bluuebunny/crossref_metadata_2025 huggingface dataset:
Exergy analysis of the Szewalski cycle with a waste heat recovery system
Authors: Kowalczyk Tomasz , Ziółkowski Paweł , Badur Janusz
Published: May 2018

The conversion of a waste heat energy to electricity is now becoming one of the key points to improve the energy efficiency in a process engineering. However, large losses of a low-temperature thermal energy are also present in power engineering. One of such sources of waste heat in power plants are exhaust gases at the outlet of boilers. Through usage of a waste heat regeneration system it is possible to attain a heat rate of approximately 200 MWth, under about 90 °C, for a supercritical power block of 900 MWel fuelled by a lignite. In the article, we propose to use the waste heat to improve thermal efficiency of the Szewalski binary vapour cycle. The Szewalski binary vapour cycle provides steam as the working fluid in a high temperature part of the cycle, while another fluid – organic working fluid – as the working substance substituting conventional steam over the temperature range represented by the low pressure steam expansion. In order to define in detail the efficiency of energy conversion at various stages of the proposed cycle the exergy analysis was performed. The steam cycle for reference conditions, the Szewalski binary vapour cycle as well as the Szewalski hierarchic vapour cycle cooperating with a system of waste heat recovery have been comprised.
Some spectral bounds for the harmonic matrix
Authors: Das Kinkar Ch. , Fonseca Carlos M. da
Published: May 2018

The aim of this note is to establish new spectral bounds for the harmonic matrix.
Horadam Octonions
Authors: Karataş Adnan , Halici Serpil
Published: May 2018

In this paper, first we define Horadam octonions by Horadam sequence which is a generalization of second order recurrence relations. Also, we give some fundamental properties involving the elements of that sequence. Then, we obtain their Binet-like formula, ordinary generating function and Cassini identity.
Some Equivalence Relations and Results over the Commutative Quaternions and Their Matrices
Authors: Kosal Hidayet Huda , Tosun Murat
Published: May 2018

In this paper, we give some equivalence relations and results over the commutative quaternions and their matrices. In this sense, consimilarity, semisimilarity, and consemisimilarity over the commutative quaternion algebra and commutative quaternion matrix algebra are established. Equalities of these equivalence relations are explicitly determined. Also Syvester-s-Conjugate commutative quaternion matrix equations are studied by means of real representation of the commutative quaternion matrices and consimilarity of the two commutative quaternion matrices.
Siacci's Theorem According to Darboux Frame
Authors: Ozen Kahraman Esen , Tosun Murat , Akyiğit Mahmut
Published: May 2018

The resolution of the acceleration vector of rigid body moving along a space curve is well known thanks to Siacci [1]. In this resolution, the acceleration vector is stated as the sum of two special oblique components in the osculating plane of the point of the curve. In this paper, we have studied the Siacci’s theorem for the curves on regular surfaces in 3-dimensional Euclidean space. Also, an example is given for a helix lying on a cylinder.
Mixed problem for quasilinear hyperbolic system with coefficients functionally dependent on solution
Authors: Zdanowicz Małgorzata , Peradzyński Zbigniew
Published: May 2018

The mixed problem for quasilinear hyperbolic system with coefficients functionally dependent on the solution is studied. We assume that the coefficients are continuous nonlinear operators in the Banach space C1(ℝ) satisfying some additional assumptions. Under these assumptions we prove the uniqueness and existence of local in time C1 solution, provided that the initial data are also of class C1.
8-Hydroxyqunoline adsorption from aqueous solution using powdered orange peel: kinetic and isotherm study
Authors: Siraj Khalid , Deso Dema , Jado Demelash , Selale Girma
Published: May 2018

Adsorption of 8-hydroxyquinoline (8HQ) on powdered orange peel (POP), a locally available adsorbent, has been studied. Experiment was performed on different 8HQ concentration, particle size, and adsorbent dosage. The Langmuir and Freundlich adsorption isotherm model has been tested. The obtained results best fitted the Langmuir model, suggesting monolayer adsorption of 8HQ on POP. The kinetic studies for the adsorption process were also carried out using pseudo-first- and pseudo-second-order models, and the data obtained is best fitted to the pseudo-second-order kinetic model. Thermodynamic parameters were calculated for the adsorption process and the result showed that the values of ΔGads, ΔHads, and ΔSads are −1171.4J/mol, −140J/mol and −40.5 J/K at 303 K. Thus, it can be summarized that the adsorption of 8HQ is spontaneous, chemisorbed, monolayer, and exothermic
Calvary of the Germans in Hungary at the end of WWII
Authors: Matkovits-Kretz Eleonóra
Published: May 2018

The German community in Hungary suffered many blows at the end of World War II and after it, on the basis of collective guilt. Immediately after the Red Army had marched in. gathering and deportation started into the camps of the Soviet Union, primarily into forced-labour camps in Donetsk, the Caucasus, and the Ural mountains. One third of them never returned. Those left behind had to face forced resettlement, the confiscation of their properties, and other ordeals. Their history was a taboo subject until the change of the political system in 1989. Not even until our days, by the 70th anniversary of the events, has their story reached a worthy place in national and international remembrance. International collaboration, the establishment of a research institute is needed to set to rights in history the story of the ordeal of the German community after World War II. for the present and future generations
The Activities of the Committee for the Preservation of Military Traditions from Turda (THHB)
Authors: Cech Vilmos , Józsa István Lajos , Kékkői Károly
Published: May 2018

