Materials Literature
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Transparent films of poly (vinyl alcohol)/hydroxypropyl cellulose (PVA/ HPC) blend with different concentrations were prepared by using solutioncast technique. Variations in the group coordination in the IR region were followed. The effects of HPC concentrations on the optical characterizations of the films have been…
The paper intends to contribute to the stages of bioremediation technologies elaboration, by means of experiments and efficiency demonstrations of adequate biological depollution and ecological reconstruction methods.During the 2009-2011 period, heavy metals and metalloids, etc phytoextraction tests were performed wit…
Automotive parts made of steel sheets normally have sheared edges, which have been reported to decrease hydrogen embrittlement (HE) resistance of ultra-high strength steel (UHSS) sheets. However the mechanism on the detrimental effect of the sheared edge on HE resistance has not been clearly understood yet. In this st…
In the present paper a finite element model is introduced to simulate corrosion-induced damage in concrete.The model takes into account the penetration of corrosion products into the concrete as well as non-uniform formation of corrosion products around the reinforcement.To account for the non-uniform formation of cor…
This paper uses the cutting forces in a turning process of EN 8 steel to estimate the tool wear effect. Tool wear effect is obtained by monitoring the variation in the cutting forces. The aim of this study is to development an online monitoring system. By identifying one or more criteria to efficiently quantify and id…
In this work, pyrolysis oil was prepared from pine wood and gasified in an oxygen blown pressurized entrained flow gasifier (PEBG) at 0.25 MWth, oxygen equivalence ratio around 0.5 with an oxygen concentration of 7080% of the inlet gas (i.e. 2030% nitrogen) and at a pressure of 1.95 bar (g). A pyrolysis oil pump ski…
Nanocrystalline CdFe2O4 of were synthesized by sol-gel citrate method. Structural properties, antimicrobial activity were investigated. An assay shows the broad spectrum antimicrobial activity of nanoparticles against Gram negative pathogenic strain. The existence of CdFe2O4 structure of ferrite was confirmed by X-Ray…
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The adsorption and inhibition efficiency effect of enaminonitrile derivatives on the Cu10Ni alloy in 0.5 M HCl were investigated using electrochemical techniques (potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM)). The inhibition efficiency of the…
Quantum dots (QDs) of direct band gap semiconductor cadmium sulfide (CdS) were synthesized using aqueous CdCl2 and Na2S by microemulsion method at 303 K. The cationic surfactant cetylpyridinium chloride (CPC) and cosurfactant 1-pentanol were used in water in heptane emulsion to form reverse micelles. The broad X-ray d…
It has become difficult to differentiate industrial products as a point of view of the quality due to development of high production technology in each country and company. Development of products satisfying Kansei, requirement and preference of customers, has been becoming important and indispensable. This paper desc…
The application of the microencapsulation technique in medicine and pharmacy has been extensively studied in recent years. The microencapsulation of small particles in polymeric, waxy or other kind of protective shells has become a well-established technology for coating and isolating various substances. The present p…
Microbial resistance represents a challenge for the scientific community to develop new bioactive compounds. In the present study antibacterial effect of TiO2 nanoparticles (<25nm) on Escherichia coli strain was investigated. The MIC50 value for the TiO2nanoprticles was found to be 200 μg/ml for E. coli, which was con…
Institute of Textile Engineering and Polymer Materials, University of Bielsko-Biala, ul. Willowa 2, 43-309 Bielsko-Biala, Poland, E-mail: rdrobina@ath.bielsko.pl Abstract The possibility of the introduction of probabilistic models based on Weibull’s theory applied to modelling the problems of fatigue durability and re…
Braid topology is the pattern of the interlacement of yarns in braided structures. . The proposed methods are to generate braid patterns with the removal of any bobbins from the braiding machine.
This work presents a methodology for accurate assessment of the effects of manufacturing defects on the interlaminar tensile (ILT) strength and fatigue performance of composites used in rotorcraft fatigue-critical structural designs. A primary failure mechanism for such structures is delamination. Although the ILT str…
Nitrogen gas is used in a wide variety of industrial processes. Many facilities generate nitrogen on-site using a nitrogen generation system supplied by costly compressed air. The waste gas, which is oxygen rich, is typically exhausted to the atmosphere. If combustion takes place with an oxygen rich gas, a smaller amo…
ACTA CHIMICA SINICA CdSeTe NSs/TiO 2 NTs CO 2
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MoS2纳米花以MoO3和Na2S为前驱体，在230℃下采用水热法反应6 h合成。MoO3为反应提供钼源，Na2S为反应提供硫源，同时还作为反应中的还原剂。产物通过XRD和SEM、Raman光谱表征其特性。MoS2纳米花是由几十到上百个花瓣组织构成的，平均花径约为200~300 nm，边缘厚度约为5~10 nm的薄片花瓣从一个中心向各个方向放射性生长。对比反应温度和盐酸的浓度的对合成MoS2纳米花的影响，结果表明其最佳实验条件为：反应温度为230℃，盐酸浓度为0.4 mol/L，反应时间为6 h。实验结果表明，采用此方法合成MoS2纳米花晶相纯，没有杂质且反应时间短，实验条件要求低。同时还探究了实验可能的反应原理。Flower-l…