Results 131 to 140 of about 583,413 (370)

Enhancing Deposit Exploitation Efficiency Utilizing Small-Diameter Radial Boreholes via Hydraulic Drilling Nozzles for Optimal Resource Recovery

open access: yesApplied Sciences
The exploration and development of new hydrocarbon deposits is facing increasing challenges as the global shift to renewable energy sources, such as shallow geothermal deposits, wind farms, and photovoltaics, reduces the dependence on hydrocarbons.
Przemyslaw Toczek, Rafal Wisniowski
doaj   +1 more source

Wetting of Surface Grafted Hydrophilic‐b‐Hydrophobic Block Copolymer Brushes

open access: yesAdvanced Functional Materials, EarlyView.
The wetting properties of surface grafted diblock copolymer brushes are influenced by the thickness of the hydrophilic bottom block and the hydrophobic top block. The surface adapts in presence of water and the contact angles of the bottom block shine through. Abstract The wetting of diblock copolymer brushes by water is studied.
Benjamin Leibauer   +7 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

Improving Energy Efficiency in the Management of Drilling Waste from Trenchless Gas and Power Pipeline Construction Through the Implementation of Photovoltaic Panels and Circular Economy Principles

open access: yesEnergies
The modern construction of transmission networks for transporting energy resources (e.g., crude oil, gas, hydrogen) or electricity is increasingly being carried out using trenchless technologies.
Aleksandra Jamrozik   +2 more
doaj   +1 more source

Presidential Power in Foreign Policy: Richard Nixon and the Era of Détente with the Soviet Union and China [PDF]

open access: yes, 2016
This project analyzes the role and limits of the presidential policy-making in foreign policy through an examination of President Richard Nixon’s policy of détente with the Soviet Union and China during the 1960s and 1970s.
Drilling, Gregory Donald
core   +1 more source

Stable Radical Polymers as New Electroactive Materials: Synthesis, Properties, and Emerging Applications

open access: yesAdvanced Functional Materials, EarlyView.
This review covers the recent advances in the synthesis and properties of stable radical polymers (SRPs) and presents their applications in electronics, magnetics, optoelectronics, and biomedicines. The review concludes with a discussion of the challenges in radical chemistry and functionalization, while shedding light on the groundbreaking potential ...
Yufeng Xiong   +11 more
wiley   +1 more source

Enhanced Terahertz Spectroscopy of a Monolayer Transition Metal Dichalcogenide

open access: yesAdvanced Functional Materials, EarlyView.
An ad‐hoc engineered metallic surface is employed to perform enhanced terahertz spectroscopy of a monolayer transition metal dichalcogenide (TMD). Thanks to a local absorption boost of 104, this technique allows for the extraction of the phonon resonance features and effective permittivity of the 2D material, paving the way for the rational design of ...
Xin Jin   +11 more
wiley   +1 more source

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