37 research outputs found
The relation between the action of vitamin E and protein in the body, and the influence of various fish-liver oils in the diet upon vitamin E activity in vivo
The experiments reported here were undertaken primarily to investigate further the
histological changes occurring in the enamel organ of the ratâs incisor tooth during
vitamin E deficiency. These changes were originally described by Irving (1942) and
have been confirmed in general by Granados, Mason & Dam (1945, 1946) and by
Pindborg (7950, 1952). It was, however, found by the present writers, usinga diet based
on that of Gillman, Gilbert, Gillman & Spence (1952), that extreme changes in the
enamel organ, avertable by vitamin E, could be produced in 21 days or less, whereas
the changes described by the other authors took much longer to develop and were less
extensive.
In an attempt to determine further the effects of other dietary factors upon the
enamel organ, certain additional findings seemed to be of significance. The present
paper is concerned chiefly with these, and an account of the histological aspect is being
prepared for publication. In particular it was found that the vitamin content of the
oil containing highly unsaturated fatty acids was of importance and also that the
actions of protein and vitamin E, which superficially appeared similar, differed in
certain fundamental respectsKIM2017https://www.cambridge.org/core/journals/british-journal-of-nutrition/article/div-classtitlethe-relation-between-the-action-of-vitamin-e-and-protein-in-the-body-and-the-influence-of-various-fish-liver-oils-in-the-diet-upon-vitamin-e-activity-in-vivodiv/C6F1ED8366757D1725B07106117DEB6
A pilot randomized controlled trial to promote healthful fish consumption during pregnancy: The Food for Thought Study
The LOFT mission concept: a status update
The Large Observatory For x-ray Timing (LOFT) is a mission concept which was proposed to ESA as M3 and M4 candidate in the framework of the Cosmic Vision 2015-2025 program. Thanks to the unprecedented combination of effective area and spectral resolution of its main instrument and the uniquely large field of view of its wide field monitor, LOFT will be able to study the behaviour of matter in extreme conditions such as the strong gravitational field in the innermost regions close to black holes and neutron stars and the supra-nuclear densities in the interiors of neutron stars. The science payload is based on a Large Area Detector (LAD, >8m2 effective area, 2-30 keV, 240 eV spectral resolution, 1 degree collimated field of view) and a Wide Field Monitor (WFM, 2-50 keV, 4 steradian field of view, 1 arcmin source location accuracy, 300 eV spectral resolution). The WFM is equipped with an on-board system for bright events (e.g., GRB) localization. The trigger time and position of these events are broadcast to the ground within 30 s from discovery. In this paper we present the current technical and programmatic status of the mission
Antidiuretic activity in the pituitary gland of the koala bear
ARGININE or lysine vasopressin is found in the pituitaries of most placental mammals and arginine vasopressin has been tentatively identified in a monotreme1 and in four species of marsupials1,2. We have investigated antidiuretic activity in the pituitary of a young koala bear (Phascolarctos cinereus), which is of interest because this animal is rarely, if ever, known to drink, its water intake being derived solely from eucalyptus leaves
Hormones and electrolyte excretion in sheep
MERINO sheep in hot environments effectively reduce the rate of excretion of water but that of sodium and potassium may not change, and often increases during periods of dehydration. Renal hĂŠmodynamics may be concerned in this adjustment of kidney function but endocrine activity has been examined in the search for possible mechanisms