bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ways to Determine the Technical Status of the Vehicles’ Braking System by Means of General Diagnosis
Authors: Todea Paul , Lazăr Daniel 
Published: July 2017

Abstract
Vehicles’ breaking system is one of the basic elements that lead to the maintenance of technical and road safety during transport activities on public roads or other special conditions. Therefore, particular attention is paid to all maintenance work planned or occasionally carried out on such system, as a high coefficient of vehicles availability results in an increased percentage of their productivity. Of course, there is diagnosis equipment for each element, and the brake booths within MOT centres accurately indicate the values of the measured parameters, following repair, adjustment and control operations for troubleshooting. Still, there are certain cases requesting the check of breaking system either analytically or by field experiments, i.e. when vehicles are driven on rough and rugged ground, during military specific missions and activities, where their performance no longer allows specialized equipment or when such equipment does not exist. This works presents alternatives to determine the technical condition of the braking system by means of typical solutions for the general diagnosis type.
Kinetics of Enantiomerically Enriched Synthesis of Solketal Esters Using Native and SBA-15 supported P. Fluorescens Lipase
Authors: Zniszczoł Aurelia , Szymańska Katarzyna , Kocurek Jacek , Bryjak Jolanta , Walczak Krzysztof , Jarzębski Andrzej 
Published: July 2017

Abstract
The studies showed that alkaline lipase from Pseudomonas fluorescens enables an irreversible transesterification of vinyl esters to give enantiomeric excess (eeR) of about 80% using vinyl butyrate as acyl donor and diisopropyl ether as a solvent, at partially optimized conditions. For the native lipase the process was adequately described by a five-parameter Ping-Pong Bi Bi model for both enantiomers plus expression accounting for the formation of enzyme-acyl donor complex, but for the same lipase supported on mesoporous materials of SBA-15-Oc type, R-product inhibition also had to be taken into account. The use of hydrophobic support increased by more than two-fold the rate of the S-solketal conversion but even more that of R-solketal. Thus the immobilization of lipase had very positive effect on the process kinetics but decreased its enantioselectivity.
Measurements of Hydrogen Solubility in Nitrobenzene/Aniline Mixtures
Authors: Srebniak Aleksandra , Kraut Manfred , Görke Oliver , Sobieszuk Paweł 
Published: July 2017

Abstract
Measurements of hydrogen solubility in various nitrobenzene-aniline mixtures were conducted in an autoclave reactor with a stirrer and control of temperature. The solubility of hydrogen was measured at 7 different values of temperature (30 °C, 40 °C, 50 °C, 90 °C, 130 °C, 170 °C, 210 °C, respectively), 3 values of stirrer rotation speed (1200 rpm, 1600 rpm, 2000 rpm, respectively) and a range of pressure of 20 ‒ 30 bar. Moreover, pure aniline, pure nitrobenzene and their mixtures with different concentrations were used. In the next step, values of Henry’s constant were calculated. Based on experimental data a dependence of Henry’s constant on temperature for pure aniline and pure nitrobenzene was proposed. Additionally, for each temperature correlations between Henry’s constant and aniline’s concentration in mixture of nitrobenzene-aniline were found.
Waste Plant Material as a Potential Adsorbent of a Selected Azo Dye
Authors: Tomczak Elwira , Tosik Paweł 
Published: July 2017

Abstract
This paper discusses the adsorption of Direct Orange 26 azo dye on sunflower husk - an agricultural waste product. During the study, sorption kinetics and equilibrium as well as sorption capacity of the husk were investigated. The adsorption kinetics was analyzed using pseudo-first and pseudo-second order equations, which indicated a chemical sorption mechanism. The sorption equilibrium was approximated with the two-parameter Freundlich and Langmuir equations and the three-parameter Redlich-Peterson equation. The main experiments were carried out in a laboratory adsorption column under different process conditions. Experimental data were interpreted with the Thomas model, based on the volumetric flow rate, initial composition of the feed solution and mass of the adsorbent. The results of modeling the adsorption equilibrium, adsorption kinetics and adsorption dynamics were evaluated statistically.
Balancing Between Roles and Duties – The Creativity of Mothers
Authors: Kwaśniewska Joanna Maria , Lebuda Izabela 
Published: July 2017

Abstract
We raise two issues in the article at hand: how women who are mothers fulfil their creative needs, and what significance they ascribe to creativity in their role as mothers. A thematic analysis of structured interviews with twenty-seven women suggests that for mothers, creative activity mostly concerns fulfilling one’s responsibilities as part of the role taken on (be it parental or professional), and the main creative challenge they face is achieving a balance between their private and professional lives. Creativity in their role as mothers relates predominantly to two areas of activity: communication with the child and activities creating a climate conducive to the child’s development of creative ability. We discuss the obtained results in relation to those of previous research on the relationship between motherhood and creativity.
Wielkie Nić / The Big Thread. Case Study
Authors: Grygiel Agnieszka 
Published: July 2017

