Results 141 to 150 of about 633,289 (344)

Experimental system for drilling simulated lunar rock in ultrahigh vacuum [PDF]

open access: yes
An experimental apparatus designed for studying drillability of hard volcanic rock in a simulated lunar vacuum of 5 x 10 to the minus 10th power torr is described.
Roepke, W. W.
core   +1 more source

Leasing Colorado's Legacy: New Roadless Plan Opens Backcountry to Drilling [PDF]

open access: yes, 2008
Describes how the legal wrangling over repeal of the Roadless Area Conservation Rule could open Colorado's national forest backcountry to new oil and gas drilling.

core  

Rotating acoustic drills by the interference of detuned vortices

open access: green, 2022
Nóe Jiménez   +3 more
openalex   +2 more sources

Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner   +9 more
wiley   +1 more source

Recovery at Morvin: SERPENT final report [PDF]

open access: yes, 2010
Recovery from disturbance is poorly understood in deep water, but the extent of anthropogenic impacts is becoming increasingly well documented. We used Remotely Operated Vehicles (ROV) to visually assess the change in benthic habitat after exploratory ...
Gates, A.R., Jones, D.O.B.
core  

STUDY OF THE RHEOLOGICAL PROPERTIES OF COMPOSITE POLYMER STABILIZERS FOR DRILLING FLUIDS

open access: bronze, 2022
Zhadyra Artykova   +3 more
openalex   +1 more source

Dual‐Functional Li2B4O7 Coating on Carbon Fibers for Enhanced Li+ Transport and Stability in Sulfide All‐Solid‐State Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A dual‐functional Li2B4O7 coating on carbon fibers is designed to resolve the critical interfacial degradation in sulfide all‐solid‐state batteries. The conformal layer acts as a physical barrier to suppress parasitic reactions while its unique dielectric properties simultaneously facilitate Li+ transport.
Yeonghoon Kim   +5 more
wiley   +1 more source

Simulation and solution of a proppant migration and sedimentation model for hydraulically fractured inhomogeneously wide fractures

open access: yesEnergy Exploration & Exploitation
The distribution of proppant during hydraulic fracturing may directly contribute to the flow conductivity of the proppant fracture, so research on the migration and sedimentation of proppant in the fracture and the final distribution pattern is of great ...
Xiong Peiqi   +6 more
doaj   +1 more source

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