The Institute of Military History of the Hungarian Ministry of Defence decided in 2000 to try to find the marked or unmarked graves of Hungarian soldiers killed in World War II. Joining this initiative, Jozsef Patakv founded the Committee for the Preservation of Military Traditions from Turda (THHB). Among other things, the aim of establishing the Committee was to discover the identity of the Hungarian soldiers that died in action in the fall of 1944 in Torda (in Romanian: Turda: in the followings, we will use the traditionally Hungarian name of the town: Torda) and its surroundings, find the location where they were buried, and erect a worthy monument to their memory. A Hungarian Soldier Graveyard was created within the Central Hungarian Cemetery of Torda, which has since become a place of pilgrimage. In addition, more then fifty sites of Hungarian soldiers’ graves were discovered and in most of the cases properly marked since that time. In 2012, Jozsef Patakv was awarded the Hungarian Gold Cross by the Ministry of Defence for his untiring work to discover the places of burial and identify Hungarian soldiers that died in WWII, and for worthily keeping their memories alive.
Does another Euclidean plane exist other than the parasphere?
Authors: Székely Endre
Published: May 2018

It is shown that for the question of the title the answer is yes. We construct a plane in the hyperbolic space which is Euclidean.
Uniqueness of polynomial and differential monomial
Authors: Waghamore Harina P. , Husna V.
Published: May 2018

In this paper, we discuss the problem of meromorphic functions sharing small function and present one theorem which extend a result of K. S. Charak and Banarasi Lal [16].
Fractal Analysis on Morphology of Laser Irradiated Vanadium Surfaces Under Different Ambient
Authors: Szkiva Zs. , Bálint Á. M. , Füle M. , Nánai L.
Published: May 2018

Pulsed laser irradiated vanadium surface morphology under different ambient has been prepared and characterized using fractal dimension analysis method on scanning electron microscopy (SEM) images. In presence of different ambient, self-periodic and self-similar surface patterns (e.g. dots, islands, and pins) were grown and appeared in different shapes. The fractal dimension (FD) of this developed vanadium nanostructure was calculated by fractal box count method (FBM). The calculated fractal dimension (FD, Df) shows dependence on the different type on ambient and the number of laser shots.
The
relationship between student athletes’ behaviour in the classroom and teachers’ burnout level
Authors: Karakaya Yunus Emre , Brusseau Timothy A , Karademir Tamer
Published: May 2018

Study aim: To examine the relationship between the behaviour of student athletes in the classroom in sport schools in Turkey and their teachers’ burnout level.

Material and methods: The sample of the study consisted of 226 teachers from sport high schools in Turkey. A questionnaire developed by Özdemir (2009) was used to ascertain students’ unwanted behaviour and the Maslach burnout inventory developed by Maslach and Jackson (1981) was used to assess the views of the research group. The data obtained were analysed through the SPSS 18.0 software.

Results: The research group complained of student behaviour including ‘speaking without permission’ during the course, ‘not having the necessary equipment for the course’, ‘not performing a given task’ and ‘not listening to the teacher’. A positive linear and moderate level relationship was found between the emotional burnout and depersonalization sub-dimensions. Suggesting that, as emotional burnout level increases so does the level of indifference. A positive and linear but low-level relationship was found between the emotional burnout and personal failure sub-dimensions. Suggesting that, as emotional burnout level increases so does personal failure. In addition, a positive and linear but low-level relationship was observed between the depersonalization and personal failure sub-dimensions. In other words, as the level of indifference increases so does personal failure. A significant difference was seen in the period of service variable of the depersonalization sub-dimension in the research group. Significant differences were observed in accordance with personal failure, period of service and fields of study.

Conclusions: Teachers should analyse their students in terms of academic and personal development in order to reduce negative behaviours in the classroom. Teachers should be able to help students in whatever field they need. Teachers in sports schools should receive support in adapting to the institutional culture of the schools.
Phytobenthos Cyanobacteria Species New To Lithuanian Rivers
Authors: Vitonytė Irma , Kasperovičienė Jūratė
Published: May 2018

A total of 23 new to Lithuania cyanobacteria species were recorded in phytobenthos of 70 rivers in 2009–2011. New species belong to the Chroococcales and Oscillatoriales orders, 10 families and 12 genera. Descriptions of species morphology and original photos are presented; cyanobacteria’s ecological groups and distributions are analysed. The paper contains information about the possibility of employment of new species as indicators for the assessment of ecological status of Lithuanian rivers.
Notes On Alien Plant Species Amorpha Fruticosa New To Lithuania
Authors: Gudžinskas Zigmantas , Žalneravičius Egidijus
Published: May 2018

