To investigate recent crustal movements between northern and southern parts of Moravo-Silesian region of the Bohemian Massif and to find their relation to movements of structure blocks of Moldanubicum, it was decided to establish a regional geodynamic network HIGHLANDS. Seven sites for monitoring GPS signals were built with respect of geological and geophysical materials in the southern area of the Českomoravská vysočina Highlands. So far two epoch 48-hours GPS measurements have been performed in 2005 and 2006 with Ashtech receivers and antennas. GPS monitored data were processed by the Bernese software v. 5.0. The rather preliminary site movements were assessed and discussed from the viewpoint of recent geodynamic motions., Zdeňka Schenková, Vladimír Schenk, František Mantlík and Milada Grácová., and Obsahuje bibliografické odkazy
The objective of the present study was to compare systemic and regional haemodynamics in a large series of spontaneously hypertensive rats (SHR, n = 32) with normotensive Wistar-Kyoto rats (WKY, n = 26) at the age of 12—16 weeks. All rats were anaesthetized with thiobutabarbital and the radioactively labelled microsphere method was used to evaluate regional blood flow with special emphasis on different cerebral areas. The high blood pressure in the SHR was mainly due to elevated total peripheral resistance, which was 90 % higher in the SHR compared to the WKY. Furthermore, heart rate was 25 % (p< 0.001) higher, but the cardiac index was lower by 20 % (p<0.01) in the SHR. Blood flow was significantly lower and vascular resistance higher in several organs such as the kidneys, other visceral organs, skeletal muscle and skin of the SHR compared to the WKY. On the contrary, blood How in the myocardium was augmented by 40 % (p<0.01) in the SHR. Blood flow was 20-50 % higher in the cerebral cortex, thalamus and caudatus (p<0.05-0.001), but attenuated in the hypophysis of the SHR. In the pons, medulla and cerebellum, blood flow was similar in the two strains. In this large microsphere study, the basal cardiac index was lower in the SHR already at this relatively early stage of established hypertension. Despite this, increased blood flow in the above mentioned cerebral regions was found in the SHR compared to the WKY.