Guest Post – Page 206 – Shamskm: A site to exchange knowledge and solutions

The Supernova That Wasn’t: A Tale of 3 Cosmic Eruptions

By Guest PostDecember 21, 2016Scienceblobs of gas, cosmic eruptions, eta carinae, great eruption, massive star system, megan kiminki, nathan smith, supernova

Combining images taken with the Hubble Space Telescope over more than 20 years, a team of UA researchers has discovered that Eta Carinae, a very massive star system that has puzzled astronomers since it erupted in a supernova-like event in the mid-19th century, has a past that’s much more violent than they thought. The findings help rewrite the story of how this iconic and mysterious star system came to be and present a critical piece of the puzzle of how very massive stars die. (more…)

Westerly winds have blown across central Asia for at least 42 million years

By Guest PostDecember 20, 2016Sciencealexis licht, central asia, climate simulations, eocene epoch, geologist, guillaume dupont nivet, himalayan mountains, tibetan plateau, tibetan uplift, westerly winds

The gusting westerly winds that dominate the climate in central Asia, setting the pattern of dryness and location of central Asian deserts, have blown mostly unchanged for 42 million years. (more…)

Bats Use Second Sense to Hunt Prey in Noisy Environments

By Guest PostDecember 19, 2016Nature, Sciencebats, dylan gomes, echolocation, hunt prey, mating calls, mike ryan, rachel moon, second sense, sensory mode, vocal sacs, wouter halfwerk

AUSTIN, Texas — Like many predators, the fringe-lipped bat primarily uses its hearing to find its prey, but with human-generated noise on the rise, scientists are examining how bats and other animals might adapt to find their next meal. According to a new study, when noise masks the mating calls of the bat’s prey, túngara frogs, the bat shifts to another sensory mode—echolocation. (more…)

Hunt for ninth planet reveals new extremely distant Solar System objects

By Guest PostDecember 18, 2016Sciencechadwick trujillo, david tholen, distant solar system, ninth planet, oort cloud object, orbital motion, planet 9, planet x, scott sheppard, trans neptunian objects

Washington, DC — In the race to discover a proposed ninth planet in our Solar System, Carnegie’s Scott Sheppard and Chadwick Trujillo of Northern Arizona University have observed several never-before-seen objects at extreme distances from the Sun in our Solar System. Sheppard and Trujillo have now submitted their latest discoveries to the International Astronomical Union’s Minor Planet Center for official designations. A paper about the discoveries has also been accepted to The Astronomical Journal. (more…)

Wenn Wasser zum Zerreißen gespannt ist

By Guest PostDecember 17, 2016Sciencechristoph dellago, dampfblasen, georg menzl, kavitation, kavitationsprozess, philipp geiger, photosynthese, vsc, wasser, zugbelastung

Computersimulation erlaubt Einblick in Dampfblasen auf molekularer Ebene

Wasser kann über lange Zeit einer beachtlichen Zugbelastung standhalten. Dies ist eine Voraussetzung für wichtige biologische Prozesse wie etwa den Wassertransport in Bäumen. Experimente über die Stabilität von Wasser unter Zugbelastung kamen bis dato jedoch zu stark unterschiedlichen Resultaten. PhysikerInnen um Christoph Dellago von der Universität Wien entwickelten mit Hilfe von Computersimulationen ein mikroskopisches Modell, das die Stabilität von Wasser abhängig von der angelegten mechanischen Spannung quantitativ vorhersagt. Dabei zeigte sich, dass die Zugstabilität von Wasser höher ist als bisher angenommen. Die aktuelle Studie erscheint im Fachmagazin “PNAS”. (more…)

‘Perfect’ soap molecule

By Guest PostDecember 17, 2016Sciencecleaning products industry, dionisios vlachos, micelles, ofs, oleo furan surfactant, paul dauenhauer, renewable soap molecule, sironix renewables, soap molecule, soap particles

Discovery could have major impact on multibillion-dollar cleaning products industry

A team of researchers, led by the University of Minnesota, has invented a new soap molecule made from renewable sources that could dramatically reduce the number of chemicals in cleaning products and their impact on the environment. (more…)

Earthquakes, ‘Marsquakes,’ and the possibility of life

By Guest PostDecember 16, 2016Scienceearthquakes, erosion, john parnell, mars, marsquakes, nigel blamey, possibility of life, pseudotachylites, sean mcmahon, seismic activity, surface, yale geologist

A new study shows that rocks formed by the grinding together of other rocks during earthquakes are rich in trapped hydrogen — a finding that suggests similar seismic activity on Mars may produce enough hydrogen to support life. (more…)

Offenheit hinterlässt Eindruck

By Guest PostDecember 16, 2016Economy, Small Businessaufmerksamkeit, eindruck, junge unternehmen, leonhard dobusch, management kreise, offenheit, open strategy, thomas gegenhuber

Junge Unternehmen, die sich den Prinzipen von „Open Strategy“ verschreiben, erhalten mehr Aufmerksamkeit und wirken vertrauenswürdiger. Das zeigen Leonhard Dobusch vom Institut für Organisation und Lernen und Thomas Gegenhuber von der JKU Linz in der Fachzeitschrift „Long Range Planning“. Dazu zeichneten die Wissenschaftler den „offenen Weg“ von zwei Start-Up-Unternehmen nach. (more…)

Author Archives: Guest Post