Search results for "ample"
showing 10 items of 2398 documents
Gendered Migratory Pathways: Exploring the Work Trajectories of Long-Term Romanian Migrants
2018
This chapter analyzes the work trajectories of Romanian returnees who lived and worked for a long period of time in other EU countries. To understand the evolution of the work dimension of migrants’ lives, the chapter is built on subjective evaluations of their work experiences before migration, during their stay abroad, and upon return. The qualitative methodology and homogenous sample allow us to employ a gendered perspective on the relationship between international migration and individuals’ work trajectories. Employing a classical sociological distinction between agency and structure, the chapter illustrates four contrasting patterns of work trajectories. Agentic models are differently…
The importance of developing the entrepreneurial capacities in sport sciences university students
2017
ABSTRACTEntrepreneurship in the sports sector plays a key role in the increasing demand for sports professionals that possess entrepreneurial skills. Universities may help build the skills of sports science graduates by adopting educational policies to promote entrepreneurship. However, the capabilities that must be achieved to this end, and other factors, are unclear. Therefore, the aim of this study is to understand what perceived capabilities, internal factors (entrepreneurial courses), and external factors (environment) influence entrepreneurial intentions of students of physical activity and sport sciences. To achieve these goals, we analysed a sample of undergraduate and postgraduate …
COUNTRY LIFE QUALITY IN THE OPINION OF YOUNG PEOPLE IN RESPECT OF THEIR FIRST JOB LOCATION DECISION – SUBJECTIVE APPROACH
2017
Despite advancement, numerous country regions have been observing adverse trends in terms of birth rates, society ageing, and negative migration balance. Such tendencies seem to affect particularly eastern (Podkarpacie, Podlasie) and western (Opolszczyzna) regions. Therefore, this article is aimed at investigating how young people assess rural life quality and identifying their preferences when choosing where to study, start their first job, or run their first business. The research sample consists of country-based farming school students and young country students of Opole colleges and universities. The level of country life has been presented through material and living conditions, while …
CEO gender and SMEs innovativeness: evidence for Spanish businesses
2021
AbstractThis paper analyses the role of gender of the chief executive officer (CEO) on the propensity to introduce innovations using a sample of 1405 Spanish small- and medium-sized enterprises (SMEs). We examine whether there are significant differences between female- and male-led businesses in terms of their propensity to innovate, and whether these differences may be explained by factors related to the attributes of the CEO concerning risk tolerance, self-confidence, education level and cooperative behaviour. In particular, this study tests if the linkages between these managerial attributes and the propensity to innovate are influenced by the gender of the CEO. Using a multivariate pro…
Benchmarking energy efficiency of water treatment plants: Effects of data variability
2019
This study evaluates, for the first time, the energy efficiency of a sample of drinking water treatment plants (DWTPs) using the data envelopment analysis (DEA) tolerance method, which is based on the simulation of scenarios to integrate data variations. The integration of data uncertainty in energy efficiency estimation changes drastically results for approximately one-third of the DWTPs evaluated. The results showed that, even in the best-case scenario, most of the DWTPs evaluated are inefficient and may therefore, be able to reduce the energy used to treat raw water. From a policy perspective, the findings of this study reveal that omitting data variability in benchmarking would involve …
High-Performance Liquid Chromatographic Study on Oxidation Products of Lignin and Humic Substances
1991
We describe a convenient method of preparing samples and characterizing the mixture of degradation products obtained from alkaline cupric oxide oxidation of water samples containing lignin and humic substances. The method was applied to one unpolluted humic water sample and a total mill effluent of a kraft pulp mill. The fractions (Mr > 1000) obtained by ultrafi1tration were oxidized and the products (mixtures of degradation products) were analyzed by reversed-phase high-performance liquid chromatography (Spherisorb 5 ODS column). Acetonitrile-0.01 M phosphate buffer (pH 2) was used as the eluent in a gradient system and UV (set at 280 nm) as the detection system. Differences in the …
The miniaturised emission chamber system and home-made passive flux sampler studies of monoaromatic hydrocarbons emissions from selected commercially…
2017
Abstract The estimation of the emission rate of organic compounds released from various types of indoor materials can be performed using stationary environmental test chambers (ETC) classified as ex-situ methods or small-scale portable analytical devices based on the use of passive technique at the stage of analytes sampling from the gaseous phase (in-situ methods). The paper presents results of emissions of selected organic compounds from the monoaromatic hydrocarbons group (benzene, toluene, ethylbenzene, p,m-xylene and styrene) emitted from the surfaces of various types of commercially-available floor coverings and the underlay made of polyurethane foam which might be installed indoors u…
Chemical compounds and toxicological assessments of drinking water stored in polyethylene terephthalate (PET) bottles: A source of controversy review…
2012
A declaration of conformity according to European regulation No. 10/2011 is required to ensure the safety of plastic materials in contact with foodstuffs. This regulation established a positive list of substances that are authorized for use in plastic materials. Some compounds are subject to restrictions and/or specifications according to their toxicological data. Despite this, the analysis of PET reveals some non-intentionally added substances (NIAS) produced by authorized initial reactants and additives. Genotoxic and estrogenic activities in PET-bottled water have been reported. Chemical mixtures in bottled water have been suggested as the source of these toxicological effects. Furthermo…
Analysis of Trace Pharmaceuticals and Related Compounds in Municipal Wastewaters by Preconcentration, Chromatography, Derivatization, and Separation …
2014
A significant portion of pharmaceuticals and other organic chemicals consumed by people and animals are released into municipal wastewater treatment plants. Most of them are degraded during the wastewater treatment processes, but some of them degrade only partially and may be widely transported and dispersed into the aquatic environment. This is why efficient and fast analytical methods are needed for detection of organic compounds in wastewaters at trace levels. Because wastewaters often consist of complex matrices and high-molecular mass materials, e.g., lignocellulosic biomass, which may bring challenges to the sample preparation procedures, efficient pre-concentration methods such as so…
Fractionation of mercury in sediments during draining of Augusta (Italy) coastal area by modified Tessier method
2013
Abstract A modified Tessier method was applied to sediments dredged from Augusta (Italy) coastal area with the purpose of establishing the amount and the forms in which mercury is present in the different sediment fractions. The mercury fractionation was made by measuring the concentration of the metal ion on the solutions and directly on the sediment fractions obtained by sequential extraction. The measurements on the solutions as well as that on the solid fractions were carried out by using a Direct Mercury Analyser, DMA 80. This new instrument does not require sample preparation, and gives results comparable to those obtained with CV-AAS and ICP-MS and few minutes are necessary for each …