Results 11 to 20 of about 123,753 (242)
Патология кровообращения и кардиохирургия, 2018 Background. Heart valve bioprostheses made from glutaraldehyde-treated bovine and porcine pericardia are widely used in open and transcatheter valve surgeries.
I. Yu. Zhuravleva +9 more
doaj +1 more source
Molecules, 2019 Phosphorus-containing flame retardants synthesized from renewable resources have had a lot of impact in recent years. This article outlines the synthesis, characterization and evaluation of these compounds in polyesters and epoxy resins.
Jacob Sag +5 more
doaj +1 more source
Antiferromagnetic properties of a water vapor-inserted $YBa_2Cu_3O_{6.5}$ compound studied by NMR, NQR and $μ$ SR [PDF]
Physical Review B 70, 054506 (2004), 2003 We present a detailed NQR, NMR and $\mu $SR study of a magnetic phase obtained during a topotactic chemical reaction of YBa$_{2}$Cu$_{3}$O$_{6.5}$ high- temperature superconductor with low-pressure water vapor. Our studies give straightforward evidence that the ''empty'' Cu(1) chains play the role of an easy water insertion channel.
arxiv +1 more source
Phenomenological characterization of sequential dual-curing of off-stoichiometric "thiol-epoxy" systems: Towards applicability [PDF]
, 2017 An extensive characterization of a sequential dual-curing system based on off-stoichiometric “thiol-epoxy” mixtures was carried out using thiol compounds of different functionality.
Belmonte, Alberto +3 more
core +1 more source
Antiferromagnetism in hydrated 123 compounds [PDF]
Pis'ma v ZhETF v.69, iss.10, pp.739-744 (1999), 1999 Copper nuclear quadrupole resonance (NQR) and zero field nuclear magnetic resonance (ZFNMR) studies of YBa$_2$Cu$_3$O$_{6.5}$ show that a magnetic phase appears in underdoped 123 superconductors treated in ambient wet air. The studies give convincing evidence that the ``empty'' CuO chains play the role of easy water insertion channels.
arxiv +1 more source
Effect of Incorporation of Inhibitor Loaded Mesoporous Silica on the Corrosion Behavior of Epoxy Coatings [PDF]
Journal of Ultrafine Grained and Nanostructured Materials, 2013 In this research, mesoporous silica was applied as the host of corrosion inhibitor (molybdate). The loaded mesoporous silica was dispersed in an epoxy matrix. The composite was then coated on the mild steel plate.
Mahdi Yeganeh +2 more
doaj +1 more source
Dammarane-Type Triterpenoids from The Stembark of Aglaia argentea (Meliaceae)
Jurnal Kimia Valensi, 2018 Two dammarane-type triterpenoids, 20S,24S-epoxy-3α,25-dihydroxydammarane (1) and 3α-acetyl-20S,24S-epoxy-3α,25-dihydroxydammarane (2), have been isolated from the stembark of Aglaia argentea.
Ace Tatang Hidayat +8 more
doaj +1 more source
Scientific Reports, 2022 Bioactive compounds were extracted from a locally available brittle star; Ophiocoma dentata, collected from the Red Sea, Egypt. Two new sesquiterpenoids; 8, 11-epoxy-9(15)-himachaladiene-4-ol (O8-ophiocomane) and, 11-epoxy-9(15)-himachaladiene-4-ol (O7 ...
Shaymaa E. El Feky +7 more
doaj +1 more source
The mechanical and electrical properties of direct-spun carbon nanotube mat-epoxy composites [PDF]
Carbon 2019, 2019 Composites of direct-spun carbon nanotube (CNT) mats and epoxy are manufactured and tested in order to determine their mechanical and electrical properties. The mats are spun directly from a floating catalyst, chemical vapour deposition reactor.
arxiv +1 more source
Corrosion protection of carbon steel by an epoxy resin containing organically modified clay [PDF]
, 2007 This study focusses on the use of montmorillonite clay (MMT) treated with an organic compound (aminotrimethylphosphonic acid (ATMP)) and dispersed in an epoxy resin to improve corrosion protection of carbon steel.
Hang, To Thi Xuan +5 more
core +2 more sources