Circadian biorhythms change with age and such changes are caused by the loss of both the time and the space structure. These alterations of biorhythms are associated with poor health and the end of life but we do not know the extent to which they represent cell clock system injury. It seems that ageing of biorhythms in mammals, i.e. including humans, is caused by the ability of suprachiasmatic ...

Chronobiological markers of depression display a biological desynchronization which participates in the pathogenesis of depression. Mood disorders and clock genes have shown significant associations suggesting a possible pathogenetic link between them, providing a privileged base for exploring biorhythmic endophenotypes. They would be useful indicators of vulnerability mechanisms, giving rise t...

Abstract Congenital Central Hypoventilation Syndrome (CCHS) leads to insufficient breathing especially during sleep. While patients can be ventilated and monitored the night, adolescents undergo changes in their biorhythm lifestyle are at higher risk inadvertently fall asleep stop day. In this paper, we propose a prototype mobile wake-up device worn behind both ears that constantly measures oxy...

While the significance of obesity as a serious health problem is well recognized, little is known about whether and how biometerological factors and biorhythms causally contribute to obesity. Obesity is often associated with altered seasonal and daily rhythmicity in food intake, metabolism and adipose tissue function. Environmental stimuli affect both seasonal and daily rhythms, and the latter ...

We investigated the efficacy and the residual effect of fipronil(R) against two species of triatomine bugs, Triatoma infestans and Rhodnius neglectus, in laboratory conditions measuring concentration-response and residual activity on different surfaces (dried mud and lime coated mud). Lethal concentrations (LC50,90) were determined on filter paper. The higher insecticide efficacy against R. neg...

Neorickettsia helminthoeca is an obligate intra-cytoplasmic bacterium that causes salmon poisoning disease (SPD), an acute, febrile, fatal disease of dogs. The complex life-cycle of this pathogen involves stages in an intestinal fluke (Nanophyetus salmincola), a river snail (Oxytrema silicula), in fish, and in fish-eating mammals. This complexity has created confusion with respect to the variou...

Organic farming systems rely on the management of biological cycles for the provision of nutrients, which are crucial to maximising the production from the system. Rotations based on the use of grass-legume leys are central to the concept of organic farming systems, because they have the potential to support both animal production, and a subsequent, exploitative, arable cropping phase. A major ...

The article presents generalized scientific researches and experimental data on the bioecological peculiarities of North American species Juglans L. genus. seasonal rhythm development are revealed. cinerea L., J. rupestris Engelm. major (Torr.) A. Heller were first to wake up nigra californica S. Wats., hindsii (Jeps.) Jeps. ex R.E. Sm. a little later. biorhythm woody plants is closely related ...

Low nitrogen availability in the high Arctic represents a major constraint for plant growth, which limits the tundra capacity for carbon retention and determines tundra vegetation types. The limited terrestrial nitrogen (N) pool in the tundra is augmented significantly by nesting seabirds, such as the planktivorous Little Auk (Alle alle). Therefore, N delivered by these birds may significantly ...