Materials Literature
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MagSaki software was developed for the magnetic analysis of dinuclear high-spin cobalt(II) complexes. This software performs magnetic analysis to determine magnetic parameters using several types of theoretical calculations, such as the following: (1) a mononuclear complex in an isotropic octahedral field, (2) a monon…
A tetraazaporphyrin (TAP) prepared by condensation of 1-ferrocenyl-1,2,2-tricyanoethylene in the presence of magnesium shows an intense, broad near-IR band in the 700–1300 nm region, which may be ascribed to charge-transfer transitions from the ferrocenyl moiety (substituents) to the TAP ligand.
Various correlations between the size of the trivalent cation (Al, Ga, Fe, and Cr) and the structural characteristics and decomposition behavior of Co-based hydrotalcites (Co/M3+ = 3) have been identified. In situ IR spectra (by the relative ratio of the amount of carbonate in low and high symmetry) and thermogravimet…
The combination of H3 + n[PMo12 - nVnO 40].aq (HPA-n, n = 3) and dioxygen proides a clean and regioselective reagent for the homolytic cleavage of various representative alpha-hydroxy ketones (primaryto tertiary) and turns out to be as efficient for the catalytic ring opening of chiral natural products.
Highly dispersed 3–6 nm platinum nanoparticles have been deposited by low temperature chemical vapor deposition of [PtMe2(η4-C8H12)] in a fluidized bed reactor on carbon nanospheres of low surface area.
The photophysical properties and the monomer–dimer equilibrium of four thiamonomethinecyanine dyes (1–4) were studied by time-resolved and steady-state spectroscopic methods. In ethanol and aqueous solution at room temperature the behaviour is mainly due to a monomer and dimer, respectively. The dimerization constant…
In the present paper there are two parts contributing to the discussion of high rate directional solidification and its application. The first part aims to characterize the high rate directional solidification of various kinds of alloys. It was found that the relevant cooling rate of the high rate directional solidifi…
On the basis of the new concept of elemental strain, used to describe a possible aging process occurring in polymeric materials, the expression for the life model, already proposed in a previous paper, must be modified, taking into account the possibility that the local strain is an elemental property of the polymer m…
This article documents the formation of a block copolymer of poly(lactic-co-glycolic acid) and polylysine via a simple coupling technique using dicyclohexyl carbodiimide (DCC). The resulting polymer has been characterized via UV-Vis spectroscopy, GPC, (1)H NMR, and elemental analysis, is soluble in a wide variety of s…
SUMMARYGeneral aspects of electropolishing of stainless steel have been reviewed. Some suitable bath parameters have been enumerated. The possible mechanisms for electropolishing of stainless steel have been briefly outlined. Various factors that affect the polishing of stainless steel have been cited. The processes o…
BACKGROUND AND PURPOSE: Intraoperative MR imaging is increasingly being used to control the extent of surgical resection; however, surgical manipulation itself causes intracranial contrast enhancement, which is a source of error. Our purpose was to investigate the potential of monocrystalline iron oxide nanoparticles…
The new standard IEC 60270/FDIS[2000] for partial discharge(PD) measurement has been published in September 2000, which builds up an integral quality assurance system for PD measurement based on the IEC 60060-2[1994]. It takes traceability of quantity as its core in order to ensure accuracy of measuring results, compa…
The limitations of currently used heart valve devices are well known. For prosthetic valves they include infection risk and thrombembolic complications; biologic devices have limited durability. Particularly for pediatric cardiac patients the problem of a lack of growth potential remains a serious issue. The multidisc…
Novel hybrid organic–inorganic catalysts constituted by iron(III) or manganese(III) 5,10,15,20-tetrakis(pentafluorophenyl) porphyrin entrapped in an alumina amorphous matrix have been prepared. The hybrid materials were obtained by a non-hydrolytic sol–gel route, through the condensation of aluminium chloride with dii…
Oxidation of gold nanoparticles protected by thiolated β-cyclodextrin molecules, leads to formation of water-soluble polycyclodextrin nanocapsules held together by S–S bonds.
Acoustic techniques are accepted generally for diagnostics of gas-insulated systems (GIS). This paper addresses the problem of risk assessment of moving particles. The main part of the paper gives a general understanding of internal particle movement and excitation of external acoustic signals, leading to signature an…
We studied the physicochemical, piezoelectric and dielectric properties of collagen–chitosan films, with regard to the development of new biomaterials which have potential applications in the coating of cardiovascular prostheses, support for cellular growth and in systems for controlled drug delivery. The piezoelectri…
The high proton conductivities of doped barium and strontium cerates has led to their consideration as electrolytes in fuel cells operating at intermediate temperatures (600-800°C). The electrochemical properties of Pr-doped barium gadolinium cerate [ Ba ( Ce 0.8 − y Pr y Gd 0.2 ) O 2.9 ] have been investigated as par…
Abstract—We have constructed mimetic finite difference methods for both the TE and TM modes for 2-D Maxwell’s curl equations and equations of magnetic diffusion with discontinuous coefficients on nonorthogonal, nonsmooth grids. The discrete operators were derived using the discrete vector and tensor analysis to satisf…
All articles of this category Catalytic enantioselective Baeyer-Villiger oxidations of 3-substituted cyclobutanones with cumene hydroperoxide as oxidant have successfully been performed in the presence of chiral magnesium catalysts. The combination of enantiopure BINOL and a variety of Mg reagents is able to promote t…