Results 141 to 150 of about 6,364,051 (298)

Hidden in Plain Sight: Aromaticity of Hexagonal Boron Nitride

Chemistry – A European Journal, EarlyView.
How apt is the nickname “white graphene” for hexagonal boron nitride (hBN)? Although graphene's aromaticity is well established, it is not known if hBN is aromatic. In this work, hBN's aromaticity is probed using magnetic and energetic criteria. Group‐theoretic considerations and magnetically induced current density maps are used to further reveal the ...
Suryakanti Debata, Sai Krishna Narayanan, Pratibha Dev   +2 more
wiley   +1 more source

Deformation, rotation, and axial torsion of the left ventricle in coronary heart disease patients with its severe dysfunction

Терапевтический архив, 2012
Aim. To evaluate global left ventricular (LV) systolic longitudinal and circumferential strain rates, rotation, and axial torsion in relation to the type of postinfarction LV remodeling in patients with coronary heart disease (CHD) and severe LV ...
E N Pavliukova, R S Karpov
doaj  

Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

Deep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun, Cheng Zhao, Jinquan Xing, Qinyuan Luo   +3 more
wiley   +1 more source

Two-dimensional speckle tracking for quantification of left ventricular circumferential and radial wall motion in horses

, 2013
Reasons for performing study: The use of two-dimensional speckle tracking (2DST) for quantification of left ventricular (LV) function has recently been described in horses using long-axis images and short-axis images at chordal but not at papillary ...
Verheyen, Tinne, Sys, Stanislas, De Clercq, Dominique, van Loon, Gunther, Decloedt, Annelies   +4 more
core   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Global and regional left ventricular strain indices in post-myocardial infarction patients with ventricular arrhythmias and moderately abnormal ejection fraction

, 2014
We aimed to compare myocardial strains in ischemic heart patients with and without sustained ventricular tachycardia (VT) and moderately abnormal LVEF in order to investigate which index could better predict VT on the basis of the analysis of global and ...
PICCIRILLO, Gianfranco, VITARELLI, Antonino, Robert J. Siegel, Eli S. Gang, Asim Rafique, NGUYEN, BICH LIEN, CAPOTOSTO, LIDIA, PERSI, ALESSANDRO, GAUDIO, Carlo, PLACANICA, ATTILIO   +9 more
core   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Inflation strain response.

, 2015
a) Pressure/average circumferential strain in the peripapillary sclera, b) pressure/average meridional strain in the peripapillary sclera.
Thao D. Nguyen (695816), Joan L. Jefferys (768213), Harry A. Quigley (695817), Jacek K. Pijanka (695814), Craig Boote (288120), Baptiste Coudrillier (768212), Adhiraj Goel (768214)   +6 more
core   +1 more source

Numerical simulation study on the characteristics and propagation attenuation of vibration signals in freezing pipe fracture

Deep Underground Science and Engineering, EarlyView.
This research study employs analysis system (ANSYS) fluid–structure interaction simulations to investigate the generation and attenuation of vibration signals resulting from freezing pipe fractures in artificial ground freezing projects. By evaluating key variables—including frozen soil elastic modulus, brine inlet pressure, and external pipe pressure ...
Yi Cao, Yansen Wang, En Chen, Meng Zhao
wiley   +1 more source

Interobserver Bland and Altman plots.

, 2014
Echo: echocardiography; LVEF: left ventricular ejection fraction; GLS: global longitudinal strain; RGS: radial global strain; CGS: circumferential global strain; #1 for observer 1 and #2 for observer 2; SD: standard deviation.
Loïc Bière (436348), Alain Furber (436350), Erwan Donal (462326), Gaëlle Kervio (515716), Fabrice Prunier (436344), Gwenola Terrien (436345), Serge Willoteaux (515717)   +6 more
core   +1 more source