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Compact and portable in-situ NMR spectrometers which can be dipped in the liquid to be measured, and are easily maintained, with affordable coil constructions and electronics, together with an apparatus to recover depleted magnets are…

仪器与探测器 · 物理学 2021-05-10 Elena Ibragimova , Ilgis Ibragimov

We present an $rp$-adaptation strategy for high-fidelity simulation of compressible inviscid flows with shocks. The mesh resolution in regions of flow discontinuities is increased by using a variational optimiser to $r$-adapt the mesh and…

计算物理 · 物理学 2020-11-10 Julian Marcon , Giacomo Castiglioni , David Moxey , Spencer J. Sherwin , Joaquim Peiró

Flow sensing is fundamental to both biological survival and technological innovation. Inspired by biological mechanoreceptors, artificial flow sensors detect subtle fluid motion using slender, viscous-driven structures. Among these,…

流体动力学 · 物理学 2025-11-17 Wei Sun , Wanyin Zheng , Xiangyu Wei , David A. Czaplewski , Ronald N. Miles , Jian Zhou

Fast and accurate knowledge of power flows and power injections is needed for a variety of applications in the electric grid. Phasor measurement units (PMUs) can be used to directly compute them at high speeds; however, a large number of…

系统与控制 · 电气工程与系统科学 2026-02-11 Satyaprajna Sahoo , Anwarul Islam Sifat , Anamitra Pal

Accurate, non-invasive flow measurement is imperative for efficient water resource management and leak detection in distribution systems. Despite the advent of diverse external sensing technologies, a paucity of consolidated evidence exists…

仪器与探测器 · 物理学 2025-12-11 Juan Diego Belesaca , Fabian Astudillo Salinas

The combination of high-throughput experimentation techniques and machine learning (ML) has recently ushered in a new era of accelerated material discovery, enabling the identification of materials with cutting-edge properties. However, the…

We report on a flow velocity measurement technique based on snap-through detection of an electrostatically actuated, bistable micromechanical beam. We show that induced elecro-thermal Joule heating and the convective air cooling change the…

应用物理 · 物理学 2018-06-15 Yoav Kessler , Robert Ilic , Slava Krylov , Alex Liberzon

Concerning NMR-based metabolomics, 1D spectra processing often requires an expert eye for disentangling the intertwined peaks, and so far the best way is to proceed interactively with a spectra viewer. NMRProcFlow is a graphical and…

定量方法 · 定量生物学 2016-11-24 Daniel Jacob , Catherine Deborde , Marie Lefebvre , Mickael Maucourt , Anick Moing

In the present study, by adopting the advantage of ultrasonic techniques, we developed a Multichannel Pulsed Ultrasonic Doppler Velocimetry (MPUDV) to measure the 2D2C velocity fields of liquid metal flow. Due to the specially designed…

流体动力学 · 物理学 2024-09-05 Ding-Yi Pan , Yi-Fei Huang , Ze Lyu , Juan-Cheng Yang , Ming-Jiu Ni

Monolithic active pixel sensor (MAPS) developments have pushed the detection performance in various directions, especially relative to timing where nanosecond-level precision is now considered. This evolution calls for a simultaneous…

Transport properties in fluids and confined systems play a central role across a wide range of natural and technological contexts, from geology and environmental sciences to biology, energy storage, and membrane-based separation processes.…

When deploying a spectrometer in an adverse environment, such as during a typical ODNP experiment or experiments that require low-volume low-field measurements, a clear and modern protocol for characterizing and quantifying the absolute…

化学物理 · 物理学 2024-10-29 A Guinness , AA Beaton , JM Franck

Microdialysis is a well-established method for in vivo neurochemical measurements of small molecules, with implanted concentric-design probes offering minimized tissue damage and good temporal and spatial resolution. However, the large…

定量方法 · 定量生物学 2021-09-10 Damon Vinciguerra , Margot Vigeant , Ewan C. McNay

Dynamic mode decomposition (DMD) is a powerful and increasingly popular tool for performing spectral analysis of fluid flows. However, it requires data that satisfy the Nyquist-Shannon sampling criterion. In many fluid flow experiments,…

流体动力学 · 物理学 2014-09-17 Jonathan H. Tu , Clarence W. Rowley , J. Nathan Kutz , Jessica K. Shang

A new pathway to nuclear magnetic resonance spectroscopy in high pressure diamond anvil cells is introduced, using inductively coupled broadband passive electro-magnetic lenses to locally amplify the magnetic flux at the isolated sample,…

仪器与探测器 · 物理学 2017-06-02 Thomas Meier , Nan Wang , Dario Mager , Jan G. Korvink , Sylvain Petigirard , Leonid Dubrovinsky

Nuclear Magnetic Resonance (NMR) spectrometry uses electro-frequency pulses to probe the resonance of a compound's nucleus, which is then analyzed to determine its structure. The acquisition time of high-resolution NMR spectra remains a…

In Vapor Cycle Systems, the mass flow sensor playsa key role for different monitoring and control purposes. However,physical sensors can be inaccurate, heavy, cumbersome, expensive orhighly sensitive to vibrations, which is especially…

系统与控制 · 电气工程与系统科学 2024-06-27 Justin Reverdi , Sixin Zhang , Saïd Aoues , Fabrice Gamboa , Serge Gratton , Thomas Pellegrini

In this paper, we introduce a novel mechanism that uses machine learning techniques to detect water leaks in pipes. The proposed simple and low-cost mechanism is designed that can be easily installed on building pipes with various sizes.…

声音 · 计算机科学 2025-01-22 Hossein Pourmehrani , Reshad Hosseini , Hadi Moradi

The goal of the Multi-Purpose Detector (MPD) experiment at NICA collider is to explore the QCD phase diagram of strongly interacting matter produced in nucleus-nucleus collisions at $\sqrt{s_{NN}}=4-11$ GeV. The performance of MPD detector…

核实验 · 物理学 2022-09-21 Vinh Ba Luong , Dim Idrisov , Petr Parfenov , Arkadiy Taranenko , Alexander Demanov

This study extends the flow measurement method initially proposed in [22] to three-dimensional scenarios, addressing the growing need for accurate and efficient non-contact flow measurement techniques in complex hydrodynamic environments.…

数值分析 · 数学 2025-03-18 Jiwei Li , Lingyun Qiu , Zhongjing Wang , Hui Yu