Results 101 to 110 of about 268,148 (308)
Journal of Palaeogeography, 2020 This study investigates the process of formation of ooidal ironstones in the Upper Cretaceous-Paleogene succession in western Siberia. The formation of such carbonate-based ironstones is a continuing problem in sedimentary geology, and in this study, we ...
Maxim Rudmin +7 more
doaj +1 more source
Two-sided asymmetric subduction; implications for tectonomagmatic and metallogenic evolution of the Lut Block, Eastern Iran [PDF]
, 2011 West directed subduction zones show common characteristics, such as low structural elevation, deep trench, steep slab and a conjugate back-arc basin that are opposite to those of the east directed subduction zones.
Arjmandzadeh, R. +5 more
core +2 more sources
Eggshell‐Based Biochar for Superior Adsorption of Crystal Violet Dye and Fluoride From Wastewater
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Present study investigates the efficiency of eggshell biochar as a low‐cost and ecofriendly adsorbent for the simultaneous removal of fluoride ions and crystal violet (CV) dye from wastewater. The eggshell waste was pyrolyzed to produce biochar, which was thoroughly characterized and subsequently employed for contaminant adsorption.
T. Mounika +3 more
wiley +1 more source
Paradigm shift in determining Neoproterozoic atmospheric oxygen [PDF]
, 2016 ACKNOWLEDGMENTS We thank the Geological Survey of Australia for permission to sample the Empress 1A and Lancer 1 cores, the Natural Sciences and Engineering Research Council of Canada for financial support (grant #7961–15) of U.
Benison, Kathleen +7 more
core +3 more sources
Stability and Behavior of Bulk Nanobubbles Under Reservoir Conditions
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Compared with microbubbles, nanobubbles exhibit superior stability, higher specific surface area, and smaller size. These characteristics have increasingly attracted the attention of petroleum researchers. However, existing literature lacks studies on nanobubble concentration and size under harsh reservoir conditions. To address this gap, this
Chuanying Zhang +5 more
wiley +1 more source
Reflexiones sobre el diseño por competencias en el trabajo de campo en Geología [PDF]
Learning activities outside the classroom in Earth Sciences are considered fundamental to achieve an adequate level of knowledge. New pedagogical perspectives, structured in competency-based activities, provide a useful tool to improve the ...
Bach i Plaza, Joan +3 more
core
Book reviews and Book notice [PDF]
, 1968 Book reviews and Book notice from Volume 2, Number 2, 1968 of Earth Science ...
Waikato Geological Society
core +1 more source
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT To address the persistent exceedance of hydrogen sulfide (H2S) concentrations and the limited effectiveness of existing treatments in the Sickle Bay oil production area, this study deeply analyzes the mechanism of H2S generation in the Sickle Bay oil production area and proposes targeted prevention and control strategies. The results show that
Bo Lei +7 more
wiley +1 more source
Making Geology Relevant to Non-Science Majors Through the Environmental Site Assessment Project [PDF]
, 2003 This article reports on the effectiveness of The Environmental Site Assessment (ESA) project, which was developed to make geology more relevant to non-science majors in Appalachian State University's Environmental and Applied Geology course.
core +1 more source
Predicting ecology and hearing sensitivities in Parapontoporia—An extinct long‐snouted dolphin
The Anatomical Record, EarlyView.Abstract Analyses of the cetacean (whale and dolphin) inner ear provide glimpses into the ecology and evolution of extinct and extant groups. The paleoecology of the long‐snouted odontocete (toothed whale) group, Parapontoporia, is primarily marine with its depositional context also suggesting freshwater tolerance.
Joyce Sanks, Rachel Racicot
wiley +1 more source