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Is Self-Fumigation for the Birds?

By Guest PostJune 4, 2014Natureanthony straub, better workday, bilder, biologists, birds, darwin, ecuador, endangered species, floreana island, galapagos islands, guernica, hashed passwords, hurricane andrew, hydrophobic polymer nanofibers, isabela island, japanese volcano, kim cameron, king solomon, malerei, mammals, monika fink, nanobubble membrane, nashorn handel, north atlantic hurricanes, sakurajima volcano, santa cruz island, schwarzmarkt, siyuan xian, university of utah, user account, yahoo users

Save Threatened Species by Giving Them Treated Cotton for Nests

When University of Utah biologists set out cotton balls treated with a mild pesticide, wild finches in the Galapagos Islands used the cotton to help build their nests, killing parasitic fly maggots to protect baby birds. The researchers say the self-fumigation method may help endangered birds and even some mammals.

“We are trying to help birds help themselves,” says biology professor Dale Clayton, senior author of a study outlining the new technique. The findings were published online May 5, 2014, in the journal Current Biology. (more…)

Erstmals wandernde Defekte im “Wundermaterial” Graphen analysiert

By Guest PostJune 4, 2014Sciencedefekte im graphen, graphen defektanalyse, niedrigdimensionale materialien, wandernde graphen defekte, wundermaterial graphen

Unvollkommenheiten und Defekte in der atomaren Anordnung eines Kristalls sind für viele Materialeigenschaften verantwortlich. Die Wanderung (Diffusion) dieser Defekte bewirkt zudem Veränderungen in der Mikrostruktur von Festkörpern. Jedoch ist die Abbildung von nicht-periodischen atomaren Anordnungen in konventionellen Materialien und deren Dynamik eine große experimentelle Herausforderung. Nun ist es Physikern um Jannik Meyer von der Universität Wien zum ersten Mal gelungen, die Diffusion einer Doppel-Fehlstelle im “Wundermaterial” Graphen über einen längeren Zeitraum zu beobachten. Die Studie wurde in dem international anerkannten Journal Nature Communications veröffentlicht

In jedem Material finden sich Defekte auf der atomaren Skala. Für konventionelle Materialien bleiben sie jedoch – außer an der Oberfläche – in einer viel größeren Gruppe von perfekt angeordneten Atomen des Kristalls verborgen. Für ein zweidimensionales Material wie Graphen ist das jedoch anders. (more…)

Geheimnisvolle Höhlenbewohner

By Guest PostJune 4, 2014Environmentbildung von mondmilch, geheimnisvolle hoehlenbewohner, hoehlenablagerung, mondmilch, mondmilchablagerung, mondmilchprobe

Die Tiroler Hundalm Eis- und Tropfsteinhöhle birgt Vorkommen der so genannten „Mondmilch“. Diese für Karstgebiete typische, weißliche Höhlenablagerung wird von Millionen von Mikroorganismen besiedelt, deren Funktion bis heute nur lückenhaft geklärt ist. Christoph Reitschuler vom Institut für Mikrobiologie ist in einem vom TWF geförderten Projekt dem Leben in Mondmilch auf der Spur. (more…)

R.I. nitrogen cycle differs in bay and sound

By Guest PostJune 4, 2014Environmentanammox, bay sediments, environmental process, nitrogen cycle, seafloor sediments, sediment cores

A new study reports that anammox, a key process in the nitrogen cycle, is barely present in Narragansett Bay even though it’s a major factor just a little farther out into Rhode Island Sound. Scientists traced that to differences between bay and sound sediments, but that raises new questions about what’s going on in the Bay to account for those. (more…)

What Finding out a Child’s Sex before Birth Says about a Mother

By Guest PostJune 3, 2014Healthbaby, birth, brit accents, claire kamp dush, conscientiousness, older americans, pregnancy, sarah hargus ferguson, sex, transgender voices

Women who choose not to find out are more egalitarian, conscientious

COLUMBUS, Ohio – An expectant mother who chooses to find out her child’s sex before birth may be giving subtle clues about her views on proper gender roles, new research suggests.

The study found that women who choose not to learn their child’s sex may be more open to new experiences, and combine egalitarian views about the roles of men and women in society with conscientiousness. (more…)

Exotisches Teilchen bestätigt

By Guest PostJune 3, 2014Scienceadriana hamacher, arbeit der zukunft, behnam abasht, bert2, bristol robotics laboratory, broiler chickens, communicative robots, darmstadt, disturbing behavior, erbschaftsteuer, jesse zaretsky, marco leimeister, marie mutryndisease, michelle peterson, polystyrene eggs, quarks, recoverypride, universitaet tuebingen, wooden breast chickens, wooden breast syndrome

Tübinger Forscher: Bei Experimenten mit dem COSY-Beschleuniger Quarks im Sechserpack nachgewiesen

Über Jahrzehnte haben Physiker vergeblich nach exotischen Bindungszuständen gefahndet, die aus mehr als drei Quarks bestehen. Wissenschaftler der Universität Tübingen waren an einem Experiment am Jülicher Beschleuniger COSY beteiligt, das nun zeigt: In der Natur kommen tatsächlich derartige komplexe Teilchen vor. Ihre Erkenntnisse hat die WASA-at-COSY Kollaboration in der Fachzeitschrift „Physical Review Letters“ veröffentlicht. (more…)

Growing inequalities make science more of a ‘winner takes all’ field

By Guest PostJune 3, 2014ScienceBeijing, crowd worker, economic inequality, globalization, joe silber, klickarbeiter, outsourcing, Science, university of michigan

ANN ARBOR — As new research documents growing inequalities in health and wealth, the gap between “haves” and “have-nots” is growing in the field of scientific research itself, says University of Michigan sociologist Yu Xie.

“It’s surprising that more attention has not been paid to the large, changing inequalities in the world of scientific research, given the preoccupation with rising social and economic inequality in many countries,” said Xie, research professor at the U-M Institute for Social Research and professor of sociology, statistics and public policy. (more…)

Leptin also influences brain cells that control appetite, Yale researchers find

By Guest PostJune 3, 2014Sciencebrain cells, desi project, galaxy seeking robots, hypothalamus, illuminated fiducials, influence, isoscapes, leptin, neurons, paradigm, parker fagrelius, protodesi, signals, tamas horvath

Twenty years after the hormone leptin was found to regulate metabolism, appetite, and weight through brain cells called neurons, Yale School of Medicine researchers have found that the hormone also acts on other types of cells to control appetite.

Published in the June 1 issue of Nature Neuroscience, the findings could lead to development of treatments for metabolic disorders such as obesity and diabetes. (more…)

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