martes, 15 de febrero de 2011

Space & Earth Updates: Chemistry news - Physics news - Astronomy news & more...

Space & Earth Updates: Chemistry news - Physics news - Astronomy news & more...

 

Other Sciences news


Marriage not always about romance
“Love and marriage, go together like the horse and carriage.”
Inputs' that boost Latino students' test scores revealed in study
Latina/o students' math and reading Texas Assessment of Knowledge and Skills (TAKS) test scores improve when urban schools increase operating expenditures, decrease student-teacher ratios and increase the number of bilingual certified teachers, says a recent study from The University of Texas at Austin's College of Education.



What romance novels say about society: A Valnetine's Day Q & A
University of Toronto anthropologist Ivan Kalmar doesn't research romance novels himself, but he is interested in the relationship between theory and everyday life, and encourages his students to turn a critical eye on the aspects of everyday life they might take for granted. In honor of Valentine’s Day, we spoke to him about romance novels.



Archaeologists find hidden African side to noted 1780s Md. building
One of North America's most famous Revolutionary-era buildings – a lone-surviving testament to an Enlightenment ideal – has a hidden West African face, University of Maryland archaeologists have discovered.



The UK is a nation of happy couples
Researchers at the Institute for Social and Economic Research asked both individuals in the couple to rate their happiness on a seven point scale; from the lowest score of 'extremely unhappy' to the middle point of 'happy', the highest point being 'perfect'. The self-reported happiness rating revealed that 90 percent of married women and 88 percent of cohabiting women are happy in their relationships. Ninety-three percent of married men and 92 percent of cohabiting men said they were happy in their relationship.



A third of us have used dating websites: study
The Oxford Internet Institute (OII) conducted an online questionnaire with 12,000 couples from 18 countries, all of whom had regular access to the internet. They were asked a series of questions about whether they had visited dating websites, other online services and where else they might go looking for a partner. The questions related to the period 1997 to 2009.



Total cooperation among people is not viable
A situation where a majority of people cooperate never happens. This is due to the fact that a significant number of individuals never cooperate and if they do it is in response to the decision of their neighbors to cooperate or not, or a result of their mood at the time, according to an experimental study by researchers at Universidad Carlos III de Madrid, Spain.



Playtime helps bind generations
A new study has confirmed an old adage: A family that plays together stays together. Researchers from Concordia University and Wilfrid Laurier University examined the ways grandparents can maintain close ties with their adult grandchildren. True to the old maxim, recreation emerged as the glue sealing intergenerational bonds.



Obama budget would boost science, health research
Health and science research would get a boost under the 2012 budget proposed Monday by US President Barack Obama, even though the Republican-controlled Congress aims to trim such spending.



Study shows year-end test scores significantly improved in schools using Web-based tutor
Year-end test scores of Massachusetts middle school students whose teachers used a Web-based tutoring platform called ASSISTments as a central part of their mathematics instruction were significantly better than those of students whose teachers did not use the platform, according to a recent study published in the Journal of Educational Computing Research.



Guitar heroes: When the magic transfers from rock stars to instruments
Budding guitarists seek the magical powers of rock hero instruments, according to a new study in the Journal of Consumer Research.



Probing Question: How did Valentine's Day start?
Never mind the 160 million greeting cards that will be purchased for Valentine's Day this year. Forget about the 35 million heart-shaped boxes of chocolates that will pass from giver to recipient. Long before today's modern commercialized frenzy, Valentine's Day was, well, just another day to commemorate a saint. In Catholic tradition practically every day of the year is a saint's day, so how did Saint Valentine -- instead of, say, Saint Sigfrid, whose day is Feb. 15 -- become associated with romantic love?



George Clooney or Saddam Hussein? Why do consumers pay for celebrity possessions?
A new study in the Journal of Consumer Research sheds some light into why someone would pay $48,875 for a tape measure that had belonged to Jackie Kennedy or $3,300 for Bernie Madoff's footstool.



Pay attention! Many consumers believe 36 months is longer than 3 years
Consumers often have a distorted view when they compare information that involves numbers, according to a new study in the Journal of Consumer Research.



Not actually bad at math or auto repair? Women fear being stereotyped by male service providers
Women prefer female service providers in situations where they might fall prey to stereotypes about their math and science abilities, according to a new study in the Journal of Consumer Research.



