Results 51 to 60 of about 5,253,598 (403)

Study on the Evolution Law of Temperature, Pressure, and Productivity near the Well for Gas Hydrate Exploitation by Depressurization

open access: yesEnergies
In this paper, a one-dimensional model of gas–water two-phase productivity for hydrate depressurization is established, which takes into account permeability variation and gas–water two-phase flow.
Rongrong Qi   +6 more
doaj   +1 more source

Geolectric field measurement, modelling and validation during geomagnetic storms in the UK

open access: yesJournal of Space Weather and Space Climate, 2021
Significant geoelectric fields are produced by the interaction of rapidly varying magnetic fields with the conductive Earth, particularly during intense geomagnetic activity.
Beggan Ciarán D.   +4 more
doaj   +1 more source

Water resources data for Alachua, Bradford, Clay, and Union Counties, Florida [PDF]

open access: yes, 1964
A study of the water resources of Alachua, Bradford, Clay, and Union counties, Florida (fig. 1), was made by the Water Resources Division of the U. S. Geological Survey in cooperation with the Florida Geological Survey during the period 1957-61.
Cagle, Joseph W.   +3 more
core  

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

open access: yesAdvanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang   +7 more
wiley   +1 more source

Mineralogical appraisal and beneficiation tests on some industrial minerals from Zambia [PDF]

open access: yes, 1991
In March 1990, a visit to Zambia was made by D A Briggs of the Mineralogy and Petrology Group on behalf of the British Geological Survey/Overseas Development Administration project "Minerals for Development". The visit, which was described in Technical
Briggs, D.A., Mitchell, C.J.
core  

Block Copolymers: Emerging Building Blocks for Additive Manufacturing

open access: yesAdvanced Functional Materials, EarlyView.
This review addresses how block copolymer (BCP) physics and rheology have led to the widespread use of BCPs in advanced additive manufacturing techniques, with particular emphasis on the untapped potential of these nanostructured materials toward achieving multi‐scale architected materials with unique, programmable material properties.
Alice S. Fergerson   +3 more
wiley   +1 more source

Database of surface water diversion sites and daily withdrawals for the Upper Colorado River Basin, 1980–2022

open access: yesScientific Data
The Colorado River drains about 8% of the conterminous United States, provides water for 40 million people, and is one of the most overallocated rivers in the world. As the upper Colorado River Basin (UCOL) contributes an estimated 92% of the total basin
Samuel F. Lopez   +6 more
doaj   +1 more source

Seismic Prediction of Shallow Unconsolidated Sand in Deepwater Areas

open access: yesJournal of Marine Science and Engineering
Recently, shallow gas fields and hydrate-bearing sand in the deepwater area of the northern South China Sea have been successively discovered, and the accurate prediction of shallow sands is an important foundation.
Jiale Chen   +7 more
doaj   +1 more source

Determination of Rare Earth Elements in Ultra-fine Rock and Soil Samples by ICP-MS Using Microwave Digestion

open access: yesYankuang ceshi, 2020
BACKGROUND The sampling weight can be as low as milligram level when the contents of rare earth elements in rock and soil samples are determined by inductively coupled plasma-mass spectrometry (ICP-MS).
WANG Na   +5 more
doaj   +1 more source

Geological Survey of Alabama [PDF]

open access: yes
This is the homepage of the Geological Survey of Alabama (GSA), a data gathering and research agency that explores and evaluates the mineral, water, energy, biological, and other natural resources of the State of Alabama and conducts basic and applied ...

core   +2 more sources

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