Materials Literature
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The oxygen diffusivity of hexagonal barium titanate by the tracer method and its dielectric constants have been evaluated. The oxygen diffusivity of hexagonal barium titanate does not show any direction dependency along [0001] and [1000] directions in lattice. Because of the face-shared position is more favorable posi…
In the present study, degradation properties of the polymer blends of Poly(lactic acid) (PLA) and Poly(butylene succinate) (PBSU) with different mixed fractions were investigated. PLA/PBSU(50/50) exhibited the highest water absorption during hydrolysis tests because water absorption was accelerated due to the existenc…
In this study, surface characteristics and cell proliferation of mechanical sandblasted Ti-30Ta-xNb surface have been investigated. Samples with three different surface preparations were used: 0.3um polished, 50um and 100um HA sandblasted. Cell culture on the specimen surface was performed with mouse osteoblast-like c…
Since the adoption of ISO/IEC 17025, testing laboratories have been required to perform Measurement Uncertainty analysis for the tests within their scope. Four points of recurring debate are discussed: (1) The variability in fire test results due to unforeseen/uncontrolled variables is generally far greater than the m…
Morphological structure and growth process of LbL nanostructured films from nickel tetrasulfonated phthalocyanine (NiTsPc) alternated with polyallylamine hydrochloride (PAH) were investigated. The experimental results of UV-visible adsorption kinetics (modeled by Johnson-Mehl-Avrami functions) and AFM images analyzes…
In this study, the effect of PS on the mechanical, thermal and morphological properties of SEBS and SIS type elastomers -based shoe sole material was investigated in flow direction 0o and flow direction 90o. The structure and properties of the composites are characterized using a scanning electron microscopy (SEM), Di…
The transmission of electrons with incident energies 300–1000 eV through single glass capillary samples of macroscopic dimensions has been investigated. The transmitted spectra for all energies indicate dominance of inelastic electrons as the tilt angle ψ increases, with the ratio of inelastically to elastically trans…
Patterned cathodes with composition (La 0.87 Ca 0.13 ) 0.95 MnO 3 (LCM) were fabricated by rf-magnetron sputter deposition on 8 mol% yttria-doped zirconia (YSZ) substrates to have a constant LCM/YSZ contact area of 0.8 cm 2 , but have triple phase boundary (TPB) lengths ranging from 450-1600 cm cm -2 .Electrochemical…
The problem of high-frequency conductivity of a thin cylindrical metal film is solved using the kinetic method. The kinetic boundary conditions taking into account the dependence of the reflectivity coefficient on the angle of incidence θ between the electron velocity vector and a normal to the metal surface are used.…
We study the high‐field transport behavior of a graphene nanoribbon in the degenerate and nondegenerate regimes by incorporating a previous low field mobility calculation modified for a high electric field in both regimes. The drift velocity model presented predicts that the transport behaviour is different in each re…
ICDP (Indefinite Child Double Pour) irons designated for working layer of centrifugal rolls of rolling mill must have precisely defined properties. The monitored parameters of the ICDP irons are: chemical composition, the amount of graphite in a microstructure and hardness of base metal material. Precipitation of grap…
peer reviewed
Angular momentum pumps are very often applied onboard ships. These pumps are used in cooling circuits of medium and high power engines, power plant boilers and in bilge, ballast and fire installations. Very extensive use of angular momentum pumps on board is connected with their numerous advantages. During operation t…
There has been a tremendous amount of interest in developing new MR contrast agents for cellular and molecular imaging applications such as the visualization of tumors, highlighting areas of angiogenesis, highlighting of contrast agent-labeled therapeutic stem cells, and highlighting of contrast agent-labeled drug del…
Lethal dose of some medicinal herbs used across the globe, for various purposes, have been reported by various workers. In this study, the acute toxicity effect and the LD of aqueous leaf extract of Leptadenia hastata treated white albino rats were investigated. Thirty (30) rats of both sexes weighing 285-308g body we…
低融点，低熱膨張性，高耐水性に優れた封着加工用鉛フリーガラスは，封着材としてセラミックスやエレクトロニクス産業の分野で望まれている．本研究では，V2O5–Li2O–TeO2系の三成分の金属酸化物を選択し，さまざまな組成で調製し，封着加工用鉛フリーガラスとしての要求を満たすガラスの評価を行った．具体的な評価としては，熱量分析におけるガラス転移点，ガラス軟化点，結晶析出点，熱機械分析における熱膨張特性，粉末X線におけるガラス構造確認を行い，三成分系のガラス化範囲の同定を行った．その結果，(10–40 mol%)V2O5–(0–40 mol%)Li2O–(30–70 mol%)TeO2の範囲において封着加工用ガラスとして低温軟化性で非晶…
On the path to sustainable electric power generation the efficiency of fossil-fuel power plants needs to be increased and CO2-emissions have to be reduced respectively. The main goal of the project is therefore to find the most efficient low-carbon power plant configuration, by means of the integration of high tempera…
The triangular Au nanoparticle array of size 37 nm was fabricated on a quartz substrate using nanosphere lithography. By performing the Z-scan method with femtosecond laser (800 nm, 50 fs), the optical nonlinearity of the Au nanoparticle array was determined. The results showed an intensity-related two-photon absorpti…
In this paper we report on a new kind of tri-color luminescence glass which can be excited efficiently by long-wavelength ultraviolet. These samples are prepared by melting silicon-borate raw material co-doped with Ce3+/Mn2+, Ce3+/Tb3+ and Eu2+, respectively. Among these doped ions, Mn2+, Tb3+ and Eu2+ are activators…
Abstract: In this study, natural and biodegradable chitosan/agar blend gel-beads were prepared via the interphase method. Agar was added to chitosan dissolved in aqueous acetic acid and stirred homogenously under a controlled temperature. With a syringe, the gel solution were added and dropped wisely to the oily phase…