Abstract
The aim of this case study is to describe the social project "Wielkie nić / The Big Thread" - the creation of embroidered messages - which has many features in common with children’s play. Just like play, it needs space, time and rules, but at the same time, also a lot of freedom. And neither need spectators. Moreover, the project - like a form of symbolic play, where children use abstract things to represent reality - has a metaphorical significance. The threads, used for common embroidery, truly connect people. They realize how much they have in common and how they need each other. This can give a sense of unity and community and even change their consciousness.
Tax Audit as a Significant Factor in Suppressing Tax Evasion
Authors: Todorović Miodrag , Stanković Ivan , Ljajić Samir 
Published: July 2017

Abstract
The fact that an enormous portion of the public revenue is lost through tax evasion indicates the inevitability of taking various measures to suppress it. According to the latest statistics, the outflow from the gross domestic product through tax evasion is 30%. The aim of this paper is to point to the systematisation of the matter relating to an assessment of the efficiency of tax audit as a pillar of the reduction of tax evasion and informal economy in our country. Methodology implies a descriptive research. Collected data were meticulously analysed by means of basic arithmetic operations. Due to serious consequences of tax evasion, it is necessary to upgrade the tax system modelled on developed market economies. It is necessary to modernise a Tax Administration, as well as to improve the co-operation between its segments. A synthetic income tax should be introduced. It would encompass all revenues that a taxpayer generates per year. If all taxpayers settled their tax liabilities, it would create space for tax burden reduction. In legal states only “the bravest” resort to tax evasion. Most countries have undertaken a series of measures in order to suppress tax evasion and informal economy. However, the effectiveness of the struggle varies.
Influence of the Governmental Investment Subsidies On Development of Serbian Viticulture
Authors: Vasiljević Zorica , Popović Nikola , Dimitrijević Bojan , Vujović Dragan , Bulatović Branka Kalanović 
Published: July 2017

Abstract
Viticulture is an important branch of Serbian agriculture. It has a long tradition, but there is the decreasing trend both in areas under vineyards and in grape production. The analysis intends to answer the question what are the reasons for those trends. The main goal of the paper is to analyse the relationship between the decrease in areas under vineyards and the level of investment effectiveness in this type of production. The paper analyses the influence of the governmental agrarian policy measures onto increase of investments′ effectiveness in vineyard establishment. The government has adopted the measures for subsidising the establishment of vineyards. The research analyses the economic effectiveness of investments by using the calculation of investments as well as dynamic multi-periodic methods of investment analysis (Net Present Value - NPV and Internal Rate of Return - IRR). The data for investment analysis (investments, the value of production, operating costs) have been collected by the farms through the survey made in Central Serbia, while the data on the governmental subsidies have been taken from The Ministry of Agriculture, Forestry and Water Management of the Republic of Serbia. The analysis has shown that investments into vineyards are not profitable without governmental subsidies and support.
Wine Marketing: Impact of Demographic Factors of Serbian Consumers On the Choice of Wine
Authors: Radovanović Vladimir , Đorđević Dejan Ž. , Petrović Jelena 
Published: July 2017

Abstract
How consumers will behave when buying wine depends on many factors, among which economic, social, demographic, psychological and situational ones are highlighted. Research in wine consumer attitudes in Serbia is aimed at creating appropriate marketing strategies. This paper analyses the influences of demographic factors on wine consumption.Special attention was paid to the impact of the wine characteristics that affect the decision to buy the local or imported wines with geographical origin. It should be added that wine tourism is particularly important in increasing the sales of wine by direct and indirect means.To this aim, 1.705 wine buyers and consumers were interviewed during 2015. Based on Chi-test, it has been proven that the age group affects the decision on the purchase of wine. Understanding consumer motivation is possible through an adequate marketing approach which will provide increased sales of domestic wine and the quicker development of the national market.
Comparative Analysis of Serbian and European Legislation in the Area of Waste Management
Authors: Krstić Mladen , Milenković-Kerković Tamara 
Published: July 2017

Abstract
Waste management, ecological consciousness and environmental protection have become increasingly topical issues ever since the beginning of the 21st century, and in favour of this claim is the fact that there is an increasing number of authors dealing with environmental law, as well the level of global ecological consciousness. The contemporary consumer society is characterized by the fact that it creates a plethora of different kinds of waste. The goal is to create a modern system of integrated waste management in order to encompass the cycle of manufacturing and consumption with a recycling process at the end of the consumer products lifespan. The purpose of this paper is to provide an overview of the European legislation, as well as to analyse the Serbian legislation in the area of waste management. The European legislation on waste management is much older and far more developed than its Serbian counterpart, hence, it represents the foundation for future development of regulations in Serbia. The current waste management legislation in Serbia is largely based on the EU legislation, however, owing to the insufficiently matured and stable Serbian institutions, implementation of these regulations is below the expected level.
An Analysis of the Relationship Between Job Satisfaction and Employee Engagement
Authors: Vorina Anton , Simonič Miro , Vlasova Maria 
Published: July 2017

