Results 151 to 160 of about 3,531,769 (312)

Electronic and Structural Determinants of Activity and Stability in Noble Metal OER Catalysis

ChemCatChem, Volume 18, Issue 7, 14 April 2026.
Activity and stability in noble metal oxygen evolution reaction (OER) catalysts arise from coupled electronic and structural effects at the catalyst surface. Electronic engineering, crystallographic control, lattice modulation, and surface engineering tune the d‐band structure, oxidation state, strain, and coordination environment of noble metal based ...
Gordon A. Ochsner, Ryusuke Mizuochi, Lianzhou Wang, Zhiliang Wang   +3 more
wiley   +1 more source

Sintered silicon carbide molded body and method for its production [PDF]

Sintered silicon carbide shapes are described. They are produced by using a composition containing an oxide of at least one element chosen from the group: Li, Be, Mg, Si, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Nb, Mo, Ba, Tc, Ta, W and Th as a supplement to ...
Ohira, K., Omori, M., Sendai, M.
core   +1 more source

How Effective Is Vitamin C for Gingival Depigmentation? A Scoping Review

Clinical and Experimental Dental Research, Volume 12, Issue 2, April 2026.
ABSTRACT Objectives Excessive gingival pigmentation can be treated by surgically removing the pigmented gingival tissue with a scalpel, bur, LASER, electrocautery, cryotherapy, chemical peeling, or masking with free gingival grafts. Recently, vitamin C (ascorbic acid), in gel, powder, or liquid has been used alone or as an adjunct to micro‐needling or ...
Shubhankar Mehrotra, Malvika Shyamkumar, Shravya Marcherla, Aditi Chopra, Marwa Madi   +4 more
wiley   +1 more source

Temperature‐Dependent Investigation of the S‐Branch Raman Linewidth in CO2 via Time‐Resolved Rotational CARS

Journal of Raman Spectroscopy, Volume 57, Issue 4, Page 725-734, April 2026.
We studied the temporal evolution of the rotational coherent anti‐Stokes Raman scattering (RCARS) signal of CO2 to determine the S‐branch Raman linewidth, which is an essential parameter for accurate spectral modeling in RCARS gas‐phase diagnostics. We found a non‐monotonic J‐dependence of the S‐branch Raman linewidth not accounted for in previously ...
Henry Misoi, Joy Muriithi, Jonas I. Hölzer, Nancy W. Karuri, Thomas Seeger   +4 more
wiley   +1 more source

Sequentially evaporated thin Y-Ba-Cu-O superconductor films: Composition and processing effects [PDF]

Thin films of YBa2Cu3O(7-beta) have been grown by sequential evaporation of Cu, Y, and BaF2 on SrTiO3 and MgO substrates. The onset temperatures were as high as 93 K while T sub c was 85 K. The Ba/Y ratio was varied from 1.9 to 4.0.
Bhasin, Kul B., Rohrer, Norman J., Valco, George J., Warner, Joseph D.   +3 more
core   +1 more source

Recent Advances in Hafnium Oxide Nanomaterials: From Controlled Synthesis, Structure, and Surface Engineering to Biomedical Applications

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Hafnium oxide (HfO2) nanoparticles (NPs), derived from a rare‐metal element, have gained increasing attention as a versatile class of functional nanostructures with unique optical, dielectric, and surface properties that enable diverse biomedical applications. As a representative rare‐metal oxide, HfO2 NPs with well‐defined architectures offer
Mothana Hussein Tarawneh, Mohammed Ali Dheyab, Azhar Abdul Rahman, Mutaz Mohammad Alsardi, Azlan Abdul Aziz, Saleh T. Alanezi, Wesam Abdullah, Sara Abdulwahab, Mehran Ghasemlou   +8 more
wiley   +1 more source

Drivers of Benthic Iron Fluxes and the Pore‐Water Iron Isotopic Signature in Surface Sediments of South Georgia Fjords, Sub‐Antarctica

Global Biogeochemical Cycles, Volume 40, Issue 4, April 2026.
Abstract Benthic iron (Fe) fluxes from coastal sediments support phytoplankton blooms downstream of subpolar islands. We combine solid‐phase and pore‐water geochemical data, including its iron isotopic signature (δ56Feaq), to identify the main drivers of benthic Fe fluxes from sub‐Antarctic fjord and shelf sediments of South Georgia, and to evaluate ...
Berenice Ebner, Susann Henkel, Peter Kraal, Daniel Müller, Male Köster, Michael Staubwasser, Katja Laufer‐Meiser, Laura Kattein, Walter Geibert, Sabine Kasten   +9 more
wiley   +1 more source

Stabilization of the Benzene Radical Trianion in an Inverse‐Sandwich Yttrium Complex

Angewandte Chemie, Volume 138, Issue 13, 23 March 2026.
A new type of benzene anion state is born: The unprecedented benzene radical trianion embedded in an inverse‐sandwich yttrium complex was synthesized by a one‐electron chemical reduction of its benzene dianion precursor using potassium graphite in the presence of [2.2.2]‐cryptand.
Weiqing Mao, Saroshan Deshapriya, Shenglai Yao, Christian Lorent, Matthias Driess, Selvan Demir   +5 more
wiley   +2 more sources

Optimization of the NiCrAl-Y/ZrO-Y2O3 thermal barrier system [PDF]

The effects of bond and thermal barrier coating compositions, thicknesses, and densities on air plasma spray deposited Ni-Cr-Al-Y/ZrO2-Y2O3 life were evaluated in cyclic furnace oxidation tests at temperatures from 1110 to 1220 C.
Stecura, S.
core   +1 more source

Mechanical and Dielectric Properties of Porous Slip Cast Silicon Nitride: Yttrium Oxide‐Aluminum Oxide Sintering Aids

International Journal of Applied Ceramic Technology, Volume 23, Issue 2, April 2026.
Silicon nitride samples were slip cast using yttrium oxide‐aluminum sintering aids to fabricate porous materials for radar frequency windows. Microstructure and phase composition were determined. Flexural strength, elastic modulus, dielectric constant, and loss tangent were collected from room temperature to elevated temperatures up to 1200°C.
Averyonna R. Kimery, Matthew A. Thompson, Keith S. Caruso, Collin C. McClain, Carlos J. Martinez, Rodney W. Trice   +5 more
wiley   +1 more source