bluuebunny/crossref_metadata_2025_split huggingface dataset:
Chemical Oxidation of Polycyclic Aromatic Hydrocarbons in Water By Ferrates(VI)
Authors: Antošová Barbora , Hrabák Pavel , Antoš Vojtěch , Wacławek Stanisław 
Published: April 2021

Abstract
Polycyclic aromatic hydrocarbons (PAHs) are a common part of the environment where they come from burning fossil fuels (through an incomplete combustion process). From a toxicological point of view, PAHs are considered to be carcinogens with a mutagenic and teratogenic effect. On the other hand, ferrates are generally believed to be the ideal chemical agent for water treatment due to their strong oxidation potential. Herein, the efficiency of degradation of PAHs (with the special emphasis on B[a]P) by ferrates under laboratory conditions was studied. The formation of degradation products was also considered. For this, two types of ferrates were used and both of them efficiently degraded B[a]P. When comparing ferrates that were bought from a Czech and USA company, no significant changes in terms of B[a]P degradability were observed. It was determined that the degradation efficiency of PAHs by ferrates was dependent on their molecular weight. Two and three cyclic PAHs have been completely degraded within 30 minutes, whereas five (and more) cyclic PAHs, only partially. The results obtained with ferrates were compared to the ones obtained with a classical oxidizing agent - KMnO4. In a qualitative test to detect degradation products of PAHs, two were identified, namely fluoren-9-one derived from fluorene and acentaphthylene, formed from acenaphthene.
Effects of Plant Extracts and Disinfectant Huva-San TR 50 on the Quality of Carrot (Daucus carota L.) Seeds
Authors: Górski Romuald , Szopińska Dorota , Dorna Hanna , Rosińska Agnieszka , Stefańska Zuzanna , Lisiecka Jolanta 
Published: April 2021

Abstract
The aim of the study was to determine the effect of Aloe vera (L.) Burm.f. (Aloe) and Morinda citrifolia L. (Indian mulberry) plant extracts and disinfectant Huva-San TR 50 (hydrogen peroxide stabilized with silver ions) on carrot seed quality. The seeds of two carrot cultivars Amsterdam (sample I) and Berlikumer 2 (sample II), were soaked in solutions of Aloe and Indian mulberry extracts and Huva-San TR 50 at concentrations of 0.025 %, 0.05 % and 0.1 % for 30 min. Untreated seeds and seeds soaked in distilled water for 30 min were used as controls. Seed germination was assessed after 7 and 14 days of incubation. The speed and uniformity of seed germination (vigour) were evaluated. Mycological analysis was performed using a deep-freeze blotter test. Sample I was characterized by lower germination at the first and the final counts than sample II and higher seed infestation with Alternaria radicina. Treating seeds of sample I with Morinda citrifolia plant extract at concentrations of 0.025 and 0.05 % reduced their infestation with Alternaria alternata and A. radicina, increased germination at the first and the final counts, and did not affect seed vigour. The effects of Aloe extract and disinfectant Huva-San TR 50 on seed quality parameters varied depending on their concentration. Hence, further studies are necessary to establish the optimal conditions for carrot seed treatment.
A Multicriteria Analysis on Regional Disparity of Economic and Demographic Development in the Republic Of Serbia
Authors: Petrović Jelena , Radukić Snežana , Radović Milica 
Published: April 2021

Abstract
The disparities between the regions are the main obstacle to a balanced and harmonious economic and social development. Increasing regional disparities in the countries in transition has led to the increasing attention paid to multicriteria analysis of regional disparity of economic and social development. The regional development in Republic of Serbia, as a country in transition, after wave of recession faced with additional challenges, such as: increasing the economic gap between regions and increasing regional demographic regression. The purpose of this research is to evaluate the regional disparity of economic development as well as the regional disparity of demographic development in the Republic of Serbia. The aim is to analyze the interdependence between economic and demographic development of the regions. According to the six indicators of economic development and the six indicators of demographic development, this paper makes the analysis by VIKOR and the method of ENTROPY as well as correlation analysis. The results of research indicate that there is a statistically significant relationship between economic and demographic development of regions in the Republic of Serbia. This paper indicates the need for a further research in order to identify the main obstacles that countries face within the process of economic and demographic development.
Impact of Digitalisation on Economic Growth, Productivity and Employment
Authors: Arsić Milojko 
Published: April 2021

