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Articles 481 - 510 of 30008
Full-Text Articles in Entire DC Network
Mgrre_Thinsections_Mgrre-143_14, Mgrre
Mgrre_Thinsections_Mgrre-146_9, Mgrre
Mgrre_Thinsections_Mgrre-145_12, Mgrre
Mgrre_Thinsections_Mgrre-142_76, Mgrre
Mgrre_Thinsections_Mgrre-142_85, Mgrre
Mgrre_Thinsections_Mgrre-143_2, Mgrre
Mgrre_Thinsections_Mgrre-145_1, Mgrre
Mgrre_Thinsections_Mgrre-146_3, Mgrre
Mgrre_Thinsections_Mgrre-141_23, Mgrre
Mgrre_Thinsections_Mgrre-141_78, Mgrre
Mgrre_Thinsections_Mgrre-141_35, Mgrre
Mgrre_Thinsections_Mgrre-141_38, Mgrre
Mgrre_Thinsections_Mgrre-141_57, Mgrre
Mgrre_Thinsections_Mgrre-141_75, Mgrre
Mgrre_Thinsections_Mgrre-141_85, Mgrre
Mgrre_Thinsections_Mgrre-142_14, Mgrre
Mgrre_Thinsections_Mgrre-142_45, Mgrre
Mgrre_Thinsections_Mgrre-142_57, Mgrre
Mgrre_Thinsections_Mgrre-142_64, Mgrre
Mapping Of Petroleum-Prospective Structures In The Jurassic Complex Of The Western Aral Uplift Based On Seismic Attributes, Yuliya Leonidovna Salaydinova, Marina Georgievna Yuldasheva
Mapping Of Petroleum-Prospective Structures In The Jurassic Complex Of The Western Aral Uplift Based On Seismic Attributes, Yuliya Leonidovna Salaydinova, Marina Georgievna Yuldasheva
Technical science and innovation
To solve the problems of identifying and mapping prospective structures, comprehensive analysis of 3D seismic attributes is widely used at the present stage of geological research; it was applied to assess the petroleum potential of the Jurassic rock complex in the Aral Sea offshore area of the Ustyurt region. The study integrates structural mapping on the tops of Permo-Triassic and Jurassic horizons, attribute volumes (Variance/Coherence, Sweetness, root-mean-square (RMS) amplitude, Envelope) and generalized spectral decomposition (GSD, 19-41 Hz), combined with well-log and well-test data from the Western Aral, Meros, Dengiz and Karakum areas. Variance attributes were used to delineate fault zones …
Elemental And Mineralogical Characterization Of Permo-Carboniferous Coal In The Ngaka Coalfield, Southwest Tanzania: Implications For Coal Quality Variation, John W. Gama, Justina J. Saroni, Remigius L. Gama
Elemental And Mineralogical Characterization Of Permo-Carboniferous Coal In The Ngaka Coalfield, Southwest Tanzania: Implications For Coal Quality Variation, John W. Gama, Justina J. Saroni, Remigius L. Gama
Tanzania Journal of Science
Coal from heterolithic seams exhibits distinct chemical characteristics due to interbedded non-coal beds, which influence its quality and usability. Despite extensive research in these settings, the elemental and mineralogical characteristics of the heterolithic sequences of the Mchuchuma Formation (K2) in the Ngaka Coalfield remain poorly documented. This study provides the first detailed assessment of K2 seams across five active mine sites. Eleven representative samples were analyzed using proximate, elemental, and mineralogical techniques, supported by Pearson correlation, binary analysis, and Principal Component Analysis. Proximate analysis revealed that ash content varies across mine sites, with values ranging from 9.17 to 25.03%, volatile …
Mgrre_Thinsections_Mgrre-140_2, Mgrre
Mgrre_Thinsections_Mgrre-140_4, Mgrre
Mgrre_Thinsections_Mgrre-140_1, Mgrre
Mgrre_Thinsections_Mgrre-140_3, Mgrre
Mgrre_Thinsections_Mgrre-140_5, Mgrre
Towards Physics-Informed Neural Networks For Simulating Multiphase Geothermal Convection*, Daniel C. Patton, Andrew Harrison Eno
Towards Physics-Informed Neural Networks For Simulating Multiphase Geothermal Convection*, Daniel C. Patton, Andrew Harrison Eno
Campus Research Month
Water and steam flow through porous rock, transferring heat via conduction and buoyancy-driven convection caused by density differences. Traditional numerical methods (finite-volume/finite-element) model this well but can become memory-intensive and unstable for long, high-detail simulations. This work demonstrates a Physics-Informed Neural Network (PINN) using a finite-difference approach within the NVIDIA PhysicsNeMo framework to simulate magma chambers in 2D. Tested on the Rio Pisco pluton in Peru, results are compared with the USGS HYDROTHERM model. PINNs learn from physical laws, offering accurate, flexible solutions with less data and development effort.
Controlled Gelation Of Co₂-Resistant Polymer Systems For Improved Conformance In Co₂-Eor, Maryam Sharifi Paroushi
Controlled Gelation Of Co₂-Resistant Polymer Systems For Improved Conformance In Co₂-Eor, Maryam Sharifi Paroushi
Miners Solving for Tomorrow Research Conference
This presentation introduces a CO₂-resistant hydrogel developed to control fluid movement and improve CO₂ injection performance in subsurface reservoirs for Enhanced Oil Recovery (EOR) and Carbon Capture and Storage (CCS). Conventional polymer gels often lose strength in CO₂-rich environments, resulting in weak plugging, early breakdown, and ineffective flow control. To address this limitation, a sulfonated HPAM-based gel system crosslinked with chromium was developed. The effects of polymer concentration, molecular weight, crosslinker ratio, ionic strength, and pH were investigated to better understand gelation behavior and performance. The formulation exhibited controlled gelation, strong resistance to temperature and CO₂, and minimal shrinkage over …
Theory And Applications Of Natural And Nature-Based Solutions In Estuarine Environments, Elizabeth L. Royer
Theory And Applications Of Natural And Nature-Based Solutions In Estuarine Environments, Elizabeth L. Royer
USF Tampa Graduate Theses and Dissertations
This dissertation focuses on the theory and application of Nature-based Solutions (NbS), through three unique case studies. This study explores how the broad and interdisciplinary NbS framework can be applied to mitigate common coastal hazards. This framework considers the environment, economics, and social wellbeing, equally in the design and implementation of a solution. The current paradigm, working against nature, which is commonly seen in more passive approaches to hazard mitigation, like grey infrastructure (e.g. a seawall to protect a shoreline against wave action) does not accommodate the extremely dynamic environment. As perspectives shift to “working with nature” NbS can be …
Multi-Jurisdictional Hazard Mitigation Plan For Landslides For The Kentucky River Area Development District, Kentucky, Hudson J. Koch, Matt M. Crawford, Jason M. Dortch
Multi-Jurisdictional Hazard Mitigation Plan For Landslides For The Kentucky River Area Development District, Kentucky, Hudson J. Koch, Matt M. Crawford, Jason M. Dortch
Contract Reports--KGS
Landslides are a widespread and complex geologic hazard that affects people and infrastructure. The Kentucky River Area Development District, Kentucky, sustains relatively high landslide activity that impacts several municipalities in eastern Kentucky. This hazard mitigation planning project outlines landslide hazard and risk assessments for the Kentucky River Area Development District, with information needed for each community in the region to develop mitigation strategies that will support infrastructure and development needs, land-use planning, situational awareness, and response and recovery actions for the communities.