Science Simplified!

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Comment by Dr. Krishna Kumari Challa on October 4, 2014 at 6:11am

Comment by Dr. Krishna Kumari Challa on October 4, 2014 at 6:09am

Comment by Dr. Krishna Kumari Challa on October 2, 2014 at 7:52am

Lower IQ in Children Linked to Chemical in Water
Babies born to mothers with high levels of perchlorate during their first trimester are more likely to have lower IQs later in life, according to a new study
Maternal perchlorate levels in women with borderline thyroid function during pregnancy and the cognitive development of their offspring; Data from the Controlled Antenatal Thyroid Study.
http://www.ncbi.nlm.nih.gov/pubmed/25057878

Comment by Dr. Krishna Kumari Challa on October 2, 2014 at 5:19am

Cancer: How the immune system spots tumors
The receptor protein Dectin-1 recognizes structures found on cancerous cells, and then triggers an anti-tumor immune response. http://elifesciences.org/content/3/e04476#sthash.I8siNatR.dpuf

Comment by Dr. Krishna Kumari Challa on October 1, 2014 at 9:22am

Automating Scientific Discovery
The power of computers to juggle vast quantities of data has proved invaluable to science. In the early days, machines performed calculations that would have taken humans far too long to perform by hand. More recently, data mining has found relationships that were not known to exist—noticing, for instance, a correlation between use of a painkiller and incidence of heart attacks. Now some computer scientists are working on the next logical step—teaching machines to run experiments, make inferences from the data, and use the results to perform new experiments. In essence, they wish to automate the scientific process.

One team of researchers, from Cornell and Vanderbilt universities and CFD Research Corporation, took a significant step in that direction when they reported last year that a program of theirs had been able to solve a complex biological problem. They focused on glycolysis, the metabolic process by which cells—yeast, in this case—break down sugars to produce energy. The team fed their algorithm with experimental data about yeast metabolism, along with theoretical models in the form of sets of equations that could fit the data.

The team seeded the program with approximately 1,000 equations, all of which had the correct mathematical syntax but were otherwise random. The computer changed and recombined the equations and ranked the results according to which produced answers that fit the data—an evolutionary technique that has been used since the early 1990s. The key step, explains Hod Lipson, associate professor of computing and information science at Cornell, was to not only rank how the equations fit the data at any given point in the dataset, but also at points where competing models disagreed.
Read more here:
http://cacm.acm.org/magazines/2012/5/148614-automating-scientific-d...

Comment by Dr. Krishna Kumari Challa on October 1, 2014 at 9:09am

Higgs Boson to the World Wide Web: 7 Big Discoveries Made at CERN
http://news.yahoo.com/higgs-boson-world-wide-7-big-discoveries-made...

Comment by Dr. Krishna Kumari Challa on October 1, 2014 at 6:16am

The Science Of Blue Light And Why You Maybe Can't Sleep At Night
https://www.upworthy.com/the-science-of-blue-light-and-why-you-mayb...

Comment by Dr. Krishna Kumari Challa on October 1, 2014 at 6:09am

Comment by Dr. Krishna Kumari Challa on October 1, 2014 at 5:56am

Comment by Dr. Krishna Kumari Challa on September 30, 2014 at 6:04am

Cold Atom Laboratory Chills Atoms to New Lows
Nasa's Cold Atom Laboratory (CAL) mission has succeeded in producing a state of matter known as a Bose-Einstein condensate, a key breakthrough for the instrument leading up to its debut on the International Space Station in late 2016.
According to Nasa, a Bose-Einstein condensate (BEC) is a collection of atoms in a dilute gas that have been lowered to extremely cold temperatures and all occupy the same quantum state, in which all of the atoms have the same energy levels. At a critical temperature, atoms begin to coalesce, overlap and become synchronized. The resulting condensate is a new state of matter that behaves like a giant — by atomic standards — wave.
"CAL's ground testbed is the coolest spot at Nasa's Jet Propulsion Laboratory at 200 nano-Kelvin (200 billionths of 1 Kelvin)," CAL Project Scientist Rob Thompson at JPL in Pasadena, California said. "Achieving Bose-Einstein condensation in our prototype hardware is a crucial step for the mission."
While so far, the Cold Atom Laboratory researchers have created Bose-Einstein condensates with rubidium atoms, eventually they will also add in potassium. The behavior of two condensates mixing together will be fascinating for physicists to observe, especially in space.

Besides merely creating Bose-Einstein condensates, CAL provides a suite of tools to manipulate and probe these quantum gases in a variety of ways. It has a unique role as a facility for the atomic, molecular and optical physics community to study cold atomic physics in microgravity, said David Aveline of JPL, CAL ground testbed lead.

"Instead of a state-of-the-art telescope looking outward into the cosmos, CAL will look inward, exploring physics at the atomic scale".

http://www.jpl.nasa.gov/news/news.php?release=2014-325

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