Results 111 to 120 of about 922,402 (315)

TDLAS Monitoring of Carbon Dioxide with Temperature Compensation in Power Plant Exhausts

Applied Sciences, 2019
Temperature variations of flue gas have an effect on carbon dioxide (CO2) emissions monitoring. This paper demonstrates accurate CO2 concentration measurement using tunable diode laser absorption spectroscopy (TDLAS) with temperature compensation methods.
Xiaorui Zhu, Shunchun Yao, Wei Ren, Zhimin Lu, Zhenghui Li   +4 more
doaj   +1 more source

Mechanical and Microstructural Effects of ZrO2 Nanoparticles in Fe20Cr Oxide Dispersion‐Strengthened Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
The influence of oxide nanoparticle synthesis route and concentration on microstructure and high‐temperature performance of additively manufactured oxide dispersion‐strengthened steels is investigated. Comparing laser‐generated and chemically synthesized ZrO2 nanoparticles, the study reveals how dispersion quality, crystal structure and particle size ...
Mareen Goßling, Silja‐Katharina Rittinghaus, Felix Radtke, Abdelrahman Elsayed, Marina Macias Barrientos, Ulf Ziesing, Louis Becker, Ihsan Murat Kuşoğlu, Christoph Broeckmann, Ulrich Krupp, Avinash Hariharan, Sebastian Weber, Bilal Gökce   +12 more
wiley   +1 more source

Patterns and Drivers of UV Absorbing Chromophoric Dissolved Organic Matter in the Euphotic Layer of the Open Ocean

Frontiers in Marine Science, 2019
The global distribution of chromophoric dissolved organic matter (CDOM) in the euphotic layer of the Atlantic, Indian, and Pacific oceans (between 35° N and 40° S) was analyzed by absorption spectroscopy during the Malaspina 2010 circumnavigation ...
Francesca Iuculano, Xosé Antón Álverez-Salgado, Jaime Otero, Teresa S. Catalá, Teresa S. Catalá, Teresa S. Catalá, Cristina Sobrino, Carlos M. Duarte, Susana Agustí   +8 more
doaj   +1 more source

Loss tolerant quantum absorption measurement

New Journal of Physics, 2020
The quantum statistics of entangled photon pairs promise greater performance for absorption measurements than can be achieved classically. However, the performance of a quantum approach is easily degraded under a loss of photons caused by experimental ...
Ryo Okamoto, Yuta Tokami, Shigeki Takeuchi   +2 more
doaj   +1 more source

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

Advanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach, Oliver Schenk, Valérian Iss, Ali Rajaei, Jiali Zhang, Felix Weber, Christoph Broeckmann   +6 more
wiley   +1 more source

X-ray absorption spectroscopy on layered cobaltates Na_xCoO_2

, 2006
Measurements of polarization and temperature dependent soft x-ray absorption have been performed on Na_xCoO_2 single crystals with x=0.4 and x=0.6.
B. Büchner, C. Hess, C. Sekar, D. R. Batchelor, G. Krabbes, H. Berger, H. Rosner, J. Fink, J. Geck, M. Knupfer, T. Kroll, T. Schwieger   +11 more
core   +1 more source

Quantum Cascade Laser Absorption Spectroscopy as a Plasma Diagnostic Tool: An Overview

Sensors, 2010
The recent availability of thermoelectrically cooled pulsed and continuous wave quantum and inter-band cascade lasers in the mid-infrared spectral region has led to significant improvements and new developments in chemical sensing techniques using in ...
Jürgen Röpcke, Norbert Lang, Marko Hübner, Frank Hempel, Stefan Welzel, Paul B. Davies   +5 more
doaj   +1 more source

Process Parameter and Dimension‐Dependent Mn Vaporization During Laser Powder Bed Fusion of an Fe–Mi–Si–Cr‐Based Shape Memory Alloy

Advanced Engineering Materials, EarlyView.
The functional properties of Fe–Mn–Si–Cr‐based shape memory alloys are influenced, among other things, by their chemical composition. Here, the vaporization of Mn, the most volatile element of the alloy, is investigated. It is shown that the process parameters make noninterchangeable contributions to the vaporization and that vaporization differences ...
Maylin Homfeldt, Anastasiya Toenjes
wiley   +1 more source

Unravelling the Correlation of Electronic Structure and Carrier Dynamics in CuInS\u3csub\u3e2\u3c/sub\u3e Nanoparticles [PDF]

, 2017
In this work, we report the direct correlation of photoinduced carrier dynamics and electronic structure of CuInS2 (CIS) nanoparticles (NPs) using the combination of multiple spectroscopic techniques including steady-state X-ray absorption spectroscopy ...
Hu, Wenhui, Huang, Jier, Liu, Cunming, Ludwig, John, Pattengale, Brian, Yang, Sizhuo, Zhang, Xiaoyi, Zuo, Xiaobing   +7 more
core   +1 more source

Axisymmetric Linear Hyperspectral Absorption Spectroscopy and Residuum-Based Parameter Selection on a Counter Flow Burner

Energies, 2019
Chemical species tomography enables non-invasive measurements of temperatures and concentrations in gas phase processes. In this work, we demonstrate the recently introduced linear hyperspectral absorption tomography (LHAT) on an axisymmetric counterflow
Johannes Emmert, Martina Baroncelli, Sani v.d. Kley, Heinz Pitsch, Steven Wagner   +4 more
doaj   +1 more source