bluuebunny/crossref_metadata_2025_split huggingface dataset:
Thermal analysis of heat and power plant with high temperature reactor and intermediate steam cycle
Authors: Fic Adam , Składzień Jan , Gabriel Michał 
Published: October 2015

Abstract
Thermal analysis of a heat and power plant with a high temperature gas cooled nuclear reactor is presented. The main aim of the considered system is to supply a technological process with the heat at suitably high temperature level. The considered unit is also used to produce electricity. The high temperature helium cooled nuclear reactor is the primary heat source in the system, which consists of: the reactor cooling cycle, the steam cycle and the gas heat pump cycle. Helium used as a carrier in the first cycle (classic Brayton cycle), which includes the reactor, delivers heat in a steam generator to produce superheated steam with required parameters of the intermediate cycle. The intermediate cycle is provided to transport energy from the reactor installation to the process installation requiring a high temperature heat. The distance between reactor and the process installation is assumed short and negligable, or alternatively equal to 1 km in the analysis. The system is also equipped with a high temperature argon heat pump to obtain the temperature level of a heat carrier required by a high temperature process. Thus, the steam of the intermediate cycle supplies a lower heat exchanger of the heat pump, a process heat exchanger at the medium temperature level and a classical steam turbine system (Rankine cycle). The main purpose of the research was to evaluate the effectiveness of the system considered and to assess whether such a three cycle cogeneration system is reasonable. Multivariant calculations have been carried out employing the developed mathematical model. The results have been presented in a form of the energy efficiency and exergy efficiency of the system as a function of the temperature drop in the high temperature process heat exchanger and the reactor pressure.
Numerical modeling and preliminary validation of drag-based vertical axis wind turbine
Authors: Krysiński Tomasz , Buliński Zbigniew , Nowak Andrzej J. 
Published: October 2015

Abstract
The main purpose of this article is to verify and validate the mathematical description of the airflow around a wind turbine with vertical axis of rotation, which could be considered as representative for this type of devices. Mathematical modeling of the airflow around wind turbines in particular those with the vertical axis is a problematic matter due to the complex nature of this highly swirled flow. Moreover, it is turbulent flow accompanied by a rotation of the rotor and the dynamic boundary layer separation. In such conditions, the key aspects of the mathematical model are accurate turbulence description, definition of circular motion as well as accompanying effects like centrifugal force or the Coriolis force and parameters of spatial and temporal discretization. The paper presents the impact of the different simulation parameters on the obtained results of the wind turbine simulation. Analysed models have been validated against experimental data published in the literature.
Application of the method of data reconciliation for minimizing uncertainty of the weight function in the multicriteria optimization model
Authors: Mendecka Barbara , Kozioł Joachim 
Published: October 2015

Abstract
The multicriteria decision process consists of five main steps: definition of the optimisation problem, determination of the weight structure of the decision criteria, design of the evaluation matrix, selection of the optimal evaluation method and ranking of solutions. It is often difficult to obtain the optimal solution to a multicriterion problem. The main reason is the subjective element of the model – the weight functions of the decision criteria. Expert opinions are usually taken into account in their determination. The aim of this article is to present a novel method of minimizing the uncertainty of the weights of the decision criteria using Monte Carlo simulation and method of data reconciliation. The proposed method is illustrated by the example of multicriterion social effectiveness evaluation for electric power supply to a building using renewable energy sources.
Computer modeling of a convective steam superheater
Authors: Trojan Marcin 
Published: October 2015