Abstract
Since the industrial revolution, technological innovations have enabled rise in productivity, employment, standard of living and the total population several times. In the last 15 years productivity growth has slowed-down in the most of large economies, probably due to slow diffusion of advanced IT solutions, but also due to inadequate statistical measurement of the value of IT services and slow progress in complementary and other technologies. The acceleration of productivity growth in the future is possible to foster through larger public investment in infrastructure and fundamental research, tax incentives and subsidies attached to innovations in the private sector, as well as through promotion of entrepreneurship and the reform of education system. The development and diffusion of digitalisation and other technologies is expected to trigger a slight acceleration in productivity, while explosive growth in productivity, as predicted by some theoreticians, is not likely to happen. The net effect of digitalisation on employment will be probably negative, but it is uncertain how much will be offset by a rise in availability of goods and services and creation of new types of goods and services. Employment will depend on the speed of adjustment of education system to technological changes and labour market requirements, as well as on the possibilities for vocational education and change in qualifications. An important reserve, which may reduce a drop in employment and enhance the welfare of citizens, lies in additional reduction of the working hours. In the long run, it is expected that the world population growth is to slowdown and then become negative, which will lead to a decrease in the labour force. In that case, full employment will be attained even with the decline in the number of jobs. In case of long-term massive unemployment, there is also an option for introduction of universal basic income or other type of social benefits, in order to prevent a significant rise in economic inequality.
Journey through the writing process: Metaphors of thesis writing experience
Authors: Hanić Jasmina , Pavlović Tanja , Jašić Alma Jahić 
Published: April 2021

Abstract
This paper aimed to investigate metaphorical images used by master’s students in order to gain an insight into their schemata for thinking about the process of master’s thesis writing. Semistructured interviews on the topic of master’s thesis writing with three students coming from humanities, social sciences and natural sciences served as a corpus from which the data were extracted. The paper analysed participants’ unconscious use of metaphorical language in their narratives, mirroring their perception of the thesis writing process. The results revealed that the participants’ personal experience revolves around the concept of journey as the central image they share and the journey metaphor, along with a group of related specific metaphors, serves to illustrate the complexity of the writing process itself.
Consumers Engagement Toward Food Brands – The Case of Dairy Products
Authors: Gazdecki Michał , Goryńska-Goldmann Elżbieta 
Published: April 2021

Abstract

Research background: As food markets continue to develop the role and position of food consumers evolve as well. Food producers redefine their market strategies and focus on creating loyalty, building good contacts and consumers’ engagement towards brands.

Purpose: The purpose of this paper is to analyze the engagement of consumers towards selected food brands in the category of dairy desserts.

Research methodology: The paper was prepared and based on the data collected in the survey among 200 respondents. The research subjects were consumers who declared the consumption of milk based desserts and the object of analyses was consumers’ brand engagement considered at the behavioral level.

Results: Consumers with the opportunity to interact with a brand increase their propensity to recommend, which is a necessary condition for creating a reference market. As for the smaller companies, gaining sales growth through distribution and promotional activities may be difficult due to budget constraints, actions aimed at creating a reference market may be more effective.

Novelty: Although the issue of consumer engagement is an important area of scientific work, there is less interest in this field in the context of food markets. This paper provides additional knowledge about the context of food market products, which should be continued in further research. Based on our results, marketing strategies, mainly for a SME’s, can be developed.
The Role of Technology in Building a Competitive Advantage – Programmatic Buying and Its Impact on the Competitiveness of an Organization
Authors: Kozielski Robert , Sarna Nikodem 
Published: April 2021

Abstract

Research background: Recent years have brought a real explosion of new tools and methods of conducting market activities based on new technologies. Solutions based on new technologies carry great development potential for an organization. There is a belief that new technologies – in particular, programmatic buying (analyzed in this article) – also impact an organization’s ability to compete. Programmatic buying (PB) is a tool but also a new model of sales and purchase of advertising, under which the current package approach (traditional) has been replaced by a fully automated individualized approach.