Woody plant species in recent decades have increasingly often been recorded escaped from cultivation and naturalized. In 2013, a new alien woody species Amorpha fruticosa L. (Fabaceae) was first found in Lithuania. In several Central European countries, A. fruticosa is recognized as invasive species that pose serious threat to natural habitats and ecosystems. To date, A. fruticosa has been registered in three localities in Lithuania: two populations in Ukmergė district and one population in Prienai district. Considering the present state of revealed A. fruticosa populations, it is concluded that this species in Lithuania is already naturalized and potentially invasive. Estimated total area occupied by A. fruticosa in three known localities is about 0.2 ha. In certain areas this species can become abundant and invade significant areas of meadow, forest-edge and other open habitats. Therefore, its immediate control and subsequent eradication can reduce risk of future invasion. Cultivation of A. fruticosa should be forbidden outside the ornamental plantations.
Local Feature Extraction in the Near Infra-Red Domain for Wildlife Mammals Tracking Purpose
Authors: Trnovszký Tibor , Hudec Róbert
Published: May 2018

Nowadays, research in area of intelligent transportation system is focused on analysis of traffic flow by computer vision techniques. Keypoint analysis represents detection, modelling and recognition of objects in traffic flow and object tracking as well. The main goal of this paper is to propose new approach to detect and modelling 3D objects that move on road surface. At the beginning, basic methods of object recognition and modelling of 3D object are shortly described. The modified algorithm based on background subtraction and creation of 3D model by depth map is proposed. Finally, the results of developed algorithm are depicted through the last part of this paper.
Advances in surgery for peritoneal surface malignancies
Authors: Mielko Jerzy , Rawicz-Pruszynski Karol , Jastrzebski Tomasz , Polkowski Wojciech P.
Published: May 2018

Currently, patients with isolated peritoneal surface malignancies are treated with a combination of cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC). This combination should now be considered the standard of care for appendiceal cancers (including pseudomyxoma), colorectal cancer and peritoneal mesothelioma, while patients with peritoneal metastases from ovarian or gastric cancer may be treated within clinical trials. At present, 8 clinical centres in Poland perform CRS and HIPEC. The unanswered problems of combined intraperitoneal therapy were an impulse for the organization of the 4th International Conference “Advances in Surgical Oncology” that was held on November 23-24, 2017, in Lublin (Poland), and the Polish chapter of the Peritoneal Surface Oncology Group International (PSOGI) was established as a result of this meeting. This special issue of the Current Issues in Pharmacy and Medical Sciences is dedicated to the current therapeutic difficulties discussed during the two days of the conference – experiences that were exchanged to set in motion further directions for the improvement of intraperitoneal treatment.
Risk of peritoneal dissemination in stomach cancer
Authors: Sitarz Robert , Polkowski Wojciech P , Maciejewski Ryszard , Offerhaus G Johan A
Published: May 2018

With regard to gastric cancer, an important disease and a public health problem, it is expected that understanding the molecular make up of carcinomas will provide us with more precise targets for therapy. Indeed advanced molecular technology has made it possible to classify according to genotype instead of phenotype. For advanced stomach cancer, however, surgery is still the only option for cure. Yet, also after surgery, more than 50% of the patients will die of peritoneal dissemination of their disease. This review looks at the molecular mechanism of peritoneal spread of stomach cancer in order to arrive at a risk profile that enables medical personnel to raise the index of suspicion for peritoneal carcinomatosis. The peritoneal cancer index (PCI) provides a scoring system to measure the extent of peritoneal spread during laparoscopic staging. A recently developed device called the ‘MacSpec pen’ maybe of use to confirm the presence of tumor when there is doubt about the diagnosis. Treatment of peritoneal dissemination consists of cytoreduction, combined with hyperthermic peritoneal chemotherapy (HIPEC).
Which patient is going to benefit from surgical cytoreduction with intraperitoneal chemotherapy (for manifest peritoneal metastases)?
Authors: Blaj Sebastian , Piso Pompiliu
Published: May 2018

The gastric cancer with peritoneal metastases still represents a serious problem in the oncological surgery, whereas the peritoneal metastases arising from colorectal cancer can be successfully treated using a multimodal therapy concept consisting of systemic chemotherapy, cytoreductive surgery and hyperthermic intraperitoneal chemotherapy. The best survival rates in patients suffering from peritoneal metastases of gastric cancer have been reported by the ToGa trial, in patients with HER-2 positive expression who received standard chemotherapy and trastuzumab. Cytoreductive surgery and HIPEC are increasingly wining a place in the multimodal therapy of gastric cancer with peritoneal metastases, the criteria for such an aggressive therapy are strict and the operability needs to be previously assessed by laparoscopic exploration. Interesting new data are awaited from the German GASTRIPEC study and from the French GASTRICHIP study.
Orientations towards English among English-medium Instruction Students
Authors: Karakaş Ali
Published: May 2018

