Materials Literature
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Eight pairs of carbon and stainless steel, long and short radius welding elbows were tested under conditions of steady internal pressure and in-plane, resonant dynamic moments that simulated seismic excitations. The elbows had an outside diameter of 60.3 mm and thicknesses of 3.91 and 5.54 mm. The material properties…
The magnetic properties of soft magnetic materials are based on dynamic behavior of magnetic domain walls. Many domain structure studies have contributed to the progress of magnetic materials. In this paper, the present state of new development in advanced grain-oriented silicon steel is introduced through the aid of…
An analytic solution for the normalized intensity for powder x-ray diffraction has been obtained for a simple two-dimensional lattice using a linear approximation for the interference function. The analytic solution, where the Bragg peaks are strongly asymmetric, is compared to computer simulations using the Debye for…
External corrosion and cracking are major threats for buried pipelines in sparsely settled, geologically benign areas. External corrosion is the main deterioration mechanism that can reduce the structural integrity of buried gas transmission pipelines on the Nova Gas Transmission pipeline system. To protect against ex…
Relief of strain is the driving force for the [2 + 2] cycloaddition and subsequent [2 + 2] cycloreversion of 1 with both open-chain and cyclic alkenes. The metathesis can even be performed with benzene as the olefin component [Eq. (a)]. The product can be roughly described as a ribbon- or beltlike conjugated system.
In this paper, a model is proposed for numerical simulation of transient state in three phase transformers. The model derived from circuit theory is based on association of linear and nonlinear reluctances. A large number of existing models are dealt with and discussed in detail. New approaches for leakage and core fl…
We have studied transport properties, including the thermopower and its field dependence, between 5 K and room temperature in films of ${\mathrm{La}}_{0.67}$${\mathrm{Ca}}_{0.33}$Mn${\mathrm{O}}_{3}$ fabricated by simple metalorganic decomposition technique. A large negative magnetothermopower, $\frac{[S(H)\ensuremath…
This paper describes the formulation and implementation of a generalized dynamic magnetic core circuit model suitable for both low- and high-frequency applications. The behavior of magnetic cores with any arbitrary flux waveforms is modeled by a simple ladder network consisting of nonlinear inductors and resistors. Th…
The interaction of murein hydrolases and synthases was studied by affinity chromatography. The lytic transglycosylases Slt70 and MltB of E. coli were purified and covalently linked to CNBr-activated Sepharose. Membrane extracts were analyzed for proteins that interact with the immobilized murein hydrolases. Slt70-Seph…
A numerical model for the prediction of microstructure and microsegregation in multicomponent alloys during dendritic solidification using a finite difference scheme is presented. The main kinetic and thermodynamic effects that can influence microsegregation (solid state back diffusion, secondary dendrite arm coarseni…
Abstract The phase changes that took place upon heating an Fe-rich illite (OECD #5) to 1300°C in an oxidizing atmosphere were studied by a variety of mineralogical techniques. Infrared spectra, showing the stepwise dehydroxylation of the illite, showed good agreement with variations in sample colour and Mössbauer spec…
This paper describes the theoretical calculation of the equivalent core loss resistance for a dynamic magnetic core loss model. The equivalent core loss resistance incorporates the effects of both the classical eddy current and anomalous losses. Derivation of a generalized nonlinear core loss resistance expression is…
A rapid whole-pattern profile-matching procedure for the quantitative assessment of multiphase powder diffraction patterns is described. Using a position-sensitive detector, with fixed beam-sample-detector geometry, we report on the efficacy and speed of this method in the quantitative assessment of four different mul…
Light steel-frame building systems are becoming more prevalent in commercial, industrial and residential construction in New Zealand. Tested fire resistance ratings are generally available for non-load-bearing systems, but not for load-bearing applications. This study investigates the performance of load-bearing light…
Nanocomposites (Si 3 N 4 /SiC) were studied by combined high‐resolution transmission electron microscopy and electron energy‐loss spectroscopic imaging (ESI) techniques. In ESI micrographs three types of crystalline grains were distinguished: Si 3 N 4 matrix grains (0.5 μΩ), nanosized SiC particles (<100 nm) embedd…
The third‐order nonlinear optical properties of donor‐acceptor substituted tetraethynylethenes (see figure and also the preceding contribution) are presented with special emphasis on the structure‐property relationships and the effect of conjugation paths on the optical nonlinearity. In one single class of materials t…
We have measured the subpicosecond optical response of a solid-state, semiconductor-to-metal phase transition excited by femtosecond laser pulses. We have determined the dynamic response of the complex refractive index of polycrystalline VO2 thin-films by making pump-probe optical transmission and reflection measureme…
Various blends of a commercial bismaleimide (BMI) mixture, a cyanate ester (CE) and a co-monomer with allyl and cyanate pendant groups were formulated and cured. Differential scanning calorimetry (DSC) data were used to monitor the cure of neat resins, while dynamic mechanical thermal analysis (DMTA) was used to asses…
The thermal conductivity of chemically, structurally, and isotopically highly pure germanium single crystals is investigated experimentally in the temperature range from 2 to 300 K. It is found that the thermal conductivity of germanium enriched to 99.99% 70 Ge is 8 times higher at the maximum than the thermal conduct…
This article describes properties of composites of collagen-hyaluronic acid shaped to layered materials. According to the results, interactions of these two polymers are very strong. The properties can be influenced by chemical crosslinking using glyoxal and starch dialdehyde. The different behavior during enzymatic d…