CORONARY STATUS, PHYSICAL CAPACITY, LEFT VENTRICULAR FUNCTION AND PROGNOSIS IN MEDICALLY STABILIZED PATIENTS WITH UNSTABLE ANGINA

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LEFT VENTRICULAR HYPERTROPHY, LEFT VENTRICULAR FUNCTION AND BETABLOCKERS IN PATIENTS WITH ESSENTIAL HYPERTENSION

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LEFT VENTRICULAR RELAXATION AND RAPID FILLING IN PATIENTS WITH ESSENTIAL HYPERTENSION AND UNSTABLE ANGINA PECTORIS

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EARLY ATRIAL PACING TEST FOR MYOCARDIAL CONTRACTILITY EVALUATION IN PATIENTS WITH UNSTABLE ANGINA PECTORIS

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EARLY VELOERGOMETRIC TEST AND ATRIAL PACING TEST IN PATIENTS WITH UNSTABLE ANGINA PECTORIS

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STRUCTURE OF THE HOSPITAL MORTALITY FROM ACUTE MYOCARDIAL INFARCTION

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Biblioteka osnovne škole i njena funkcija u nastavi srpskog jezika i književnosti

The place and the role of the primary school’s library have been taken into consideration within the educational process and its function in teaching Serbian language in elementary school. All of these facts have been mentioned in our work. The aim of our work is to point to existing state and ranges of this insufficient reasearched area. The area of teaching methods of Serbian language and literature as well as potentials of school’s library as multimedial school centre. It is particularly important in the part of changes of aims and tasks of all libraries caused by strong progress of informational technologies, with new forms of information and know ledge. This is time when the appearance of digital resources lead to changes of the structure of the library fund, and libraries increasingly get epithet and characteristic (trait) of that electronic or virtual library. Activities and functions of school library have been taken into consideration by using method of the theoretical analysis, while cultural and historical conditions and courses of library practice in educational process. In interpreting the results of surveys of attitudes of teachers, teacher of Serbian language and school librarians on professional cooperation and the use of library resources, as well as the attitudes of older pupils in primary school on the work of the school library, books and reading, we used analytical and descriptive method. The results of reasearch of all aspects of librarian-informational, educational and cultural public library’s activity show that cooperation between librarian and teachers, Serbian language teachers has very important role in order to fulfill plan and program in school subject-Serbian language as well as for the work of school sections which are led by teachers and Serbian language teachers. At the same time reading room of school library becomes convenient and stimulous surroundings for conducting supplementary and complementary education, as well as for pupils’ research work, doing homework preparation for lessons or for competition in Serbian language. The more activation of the wholesome school library resources will contribute to much better mutual work of teachers, Serbian language teachers and school librarian

Realizations of the Lie superalgebra q(2) and applications

The Lie superalgebra q(2) and its class of irreducible representations V_p of dimension 2p (p being a positive integer) are considered. The action of the q(2) generators on a basis of V_p is given explicitly, and from here two realizations of q(2) are determined. The q(2) generators are realized as differential operators in one variable x, and the basis vectors of V_p as 2-arrays of polynomials in x. Following such realizations, it is observed that the Hamiltonian of certain physical models can be written in terms of the q(2) generators. In particular, the models given here as an example are the sphaleron model, the Moszkowski model and the Jaynes-Cummings model. For each of these, it is shown how the q(2) realization of the Hamiltonian is helpful in determining the spectrum.Comment: LaTeX file, 15 pages. (further references added, minor changes in section 5

VIROLOGICAL AND SEROLOGICAL STUDY ON PNEUMONIA AFFECTIONS IN THE VARNA DISTRICT, COVERING THE PERIOD 1969—1970

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Annual streamflow of Bulgaria in the beginning of XXI century

Estimating the annual streamflow under the climate change is a challenge for hydrology science and an important task for geography as well. There is no analysis about the basic statistical parameters of the annual runoff time-series after 2000 in scientific investigations in the country. This paper describes Bulgaria’s annual streamflow during 2000 – 2016 for the main catchment areas in the country (Danube watershed, Black Sea catchment area and the Aegean Sea watershed). The work is based on publicly available data of annual streamflow. The screening of the hydrological data for homogeneity, randomness, probability distribution and the trend is based on statistical methods. The obtained results show regional differences in scale of fluctuation of hydrological variables around the norm for the referent periods, in the years with maximum and with the minimum volume of the water resources, in the probability distribution of empirical data. All timeseries are homogeneous, randomly and with the absence of the trend. The work draws a conclusion that annual streamflow of main catchment areas of Bulgaria in the beginning of XXI century is in the normal frame and with larger fluctuation than the referent periods and that the time-series statistical models need confirmation using the larger base of hydrological data. This work is the first estimation of the annual streamflow during XXI century in Bulgaria by major watersheds and it gives a new information about hydrological processes in the country