Based on the empirical data of my PhD research, this paper analyses the perceptions of 351 undergraduate students enrolled at English-medium universities towards English in terms of the language ideology framework. The students were purposively sampled from three programs at three Turkish universities. The data were drawn from student opinion surveys and semi-structured interviews. The findings paint a blurry picture, with a strong tendency among most students to view their English use as having the characteristics of dominant native varieties of English (American English & British English), and with a high percentage of students’ acceptance of the distinctiveness of their English without referring to any standard variety. The findings also show that many students’ orientations to English are formed by two dominant language ideologies: standard English ideology and native speaker English ideology. It was also found that a large number of students did not strictly stick to either of these ideologies, particularly in their orientation to spoken English, due, as argued in the main body, to their experiences on language use that have made them aware of the demographics of diverse English users and of the diverse ways of using English.
The ex vitro rooting of blueberry (Vaccinium corymbosum L.) microcuttings
Authors: Pacholczak Andrzej , Nowakowska Karolina
Published: May 2018

A growing demand for blueberry fruit has necessitated the development of an efficient propagation method of this species that would provide large quantities of planting material. The aim of this study was to evaluate the effects of auxin indole-3-butyric acid (IBA 50 mg dm−3), the commercial rooting powder Rhizopon containing 1% IBA, and salicylic acid (50 mg dm−3) on the in vivo rooting of microcuttings of Vaccinium corymbosum ‘Bluecrop’ and ‘Duke’. The contents of chlorophyll a + b, soluble proteins, free amino acids, as well as total soluble and reducing sugars were determined in rooted cuttings. All of the treatments increased the degree and percentage of rooting in the cuttings of both cultivars. While improving rhizogenesis in blueberry, salicylic acid did not perform as a cofactor of the auxin IBA. Foliar applications of IBA or salicylic acid (SA) increased the contents of soluble proteins, free amino acids and sugars, but no effects on chlorophyll levels were observed.
Exchange traded commodities as a category of innovative products on European financial markets
Authors: Marszk Adam
Published: May 2018

The article presents the main features of one category of innovative financial products – exchange traded commodities (ETCs) and results of the analysis of the European market for ETCs. ETCs are products listed and traded on the stock exchanges and they offer investors returns based on various assets (commodities or currencies). In contrast with the most widely recognized exchange traded funds (ETFs), ETCs are structured as debt instruments due to legal requirements regarding investment funds in the European Union. The European ETCs market is the largest in the world (in terms of assets its share in the global market in 2015 was close to 98%). It had developed rapidly until 2012 when total assets reached the record-high value of ca. 26,6 billion EUR (i.e. 9,5% of total assets of all exchange traded products listed in Europe). Over the next few years both the value of assets and market share of ETCs decreased significantly, mostly due to decline of the tracked assets’ prices (especially commodities) – during the analyzed time period the average flows to commodity or currency ETCs were close to 0. An important feature of the European market is its high concentration level, both in terms of companies launching ETCs and locations of the trade in the share of ETCs. Four ETC providers manage most of the assets (with the cumulated market share of over 94%). Three exchanges –in London, Milan and Frankfurt am Main account for almost the entire regulated market turnover of ETCs in Europe.
The role of biogeochemical barriers in protecting aquatic ecosystems against pollution in agricultural environment
Authors: Łaskawiec Edyta
Published: May 2018

This review discusses the importance of ecotones with high plant diversity which are highly effective in retaining pollutants and waste. Biogeochemical barriers play a vital role in eliminating biogenic pollutants, pesticides and heavy metals. Belts of rush plants and meadow vegetation considerably expand the accumulation capacity of water bodies and watercourses. The mechanisms responsible for the protective role of biogeochemical barriers involve various processes such as sorption, sedimentation, denitrification and assimilation, which require the coexistence of plants and microorganisms in aquatic ecosystems. Buffer barriers were presented as one of the ecohydrology tools in agricultural landscapes.
Non-Statistical Methods of Analysing of Bankruptcy Risk
Authors: Pisula Tomasz , Mentel Grzegorz , Brożyna Jacek
Published: May 2018

The article focuses on assessing the effectiveness of a non-statistical approach to bankruptcy modelling in enterprises operating in the logistics sector. In order to describe the issue more comprehensively, the aforementioned prediction of the possible negative results of business operations was carried out for companies functioning in the Polish region of Podkarpacie, and in Slovakia. The bankruptcy predictors selected for the assessment of companies operating in the logistics sector included 28 financial indicators characterizing these enterprises in terms of their financial standing and management effectiveness. The purpose of the study was to identify factors (models) describing the bankruptcy risk in enterprises in the context of their forecasting effectiveness in a one-year and two-year time horizon. In order to assess their practical applicability the models were carefully analysed and validated. The usefulness of the models was assessed in terms of their classification properties, and the capacity to accurately identify enterprises at risk of bankruptcy and healthy companies as well as proper calibration of the models to the data from training sample sets.
Preliminary studies on the molecular identification of sex in Taxus baccata L.
Authors: Zarek Marcin
Published: May 2018

The scientific objective of this research was to screen random amplified polymorphic DNA (RAPD) and intersimple sequence repeat (ISSR) primers in order to find the molecular markers enabling the distinction between male and female individuals of the European yew. This is an initial step toward understanding the mechanisms of sex determination in this species.

