Results 31 to 40 of about 389 (201)

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

open access: yesAdvanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje   +7 more
wiley   +1 more source

Experimental Investigations on the Strength and Serviceability of Biaxial Hollow Concrete Slabs

open access: yesJournal of Engineering, 2016
Biaxial hollow slab is a reinforced concrete slab system with a grid of internal spherical voids included to reduce the self-weight. This paper presents an experimental study of behavior of one-way prestressed concrete bubbled slabs.
Nazar Oukaili, Prof. Dr.   +1 more
doaj   +2 more sources

Experimental and numerical investigation of one-way reinforced concrete slabs using various strengthening systems

open access: yesCase Studies in Construction Materials, 2023
This paper presents different effective strengthening techniques to enhance the flexural strength of one-way reinforced concrete (RC) slabs. To assess the effectiveness of utilizing the suggested strengthening techniques, an experimental and numerical ...
Mahmoud A. El-Mandouh   +4 more
doaj   +1 more source

Solvent‐Free Thermal Defect Engineering in Molecular Frameworks With Volatile Linkers

open access: yesAdvanced Materials, EarlyView.
Thermal removal of neutral volatile linkers enables precise and solvent‐free generation of metal vacancies in MOFs. This strategy affords redox‐stable, coordinatively unsaturated FeII sites with tunable spin, ligand coordination, and catalytic behavior. The approach offers a general route to design defect‐functional materials through local coordination
Sonia Martínez‐Giménez   +9 more
wiley   +1 more source

Structural Behavior of Fibrous Reinforced Concrete Hollow Core One-Way Slabs Strengthening by C.F.R.P

open access: yesTikrit Journal of Engineering Sciences, 2016
A reinforced concrete hollow core one-way slab is one of the types of slabs used widely around the world in residential and industrial buildings to take advantage of them Economic and thermal insulation as well as to reduce the self-weight of the ...
وصيف مجيد   +2 more
doaj   +2 more sources

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Directional Flow of Confined Polaritons in CrSBr

open access: yesAdvanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak   +10 more
wiley   +1 more source

Structural behavior of reinforced concrete one-way slabs voided by polystyrene balls

open access: yesCase Studies in Construction Materials, 2019
In the last two decades, the use of voided (bubbled) slabs in constructions has been increased because of several advantages such as light self-weight, cost-saving, and accelerated construction schedules.
Thaar S. Al-Gasham   +2 more
doaj   +1 more source

Blast load response of one-way reinforced concrete slabs retrofitted with Fiber reinforced plastic [PDF]

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2018
The main aim of present work is to investigate structural behavior of one-way reinforced concrete slabs retrofitted with fiber reinforced plastic. Retrofitting is done to enhance bending and shear strength, to increase confinement and to repair damages ...
Rahbar-Ranji Ahmad , Esmaeli Azar
doaj   +1 more source

Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD

open access: yesAdvanced Materials, EarlyView.
Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo   +6 more
wiley   +1 more source

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