Results 61 to 70 of about 16,123 (269)

Lacunarity for Amalgams

open access: yesRocky Mountain Journal of Mathematics, 1987
Given a measurable function on \({\mathbb{R}}\) and \(p,q\in [0,1]\) let \(\| f\|_{p,q}=[\sum_{n\in {\mathbb{Z}}}((\int_{I_ n}| f|^ p)^{1/p})^ q]^{1/q}\) where \(I_ n=[n,n+1)\). The space \((L^ p,\ell^ q)\) of functions for which \(\| f\|_{p,q}
openaire   +3 more sources

The Role of Iron‐Hyponitrite Intermediates in Biology and Insights From Synthetic Model Complexes

open access: yesChemistry – A European Journal, EarlyView.
Despite the difference in active site architecture, NO reduction by different NOR enzymes is expected to be linked by a common intermediate: hyponitrite (N2O22−). However, experimentally, very little is known about the coordination chemistry of iron with hyponitrite and the expected Fe‐hyponitrite intermediates.
Michael O. Lengel, Nicolai Lehnert
wiley   +1 more source

THE EFFECT OF THE APPLICATION OF 20% CARBAMIDE PEROXIDE ON THE GLASS IONOMER CEMENT TYPE II SURFACE HARDNESS

open access: yesJournal of Dentistry Indonesia, 2015
In dental bleaching, carbamide peroxide is usually used at concentration of 10%, 15%, to 20%. The result of our previous study showed that the application of 10% and 15% carbamide peroxide bleaching agent has increased the surface hardness of glass ...
Ali Noerdin   +2 more
doaj   +1 more source

Do CSR Efforts Reduce Environmental Decoupling: Evidence From S&P 500 Firms

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study investigates the impact of Corporate Social Responsibility (CSR) committees and CSR‐focused employee training on environmental decoupling. Using panel data of 2489 firm‐year observations from S&P 500 firms between 2009 and 2022, we employ fixed‐effects models to examine how CSR governance mechanisms influence the alignment between ...
Burcu Gürol   +2 more
wiley   +1 more source

Mineralogical and technological features of gold from placers of the southern slope of Belaya Gora (Khabarovsk Krai) and stages of its formation

open access: yesGeoresursy
The gold-placer deposit of Pokrovsky-Verny streams is formed on the southern slope of Belaya Gora (Khabarovsk Krai), where streams drain gold formations of the same-name deposit.
N. A. Lavrik   +2 more
doaj   +1 more source

Tree‐Boost–Guided CNN–BiLSTM–Transformer for Solar Irradiance Forecasting: Cross‐Regional Evidence for Sustainable Energy Planning

open access: yesEnergy Science &Engineering, EarlyView.
This graphical abstract illustrates a reproducible pipeline that combines gradient‐boosting‐based feature selection with a CNN–BiLSTM–Transformer model to forecast solar irradiance across multi‐site satellite and ground datasets, delivering robust, high‐accuracy predictions that support sustainable grid planning and reliable PV integration.
Muhammad Farhan Hanif   +5 more
wiley   +1 more source

Evaluación de la dureza superficial en amalgamas en función de tipos de aleaciones, momentos y tipos de pulimentos

open access: yesMaterials Research, 2003
The aim of this study was to analyze in vitro surface hardness (micro-indentation tester Wolpert) of different types of amalgam alloys varying the technique and polishing time. Tested were the amalgam: Velvalloy, Permite e Dispersalloy. For each material,
Juliana Panazzolo Ramos   +2 more
doaj   +1 more source

Optimization of Lithium‐Mediated Nitrogen Reduction via Electrolyte Engineering

open access: yesExploration, EarlyView.
Ammonia production today relies on the energy‐demanding Haber–Bosch process. By optimizing lithium‐mediated nitrogen reduction through electrolyte engineering, this work outlines strategies to make ammonia synthesis cleaner, more efficient, and more sustainable.
Xiyang Cai   +7 more
wiley   +1 more source

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

open access: yesGeological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang   +6 more
wiley   +1 more source

Dental Amalgam-Civa Toksisitesi

open access: yesAnkara Medical Journal, 2016
Dental amalgam diş hekimliğinde sıklıkla kullanılan bir restorasyon materyalidir. Son yıllarda içeriğindeki civa sebebiyle sıklıkla çeşitli nörolojik hastalıklar ile ilişkilendirilmektedir.
Esra Ceren Tatlı   +1 more
doaj   +1 more source

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