Results 81 to 90 of about 75,282 (220)

Photoluminescence Properties of Eu3+-activated Silicate Phosphors

open access: yesHigh Temperature Materials and Processes, 2017
The silicate-type and Eu3+-activated Sr3SiO5 and Mg3SiO5 were prepared through the high temperature solid state reaction method under an open atmosphere.
Öztürk Esra
doaj   +1 more source

Photocatalytic activity, optical and ferroelectric properties of Bi0.8Nd0.2FeO3 nanoparticles synthesized by sol-gel and hydrothermal methods

open access: yes, 2018
In this study, the effects of synthesis method and dopant Neodymium ion on the ferroelectric properties and photocatalytic activity of bismuth ferrite were studied.
Maleki, Hamed
core   +1 more source

Exercise limitations in amyloid cardiomyopathy assessed by cardiopulmonary exercise testing—A multicentre study

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 1326-1335, April 2025.
Abstract Aims Amyloid cardiomyopathy is caused by the deposition of light chain (AL) or transthyretin amyloid (ATTR) fibrils, that leads to a restrictive cardiomyopathy, often resulting in heart failure (HF) with preserved or reduced ejection fraction.
Robin Willixhofer   +25 more
wiley   +1 more source

Hydride Nitrides: Crystal Structure Redetermination of LiSr2H2N and the Isostructural LiBa2H2N

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
The quaternary hydride nitrides LiSr2H2N and LiBa2H2N are obtained in a non‐centrosymmetric crystal structure, different from previous reports. Crystal growth of the honey‐ and pale‐yellow compounds and essentially single phase synthesis is successful using alkali metal flux. The resulting fully ordered structures do not account for a structural reason
Chen Liang, Rainer Niewa
wiley   +1 more source

A novel method for characterizing temperature-dependent elastic modulus and glass transition temperature by processing the images of bending cantilever slender beams at different temperatures

open access: yesAIP Advances, 2018
We propose a novel method for estimating the elastic modulus of several materials by processing the bending image of cantilever material sheets. The calculated results (tested for five samples) were consistent with data obtained by direct measurement ...
Nadya Amalia   +6 more
doaj   +1 more source

Application of Remote-sensing Data and Decision-Tree Analysis to Mapping Salt-Affected Soils over Large Areas

open access: yesRemote Sensing, 2009
Expert assessments for crop and range productivity of very-large arid and semiarid areas worldwide are ever more in demand and these studies require greater sensitivity in delineating the different grades or levels of soil salinity.
Abdelhamid A. Elnaggar, Jay S. Noller
doaj   +1 more source

Analysis of dynamic system optimum and externalities with departure time choice [PDF]

open access: yes, 2006
This paper aims to analyse the dynamic system optimal assignment with departure time choice, which is an important, yet underdeveloped area. The main contribution of this paper is the necessary conditions and the sensitivity analysis for dynamic system
Chow, A.H.F.
core  

Dry Reforming of Biogas Over Li–Ni–Al Catalysts: Influence of Li Incorporation Method

open access: yesGreenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Hydrogen is a promising source of energy, given the current context of depletion of fossil fuels and increased emissions of greenhouse gases. The technological route for obtaining this fuel from the dry reforming of biogas has received considerable attention from researchers, as it converts the polluting gases CH4 and CO2 into synthesis gas ...
Cristine Munari Steffens   +1 more
wiley   +1 more source

Thermodynamic investigations on the growth of CuAlO$_2$ delafossite crystals

open access: yes, 2017
Simultaneous differential thermal analysis (DTA) and thermogravimetric (TG) measurements with copper oxide/aluminum oxide mixtures were performed in atmospheres with varying oxygen partial pressures and with crucibles made of different materials.
Klimm, Detlef   +2 more
core   +1 more source

Diagnostic accuracy of phosphatase and tensin homolog loss in differentiating between atypical endometrial hyperplasia/endometrioid intraepithelial neoplasia and non‐atypical endometrial hyperplasia: A systematic review and meta‐analysis

open access: yesInternational Journal of Gynecology &Obstetrics, EarlyView.
Abstract Background Accurate distinction between atypical endometrial hyperplasia/endometrioid intraepithelial neoplasia (AH/EIN) and non‐atypical endometrial hyperplasia (EH) determines whether patients require hysterectomy or can be managed conservatively.
Kristina Shcherbatiuk   +6 more
wiley   +1 more source

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