Abstract
Superheater is for generating superheated steam from the saturated steam from the evaporator outlet. In the case of pulverized coal fired boiler, a relatively small amount of ash causes problems with ash fouling on the heating surfaces, including the superheaters. In the convection pass of the boiler, the flue gas temperature is lower and ash deposits can be loose or sintered. Ash fouling not only reduces heat transfer from the flue gas to the steam, but also is the cause of a higher pressure drop on the flue gas flow path. In the case the pressure drop is greater than the power consumed by the fan increases. If the superheater surfaces are covered with ash than the steam temperature at the outlet of the superheater stages falls, and the flow rates of the water injected into attemperator should be reduced. There is also an increase in flue gas temperature after the different stages of the superheater. Consequently, this leads to a reduction in boiler efficiency. The paper presents the results of computational fluid dynamics simulations of the first stage superheater of both the boiler OP-210M using the commercial software. The temperature distributions of the steam and flue gas along the way they flow together with temperature of the tube walls and temperature of the ash deposits will be determined. The calculated steam temperature is compared with measurement results. Knowledge of these temperatures is of great practical importance because it allows to choose the grade of steel for a given superheater stage. Using the developed model of the superheater to determine its degree of ash fouling in the on-line mode one can control the activation frequency of steam sootblowers.
Convective heat transfer for fluids passing through aluminum foams
Authors: Dyga Roman , Troniewski Leon 
Published: October 2015

Abstract
This paper analyses the experimental findings within heat transfer when heating up air, water and oil streams which are passed through a duct with internal structural packing elements in the form of metal foams. Three types of aluminum foams with different cell sizes, porosity specifications and thermal conductivities were used in the study. The test data were collected and they made it possible to establish the effect of the foam geometry, properties of fluids and flow hydrodynamic conditions on the convective heat transfer process from the heating surface to the fluid flowing by (wetting) that surface. The foam was found to be involved in heat transfer to a limited extent only. Heat is predominantly transferred directly from the duct wall to a fluid, and intensity of convective heat transfer is controlled by the wall effects. The influence of foam structural parameters, like cell size and/or porosity, becomes more clearly apparent under laminar flow conditions.
Challenges To The Implementation Of Institutional Reform In The Lithuanian General Education System
Authors: Pranevičienė Birutė , Margevičiūtė Agnė 
Published: October 2015

Abstract
The educational system of Lithuania has undergone transformation conditioned by the radical change of the political situation in the region after the restoration of independence on March 11, 1990. The new educational system was gradually developed, changing and denying the former Soviet educational framework. The main goal of the new educational system is to provide education compatible with the newly applicable international standards and create an effective network of schools. The article aims to present an overview of the reform of the institutional system of general education of Lithuania that began in 1988 and was to be completed in September 2015; however, the completion of the reform was recently postponed until September 2017. The article also reviews key challenges to the reform implementation and discusses the compatibility of the reform with societal expectations and standards of international educational law.
The Role Of Ethics In Legal Education Of Post-Soviet Countries
Authors: Kelley Christopher R. , Kiršienė Julija 
Published: October 2015

Abstract
The neglect of lawyer ethics in legal education, including in continuing legal education for lawyers and judges, is an enduring Soviet legacy in post-Soviet countries. Partially because of this neglect, many people in post-soviet countries do not trust lawyers. Their mistrust often is for good reason—too many lawyers are unethical. Yet, unethical lawyers do more than alienate others and cast the legal profession in disrepute. Unethical lawyers waste resources by unnecessarily prolonging disputes and inflaming antagonisms by provoking unjustifiable confrontations. Worse, they corrupt the legal system by bribing judges, suborning perjury, and using other illegal means to achieve their ends. Thus, they contribute to an all-too-common failure in post-Soviet countries—the failure to achieve the rule of law.
The academic literature is replete with commentary about the place of ethics in legal education. Some argue that ethics instruction is unnecessary. They claim that allusions to ethics in other courses, the law school culture, and the ethics learned earlier in life is sufficient. Others posit that ethics are too important to omit from the law school curriculum. They often add, however, that legal ethics instruction in law school commonly involves little more than demanding that law students memorize rules or codes of conduct.
This article discusses whether the ethics education of future lawyers in post-Soviet countries is adequate. Concluding that it is not, this article proposes suggestions for the content of an Eastern European legal ethics course and methods for teaching law students to internalize ethical norms as a part of their legal education.
Selected biochemical and oxidative stress parameters and ceruloplasmin as acute phase protein associated with bovine leukaemia virus infection in dairy cows
Authors: Akalın Pınar Peker , Ataseven Veysel Soydal , Fırat Doğan , Ergün Yaşar , Başpınar Nuri , Özcan Oğuzhan 
Published: October 2015

Abstract
The aim of this study was to determine the ceruloplasmin (Cp) and vitamin C concentrations, the total antioxidant status (TAS), and selected biochemical parameters in dairy cows spontaneously infected with bovine leukaemia virus (BLV). Of the 27 cows included in the study, 18 animals were seropositive for enzootic bovine leukosis (EBL), whereas nine cows were seronegative and were used as controls. The serum aspartate aminotransferase (AST) (P = 0.003) and Cp concentrations (P = 0.03) decreased (65.17 ± 5.03 and 7.70 ± 0.72 respectively) in BLV-infected cows, as compared to healthy animals (100.67 ± 11.50 and 10.40 ± 0.70 respectively). A slight insignificant increase in alkaline phosphatase activity and unchanged levels of alanine aminotransferase, lactate dehydrogenase, calcium, magnesium, and TAS were demonstrated in EBL cows. As the TAS and vitamin C levels remained unchanged in EBL cows, it may be suggested that ruminants may compensate for the impaired oxidative/antioxidative balance. The results obtained also indicate that BLV may suppress AST and Cp synthesis or secretion in the liver through an unknown mechanism. The mechanism of action of BLV in hepatocytes, especially on AST and Cp, requires further investigation to elucidate the immune suppression caused by oncogenic retroviruses.
Impact of the ageing process on the intensity of post mortem proteolysis and tenderness of beef from crossbreeds
Authors: Moczkowska Małgorzata , Półtorak Andrzej , Wierzbicka Agnieszka 
Published: October 2015

Abstract
The aim of the study was the evaluation of the effect of ageing on the extent of myofibrillar proteins degradation and tenderness of beef in different crossbreeds, BB × HF and SM × HF, from which the musculus semitendinosus was obtained. The pH value, basic composition of meat, and colour parameters were determined on the 3rd d post mortem. The Warner Bratzler shear force and the extent of protein degradation were evaluated in regard to the effect of ageing time. Meat of BB × HF crossbreed had a lower amount of intramuscular fat and higher protein content (P ≤ 0.05). The shear force decreased with ageing time in the case of both crossbreeds. However, the highest values were noted in SM × HF crossbreed on days 3 and 7 of ageing. The differences in proteolysis of myofibrillar proteins and polypeptides, determined by SDS-PAGE electrophoresis, were observed between crossbreeds and the ageing time. A significant decrease in desmin and increased levels of 49-46 kDa and 32-27 kDa polypeptides (products of proteolytic degradation) were observed with an increasing ageing time. In addition, the rate of increase in the amount of 32-27 kDa polypeptides was more significant in BB × HF crossbreed. The data obtained showed that tenderness and the extent of protein degradation are associated with ageing process and animals’ genotype.
Optimisation of protocol for Clostridium botulinum detection in mink feed
Authors: Grenda Tomasz , Kukier Elżbieta , Goldsztejn Magdalena , Kwiatek Krzysztof , Kozieł Nina 
Published: October 2015

Abstract
As the test material mink feed with natural microflora was used. The analyses were conducted using Wrzosek and TPGY broth media, and Willis–Hobbs and Zeissler differential agar media. Wrzosek, Willis–Hobbs, and Zeissler media are described in Polish Standards approved by the National Standards Body in Poland and routinely used in detection of anaerobic bacteria in Poland. Detection and identification of C. botulinum was performed with a previously validated real-time PCR method based on ntnh gene detection, which is common in all C. botulinum toxotypes. The use of Wrzosek broth and Zeissler agar in routine analyses for detection and identification of C. botulinum was ineffective and limited. The obtained results showed the highest culturing process effectiveness in TPGY broth with 72 h incubation at 30°C and isolation on Willis–Hobbs agar. The real-time PCR method based on ntnh gene detection used in this study could be utilised as a supplementary tool to the mouse lethality assay.
Mast cells and eosinophils in rat mammary gland tumours induced by N-Nitroso-N-methylurea
Authors: Kissová Viktória , Ševčíková Zuzana , Revajová Viera , Herich Róbert , Levkut Mikuláš 
Published: October 2015

