Materials Literature
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We investigated the electronic states and structural properties of Li x Mn[Fe(CN) 6 ] 0.83 ·3.5H 2 O, and Li x Mn[Fe(CN) 6 ] 0.87 ·2.6H 2 O, which have different amount of [Fe(CN) 6 ] vacancies. X-ray absorption spectra near the Fe and Mn K-edges revealed that the Li intercalation/deintercalation process is two-electr…
Recently, magnetism of Mn complexes has attracted much attention in relation to the metalloenzymes, in which Mn ions play important roles in the catalytic abilities. The magnetism of them are determined by structures of the Mn complexes part of the enzymes. In particular, the ferromagnetic and antiferromagnetic intera…
Origin of the right coronary artery from the pulmonary artery (ARCAPA) is a rare lesion occasionally found at angiography or autopsy. We describe a case of anomalous origin of right coronary artery from pulmonary artery with ostial stenosis initially diagnosed as coronary arteriovenous fistula from pulmonary artery. T…
Polyaniline (PANI) has been synthesised using a combined ultrasonic interfacial polymerisation method. Both the morphological structure and chemical compositions were analysed using field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and Fourier transmission infrared radiation (FTIR). Results…
Computer simulation has been employed in this paper to study the different inhibition phenomenon of two organic acids on Cu (0 0 1) surface. The computed results are in good agreement with the experimental values, which indicates that the results obtained by us are acceptable. The chemical interaction between mental s…
Five characteristic temperatures of T M = 148 K, T N = 142 K, T t = 138 K, T f ~ 125 K and T g ~ 50 K were found by the measurements of the magnetization curves at various temperature. The spontaneous magnetization appears below T M . It increases up to M s ≃ 2 × 10 −4 μ B at T t and then decreases steeply below T t ,…
Some pulp mills expect to produce viscose fiber by means of pre-existing pulp production lines as used for conventional kraft pulp having a relatively high content of hemicellulose. In the present study oxygen-reinforced alkali extraction was used to dissolve the oxidized lignin, which increased the content of alpha c…
A magnetic and pH targeting drug delivery system based on the magnetic nanocomposite doping mesoporous silica material has been successfully prepared. The material exhibited highly ordered mesostructure, large Brunauer–Emmett–Teller surface area, high pore volume, regular nanoparticle morphology and superior magnetic…
In the first-principle study on the magnetic interactions in transition metal dimer complexes, we have shown that the effective Hamiltonian method can be effectively utilized ( J. Phys.: Condens. Matter 23 375502). To extend our method to clusters with higher nuclearity, some approximations are needed since the number…
We report the stabilization of ferrofluid in oleic acid synthesized by ultrasonication of nanosized Fe3O4 particle and grafts of poly-dimethylsiloxane (PDMS) with acrylic acid and methacrylic acid. The nanosized polymers were prepared by microwave-assisted copolymerizaion of PDMS chain with 0.029 mol of acrylic acid a…
During their lifetime, glass panels are repetitively exposed to thermal stresses. These thermal stresses result from temperature differences within the panel, which most notably cause the edges of the panels to be stressed in tension. When these thermal stresses exceed the glass edge strength, failure will occur. In t…
We have investigated the electronic structure of Cu ions in ferromagnetic compound CaCu 3 Sn 4 O 12 by using X-ray absorption and magnetic circular dichroism (MCD) measurements around the Cu L 3,2 - and O K -edges. In both edges, the signal of MCD were clearly observed. By using sum rules, we could obtained M spin = 0…
MgH2, rather than Mg, was employed as a starting material in this work. A sample with a composition of 82 wt% MgH2-18 wt% Ni (designated MgH2-18Ni) was prepared by reactive mechanical grinding. Its hydriding and dehydriding properties were then examined. An MgH2-Ni hydrogen-storage alloy that does not require an activ…
The oxycarbonate Sr7Co4(CO3)O11.36 exhibits a peculiar structure that has been characterized by combining transmission electron microscopy analyses and neutron diffraction. It consists of a regular intergrowth between the m = 2 and carbonated m = 3 members of the Sr(m+1)Co(m)O3(m+1) Ruddlesden-Popper (RP) series, Sr3C…
Seeking revolutionary improvement in the performance and weight of composite structures, Cessna Aircraft Company, with sponsorship from the NASA Fundamental Aeronautics Program/Subsonic Fixed Wing Project, is developing a protective skin concept which would allow the primary composite structure to only carry load and…
The interfacial properties of structurally defective single-walled carbon nanotube (CNT) embedded polymeric nanocomposites are quantitatively characterized through molecular dynamic simulations. Three different kinds of point defects including single vacancy, single adatom, and Stone-Wales are generated to pristine CN…
Hysteresis is the dependence of a physical property, not only on the present controlled parameters, but also on the path travelled. Although Shape Memory Alloys (SMAs) exhibit a myriad of nonlinearities, SMAs show two major types of nonlinear hysteresis. During cyclic loading of the SMAs, it is observed that one type…
Development of a multiscale computational model for analyzing plasticity in polycrystal materials is reported in this article. The model is based on crystal plasticity theory along with the Generalized Method of Cells (GMC) micromechanics theory for homogenization. A preprocessor tool is developed to create polycrysta…
Finite element simulations representing thermal barrier coatings on turbine blades enabled mapping of the stress evolution within the multi-layer configuration under thermalmechanical conditions. The study aims to accurately model the transient strain behavior throughout a load cycle due to plasticity, creep, and oxid…
Se estudio la composicion, estructura y dinamica de la comunidad fitoplanctonica en relacion a parametros bioticos y abioticos en cinco lagunas de la turbera de Rancho Hambre, situada dentro de la Reserva Natural y Paisajistica del Valle de Tierra Mayor, (Tierra del Fuego). El analisis de las caracteristicas fisico-qu…