Materials Literature
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We devise a constraint algorithm that makes the angular velocity of the director of a liquid crystal a constant of motion. When the angular velocity is set equal to zero, a director based coordinate system becomes an inertial frame. This is a great advantage because most thermodynamic properties and time correlation f…
The first steps of silver clusters nucleation have been studied by pulse radiolysis in the presence of EDTA and CN - ligands. The successive rate constants and the transient absorption spectra corresponding to Ag 1 0 and Ag 2 + have been determined. It has been found that Ag 1 0 and Ag 2 + were complexed by the ligand…
Abstract Bengal Rose was succesfully encapsulated and liberated from a dendritic box. Bengal Rose@DAB‐ dendr ‐(NH‐ t ‐BOC‐L‐Phe) 64 was investigated with several different techniques such as ultraviolet, circular dichroism and fluorescence spectroscopy.
D. R. Boyd and N. D. Sharma, Chem. Soc. Rev., 1996, 25, 289 DOI: 10.1039/CS9962500289
A reaction generator in SOPHIA ( for reaction by ) generates all possible product structures by reconnections of free bonds obtained by cutting all bonds of a reaction site which is automatically perceived in the input reactantt structure and additions of atoms and/or atomic groups (AAG) to the free bonds. The reactio…
In a calcareous sinter precipitated from cold saline spring water at Shiowakka, Hokkaido, Japan, ikaite (CaCO3·6H2O) was found in winter, subsequent to the finding of monohydrocalcite with calcite in the previous summer. The formation of the ikaite was favored by low temperature, while that of the monohydrocalcite was…
Gold oxide films were prepared by reactive sputtering of pure gold in an oxygen plasma. These films were characterized by chemical and physical means to better understand the behavior of this metastable compound. Gold oxide, Au2O3, decomposes into the elements at 350 °C. It does not react with dry carbon dioxide but d…
Abstract Nichtrostende Stähle können in halogenidhaltigen Medien Schädigungen durch Lochkorrosion erleiden, die ihren Einsatz in der Praxis zu einem Risiko machen. Zum Verständnis der Prozesse, die zur Lochkorrosion, zur Lochbildung und zum Lochwachstum führen, wurden in den letzten Jahren umfangreiche Untersuchungen…
The reaction of methane (2%) with oxygen (2.8–4.6%) in nitrogen at atmospheric pressure over Pd/Al2O3, Pd–Pt/Al2O3 and Pd/Al2O3–CeO2 at temperatures in the range 250–600 °C has been studied using catalytic microcalorimeters (beads) with simultaneous analysis of gas mixtures by FTIR. With close-to-stoichiometric gas mi…
Laboratory corrosion tests have always been an important tool for Zr alloy development and optimization. However, it must be known whether a test is representative for the application in-reactor. To shed more light on this question, coupons of several Zr alloys were exposed under isothermal conditions in all or most o…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXT(4-Amino-2,6-dichlorophenyl)- bis(2,4,6-trichlorophenyl)methyl Radical: A New Constituent of Organic Magnetic MaterialsL. Teruel, Ll. Viadel, J. Carilla, Ll. Fajarí, E. Brillas, J. Sañé, J. Rius, and L. JuliáView Author Information Departament de Materials Orgànics Halogenats,…
Effect of aging at 873 K on the two-step B2→B19→B19′ transformation of a shape memory Ti–40.5Ni–10Cu alloy was studied. It was found that the start temperature of the B2→B19 transformation and that of the B19→B19′ transformation increase with increasing aging time. The start temperatures of the reverse transformations…
The promotive and suppressive effects of coexistence of bacterial strains on the growth of a diatom Chaetoceros gracilis were investigated under laboratory conditions. Tested bacterial strains were isolated from the diatom mass culture tanks at a kuruma prawn farm. To evaluate the effect of each bacterial strain, the…
Compounds of NiII, CuII, PbII, AgI, TlI, SnIV and SbV with the oxime C6H5C(O)C(NOH)CN (HL) were obtained from water, alcohol or acetonitrile solutions. The copper(II) complexes have been prepared in high yields using metallic copper powder. The compounds were characterized by IR, UV/VIS spectroscopy, magnetochemistry…
Abstract Multiblock‐(AB) n ‐copolymers, consisting of hard segments of poly(butylene terephthalate) (PBT) and soft segments of dimerized fatty acid were synthesized and analysed with DSC and DMTA. The polymers were characterized by their limiting viscosity number and melt flow index. The glass transition temperature (…
The substituted metal alkoxides (EtO) 3 Ti(lysinate) or (BuO) 3 Ti(lysinate) are obtained when 1 equiv of lysine is added to Ti(OEt) 4 or Zr(OBu) 4 . While the α-amino carboxylate moiety chelates the titanium or zirconium atom, the terminal amino group is capable of coordinating a metal ion. According to spectroscopic…
Small solid particles when present in thin liquid films are often able to change the stability of the films and hence, for example, influence the stability of foams and emulsions in which they are present. To be effective, a particle must be capable of entering a liquid surface. After entry the behaviour of the partic…
The specific volume change of Bisphenol A polycarbonate was measured at room temperature for several years. The effects of formation conditions like cooling rate and pressure, the addition of low molecular additives, and injection molding and quenching were investigated. The volume shrinkage at long times was found to…
The following five antimony(V) tetraphenylporphyrins with sigma-bonded antimony-carbon bonds were synthesized: [(TPP)Sb(CH(3))(2)](+)PF(6)(-), [(TPP)Sb(OCH(3))(OH)](+)PF(6)(-), [(TPP)Sb(CH(3))(OH)](+)ClO(4)(-), [(TPP)Sb(CH(3))(OCH(3))](+)ClO(4)(-), and [(TPP)Sb(CH(3))(F)](+)PF(6)(-). Each compound is stable toward air…
Mechanical activation of solids leads to an increased internal energy caused by the introduction of defects. This can result for example in a reduced surface melting temperature of activated particles, which in turn may affect their sintering behavior. Analogously the spreading behavior of MoO 3 over Al 2 O 3 may depe…