Exergy Efficiency of Bulgarian Lignite fired Steam Boiler P-62 at various Load and Fuel Quality

The article is presented a study of exergy and energy efficiency of steam boiler Ep 670/140 also referred as P-62 that burns low-quality Bulgarian lignite. Both efficiencies were determined in design modes of the boiler: on two loads - 70 % and 100 % and using on each load three different qualities of fuel in terms of its lower heating value - deteriorated 5525 kJ/kg (1320 kcal/kg), guaranteed 5945 kJ/kg (1420 kcal/kg) and improved 6700 kJ/kg (1600 kcal/kg). Due to the specific design features of the boiler - "T" shape design and numerous heat transfer surfaces the "fuel-product efficiency" method for calculation is used. The obtained results show that exergy efficiency in whole range of load and lignite quality change is low - between 3

Comparative Analysis between Single- and Two-Stage District Water Heating by Backpressure Steam Turbine

In the article is estimated the profit of the transition from single to two-stage district water heating by back pressure steam turbine. It is obtained theoretical expressions for extra produced and consumed power in a two-stage heating system compared to one single-stage. An innovation in the expressions is presentation of extra powers as ratio to the turbine heat load. By using the expressions is obtained results for these powers under certain assumptions. The results of extra produced and consumed powers from the formulas are compared with results from models of a concrete steam turbine installation

BUILDING OWL ONTOLOGY IN FEDORA DIGITAL REPOSITORY

Digital repositories find more and more applications in various information systems and especially in e-learning systems. Along with storing digital objects the repositories need to also to represent domain knowledge, user profiles, multilanguage classification taxonomies, etc. This could be achieved by using ontologies represented in OWL. The Fedora digital repository is one of most powerful repositories. It supports relationships between the digital objects that are expressed in the RDF language. This allows implementation of OWL ontologies in Fedora. In this paper we describe in details our approach to represent OWL Lite ontologies in Fedora. We have also implemented a web based ontology editor that allows easy definition, modification and storing OWL ontologies in Fedora. The editor is written in PHP, uses the Fedora services for the interface with the repository and AJAX (jQuery) for building the user interface. The paper discusses also the architecture and the implementation of the editor

Share.TEC System Architecture

This paper presents the Share.TEC system architecture and the first system prototype. This description stresses on the main system components and underlying technologies, standards and protocols. The main system functionalities are following logically from the main use cases and user requirements. The system design allows a tight integration between data, which have been automatically harvested from various external repositories, and a representation of the ontology that describes all aspects of the teacher education domain. The proposed implementation relies on modern features such as searching a net of digital objects interconnected by custom-defined relations. A multicultural system which accommodates to the user preferences requires specific user interface. The dynamic approach for presenting the information to the user, based on the teacher education ontology, contributes to the flexibility of the system

OFFICIAL INFORMATION ON THE PREVENTION, PROPHYLAXIS, DIAGNOSIS AND TREATMENT OF MALARIA - A COMPARATIVE ANALYSIS BETWEEN THE REPUBLIC OF GREECE AND THE REPUBLIC OF BULGARIA

Malaria is still one of the most significant global viral diseases, causing more deaths than all other parasitic diseases. Prevention, chemoprophylaxis, opting for different non-drug methods and behaviors, procedures for arrivals from malaria-active areas, transmission dynamics, all diagnostic methods and treatment of malaria disease are at the heart of protecting the health of people traveling, staying and returning from malaria active areas. Our research summarizes all the steps, stages and roles of your organizations and medical specialists in the process of diagnosis, prophylaxis, prevention and treatment, as well as the similarities and differences in the legislation and organization of the health system in the Republic of Greece and the Republic of Bulgaria

ROLE AND TRAINING OF STUDY NURSE AND STUDY COORDINATOR IN CONDUCTING CLINICAL TRIALS FOR THE DEVELOPMENT OF NEW MEDICATIONS

Clinical research is essential for the drugs development. While the responsibilities of principal investigator are clearly defined in the Guideline for Good clinical practice, the role of the other members of the study team are not well specified. Study nurses and study coordinators play a vital role in delivering clinical research, and ultimately improving patient care and treatment pathways. Duties could include: supporting a patient through their treatment as part of a clinical trial; preparing trial protocols and other trial-related documentation; helping to develop care pathways or regimens for patients; dealing with data collection; and co-ordinating the initiation, management and completion of the research; managing a team. In order to perform some of these obligations, additional training is required in many cases, which is not included in the course of general education of health care providers. However, the roles and responsibilities may vary based on study design, study phase, therapeutic area and study site where the trial is performed. In many countries, Medical universities, pharmaceutical companies, public health organizations and professional nurse organizations provide additional training courses and the health care providers are certified. In our research, we are trying to summarize the roles of medical professionals in the development of new medications and to provide information how additional trainings and education is organized and performed in Bulgaria, United Kingdom and USA

Adaptability Approaches in Digital Libraries

This paper examines some approaches for endowing digital libraries with adaptability capabilities in order to scaffold and enhance end user experience. The paper provides a general overview of techniques and methods commonly adopted for achieving adaptability. It also discusses how these can be implemented, and to this end illustrates specific examples and guidelines drawn from the practical experience that the authors are currently gaining in the Share.TEC European project, a context in which adaptability is key to managing and responding to considerable diversity in user requirements

ID5.21.1 - Integration of LearnWeb and KRService into TENCompetence - LearnWeb2.0 v.0.4

Mazzetti, A., Dicerto, M., Grigorov, A., Georgiev, A., Zerr, S., & Mendez, C. (2009). ID5.21.1: Integration of LearnWeb and KRService into TENCompetence - LearnWeb2.0 v.0.4 - Available under the three clause BSD licence, Copyright TENCompetence Foundation.This document accompanies the release of the version 0.4 of LearnWeb2.0, here on called for convenience: LearnWeb v.0.4 and KRService v.0.4. This document contains the Release Notes, the link to sources and the URL for running and installing the application.The work on this publication has been sponsored by the TENCompetence Integrated Project that is funded by the European Commission's 6th Framework Programme, priority IST/Technology Enhanced Learning. Contract 027087 [http://www.tencompetence.org