Results 1 to 10 of about 3,701,025 (306)

Phase transition mechanism and bandgap engineering of Sb2S3 at gigapascal pressures

open access: yesCommunications Chemistry, 2021
Antimonite (Sb2S3) has potential applications for solar energy, but how its layered structure changes under pressure is incompletely understood. Here diamond anvil cell experiments supported by first principles calculations offer a structural explanation
Zhongxun Cui   +9 more
doaj   +1 more source

Enhancing reversibility of LiNi0.5Mn1.5O4 by regulating surface oxygen deficiency

open access: yesCarbon Energy, 2023
Oxygen deficiency has crucial effects on the crystal structure and electrochemical performance of spinel oxide lithium electrode materials such as LiNi0.5Mn1.5O4 (LNMO) cathode.
Dandan Wang   +8 more
doaj   +1 more source

Nested order-disorder framework containing a crystalline matrix with self-filled amorphous-like innards

open access: yesNature Communications, 2022
The synthesis and characterization of new crystalline-amorphous hybrid materials is challenging. Here, the authors report the preparation of a nested order-disorder framework by applying high pressure to a nested copper chalcogenide Cu12Sb4S13.
Kejun Bu   +13 more
doaj   +1 more source

High-pressure thermoelasticity of body-centered-cubic tantalum [PDF]

open access: yesPhysical Review B, 2002
We have investigated the thermoelasticity of body-centered cubic (bcc) tantalum from first principles by using the linearized augmented plane wave (LAPW) and mixed--basis pseudopotential methods for pressures up to 400 GPa and temperatures up to 10000 K.
Gulseren, O., Cohen, R. E.
openaire   +2 more sources

A new tonometer based on the application of micro-mechanical sensors [PDF]

open access: yes, 1993
An instrument for the measurement of intraocular pressure (IOP) is presented. It consists of a micromachined silicon sensor, which measures the diameter of a flattened part of the eye globe and simultaneously determines the smallest distance between the ...
Bergveld, Piet   +2 more
core   +3 more sources

Hexagonal B–C–N composite consisting of h-BN and graphite separated by B–C nanolayer [PDF]

open access: yesMatter and Radiation at Extremes
Graphite and hexagonal boron nitride (h-BN), despite their structural similarity, exhibit opposing electronic properties, namely, metallic conductivity and wide-bandgap insulation, respectively.
Baoyin Xu   +12 more
doaj   +1 more source

Discovery of the Baijifeng impact structure in Tonghua, Jilin, China

open access: yesMatter and Radiation at Extremes, 2023
An impact structure 1400 m in diameter, formed by a bolide impact, has been discovered on Baijifeng Mountain in Tonghua City in Northeast China’s Jilin province. The impact structure takes the form of a cirque-shaped depression on the top of the mountain
Ming Chen   +5 more
doaj   +1 more source

Sex-specific relevance of diabetes to occlusive vascular and other mortality : a collaborative meta-analysis of individual data from 980 793 adults from 68 prospective studies [PDF]

open access: yes, 2018
Background: Several studies have shown that diabetes confers a higher relative risk of vascular mortality among women than among men, but whether this increased relative risk in women exists across age groups and within defined levels of other risk ...
Aoki, N   +200 more
core   +6 more sources

Circular Components in Center of Pressure Signals

open access: yesMotor Control, 2013
Static posturography provides an objective assessment of postural control by characterizing the body sway during upright standing. The center of pressure (COP) signal is recorded by a force platform, and it is analyzed by means of many different models and techniques.
AGOSTINI, VALENTINA   +2 more
openaire   +3 more sources

Quantifying center of pressure variability in chondrodystrophoid dogs [PDF]

open access: yesThe Veterinary Journal, 2017
The center of pressure (COP) position reflects a combination of proprioceptive, motor and mechanical function. As such, it can be used to quantify and characterize neurologic dysfunction. The aim of this study was to describe and quantify the movement of COP and its variability in healthy chondrodystrophoid dogs while walking to provide a baseline for ...
S R, Blau   +9 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy