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Researchers Grow Carbon Nanofibers Using Ambient Air, Without Toxic Ammonia

By Guest PostApril 13, 2014Scienceanatoli melechko, carbon atoms, carbon nanofibers, gould belt, herve bouy, hipparcos, joao alves, joseph tracy, north Carolina, state university

Researchers from North Carolina State University have demonstrated that vertically aligned carbon nanofibers (VACNFs) can be manufactured using ambient air, making the manufacturing process safer and less expensive. VACNFs hold promise for use in gene-delivery tools, sensors, batteries and other technologies.

Conventional techniques for creating VACNFs rely on the use of ammonia gas, which is toxic. And while ammonia gas is not expensive, it’s not free. (more…)

Dust in the wind drove iron fertilization during ice age

By Guest PostApril 12, 2014Sciencedust borne iron, ice age, ice age cycles, iron fertilization, iron hypothesis, ocean carbon storage, plankton growth, wind borne dust

Researchers from Princeton University and the Swiss Federal Institute of Techonology in Zurich have confirmed that during the last ice age iron fertilization caused plankton to thrive in a region of the Southern Ocean. (more…)

DLR testet Solarflugzeug für Weltumrundung

By Guest PostApril 12, 2014Scienceartificial sense, augen, bruno gingras, das projekt, die luft, dlr, electrical stimuli, jnd, manuela marin, musik, ricardo holdo, rolf henke, sliman bensmaia, tanz

Einmal mit der Kraft der Sonne um die Erde fliegen und dabei Kontinente und Ozeane überwinden. Diesem bisher unerreichten Ziel stellt sich das Projekt SolarImpulse. Mit einem extrem leichten Flugzeug bedeckt von Solarzellen und angetrieben von vier Elektropropellern soll dieses fliegerische Wagnis 2015 gelingen. Das Deutsche Zentrum für Luft- und Raumfahrt (DLR) hat in einem rund zweiwöchigen Standschwingungsversuch bis Anfang April das Strukturverhalten des Leichtbaufliegers untersucht. Damit erhalten die Solarflugpioniere aus der Schweiz wertvolle Informationen über das zukünftige Flugverhalten ihres Prototyps. Ein wichtiger Schritt für den Flug um die Welt. (more…)

Images from NASA Mars Rover Include Bright Spots

By Guest PostApril 10, 2014Sciencegale crater, image, justin maki, life changing, mars rover, mia kim, micro volunteering, mount sharp, NASA, navigation camera, slope

Images taken by NASA’s Curiosity Mars rover on April 2 and April 3 include bright spots, which might be due to the sun glinting off a rock or cosmic rays striking the camera’s detector.

The image from April 3, from Curiosity’s Navigation Camera, is online at: https://www.jpl.nasa.gov/spaceimages/details.php?id=PIA18077 (more…)

How (and when) Earth got its plated shell

By Guest PostApril 10, 2014Scienceauslaufprodukt, bruno abegg, climate, david bercovici, earth, earthquake, extreme wetterlagen, hohe kosten, kunstschnee, planet, unter druck, volcanic eruptions

New Yale-led research suggests how and when Earth came to develop one of its most distinct features — rigid tectonic plates — and why Venus, Earth’s twin-like neighbor, never has.

“We think it all comes down to the behavior of tiny grains of minerals within rocks,” said Yale geophysicist David Bercovici, lead author of research published online April 6 in the journal Nature. (more…)

Sentinel-1A: Start in eine neue Ära in der Erdbeobachtung

By Guest PostApril 8, 2014Science3rfp, banana lectin, banlec, called h84t, david markovitz, dlr, dna untersuchung, engineered from, esa, hans joachim gabius, johann dietrich woerner, katrin koch, katze, klaus schwenk, protein data bank, radhika nagpal, scott powell, sugar code

Hochwasserereignisse kartieren, Ölfilme auf den Ozeanen beobachten, die Eisausbreitung auf dem Meer erkennen und Bodenbewegungen millimetergenau vermessen – das sind nur einige der Aufgaben von Sentinel-1A, dem neuen Flaggschiff in der europäischen Erdbeobachtung. Der vier Meter hohe, zweieinhalb Meter breite und rund 2,3 Tonnen schwere Satellit ist am 3. April 2014 um 23.02 Mitteleuropäischer Sommerzeit (3. April 2014, 18.02 Uhr Ortszeit) der mit einer Sojus-Trägerrakete vom europäischen Raumfahrtzentrum in Kourou (Französisch-Guyana) ins All gestartet. Mit Sentinel-1A beginnt auch das Erdbeobachtungsprogramm Copernicus der Europäischen Union (EU) und der Europäischen Weltraumorganisation (ESA). Der ESA-Teil des Programms wird zu einem Drittel vom DLR Raumfahrtmanagement mit Mitteln der Bundesregierung finanziert. (more…)

NASA Space Assets Detect Ocean inside Saturn Moon

By Guest PostApril 8, 2014Sciencecassini, chris reid, deep space network, extraterrestrial microbes, iain couzin, linda spilker, matthew lutz, NASA, ocean, radio signal, rome, sapienza university, saturn moon, solar system, Space

NASA’s Cassini spacecraft and Deep Space Network have uncovered evidence Saturn’s moon Enceladus harbors a large underground ocean of liquid water, furthering scientific interest in the moon as a potential home to extraterrestrial microbes.

Researchers theorized the presence of an interior reservoir of water in 2005 when Cassini discovered water vapor and ice spewing from vents near the moon’s south pole. The new data provide the first geophysical measurements of the internal structure of Enceladus, consistent with the existence of a hidden ocean inside the moon. Findings from the gravity measurements are in the Friday, April 4 edition of the journal Science. (more…)

Possible evidence for dark matter particle presented at UCLA physics symposium

By Guest PostApril 5, 2014Sciencedark matter, dark matter particle, mass of galaxies, mass of universe, ordinary matter

Dark matter, the mysterious substance estimated to make up approximately more than one-quarter of the mass of the universe, is crucial to the formation of galaxies, stars and even life but has so far eluded direct observation.
(more…)

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