Materials Literature
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We report on the use of Preyssler’s anion and heteropolyacids catalysts for obtaining substituted flavones and chromones for the cyclization of 1-(2-hydroxyphenyl)-3-aryl-1,3-propanediones. The reactions were performed using chloroform as solvent at reflux temperature conditions and in the absence of solvent, at 110 o…
The paper presents experimental results obtained by investigation of copper alloy artifacts from the secondand third centuries AD, with multi-analytical non-destructive methods such as optical microscopy (OM), X-ray fluorescence (XRF) and X-ray diffraction (XRD). Studies have sought to determine the characteristics of…
The main aim of this study was to investigate the relationship between molecular weight and the antistaphylococcal activity of oligomers/polymers synthesized from 3-aminopyridine. Different oligomers/polymers were synthesized from 3-aminopyridine by changing the oxidative polycondensation reaction conditions. They wer…
The Advanced Finite Element Analysis (AFEA) methodology has been developed by the US NRC and the nuclear industry to evaluate the natural crack growth of primary water stress corrosion cracking (PWSCC) in nickel-based alloy materials. The AFEA methodology allows the progression of a planar crack subjected to typical S…
High-resolution scanning electron microscopy (HR-SEM) with backscattered electrons (BSE) under a low accelerating voltage provided images with compositional information about Pt nano-particles with a diameter of approximately 6 nm that were dispersed in mesoporous silica (SBA-15). The dispersion of Pt nano-particles i…
In the present study, a comparative photodynamic therapy (PDT) study was performed using the phthalocyanine derivatives, ZnPc(OCH(3))(4) and ZnPc(CF(3))(4), in a mouse tumor model, under identical experimental procedures. We studied the ablation of tumors induced by PDT. The end-point was to compare the photodynamic e…
2-alkyl-N-benzylidenehydrazinecarbothioamide of fatty acid hydrazides from nontraditional oils (neem, rice bran and karanja) have been synthesized and evaluated as corrosion inhibitors for mild steel (MS) in hydrochloric acid (HCl) solution by weight loss method. Adsorption of all Schiff bases on MS surface in acid so…
A liquid-core fiber has been experimentally investigated by inserting PbSe/toluene solution media in the hollow-core of a capillary waveguide. Upon pumping by a 532nm-CW laser, a good amplified stimulated emission in 1290nm band was obtained.
Coloration of mefenamic acid (MFA) was investigated in the presence of mesoporous silica FSM-16 with 16.0 A (Oc) and 45.0 A (Doc) pore diameter. The color change of MFA/FSM-16 physical mixture from white to deep blue was observed by sealed-heating (SH) and the subsequent humidification (HU). The coloration and the col…
Overpack, a container of high-level radioactive waste for Japan's geological disposal program, is required to prevent the sealed vitrified waste from coming into contact with groundwater for 1,000 years. This means that the same duration and function arerequired for the weld joint between the body and lid of the overp…
P-polarization high reflectors are deposited by e-beam from hafnia and silica. 1-on-1 and N-on-1 tests at 1064-nm wavelength with P-polarization at 45 incidence are carried out on these samples. Microscope and scanning electron microscope are applied to investigate the damage morphologies in both 1-on-1 and N-on-1 tes…
Carbon nanotube (CNT) arrays have been synthesized by a repeated growth method using a custom‐fabricated plasma‐enhanced thermal chemical vapor deposition (PE‐thermal CVD) apparatus. The initial catalyst is a layered structure prepared by depositing 10 nm of Al followed by 3 nm of Fe on an oxidized silicon substrate.…
In this contribution we report the re-determination of the crystal structure of a previously reported anionic oxo-vanadium arsenate framework [(As(6)V(IV)(12)V(V)(3)O(51))(-9)](infinity) (1) with piperazinium counterions; we also present supporting spectroscopic and elemental data.
N-Acetyltransferase 2 (NAT2) is one of the most important polymorphic drug-metabolizing enzymes and plays a significant role in individual differences of drug efficacies and/or side effects. Coenzyme A (CoA) is a cofactor in the experimentally determined crystal structure of NAT2, although the acetyl source of acetyla…
In this study, we simulate the motion and reformation of polymer chain in the nanoscale fluid flow motion of the DPD (Dissipative Particle Dynamics) solvent. The behavior of polymer chain through DPD solvent is studied for 2D and 3D considerations. We implement two body forces of Poiseuille flow and electroosmotic flo…
One way to increase the value of renewable energy is to use a high efficiency reversible solid oxide fuel cell (SOFC) as an energy storage device. The utilization of SOFC for distributed generation (DG) requires the development of inverters that convert variable DC power into AC power. This paper addresses the integra…
Silver‐doped As33S>67 and As33S33Se33 bulk glasses studied by means of Scanning Electron Microscopy (SEM) and infrared reflectivity, exhibit two‐phase glasses, for a wide range of Ag concentration. Using the Effective Medium Approximation we show that the structure is actually a proper average of two components, a Ag‐…
We report the first diode pumped laser operation of thulium-doped lutetia in the 2 µm wavelength range. Output powers of more than 40 W and slope efficiencies of up to 42 % with respect to the incident pump power were achieved at room temperature.
The synthesis of a novel class of hexa-arm molecules with C(3d) symmetry via a simultaneous six-fold nucleophilic substitution reaction from 1,4,5,8,9,12-hexabromododecahydrotriphenylene has been described.
The purpose of the study was to demonstrate the J-coupling connectivity network between the amide, aliphatic, and aromatic proton resonances of metabolites in human brain using two-dimensional (2D) localized correlated spectroscopy (L-COSY). Two different global water suppression techniques were combined with L-COSY,…