Results 51 to 60 of about 2,542 (183)

Metallization and molecular dissociation of dense fluid nitrogen

Nature Communications, 2018
Nitrogen is a model system still presenting unknown behaviors at the pressures and temperatures typical of deep planets’ interiors. Here the authors explore, by pulsed laser heating in a diamond anvil cell and optical measurements, the metallization and ...
Shuqing Jiang, Nicholas Holtgrewe, Sergey S. Lobanov, Fuhai Su, Mohammad F. Mahmood, R. Stewart McWilliams, Alexander F. Goncharov   +6 more
doaj   +1 more source

Compressibility and thermal expansion of natural clinopyroxene Di0.66Hd0.13Jd0.12Ts0.05

Results in Physics, 2019
A natural clinopyroxene (cpx) has been experimentally studied by in-situ X-ray powder diffraction combined with an externally heated diamond anvil cell (DAC) technique in the temperature range 300–673 K and at pressures up to 15 GPa.
Zhishuang Xu, Maining Ma, Baosheng Li, Xinguo Hong   +3 more
doaj   +1 more source

Diamond formation from methane hydrate under the internal conditions of giant icy planets

Scientific Reports, 2021
Hydrocarbon chemistry in the C–O–H system at high pressure and high temperature is important for modelling the internal structure and evolution of giant icy planets, such as Uranus and Neptune, as their interiors are thought to be mainly composed of ...
Hirokazu Kadobayashi, Satoka Ohnishi, Hiroaki Ohfuji, Yoshitaka Yamamoto, Michihiro Muraoka, Suguru Yoshida, Naohisa Hirao, Saori Kawaguchi-Imada, Hisako Hirai   +8 more
doaj   +1 more source

Topic classification of synchrotron experiment proposals using the OpenAlex model: enhancing metadata granularity and assessing live service feasibility

Journal of Synchrotron Radiation, EarlyView.
This paper validates the OpenAlex model for real‐time topic classification of synchrotron proposals. The proposed live service architecture incorporates user verification, providing a scalable solution for introducing enhanced topic metadata into scientific workflows without sacrificing precision.Experiment proposals at synchrotron facilities serve as ...
Terence Tan, Oliver J. Clark, Matthew J. Derry, Renaud Duyme, Guilherme Abreu Faria, Robert Farla, Ralf Flaig, Yogal Prasad Ghimirey, Anushka Ghosh, Miguel A. Gomez-Gonzalez, Ellen L. Heeley, Anna Herlihy, Annette Kleppe, Paul Millar, Melanie Nentwich, Josh Pickston, Nick Terrill, Armin Wagner, Andrew C. Walters, Matthew Watson, Philippe Rocca-Serra, Susanna-Assunta Sansone, Stephen P. Collins   +22 more
wiley   +1 more source

Mechanical and Metallurgical Evaluation of Four Rotary Nickel‐Titanium File Systems: A Multimethod Study

International Endodontic Journal, EarlyView.
ABSTRACT Aim To compare four rotary nickel‐titanium (NiTi) file systems (Endostar E3 Azure, Endostar E3, VDW.ROTATE, and Mtwo) using a multimethod approach to evaluate their mechanical and metallurgical properties. Materials and Methods Endostar E3 Azure, Endostar E3, VDW.ROTATE, and Mtwo (all size 25/0.06 with an S‐shaped cross‐section; 52 instruments
Doğuş Bayraktar, Uğur İnan
wiley   +1 more source

In situ temperature measurements through i-anvils in diamond anvil cells [PDF]

Review of Scientific Instruments, 2010
This study is devoted to in situ temperature measurement in diamond anvil cells (DACs) with intelligent anvils (i-anvils). I-anvils consist of diamonds implanted with B and/or C ions, situated below the diamond’s surface at a depth of 1–3 μm; forming sensors which are placed below the culet at the location of the DAC’s sample chamber.
Gondé, Charlotte, Bureau, Hélène, Burchard, M., Henry, S., Simon, Grégory, Meijer, J., Kubsky, S.   +6 more
openaire   +3 more sources

Measurement of the sound velocity of shock compressed water

Scientific Reports, 2021
The sound velocities of water in the Hugoniot states are investigated by laser shock compression of precompressed water in a diamond anvil cell. The obtained sound velocities in the off-Hugoniot region of liquid water at precompressed conditions are used
Hua Shu, Jiangtao Li, Yucheng Tu, Junjian Ye, Junyue Wang, Qili Zhang, Huiru Tian, Guo Jia, Zhiyu He, Fan Zhang, Zhiyong Xie, Xiuguang Huang, Wenbin Pei, Sizu Fu   +13 more
doaj   +1 more source

A Breakthrough in Pressure Generation by a Kawai-Type Multi-Anvil Apparatus with Tungsten Carbide Anvils

Engineering, 2019
Expansion of the pressure range of Kawai-type multi-anvil presses (KMAPs) with tungsten carbide (WC) anvils is called for, especially in the field of Earth science. However, no significant progress in pressure generation has been made for 40 years.
Takayuki Ishii, Zhaodong Liu, Tomoo Katsura   +2 more
doaj   +1 more source

Crystallography of low Z material at ultrahigh pressure: Case study on solid hydrogen

Matter and Radiation at Extremes, 2020
Diamond anvil cell techniques have been improved to allow access to the multimegabar ultrahigh-pressure region for exploring novel phenomena in condensed matter.
Cheng Ji, Bing Li, Wenjun Liu, Jesse S. Smith, Alexander Björling, Arnab Majumdar, Wei Luo, Rajeev Ahuja, Jinfu Shu, Junyue Wang, Stanislav Sinogeikin, Yue Meng, Vitali B. Prakapenka, Eran Greenberg, Ruqing Xu, Xianrong Huang, Yang Ding, Alexander Soldatov, Wenge Yang, Guoyin Shen, Wendy L. Mao, Ho-Kwang Mao   +21 more
doaj   +1 more source

Temperature Dependence of H2O Solubility in Al‐Free Stishovite

Geophysical Research Letters
The role of stishovite in transporting water in subducting slabs has been a subject of debate for several decades. Here we investigated stishovite's water solubility and its potential role in water transportation as a function of temperature from 1300 to
Narangoo Purevjav, Hongzhan Fei, Takayuki Ishii, Giacomo Criniti, Yanhao Lin, Ho‐Kwang Mao, Tomoo Katsura   +6 more
doaj   +1 more source