Results 11 to 20 of about 609,560 (298)

(La0.97RE0.01Yb0.02)2O2S Nanophosphors Converted from Layered Hydroxyl Sulfate and Investigation of Upconversion Photoluminescence (RE=Ho, Er)

open access: yesNanoscale Research Letters, 2017
Phase-pure (La0.97RE0.01Yb0.02)2O2S upconversion (UC) nanophosphors (average crystallite size ~ 45 nm; RE=Ho, Er) were annealed from their hydrothermally crystallized layered hydroxyl sulfate precursors in flowing hydrogen at 1200 °C for 1 h, with water ...
Ji-Guang Li   +5 more
doaj   +1 more source

Integration of feature distributions for colour texture segmentation [PDF]

open access: yes, 2004
This paper proposes a new framework for colour texture segmentation and determines the contribution of colour and texture. The distributions of colour and texture features provides the discrimination between different colour textured regions in an ...
P.F. Whelan   +5 more
core   +2 more sources

Burning question: Are there sustainable strategies to prevent microbial metal corrosion?

open access: yesMicrobial Biotechnology, 2023
The global economic burden of microbial corrosion of metals is enormous. Microbial corrosion of iron‐containing metals is most extensive under anaerobic conditions.
Di Wang   +3 more
doaj   +1 more source

Effect of in-situ synthesized TiB2 on microstructure and mechanical property of Al/TiB2-SiC interpenetrating phase composites

open access: yesJournal of Asian Ceramic Societies, 2022
Al/TiB2-SiC composites were prepared based on TiB2-SiC porous ceramic preforms. The advantages of this work were characterized by the in-situ synthesized TiB2 in porous ceramic preforms which directly formed interconnected pores as well as TiB2-SiC ...
Xin Zhang, Xin-Yan Yue, Hong-Qiang Ru
doaj   +1 more source

Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water Splitting

open access: yesInternational Journal of Photoenergy, 2014
Sn- or Ge-doped hematite thin films were fabricated by annealing alloyed films for the purpose of photoelectrochemical (PEC) water splitting. The alloyed films were deposited on FTO glass by magnetron sputtering and their compositions were controlled by ...
Song Li   +4 more
doaj   +1 more source

Simple Fabrication of Superhydrophobic Nickel Surface on Steel Substrate via Electrodeposition

open access: yesInternational Journal of Electrochemical Science, 2017
Preparation of artificial superhydrophobic surfaces are in urgent demand in a specific domain. In the study, we obtained superhydrophobic nickel surface on steel substrates via electrodeposition nickel process and stearic acid modification, which are ...
Junyang Tan   +3 more
doaj   +1 more source

Evaluation of local orientation for texture classification [PDF]

open access: yes, 2008
The aim of this paper is to present a study where we evaluate the optimal inclusion of the texture orientation in the classification process. In this paper the orientation for each pixel in the image is extracted using the partial derivatives of the ...
Ilea, Dana E.   +2 more
core   +2 more sources

Automatic texture segmentation for content-based image retrieval application [PDF]

open access: yes, 2006
In this article, a brief review on texture segmentation is presented, before a novel automatic texture segmentation algorithm is developed. The algorithm is based on a modified discrete wavelet frames and the mean shift algorithm.
Fauzi, M.F.A., Lewis, P.H.
core   +2 more sources

Development of novel lightweight and cost-effective Mg–Ce–Al wrought alloy with high strength

open access: yesMaterials Research Letters, 2021
The low microalloying content and high yield strength of 365 MPa have been achieved simultaneously in extruded Mg–Ce–Al alloy which is mainly ascribed to the unexpected grain refinement (mean size of ∼420 nm).
Hucheng Pan   +6 more
doaj   +1 more source

Charge-Transfer Process in Surface-Enhanced Raman Scattering Based on Energy Level Locations of Rare-Earth Nd3+-Doped TiO2 Nanoparticles

open access: yesNanomaterials, 2021
Surface-enhanced Raman scattering (SERS) for semiconductor nanomaterial systems is limited due to weak Raman signal intensity and unclear charge-transfer (CT) processes for chemical enhancement.
Zihao Zhao   +3 more
doaj   +1 more source

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