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Zero-degree focusing of channeled ions and crystal rainbows
(Physics Letters A, 2001)
We analyze here theoretically the connection between the effect of zero-degree focusing of channeled ions and the crystal rainbow effect. The calculations were performed for Ne10+ ions and a LT 100 GT Si thin crystal. The ...
Central and baroreflex control of heart rate during the wake-sleep cycle in rat
(Sleep, 2001)
Spontaneous fluctuations in Heart Period (HP) and Mean Arterial Pressure (MAP) make it possible to evaluate baroreceptor-heart rate reflex sensitivity (BRS). 30-s sequences of HP and MAP beat-to-beat values were considered ...
Radionuclidic generators for the production of technetium-99m and rhenium-188 / Radionuklidni generatori za dobijanje tehnecijuma-99m i renijuma-188
(Facta Universitatis, Series: Physics, Chemistry and Technology, 2002)
The paper deals with production and application of open radioactive sources in modern diagnostic and therapeutic nuclear medicine. In principle, besides adequate physical, chemical and biological properties a reliable route ...
Extracting complexity waveforms from one-dimensional signals
(Nonlinear Biomedical Physics, 2009)
Background: Nonlinear methods provide a direct way of estimating complexity of one-dimensional sampled signals through calculation of Higuchi's fractal dimension (1<FD<2). In most cases the signal is treated as being ...
Monotone Signal Segments Analysis as a novel method of breath detection and breath-to-breath interval analysis in rat
(Respiratory Physiology and Neurobiology, 2008)
We applied a novel approach to respiratory waveform analysis-Monotone Signal Segments Analysis (MSSA) on 6-h recordings of respiratory signals in rats. To validate MSSA as a respiratory signal analysis tool we tested it ...
Sleep-related brain activation does not increase the permeability of the blood–brain barrier to glucose
(Journal of Cerebral Blood Flow & Metabolism, 2005)
We compared blood-brain barrier (BBB) permeability to glucose between quiet wakefulness and rapid-eye-movement (REM) sleep to assess whether changes in BBB permeability play a role in coupling glucose supply to the physiologic ...
Sleep-Dependent Changes in the Coupling Between Heart Period and Arterial Pressure in Newborn Lambs
(Pediatric Research, 2005)
This study assessed whether sleep-dependent changes in the relationship between heart period (HP) and mean arterial pressure (MAP) occur in newborn life. Electrodes for electrocorticographic, electromyographic, and ...
Possible Effects of Depleted Uranium (DU): I. Changes in Cellular and Biochemical Values in Peripheral Blood of Ruminants in Exposed Areas
(Central European Journal of Occupational and Environmetal Medicine, 2003)
The paper presents preliminary results of the study on environmental and health effects due to the use of depleted uranium (DU) ammunition during NATO bombing of Serbia and Montenegro in 1999. Samples of animal blood (sheep, ...
Effects of Acoustic Stimulation on Cardiovascular Regulation During Sleep
(Sleep, 2003)
The interaction of wake-sleep states and acoustic stimulation on cardiovascular regulation was studied on rats implanted with electroencephalogram and electromyogram electrodes and an arterial catheter. Mild acoustic stimuli ...
Brain capillary perfusion in the spontaneously hypertensive rat during the wake-sleep cycle
(Experimental Brain Research, 2004)
Hypertension is accompanied by circulatory changes in the brain and in other vascular districts; at disease onset, these changes may be largely functional and dependent on metabolic and vegetative drives. The wake-sleep ...