Results 81 to 90 of about 2,317,450 (234)

Energetics of the Citric Acid Cycle in the Deep Biosphere

open access: yesGeophysical Monograph Series, Page 303-327., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Peter A. Canovas III, Everett L. Shock
wiley  

+1 more source

Deformation Rule and Failure Characteristics of Surrounding Rock of Borehole in High Extraction Roadway of Mining Overburden

open access: yesTaiyuan Ligong Daxue xuebao
【Purposes】The stability of borehole is the key to the extraction of coalbed methane in high pumping roadway.【Methods】 One the basis of theoretical analysis and numerical simulation, the stress situation of the surrounding rock of the borehole was ...
ZHANG Jingyu   +6 more
doaj   +1 more source

Calculation model for borehole collapse volume in horizontal openhole in formation with multiple weak planes

open access: yesPetroleum Exploration and Development, 2014
In view of borehole collapse in testing of horizontal wells, a calculation model for borehole collapse volume of horizontal open-hole in multiple-weak-plane formation was set up to analyze the factors affecting collapse volume.
Zhiyuan LIU   +5 more
doaj   +1 more source

Too Hot, Too Cold, Just Right: Thermal Modulating Capacity of Different Sources of Groundwater Discharge to Salmon‐Bearing Streams

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Groundwater discharge plays a key role in maintaining habitat suitability for cold‐water fish by generating streamflow and modulating temperatures. However, the thermal influence depends on groundwater source depth and how far groundwater travels from the point of discharge to a receiving stream.
Tyelyn Brigino   +6 more
wiley   +1 more source

Study of borehole stability of volcanic rock formation with the influence of multiple factors

open access: yesJournal of Petroleum Exploration and Production Technology
Borehole instability in igneous rock formation has attracted more and more attention in recent ten years. In order to understand the mechanism of wellbore instability in igneous formation, a borehole stability model is established by applying the thermal,
Mingming Zhang   +5 more
doaj   +1 more source

The Role of Global Political Economy in Community‐Based Adaptation to Climate Change—Practitioners' Experience and Opinions

open access: yesSustainable Development, EarlyView.
ABSTRACT Community‐based adaptation scholars and practitioners acknowledge that power asymmetries pose significant barriers to project impact. Nevertheless, there is little research on the role of the global political economy as the root cause of vulnerability.
Tom Selje, Alexandra Klepp, Boris Heinz
wiley   +1 more source

Camels as a Climate‐Resilient Linchpin for Sustainable Development in Global Drylands

open access: yesSustainable Development, EarlyView.
ABSTRACT Camels represent a significant, yet underutilized, asset for advancing integrated sustainable development in the world's expanding drylands. Previous reviews have examined camels' physiology, milk composition, or pastoral systems in isolation; this review examines their potential as a climate‐resilient linchpin for food systems by synthesizing
Ayana Angassa   +2 more
wiley   +1 more source

Borehole Stability of Shale Oil Horizontal Wells under Multi-Field Coupling Conditions

open access: yesShiyou jixie
During drilling of shale oil horizontal wells, shale formations with abundant micro-fractures are prone to strong hydration swelling once exposed to water, consequently leading to severe borehole collapse. To address this engineering problem, a numerical
Duan Zhifeng   +5 more
doaj  

Towards Responsible Mining in Africa: Problematising the Environmental and Public Health Concerns of Artisanal and Small‐Scale Gold Mining in Ghana

open access: yesSustainable Development, EarlyView.
ABSTRACT There have been emerging media reports on the impact of cyanide and mercury use in artisanal and small‐scale gold mining (ASGM) operations on community health, especially among pregnant and non‐pregnant women, ASGM miners, and children in rural Africa.
Francis Arthur‐Holmes   +2 more
wiley   +1 more source

Study on Rock Characteristics of Borehole Wall during Supercritical Carbon Dioxide Drilling

open access: yesShiyou jixie, 2022
Borehole instability seriously affects the drilling production. Studying the influence of supercritical carbon dioxide on the rock characteristics of drilling borehole is beneficial to ensure the borehole stability.
Meng Zhaofeng
doaj  

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