Purpose: The aim of the article is to assess the impact of technology on an organization’s ability to compete with the example of PB.

Research methodology: The empirical basis is both qualitative and quantitative research conducted in 2018–2019.

Results: The empirical material provides the basis for rejecting the main research hypothesis which claims that the usage of PB increases the effectiveness and efficiency of advertising and thanks to this on a companies’ ability to compete. PB has a positive impact only on the effectiveness and efficiency of graphic ads. The same relation was not observed in terms of video ads. Nevertheless the results are not clear. It is recommended to deepen the analysis.

Novelty: Due to the fact that programmatic buying is a relatively new technologic solution there is no research that proves its impact on the marketing activities efficiency as well as its role in building the competitive advantage of a company, especially on the Polish or European market. This research starts the discussion of the role of PB in companies’ market activities and fits in the dispute of the significance of new technologies.
Geocaching in education – a review of international experiences Part 2. Recipient, location and subject matter of education
Authors: Referowska-Chodak Ewa 
Published: April 2021

AbstractThis article discusses the recipient, locations and subject matter of education using geocaching, based on a literature review. The aim is to aid the implementation of similar methods of education in Poland, including forest education, by providing practical information and guidelines.In the literature, the most frequently mentioned recipients of geocaching education are pupils, especially between 10–18 years of age, and university students. This is due to the fact that the authors of the publications were mostly school and academic teachers, as well as students and doctoral students of teaching and social faculties. For the same reason, the preferred locations of educational geocaching were also school/university areas and their immediate vicinity, as well as urban areas, including parks. Locations modified to a lesser degree by anthropogenic influences such as protected areas, waterfronts and forests were also mentioned. The subject range of geocaching classes is very wide, although geography, mathematics, biology, ecology, history, culture, modern technology/equipment, linguistics and physical education were particularly frequently mentioned. Subjects related to geology, local society, economy and art were also reported. Regarding recipients of educational geocaching, the literature clearly indicates limitations in its application to the youngest age groups, while at the same time its great usefulness in the education of all other age groups is highlighted. In addition to the currently dominating anthropogenic geocaching locations, Poland offers a large variety of natural places, such as forest areas, which are already used for informal field education. These locations furthermore enable multidisciplinary education, which is in line with the extremely wide range of subject content proposed for educational geocaching.
Further species within Arecaceae (Palmae; Coryphoideae) to non-native flora of Tunisia and North Africa
Authors: Mokni Ridha El 
Published: April 2021

Abstract
Five new alien taxa are here recorded from Tunisia. Reported taxa (Livistona chinensis, Phoenix canariensis, P. reclinata, P. theophrasti and Washingtonia robusta) belong to the subfamily Coryphoideae (Arecaceae). Updated nomenclature, brief descriptions, general and national distributions are provided for each species. Livistona chinensis and Phoenix theophrasti are here reported for the first time in North Africa. Identification keys are also provided.
Comparative assessment of Western Podolia meadow steppes (Ukraine) based on the synphytoindication method
Authors: Lysenko Henadii M. , Danylyk Ivan M. , Iemelianova Svitlana M. , Borsukevych Liubov M. , Sosnovska Svitlana V. 
Published: April 2021