AbstractThis paper examines the relationship between employee engagement and job satisfaction. People spend most of their time at work, and their motivation is considered to be an important factor for job performance. Enthusiastic employees, who focus their efforts on achieving their companies′ goals are a key competitive advantage in the modern world. The effect of employee engagement on business performance has been studied by various experts. They found out the similar conclusion: “the more enthusiastic the workers are, the better operating results they achieve for the company”. An occasional sample of 594 respondents who are employed in the public and non-public sector in Slovenia was used for the purpose of this study. The main goal of the research is to determine whether (and how) the employee engagement influences job satisfaction. A written survey was conducted from 4 January 2016 to 14 March 2016. IBM SPSS 20 was used for the statistical analysis. The results confirm that the relationship between employee engagement and job satisfaction is positive and statistically significant (5 % significance level), based on the linear regression F (1, 583) =296.14, p-value = 0.000, R-square = 0.337. The results also show that there is no statistically significant difference between employee engagement and gender and there is no statistically significant difference between job satisfaction and gender.
Relationship of Ages and Gender of the Employees in Organisations in the Republic of Serbia and Their Job Satisfaction
Authors: Djordjević Biljana , Ivanović-Djukić Maja , Lepojević Vinko 
Published: July 2017

AbstractThe purpose of this paper is to investigate the relationship between ages and gender of employees in organisations in Serbia and their job satisfaction. When it comes to age-job satisfaction relationship the assumption is that this relationship could be represented by the “U” curve. When it comes to gender-job satisfaction relationship the authors investigate whether there is a difference in the overall job satisfaction between men and women as well as whether there is a statistically significant influence of different job facets on job satisfaction of men and women in different ages in organisations in Serbia. For testing these assumptions descriptive statistics and multivariate analysis of variance were applied. The research methodology also included theoretical analysis of the concept of job satisfaction. Results of the study have shown that the level of job satisfaction of employees of different age cannot be represented by the “U” curve. Further, the results have shown that there is a small difference in the overall job satisfaction between men and women as well as that there are some dimensions of job that have statistically significant influence on job satisfaction of men and women in different ages. The practical implication of this paper is that it, based on the obtained results, suggests to the managers certain human resource management (HRM) practices in order to gain more satisfied and, hence, more productive employees.
Advanced Deformation Stages in Duplex Steel Investigated using Neutron and Synchrotron Radiation
Authors: Gadalińska E. , Baczmański A. , Zhao Y. , Le Joncour L. , Wroński S. , Panicaud B. , Francois M. , Braham C. , Buslaps T. 
Published: July 2017

Abstract
The grain scale of materials is an area still open for investigations within the field of materials science. The most helpful tools to perform this type of research are diffraction methods. Within the research project presented in this paper two experiments were carried out employing two different types of radiation: neutron (ISIS) and synchrotron (ESRF). The aim of the work was to describe the stress state in the necking zone during the occurrence of a damage phenomenon (Fig. 1.) in separate phase and to check the level of the homogeneity. The supplemental tools were the finite elements method and self-consistent modeling – it testified, confirmed and completed our experimental results and allowed us to formulate the justifiable conclusions.
The Impact of Damage in Anneling Inconel 718 on Hardness Measured by the Vickers Method
Authors: Malicki Maciej , Gadalińska Elżbieta , Chmiel Maciej 
Published: July 2017

Abstract
In the previous work [1] it was shown that strain hardening had considerable impact on the hardness of Inconel 718. In order to verify the weakening of the material associated with the damage mechanism in the tested material, the hardness tests were performed on the stretched specimen which was subsequently heat treated. The tests revealed that, after heat treatment, the measured hardness was reduced with an increasing degree of the plastic deformation present prior to heat treatment.
Comparison of Residual Stress State on Sheets Faying Surface after Standard and NACA Riveting-Numerical Approach
Authors: Wronicz Wojciech 
Published: July 2017

