Results 221 to 230 of about 515,005 (311)

American Geological Surveys [PDF]

Scientific American, 1878
openaire   +1 more source

Molten‐Salt‐Mediated Chemical Looping Oxidative Dehydrogenation of Ethane with In‐Situ Carbon Capture and Utilization

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
A sustainable alternative to steam cracking, the molten‐salt‐mediated oxidative dehydrogenation (MM‐ODH) of ethane (C2H6) in Li2CO3‐Na2CO3‐K2CO3 (LNK) couples thermal cracking with melt‐mediated CO2 capture to realize commercially competitive C2H4 and CO yields. LNK composition strongly influences MM‐ODH process outcomes.
Kyle Vogt‐Lowell, Dennis Chacko, Kunran Yang, Jace Carsten, Junchen Liu, Matthew Housley, Fanxing Li   +6 more
wiley   +1 more source

Present-day vertical land motions (VLM) of the Chesapeake Bay region derived from robust network imaging of global navigation satellite system (GNSS) observations. [PDF]

Sci Rep
Williams K, Stamps DS, Duda J, Kreemer C, Moore WB, Hensel P, Herring T, McKenna TE, Kronebusch M, Walters DC, Carr J.   +10 more
europepmc   +1 more source

Maryland Geological Survey [PDF]

The American Naturalist, 1900
openaire   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Dynamic rockfall risk assessment using multi-source data fusion and 3D simulation: a case study of Jiaohua rock. [PDF]

Sci Rep
Zhao X, Fen W, Dai Z, Jiao W, Geng J, Xiong Q, Zhang N.   +6 more
europepmc   +1 more source

Study on the failure mechanism of the shield excavation face in the sandy cobble stratum under different buried depths

Deep Underground Science and Engineering, EarlyView.
Abstract One of the significant challenges faced in shield tunnel construction is the risk of collapse resulting from abrupt changes in soil conditions in advance of the working face, particularly within the sandy cobble stratum. This study aims to effectively manage these sudden variations and to further investigate the failure mechanisms associated ...
Hua Jiang, Chongyang Liu, Ao Zhang, Xiaoyan Zhang, Yuhang Li   +4 more
wiley   +1 more source

Research on the application of unmanned aerial vehicle aeromagnetic measurement based on rubidium optical pump magnetometer. [PDF]

Sci Rep
Zhou H, Qiao Z, Yuan P, Huang Y, Zhu L, Yang C, Wang L, Zheng L, Wang Y, Wu B, Lin Q.   +10 more
europepmc   +1 more source

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

Deep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

Time Course of Effects and Tissue Concentrations of 6PPDQ in Three Sensitive Salmonids with Additional Data for Two Centrarchid Species. [PDF]

Environ Sci Technol
Soucek DJ, Dorman RA, Candrl JS, Moody AH, Lane RF, Greer JB, Hansen JD, Steevens JA.   +7 more
europepmc   +1 more source