Posts mit dem Label Science werden angezeigt. Alle Posts anzeigen
Posts mit dem Label Science werden angezeigt. Alle Posts anzeigen

Donnerstag, Januar 20, 2011

Mailonline: Best friends forever: It's all in our genes, say scientists

ou share the same sense of humour and like the same music but you may be even closer than you realise. Friendship is in our genes, scientists believe, with members of a group of pals sharing the some of same DNA.In other cases, friends have very different versions of the same gene, suggesting opposites do attract. [more...]

Montag, November 22, 2010

PC-WORLD: Wi-Fi Makes Trees Sick, Study Says

Radiation from Wi-Fi networks is harmful to trees, causing significant variations in growth, as well as bleeding and fissures in the bark, according to a recent study in the Netherlands.Radiation from Wi-Fi networks is harmful to trees, causing significant variations in growth, as well as bleeding and fissures in the bark, according to a recent study in the Netherlands. [mehr...]

Mittwoch, August 11, 2010

Wired: Russian Heat, Asian Floods May Be Linked

Russia’s killer heat wave and monster South Asian monsoon floods could be more than isolated examples of extreme weather. Though separated by a continent, they could be linked. Monsoon rains drive air upward, and that air has to come down somewhere. It usually comes down over the Mediterranean, producing the region’s hot, dry climate. This year, some of that air seems to have gone north to Russia. [more...]

Wired: Google Helps Find Simplest Solution to Rubik’s Cube

No matter how mixed-up it is, the Rubik’s Cube can be solved in 20 moves or fewer, say a team of researchers who used computer time donated by Google to run complex algorithms to prove it.That means all the 43,252,003,274,489,856,000 positions of the Cube require no more than 20 steps to get the Cube in shape. [more...]

Dienstag, Juni 22, 2010

Rheinischer Merkur: Psychotricks mit Vuvuzela



VON MARGIT MERTENS
Wenn Neurologen, Mathematiker oder Ökonomen rund um den Fußball forschen, liefert das überraschende wie skurrile Erkenntnisse: Die WM macht Menschen reicher und schwerer, während ein Spiel tatsächlich nur 55 Minuten dauert. [mehr...]


ORF Science

Donnerstag, März 25, 2010

NASA: Solar Cycle Prediction - Sonnen Zyklus Vorhersage

A solar flare observed in Dec. 2006 by NOAA's GOES-13 satellite


May 29, 2009: An international panel of experts led by NOAA and sponsored by NASA has released a new prediction for the next solar cycle. Solar Cycle 24 will peak, they say, in May 2013 with a below-average number of sunspots.

"If our prediction is correct, Solar Cycle 24 will have a peak sunspot number of 90, the lowest of any cycle since 1928 when Solar Cycle 16 peaked at 78," says panel chairman Doug Biesecker of the NOAA Space Weather Prediction Center.

 "Even a below-average cycle is capable of producing severe space weather," points out Biesecker. "The great geomagnetic storm of 1859, for instance, occurred during a solar cycle of about the same size we’re predicting for 2013."  more...

Samstag, Februar 20, 2010

CubeStormer - Roboter löst Rubik's Cube in max. 12 Sekunden


The Worlds Fastest Lego Mindstorms RCX Speedcubing Robot. Built entirely from lego elements now scanning and solving any 3x3x3 Rubik's cube combination in under 12 seconds

Dienstag, Februar 09, 2010

Study: Formation of carcinogens indoors by surface-mediated reactions of nicotine with nitrous acid, leading to potential thirdhand smoke hazards - Studie: Nikonablagerungen in Innenräumen erzeugen bei Luftkontakt krebserregende Substanzen.


"Proceedings of the National Academy of Sciences"


This study shows that residual nicotine from tobacco smoke sorbed to indoor surfaces reacts with ambient nitrous acid (HONO) to form carcinogenic tobacco-specific nitrosamines (TSNAs). Substantial levels of TSNAs were measured on surfaces inside a smoker’s vehicle. more...

Montag, September 21, 2009

3sat-Nano: Störsender verhindern das Schließen von Autotüren. Der Fahrer sollte prüfen, ob sein Wagen verschlossen ist



Hintergrund:
„Ein 60-jähriger Berufsverbrecher soll per Funk versucht haben, Kö - Besucher in Düsseldorf daran zu hindern, ihre Limousinen abzuschließen. Polizisten erkannten den Mann: Er soll mit dieser Masche schon einmal im Jahr 2005 einen Schmuckhändler um Juwelen im Wert von einer Million Euro gebracht haben.“ (Zeitungsmeldungen)

Automatische Funkschließsysteme, wie zum Beispiel als Türöffnung im Auto verwendet, sind gegen Störungen deshalb anfällig, da sie sich in einem gleichberechtigten Frequenzband zum Beispiel 433 Mhz Bereich befinden. Auf dem Markt gibt es Handsprechfunkgeräte, die legal und gleichberechtigt in diesen Frequenzbereichen senden dürfen. Spezielle selbstgebaute Störsender können immer auf dementsprechenden Frequenzen stören.

Fernbedienungen von Autos können beeinflusst werden. Dafür ist es nicht erforderlich den Code der Fernbedienung zu knacken. Viel einfacher geht es mit einem Störsender. Der verhindert das Verschließen der Fahrzeuges, wenn der Fahrzeugbesitzer sein Fahrzeug mit seiner Fernbedienung schließen will, aber nicht darauf achtet, dass keine Rückmeldung, wie Blinken o. ähnliches erfolgt.

Movie/Beitrag on/auf 3Sat

Filmautor: Wolfgang Rathgeber

Donnerstag, Juni 11, 2009

WHO: Influenza pandemic alert raised to phase 6



11 June 2009 -- On the basis of available evidence and expert assessments of the evidence, the scientific criteria for an influenza pandemic have been met. The Director-General of WHO has therefore decided to raise the level of influenza pandemic alert from phase 5 to phase 6. "The world is now at the start of the 2009 influenza pandemic," she said at a press conference today.

Statement of Dr Margaret Chan
Director-General of the World Health Organization


Last update 47

What is Phase 6
Full cover
Press briefings

Robert Koch Institut Germany
Wir gegen Viren
German Mirror
BBC News

Mittwoch, Februar 11, 2009

ISS QSO WITH "Städtisches Gymnasium Herzogenrath, Herzogenrath, German" Sat (Feb 07) at 10:36 UTC - Callsign on earth DR0G and in space OR 4ISS


Sat (Feb 07) at 10:36 UTC ISS "International Space Shuttle" in QSO with "Städtisches Gymnasium Herzogenrath, Herzogenrath, Germany" Recorded by IW7DLE Mario in JN80XP, Brindisi, ITALY VHF 145.800 Mhz - FM

Stadtisches Gymnasium Herzogenrath ARISS Contact listening from Casale Monferrato (Italy)

February 7, 2008 10:36 UTC
Recorded from Casale Monferrato (Italy) JN45FD in School "Alighieri-Trevigi" preparing for a future direct ARISS contact with callsign IZ1PAY.
At the school IK1SLD, I1QEQ, IK1YFE, IW1BND and the cameraman IW1ANL