Materials Literature
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Chemical investigation of the extract of Dendronephthya hemprichi, collected from the Red Sea, Egypt, delivered dendrophen (1), the first 3β -acetoxy-glycyrrhetyl amino acid conjugate obtained from nature. Additionally, a new polyhydroxy sterol, dendrotriol (2), together with cholesterol and hexitol were isolated. Chr…
1,3-Diacylglycerols (1,3-DAG) are components in many natural, commercial, and food systems. These compounds are always asymmetric, and diacid forms are chiral. To understand what effect this has on their crystallization behavior, model enantiopure (1-decanoyl-3-palmitoyl- sn -glycerol) and racemic (1,3-decanoyl-palmit…
A core-shell model that accounts for surface effects is suggested to investigate the postbuckling behavior of nanowires. The corresponding critical load, buckling wavenumber and amplitude incorporated in the surface effects are analytically derived. The results demonstrate that the surface effects have a strong influe…
Cyclic multilayer alloy (CMA) deposits of Zn-Ni were developed on mild steel from sulphate bath having thiamine hydrochloride (THC) and citric acid (CA) as additives. CMA coatings were developed galvanostatically using triangular current pulses, under different conditions of cyclic cathode current density (CCCD’s) and…
A solution of sodium polytungstate (SPT) is used as a heavy liquid in global soil studies. This reagent has found wide use because it is nontoxic, incombustible, well soluble, environmentally safe, and of low viscosity. There is a relatively simple and accessible method for its regeneration. The reagent contains no ca…
The time-resolved magnetization dynamics of epitaxial Fe3O4 thin films grown on GaN(100) was studied using a field pumped time-resolved magneto-optical Kerr (TRMOKE) setup. The dynamic responses of the magnetization in the 3 and 6 nm Fe3O4/GaN films under a 1 kOe magnetic field pulse were measured and compared to a ma…
Abstract The electrochemical oxidation of anodic metal (cobalt, nickel, copper, zinc and cadmium) in an acetonitrile solution of the Schiff‐base ligand 2‐(tosylamino)‐N‐[2‐(tosylamino)benzylidene]aniline (H2L) afforded the homoleptic compounds [ML]. The addition of 1,1‐diphenylphosphanylmethane (dppm), 2,2′‐bipyridine…
Buffer-overflow attacks began two decades ago and persist today. Over that time, a number of researchers have proposed many solutions. Their targets were either to prevent or to protect against buffer-overflow attacks. As defenses improved, attacks adapted and became more complicated. Given the maturity of field and t…
To advance the understanding of delignification with polyoxometalates (POMs) that have been explored for use in bleaching of chemical pulps, the transformation of lignin during anaerobic treatment of birch kraft pulp with an equilibrated POM mixture composed of Na5(+2)[SiV1(-0.1)MoW10(+0.1)O40] was investigated. The c…
ANUKORN PHURUANGRAT a* Sonochemical process is very attractive for preparing nanostructured materials. The process can lead to more uniform particle-size distributions, smaller sizes, slightly higher surface area, and better thermal stability. The phase purity was achieved more easily than by the conventional one. Whe…
The interaction between ozone and silver nanoparticles stabilized with sodium polyphosphate is studied in aqueous solutions. The process of ozone decomposition is established to have a chain character. The oxidation of one silver atom initiates the decomposition of about three ozone molecules. The stability of colloid…
The thermolysis of Zr(BH4)4 vapor at 573 and 623 K in a vacuum of 1.33 × 10−1 Pa was studied. Nanosized zirconium diboride was produced as an X-ray amorphous powder and a crystalline film. According to electron microscopy data, the X-ray amorphous zirconium diboride powder obtained at 573 or 623 K consists of spherica…
A blue phosphorescent p–i–n homojunction organic light-emitting device with a low driving voltage was demonstrated using 4,6-bis[3-(carbazol-9-yl)phenyl] pyrimidine (46DCzPPm) as the bipolar host material and iridium(III) bis[4,6-(difluorophenyl)pyridinato-N,C2'] picolinate as the blue triplet emitter. The device inco…
In this paper, nearly monodisperse Fe3O4 hollow and solid submicron spheres were synthesized using a simple solvothermal method. The TEM investigation clearly reveals the successful realization of the hollow structure of magnetite spherical particles by the method. The average diameter of the Fe3O4 hollow and solid su…
The retarding field analyzer (RFA) is a widely used diagnostic tool for the ion temperature measurement in the scrape-off-layer (SOL) of the thermonuclear plasma devices. However, the temporal resolution in the standard RFA application is restricted to the ms timescale. In this paper, a dc operation of the RFA is cons…
A problem of paramount importance that has attracted the attention of environmental biologists is the discharge of highly colored effluents into the environment by various industries, which use a wide range of synthetic dyes. The existing chemical methods for dye degradation are not only expensive but also contributes…
We propose a generalized regression neural network (GRNN) approach based on grey relational analysis (GRA) and principal component analysis (PCA) (GP-GRNN) to improve the accuracy of density functional theory (DFT) calculation for homolysis bond dissociation energies (BDE) of Y-NO bond. As a demonstration, this combin…
In this study, a diffusion-based kinetic model essential for design and operational analysis of spent nuclear fuel reduction has been developed. The model considers the cathode side of the system to be rate limiting and deals with diffusion of lithium metal through the basket loaded with uranium oxide (UO2 or U3O8). F…
Observation techniques for measuring the small vibration of a single microcapsule of tens of nanometers in an acoustic standing wave field are discussed. First, simultaneous optical observation of a microbubble vibration by two methods is investigated, using a high-speed video camera, which permits two-dimensional obs…
Wear behaviours of nitrided, anodised and duplex treated commercially pure (CP)-Ti were investigated using a pin on disc tribotester. First, CP-Ti was nitrided and then anodised at different temperatures and times. Phase structure, cross-section and surface hardness of coatings were examined with XRD, SEM and microhar…