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基于纳米金/介孔NiO/泡沫镍纳米复合材料的微型电极用于地下水重金属检测 Article
薛博元, 杨倩, 夏楷东, 李志宏, 陈宇徽, 张大奕, 周小红
《工程(英文)》 2023年 第27卷 第8期 页码 199-208 doi: 10.1016/j.eng.2022.06.005
Heavy metals, notably Pb2+ and Cu2+, are some of the most persistent contaminants found in groundwater. Frequent monitoring of these metals, which relies on efficient, sensitive, cost-effective, and reliable methods, is a necessity. We present a nanocomposite-based miniaturized electrode for the concurrent measurement of Pb2+ and Cu2+ by exploiting the electroanalytical technique of square wave voltammetry. We also propose a facile in situ hydrothermal calcination method to directly grow binder-free mesoporous NiO on a three-dimensional nickel foam, which is then electrochemically seeded with gold nanoparticles (AuNPs). The meticulous design of a low-barrier Ohmic contact between mesoporous NiO and AuNPs facilitates target-mediated nanochannel-confined electron transfer within mesoporous NiO. As a result, the heavy metals Pb2+ (0.020 mg·L−1 detection limit, 2.0–16.0 mg·L−1 detection range) and Cu2+ (0.013 mg·L−1 detection limit, 0.4–12.8 mg·L−1 detection range) can be detected simultaneously with high precision. Furthermore, other heavy metal ions and common interfering ions found in groundwater showed negligible impacts on the electrode's performance, and the recovery rate of groundwater samples varied between 96.3% ± 2.1% and 109.4% ± 0.6%. The compactness, flexible shape, low power consumption, and ability to remotely operate our electrode pave the way for onsite detection of heavy metals in groundwater, thereby demonstrating the potential to revolutionize the field of environmental monitoring.
关键词: AuNPs Mesoporous NiO Miniaturized electrode Heavy metal ions Groundwater Square wave voltammetry
Existence of complete band gaps in 2D steel-water phononic crystal with square lattice
Cunfu HE, Huanyu ZHAO, Ruiju WEI, Bin WU
《机械工程前沿(英文)》 2010年 第5卷 第4期 页码 450-454 doi: 10.1007/s11465-010-0105-y
关键词: phononic crystal plane wave expansion (PWE) method experimental study
基于刚性与非刚性Square-Twist胞元混合排布的折纸超材料设计与性能编程研究 Article
马家耀, 臧世玺, 陈焱, 由衷
《工程(英文)》 2022年 第17卷 第10期 页码 82-92 doi: 10.1016/j.eng.2022.02.015
关键词: 折纸超材料 超材料 square-twist折纸 非周期性排布 可编程性
Pedro PONCE, Therese PEFFER, Arturo MOLINA
《能源前沿(英文)》 2019年 第13卷 第3期 页码 522-538 doi: 10.1007/s11708-018-0562-2
关键词: thermostats perceptions beliefs signal detection theory (SDT) fuzzy signal detection theory (FSDT) chi-square (CS) test
《结构与土木工程前沿(英文)》 2021年 第15卷 第6期 页码 1317-1336 doi: 10.1007/s11709-021-0763-3
关键词: square concrete filled tubes confine-stiffening confine-strengthening fractal cracking fracture
Study on wave rotor refrigerators
Yuqiang DAI, Dapeng HU, Meixia DING
《化学科学与工程前沿(英文)》 2009年 第3卷 第1期 页码 83-87 doi: 10.1007/s11705-009-0075-y
关键词: wave rotor refrigeration unsteady flow theory wave diagram
Prediction of the shear wave velocity
Amoroso SARA
《结构与土木工程前沿(英文)》 2014年 第8卷 第1期 页码 83-92 doi: 10.1007/s11709-013-0234-6
关键词: horizontal stress index shear wave velocity flat dilatometer test cone penetration test
Lamb wave propagation modeling for structure health monitoring
Xiaoyue ZHANG, Shenfang YUAN, Tong HAO
《机械工程前沿(英文)》 2009年 第4卷 第3期 页码 326-331 doi: 10.1007/s11465-009-0045-6
关键词: Lamb wave modeling LISA/SIM theory finite difference equation finite element
S. Surender REDDY,Chan-Mook JUNG,Ko Jun SEOG
《能源前沿(英文)》 2016年 第10卷 第1期 页码 105-113 doi: 10.1007/s11708-016-0393-y
