Results 111 to 120 of about 301,621 (273)

DFT Insight Into Physical Properties of Halide Ions Replacements in Oxo‐Selenate Halide Compounds for Photovoltaic Application

open access: yesEnergy Science &Engineering, EarlyView.
Using density functional theory (CASTEP, GGA–PBE), the structural, electronic, optical, and mechanical properties of YSeO₃X (X = F, Cl, Br, and I) compounds are systematically investigated. The materials have exhibited structural stability, tunable band gaps, strong optical absorption, anisotropic ductile behavior, and promising potential for ...
Nawishta Jabeen   +5 more
wiley   +1 more source

Harnessing Free Radical Scavenging Potential of Caffeic Acid as a Nutraceutical—A Review

open access: yesFood Safety and Health, EarlyView.
Caffeic acid has emerged as a promising bioactive molecule with multiple pharmacological properties, including antioxidant, antimicrobial, anti‐inflammatory, organ protective properties and metal‐chelating ability. This review emphasizes the dietary sources, structural characteristic, molecular mechanism underlying health promoting effects of caffeic ...
Pavitra Behra   +2 more
wiley   +1 more source

The optical absorption of gamma irradiated and heat-treated natural quartz

open access: yesMaterials Research, 2005
Quartz with aluminum as impurity absorbs energy from ionizing radiation and modifies its color. Colorless quartz becomes smoky or dark smoky (morion quartz) when exposed to gamma rays.
Eduardo Henrique Martins Nunes   +1 more
doaj   +1 more source

Farmer‐Led Strategies for Water Conservation in the Urmia Lake Basin, Iran

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT This study examines the urgent issues of water scarcity and limited farmer livelihoods in the Urmia Lake basin. To address these challenges, we apply the Governance, Autonomy, Integration, and Needs orientation (GAIN) methodology. Our participatory approach revealed that farmers prioritised actionable measures for water management, yield ...
Sina Besharat   +20 more
wiley   +1 more source

Valence electron distribution in La2 Li½ Cu½ O4, Nd2 Li½ Ni½ O4, and La2 Li½ Co½ O4

open access: yes, 1998
The distribution of valence electrons between transition metals (TM) and oxygen has been studied via X-ray absorption near-edge fine structure (XANES) at the TM-L2,3 and O-K thresholds for La2 Li½ Cu½ O4 , Nd2 Li½ Ni½ O4 , and La2 Li½ Co½ O4 . Simulations of the TM-L2,3 XANES by charge-transfer multiplet calculations result in 3d-hole concentrations ...
Hu, Z.   +5 more
openaire   +1 more source

The charge ordered state in half-doped Bi-based manganites studied by $^{17}$O and $^{209}$Bi NMR

open access: yes, 2005
We present a $^{209}$Bi and $^{17}$O NMR study of the Mn electron spin correlations developed in the charge ordered state of Bi$_{0.5}$Sr$_{0.5}$MnO$_{3}$ and Bi$_{0.5}$Ca$_{0.5}$MnO$_{3}$.
A. Gerashenko   +15 more
core   +1 more source

REVEAL AD ‐ Prevalence of Moderate and Severe Atopic Dermatitis in Ireland: A Cross‐ Sectional, Real World Study of a Secondary Care Population

open access: yesJEADV Clinical Practice, EarlyView.
ABSTRACT Background Atopic dermatitis (AD) is a common inflammatory skin disease. However, limited data exist on its prevalence and incidence in Irish secondary care. Objectives REVEAL AD had two distinct but related objectives: (1) Estimate prevalence of moderate‐to‐severe AD in patients aged 12 years and older presenting to secondary care clinics in ...
Oisín S. Gough   +6 more
wiley   +1 more source

Single‐Atom Ruthenium Sites on Cobalt‐Titanium Surfaces for Efficient and Selective Chloride Electrolysis

open access: yesSmall, EarlyView.
This study presents an advanced electrocatalyst featuring atomically dispersed Ru single‐atom sites anchored on a cobalt–titanium oxide support. The use of a Ru–EDTA precursor enables uniform dispersion and prevents agglomeration during thermal treatment.
Nael G. Yasri   +3 more
wiley   +1 more source

Influence of W substitution on crystal structure, phase evolution and microwave dielectric properties of (Na0.5Bi0.5)MoO4 ceramics with low sintering temperature

open access: yesScientific Reports, 2017
In this work, the (Na0.5Bi0.5)(Mo1−xWx)O4 (x = 0.0, 0.5 and 1.0) ceramics were prepared via solid state reaction method. All the samples can be well densified at sintering temperature about ~720 °C.
Li-Xia Pang   +3 more
doaj   +1 more source

X-ray Crystallographic Characterization of the Co(II)-substituted Tris-bound Form of the Aminopeptidase from \u3cem\u3eAeromonas proteolytica\u3c/em\u3e [PDF]

open access: yes, 2007
The X-ray crystal structure of the Co(II)-loaded form of the aminopeptidase from Aeromonas proteolytica ([CoCo(AAP)]) was solved to 2.2 Å resolution. [CoCo(AAP)] folds into an α/β globular domain with a twisted β-sheet hydrophobic core sandwiched between
Bennett, Brian   +6 more
core   +1 more source

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