Materials Literature
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The type III ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO) present in the archaeon Thermococcus kodakaraensis was found to participate in adenosine 5'-monophosphate (AMP) metabolism, a role that is distinct from that of classical RuBisCOs of the Calvin-Benson-Bassham cycle. Genes annotated as thymidine pho…
Angiogenesis is essential for the development of malignant tumors and provides important targets for tumor diagnosis and therapy. To noninvasively assess the angiogenic profile of tumors, novel alpha(v)beta(3) integrin-targeted ultrasmall superparamagnetic iron oxide particles (USPIOs) were designed and their specific…
Amorphous silica is increasingly used in diagnostic and biomedical research because of its ease of production and relatively low cost. It is generally regarded as safe and has been approved for use as a food or animal feed ingredient. Recent literature reveals that amorphous silica may present toxicity concerns at hig…
Highly recommended! - CHOICE New Edition Offers Improved Framework for Understanding Polymers Written by well-established professors in the field, Polymer Chemistry, Second Edition provides a well-rounded and articulate examination of polymer properties at the molecular level. It focuses on fundamental pri
Long viewed as a topic in classical physics, ferroelectricity can be described by a quantum mechanical ab initio theory. Thin-film nanoscale device structures integrated onto Si chips have made inroads into the semiconductor industry. Recent prototype applications include ultrafast switching, cheap room-temperature ma…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Proceedings of the 5th IASTED International Conference on Biomedical Engineering, BioMED 2007
The rheological properties of PC/EVA blends had been investigated by a Haake torque rheometer. The effects of blending temperature, a polycarbonate and a catalyst on the rheological properties of PC/EVA blends were discussed. The transesterification between PC and EVA, catalyzed by dibutyl tin oxide (DBTO), were inves…
Abstract Often it is assumed that absorbance decays in photochromic materials with the time dependence of the photochemical kinetics, i.e. exponentially for first order kinetics. Although this may hold in the limiting case of vanishing absorbance, deviations are to be expected for realistic samples, because the local…
In this investigation nanocomposites have been prepared from LLDPE, Nanomer(1.30P) with and without MAH-g-PE (Epolene C16) by melt intercalation method. Different Physico-Mechanical properties of the nanocomposites and virgin PE were assessed and compared. Nanocomposites microstructure were visualized by TEM analysis.…
The local atomic structure of GeSi self-assembled islands buried in a silicon matrix strongly influences the optical properties of such systems. In the present paper this structure was determined by x-ray absorption fine-structure (XAFS) spectroscopy and high resolution transmission electron microscopy (HRTEM) and use…
Al K edge X-ray absorption spectroscopy has been applied to investigate pure sodium alanate and sodium alanate doped with 5 mol % Ti on the basis of TiCl 3 by ball milling. These first experimental data indicate that the chemical state of Al in NaAlH 4 does not change upon cycling. It confirms also that the valence st…
We have developed an alternative method for building up a nanogranular system and have analysed its magnetic properties. Using a chemical route we have obtained magnetite nanoparticles with an average diameter of 4.5 nm and with a very narrow size distribution (σ≤20%). These particles have been studied dispersed in a…
Slow dynamics of the nanoscale surface morphology of structured substrates and its effect on particle adhesion are analysed based on fundamental principles. We find that the change in the surface roughness of molecular composites (substrates) is controlled by the composition of small molecules in miscible blends with…
Hartree−Fock and density functional theory techniques have been used to calculate the structures, the stabilities in aqueous and toluene solutions, and the 19 F and 29 Si NMR shifts of F - encapsulating double-ring geometry silsesquixoanes D n R with n = 3−6. We find for the fluorides that the encapsulation free energ…
Copolymerization and a self-assembly technique were used to build up a self-doped polyaniline (SPANI) ultrathin film on an indium tin oxide (ITO) substrate. The monomers used were aniline and its derivative OSAN ( o -aminobenzenesulfonic acid). Successful OSAN−AN copolymerization and film formation were simultaneously…
The exclusion of salts from the pores of activated carbon granules is demonstrated for the first time for the salts K 2 CO 3, K 2 HPO 4 and K 3 PO 4 . In soaking experiments, the concentrations of solutions of K 2 CO 3, K 2 HPO 4, and K 3 PO 4 inside the pores are less than in the bulk solutions. This phenomenon is ob…
The electron-transport properties of unlinked and linked solid-state films of very small “Au 38 ” nanoparticles (monolayer protected clusters, or MPCs) remarkably change in opposing directions upon contact with increasing pressures of CO 2 gas (0∼6.6 MPa). Electronic conductivities (σ EL ) of dropcast, unlinked Au MPC…
Positively charged superparamagnetic iron oxide (SPIO) particles of maghemite were prepared in aqueous solution and subsequently stabilized with poly(ethylene oxide)- block -poly(glutamic acid) (PEO–PGA) at a hydrodynamic diameter of 60 nm. Depending on the amount of PEO–PGA used, this is accompanied by a switching of…