Results 21 to 30 of about 1,579,553 (292)

Composite bond strength improvement with thermal vibration: an experimental non-randomised study

open access: yesКубанский научный медицинский вестник, 2021
Background. Secondary caries formation is a relevant issue due to poor long-term quality of composite fillings, with inherent subsequent chipping and cracking of the material.
A. A. Gushchin   +3 more
doaj   +1 more source

Three-dimensionally confined diluted magnetic semiconductor clusters. Zn1−xMnxS [PDF]

open access: yes, 1991
We report the first example of a dilute magnetic semiconductor (DMS) confined in all three dimensions (DMS quantum dot). Zn0.93Mn0.07S clusters of not, vert, similar 25 Å diameter are successfully synthesized inside a glass matrix and fully characterized
Awschalom   +22 more
core   +1 more source

Hybrid membrane using polyethersulfone-modification of multiwalled carbon nanotubes with silane agent to enhance high performance oxygen separation

open access: yesInternational Journal of Science and Engineering, 2014
Mixed matrix membrane comprising carbon nanotubes embedded in polymer matrix have become one of the emerging technologies. This study was investigated in order to study the effect of silane agent modification towards carbon nanotubes (CNT) surface at ...
Tutuk Djoko Kusworo   +2 more
doaj   +1 more source

Synthesis and characterization of hybrid organic-inorganic materials based on sulphonated polyamideimide and silica [PDF]

open access: yes, 2010
The preparation of hybrid organic–inorganic membrane materials based on a sulphonated polyamideimide resin and silica filler has been studied. The method allows the sol–gel process to proceed in the presence of a high molecular weight polyamideimide,
Anita Hill   +26 more
core   +1 more source

PURIFICATION OF INDONESIAN NATURAL GRAPHITE AS CANDIDATE FOR NUCLEAR FUEL MATRIX BY ACID LEACHING METHOD: CHEMICAL CHARACTERIZATION

open access: yesUrania, 2020
PURIFICATION OF INDONESIAN NATURAL GRAPHITE AS CANDIDATE FOR NUCLEAR FUEL MATRIX BY ACID LEACHING METHOD: CHEMICAL CHARACTERIZATION. Graphite matrix in Pebble Bed Reactor (PBR) – High Temperature Gas Cooled Reactor (HTGR) has an important role as heat ...
Deni Mustika   +6 more
doaj   +1 more source

The biofilm matrix of Pseudomonas sp. OX1 grown on phenol is mainly constituted by alginate oligosaccharides [PDF]

open access: yes, 2006
The structure of the major constituent of the biofilm matrix produced by Pseudomonas sp. OX1, when grown on phenol as the sole carbon source is described.
ALFIERI, FABIANA   +6 more
core   +1 more source

Localized corrosion induced surface modifications of Al-Cu-Li alloy studied by ToF-SIMS 3D imaging

open access: yesnpj Materials Degradation, 2021
Three-dimensional (3D) time-of-flight secondary ion mass spectrometry (ToF-SIMS) imaging is a promising tool in the analysis of surface modifications of alloy matrix and intermetallic particles induced by localized corrosion due to its good spatial ...
Meicheng Li   +4 more
doaj   +1 more source

Data Processing Thresholds for Abundance and Sparsity and Missed Biological Insights in an Untargeted Chemical Analysis of Blood Specimens for Exposomics

open access: yesFrontiers in Public Health, 2021
Background: An untargeted chemical analysis of bio-fluids provides semi-quantitative data for thousands of chemicals for expanding our understanding about relationships among metabolic pathways, diseases, phenotypes and exposures.
Dinesh Kumar Barupal   +3 more
doaj   +1 more source

Mechanical, Crystallographic, and Microstructural Analysis of Polymer Composites Developed from Iron Filings and Polystyrene Wastes [PDF]

open access: yesMechanics of Advanced Composite Structures, 2022
The development of polystyrene composites, by solvent casting method, with iron filling waste as fillers is considered to improve the mechanical, crystallographic, and microstructural properties for definite uses.
A. Adeniyi   +4 more
doaj   +1 more source

Hilbert space renormalization for the many-electron problem [PDF]

open access: yes, 2015
Renormalization is a powerful concept in the many-body problem. Inspired by the highly successful density matrix renormalization group (DMRG) algorithm, and the quantum chemical graphical representation of configuration space, we introduce a new ...
Chan, Garnet Kin-Lic, Li, Zhendong
core   +3 more sources

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