Guest Post – Page 432 – Shamskm: A site to exchange knowledge and solutions

Researchers Describe Oxygen’s Different Shapes

By Guest PostApril 1, 2014Scienceaha moment, allan la, carbon 12, dario sanches, dean lee, evgeny epelbaum, helium 4 nuclei, hermann krebs, hour of code, north Carolina, oxygen, oxygen 16, state university, timo laehde

Oxygen-16, one of the key elements of life on earth, is produced by a series of reactions inside of red giant stars. Now a team of physicists, including one from North Carolina State University, has revealed how the element’s nuclear shape changes depending on its state, even though other attributes such as spin and parity don’t appear to differ. Their findings may shed light on how oxygen is produced.

Carbon and oxygen are formed when helium burns inside of red giant stars. Carbon-12 forms when three helium-4 nuclei combine in a very specific way (called the triple alpha process), and oxygen-16 is the combination of a carbon-12 and another helium-4 nucleus. (more…)

Gericht legt Japans Walfangflotte an die Kette

By Guest PostMarch 31, 2014Naturebowhead whales, bruellaffen, crusty meals, gericht, gerichtshof, güterabwaegung, jacob dunn, Japan, kleine hoden, rip van winkle, risiko, sexuelle selektion, tecumseh fitch, tiefe stimme, tim packeiser, trent northen, walschutz, wwf deutschland

WWF begrüßt historisches Urteil des Internationalen Gerichtshof zum Walschutz

Japan muss seine umstrittene Waljagd im Südpolarmeer beenden. Das japanische Programm verstoße gegen das internationale Walfangmoratorium, das kommerziellen Walfang verbietet, und erfülle keine wissenschaftlichen Forschungszwecke. So entschied heute der Internationale Gerichtshof in Den Haag. Australien hatte 2010 vor dem UN-Gericht Klage gegen Japan erhoben. (more…)

‘Melbourne Shuffle’ secures cloud data

By Guest PostMarch 31, 2014Technologyamazon web services, arxiv, brown university, cloud computing, cloud data, data access, dirty, elektroauto, eli upfal, encryption, eu projekt, pattern, verkehrsforscher, verkehrssystem

Encryption might not be enough for all that data stored in the cloud. An analysis of usage patterns — which files are accessed and when — can give away secrets as well. Computer scientists at Brown have developed an algorithm to sweep away those digital footprints. It’s a complicated series of dance-like moves they call the Melbourne Shuffle.

PROVIDENCE, R.I. [Brown University] — To keep data safe in the cloud, a group of computer scientists suggests doing the Melbourne Shuffle. (more…)

Physik-Wettbewerb: Schülerforschungszentrum Nordhessen richtet Deutschlandfinale aus

By Guest PostMarch 31, 2014Education, Sciencealex thornton, angus deaton, anne case, elena zwirner, kassel, oxycontin for kids, quiet epidemic, robotaxi, stefan trommer

Wie funktioniert die perfekte Wasserbombe oder ein Kraftwerk aus Teelichtern? Jugendliche lösen beim bundesweiten Physik-Wettbewerb anspruchsvolle Rätsel – experimentell und theoretisch.

Im Finale vom 11. bis 13. April 2014 stellen sie ihre Lösungen in englischsprachigen Präsentationen und Diskussionen vor. Austragungsort ist das Schülerforschungszentrum Nordhessen in Kassel. Das Turnier dient zugleich als Vorentscheid für den internationalen Physik-Weltcup. (more…)

Scientists build thinnest-possible LEDs to be stronger, more energy efficient

By Guest PostMarch 31, 2014Sciencebekaempfung der korruption, cold period, cultural chasm, david cobden, energy-efficient, Germany, graphene, juristin, karin seyfried, korruption, korruptionsstrafrecht, leds, one atom, problemfall, raf rios, rice basket, terry quinn, university of manchester, university of washington

Most modern electronics, from flat-screen TVs and smartphones to wearable technologies and computer monitors, use tiny light-emitting diodes, or LEDs. These LEDs are based off of semiconductors that emit light with the movement of electrons. As devices get smaller and faster, there is more demand for such semiconductors that are tinier, stronger and more energy efficient.

University of Washington scientists have built the thinnest-known LED that can be used as a source of light energy in electronics. The LED is based off of two-dimensional, flexible semiconductors, making it possible to stack or use in much smaller and more diverse applications than current technology allows. (more…)

For Men of Color, High Academic Motivation Does Not Bring Academic Success

By Guest PostMarch 30, 2014Generalacademic success, american society, austin, black, cryptodira, halsberger schildkroeten, hispanics, jehol gruppe, kreidezeit, marton rabi, schildkroete, stammbaum, university of texas, xiaochelys ningchengensis

AUSTIN, Texas — Despite higher levels of engagement in the community college experience — from rarely skipping classes to accessing tutoring services more frequently — male students of color have lower academic outcomes than White male students who are significantly less engaged, according to a recent University of Texas at Austin report.

“Aspirations to Achievement: Men of Color and Community Colleges” was produced by the College of Education’s Center for Community College Student Engagement (CCCSE). It is based on responses from more than 453,000 students nationwide to the Community College Survey of Student Engagement. (more…)

Sticky composites

By Guest PostMarch 30, 2014Sciencecarbon nanotube macrofilms, carbon nanotubes, lithium ion batteries, new battery technology, sticky conductive material

New battery technology employs multifunctional materials

Lithium-ion batteries power a vast array of modern devices, from cell phones, laptops, and laser pointers to thermometers, hearing aids, and pacemakers. The electrodes in these batteries typically comprise three components: active materials, conductive additives, and binders. (more…)

„Im Zweifel für den Zweifel“? Internet und Freiheit

By Guest PostMarch 30, 2014Politicsbernsteinfund, digitale agenda, florian schmitt, freiheit, internet, kreide, melissa farley, neue muecken, nordic model, open source software, regulating prostitution, sex buyers

Der Zweifel ist nicht erst seit Descartes eine Triebfeder der Moderne. Strittig ist nur seit je her, welcher der richtige Zweifel ist. Eine genaue Prüfung und Abwägung ist unabdingbar, so dass der Zweifel ein elastischer Zweifel bleibt: „Nur nicht verzweifeln!“ Auch und gerade im Umgang mit dem Internet. Dieses war bislang ein Medium, das auf einer freiheitlichen Idee fußte – nie war dieser Impetus mehr bedroht als heute. Gegen diese Bedrohungen regt sich kein signifikanter Protest. Ist also das freie Internet nur noch eine Illusion? Warum es aber nach wie vor gilt, um die Freiheit zu streiten und zu kämpfen, lesen Sie in unserer Presseschau.

Author Archives: Guest Post