Materials Literature
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Abstract Polyacrylamide gels are widely used as matrices for biomolecular analysis and fractionation, and they are being developed as biomaterials for diverse medical and industrial applications. This study reports silver nitrate as a novel catalyst for the synthesis of polyacrylamide gels from acrylamide and N,N‐meth…
A protocol is described whereby time-to-corrosion, Ti, of reinforcing steel in concrete exposed to chlorides was calculated as a distributed, rather than discrete, parameter. The method consists of inputting (1) an average value for surface [Cl−] and the effective diffusion coefficient, (2) the mean and standard devia…
para-Phenylene-bridged spirobi(triarylamine) dimer 2, in which π conjugation through four redox-active triarylamine subunits is partially segregated by the unique perpendicular conformation, was prepared and characterized by structural, electrochemical, and spectroscopic methods. Quantum chemical calculations (DFT and…
The thermal and radiolytical stabilities of three isomers of N,N′-diethyl-N,N′-ditolyl-dipicolinamide (EtTDPA) were investigated. Radiolysis was performed at doses up to 125 kGy and thermogravimetric analysis was performed at temperatures of up to 450°C. Infrared data showed increasing amounts of aromatic nitration by…
Efficiency in the numerical calculation of absorption corrections for cylinders has been examined. Two mathematical expressions for the correction factors have been evaluated by two methods for numerical integration. It has been found that the Gauss–Legendre quadrature applied to the formula proposed by Thorkildsen &…
Testing of a TRUEX flowsheet has been performed using a thirty-stage, 5-cm centrifugal contactor pilot plant. This testing was performed using a non-radioactive feed surrogate and data were collected and analyzed to evaluate removal efficiencies of the lanthanides, mass transfer efficiency of the lanthanides in the ex…
In the development of advanced nuclear fuel cycles, a primary motivation is the reduction of the long-term radiotoxicity of the wastes. From a few decades to several thousand years after removal of the fuel from the reactor, americium (Am) dominates the radiotoxicity of used fuel, thus its transmutation represents an…
A photobattery based on a cationic cyanine dendrimer is demonstrated. The battery can be recharged simply by exposure to light. The mechanism for charge storage and discharge is proposed.
Hydrogen $({\text{H}}_{2})$, deuterium $({\text{D}}_{2})$, and the $0.25{\text{D}}_{2}\text{\ensuremath{-}}0.5\text{DT-}0.25{\text{T}}_{2}$ isotopic mixture of deuterium and tritium (D-T) each form a metastable solid state below their respective triple-point temperatures $({T}_{TP})$. The metastable solid is observed…
The detailed and careful IAEA Safety Series Report No. 63: Release of Patients after Radionuclide Therapy appeared on my desk at about the same time USA Today came out with its 18 March 2010 story ‘Thyroid Cancer Radiation a Public Threat’. How interesting the coincidence and how timely the release of the SSR No. 63 a…
We investigate characteristics and generation process of surface waves excited on a structured perfect conductor surface in order to clarify the mechanism of resonant transmission in metal hole arrays made of the perfect conductor. By using a metal hole array of kagome lattice, we can separate two modes excited on the…
Based on the concepts of a superpropagator, multiple Debye temperatures, and equivalence of the binding energy of a Cooper pair and the BCS energy gap, the set of generalized BCS equations obtained recently via a temperature-generalized Bethe–Salpeter equation is employed for a unified study of the following composite…
A dopant cluster consisting of two antimony atoms facing each other in a six-member ring was found in the silicon crystals of a dopant concentration of 5 × 10 20 cm -3 , slightly above the critical value for generating electrically deactivated clusters. This cluster was detected with a 50-pm-resolution aberration corr…
A diblock copolymer, poly(methyl methacrylate)-b-polystyrene (PMMA-b-PS), was grafted onto the surface of nano-titania (nano-TiO2) successfully via reversible addition-fragmentation chain transfer (RAFT) polymerization. The surface of TiO2 nanoparticles was modified initially by attaching dithioester groups to the sur…
Abstract We propose to use ion‐beam patterning of plasmonic nanoparticles made by standard electron beam lithography, plasmonic metal deposition, and lift‐off sequence. With this approach new three‐dimensional (3D) tailoring of nanoparticles becomes possible: cut through the particle and into the substrate, cut‐throug…
We have numerically calculated the autocorrelation function $C(r)$ of the spin misalignment by means of micromagnetic theory. $C(r)$ depends sensitively on the details of the underlying magnetic microstructure and can be determined by Fourier inversion of magnetic small-angle neutron scattering data. The model system…
This article presents a shape sensitivity analysis method for calculating gradients of crack growth rate and crack growth direction for 2D structural components under mixed-mode loading using extended finite element method (XFEM) and level set method (LSM). XFEM is a computational technique in which special enrichment…
Abstract Electrochemical cyclic voltammetry (C‐V) method was reported to prepare highly hydrophobic polythiophene (PTh) films with high adhesion force. Using this technique, the morphology and surface roughness of PTh film can be controlled by adjusting cycle number, monomer concentration, and applied voltage. After f…
Dynamical scaling properties in fractal structures were investigated from small-angle X-ray scattering (SAXS) data of the kinetics of aggregation in silica-based gelling systems. For lack of a maximum in the SAXS intensity curves, a characteristic correlation distance ξ was evaluated by fitting a particle scattering f…
We have investigated micellization in systems containing two surfactant molecules with the same structure using a lattice Monte Carlo simulation method. For the binary systems containing two surfactants, we have varied the head-head interactions or tail-tail repulsions in order to mimic the nonideal behavior of mixed…