Results 71 to 80 of about 35,702 (291)

Carbon Dots: An Emerging Frontier for Green and Sustainable Civil Engineering Materials

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Traditional civil engineering materials (CE materials) are usually involved with high‐energy consumption during manufacturing, significant maintenance costs, and substantial environmental impacts throughout their life cycles. The progress of nanotechnology is catalyzing a green and sustainable transformation within the field.
Weiwen Hao, Xiaolong Wang, Xiao Chen, Dong Liu, Zhenhui Kang, Cheng Zhu   +5 more
wiley   +1 more source

Stress Redistribution Mechanisms and Subsidence Control of Fluidized Gangue Backfilling in Underground Coal Mining: Integrated Experimental and Numerical Investigation

Energy Science &Engineering, EarlyView.
Fluidized gangue backfilling controls mining subsidence through stress redistribution in composite backfill‐pillar systems, reducing surface settlement and stress concentrations. Multi‐scale experimental and numerical analysis provides quantitative design parameters for optimizing ground control in sustainable underground coal mining operations ...
Weilong Zhang, Jie Zhang, Yuanzhen Zhang, Wenjing Liu, Liang Li, Deyi Nan, Guannan Zhao, Chen Yang, Haiqing Bian, Hua Shao, Xiao Zuo, Changtai Zhou   +11 more
wiley   +1 more source

Self-gravity, self-consistency, and self-organization in geodynamics and geochemistry [PDF]

, 2005
The results of seismology and geochemistry for mantle structure are widely believed to be discordant, the former favoring whole-mantle convection and the latter favoring layered convection with a boundary near 650 km.
Anderson, Don L.
core  

The elastic constants of MgSiO3 perovskite at pressures and temperatures of the Earth's mantle

, 2009
The temperature anomalies in the Earth's mantle associated with thermal convection1 can be inferred from seismic tomography, provided that the elastic properties of mantle minerals are known as a function of temperature at mantle pressures.
AR Oganov, Artem R. Oganov, BB Karki, BLN Kennett, C Cavazzoni, C da Silva, D Alfé, DA Yuen, DC Wallace, DL Anderson, E Knittle, F Ancilotto, F Buda, G Kresse, G Masters, G Shen, G. David Price, GS Robertson, JC Castle, John P. Brodholt, M Matsui, M O'Keeffe, O Sugino, P Hohenberg, R Car, S Nosé, S-i Karato, SE Kesson, W Kohn, Y Wang   +29 more
core   +1 more source

Conditioning bounds for traveltime tomography in layered media [PDF]

, 2011
This paper revisits the problem of recovering a smooth, isotropic, layered wave speed profile from surface traveltime information. While it is classic knowledge that the diving (refracted) rays classically determine the wave speed in a weakly well-posed ...
Abramowitz M, Aki K, Bal G, Bateman H, Collar A R, DeVore R, Grenander U, H Baek, Herglotz G, Knutson A, L Demanet, Leung S, Shearer P, Shohat J, Simon B, Stefanov P, Stork C, Whitham G B, Wiechert E   +18 more
core   +3 more sources

Seismic reflection imaging of deep crustal structures via reverse time migration using offshore wide-angle seismic data on the eastern margin of the Sea of Japan

Earth, Planets and Space, 2022
We applied reverse time migration (RTM) to offshore wide-angle seismic data acquired with airgun shots and sparsely deployed ocean bottom seismographs (OBSs) for reflection imaging of the Moho discontinuity in the eastern margin of the Sea of Japan ...
Kazuya Shiraishi, Tetsuo No, Gou Fujie
doaj   +1 more source

Iterative algorithms for total variation-like reconstructions in seismic tomography [PDF]

, 2012
A qualitative comparison of total variation like penalties (total variation, Huber variant of total variation, total generalized variation, ...) is made in the context of global seismic tomography.
A. Beck, A. Chambolle, A. Chambolle, A. Cohen, A. Gholami, C. Ronchi, D. Strong, E. Berg van den, E. Candes, E. Esser, F.J. Herrmann, F.J. Simons, G. Hennenfent, I. Daubechies, I. Loris, I. Loris, J. Trampert, J. Trampert, J. Trampert, K. Bredies, L.I. Rudin, M. Yamagishi, P.J. Huber, S. Mallat, S. Setzer, S.S. Chen, T. Goldstein, T. Lukic, T.F. Chan, X. Zhang, Y.E. Nesterov   +30 more
core   +1 more source

Machine Learning‐Driven Classification and Production Capacity Prediction of Tight Sandstone Reservoirs: A Case Study of the Taiyuan Formation, Ordos Basin

Energy Science &Engineering, EarlyView.
On the basis of core and log data, a Bayesian‐Optimized Random Forest model achieved 92.76% accuracy in classifying tight sandstone reservoirs. A gray relational analysis‐derived evaluation index shows > 80% consistency with actual gas zones. ABSTRACT Tight sandstone gas (TSG), an unconventional oil–gas resource, has heterogeneous reservoirs ...
Yin Yuan, Haijiao Fu, Detian Yan, Gang Wang, Shuguang Yang, Mengmeng Liu, Qingling Jiang, Xiaoming Wang, Wei Wang   +8 more
wiley   +1 more source

LitMod2D_2.0: An Improved Integrated Geophysical‐Petrological Modeling Tool for the Physical Interpretation of Upper Mantle Anomalies

Geochemistry, Geophysics, Geosystems, 2020
LitMod2D integrates geophysical and petrological data sets to produce the thermal, density, and seismic velocity structure of the lithosphere and upper mantle.
Ajay Kumar, Manel Fernàndez, Ivone Jiménez‐Munt, Montserrat Torne, Jaume Vergés, Juan Carlos Afonso   +5 more
doaj   +1 more source

Absorption and Scattering 2D Volcano Images from Numerically Calculated Space-weighting functions [PDF]

, 2016
Acknowledgments Yosuke Aoki and an anonymous reviewer greatly improved the quality of the paper. All calculations were made with Mathematica-10TM. Discussions with Marie Calvet, Danilo Galluzzo, Mario La Rocca, Salvatore De Lorenzo, Jessie Mayor and ...
Bianco, Francesca, De Siena, Luca, Del Pezzo, Edoardo, Ibanez, Jesus, Prudencio, Janire   +4 more
core   +1 more source