Materials Literature
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The effect of 0–2 wt-% Sn addition on AZ80 magnesium alloys after 350°C extrusion has been studied by analysing microstructure and mechanical properties. The results indicated that dynamically recrystallised grains were fine and homogeneous with less than 1 wt-% Sn addition. In AZ80–0.5Sn alloy, a large number of Mg 1…
Hydroxyacid dehydrogenases are responsible for the conversion of 2-keto acids to 2-hydroxyacids and have a wide range of biotechnological applications. In this study, a D-lactate dehydrogenase (D-LDH) from a Sporolactobacillus inulinus strain was experimentally verified to have both the D-LDH and glutamate dehydrogena…
Two polyoxometalates (POMs) with W were synthesized by a two-step, self-assembling method. They were used for stimulation of mesenchymal stem cell differentiation into insulin-producing cells. The nanocompounds (tris(vanadyl)-substituted tungsto-antimonate(III) anions [POM1] and tris-butyltin-21-tungsto-9-antimonate(I…
Some soft magnetic materials are strongly dependent on the temperature, because of their low Curie temperature. In order to predict their behavior in electrical devices, engineers need hysteresis models able to consider the temperature. This paper is an attempt to consider the temperature in an existing model of stati…
A novel synthesis strategy is presented for depositing metallic Ag at the anode during simultaneous electrochemical oxidation of Al. This unexpected result is achieved based on galvanic coupling. Metallic dendritic nanostructures well-anchored in a high surface area supporting matrix are envisioned to open up a new av…
Pure and blend films from chitosan (CH) and soy protein isolate (SPI) were produced in varying compositions (CH/SPI 75/25, 50/50, 25/75 w/w) based on the solvent type (acetic and formic acids). Glycerol was used as a plasticizer. The interactions between the two biopolymers was confirmed by FTIR and TGA, indicating mi…
Abstract In this Communication we present an investigation of the influence of light on the formation of platinum (Pt) nanoparticles (NPs) using standard polyol synthesis reagents at room temperature. It is demonstrated that instead of thermal treatment, UV light can be used for particle formation thus opening new pat…
The flame retardancy, mechanical properties of a pure polypropylene (PP)/(thermoplastic polyurethane) (TPU) blend, and PP/TPU blends containing nanoclay as flame retardants, were investigated by the limiting oxygen index (LOI) test, vertical burning test (UL‐94), rate of burning test (ASTM D 635), and their effect on…
Species from the genus Oricymba are studied from freshwater ecosystems of Vietnam and Laos. Three species were found in Vietnam, namely O. japonica, O. subovalis and O. perjaponica comb. nov. The two last species are new taxa for the diatom flora of Vietnam. A new species is described from Laos, O. voronkinae sp. nov.…
Highly conductive polypyrrole/graphene/manganese dioxide (PPy/graphene/MnO2) composites are fabricated via ultrasonic irradiation using p-toluenesulfonic acid as a dopant. The microstructures of PPy/graphene/MnO2 are evidenced by the SEM and TEM examinations. The effects of the graphene and MnO2 loading on the electri…
The present study investigated the toxicity of photoreactive nanoparticles (NPs) on the development of Oryzias latipes. Buoyant fish embryos are potentially vulnerable to sunlight-derived ultraviolet (UV) irradiation. Zinc oxide (ZnO) NPs in surface water easily absorb UV irradiation from transmitted solar light. In t…
We investigate how the microstructure of a colloidal polycrystal influences its linear visco-elasticity. We use thermosensitive copolymer micelles that arrange in water in a cubic crystalline lattice, yielding a colloidal polycrystal. The polycrystal is doped with a small amount of nanoparticles, of size comparable to…
This study was conducted to investigate the effects of nano‐size montmorillonite (MMT) in poly(vinyl alcohol)‐(dialdehyde starch) (PVOH‐DAS) blending system. DAS was initially synthesized through periodate oxidation method, followed by a solution casting procedure to prepare a PVOH‐DAS‐MMT blend hybrid. Increasing the…
An energy harvesting prototype (EHP) was designed to convert low-temperature heat loss from fluid into electricity. The method for energy conversion uses two antagonistically connected shape memory alloy (SMA) actuators to rotate a shaft that is connected to a generator. Heat transfer equations for concentric annular…
The effective thermal conductivity of nanocomposites constituted by nanoparticles and homogeneous host media is discussed from the point of view of extended irreversible thermodynamics. This formalism is particularly well adapted to the description of small length scales. As illustrations, dispersion of Si nanoparticl…
Application of ZnSe, ZnS, ZnSSe, CdS, ZnCdS and ZnO single crystal substrates for the preparation of nanoporous matrices by electrochemical etching using various electrolytes is analyzed. We demonstrate prospects of using ZnSe and ZnCdS compounds for the fabrication of nanopore arrays with pore diameter down to 30 nm,…
ABSTRACT To know the possibility of using Indian butter tree seed waste (mahua seed cake [MSC]) as a filler in the production of value‐added product such as polyurethane (PU) green composites, a series of PU composites have been fabricated with varying amounts, namely, 0, 2.5, 5.0, 7.5, and 10 wt%, of MSC, and their e…
We report a detailed investigation of the structural and chemical characteristics of thin evaporated Al2O3 tunnel barriers of variable thickness grown onto single-layer graphene sheets. Advanced electron microscopy and spectrum-imaging techniques were used to investigate the Co/Al2O3/graphene/SiO2 interfaces. Direct o…
Photochromic solid materials based on the cationic polymer poly(decylviologen) are reported. The solids were obtained by freeze-drying colloidal suspensions of nanocomplexes obtained by mixing aqueous solutions of the polycation with different solutions of polyanions such as poly(sodium 4-styrenesulfonate) or sodium a…
Paper 962707, 10 S.