Abstract
The aim of our study is to establish the determinant ecological factors that have the greatest differential impact on the distribution of meadow steppe plant communities of Western Podolia (Ukraine) on the base of a synphytoindication analysis. There were 8 study sites within the study area in the L’viv and Ivano-Frankivsk regions. To determine the coenotic affinity of the studied species, 48 relevés were analyzed. Numerical classification based on the Modified TWINSPAN algorithm divided the dataset into five clusters, which have been identified as the associations Pastinaco sativae-Arrhenatheretum elatioris, Geranio sanguinei-Trifolietum alpestris, Inuletum ensifoliae, Jurineo calcareae-Stipetum capillatae and Lembotropio nigricans-Potentilletum arenariae. The results of gradient analyses indicate that the distribution of meadow steppe communities in the Podolia Upland closely correlates with a number of climatic (thermoregime and continentality of climate) and especially edaphic (soil humidity, soil acidity and carbonate content) ecological factors.
Geobotanical characterisation of the Trifolion squamosi nom. corr. alliance (class. Juncetea maritimi) in Catalonia and the Western Mediterranean
Authors: Corominas Gabriel Mercadal i 
Published: April 2021

Abstract
We present a summary of part of the phytogeographic results described in the author’s PhD thesis. In this case, we characterise and validate several syntaxa of subsaline meadows in the Trifolion squamosi nom. corr. alliance (class. Juncetea maritimi) in Catalonia (incl. NE Spain and SE France) and in other regions of the Western Mediterranean (N Algeria, Languedoc and Provence). In total, we study six syntaxa in geobotanical terms, based on synthetic tables and factor analyses of correspondence published previously in the thesis: one alliance (Trifolion squamosi), two associations and three subassociations (Agropyro-Trifolietum subass. typicum, subass. festucetosum comb. nova, subass. brachypodietosum nova; Festucetum arundinaceae).
Syntaxonomical analysis of sandy grassland vegetation dominated by Festuca vaginata and F. pseudovaginata in the Pannonian basin
Authors: Penksza Károly , Csontos Péter , Pápay Gergely 
Published: April 2021

Abstract

Festucetum vaginatae Rapaics ex Soó 1929 em. Borhidi 1996 is a characteristic association of the calcareous sandy areas of the Pannonian basin; its dominant grass species is Festuca vaginata. Another typical species of these sandy areas is the newly discovered F. pseudovaginata. The question is whether F. pseudovaginata forms an independent coenotaxa? Our study proved that F. vaginata and F. pseudovaginata populations grow separately and compose different associations. Stands dominated by F. pseudovaginata had a higher species richness and harboured twice as many Festuco-Brometea species compared to the Festucetum vaginatae stands. Diagnostic species of the Festucetum pseudovaginatae association are Festuca pseudovaginata, Colchicum arenarium, Ephedra distachya, Koeleria majoriflora, and Astragalus onobrychis. The number of species, the density of the individuals, and the variability and diversity of the vegetation separated it from the Festucetum vaginatae association; thus, it can be considered an independent endemic association. Festucetum pseudovaginatae has its own differentiating and dominant species: Carex stenophylla, Cynodon dactylon, Eryngium campestre, Kochia laniflora.
The Eurasian Dry Grassland Group (EDGG) in 2019–2020
Authors: Dengler Jürgen , Aleksanyan Alla , Ambarlı Didem , Biurrun Idoia , Dembicz Iwona , Kuzemko Anna , Török Péter , Venn Stephen 
Published: April 2021

Abstract
This report summarizes the activities and achievements of the Eurasian Dry Grassland Group (EDGG) from July 2019 to December 2020. During this period, Covid-19 allowed only one live event, the 14th EDGG Field Workshop to the alpine vegetation of Switzerland, organised ad hoc as a replacement for the cancelled Field Workshop in the Ukrainian steppes. The cancelled Eurasian Grassland Conference in Spain found a partial replacement in “Talk Grasslands!”, a series of online talks during winter 2020/2021. EDGG’s own diamond open access periodical, Palaearctic Grasslands, is a novel combination of scientific journal, photo magazine and member newsletter. With five issues during the reporting time it contributed much to EDGG’s attractiveness. EDGG edited four Special Features in international journals (Tuexenia, Hacquetia, Flora) and contributed 13 chapters on grasslands and shrublands of the Palaearctic biogeographic realm to the Encyclopedia of the world’s biomes. EDGG’s vegetation-plot database GrassPlot with multi-scale and multi-taxon diversity data of grasslands and other open habitats of the Palaearctic is now integrated into the EDGG website with the GrassPlot Diversity Explorer.
In-Season Strength Training in Elite Junior Swimmers: The Role of the Low-Volume, High-Velocity Training on Swimming Performance
Authors: Marques Mário C. , Yáñez-García Juan Manuel , Marinho Daniel A. , González-Badillo Juan José , Rodríguez-Rosell David 
Published: April 2021