The study was conducted on European yew originating from two sites in Poland: the Zadni Gaj nature reserve near Cieszyn and the yew collection from the Botanical Garden of the Jagiellonian University in Krakow.

In the present study, 716 random primers (696 RAPD primers: OPA-OPAI_1-16 and 20 ISSR primers marked as UBC) were tested to identify the sex in European yew by means of a modified bulked segregant analysis (BSA) method. The work was conducted in three stages, gradually limiting the number of primers through the elimination of primers that either did not exhibit any differences between the examined groups or did not provide amplification products.

Among the tested primers, no ideal markers that would be present in all individuals of one sex but absent in the individuals of the other sex were found. However, some markers were found (A07_954, H13_729, J08_660, L12_390, U01_457, V14_527, AE03_941, AE03_1014) to occur with greater frequency in one sex. Using these, we further examined 13 band combinations (profiles) that were observed to occur only in male individuals and another 13 combinations that were observed only in female individuals, which could be used in the practical identification of sex.

This is the first report to ascertain the sex of Taxus baccata trees, and it may help to determine the sex at an early stage of development.
Gemstone deposits of Serbia
Authors: Miladinović Zoran , Simić Vladimir , Jelenković Rade , Ilić Miloje
Published: May 2018

Gemstone minerals in Serbia have never been regarded as an interesting and significant resource. Nevertheless, more than 150 deposits and occurrences have been recorded and some of them preliminarily explored in the last 50 years. The majority of deposits and occurrences are located within the Serbo-Macedonian metallogenic province and the most significant metallogenic units at the existing level of knowledge are the Fruska Gora ore district, Cer ore district, Sumadija metallogenic zone, Kopaonik metallogenic zone and Lece-Halkidiki metallogenic zone. The most important genetic type of deposits is hydrothermal, particularly in case of serpentinite/peridotite as host/parent rock. Placer deposits are also economically important. The dominant gemstones are silica minerals: chalcedony (Chrysoprase, carnelian, bluish chalcedony etc.), jasper (picture, landscape, red etc.), common opal (dendritic, green, milky white etc.), silica masses (undivided), and quartz (rock crystal, amethyst etc.). Beside silica minerals significant gemstones in Serbia include also beryl (aquamarine), garnet (almandine and pyrope), tourmaline, fluorite, rhodochrosite, carbonate-silica breccia, carbonate-silica onyx, silicified wood, howlite, serpentinite, marble onyx, and kyanite. This paper aims to present an overview of Serbian gemstone deposits and occurrences and their position based on a simplified gemstone metallogenic map of Serbia, as well as genetic-industrial classification of gemstone deposits and gemstone varieties.
Calcareous nannofossils of the Jurassic/Cretaceous boundary strata in the Puerto Escano section (southern Spain) — biostratigraphy and palaeoecology
Authors: Svobodová Andrea , Kośák Martin
Published: May 2018

We obtained material from the Puerto Escano section (southern Spain) to study the Jurassic/Cretaceous (J/K) boundary interval. The same samples had already been processed for magnetostratigraphic studies and biostratigraphic zonation based on calpionellids and ammonites (Pruner et al. 2010), but not for calcareous nannofossils. The aim of this study was to process the samples using micropalaeontological analysis and to compare and calibrate results for calcareous nannofossils with existing magnetostratigraphic and other biostratigraphic data. The calcareous nannofossil assemblage was dominated by the genera Watznaueria, Cyclagelosphaera, Nannoconus, Conusphaera and Polycostella. Several nannofossil bioevents were recorded on the basis of the distribution of stratigraphically important taxa, including zonal and subzonal markers. Based on the lowest occurrences (LO) of M. chiastius, N. globulus minor, N. wintereri, N steinmanii minor, N. steinmannii steinmannii, N. kamptneri minor and N. kampteri kamptneri, two nannofossil subzones (NJT 15b, NJT 17a) and two nannofossil zones (NJT 16, NK-1) were recognized. The paper introduces new palaeoecological data based on geochemical analysis and macrofauna occurrences.
Age and provenance of mica-schist pebbles from the Eocene conglomerates of the Tylicz and Krynica Zone (Magura Nappe, Outer Flysch Carpathians)
Authors: Oszczypko Nestor , Salata Dorota , Konečný Patrik
Published: May 2018

During the Łate Cretaceous to Palaeogene, the Magura Basin was supplied by clastic material from source areas situated on the northern and southern margins of the basin, which do not outcrop on the surface at present. The northern source area is traditionally connected with the Silesian Ridge, whereas the position of the southern one is still under discussion. A source area situated SE of the Magura Basin supplied the Eocene pebbly para-conglomerates containing partly exotic material. The studied clastic material contains fragments of crystalline rocks, and frequent clasts of Mesozoic to Palaeogene deep and shallow-water limestones. Numerous mica schists, scarce volcanites and granitoids as well as gneisses, quartzites and cataclasites were found in the group of crystalline exotic pebbles. Monazite ages of “exotic” mica-schist pebbles from the Tylicz, Zarzecze and Piwniczna-Mniszek sections document the Variscan 310±10 Ma age of metamorphic processes. The provenance of these exotic rocks could be connected with a remote source area located SE of the Magura Basin, which could be the NW part of the Dacia Mega Unit. The idea is strongly supported by palaeotransport directions from the SE, the absence of material derived from the Pieniny Klippen Belt, the presence of shallow water limestones, typical facies of the Median Dacides belt and metamorphic age distribution proved by monazite dating.
Hydrogeochemical Aspects Associated with the Mixing of Formation Waters Injected Into the Hydrocarbon Reservoir
Authors: Uliasz-Misiak Barbara , Chruszcz-Lipska Katarzyna
Published: May 2018

