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Physical activity and the young female skeleton

Popular Abstract in Swedish Benskörhet (osteoporos) är en sjukdom som karaktäriseras av låg benmassa och försämrad benkvalitet, en sjukdom som leder till ökad risk för frakturer. Benskörhetsfrakturer uppkommer vanligen i handleder, axelleder, kotor, bäckenben, höftleder och knäleder. Frakturerna drabbar kvinnor oftare än män, något som till stor del beror på att nivåerna av det kvinnliga könshormoThe aim of this thesis was to identify the influence of calcium, physical activity and detraining on bone mass and bone size in girls and young women. We hypothesised that calcium intake above a specific level does not enhance the accrual of bone mineral, that exercise predominantly influences the skeleton in the early pubertal period and that reduced training is followed by a loss of exercise-ind

On a cholinergic motor innervation of the rat urethra

Choline acetyltransferase activity was demonstrated in the proximal part of the male rat urethra, indicating a cholinergic innervation of this tissue. The cholinergic nerve fibres emanated evidently from the pelvic nerves, since bilateral removal of the pelvic ganglion caused a major fall in the activity of this enzyme. The muscle activity of the circular layer of the proximal urethra was recorded

Size-selective predation on pelagic microorganisms in Arctic freshwaters

Herbivorous zooplankton may have a pronounced influence on pelagic microorganisms in Arctic freshwaters. We quantified experimentally the size-selective feeding of several zooplankton groups on pelagic microorganisms in high Arctic tundra systems. Our experiments and field study focused on dominant herbivores in Arctic freshwaters, including the cladoceran Dophnia, the copepod Diaptomus and the an

Early Permian palynostratigraphy of the northern Heimefrontfjella mountain range, Dronning Maud Land, Antarctica

Permian rocks from five localities in the northern Heimefrontfjella have been investigated palynologically and identifiable palynomorphs are present in samples from three of them, namely A and C in Milorgfjella and Lidkvarvet in Sivorgfjella. Eighty palynomorph taxa are recognized and two new combinations are proposed, Converrucosisporites gradegranulatus (Anderson) Lindstrom, comb, nov, and Canna

Direct evidence of active sympathetic vasodilatation in the skin of the human foot

1. During operative aorto-femoral vascular reconstructions on sixteen patients, the sympathetic chain was stimulated electrically between the L2 and L4 ganglia while blood flow was monitored by laser doppler flowmeters from the skin on the sole of the foot and the ankle and by an electromagnetic flowmeter from the deep femoral artery. Epidural anaesthesia to at least the T6 level was used which ex

Floral biology of North American Oenothera sect. Lavauxia (Onagraceae): Advertisements, rewards, and extreme variation in floral depth

We studied the floral biology of five North American members of Oenothera L. sect. Lavauxia (Spach) Endl. (Onagraceae L.) in field and common greenhouse settings. Oenothera sect. Lavauxia floral morphology ranges from small, cleistogamous flowers (O. flava subsp. flava (A. Nels.) Garrett in Garrett) to sonic of the longest-tubed flowers in North America (O. flava subsp. taraxacoides (Wooton &

Study of new organophosphorus derivates carriers on the selective recovery of M(II) and M(III) metals, using supported liquid membrane extraction

This paper studies different organophosphorus extractants for the selective recovery of metal ions such as Cu (II), Co (II), Ni (II), Ph (II), Fe (III), Cd (II) from effluents resulting from the metal finishing at the time of industry process. In a first step, a commercial extractant such as di(2-ethylhexyl)phosphoric acid (D2EHPA) was used as carrier for SLM extraction. Combining D2EHPA and TOPO