainable hydrogen energy has become increasingly imperative. Hydrogen production via water electrolysis is widely regarded as a promising approach due to its green and efficient characteristics.
Weigao Zhong   +6 more
wiley   +1 more source

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