Mummies' false toes helped ancient Egyptians walk
Two artificial big toes – one found attached to the foot of an ancient Egyptian mummy – may have been the world's earliest functional prosthetic body parts, says the scientist who tested replicas on volunteers.



Ancient Mesoamerican sculpture uncovered in southern Mexico
(PhysOrg.com) -- With one arm raised and a determined scowl, the figure looks ready to march right off his carved tablet and into the history books. If only we knew who he was - corn god? Tribal chief? Sacred priest?



Earliest humans not so different from us, research suggests
That human evolution follows a progressive trajectory is one of the most deeply-entrenched assumptions about our species. This assumption is often expressed in popular media by showing cavemen speaking in grunts and monosyllables (the GEICO Cavemen being a notable exception). But is this assumption correct? Were the earliest humans significantly different from us?

 

 

Nanotechnology news


Tracking neural stem cells
(PhysOrg.com) -- Magnetic nanoparticles could be used to track neural stem cells after a transplant in order to monitor how the cells heal spinal injuries, say UCL scientsts.



Researchers control conduction, surface states in topological insulator nanoribbons
In recent years, topological insulators have become one of the hottest topics in physics. These new materials act as both insulators and conductors, with their interior preventing the flow of electrical currents while their edges or surfaces allow the movement of a charge.

 

 

Physics news


The physics of a sustainable society revolution
Faced with global issues concerning the environment and energy and the need to build a sustainable society, we must develop new technologies for generating and using energy efficiently. Yoshinori Tokura, group director of the Correlated Electron Research Group and the Cross-correlated Materials Research Group at RIKEN’s Advanced Science Institute, Japan, and his colleagues are working to develop electronic technologies based on new principles to allow information processing to be performed with minimal power consumption and more efficient conversion of light and heat to electrical power.



The heaviest known antimatter
When an international team of scientists working at the Relativistic Heavy Ion Collider (RHIC) announced the discovery of the most massive antinucleus to date — and the first containing an anti-strange quark — it marked the first entry below the plane of the classic Periodic Table of Elements, and sparked enormous interest worldwide. Dr. Zhangbu Xu, a physicist at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory, where the 2.4-mile circular “atom smasher” is located, will share this discovery with a wider audience at this year’s meeting of the American Association for the Advancement of Science (AAAS) on Friday, February 18, 2011.



Message in a wobble: Black holes send memos in light
Imagine a spinning black hole so colossal and so powerful that it kicks photons, the basic units of light, and sends them careening thousands of light years through space. Some of the photons make it to Earth. Scientists are announcing in the journal Nature Physics today that those well-traveled photons still carry the signature of that colossal jolt, as a distortion in the way they move. The disruption is like a long-distance missive from the black hole itself, containing information about its size and the speed of its spin.



Physicists isolate bound states in graphene-superconductor junctions
(PhysOrg.com) -- Illinois researchers have documented the first observations of some unusual physics when two prominent electric materials are connected: superconductors and graphene.



Ground-based lasers vie with satellites to map Earth's magnetic field
(PhysOrg.com) -- Mapping the Earth's magnetic field – to find oil, track storms or probe the planet's interior – typically requires expensive satellites.

 

 

Space & Earth news


Arctic adventurer studies changing atmosphere
(PhysOrg.com) -- The average temperature is -50 F, and the sun has just begun to make an appearance, but University of Idaho doctoral student Chris Cox doesn’t really mind: it’s the chance of a lifetime to study weather patterns in Greenland.



A visual feast of galaxies
A unique new atlas of 35 galaxies has been compiled by Swinburne astronomer Dr. Glen Mackie.



Russia says foreign power may have caused spy satellite loss
The Russian space agency suggested Monday that a foreign power may have been behind the space accident that disabled one of the country's most modern military satellites earlier this month.



Acid oceans demand greater reef care
The more humanity acidifies and warms the world's oceans with carbon emissions, the harder we will have to work to save our coral reefs.



Garbage floats off Greek island as landfill collapses
Waters off the Greek island of Andros were choked with garbage on Monday after a landfill was flushed into the sea in an environmental disaster indicative of Greece's chronic waste management woes.



SDO celebrates one year anniversary
(PhysOrg.com) -- On February 11, 2010, at 10:23 in the morning, NASA's Solar Dynamics Observatory (SDO) launched into space on an Atlas rocket from Cape Canaveral. A year later, SDO has sent back millions of stunning images of the sun and a host of new data to help us understand the complex star at the heart of our solar system.