关键词: day-ahead electricity markets price forecasting load forecasting artificial neural networks load serving entities
向小东
《中国工程科学》 2008年 第10卷 第11期 页码 89-92
根据时间序列近期数据较远期数据包含有更多未来信息的思想,对最小二乘支持向量机预测方法进行了扩展,得到了更具一般性的最小二乘支持向量机预测模型,给出了扩展后的预测模型具体算法。两个时间序列的预测实例表明,扩展后的预测方法获得了更好的预测效果,提升了最小二乘支持向量机预测方法的价值。
A way to explain the thermal boundary effects on laminar convection through a square duct
Liangbi WANG, Xiaoping GAI, Kun HUANG, Yongheng ZHANG, Xiang YANG, Xiang WU
《能源前沿(英文)》 2010年 第4卷 第4期 页码 496-506 doi: 10.1007/s11708-010-0020-2
关键词: convective transport heat transfer mass transfer laminar flow thermal boundary effects
Numerical study on natural convection in a square enclosure containing a rectangular heated cylinder
Jianhua LU, Zhaoli GUO, Zhenhua CHAI, Baochang SHI,
《能源前沿(英文)》 2009年 第3卷 第4期 页码 373-380 doi: 10.1007/s11708-009-0078-x
关键词: natural convection buoyant regime heated cylinder lattice Boltzmann
Diana AMORELLO,Santino ORECCHIO
《环境科学与工程前沿(英文)》 2015年 第9卷 第4期 页码 605-614 doi: 10.1007/s11783-014-0703-8
XU Wenying, GAO Tingyao, ZHOU Rongfeng, MA Lumin
《环境科学与工程前沿(英文)》 2007年 第1卷 第2期 页码 207-212 doi: 10.1007/s11783-007-0036-y
关键词: electrolysis chlorinated relationship mechanism voltammetry technique
A simple multi-wave algorithm for the uncapacitated facility location problem
Fred GLOVER, Saïd HANAFI, Oualid GUEMRI, Igor CREVITS
《工程管理前沿(英文)》 2018年 第5卷 第4期 页码 451-465 doi: 10.15302/J-FEM-2018038
The multi-wave algorithm (Glover, 2016) integrates tabu search and strategic oscillation utilizing repeated waves (nested iterations) of constructive search or neighborhood search. We propose a simple multi-wave algorithm for solving the Uncapacitated Facility Location Problem (UFLP) to minimize the combined costs of selecting facilities to be opened and of assigning each customer to an opened facility in order to meet the customers’ demands. The objective is to minimize the overall cost including the costs of opening facilities and the costs of allocations. Our experimental tests on a standard set of benchmarks for this widely-studied class of problems show that our algorithm outperforms all previous methods.
关键词: discrete optimization UFLP multi-wave optimization strategic oscillation tabu search
标题 作者 时间 类型 操作
Existence of complete band gaps in 2D steel-water phononic crystal with square lattice
Cunfu HE, Huanyu ZHAO, Ruiju WEI, Bin WU
期刊论文
Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory
Pedro PONCE, Therese PEFFER, Arturo MOLINA
期刊论文
Theoretical study on the confine-stiffening effect and fractal cracking of square concrete filled steel
期刊论文
Lamb wave propagation modeling for structure health monitoring
Xiaoyue ZHANG, Shenfang YUAN, Tong HAO
期刊论文
Day-ahead electricity price forecasting using back propagation neural networks and weighted least square
S. Surender REDDY,Chan-Mook JUNG,Ko Jun SEOG
期刊论文
A way to explain the thermal boundary effects on laminar convection through a square duct
Liangbi WANG, Xiaoping GAI, Kun HUANG, Yongheng ZHANG, Xiang YANG, Xiang WU
期刊论文
Numerical study on natural convection in a square enclosure containing a rectangular heated cylinder
Jianhua LU, Zhaoli GUO, Zhenhua CHAI, Baochang SHI,
期刊论文
Vanadium and molybdenum concentrations in particulate from Palermo (Italy): analytical methods using voltammetry
Diana AMORELLO,Santino ORECCHIO
期刊论文
Electrochemical reduction characteristics and the mechanism of chlorinated hydrocarbons at the copper electrode
XU Wenying, GAO Tingyao, ZHOU Rongfeng, MA Lumin
期刊论文