Results 51 to 60 of about 1,128,252 (254)

Cryogenic Deformation Behavior of TiAl and Insights Into Embrittlement After High‐Temperature Exposure Combined With Secondary Ion Mass Spectroscopy of Near Surface Chemistry

Advanced Engineering Materials, EarlyView.
Near‐surface deuterium enrichment profiles for different microstructural types of TiAl after exposure at 700 °C in a heavy water‐containing environment. The deuterium levels are significantly higher than expected from natural occurrence, indicating that the heavy water dissociated during the exposure treatment and entered the specimens.
Jonathan D. H. Paul, Alexander Welle, Dirk Matthiessen, Michael Oehring, Fritz Appel, Florian Pyczak   +5 more
wiley   +1 more source

On-Line Hydrogen-Isotope Measurements of Organic Samples Using Elemental Chromium: An Extension for High Temperature Elemental-Analyzer Techniques [PDF]

, 2015
The high temperature conversion (HTC) technique using an elemental analyzer with a glassy carbon tube and filling (temperature conversion/elemental analysis, TC/EA) is a widely used method for hydrogen isotopic analysis of water and many solid and liquid
Arndt Schimmelmann (1352943), Willi A. Brand (1598380), Tetyana Gilevska (1598386), Brand, Willi A., Julian Renpenning (1531390), Gehre, Matthias, Renpenning, Julian, Meijer, Harro A. J.; id_orcid, Qi, Haiping, Harro A. J. Meijer (796441), Tyler B. Coplen (1598383), Coplen, Tyler B., Meijer, Harro A. J., Matthias Gehre (1531399), Gilevska, Tetyana, Schimmelmann, Arndt, Haiping Qi (1598377)   +16 more
core   +2 more sources

Atom Probe Tomography as an Emerging Tool for Understanding Defect‑Driven Mechanisms in HfO2‑Based Ferroelectrics

Advanced Functional Materials, EarlyView.
This Perspective highlights atom probe tomography as a powerful tool for understanding the atomic‐scale defect chemistry in HfO2‐based ferroelectrics. 3D mapping of dopants, point defects, and interface chemistry can provide new insight into defect‐driven mechanisms underpinning the ferroelectricity in the system and guide the design of more reliable ...
Kasper Hunnestad, Catherine Dubourdieu, Alexei Gruverman, Dennis Meier   +3 more
wiley   +1 more source

The Lamb Shift Experiment in Muonic Hydrogen [PDF]

, 2005
The subject of this thesis is the muonic hydrogen (µp) Lamb shift experiment being performed at the Paul Scherrer Institute, Switzerland. Its goal is to measure the 2S-2P energy difference in µp atoms by laser spectroscopy and to deduce the proton root ...
Antognini, Aldo
core   +1 more source

Diffusion of Hydrogen Isotopes in Zirconium Alloys

He huaxue yu fangshe huaxue
Tritium is a common radioactive product in nuclear power plants. It is easy to diffuse, penetrate and be easily absorbed by organisms due to its small atomic radius.
Long WANG, Zhi-hao HONG, You-zhi WANG, Zi-kai LIU, Xiao-qian ZHANG, Tian-guang ZHANG, Long ZHANG   +6 more
doaj   +1 more source

Construction and testing of a low-cost device for the collection of rainfall samples destined for stable isotope analysis

South African Journal of Science, 2023
Oxygen- and hydrogen-isotope ratios in rainfall provide important hydroclimatic information, yet despite a global network of rainfall isotope measurements, significant geographical gaps exist in data coverage, with only three long-term stations spanning
Jonathan A. Holmes, Jennifer M. Fitchett
doaj   +1 more source

Origin and pathways of pro- and retrograde fluids, PTt paths and fluid-mineral equilibria from Alpine veins of the Central Alps : case studies of the Fibbia and Amsteg areas [PDF]

, 2006
In order to constrain the conditions of and processes related to vein formation and the origins of mineralising fluids, field work, multiple geochemical methods applied to whole rocks, minerals, and fluid inclusions, as well as thermodynamic modeling ...
Heijboer, Tjerk Cornelis
core   +1 more source

Mechanical Programming of PEGDA‐β‐CD Polyrotaxane‐Based Hydrogels via Host–Guest Molecular Recognition

Advanced Functional Materials, EarlyView.
A mechanically programmable hydrogel for tissue engineering is developed by modulating the molecular threading density of poly(ethylene glycol) diacrylate‐β‐cyclodextrin (PEGDA‐β‐CD) polyrotaxane and combining it with β‐CD‐modified gelatin. The polyrotaxane‐guided transition from disordered pores to laminar microstructures enables precise tuning ...
Shiyi Chen, Xudan Xing, Haopu Su, Dominik Voll, Xiaohe Xu, Jiafeng Wan, Tongtong Cui, Christian W. Schmitt, Stefan Bräse, Peng Li, Patrick Théato   +10 more
wiley   +1 more source

Mechanistic investigation of the formation of H2 from HCOOH with a dinuclear Ru model complex for formate hydrogen lyase

Science and Technology of Advanced Materials, 2017
We report the mechanistic investigation of catalytic H2 evolution from formic acid in water using a formate-bridged dinuclear Ru complex as a formate hydrogen lyase model.
Taisuke Tokunaga, Takeshi Yatabe, Takahiro Matsumoto, Tatsuya Ando, Ki-Seok Yoon, Seiji Ogo   +5 more
doaj   +1 more source

The isotopic composition of methane in the stratosphere : high-altitude balloon sample measurements [PDF]

, 2011
The isotopic composition of stratospheric methane has been determined on a large suite of air samples from stratospheric balloon flights covering subtropical to polar latitudes and a time period of 16 yr.
Brass, Marc, Engel, A., Röckmann, Thomas, A. Engel, Borchers, Reinhard, T. Röckmann, M. Brass, Brass, M., Engel, Andreas, Röckmann, T., Borchers, R., R. Borchers   +11 more
core   +2 more sources