Formation waters extracted with crude oil and natural gas, due to their amount and chemical composition can be a problem for petroleum companies operating hydrocarbon deposits. On average, the world generates 2 to 3 times more water than oil. On average, the world generates 2 to 3 times more water than crude oil. T he amount of extracted water increases with the time of exploitation of the deposit, in the case of deposits at the final stage of depletion, the amount of extracted water is 5 to 8 times bigger than petroleum. Formation waters from hydrocarbons deposits are usually the highly mineralized brines. Large quantities of highly mineralized waters extracted with crude oil and gas are disposed of in various ways or neutralized. T he most common way of disposing of these waters is by injecting them into rock mass. As a result of injection of reservoir waters into hydrocarbon deposits, the waters interact with the storage formations. In these formations, there may be numerous reactions of mineral water with the rock environment. T he injection of reservoir waters will also cause mixing of waters that can disturb the state of thermodynamic equilibrium and will alter the chemistry of these waters. It was analyzed by the geochemical modeling of the interaction of the reservoir waters of Przemyśl natural gas field. Using the PHREEQC program, the chemical reactions related to the mixing of reservoir waters of different chemical types have been studied. It has been found that is possible to precipitation appropriated minerals as a result of mixing water with different chemical composition.
Documentation Of Landslides And Inaccessible Parts Of A Mine Using An Unmanned UAV System And Methods Of Digital Terrestrial Photogrammetry
Authors: Vrublová Dana , Kapica Roman , Jiránková Eva , Struś Adam
Published: May 2018

Quite a big boom has recently been experienced in the technology of unmanned aerial vehicles (UAV). In conjunction with dense matching system, it gives one a powerful tool for the creation of digital terrain models and orthophotomaps. This system was used for the documentation of landslides and inaccessible parts of the Nástup Tušimice mine in the North Bohemian Brown Coal Basin (Czech Republic). The images were taken by the GATEWING X100 unmanned system that automatically executed photo flights an area of interest. For detailed documentation of selected parts of the mine, we used the method of digital terrestrial photogrammetry. The main objective was to find a suitable measurement technology for operational targeting of landslides and inaccessible parts of the mine, in order to prepare the basics for remediation work.
The Drabo corymbosae-Papaveretea dahliani − a new vegetation class of the High Arctic polar deserts
Authors: Daniëls Fred J. A. , Elvebakk Arve , Matveyeva Nadezhda V. , Mucina Ladislav
Published: May 2018

A new class and a new order (Drabo corymbosae-Papaveretea dahliani and Saxifrago oppositifoliae-Papaveretalia dahliani) have been described, and the Papaverion dahliani validated. This is vegetation of zonal habitats in lowlands of the High Arctic subzone A (or Arctic herb, cushion forb or polar desert subzone) and of ecologically equivalent sites at high altitudes on the mountain plateaus of the High Arctic. The new class spans three continents – North America (Canadian Arctic Archipelago and Greenland), Europe (parts of Svalbard and Franz Josef Land), and Asia, including northern regions of Chelyuskin Peninsula (Taymir Peninsula), Severnaya Zemlya Archipelago and De Longa Islands.
A phytosociological analysis of the Quercus coccifera L. stands in south Albania (NE Mediterranean)
Authors: Jasprica Nenad , Škvorc Željko , Milović Milenko
Published: May 2018

The results of a phytosociological investigation of the Quercus coccifera L. stands occurring along the Adriatic and Ionian coasts in south Albania are given. The surveyed stands are localized in the Thermo-Mediterranean and Meso-Mediterranean belts. On the basis of literature and unpublished data, Q. coccifera stands extend from the shoreline up to 680 m of altitude, within the Quercetea ilicis vegetation zone. According to numerical analysis, Q. coccifera stands in south Albania can be divided into two broad groups forming macchia of 3–4 m height and low shrublands [0.5–1.5(-2) m)] defined primarily by degree of human pressure and altitudes. In addition, relevés from Q. coccifera stands in Albania were differentiated from Croatian and Montenegrin the Fraxino orni-Quercetum cocciferae associations. Conversely, Q. coccifera stands in south Albania share several biological and ecological similarities with those of the eastern Adriatic coast: hemicryptophytes prevailed and the chorological spectrum highlights a clear dominance of the steno-Mediterraneans. With respect to indicator values, an important differentiation from the eastern Adriatic associations was shown only in higher light intensity of the stands in Albania.
Two new pioneer communities of Sorbus aucuparia and Sorbus aria in the southern Julian Alps
Authors: Dakskobler Igor
Published: May 2018

