Results 121 to 130 of about 279,604 (383)

Основні напрямки розвитку пошукової та екологічної геохімії [PDF]

, 2008
У статті коротко охрактеризований внесок фахівців Інституту геохімії, мінералогії та рудоутворення ім. М. П. Семененка НАН України у розвиток основних напрямів пошукової та екологічної геохімії — геохімії ландшафтів, геохімії осадових порід, процесів ...
Жовинський, Е.Я., Кураєва, І.В., Самчук, А.І.   +2 more
core  

Adjoint models of mantle convection with seismic, plate motion, and stratigraphic constraints: North America since the Late Cretaceous [PDF]

, 2009
We apply adjoint models of mantle convection to North America since the Late Cretaceous. The present-day mantle structure is constrained by seismic tomography and the time-dependent evolution by plate motions and stratigraphic data (paleoshorelines ...
Gurnis, Michael, Liu, Lijun, Spasojevic, Sonja   +2 more
core   +1 more source

Failure mechanism of the coal wall at the working face based on an eccentric compression mechanical model

Deep Underground Science and Engineering, EarlyView.
In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian, Jiabao Wang, Changsheng Wang, Shijie Sun, Lijun Han, Qingbin Meng, Sunhao Zhang   +6 more
wiley   +1 more source

Geochemistry of U and Th and its Influence on the Origin and Evolution of the Crust of Earth and the Biological Evolution [PDF]

ActaPetrolog.Mineral.17:160-172,1998, 2007
We have investigated the migration behaviors of uranium (U) and thorium (Th) in Earth and other terrestrial planets. Theoretical models of U and Th migration have been proposed. These models suggest that the unique features of Earth are closely connected with its unique U and Th migration models and distribution patterns.
arxiv  

Publications of the exobiology program for 1982. A special bibliography [PDF]

Chemical evolution, organic geochemistry, origin and evalution of life, planetary environments, life in the universe, search for extraterrestrial intelligence, and planetary protection are ...
Devincenzi, D. L., Pleasant, L. G.
core   +1 more source

Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study

Deep Underground Science and Engineering, EarlyView.
This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang, Zhongkai Li, Jianguo Wang, Zhiqiang Li   +3 more
wiley   +1 more source

Boston College Environmental Center Summer Institute on Surtsey and Iceland [PDF]

Studying geology, geochemistry, and biology of Iceland and Surtsey as examples of new and extreme ...
Ponnamperuma, C., Skehan, J. W.
core   +1 more source

Etna International Training School of Geochemistry. Science meets Practice [PDF]

, 2019
Also this year, the “Etna International Training School of Geochemistry. Science meets practice” took place at Mt. Etna, now in its fourth edition.
Bitetto Marcello, Bobrowski Nicole, Brugnone FIlippo, Cabassi Jacopo, Calabrese Sergio, Cantarero Massimo, Capecchiacci Francesco, Consoli Salvatore, Daskalopoulou Kyriaki, Franco Italiano, Fuchs Christopher, Giammanco Salvatore, Giuffrida GIovanni, Ionescu Artur, Kuhn Jonas, Li Vigni Lorenza, Pecoraino Guendalina, Privitera Eugenio, Randazzo Luciana, Tamburello Giancarlo, Tassi Francesco, Venturi Stefania   +21 more
core  

Slabs in the lower mantle and their modulation of plume formation [PDF]

, 2002
Numerical mantle convection models indicate that subducting slabs can reach the core-mantle boundary (CMB) for a wide range of assumed material properties and plate tectonic histories.
Gurnis, Michael, Han, Lijie, Tan, Eh
core   +1 more source

A perspective review of applications of the computed tomography (CT) scan imaging technique for microscopic reservoir rock characterization

Deep Underground Science and Engineering, EarlyView.
In this review, the application of micro‐CT and medical‐CT scanning in the oil and gas industry has been thoroughly discussed. Recent improvements in DRP and modern imaging techniques in the oil and gas industry have been modeled using both experimental and simulation work.
Achinta Bera, Bharadwaj Shukla, Dhruvikkumar Jogani   +2 more
wiley   +1 more source