Materials Literature
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Polypropylene (PP)/elastomer/fine filler particle ternary composite was prepared using polystyrene-block-poly(ethylene-butene)-block-polystyrene triblock copolymer (SEBS) or carboxylated SEBS (C-SEBS) as elastomer and calcium carbonate (CaCO3) having mean size about 160 nm as filler. First, SEBS (or C-SEBS) and CaCO3…
Three-dimensional, periodic macroporous frame of hydroxyapatite(HA) has been fabricated via a template-assisted colloidal processing technique. In the present method, colloidal template was firstly prepared with SiO2 spheres by gravitational sedimentation, which was then infiltrated with HA precursor prepared by sol-g…
We have investigated the possible computational advantages of using modified virtual orbitals in CI calculations of singlet-triplet energy gaps in diradical systems, where the magnetic moieties are bridged by organic unsaturated fragments. The addition to the Fock operator of supplementary positive point charges onto…
Ethanolamine (E) and diethanolamine (D) molecules were incorporated onto a precursor 3-glycidoxypropyltrimethoxysilane (G) agent, followed by organofunctionalization of the silica gel through homogeneous (A) and heterogeneous (B) routes, to yield SiEA, SiDA, SiEB and SiDB hybrids. These chemically organofunctionalized…
Wet etching behaviors of highly crystalline, well-textured Ga-doped zinc oxide (GZO) film with a thickness of 150 nm are investigated by using oxalic and formic acids. These two organic acids showed strikingly different etching characteristics with respect to etch rate and etch profile under 0.02 M of concentration an…
By suppressing the charge density wave ground state in the highly one-dimensional organic conductor (Per) 2 [Au(mnt) 2 ] with quasi-hydrostatic pressure, a superconducting (SC) phase is established above a pressure of 5 kbar. The onset of superconductivity is approximately 300 mK and the upper critical field (perpendi…
2-(3- and 4-N-methylpyridinium)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl 3-N-oxide (abbreviated as m- and p-MPYNN), the butyl derivative (m- and p-BuPYNN), 4-(N-ethylammonium)-2,2,5,5-tetramethylpiperidin-1-oxyl (ETEP) and N,N,N',N'-Tetramethyl-1,4-phenylenediamine radical cation (TMPD(+)) have been successf…
A new chromogenic and fluorogenic probe (1) exhibits a significant selectivity towards Cu(II) and Hg(II) ions to give the modulation of pyrene (Py) excimer emission. Also, its sensing behaviours towards Cu(II) and Hg(II) ions were investigated experimentally and computationally. Hg(II) complexation induces the ring op…
Interactions of a number of electrical engineering silicone rubbers with water and aqueous salt, weakly acidic, and weakly basic solutions were studied by measuring contact angles. A mechanism for leakage currents along the surfaces of silicone insulators was proposed.
In the framework of supramolecular chemistry, a three component system constituted by Fe3+/Fe2+, crystal violet lactone (CVL) and a spiropyran (SPI) leads to three coloured states, cyan, magenta and yellow, as well as a transparent state, each independently addressable by light and electrical input. The system profits…
Phase equilibria in the NaF-NaBr-Na 2 MoO 4 and KF-KCl-KBr have been investigated by differential thermal and X-ray powder diffraction analyses. In the NaF-NaBr-Na 2 MoO 4 system, a ternary eutectic and a ternary peritectic, melting and 506 and 570°C with specific enthalpy of melting of 241 and 328 kJ/kg, respectively…
Nephrogenic systemic fibrosis (NSF) or nephrogenic fibrosing dermopathy (NFD) clinically resembles scleromyxedema which develops in the setting of advanced chronic kidney diseases. Limited data exist about its epidemiology in Asian countries. A total of 153 magnetic resonance imaging (MRI) examinations, including 81 c…
Noninvasive whole-body near-infrared fluorescence imaging is now acknowledged as a powerful method for the molecular mapping of biological events in live small animals such as mouse models. With outstanding optical properties such as high fluorescence quantum yields and low photobleaching rates, quantum dots (QDs) are…
Kapton® polyimde (PI) is extensively used in solar arrays, spacecraft thermal blankets, and space inflatable structures. Upon exposure to atomic oxygen (AO) in low Earth orbit (LEO), Kapton® is severely degraded. An effective approach to prevent this erosion is chemically bonding polyhedral oligomeric silsesquioxane (…
A Calotropis procera tem sido uma alternativa alimentar para os ruminantes na região semi-árida brasileira, apresentando rápido estabelecimento e disponibilidade constante de fitomassa, até 3,0 t de MS/corte, no período seco. No aspecto bioquímico estudos detectaram diversas substâncias ativas como cardenolídeos ou gl…
This book is about research on natural fibre reinforced polymer composites. Many natural fibres such as oil palm, banana pseudo-stem, coir, coconut shell, sugar palm, kenaf, ramie, jute, sisal, abaca, pineapple leaf, cotton, rise husk and bagasse have been promoted as possible reinforcements in fibre reinforce composi…
The vegetation of Northeastern region is unique being characterized as one of the richest flora in the world, which produces a variety of products. Northeastern India has the highest number of endemic plants, animal and microbial species. Many sericigenous insects along with their food plants are endemic to this regio…
Microscopic methods usable for sample surface imaging and subsequent qualitative and quantitative evaluation of platelet adhesion to the surface of the biomaterial studied were compared. It was shown, making use of the samples of medical steel (AISI 316L), that such tools as surface imaging with scanning electron micr…
Purpose: The aim of this paper was investigated structure of sintered carbides WC-Co type and sialon tool ceramics with wear resistance ternary coatings TiBN type deposited by cathodes arc evaporation process (CAE-PVD). Design/methodology/approach: Observation of fracture and topography studied coatings were done by s…
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