Abstract
One crucial characteristic of the aircraft structure are fatigue properties and rivets are usually critical areas in metal airframes due to fatigue cracks nucleation. According to literature, the NACA riveting method offers a huge increase in fatigue life of riveted lap joints. This paper presents FE simulations of quasi-static riveting on a press for standard countersunk rivets and the NACA riveting in two configurations: with a normal brazier rivet and a brazier rivet with a compensator. The analyzed configurations have been compared based on the stress courses on the sheets faying surfaces after riveting process. Due to a lack of data, the rivet length and the squeezing force value were assumed for NACA riveting based on FE simulations. The results indicated beneficial influence of the NACA riveting in the outer sheet (with a countersunk) and disadvantageous influence in the inner sheet. This effect was stronger in the case of the rivet with a compensator.
Hydrological properties of bark of selected forest tree species. Part 2: Interspecific variability of bark water storage capacity
Authors: Ilek Anna , Kucza Jarosław , Morkisz Karolina 
Published: July 2017

Abstract
The subject of the present research is the water storage capacity of bark of seven forest tree species: Pinus sylvestris L., Larix decidua Mill., Abies alba Mill., Pinus sylvestris L., Quercus robur L., Betula pendula Ehrh. and Fagus sylvatica L. The aim of the research is to demonstrate differences in the formation of bark water storage capacity between species and to identify factors influencing the hydrological properties of bark. The maximum water storage capacity of bark was determined under laboratory conditions by performing a series of experiments simulating rainfall and by immersing bark samples in containers filled with water. After each single experiment, the bark samples were subjected to gravity filtration in a desiccator partially filled with water. The experiments lasted from 1084 to 1389 hours, depending on the bark sample. In all the studied species, bark sampled from the thinnest trees is characterized by the highest water storage capacity expressed in mm H2O · cm-3, while bark sampled from the thickest trees - by the lowest capacity. On the other hand, bark sampled from the thickest trees is characterized by the highest water storage capacity expressed in H2O · cm-2 whereas bark from the thinnest trees - by the lowest capacity. In most species tested, as the tree thickness and thus the bark thickness and the coefficient of development of the interception surface of bark increase, the sorption properties of the bark decrease with bark depth, and the main role in water retention is played by the outer bark surface. The bark of European beech is an exception because of the smallest degree of surface development and because the dominant process is the absorption of water. When examining the hydrological properties of bark and calculating its parameters, one needs to take into account the actual surface of the bark of trees. Disregarding the actual bark surface may lead to significant errors in the interpretation of research results.
Regulation of gene expression for defensins and lipid transfer protein in Scots pine seedlings by necrotrophic pathogen Alternaria alternata (Fr.)
Authors: Hrunyk Nataliya , Gout Roman , Kovaleva Valentina 
Published: July 2017

Abstract
Damping-off disease in pine seedling, caused by fungi and oomycetes (Fusarium, Alternaria, Botrytis, Phytophthora) and other species, is one of the most dangerous diseases in conifer nurseries and greenhouses worldwide. Alternaria alternata is a necrotrophic pathogen, which causes early blight in higher plants and results in massive economic losses in agro-industry as well as in forestry. Pine seedlings that lack strong lignificated and suberized cell walls at early stages of their growth are vulnerable to damping-off disease. So, triggering the synthesis of antimicrobial compounds, such as phytoalexins, anticipins and pathogenesis-related (PR) proteins, is the main defense strategy to confine pathogens at early stages of pine ontogenesis. Defensins and lipid transfer proteins are members of two PR-protein families (PR-12 and PR-14 respectively) and possess antimicrobial activities in vitro through contact toxicity, and the involvement in defense signalling. In this work, we describe the changes in the expression levels of four defensin genes and lipid transfer protein in Scots pine seedlings infected with A. alternata. The expression levels of PsDef1 and PsDef2 increased at 48 h.p.i. (hours post inoculation). The levels of PsDef4 transcripts have increased after 6 and 24 hours. Notably, at 48 h.p.i., the level of PsDef4 transcripts was decreased by 1.2 times compared to control. The level of PsDef3 transcripts was reduced at all three time points. On the other hand, the level of PsLTP1 transcripts increased at 6 h and 48 h.p.i.; while at 24 h.p.i., it decreased by 20% when compared to the control sample. Our results suggest that defensins and lipid transfer protein are involved in the defense response of young Scots pine to necrotrophic pathogen. Thus, those genes can be used as the molecular markers in forestry selection and development of the ecologically friendly remedies for coniferous seedlings cultivation in greenhouses and nurseries.
The pink hibiscus mealybug Maconellicoccus hirsutus (Green) (Hemiptera: Pseudococcidae) in Greece
Authors: Milonas P.G. , Partsinevelos G.K. 
Published: July 2017

Summary
The invasive pink hibiscus mealybug, Maconellicoccus hirsutus (Green) (Hemiptera: Pseudococcidae), is reported for first time in Greece. Individuals of the mealybug were found infesting Hibiscus rosa-sinensis (Linnaeus) (Malvaceae) in private and public gardens in the urban environment in Rhodes, Dodecanese islands, East Greece. This is the first report of genus Maconellicoccus in Greece.