Materials Literature
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Abstract The rheological properties of conventional polyethylene terephthalate (PET) resins are not particularly suitable for low density extrusion foaming with physical blowing agents; as a result, chemically modified resins through chain extension/branching reactions are often used. Such resins have overall higher m…
Abstract Grease‐resistant paper has been produced by coating paper with isolated soy protein (ISP). Tensile strength (TS) of ISP‐coated paper is 28–30 MPa (between the TS of paper and of ISP film). TS of the ISP‐coated paper (2.3 kg/ream) was highest (36.0 MPa) among other ISP‐coated papers, but elongation (E) of the…
Thin film material of oriented multiwall carbon nanotubes was obtained by noncatalytical chemical vapor deposition in a glow-discharge plasma. The film phase composition, surface morphology, and structural features were studied by Raman and electron microscopy techniques. Low-voltage electron field emission of thin fi…
The lamellar organization of melt-crystallized β-isotactic polypropylene was studied by atomic force microscopy (AFM) after permanganic etching. Hedritic objects grown at a high crystallization temperature (140–143 °C) were investigated. Essential features of the hedritic development were revealed by the characteristi…
Abstract Acid variable charge subsoils exhibit a positive charge, which retards the passage of anions through the soil profile. The objective was to study the NO − 3 adsorption isotherms and the effect of changing the subsoil positive charge on NO − 3 and Cl − retention, estimate NO − 3 and Cl − retardation in differe…
Type II and III fibrillar collagens were localized by immunogold electron microscopy in resin sections of human femoral articular cartilage taken from the upper radial zone in specimens from patients with osteoarthritis. Tissue samples stabilized by high-pressure cryofixation were processed by freeze-substitution, eit…
Summary Soils derived from loess are extensive in Europe and are well suited for forestry. They are suspected to be poor acid buffers, however. We have estimated the weathering stage and acid neutralizing capacity of acid soils under forest in a toposequence on loess in the Belgian silt belt. The soils vary distinctly…
Rutherford backscattering spectroscopy was used to investigate the persistence of cation-diffusion- limited oxidation in three, low-Fe 2+ -bearing MgO-Al 2 O 3 -SiO 2 glasses (base glass compositions along the enstatite-cordierite-liquid cotectic; total Fe levels of 0.04, 0.19, and 0.54 at%). The glasses were reacted…
A mechanistic model for silicon (Si) physiology is developed, interfaced with a model of nitrogen (N) physiology, which is capable of simulating the major documented facets of Si–N physiology in diatoms. The model contains a cell cycle component that is involved in regulating the timing of the synthesis of valves, gir…
We recently identified the phaG(Pp) gene encoding (R)-3-hydroxydecanoyl-ACP:CoA transacylase in Pseudomonas putida, which directly links the fatty acid de novo biosynthesis and polyhydroxyalkanoate (PHA) biosynthesis. An open reading frame (ORF) of which the deduced amino acid sequence shared about 57% identity with P…
The effects of simulated marine environments on the performance of wood/thermoplastic composites under quasi-static and fatigue loading is investigated. The material under consideration consists of wood flour embedded in a thermoplastic matrix. The effects of additives and processing methods were included in the durab…
The transition from sputtered Al to electroplated Cu interconnects for future microelectronic devices has led to an interest in understanding the relationships between the microstructure and texture of Cu that might impact electrical performance, similar to what has been done for Al. Electroplated Cu undergoes a recry…
We report a quantitative analysis of the change in optical appearance of a supported film of liquid crystal that is induced by specific binding of an immunoglobulin (IgG) to a surface-bound antigen. We interpret the optical appearance to indicate the amount of bound IgG and thus the concentration of IgG in solution. T…
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Two series of dendrimers containing a single ferrocene unit located in the focal point of these macromolecules have been synthesized and characterized. The first series of dendrimers has considerable lipophilic character, with tert-butyl ester groups located in their peripheral regions. In contrast, the second series…
Using molecular dynamics computer simulation we calculate for a simple glass former e IS , the energy of the inherent structure, in equilibrium and in the out-of-equilibrium situation. We show that e IS can be used to define for the aging system an effective time-dependent temperature T e ( t ). In particular we demon…
Knitted fabric in this study is one of the textile fabrics that has been mainly used as reinforcements for applications of large scale composite structures in the United States. The structure of the knitted fabric is that unidirectional fiber bundles are orientated in multi-direction and linked with knitted yam. There…
Effects of Sb doping, sintering temperature and precoating with oxides on the optical and electrical properties of Sb-Sn-O thin films ~100 nm thick deposited by electron beam from bulk samples prepared using a sintering technique are investigated and discussed. All films have partially amorphous structure. The quality…
Cubylamines and cubylmethylamines are of interest as antiviral agents. Reliable syntheses of some polyamides with cubane as the backbone of a polymer chain are described. Two monomers of cubane, cubane-1,4-dicarboxylic acid (CDA) and 1,4-diaminocubane (DAC), are used. Polymerizations of DAC, 1,6-hexamethylene diamine…
The ionic conductivity in the system (1 − 0.08 x − 0.12 y )ZrO 2 –0.08 x Y 2 O 3 –0.12 y CaO (where x + y = 1 and y = 0–1) has been investigated using the complex impedance technique at 523–973 K. Doping CaO in the ZrO 2 –Y 2 O 3 system may result in an increase in the activation energy for lattice conduction and depr…