In the southern Julian Alps we described two communities whose tree layer is dominated by species from the genus Sorbus and noted two successional stages in the overgrowing of abandoned agricultural land (pastures, hay meadows). In the secondary succession on former subalpine pastures above the alp Planina Razor und under the Breginjski Stol ridge, where potential natural vegetation consists of subalpine beech forest, dwarf pine has been overgrown with mountain ash (Sorbus aucuparia) whose stands are classified into the new association Rhododendro hirsuti-Sorbetum aucupariae. Whitebeam (Sorbus aria) has established itself on steep former hay meadows in the belt of altimontane beech forests under Mts. Jalovnik and Krikov Vrh, on gullied slopes on mixed geological bedrock dominated by chert, and these stands are classified into the association Calamagrostio arundinaceae-Sorbetum ariae. While occupying only small areas these two pioneer stages, as the sites of some rare or protected species, are nevertheless important biotopes and play a vital role in protection against avalanches.
Changes in Endurance Performance in Young Athletes During Two Training Seasons
Authors: Tota Łukasz , Maciejczyk Marcin , Pokora Ilona , Cempla Jerzy , Pilch Wanda , Pałka Tomasz
Published: May 2018

The aim of the study was to assess changes in endurance performance in young runners (females and males) during two training seasons. It involved 19 male and 16 female athletes aged 15-17 specializing in track-and-field middle and long distances runs. The following parameters were measured three times during the training season: maximal oxygen uptake, running economy, and the level of the second ventilatory threshold. Training volume and intensity during each season were analyzed within an 8-week period prior to the exercise tests. The volume and intensity of training at various stages of preparation in both seasons were similar. During the first year of observation, significant improvements in relative volume of maximal oxygen uptake were reported both in female and male athletes. During the second training season, it was found that running economy improved both in women and men, with no changes in maximal oxygen uptake. The same (in terms of volume and intensity) endurance training carried out with young runners during two consecutive training seasons can result in different training effects.
Emotional Intelligence – Sales Performance Relationship: A Mediating Role of Adaptive Selling Behaviour
Authors: Wisker Zazli Lily , Poulis Athanasios
Published: May 2018

In this study, we examined the impact of emotional intelligence on sales performance. We posited that the impact of emotional intelligence (EI) on sales performance was mediated by adaptive selling behaviour (ASB). Data were collected from 281 sales people in the financial industries in Malaysia via the WLEIS emotional intelligence scale and ADAPTS adaptive selling behaviour scale, and were quantitatively analysed using structural equation modelling (SEM). Results were in keeping with the model. Three domains of EI were not found to impact sales performance directly but through ASB. Theoretical implications and managerial ramifications were also discussed.
CSR and Financial Performance: The Case of Polish Small and Medium Manufacturers
Authors: Zaborek Piotr
Published: May 2018

The paper explores the hypothesized link between involvement in social responsibility and financial performance. In particular, it looks at this relationship among Polish small and medium manufacturing companies that operate in food, beverage and cosmetics industries. The statistical analysis involves developing and testing structural model on the basis of data from a survey of 187 managers supplemented by validated financial metrics from an external database. The outcomes suggests the existence of a weak but statistically significant positive correlation between the CSR involvement construct and sales profit margin (β=0.2). However, CSR seems to have no discernible direct effect on ROA. The study, as the first project of this kind in Poland, adds to the sparse body of literature on financial outcomes of CSR in small and medium enterprises from emerging economies. Another distinguishing feature of this research is its methodological approach which compares favorably to many previous studies in terms of robustness.
A Comparison of Different Short-Term Macroeconomic Forecasting Models: Evidence from Armenia
Authors: Poghosyan Karen
Published: May 2018

We evaluate the forecasting performance of four competing models for short-term macroeconomic forecasting: the traditional VAR, small scale Bayesian VAR, Factor Augmented VAR and Bayesian Factor Augmented VAR models. Using Armenian quarterly actual macroeconomic time series from 1996Q1 – 2014Q4, we estimate parameters of four competing models. Based on the out-of-sample recursive forecast evaluations and using root mean squared error (RMSE) criterion we conclude that small scale Bayesian VAR and Bayesian Factor Augmented VAR models are more suitable for short-term forecasting than traditional unrestricted VAR model.
Theory of Near–Zone Measurement with Transformation to Aerial Surface and Gain Measurement
Authors: Ivanka Ján , Chudá Hana
Published: May 2018

The paper presents an analysis study of the theory of measurement in the near, Fresnel and Fraunhofer zone with transformation to aerial surface as well as real measurements of the gain of aerial system of electromagnetic fields of devices and components used in the safety industry in an aneochoic chamber.
Considerantions on suspension of the individual labor contract
Authors: Mara Teodor
Published: May 2018