Abstract
The aim of the study was to evaluate the distribution and number of mast cells and eosinophils in rat mammary gland tumours induced by N-Nitroso-N-methylurea. The highest density of mast cells was found in cystic papillary adenocarcinomas of grade II. Eosinophils were detected only in the cystic papillary adenocarcinoma of grades I and II, in non-invasive cribriform adenocarcinoma and comedo-type carcinoma. Mast cell populations were observed perivascularly in the tumour stroma, in the host tumour interface, as well as in necrotic areas of neoplasms. Mast cells were observed to be intact according to their morphological changes, collectively referred to as degranulation. The obtained results indicate that mast cells and eosinophils play an important role in tumour micro-environment formation. The increased density of these cells in experimentally-induced rat mammary gland tumours suggests a poor prognosis in these cancers. Our results also confirmed that rat mammary gland tumours are good models for the study of breast cancers.
Effects of Sidr honey on second-intention healing of contaminated full-thickness skin wounds in healthy dogs
Authors: Hananeh Wael M. , Ismail Zuhair Bani , Alshehabat Musa A. , Abeeleh Mahmoud Abu , Ali Ja’far Hasan 
Published: October 2015

Abstract
The therapeutic effects of Sidr honey on second-intention healing of contaminated full-thickness skin wounds in dogs were investigated. Povidone-iodine was used as a standard treatment and served as a control. Healthy adult (two-to-four-year-old) mongrels, comprising six dogs and two bitches, were divided into four equal groups in order to obtain multi-aged wounds at the end of the study. Four 2cm × 2cm full-thickness skin wounds were created on both sides of the back area of each dog under general anaesthesia adhering to aseptic technique. Contaminated wounds were then divided into two treatment groups: Group 1, Sidr honey treated (right side wounds) and group 2, povidone-iodine treated (left side wounds). All wounds were evaluated grossly daily at the time of treatment application and digitally photographed once every week. Images were analysed using ImageJ software. The parameters of unhealed wound area and length of advancing epithelium were obtained. The epithelialisation areas, percentage of wound area, and wound contraction rate were then calculated. No significant differences were found between the two treatment groups in any of the parameters studied. Overall, both honey treated and iodine treated wounds healed well within the time period of the study (28 d). However, the study showed a beneficial effect of Sidr honey on second-intention healing of full thickness contaminated wounds in healthy dogs and the effect was comparable to that of Povidone iodine.
C2+-DaF-Lernende reflektieren über eine perfekte Sprachbeherrschung – ist diese vor dem Hintergrund der postulierten funktionalen Mehrsprachigkeit in Alltag und Beruf künftig noch gefragt?
Authors: Schumacher Monika 
Published: October 2015

AbstractBy adopting “functional plurilingualism” – a recurring concept in its new curriculum, “Lehrplan 21” – Switzerland is pursuing new avenues in foreign language education. The term refers to a goal-oriented approach to foreign language learning and teaching in primary and secondary schools, and implies that barriers to communication can be overcome by exploiting the sum of the individual’s linguistic capacities. In future, language learners will be expected to build on the interrelatedness of languages instead of developing abilities in languages that they keep separate from one another. This view of foreign language education coincides with the recommendations of the Council of Europe’sHaving reached the highest level specified by the CEFR, some learners continue their studies, seeking to maintain or reinforce their competences or to address individual weaknesses. In this article, a group of C2+ learners of German as a foreign language reflect on their desire for linguistic perfection and the notion of “functional plurilingualism” against the background of their own biographies. These learners have a high awareness and knowledge of German (often their third language) and of the learning process, which allows them to make informative statements. The data was analysed qualitatively and subjective theories were reconstructed – an approach that took account both of the multiperspectivity of the topic and of the uniqueness of the individual cases.
Economic Burden And Health-Related Quality Of Life Of Patients With Cystic Fibrosis In Bulgaria
Authors: Iskrov Georgi G. , Stefanov Rumen S. , López-Bastida Julio , Linertová Renata , Oliva-Moreno Juan , Serrano-Aguilar Pedro 
Published: October 2015