Abstract
The aim of this study was to analyze the effect of long-term combined strength training (ST) and plyometrics on strength, power and swimming performances in elite junior swimmers during a competitive season. Ten elite junior swimmers (5 women and 5 men) completed the study (age: 16.6 ± 0.7 years; mass: 62.2 ± 5.4 kg; stature: 1.70 ± 0.07 m). The participants trained twice a week during 20 weeks. The ST program consisted of upper- and lower limbs exercises with low loads and low volume, lifting the load at maximal intended velocity. The effect of the training protocol was assessed using the 1RM in the full squat (SQ) and bench press (BP), jump height (CMJ), the maximal number of repetitions completed in the pull-up (PU) exercise and time during 50-m freestyle. Training program resulted in significant improvements in CMJ (12.1%, ES: 0.57), maximal dynamic strength in the SQ (16.4%, ES: 0.46) and BP (12.1%, ES: 0.34) exercises, the maximum number of repetitions completed during the PU test (90.7%, ES: 0.57) and swimming performance (-3.9%, ES: 0.45). There were no significant differences between both genders. The relative changes in swimming performance showed significant relationship with the relative changes in 1RM of SQ for pooled data (r=-0.66, p<0.05) and the relative changes in the PU exercise in female swimmers (r=-0.99, p<0.05). Therefore, coaches and strength and conditioning professionals should consider including in-season dry-land ST programs within the training routine in order to obtain further improvements in swimming performance.
Comparison of Muscle Activation and Kinematics in 6-RM Squatting With Low and High Barbell Placement
Authors: Tillaar Roland van den , Helms Eric 
Published: April 2021

Abstract
The aim of this study was to compare 6-RM muscle activation and kinematics in back squats with low and high barbell placements. Twelve resistance-trained males (23.5 ± 2.6 years, 86.8 ± 21.3 kg, 1.81 ± 0.08 m) with a minimum of 2 years of squatting experience performed a 6-RM using high and low barbell placements while muscle activation of eight muscles and joint kinematics were measured. During high barbell placement squats, lifting time was longer, with lower average velocity than low barbell placement. This was accompanied by a lesser knee flexion angle at the lowest point of the squat, and larger hip flexion angles during high, compared to low barbell squats. Furthermore, peak angular ankle, knee and hip velocities in the descending phase developed differently between conditions. No significant differences in muscle activation were found between conditions. Thus, our data suggests gross muscular adaptations between barbell placements may be similar over time, and therefore, from a muscular development standpoint, both squat styles are valid. Furthermore, unlike the low barbell placement, fatigue may manifest earlier itself in the high barbell squats during 6-RMs as sets progress toward a lifter’s maximal capacity, altering kinematics, especially in the last repetition.
Individual language management and language strategies of Hungarian students in Bratislava
Authors: Satinská Lucia Molnár 
Published: April 2021

Abstract
The paper focuses on the individual language management of Hungarian minority students from Southern Slovakia who migrated to study at university in the capital city of Slovakia, Bratislava. It presents language strategies of five students, based on their language biographies. Each student was interviewed three times during their first three years of study. The language problems of these students include maintaining their mother tongue and improving their skills in Slovak as well as balancing between the two languages in various spheres of life. Factors affecting the language use of the students are family, institutions, peer group and overcoming fear. The students deal with their everyday multilingualism according to several models, which can be described on the axis between Hungarian only to Slovak only, but the students mostly find themselves somewhere in between the two, depending on various spheres (family, university, jobs, peers).