Materials Literature
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To evaluate the permeability for columnar dendritic structures, three dimensional (3D) flow simulations of interdendritic liquid were carried out. The 3D columnar dendrites were made by means of the computer aided design (CAD), which were based on two-dimensional dendrite morphologies calculated by a phase-field metho…
In the paper hexagonal auxetics are analyzed. The necessary and sufficient conditions are obtained for the detection of hexagonal auxetics and auxetics on average over all transverse directions. Also, necessary and sufficient conditions are obtained for the triclinic crystals with average Poisson's ratio when averaged…
Hemidesmus indicus is widely used in Ayurveda for treatment of various disease conditions. It is used as a tonic, demulcent, diaphoretic, diuretic and blood purifier. The therapeutic action of the herb is due to presence of major chemical constituents like coumarinolignoids hemidesmine and hemidesmin. This herb is ben…
Mn doped tin dioxide nanoparticles (with 2, 4, 6% at. Mn) for possible diluted magnetic semiconductors (DMS) applications were successfully obtained through a facile ethylene glycol assisted sol-gel process. All samples were characterized through XRD and TG/DSC analysis, UV-VIS and FTIR spectroscopy. TG/DSC analysis r…
Distribution of surface charge can not be directly measured with current techniques but only be determined by complicate inverse calculations based on the results from indirect measurements.Therefore,we studied methods for the inverse calculation,and presented an improved method on the basis of the method proposed by…
Potential induced degradation (PID) is one of the failure modes in today’s photovoltaic (PV)-systems with strong impact on PV-module performance. Potential-induced shunting (PIS) is one of the most severe types of PID leading to shunting of p-type silicon solar cells. Previously, the kinetics of PIS was investigated i…
The crystal structure of SrCo 0.7 Fe 0.2 Nb 0.1 O 2.72 was determined using a combination of precession electron diffraction (PED), high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) and spatially resolved electron energy loss spectroscopy (STEM-EELS). The structure has a tetragonal P…
Background: The prompt restoration of blood flow (reperfusion) to the ischemic myocardium after an acute myocardial infarction is critical to the survival of non damaged heart tissue. However, reperfusion is responsible for additional myocardial damage. Our objective was to investigate the role of autologous platelet…
Magnetization, electrical resistivity and X-ray diffraction measurements were carried out for Mn1.8Co0.2Sb with a tetragonal structure in 4.2 ≤ T ≤ 280 K and in field B up to 16 T. For B = 0 T, anisotropic structural deformation occurred at Tt ∼ 140 K for zero-field cooling (ZFC), accompanied by a first-order magnetic…
In the design of a Japanese sodium-cooled fast reactor (JSFR), a design measure (fuel subassembly with an inner duct structure; FAIDUS) is considered to prevent severe recriticality events even in the case of core disruptive accidents by molten fuel ejection out of the core region through the duct equipped within the…
Description of known experimental data on the creep rupture strength of tensile rectangular and circular cross-sections rods at high temperature in air media is considered. Simulation of the creep rupture strength of tensile specimens is based on the Yu. N. Rabotnov's kinetic theory with two structural parameters — da…
A 5% aqueous solution of polyvinyl alcohol (PVA) (m.wt. 125, 000), nitrocellulose and PVA/nitrocellulose blend were applied as a topcoat on dyed goatskin leather. The FT-IR spectroscopy of the cast polymer films indicated that each of the films in dry state consist of only pure polymer. The microscopic and physical ch…
Tokyo Institute of Technology and Chubu Electric Power Company have been developing a room-temperature magnetic refrigerator. In order to improve the performance of the magnetic refrigerator, mainly the following components have been modified; (1) magnets, (2) AMR (active magnetic regenerator) ducts, (3) a pump, (4) p…
PEG 2000 : 1, 2-diacyl-SN-glycero-3-phosphoethanolamine-N-[methoxy(poly(ethylene glycol))-2000]; Rho-PE: N-(lissamine rhodamine B
In this paper, we present an ultra-broadband polarization-independent terahertz (THz) metamaterial absorber (MA) made of circular truncated cone metamaterial. Absorptivity higher than 92.3% at normal incidence is obtained in a wide range of frequencies from 2 to 10 THz. We employ an isotropic metamaterial cell which c…
PolyHIPE materials have been prepared by Ring Opening Metathesis Polymerisation (ROMP) of dicyclopentadiene. Two characteristic features for successful stabilization of high internal phase emulsions (HIPEs) were tuned in order to achieve improvements regarding mechanical properties of polyHIPEs. Mechanical properties…
Trivalent Eu and Dy ions co-doped amorphous strontium aluminate oxide (SrAl2O4:Eu3+Dy3+) were synthesized through solution combustion route. The phase of the synthesized compound was examined with the X-ray diffractometry. The photoluminescence spectra of the amorphous SrAl2O4:Eu3+Dy3+ has shown that the sharp blue em…
Shelf life of fresh fruits and vegetable depends on two variables namely respiration rate of commodity and permeability of t he packaging films. The modified atmosphere packaging using specially designed films acts as protective surface by controlling respiration of go ods and permeation simultaneously. Although there…
The fatigue durability of smooth and fancy flame cotton yarns was analysed with a Wohler’s curve. It was found out that the characteristic of fatigue durability of the curve mentioned determined for cotton fancy flame yarns enables the determination of the complete diagram of these curves. In turn, for smooth yarns a…
Terahertz (THz) electromagnetic waves share a few of the characteristics of optical and gigahertz waves, which makes them suitable for a number of interesting and new applications in imaging, spectroscopy, characterization, sensing and monitoring. Recently, there has been a huge interest in developing THz devices that…