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Uralt: Beziehung zwischen Vögeln und Blüten

By Guest PostJune 9, 2014Nature, Sciencebeziehung, boa neurath, christian newesely, daya bay experiment, Frankfurt, gerald mayr, jenny thomas, leigh whitehead, lsnd experiment, markus schweiss, minos experiment, reinigungstechnik, sterile neutrinos, stickoxidemission, volker wilde

Wissenschaftler des Senckenberg Forschungsinstitutes in Frankfurt haben das älteste Fossil eines blütenbestäubenden Vogels beschrieben. Im gut erhaltenen Mageninhalt des Vogelfossils konnten erstmals verschiedene Blütenpflanzen-Pollen nachgewiesen werden. Daraus kann geschlossen werden, dass der Beginn der Vogel-Blüten-Beziehung mindestens 47 Millionen Jahre zurückliegt. Das Fossil stammt aus der Fossilienfundstelle Grube Messel. Die zugehörige Studie ist heute im Fachmagazin „Biology Letters“ erschienen.

Sie fliegen von Blüte zu Blüte und übertragen mit ihren langen, dünnen Schnäbeln den für die Bestäubung notwendigen Pollen: Besonders in den Tropen und Subtropen sind Vögel, neben Insekten, die wichtigsten Blütenbestäuber. (more…)

Earliest birds lacked wide diversity of modern descendants, study finds

By Guest PostJune 9, 2014ScienceChina, cretaceous period, diversity, dynamo simulations, evolutionary biology, field museum, geologic evolution, hummingbirds, kometeneis, lander philae, neoproterozoic era, poroeses eis, raumsonde, thomas loerting, tschurjumow gerassimenko, umwelttechnik, university of chicago, weltall

Birds come in astounding variety—from hummingbirds to emus—and behave in myriad ways: they soar the skies, swim the waters and forage the forests. But this wasn’t always the case, according to research by scientists at the University of Chicago and the Field Museum.

The researchers found a striking lack of diversity in the earliest known fossil bird fauna—a set of species that lived at about the same time and in the same habitat. “There were no swans, no swallows, no herons, nothing like that. They were pretty much all between a sparrow and a crow,” said Jonathan Mitchell, a PhD student in the Committee on Evolutionary Biology and lead author of the new study, published May 28 in Proceedings of the Royal Society B. (more…)

Hydrologists Find Mississippi River’s Buffering System for Nitrates is Overwhelmed

By Guest PostJune 9, 2014Environmentancient magnetic field, carbon fiber thailand, cfrp reinforced polymer, climate plan, crystalline filaments, dead zone, f1 cars, fiber reinforced plastics, formula 1 cars, fraction, geology, green america, gulf of mexico, john podesta, lars ellenrieder, mechanism, mississippi river, sam komplex, usgs, zellfluessigkeit

AUSTIN, Texas — A new method of measuring the interaction of surface water and groundwater along the length of the Mississippi River network adds fresh evidence that the network’s natural ability to chemically filter out nitrates is being overwhelmed.

The research by hydrogeologists at The University of Texas at Austin, which appears in the May 11 edition of the journal Nature Geoscience, shows for the first time that virtually every drop of water coursing through 311,000 miles (500,000 kilometers) of waterways in the Mississippi River network goes through a natural filtering process as it flows to the Gulf of Mexico. (more…)

Brown University Oncology Research Group: Twenty years of cancer treatment trials

By Guest PostJune 7, 2014Healthbrown university, cat scan, catheters, causal model, cytosol, danger to children, elias bareinboim, fassprotein, france, fusion problem, implants, judea pearl, mdm10, nikolaus pfanner, pot tarts, rhode island hospital, Technology, thomas becker, turing award, warwick

Since 1994 cancer doctors affiliated with the Alpert Medical School have had a place with funding, administrative, and collegial support to develop and test novel cancer treatments: The Brown University Oncology Research Group.

PROVIDENCE, R.I. [Brown University] — Too few cancer patients, especially those with pancreatic cancer, get to the point that Raymond Sabella reached in the spring of 2014. Ten months after he began his trek from the diagnosis of an inoperable tumor to experimental chemotherapy and then radiation, he reports feeling great. He’s gaining back some of the weight he lost, but not too much, and something else is back, too. (more…)

A new device deciphers the language of cells

By Guest PostJune 7, 2014Healthankur chakravarthy, attract, biotechnologist, bottleneck, cd4 t cells, China, decipher, era, fitcode, hpv cancers, jeans, new device, oropharyngeal cancers, peter schulam, proportionate booty, prostate cancer, rian buckley, stephanie chacharon, Technology, tim fenton, tonsil cancers, tumour development, united states, yale

A biomedical engineer listens in on what proteins are saying.

