Results 151 to 160 of about 162,633 (257)

Teaching Geochemistry

This website from the "On the Cutting Edge" workshop series is designed for faculty who teach undergraduate geochemistry and for geochemistry students.
Dave Mogk
core  

Dynamic prediction of coal and gas outburst risk based on quantitative analysis of stress–energy evolution and adaptive correction

Deep Underground Science and Engineering, EarlyView.
This study quantitatively analyzed the spatiotemporal evolution of stress redistribution ahead of the working face by integrating coal seam distribution, tectonic stress anomalies, gas pressure, and mining‐induced disturbances. An R‐value criterion for coal and gas outburst (CGO) risk assessment was established based on energy principles.
Yingjie Zhao, Xueqiu He, Dazhao Song, Liming Qiu, Minggong Guo, Jie Liu, Qiang Liu, Yi Zhu   +7 more
wiley   +1 more source

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

Deep Underground Science and Engineering, EarlyView.
A staged three‐dimensional nonlinear soil–structure interaction (SSI) model is established, in which the initial geostress state, tunnel excavation, lining installation, delayed activation of the internal frame, and subsequent surcharge loading are simulated sequentially.
Xinyu Liu, Xiang Ci, Weizhong Chen, Jianping Yang   +3 more
wiley   +1 more source

Closed‐form stress solution and minimum safe burial depth correction for shallow‐buried large‐diameter energy storage chambers

Deep Underground Science and Engineering, EarlyView.
This study develops a closed‐form solution for stress analysis of shallow‐buried large‐diameter compressed air energy storage (CAES) chambers, explicitly incorporating free surface, lateral pressure, and gravity gradient effects. Validated against numerical simulations, the solution accurately captures stress redistribution and reveals upward migration
Zeyuan Sun, Cheng Zhao, Jinquan Xing
wiley   +1 more source

Correction: Phytotoxicity and metal mobility in soils contaminated with mine tailings. [PDF]

Environ Geochem Health
Buch AC, Fernandes Correia ME, Niemeyer JC, Sims DB, Marques ED, Yadav KK, Obaidullah AJ, Silva CRE, da Silva-Filho EV.   +8 more
europepmc   +1 more source

Developing a universal tunnel span classification from global tunnel databases

Deep Underground Science and Engineering, EarlyView.
A universal tunnel span classification system is introduced that incorporates tunnel span, cross‐sectional area, typical tunnel types, and intended uses. Representative flatness ratio values are also provided for each span class. The classification is derived from a comprehensive database of 450 tunnel profiles from 47 countries.
Simon Heru Prassetyo, Inzagi Suhendar, Semmy Andrew Anugerah Djawa Tagi, Bonifacio Bondan Satryojati, Dzakwan Naufal Pratama, Yeremia Sintong Damero, Yudhidya Wicaksana, Erwin Lim, Ridho Kresna Wattimena   +8 more
wiley   +1 more source

FAIR Global Databases in Geochemistry and their Applications

Geochemical data volumes are ever increasing across the Earth, Environmental and Planetary Sciences. Harvesting the value of big data, machine learning and AI in geochemistry requires access, reusability and reproducibility of these data.
Traun, Marie Katrine, Wörner, Gerhard, Lehnert, Kerstin A., Klöcking, Marthe, Profeta, Lucy, Kallas, Leander   +5 more
core   +2 more sources

Crystallinity-dependent transformation of layered manganese oxides: implications for the mineral diversity of manganese oxides in nature. [PDF]

Natl Sci Rev
Wen K, Yang Y, Li S, Xi J, Yi R, He H, Zhu J.   +6 more
europepmc   +1 more source

Bio‐based tannin‐loaded layered double hydroxides in epoxy coatings for smart corrosion protection of steel in underground infrastructure

Deep Underground Science and Engineering, EarlyView.
This study presents a sustainable smart‐coating strategy for protecting underground steel infrastructures from chloride‐induced corrosion. Zinc‐aluminum layered double hydroxides (LDHs) and tannin‐loaded LDHs (LDH–TA) were incorporated into an epoxy matrix to provide both enhanced barrier properties and active, pH‐responsive inhibition.
Veerle Vandeginste, Xinyu Guo, Dawid Kasprzak, Yukun Ji   +3 more
wiley   +1 more source

A missing continental impact melt sheet signal in the early Earth detrital zircon record. [PDF]

Nat Commun
Szumila I, Trail D, Nakajima M, Vazquez-Lopez V, Haugaard R, Jørgensen T, Ackerson MR, Shirey SB, Litza NB, Hull S, Darling J, Narkar S.   +11 more
europepmc   +1 more source