Materials Literature
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Glass cell experiments were conducted to investigate kinetics of iron sulfide and mixed iron sulfide/carbonate layer formation in carbon dioxide/hydrogen sulfide (CO2/H2S) corrosion of mild steel using the weight change method. Scanning electron microscopy/energy-dispersive spectroscopy (SEM/EDS), x-ray diffraction me…
Relationships of electrostatic interaction and encapsulation between poly(amidoamine) (PAMAM) dendrimers and negatively charged drug molecules have been investigated by aqueous solubility and NMR ( (1)H NMR and two-dimensional nuclear Overhauser effect spectroscopy (2D-NOESY)) studies. PAMAM dendrimers significantly i…
Various PLA resins have been tried with chemical blowing agent and physical blowing agent in extrusion process to study the expansion dependency of amount of blowing agent and cell density, respectively. It has been found that a `dip' exists in both cases; foam density decreases to a minimum, then increases. It sugges…
The inhibition effect of 1,1′-thiocarbonyldiimidazole (TCDI) on the corrosion behaviors of mild steel (MS) in 0.5 mol·L−1 H2SO4 solution was studied with the help of potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and linear polarization resistance (LPR) techniques. The effect of immersion…
The adsorption and kinetics of conversion of cis -2-butene with deuterium on model supported Pd catalyst (Pd/Fe 3 O 4 /Pt(111)) were characterized by reflection−absorption infrared spectroscopy (RAIRS), temperature-programmed desorption (TPD), and isothermal molecular beam (MB) experiments. It was found that selectivi…
The kinetics of oxidation of ethanol−gasoline surrogate mixtures (85−15 vol %) was studied using a fused silica jet-stirred reactor. One representative of each class constituting E85 gasoline was selected. These constituents were iso-octane, toluene, 1-hexene, and ethanol. The experiments were performed in the tempera…
The dynamics of Keggin polyoxoanions in aqueous solution in the presence of monovalent cations is analyzed through molecular dynamics simulations. Together with structural information yielding the radial distribution functions of Li(+), Na(+), and K(+) with three polyoxometalates (POMs) bearing 3-, 4-, and 5- charges,…
This article discusses about the abnormal or faulty operating condition of premature power generator insulation failures that can be classified as: design failures, material failures, manufacturing failures and maintenance failures. The final failure of the mica insulation is usually caused by electric breakdown throu…
In prokaryotes, PurU (10-formyl tetrahydrofolate [THF] deformylase) metabolizes 10-formyl THF to formate and THF for purine and Gly biosyntheses. The Arabidopsis thaliana genome contains two putative purU genes, At4g17360 and At5g47435. Knocking out these genes simultaneously results in plants that are smaller and pal…
This article describes engineering design of waterproof breathability fabrics specifically designed for leisure, medial uses and survival clothing. In many applications, breathable fabrics not only satisfy water-vapor permeability but also a number of other functional characteristics. Garment design, cut and fit, desi…
The microstructure of bubbles in magma controls the dynamics of magma flow in a volcanic conduit. To investigate the shear‐induced evolution of bubble microstructures, we performed a series of deformation experiments on vesiculated rhyolitic melts by twisting columnar obsidians at a temperature of 975°C and at rotatio…
The synthesis and characterization of novel covalent organic-inorganic architectures containing organically functionalized supertetrahedra is described. The structures of these unique materials consist of one-dimensional zigzag chains or of honeycomb-type layers, in which gallium-sulfide supertetrahedral clusters and…
A new large radius imaging plate diffraction camera for high-resolution and high-throughput synchrotron x-ray powder diffraction by means of multiple exposures has been developed for an insertion device beamline of SPring-8, Japan. The new imaging plate camera consists of a large radius cylindrical shape imaging plate…
Superhydrophobic surfaces were fabricated by the complex coating of silica nanoparticles with functional groups onto cotton textiles to generate a dual-size surface roughness, followed by hydrophobization with stearic acid, 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane or their combination. The wettability and morpholo…
A strong greenish-light photoluminescence (PL) emission was measured at room temperature for disordered and ordered powders of CaMoO4 prepared by the polymeric precursor method. The structural evolution from disordered to ordered powders was accompanied by XRD, Raman spectroscopy, and TEM imagery. High-level quantum m…
Chemical exchange saturation transfer (CEST) imaging is an emerging MRI technique relying on the use of endogenous or exogenous molecules containing exchangeable proton pools. The heterogeneity of the water resonance frequency offset plays a key role in the occurrence of artifacts in CEST-MR images. To limit this draw…
Over the past few years there has been sustained interest in the synthesis, characterization and application of cadmium sulphide (CdS) nanostructures such as nanoparticles, nanowires, nanobelts, nanospheres. The history of CdS, more recent advances in the chemistry and synthesis of CdS nanostructures, and their applic…
In recent years, the development of new biomaterials with specifications for tissue and organ functional requirements-such as proper biological, structural, and biomechanical properties as well as designed control for biodegradation and therapeutic drug-release capacity-is the main aim of many academic and industrial…
Field survey of algae and cyanobacteria from terrestrial and freshwater habitats in the vicinity of arctic Ny-Alesund, Svalbard (790N) (high Arctic sea area) was performed in June 2006. Species diversity and abundance were evaluated by using epifluorescence microscopy and culturing methods. In total, 29 taxa in 25 gen…
Micrometer-sized nanostructured flowerlike MgO nanostructures were synthesized by an ethylene-glycol-mediated self-assembly process. The synthesized samples were studied systematically by X-ray powder diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, Fourier-transform IR, and…