As inventions go, Yale biomedical engineer Rong Fan’s entry into the innovation sweepstakes is not much to look at. Fan’s device, impressively named a single-cell, 45-plex protein secretion measurement platform, seems to be little more than a sandwich of two sheets of clear silicon rubber the thickness of window glass, each sheet a bit smaller than a credit card and bearing a smaller, darker rectangle divided into 14 vertical sections. It has no flashing lights, no intriguing noises, no moving parts, no signs of Applesque high design. Indeed, the object, displayed in Fan’s bustling laboratory on the first floor of the Daniel L. Malone Engineering Center, doesn’t appear to be doing anything at all. (more…)

Woran forscht Alexander Gerst auf der Internationalen Raumstation ISS?

By Guest PostJune 7, 2014Sciencealexander gerst, circadian rhythm, cytokine elisa kits, dlr, elisa tests, elise elliott, enzyme marker, esa astronaut, fracking sites, Human creb, human Tau, immunological test, immunosorbent assay, internationalen raumstation, iss, msl, nicole deziel, phospho elisa kits, raumfahrt, walter moore

Wie können Turbinenschaufeln noch leichter und gleichzeitig stabiler werden? Kann ein elektrischer Leiter ein Magnetfeld aufbauen, das Raumschiffe vor dem Sonnenwind schützt? Was können wir aus den physiologischen Veränderungen, die die Astronauten im Weltraum erfahren, für den Menschen auf der Erde lernen? Diesen und weiteren spannenden Fragen will der deutsche ESA-Astronaut Alexander Gerst an Bord der Internationalen Raumstation ISS während seiner Mission “Blue Dot” auf den Grund gehen. Unter dem Motto “Shaping the future – Zukunft gestalten” wird der 38 Jahre alte Geophysiker zwischen seinem Start am 28. Mai und seiner Landung am 11. November 2014 circa 100 Experimente durchführen. 35 Experimente kommen aus Europa – die meisten davon aus deutschen Forschungseinrichtungen wie dem Deutschen Zentrum für Luft- und Raumfahrt (DLR). (more…)

Forscher der Universität Wien entwickeln neue Software für die Europäische Südsternwarte (ESO)

By Guest PostJune 7, 2014Sciencealma, best doctors, cafewell concierge, Chile, environmental contaminants, eso, forscher, gas development, group, kevin rittberger, koku nonoa, kyu rhee, literatur, mach theater, metallgewinnung, planetensystem, schauspiel, tackle cancer, universitaet wien, writer in residence

Kalibrierung astronomischer Beobachtungsdaten optimiert Datenreduktionspipeline

Ohne Kalibrierung können astronomische Beobachtungsdaten nicht wissenschaftlich ausgewertet werden. Forscher um Astrophysiker Werner Zeilinger und Mathematiker Hans Georg Feichtinger, beide Universität Wien, entwickelten im Auftrag der Europäischen Südsternwarte (ESO) spezielle Softwaremodule für eine weitgehend automatisierte Kalibrierung. Diese neue Software, die in Datenreduktionspipelines der ESO Anwendung finden wird, filtert erfolgreich und effizient Verzerrungen aus Bildern heraus, die im optischen und infraroten Wellenlängenbereich aufgenommen wurden. (more…)

Our own treacherous immune genes can cause cancer after viral infection

By Guest PostJune 6, 2014Healthafrican lake, aleksandra mitrovic, attraktive gesichter, brazil, cause cancer, cosmic origins spektrograph, entwicklung des zentralsterns, fishery production, helmut leder, hpv, hpv vaccination, human papillomavirus, jim russell, leaked emails, nicole reindl, sao paulo, schoene menschen, schoenheit, shitiest election, stingray nebel, united states, vergangenheit des menschen, viral infection, World Health Organisation

HPV (human papillomavirus) infection is widely known to induce cancer. Many of the mutations that cause this virally-induced cancer are caused by a family of genes that normally combats viral infections, finds new UCL research.

This raises the possibility of developing drugs to regulate the activity of these genes to prevent HPV-associated cancers from developing and reduce the ability of existing cancers to evolve resistance to treatments. (more…)

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