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Estimation of residual strength of a crack-containing welded pressure vessel exposed to a subzero operating temperature
(Pergamon-Elsevier Science Ltd, Oxford, 2019)
This paper presents a method for estimating the residual-strength of welded pressure vessel made of HSLA steel which contains a surface axial crack. In order to analyze the behavior of the structure, a set of specimens ...
Oxygen reduction reaction on silver electrodes under strong alkaline conditions
(Pergamon-Elsevier Science Ltd, Oxford, 2019)
Oxygen reduction reaction (ORR) was studied on a silver polycrystalline electrode in different NaOH concentrations with a help of rotating disc and rotating ring disc electrodes. Soluble reaction intermediate was detected ...
Impact of plasma treatment on acoustic properties of natural cellulose materials
(Springer, Dordrecht, 2019)
Low-temperature plasma is widely used in many surface treatment technologies for modifications of the physical properties of different polymeric materials. In the present work, we have examined the modification of acoustical ...
The initial characteristics of the polypyrrole based aqueous rechargeable batteries with supercapattery characteristics
(Elsevier Science Bv, Amsterdam, 2019)
The electrochemically synthesized polypyrrole (PPy) is investigated as a possible active material of the low-cost aqueous based secondary power sources in combination with zinc, lead oxide, and lead sulfate. The discharge ...
Use of spent brewer's yeast in L-(+) lactic acid fermentation
(Inst Brewing, London, 2019)
The application of by-products from the brewing industry in lactic acid (LA) production was investigated in order to replace expensive nitrogen sources (such as yeast extract) with cheaper and renewable nitrogenous materials ...
Aging of transformer insulation - experimental transformers and laboratory models with different moisture contents: Part I - DP and furans aging profiles
(IEEE-Inst Electrical Electronics Engineers Inc, Piscataway, 2019)
The paper presents the results of a comparative study on accelerated aging of specially designed experimental transformers and their corresponding laboratory models. The experimental transformers are 300 kVA, with insulation ...
Chemometric study of chromatographic and computational bioactivity parameters of diphenylacetamides
(Wiley, Hoboken, 2019)
Selected chemometric methods were used to form models that define the qualitative and quantitative dependence between the chemical structure and the parameters of potential biological activity (lipophilicity, retention, ...
Validation of energy-dispersive X-ray fluorescence procedure for determination of major and trace elements present in the cement based composites
(Pergamon-Elsevier Science Ltd, Oxford, 2019)
Adjustment and subsequent validation of energy-dispersive X-ray fluorescence (ED-XRF) method for cement based binders with addition of mineral raw materials (fly ash, zeolite and bentonite) was conducted. Eighteen chemical ...
Electrochemical synthesis and characterization of poly(o-toluidine) as high energy storage material
(Pergamon-Elsevier Science Ltd, Oxford, 2019)
Poly(o-toluidine) (POT) is electrochemically synthesized on graphite electrode at constant current density of 1.5 mA cm(-2) from aqueous electrolyte of 1.0 mol dm(-3) H2SO4 and 0.25 mol dm(-3) o-toluidine. Electrochemical ...
Utilization of agro-industrial waste for removal of copper ions from aqueous solutions and mining-wastewater
(Elsevier Science Inc, New York, 2019)
In this study, unmodified lemon peel, as agro-industrial waste, was used to investigate removal efficiency of copper ions from aqueous solutions and mining wastewater. The effects of solution pH, adsorption time, metal ion ...