Materials Literature
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The purpose of this study is to prepare and characterize injectable carboplatin-loaded poly(D,L,-lactic-co-glycolic) acid copolymer (PLGA) microspheres for the intracerebral treatment of malignant glioma. The microspheres were prepared by an acetone/mineral oil emulsion and solvent evaporation method. Preparation vari…
Nanocrystalline InP was prepared at temperatures of 80-160 °C through a novel route: 4InCl 3 +12KBH 4 +P 4 → en 4InP. Mean crystallite dimensions of 11.3-20 nm were determined from X-ray powder diffraction. Transmission electron microscopy images showed that the products were 15-20 nm spherical grains when prepared at…
We review the dynamics of supercooled liquids approaching the liquid-glass transition, starting with the conventional generalized hydrodynamics formulation. Empirical models for the memory function are discussed, as are empirical models for the self-energy function for phonons in crystals. Two examples of microscopic…
The experimental information on the solubility in the various Fe phases of TiC, TiN and solutions between them has been assessed using thermodynamic modelling. A set of values for the model parameters is proposed and it is capable of reproducing the experimental information with reasonable accuracy. It is noted that t…
The genus Dictyosporium is reviewed, based on examination of type specimens as well as new collections from various localities. Three new species, D. giganticum, D. nigroapice and D. tetraseriale, are described. Twenty two species are accepted in the genus, and their conidial \nmorphology is iilustrated. The chara…
A samaria‐doped ceria composite powder produced by spray pyrolysis (SP) was employed as the anode material for medium‐temperature solid oxide fuel cells (SOFC). cermet electrodes were prepared with the expectation that their mixed conducting nature would enhance the electrode reaction rate and improve the operation ef…
Des films composites degradables composes d'isolat de proteines de soja (SPI) et d'acides gras (FA) ont ete prepares. L'effet des acides laurique (LA), palmitique (PA), stearique (SA) et oleique, incorpores a plusieurs taux (0, 10, 20, 30 ou 40 % p:p de l'isolat de soja) sur la couleur, la resistance a la traction, l'…
Experimental studies on the irreversible growth of field-induced chains of dipolar particles suggest an asymptotic power-law behavior of several relevant quantities. We introduce a Monte Carlo model of chain growth that explicitly incorporates the anisotropic diffusion characteristic of a rodlike object. Assuming a si…
Samaria‐doped ceria (SDC) was prepared by using the solid‐state reaction method. Sintering of SDC was significantly promoted by adding a small amount of gallium. SDC that had 1% of gallium added, sintered at 1450°C, showed almost the same properties as SDC sintered at 1600°C. Measurements showed that the addition of g…
The trinuclear complexes [{Mo(O)(Tp*)Cl}(μ-1, n -C 6 H 4 O 2 ){Mo(O)(Tp*)}(μ-1, n -C 6 H 4 O 2 ){Mo(O)(Tp*)Cl}] ( 1, n = 4; 2, n = 3) have been prepared [Tp* = tris(3,5-dimethylpyrazolyl)hydroborate], in which a chain of three paramagnetic oxo-Mo(V) fragments are linked by two 1,4-[OC 6 H 4 O] 2 - (for 1 ) or 1,3-[OC…
Lee-Goldburg decoupling has been applied to enhance dipolar oscillations during the t1 period of the two-dimensional experiment used for obtaining order parameters of the liquid crystal N-(4-ethoxybenzylidene)-4-n-butylaniline (EBBA) at different temperatures. The order parameters of the aromatic core obtained by this…
It is known that the cubic (parent phase) to trigonal (R-phase) martensitic transformation is accompanied by some precursor phenomena in the parent state, such as appearance of weak diffuse scattering, although the mechanism is not clear. In the present work, the structural modulation in the parent phase was analyzed…
The 2-D bimetallic complex [NiL]3[Fe(CN)6]2·9H2O (L represents 3,10-dimethyl-1,3,5,8,10,12-hexaazacyclotetradecane) has been prepared and its structure and magnetic properties studied. The structure consists of cyano-bridged neutral Ni3Fe2 units. Each hexacyanoferrate(III) ion connects three nickel(II) ions using thre…
Superlattice reflections observed for the first time in the room temperature powder neutron diffraction patterns of SCT are shown to arise due to tilting of TiO 6 octahedra. Rietveld refinement of the neutron diffraction data confirms that the structure of SCT for is orthorhombic similar to that of CaTiO 3 . Implicati…
When successfudly applied, ceramic Cutting tools can increase the metal removal rate by several times over that obtained with conventional tool materials. Ceramic tools are either based on alumina or silicon nitride and applications in metal cutting are determined by the specific material properties of the tool materi…
Alumina specimens were prepared by compacting well‐characterized spray‐dried alumina granules of excellent deformability, followed by sintering. The strength and Weibull modulus were measured and microstructure was evaluated for specimens prepared from granules with different density and morphology. Compacts of sphero…
Two coarse-grained models for polymer chains in dense glass-forming polymer melts are studied by computer simulation: the bond fluctuation model on a simple cubic lattice is treated by Monte Carlo methods, and a continuum bead-spring model with a Lennard-Jones potential between the beads is treated by means of molecul…
Phosphorus-based flame retardants have diverse modes of action, Aryl phosphates can have vapor phase action in styrenic polymers but also can contribute to producing a barrier layer. Tris(dichloroisopropyl) phosphate in a flexible polyurethane foam can serve as both a vapor-phase (probably physical) flame inhibitor in…
Vascularization into a poly(vinyl alcohol) (PVA) sponge was investigated using basic fibroblast growth factor (bFGF). This growth factor was impregnated into biodegradable gelatin microspheres for its sustained release and then the bFGF-containing microspheres or free bFGF were incorporated into PVA sponges. Following…
The novel tetranuclear copper(II) complex [Cu4(hpda)4][ClO4]4·H2O (Hhpda = N-(2-hydroxyethyl)-1,3-propanediamine) with an open cubane-like Cu4O4 framework has been obtained and characterized by X-ray crystallography and magnetic measurements, exhibiting strongly ferromagnetic exchange interaction.