Results 101 to 110 of about 489,650 (137)

Lignin‐Derived Carbon Quantum Dots as Hole‐Trapping Promoters in LCDs/Bi‐MOF/ZIS With S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Peroxide Production in Pure Water

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Photocatalytic hydrogen peroxide (H2O2) production from water and oxygen driven by solar energy represents a highly promising green and sustainable strategy. Herein, lignin‐derived carbon quantum dots (LCDs) were strategically introduced at the heterojunction between a Bi‐based metal organic framework (Bi‐MOF) and ZnIn2S4 (ZIS).
Wanpeng Sun   +8 more
wiley   +1 more source

研究两相流流动特性的测量系统

open access: yes, 1992
一种在气-液两相流或液相流中流动特性的测量系统,其结构简单、操作方便、实用性强;它可以自动地移动测量探针、进行多通道的数据采集和对实测数据进行实时处理;采样频率可达几十万赫兹; 这个系统适用于处理各种仪表输出的模拟或数字信号。本文描述了测量气泡速度、气泡大小、含气率、混匀时间和剪切应力等的电位探针和电化学技术 ...
蔡志鹏   +4 more
core  

Upcycling Spent Cu‐Containing Catalysts to CuO Humidity Sensors for Physiological Detection: Calcination Temperature Optimization

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT To achieve high‐value utilization of spent catalysts, we recovered copper (Cu) from Cu‐bearing spent catalysts via acid‐base leaching to fabricate CuO and systematically studied how calcination temperature affects their microstructure and humidity‐sensing performance. Characterizations show that CuO‐500 (calcined at 500°C) has a large specific
Cong Liang   +9 more
wiley   +1 more source

力学测量方法及其进展

open access: yes, 1984
力学测量方法是解决复杂力学问题的重要手段,也是一门自成体系的学科。《力学测量方法及其进展》一文介绍了这门学科的任务,以及力学测量方法的种类 ...
曾春华
core   +1 more source

一种基于拉曼光谱测量的水面油膜厚度测量方法及装置

open access: yes, 2016
本发明公开一种基于拉曼光谱测量的水面油膜厚度测量方法,将水体和石油烃类污染物拉曼信号的峰高比作为油膜厚度计算因子,在一定的油膜厚度范围内,油膜厚度计算因子与油膜厚度呈线性关系;通过测量计算因子反演出水体表面油膜厚度。测量装置包括三维调整模块、三维调整支架和密封外壳,外壳内设置有光源控制电路、探测单元和信号处理传输单元;本发明的优点:可实现对水体油膜厚度的直接测量,检测速度快,避免繁琐的步骤,同时不需要化学试剂,对水质本身没有影响。探头内部设计有开关及透镜,可有效避免激光长期输出对人眼的伤害 ...
冯巍巍, 蔡宗岐
core  

TA10 Titanium Alloy in HCl Solution: W‐Influenced Corrosion and Passivation Film Evolution

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT This work investigated the evolution of passive films of Ti–0.3Mo–0.8Ni (TMN) in 5 mol L−1 HCl and studied the influence of W on the anti‐corrosion properties of TMN. The intermittent electrochemical impedance spectroscopy test results showed that when TMN entered 5 mol L−1 HCl solution, the stability of the passive film first became stronger ...
Chaowen Zheng   +7 more
wiley   +1 more source

一种基于光谱测量技术的双光路水体环境在线测量装置

open access: yes, 2016
本发明公开一种基于光谱测量技术的双光路水体环境在线测量装置,包括一密封外壳,所述外壳内设置探测光学单元、信号处理单元,外壳的中间部位设置探测池;光源控制板控制光源工作,光源发出紫外?可见光;紫外?可见光经透镜一后变为平行光;平行光经半透半反镜后被分为两路,一路穿过探测池的光窗后经透镜二聚焦,再经光纤传输至采集模块,用于测试待测水样,另一路作为光源能量变化的参考信号由光电探测器接收后传输至控制与信号处理模块;本发明的优点是:采用了太阳能供电,可长期运行,采用了光窗清净系统 ...
冯巍巍, 蔡宗岐
core  

Habitat and spatial trends of U.K. wintering waterbird populations over 50 years

open access: yesConservation Biology, Volume 40, Issue 5, October 2026.
Abstract The United Kingdom is an important wintering ground for millions of waterbirds. Most U.K. wintering waterbird populations increased between 1970 and the mid‐1990s, but declined thereafter. We examined U.K. population indices in 46 wintering waterbird species in two 25‐year periods, 1970–1994 and 1995–2019, to identify which waterbird groups ...
Blaise Martay   +8 more
wiley   +1 more source

电解质脉冲法测量水流流速和泥沙含量的方法

open access: yes, 2002
本发明公开了一种电解质脉冲法测量水流流速和泥沙含量的方法,以溶质运移理论、波动学、传导学为基础,结合现代数学建立并求解电解质脉冲在含沙径流中的运移模型,分析模型中水流速度和泥沙含量的特征量,并以理论依据的计算和数据存贮,制作通过水流和泥沙含量测试的计算机软件,本发明能很好地同时测量水流流速和泥沙含量,测量精度非常高,速度较快,并且简单易用。本发明可应用于各种导电性能不太好液体的流速和其中悬浮质的含量测量,测量速度范围为大于零、小于50m/s。泥沙含量测量范围为0-100%,因此也可以测量土壤 ...
王辉, 雷廷武, 赵军, 夏卫生
core  

Psychometric framework for coexistence with large carnivores

open access: yesConservation Biology, Volume 40, Issue 5, October 2026.
Abstract Human–carnivore coexistence is essential for biodiversity conservation, yet measuring the attitudes and behaviors that support it remains methodologically challenging. We developed psychometric scales to assess willingness to coexist with carnivores and the underlying beliefs of this coexistence through an iterative expert elicitation process ...
Benjamin Ghasemi   +14 more
wiley   +1 more source

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