Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Hardly any fatigue breaks of reinforcing bars in bridges have been reported so far.Presumably, this is due to the fact that fatigue breaks are not actively searched on the one hand and damages are attributed to other phenomena (e.g.corrosion) on the other.The magnetic flux leakage (MFL) method as a non-destructive tes…
Ni-doped Pd exhibits a paramagnetic to ferromagnetic quantum phase transition at x c ≈ 2.5%. We report the magnetic field dependence of the magnetization of Pd 1− x Ni x for x = 2.59% at various temperatures. The nonlinear magnetization is well described by a conventional mean-field behavior at high temperatures and h…
The performance was compared on Syngas Completely Methanation at atmospheric pressure on fluidized and fixed bed reactors. From space-time yield of CH4, coke content and hot spots of bed temperature, fluidized bed technology was demonstrated to be more applicable to Syngas Completely Methanation. Characterization resu…
Przedstawiono wyniki badań, które są następstwem wstępnych analiz i - w efekcie końcowym - mają służyć do optymalizacji procesu hartowania (doboru odpowiednich parametrów nagrzewania i chłodzenia w piecu hartowniczym - krzywa opisująca szybkość chłodzenia) w taki sposób, aby otrzymać strukturę martenzytyczną na odpowi…
Se presentan los resultados preliminares y exploratorios de los silicofitolitos recuperados en los paleosuelos que contienen a las denominadas "escorias y/o tierras cocidas" en la sección superior de la Formación Chapadmalal, correspondiente a la base del Plioceno tardío (3,3 Ma), expuesta en las inmediaciones de la c…
With nearly 1,350 complete genome sequences available our understanding of biology at the molecular level has never been more complete. A consequence of these sequencing projects was the discovery of large functionally unannotated segments of each genome. The genes (and proteins they encode) found in these unannotated…
The formation mechanism of the oxide film on Fe-Cr-Al alloy, the effects of sulfur on the adhesion of the oxide film, and the role of RE element Y on the improvement of the oxide film adhesion were systematically studied on an electronic level, so that the physical nature of oxidation of the alloy was revealed. The re…
En el presente trabajo de investigacion se han obtenido satisfactoriamente, muestras policristalinas de ceria dopada con 10, 15 y 20% at. de samario sintetizadas por el metodo sol-gel. Cada una de las muestras, previamente calcinadas, fueron compactadas y posteriormente sinterizadas a diferentes temperaturas con el fi…
A number of theoretical problems are discovered in the application of degenerated models in punching process of ballistic shields. Insufficient knowledge of dynamic behavi ours of these models based on non-linear complex constitutive materials or combination of mixed rheological Maxwell models with linear elastic elem…
Nanocrystal, 6.8 sized, of LaPO4:Eu3+ has been successfully synthesized via a simple solution phase method. The influence of temperature preparation on the photoluminescent properties of LaPO4:Eu3+ (700, 900, 1000 and 1100° C) was investigated under UV radiation. It was observed from the photoluminescence spectra for…
Solid solutions of Bi1-x Re x FeO3 (Re=La, Nd; x=0-0.2) compounds were synthesized, and their room-temperature magnetoelectric and magnetodielectric properties were studied. Amplification of magnetoelectric and magnetodielectric effects with increasing the rare-earth doping level was detected in the concentration rang…
Ni/MgO catalysts were prepared using nitrate salt and citric acid in various ratios by the sol-gel selfpropagating, low temperature combustion process. The products were characterized by the scanning electron microscopy, X-ray diffraction, thermogravimetric analysis and differential scanning calorimetry. The results s…
The action of bacterial collagenase as an auxiliary agent in the tanning bath was studied. The use of bacterial collagenase enzyme has resulted in increased tannin absorption and better diffusion of tannins into the leather. Kinetics of tanning involving pretreatment with bacterial collagenase at different concentrati…
Las especies de fitoplancton constituyen una importante base de la trama trófica para diversos sistemas tales como: pelágicos, costeros y lacustres. Debido a su capacidad fotosintética, esta comunidad es sensible a los cambios en la disponibilidad de luz, la temperatura, la concentración de nutrientes, el consumo por…
Buccoadhesive compacts(BC?s) of Salbutamol sulphate in different concentrations (4mg and 8mg) were prepared by direct compression method using polymers like carbopols and hydroxyl propyl methyl cellulose 4KM(HPMC 4KM) in the ratios of 1:0, 1:1, 1:2 and 0:1. Also two different carbopols i.e. carbopol 934P (CP-934P) and…
The push to drive superconductor strand technology to reach higher critical current density (Jc) values and reduce production costs has led to innovative approaches in manufacturing technology. The Restacked Rod Process (RRP®) by Oxford Instruments is one such process which involves Nb bar extrusions in a Cu sheath. C…
Manganese ions are often encountered as impurities in the electrolyte used in the electrowinning of copper. The effects of manganese ions in the electrolyte on the anodic behaviour of lead-calcium-tin anodes used in the electrowinning of copper have not previously been definitively established. Potentiostatic oxidatio…
Electron Spin Resonance (ESR) experiments in the filled Cei 1- x Yb x Fe 4 P 12 ( x ≲ 0.0023) skutterudite compounds of T h cubic symmetry ( Im 3 ) reveal the coexistence of two distinct Yb 3+ sites with large difference in their site occupation, hyperfine interaction and temperature dependence of the ESR parameters.…
Magnetic structures and properties of the quasi-ternary layered intermetallic La 1- x Dy x Mn 2 Si 2 (0 ≤ x ≤ 1) compounds were investigated using magnetic measurements on single crystals and neutron powder diffraction. It was shown that various magnetic structures and magnetic phase transitions, which are observed in…
Sandy soils occupy a large proportion of the Cambodian landscape, and improved understanding of these soils is critically important to support agricultural development. This study aims to identify variability in soil particle size distributions and acidity among sandy soils from different parts of southern and eastern…