AbstractObjective:The aim of this study was to determine the economic burden from a societal perspective and health-related quality of life (HRQOL) of patients with cystic fibrosis (CF) in Bulgaria.Materials and methods:We conducted a cross-sectional study of 33 patients with CF and 17 caregivers from Bulgaria. Data on socio-demographic characteristics, health resource utilisation, informal care, labor productivity losses and HRQOL were collected from questionnaires completed by patients or their caregivers. HRQOL was evaluated with the EuroQol 5-domain (EQ-5D-3L) questionnaire.Results:Median annual costs of CF in Bulgaria were € 24 152 per patient in 2012 as a reference year. Median annual costs for children were found to be significantly higher than those for adults – € 31 945 vs. € 15 714 (p = 0.012). This outcome came from statistically significant differences in costs for main informal carer (p < 0.001) and costs for other informal carers (p = 0.022). As a single cost item, drugs had the biggest monetary impact. Median annual drug costs were € 13 059. Bulgarian CF patients showed low HRQOL results – 50 median VAS score and 0.592 median health utilities. A quarter of patients even rated their health state as worse than death.Conclusion:CF patients from Eastern Europe remain a vulnerable population with risk factors for worse health outcomes. Our study provided a state-of-the art analysis that facilitates the elaboration, adoption and application of targeted public health policies to tackle CF-related problems at national and European level.
Urothelial Carcinoma Concomitant With Malakoplakia In Non-Functioning Nephrolithic Kidneys
Authors: Kocarslan Sezen , Dokumaci Dilek Sen , Karakas Emel Yigit , Boyaci Fatima Nurefsan , Ulas Turgay 
Published: October 2015

Abstract
Nephrolithic non-functioning kidney and malakoplakia are major health problems. Kidney function cannot be fulfilled and also this leads to a high risk of development of urothelial neoplasm. We report herein a case of urothelial carcinoma concomitant with malakoplakia in non-functioning nephrolithic kidneys.
Comparison of Decontamination Standards
Authors: Hao Le Cong , Thuy Mai Dinh , Hieu Do Trung , Sas Zoltán 
Published: October 2015

Abstract
The quality of materials used in nuclear-related facilities is critical, especially the ease of decontamination of different paints and coatings. Standards describe different testing methods for classification. Nevertheless, compliance with these standards cannot be carried out negligibly from a safety point of view. In this study, a withdrawn Hungarian (MSZ-05 22.7662-83), an international ISO (ISO 8690:1988), and Russian (GOST 25146- 82) decontamination standard were compared. Four different paints were tested as part of this survey. The ease of decontamination varied mainly from poor to fair levels in the case of the Hungarian standard, while the ISO standard exhibited very good level. In the case of the Russian standard, only a theoretical comparison was carried out. Based on the results, it was found that a special epoxy-based coating can be recommended for isotope laboratories due to being the best material from an ease of decontamination point of view. From comparison of the standards considered here, it was found that the application of ISO standard is significantly faster and simpler than the withdrawn Hungarian standard. However, in the case of the Hungarian standard the data described the ease of decontamination in more details. The use of water or some other cleaning agents can be effective to remove 137Cs and 60Co contamination right after early identification. Isotope 137Cs and 60Co contamination of a surface can be cleaned quickly and effectively using distilled water for the 137Cs isotope removal from the surfaces being several times easier than that of 60Co.
Toward an Intelligent e-Learning System Using Document Classification Techniques
Authors: Abuzir Yousef 
Published: October 2015

AbstractThe purpose of this study is to propose and develop an intelligent e-learning system based on advanced document management techniques at Al-Quds Open University (QOU). In this article, we focus on a case using e-mail contents as supplement educational materials at QOU. We describe how the interactive classification system based on concept hierarchy can simplify this task. This system provides the functions to index, classify, and retrieve a collection of e-mail messages based on user profiles. By automatically indexing e-mail messages using our E-mail Classification System for e-Learning, instructors and/or students can easily find their messages and find the topics. The test results of our system evaluation showed that a good classification quality has been achieved, with a precision of 77.4%, recall of 90%, and F-measure of 82.8.