Dein Suchergebnis zum Thema: Feder

In a next step, the researchers fed their program with an initial assumption where

Vor wahrscheinlich etwa 11,5 Milliarden Jahren ist die Zwerggalaxie Gaia-Enceladus mit der Milchstraße kollidiert. Zu diesem Ergebnis kommt ein Forscherteam, zu dem Wissenschaftlerinnen und Wissenschaftlern des Max-Planck-Instituts für Sonnensystemforschung (MPS) in Göttingen gehören, und legt damit eine völlig neue Art der zeitlichen Einordnung des Ereignisses vor. Erstmals nutzten die Forscherinnen und Forscher unter Leitung der Universität Birmingham für die Datierung einen einzelnen Stern, der von der Kollision betroffen war, als Hinweisgeber. Mit Hilfe von Messdaten bodengebundener Observatorien und von Weltraumteleskopen konnten sie das Alter des Sterns und die Rolle, die er bei der Kollision spielte, bestimmen. Die Forschergruppe berichtet von ihren Ergebnissen heute in der Fachzeitschrift Nature Astronomy.
Spektrografen HARPS (High Accuracy Radial velocity Planet Searcher) und FEROS (Fiber-fed

The dwarf galaxy Gaia-Enceladus collided with the Milky Way probably approximately 11.5 billion years ago. A team of researchers including scientists from the Max Planck Institute for Solar System Research (MPS) in Germany for the first time used a single star affected by the collision as a clue for dating. Using observational data from ground-based observatories and space telescopes, the scientists led by the University of Birmingham were able to determine the age of the star and the role it played in the collision. The research group describes its results in today’s issue of Nature Astronomy.
spectrographs HARPS (High Accuracy Radial velocity Planet Searcher) and FEROS (Fiber-fed

Tobacco hornworm larvae exhale a small fraction of nicotine from ingested tobacco leaves as a defense signal to deter predatory spiders
Surprisingly, the nocturnal predator preferably preyed not only on larvae that fed

Some animals produce more offspring than others do. Hormones like prolactin and corticosterone can exercise a crucial influence on the behaviour of birds in the breeding season and therefore on their reproductive success. Scientists from the Max Planck Institute for Ornithology in Radolfzell and their colleagues at the universities of Princeton and Edinburgh have now demonstrated that hormone levels not only play a key role during the breeding season, but already dictate, long in advance, how many eggs a breeding pair will lay, when they will lay them and how often. An animal’s hormonal constitution is thus of major significance for its reproductive success, and is possibly an important driving force of evolution. (Proceedings of the Royal Society B, January 19, 2011)
In contrast, the animals that had a very strong hormonal reaction to stress fed their

The effect of the messenger substance neuropeptide Y depends on the behaviour of the mother during infancy
These females spent a lot of time with their offspring, fed them frequently and,

Scientists at the Max Planck Institute for Biology of Ageing in Cologne have found that a naturally occurring molecule has the ability to enhance defense mechanisms against neurodegenerative diseases.
If it is additionally fed to the worm, “we can achieve very dramatic benefits“, says

Klimaunterschiede weniger von Bedeutung für die Übertragung von Blutparasiten bei Seevögeln als erwartet
Flöhen, Zecken und Federlingen – flügellosen Insekten, die im Gefieder leben und von Federn

Some animals produce more offspring than others do. Hormones like prolactin and corticosterone can exercise a crucial influence on the behaviour of birds in the breeding season and therefore on their reproductive success. Scientists from the Max Planck Institute for Ornithology in Radolfzell and their colleagues at the universities of Princeton and Edinburgh have now demonstrated that hormone levels not only play a key role during the breeding season, but already dictate, long in advance, how many eggs a breeding pair will lay, when they will lay them and how often. An animal’s hormonal constitution is thus of major significance for its reproductive success, and is possibly an important driving force of evolution. (Proceedings of the Royal Society B, January 19, 2011)
In contrast, the animals that had a very strong hormonal reaction to stress fed their

With elegant appendages, the bacteria increase their surface area and thus improve their food intake.
Harder and his colleagues fed the bacteria coloured laminarin to check whether there