Experientia
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Sắp xếp:
Alcaloïde des Canneberges du Nouveau-Brunswick
Experientia - Tập 27 - Trang 1141-1143 - 1971
A new alkaloid C20H22O2N2 (cannagunine) obtained from canadian Vaccinium Oxycoccus is shown to have structure 1. The structure of this compound was supported by NMR-, SM-, IR- and UV-spectra.
Über die Adsorptionskraft der Pektine in organischen Lösungsmitteln
Experientia - Tập 3 - Trang 282-283 - 1947
Pectin does not present any surface activities in organic solvents. An eventual fixation of some substances is based on mutual chemical affinity.
Adenosine triphosphate concentration in guinea pig muscle after denervation
Experientia - Tập 13 - Trang 117-118 - 1957
L'enervazione produce una notevole diminuzione dell'ATP nei muscoli gastrocnemi di cavia. In cavie trattate con tossina tetanica ed enervate immediatamente prima in uno dei due arti posteriori, l'ATP diminuisce più nell'arto enervato che in quello opposto, in preda a contrazione tetanica. I rapporti P/O del muscolo enervato diminuiscono rapidamente ed un notevole grado di disaccoppiamento delle os...... hiện toàn bộ
Magnetic resonance microscopy: in vivo sectioning of a developing insect
Experientia - Tập 44 - Trang 11-12 - 1988
The utility of magnetic resonance imaging vis-a-vis insect morphology and development was investigated. MRI is a noninvasive technique that distinguishes between tissues based on proton content and proton ‘environment’. At present a resolution of 100 μm is achievable. The technique avoids fixation artifacts and allows the detection of motion within the organism.
Gilia in human fetal Schwann cells
Experientia - Tập 32 - Trang 1575-1576 - 1976
Cilia are present in Schwann cells during myelinogenesis which suggest that these cells could migrate by ciliary movement.
Bombesin-like immunoreactivity in the pituitary gland
Experientia - Tập 39 - Trang 1158-1159 - 1983
Bombesin has been shown to stimulate release of anterior pituitary hormones both in vivo and in vitro. The aim of this study was to determine whether bombesin-like immunoreactivity could be detected in the human pituitary. Significant concentrations were found in the human anterior gland (4.6±1.5 pmoles/g), posterior gland (1.5±0.4 pmoles/g) and stalk (8.1±0.8 pmoles/g). Significant amounts were a...... hiện toàn bộ
Sociétés animales et effet de groupe
Experientia - Tập 2 - Trang 77-82 - 1946
In the present note, the author is reviewing recent researches dealing with the action carried by the group on the individual taken isolated. He distinguishes two kinds of effects: 1.Mass effect, owing above all to a modification of the medium by the population itself; 2.group effect, induced chiefly by sensorial stimuli which occurs without requiring the gathering of a large number of individuals...... hiện toàn bộ
Estimation de la redondance de figures de contour
Experientia - Tập 22 - Trang 198-200 - 1966
A description is given of an attempt to estimate the redundancy of visual figures by means of the successive prediction method whichShannon applied to language (1951). Our first problem was to find a coding method capable of being used in visual perception. Some tentative results are given.
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