Obama: Five-year freeze on NASA budget
President Barack Obama on Monday proposed reining in expenses at NASA, sending a 2012 budget blueprint to Congress that calls for a five-year freeze on spending levels at the US space agency.



NASA satellites see Cyclone Bingiza move across northern Madagascar
Tropical Cyclone Bingiza has made landfall in northeastern Madagascar, and NASA's Aqua and Terra satellites captured visible infrared satellite data of the storm's progression over the weekend, revealing the power behind the storm.



NASA craft readies for Valentine comet encounter
A NASA spacecraft is ready to get up close and personal with its comet sweetheart.



The two faces of Tempel 1
(PhysOrg.com) -- Just one year before its Feb. 14 encounter with comet Tempel 1, NASA's Stardust spacecraft performed the largest rocket burn of its extended life. With the spacecraft on the opposite side of the solar system and beyond the orbit of Mars, the comet hunter's rockets fired for 22 minutes and 53 seconds, changing the spacecraft's speed by 24 meters per second (54 mph). The burn was a result of an international effort to determine something that could very well be indeterminate -- which face of Tempel 1 will be facing the sun when Stardust hurtles by tonight, Feb. 14, the evening of Valentine's Day in the United States.



Experiment volunteers 'walk on Mars' (Images)
Two volunteers cut off from the rest world for eight months stepped out on a mock-up of Mars on Monday, reaching the dramatic half-way point of their experimental "voyage" to the Red Planet.



How to spot a spinning black hole: Twisted space-time should be visible from Earth, say researchers
(PhysOrg.com) -- An international group of astronomers and physicists – including Dr Gabriel Molina-Terriza of Macquarie University Sydney has found that rotating black holes leave an imprint on passing radiation that ought to be detectable using today’s most sensitive radio telescopes. Observing this signature, they say, could tell us more about how galaxies evolve and provide a further test of Einstein’s general theory of relativity.



Solar Dynamics Observatory sundog mystery
]NASA's Solar Dynamics Observatory (SDO), best known for cutting-edge images of the sun, has made a discovery right here on Earth.



More deep-sea vents discovered
Scientists aboard the Royal Research Ship James Cook have discovered a new set of deep-sea volcanic vents in the chilly waters of the Southern Ocean. The discovery is the fourth made by the research team in three years, which suggests that deep-sea vents may be more common in our oceans than previously thought.



Worldwide sulfur emissions rose between 2000-2005, after decade of decline
A new analysis of sulfur emissions appearing in the journal Atmospheric Chemistry and Physics shows that after declining for a decade, worldwide emissions rose again in 2000 due largely to international shipping and a growing Chinese economy. An accurate read on sulfur emissions will help researchers predict future changes in climate and determine present day effects on the atmosphere, health and the environment.



World phosphorous use crosses critical threshold
(PhysOrg.com) -- Recalculating the global use of phosphorous, a fertilizer linchpin of modern agriculture, a team of researchers warns that the world's stocks may soon be in short supply and that overuse in the industrialized world has become a leading cause of the pollution of lakes, rivers and streams.

 

Chemistry news


Hershey scientists improve methods for analysis of healthful cocoa compounds
Two scientific publications report on improved methods for determining the amounts of flavanol antioxidants in cocoa and chocolate. The research, sponsored by The Hershey Center for Health and Nutrition, was a collaboration between scientists at The Hershey Company and other scientific laboratories.



Valentine's Day can be scientific, romantic
Who said there is no romance in science? Well there is, and it comes in many different chemical compounds!



Researchers study flu proteins in-depth to identify virus vulnerabilities
Each year, people everywhere prepare for flu season. Some will get the flu vaccine, some take vitamin supplements, some launch a vigorous handwashing campaign, while others take an entirely different approach: nuclear magnetic resonance (NMR).



X-rays show why van Gogh paintings lose their shine
Scientists using synchrotron X-rays have identified the chemical reaction in two van Gogh paintings that alters originally bright yellow colors into brown shades.



Jewel-toned organic phosphorescent crystals: A new class of light-emitting material
(PhysOrg.com) -- Pure organic compounds that glow in jewel tones could potentially lead to cheaper, more efficient and flexible display screens, among other applications.




Provided by PhysOrg.com