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	Twenty years of monitoring of the stability of the hazardous slopes of Krušné hory Mts. with precise tiltmeters Chán, Bohumil Twenty years ago the coal open pit mining in the North Bohemia under Krušné hory Mts. was started. To avoid possible accidents a complex system of monitoring in this area affected by mining was established. Detailed record
	Daily and weekly changes of the incidence of acute myocardial infarction Sitar, J. ; Střeštík, Jaroslav The authors deal with daily and weekly changes of the incidence of acute myocardial infarctions during 1999-2002 in the town of Brno. The authors have searched for possible differences between this data set and the similar set of infarctions during 1982-1986 from the whole Czech Republic. Detailed record
	Analysis of the relation between geomagnetic activity and the phase of the North Atlantic Oscillation Bochníček, Josef ; Hejda, Pavel ; Pýcha, Josef The North Atlantic Oscillation is considered to be a very robust phenomenon. The analysis of tropospheric pressure and temperature deviations from their long-term averages realised on the data set of winter (January-March) periods 1963-2001, as well as wind deviations from their long-term averages pointed at close association between high geomagnetic activity and the positive NAO phase. Detailed record
	Natural and artificial variations in the natality in Slovakia Střeštík, Jaroslav ; Mikulecký, M. ; Žirko, M. Daily numbers of births in Slovakia 1996-2001 were taken into calculations. In the annual variation a trough occurs from October to December, and short sharp minima during holidays. In the spectrum only annual and 7-day period supplemented by their higher harmonics can be found. No trace of lunar variation has been bound. Detailed record
	Reconstruction of average air temperatures for the last millenium Střeštík, Jaroslav The air temperature increase during the last century can be explained either by the enhanced green-house effect or by the regular long-term variations. These two explanations give two different forecasts as to the future climate. Reconstructed temperature series which guess the climate many centuries ago help to distinguish which model is more probable. Detailed record
	Transits of inner planets across the solar disc Střeštík, Jaroslav In rare occasions an inner planet can be located just between the Sun and the Earth for a short time. In these cases the transit of the planet across the solar disk is being observed on the Earth. More interesting but more rare are transits of Venus because the Sun rays shine through the atmosphere of the planet. In the paper is described how these transits look and how can be observed. Detailed record
	The occurrence of warm and cold days during two centuries in Prague-Klementinum Střeštík, Jaroslav On the basis of observations in Prague-Klementinum since 1775 the course of the average daily air temperature in summer and winter season has been presented. In the same way the course of maximal temperatures in the day and minimal temperatures in the night, separately for summer and winter, are also given. Detailed record
	Lengths of grapewine sprouts, air temperatures and heliogeophysical factors from the point of view of chronobiology Střeštík, Jaroslav ; Mikulecký, M. Series of sunspot numbers, indices of geomagnetic activity, mean air temperature in April and grapewine lengths measured to the 24th April were processed by power spectra and mutual coherences. Whereas spectra of sunspot numbers exhibit a pronounced peak at 11 yr, in spectra of other quantities more significant peaks occur. Detailed record
	Variability of daily average air temperatures during the observation in Prague-Klementinum Střeštík, Jaroslav Two quantities have been defined to describe the variability of average daily air temperatures with respect to the long-term annual course within a selected interval: low values mean that daily values do not differ substantially from the long-term annual course whereas high values indicate a big variability. These values were calculated for each year and each season from 1775 till 2000. Detailed record
	Solar and geomagnetic activity effects on wind fields in the Northern hemisphere winter lower troposhere Bochníček, Josef ; Hejda, Pavel The magnitude and prevailing direction of winds in the lower troposphere were analysed in the Northern hemisphere in the winter periods of the years 1964, 1967-1969, 1971-2001. Composite maps of those winds showed marked differences, in particular between the maps in which both activities were simultaneously low or high. Detailed record

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