The article examines the concept of suspension of the individual labor contract of Law no. 53/2003 (Labor Code) as amended and supplemented by June 2015 and the effects of suspension according to legal provisions in force.
The Valve Gear Systems Timing Parameters Identification for Marine Diesel Engines Diagnostics / Identyfikacja Parametrów Układów Rozrządu Silników Okrętowych Dla Potrzeb Diagnostyki
Authors: Lus Tomasz
Published: May 2018

In the paper results of studies that aim was to develop a diagnostic method for high-speed marine diesel engines are presented. Polish Navy is operating significant number of engines of this type also on board of submarines. Engines of this type do not have indicator valves, which complicates the assessment of combustion process and their technical condition. Polish Naval Academy in Gdynia for years has been developing methods of diagnosing marine internal combustion engines. In recent years, a diagnostic method for high-speed marine diesel engines based on the analysis of envelope of vibration accelerations generated by the valve gear mechanism and fuel system has been developed. Some tests results made on Mercedes-Maybach MB820 engines used on Kobben class submarines are presented in the paper.
Socio-economic changes in the borderlands of the Visegrad Group (V4) countries
Authors: Máliková Lucia , Klobučník Michal , Bačík Vladimír , Spišiak Peter
Published: May 2018

Under the influence of globalization and state integration processes, the importance of a border as a barrier is gradually decreasing. Borderlands are still perceived as specific phenomena, however, not only in terms of historical development but especially in the context of their changing impact on the daily lives of their inhabitants. Along with EU enlargement, the de-bordering process has also become significant in many countries where the borderland played an important role in the past. These include the V4 countries, whose borderlands are the object of this research. In this article we analyze these areas on the basis of selected socio-economic indicators, with a focus on change in the period 2001–2011. As indicated by the Analysis of Variance, the results show the significantly differentiated development of the borderlands, in terms of the individual values of indicators both within the borderland of the EU member states, as well as along the external border of the EU.
Fine and ultrafine TiO2 particles in aerosol in Kraków (Poland)
Authors: Wilczyńska-Michalik Wanda , Rzeźnikiewicz Kamil , Pietras Bartłomiej , Michalik Marek
Published: May 2018

During single particle analysis of aerosol in Kraków (Poland) we noticed a new component, that is, aggregates of TiO2 particles. These aggregates are from 0.5 to 4 μm and are composed of individual particles whose size typically varies from between 100 and 350 nm. Smaller particles (below 100 nm) also occur. TiO2 particles are relatively abundant in the summer. The size distribution of the particles corresponds to “pigmentary” TiO2, which indicates that they could be derived from paints and building materials. TiO2 particles were not previously identified in aerosol samples in Kraków, and therefore this phenomenon is likely to be related to the common usage of new building materials and paints. A review of the literature suggests that TiO2 particles, especially within the nanosize range, could result in health and environmental impacts; however, evaluation of the actual threat is difficult.
Study Concerning Characterization of Some Recycled Concrete Aggregates
Authors: Robu Ion , Mazilu Claudiu , Deju Radu
Published: May 2018

Using recycled concrete aggregates (RCA) is a matter of high priority in the construction industry worldwide. In countries like the Netherlands, Denmark, Germany, USA, Japan, France recycled concrete aggregates obtained from demolition are valorized up to 90%, mainly for road construction and less in the manufacture of new concrete.

Recycled concrete aggregates (RCA) generally result from a two-stage crushing of the concrete obtained from demolition followed by the screening and removal of contaminants (wood, plastic, metal, ceramics etc.). The literature review showed that the recycled aggregates concrete (RAC) are less resistant, with 15 to 40% versus concrete obtained using natural aggregates. The factors that play a role in the reducing of mechanical resistance are presented and analyzed in this study.

This paper presents a study on the use of recycled aggregates, from a concrete of specified class, to acquire new cement concrete with different percentages of recycled aggregates. In order to evaluate the influence upon the properties of the new concrete obtained, recycled aggregates have been characterized in terms of the granulosity, the granule shape, the absorption of water, behavior to the Los Angeles test, the content of attached mortar etc.
Keep calm and carry on: A crisis communication study of Cadbury and McDonalds
Authors: Telang Achyut , Deshpande Amruta
Published: May 2018

Many organizations, at some point or another, have to face a crisis situation. In that scenario, the way in which the organization communicates makes or breaks the organization’s success in dealing with the crisis. Especially after the emergence of the social media, the impact of crisis communication on the process of successful crisis management has become even greater than before. Organizations have to take the initiative, to be proactive and create a plan for crisis communication. This paper is focused on the comparative study of the communication approaches followed by Cadbury and McDonalds during a period when the companies were dealing with a crisis. The findings of the content analysis show that a company should respond to the crisis as quickly as possible to avoid loss in terms of sales. The initial statement of the companies during a crisis should be clear, positive and through the right channel to help the company regain its reputation on the market. Advertising is the best way to convey the message across the world because the crisis situation that has come up in one market can soon catch-up in the other markets where the company operates. The company has to connect with the consumers on emotional grounds because the crisis breaks down the faith of the consumers in the company. The recovery actions that support the statements also play an important role during the crisis situation. By following the above-mentioned communication strategies, organizations can achieve damage control as well as turn the crisis into an opportunity to grow.