Die kurze Lebensdauer bei afrikanischen Killifischen beruht auf dem Fehlen einer starken Selektion gegen schädliche Mutationen
haben herausgefunden, dass die Häufigkeit von schädlichen Mutationen in einem Gen Hand
Das Wachstum etwa von Tropfen, Staubteilchen oder magnetischen Domänen in einem Ferromagneten folgt oft ähnlichen Gesetzen wie das Knistern von Papier. Wie Forscher des Max-Planck-Instituts für Dynamik und Selbstorganisation mit einer Studie zur Magnetisierung eines Ferromagneten belegten, lässt sich die Verteilung der Sprünge beim Wachsen mit der Netzwerktheorie beschreiben.
dabei entstehen, sind alle ähnlich groß: Einige große Scherben hebt man mit der Hand
Max Planck researchers describe Denisovan genome, illuminating the relationships between Denisovans and present-day humans. The analyses of an international team of researchers led by Svante Pääbo of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, show that the genetic variation of Denisovans was extremely low, suggesting that although they were present in large parts of Asia, their population was never large for long periods of time. In addition, a comprehensive list documents the genetic changes that set apart modern humans from their archaic relatives. Some of these changes concern genes that are associated with brain function or nervous system development.
Replica of the finger bone fragment of a Denisovan hominin on a human hand.
The Digital Health Program Actiself supports prevention and treatment of stress-related conditions
On the one hand, the app allows for a better assessment of the symptom profile, and
Soft magnetic materials (SMMs) applied in electric engines transform energy from sustainable resources into electricity. Conventional SMMs, which are currently used in industry, are prone to damage under severe mechanical loads. Researchers from the Max-Planck-Institut für Eisenforschung (MPIE), the Technical University of Darmstadt and the Central South University, China, have developed a new design strategy that increases the lifetime of SMMs and paves the way for advanced applications like high-speed motors.
soft magnetic materials is the trade-off between being magnetic soft on the one hand
Leonardo da Vinci was a tireless and inquisitive reader. He owned more than 200 books about science and technology as well as literary and religious topics. An exhibition that is being organized by the Max Planck Institute for the History of Science and the Berlin State Library at the Museo Galileo in Florence has shed new light on the intellectual universe of the artist, engineer and philosopher, who remains as fascinating as ever 500 years after his death.
Francesco di Giorgio – a manuscript that has been annotated by the artist’s own hand
Leonardo da Vinci was a tireless and inquisitive reader. He owned more than 200 books about science and technology as well as literary and religious topics. An exhibition that is being organized by the Max Planck Institute for the History of Science and the Berlin State Library at the Museo Galileo in Florence has shed new light on the intellectual universe of the artist, engineer and philosopher, who remains as fascinating as ever 500 years after his death.
Francesco di Giorgio – a manuscript that has been annotated by the artist’s own hand
Die Herstellung chiraler, enantiomerenreiner Substanzen ist ein zentrales Bestreben der Chemie. Der hier präsentierte neue Ansatz zur asymmetrischen Synthese beruht auf der sauberen und atomökonomischen Umwandlung von aromatischen Startmaterialien.
Hände nicht deckungsgleich sind, weshalb zum Beispiel ein Handschuh für die linke Hand
Leaf beetles fascinate us because of their amazing variety of shapes and rich colouring. Their larvae, however, are dangerous plant pests. Larvae of the leaf beetle Chrysomela lapponica attack two different tree species: willow and birch. To fend off predator attacks, the beetle larvae produce toxic butyric acid esters or salicylaldehyde, whose precursors they ingest with their leafy food. Scientists of the Max Planck Institute for Chemical Ecology in Jena, Germany, now found that a fundamental change in the genome has emerged in beetles that have specialized in birch: The activity of the salicylaldehyde producing enzyme salicyl alcohol oxidase (SAO) is missing in these populations, whereas it is present in willow feeders. For birch beetles, the loss of this enzyme and thereby the loss of salicylaldehyde is advantageous: the enzyme is no longer needed because its substrate salicyl alcohol is only present in willow leaves, but not in birch. Birch beetles can therefore save resources instead of costly producing the enzyme. First and foremost, however, the loss of salicylaldehyde also means that birch feeding populations do not betray themselves to their own enemies anymore, who can trace them because of the odorous substance.
On the one hand, the uptake of special plant molecules as substrates for toxin-producing
Research shows factors that contribute to irreversible somatic differentiation providing an evolutionary advantage
Evolution In complex organisms, two basic types of cells are found: on the one hand
