Results 111 to 120 of about 634,511 (275)

Mineral oil-based drilling fluid formulation using biosurfactant and nanoparticles with good rheological behavior and excellent H2S scavenging capability

open access: yesJCIS Open
There are two commonly used drilling fluids, namely water-based muds (WBMs) and oil-based muds (OBMs); however, the latter type is more desirable for drilling unconventional oilfield reserves.
Sagheer A. Onaizi
doaj   +1 more source

Wavelength‐Dependent Differential Amplification of Raman Scattering by Chiral Gold Nanorods for Multiplexed Encoding

open access: yesAdvanced Functional Materials, EarlyView.
The SERS spectra of reporter molecules adsorbed on chiral gold nanorods depends on the handedness of circularly polarized light (CPL‐SERS). The bisignate plasmonic CD spectra of chiral nanorods provides wavelength‐dependent CPL‐SERS. Selective discrimination of chiral nanorod handedness and different Raman reporters allow highly sensitive codification ...
Andrés Serrano‐Freijeiro   +9 more
wiley   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

The utilization of spent palm cooking oil for formulating oil-based drilling muds with excellent H2S scavenging capability

open access: yesPetroleum Research
In this study, a spent palm cooking oil-based mud with an excellent H2S scavenging capability induced by the inclusion of a small quantity of potassium permanganate is formulated and tested for the first time.
Sagheer A. Onaizi
doaj   +1 more source

Cryogenic Fluid Management Experiment (CFME) trunnion verification testing [PDF]

open access: yes
The Cryogenic Fluid Management Experiment (CFME) was designed to characterize subcritical liquid hydrogen storage and expulsion in the low-g space environment.
Bailey, W. J., Fester, D. A.
core   +1 more source

Materials for hydrogen storage [PDF]

open access: yes, 2015
In the present article two systems studied theoretically in the Physics De-partment of the Universidad Nacional del Sur are presented. Both are related to the Physics of Ma-terials, more specifically to intermetallic hydrogen storage materials, and have ...
Pronsato, Maria Estela   +1 more
core  

Photocatalytic Versus Stoichiometric Hydrogen Generation Using Mesoporous Silicon Catalysts: The Complex Role of Sacrificial Reagents

open access: yesAdvanced Functional Materials, EarlyView.
This study highlights the importance of accounting for stoichiometric hydrogen produced when utilizing Si photocatalysts. The stoichiometric contribution is sacrificial reagent dependent and decreases with increasing sterics around the catalyst surface.
Sarrah H. Putwa   +4 more
wiley   +1 more source

Online verification of adjustable robust optimization for electric hydrogen integrated energy systems with comprehensive demand response

open access: yesInternational Journal of Electrical Power & Energy Systems
Traditional energy systems are gradually transitioning to new energy systems dominated by clean sources such as wind, solar, and hydrogen. As the penetration of renewable energy increases, the high uncertainty in their output presents significant ...
Peng Ren   +4 more
doaj   +1 more source

Exploiting the Functionality of Cerium Oxide‐Modified Carbon Nanohorns Catalysts Toward Enhanced CO2 Reduction Performance

open access: yesAdvanced Functional Materials, EarlyView.
A cerium oxide‐carbon nanohybrid catalyst is synthesized via two distinct routes and is integrated into H‐type cells and gas diffusion layers (GDLs) to enhance electrochemical performance. Structural variations significantly affect performance, with the solvothermal sample exhibiting higher current densities.
Alessia Pollice   +9 more
wiley   +1 more source

Modulating Electrochemical CO2 Reduction Pathways via Interfacial Electric Field

open access: yesAdvanced Functional Materials, EarlyView.
Engineering interfacial electric fields in Cu/ITO electrodes enables precise control of CO2 reduction pathways. Charge transfer from Cu to ITO generates positively charged Cu species that steer selectivity from ethylene toward methane. This work demonstrates how interfacial electric‐field modulation can direct reaction intermediates and transform ...
Mahdi Salehi   +7 more
wiley   +1 more source

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