Ice-cored mounds in a small area in northernmost Sweden are briefly described. The morphological features include hummocks, interpreted as pingos, more palsa-like mounds and fossil forms in the shape of circular ponds. Drilling in one hummock revealed a massive ice core covered by fine grained sediment and glacial till. The sediment is slightly organic and probably of interglacial age. A number of mounds appear to have subsided during the last two decades and no signs of growth have been observed ...
Tópico(s): Geology and Paleoclimatology Research
1985 - Taylor & Francis | Geografiska Annaler Series A Physical Geography
Per‐Åke Lagerbäck, Lars‐Olof Ronnevi,
Boutons and synaptic contacts on 17 presumed Renshaw cells were studied ultrastructurally. All 17 neurons were postsynaptic to axon collateral boutons of intracellularly HRP-stained triceps surae α-motoneurons and located in lamina VII, ventromedially to the main motor nuclei. The boutons and synaptic contacts could be classified into two main categories on the basis of the synaptic vesicles: S-type boutons with spherical synaptic vesicles and F-type boutons with flattened vesicles, the α-motoraxon ...
Tópico(s): Lipid Membrane Structure and Behavior
1982 - Elsevier BV | Brain Research
Per‐Åke Lagerbäck, Lars‐Olof Ronnevi, Staffan Cullheim, Jan‐Olof Kellerth,
Horseradish peroxidase (HRP) was injected intracellularly in triceps surae alpha-motoneurones. The axons and axon collaterals of these neurones were traced light and electron microscopically. Synaptic boutons of collaterals, in Rexed's lamina IX or in synaptic contact with HRP-stained motoneurone dendrites in lamina VII, were studied ultrastructurally. The boutons exhibited spherical synaptic vesicles and made synaptic contacts of two different types with HRP-stained alpha-motoneurone dendrites in ...
Tópico(s): Cellular transport and secretion
1981 - Elsevier BV | Brain Research
Per‐Åke Lagerbäck, Lars‐Olof Ronnevi, Staffan Cullheim, Jan‐Olof Kellerth,
Tópico(s): Receptor Mechanisms and Signaling
1978 - Elsevier BV | Brain Research
Tópico(s): Animal Vocal Communication and Behavior
1985 - Taylor & Francis | Geografiska Annaler Series A Physical Geography
Jan Ekstrand, Daniel Lundqvist, Lars Lagerbäck, Marc Vouillamoz, Niki Papadimitiou, Jón Karlsson,
Do coaches' leadership styles affect injury rates and the availability of players in professional football? Certain types of leadership behaviour may cause stress and have a negative impact on players' health and well-being.To investigate the transformational leadership styles of head coaches in elite men's football and to evaluate the correlation between leadership styles, injury rates and players' availability.Medical staff from 36 elite football clubs in 17 European countries produced 77 reports ...
Tópico(s): Cardiovascular Effects of Exercise
2017 - BMJ | British Journal of Sports Medicine
Tópico(s): Botany and Plant Ecology Studies
1986 - Taylor & Francis | Geografiska Annaler Series A Physical Geography
The results of drillings in dome-shaped palsas are presented. A comparison of the internal structures of these palsas and of previously investigated pingos in northernmost Sweden indicates that the processes of formation may have been similar. Drillings have also shown, that today the ground surrounding the pingos is unfrozen. However, as there are indications of former more common permafrost within the pingo area, as well as in northern Scandinavia in general, it is not unlikely that the pingos ...
Tópico(s): Cryospheric studies and observations
1986 - Taylor & Francis | Geografiska Annaler Series A Physical Geography
Heikki Hirvas, Robert Lagerbäck, Kalevi Mäkinen, Keijo Nenonen, Lars Olsen, Lars Rodhe, Morten K. Thoresen,
The Quaternary geology of the Nordkalott area in northern Fennoscandia is depicted in five maps. The themes of the maps are: Quaternary deposits, glacial geomorphology and paleohydrography, ice‐flow indicators, Quaternary stratigraphy and ice‐flow directions. The maps are briefly presented and an outline of the glacial history of the Nordkalott area is given.
Tópico(s): Geological Studies and Exploration
1988 - Wiley | Boreas