Showing papers by "Vrije Universiteit Brussel published in 1969"
TL;DR: The use of computers as an aid in documentation (through the constitution of data and literature reference files) was investigated as well as their use in cases where decisions concerning the techniques to be employed have to be made.
3 citations
TL;DR: The orientation of both molluscs is towards the incoming light-direction, less pronounced when the light-intensity to the center of the tile is decreasing, and it is possible to separate Crepidula and oyster-fixation using this property.
Abstract: The difference of phototropism and phototaxis of both molluscs influenced their fixation. The orientation of both molluscs is towards the incoming light-direction, less pronounced when the light-intensity to the center of the tile is decreasing. The density of the populations of oysters is increasing towards the center of the tiles by decreasing light-intensity, the density of the Crepidula-population decreasing towards the center of the collector. The competition of both organisms in relation to space, is, under the opposed influence of the light, less than described in the literature. Theoretically it is possible to separate Crepidula and oyster-fixation, using this property. Statistical analysis corroborated our observations.
2 citations
01 Jan 1969
TL;DR: In this paper, the authors describe the formation of stars from material of the interstellar medium with a given composition: X, the fraction of hydrogen, Y (the fraction of helium), Z (the sum of the heavy elements, which can be splitted in Z1, Z2, Z3,... representing these heavy elements).
Abstract: Stars are formed from material of the interstellar medium with a given composition: X (the fraction of hydrogen), Y (the fraction of helium), Z (the fraction of the sum of the heavy elements, which can be splitted in Z1, Z2, Z3,... representing these heavy elements).