Results 1 to 10 of about 1,176 (140)

Synthesis and characterization of branched multiblock copolymers of polyhydroxybutyrate (PHB) autoxidized fatty acid and polymethylmethacrylate (PMMA) [PDF]

open access: yesScientific Reports
The branched multiblock copolymer based on fatty acid, methyl methacrylate and PHB was first time synthesized. Autoxidation is the reaction of unsaturated fatty acids with air oxygen leading to macroperoxide initiators. Poly (3-hydroxy butyrate), PHB, is
Baki Hazer   +2 more
doaj   +2 more sources

Accuracy of different impression materials in parallel and nonparallel implants

open access: yesDental Research Journal, 2015
Background: A precise impression is mandatory to obtain passive fit in implant-supported prostheses. The aim of this study was to compare the accuracy of three impression materials in both parallel and nonparallel implant positions.
Mahroo Vojdani   +2 more
doaj   +1 more source

Preparation and characterization of innovative poly(butylene adipate terephthalate)-based biocomposites for agri-food packaging application [PDF]

open access: yes, 2022
The present work reports on the preparation and subsequent mechanical, morphological and thermal characterization of composites based on poly(butylene adipate terephthalate) (PBAT), reinforced with micro-particles of inorganic bioabsorbable calcium ...
Alberto Giubilini   +6 more
core   +5 more sources

Photochemical properties and activity of water-soluble polymer/c(60) nanohybrids for photodynamic therapy. [PDF]

open access: yes, 2012
Water-soluble star-like poly(vinyl alcohol)/C(60) and poly{[poly(ethylene glycol) acrylate]-co-(vinyl acetate)}/C(60) nanohybrids are prepared by grafting macroradicals onto C(60) and are assessed as photosensitizers for photodynamic therapy.
A. Debuigne   +8 more
core   +5 more sources

Sediment grain size determines microplastic exposure landscapes for sandy beach macroinfauna [PDF]

open access: yes, 2021
Despite the global occurrence of microplastic contamination on sandy beaches, evidence of microplastic distribution within beaches remains contradictory.
Celentano, Eleonora   +6 more
core   +1 more source

Microplastics and synthetic particles ingested by deep-sea amphipods in six of the deepest marine ecosystems on Earth [PDF]

open access: yes, 2019
Funding Funding for the laboratory work and analysis was from Newcastle University internal support. This work was supported by the 2007–2010 HADEEP project, funded by the Nippon Foundation (2009765188) and the Natural Environmental Research Council (NE ...
Brooks, L. S.R.   +5 more
core   +2 more sources

Elevação da taxa de estruturação de concretos para impressão 3D: o efeito de aditivos modificadores de viscosidade [PDF]

open access: yes, 2020
In the last decades, 3D printing has emerged as a promising new paradigm for manufacturing. Even in the civil construction industry, it has gained attention from companies and researchers around the world.
Hasse, J. A.   +3 more
core   +2 more sources

Chiral catalysts immobilized on achiral polymers: effect of the polymer support on the performance of the catalyst [PDF]

open access: yes, 2018
Positive effects of the polymeric support on the performance of supported chiral catalysts, in terms of activity, stability and selectivity–enantioselectivity, have been reported when the support is properly selected and optimized opening the way to the ...
Altava, Belen   +3 more
core   +2 more sources

Gas separations using mixed matrix membranes [PDF]

open access: yes, 2000
Mixed matrix membranes capable of separating carbon dioxide from mixtures including carbon dioxide and methane, and processes for purifying methane using the membranes, are disclosed.
De Q. Vu   +3 more
core   +1 more source

Complete depigmentation of a small aperture corneal inlay implanted for compensation of presbyopia [PDF]

open access: yes, 2017
We describe a case of late-onset remarkable depigmentation of a small aperture corneal inlay implanted for presbyopia compensation. The patient was a participant in a clinical trial designed to evaluate the safety and efficacy of the AcuFocus (TM) ACU ...
Beer, Sandra Maria Canelas [UNIFESP]   +5 more
core   +3 more sources

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