Materials Literature
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A 48-year-old male patient was admitted to the emergency department with complaining of an acute onset of dyspnea. A chest X-ray demonstrated pulmonary edema while echocardiography revealed a giant mass originating from the mitral valve orifice, which was severely blocking the atrioventricular flow. The patient underw…
Pengelasan FCAW selama ini dianggap memiliki kekuatan dan efektifitas yang tinggi dalam penyambungan pelat. Hasil pengelasan jenis ini salah satunya dipengaruhi oleh kualitas fluks yang tergantung pada komposisinya. Perbedaan klasifikasi elektrode pada suatu produk akan menyebabkan variasi komposisi ini. Spesimen uji…
A hybrid parallelization method composed of a coarse-grained genetic algorithm (GA) and fine-grained objective function evaluations is implemented on a heterogeneous computational resource consisting of 16 IBM Blue Gene/P racks, a single x86 cluster node and a high-performance file system. The GA iterator is coupled w…
We study theoretically the level shift of massless Dirac fermions in a graphene monolayer subjected to a quantizing perpendicular magnetic field under the influence of short-range impurities. A Green function method is used to obtain closed expressions for the Landau level shift for any sharply peaked impurity potenti…
The effects of aliovalent rare earth substitution on the physical properties of Sr0.3Ca0.7Fe2As2 solid solutions are explored. Electrical transport, magnetic susceptibility and structural characterization data as a function of La substitution into (Sr_1-y_Ca_y)_1-x_La_x_Fe2As2 single crystals confirm the ability to su…
Minerals can become metamict over geological time periods as a result of structural damage induced by α-decay events resulting from incorporated radiogenic elements. The structural state and the thermally induced recrystallization behavior of metamict titanite were studied by Raman spectroscopy, synchrotron single-cry…
In this chapter, we present a review of our continuing efforts toward the development of discrete, low-dimensional nanostructured carbon-based electron emitters. Carbon nanotubes and nanofibers, herein referred to simply as CNTs, are one-dimensional carbon allotropes formed from cylindrically rolled and nested graphen…
Long fiber composite materials can be elaborated by Liquid Composite Molding (LCM), a family of processes where fibrous preforms are injected by a low viscosity resin. During this process, we have to pay particular attention to the void formation inside the preform because it could modify the material final characteri…
Lewis acid–base interactions at the oil–water interface can greatly decrease the liquid–liquid interfacial tension and induce an oleophilic-to-superoleophobic wetting transition on a nonresponsive microstructured surface. In their Communication on page 8348 ff., L. Jiang and co-workers report a strategy for tunable su…
The electromagnetic transmittance of a double layer of identical square arrays of square holes (mesh) in a perfectly conducting sheet is analytically modeled using a modal matching technique. The structure supports families of standing-wave modes together with surface modes that, close to the onset of diffraction, int…
Abstract Pr0.5Sr0.5MO3 (PSMO) films with tetragonal and orthorhombic structures were epitaxially grown on a [0 0 1]-oriented LaAlO3 substrate (LAO) and a BaTiO3 substrate (BTO), respectively. It was found that the M(T) curves of the tetragonal PSMO films exhibit one/two distinguished magnetic transition peaks dependin…
We examine the relevance of several major material-dependent parameters to the magnetic softness in iron-base superconductors by first-principles electronic structure analysis of their parent compounds. The results are explained in the spin-fermion model where localized spins and orbitally degenerate itinerant electro…
General aspects concerned with (001)-, (110)- and (111)-oriented superlattices (SLs) have been investigated. In particular, the symmetry of these systems have been derived and given in detail. As a test, the obtained data have been utilized to calculate electronic structures and gaps of a standard GaAs/AlAs system usi…
Taxonomic inconsistencies between two published collections on Devonian stromatoporoids were examined. The studied collections contain stromatoporoids sampled from the Middle and Upper Devonian from the Ardennes (collection by Lecompte) and the Holy Cross Mountains (collection by Kazmierczak). The study was limited to…
Diffraction techniques, such as X-ray diffraction (XRD), are traditionally used to examine the structures of extended solids.However, while diffraction is an invaluable analytical tool in solid state chemistry, it is limited by the fact that it can only probe the overall, average structure.Raman scattering spectroscop…
Aluminium alloys is desirable for the automotive and electronic appliances industries due to their high strength-to-weight ratio, corrosion resistance and weldability. However applications of the aluminium alloys were very difficult because aluminium alloys formability is very low at room temperature, despite their ad…
We show that the materials quasi-static forming limit curve (FLC) can be exceeded by the process chain composed of deep drawing followed by electromagnetic forming. We form circular cups as close as possible to the FLC by deep drawing. These cups are then further formed (calibrated) by electromagnetic forming. The ele…
Organic solar cell (OSC) materials have recently gained rich attention due to capable of efficient power conversion, cost-effective, mechanically flexible and light weight solar cells. At the same time further materials developments for high performance will be necessary for commercial production of organic photovolta…
The microstructure, optical property and magnetism of nitrogen ion-implanted SiO2 were studied. The nitrogen incorporation into SiO2 was confirmed by means of x-ray photoelectron spectra and a Fourier-transform infrared absorption spectrum. The bond angle of Si–O–Si is decreased by nitrogen implantation. The absorptio…
Thirty-six species of fresh water algae were taxonomically identified. The samples were collected from rain-fed streams (Algaadha) in Shamshoki, District Karak during March to May, 2011. Algae was collected, identified and described from this area for the first time. These specimens belongs to 36 species, 25 genera, 1…