Tuesday, September 11, 2007

Burning saltwater for fuel

Apparently, it's real. Discovered accidentally by John Kanzius while trying to desalinate seawater and find a cure for cancer, it has since been confirmed by chemist and water structure expert Dr. Rustum Roy of Penn State University.

From the post-gazette:

Dr. Roy said the salt water isn't burning per se, despite appearances. The radio frequency actually weakens bonds holding together the constituents of salt water -- sodium chloride, hydrogen and oxygen -- and releases the hydrogen, which, once ignited, burns continuously when exposed to the RF energy field. Mr. Kanzius said an independent source measured the flame's temperature, which exceeds 3,000 degrees Fahrenheit, reflecting an enormous energy output...As such, Dr. Roy, a founding member of the Materials Research Laboratory and expert in water structure, said Mr. Kanzius' discovery represents "the most remarkable in water science in 100 years."

Hopefully this could break us of the dependence on oil, without depleting our oceans too much. You never know, this could be the solution to the rising sea levels from global warming!

Check out the TV segment to watch it burn.

Diagnosing genetic conditions by analyzing your face

From Science Daily:
The general public easily recognises the faces of people with Down’s syndrome, but there are over 700 genetic conditions where there are characteristic facial features: the eyes may be set further apart than usual, the nose shorter and the ears set lower down on the head along with many other possible permutations.
Clinical geneticists are using non-invasive 3D photography and novel analysis techniques are set to make the facial recognition easier.
Professor Peter Hammond from the UCL Institute of Child Health has developed new computer software that compares the faces of undiagnosed children with those with a diagnosed condition that also affects the development of their face, with a 90 per cent success rate...extensive collections of 3D face images of children and adults with the same genetic condition had to be gathered, as well as controls or individuals with no known genetic condition. Each image contains 25,000 or so points on a face surface capturing even the most subtle contours in 3D. The images are then converted to a compact form that requires only a 100 or so numeric values to represent each face in the subsequent analysis.
A great way to narrow down the number of different genetic screening tests to run: Once the software has narrowed down conditions with similar facial features, molecular testing can then be used to confirm the diagnosis.

Friday, September 7, 2007

'Wiki City Rome', real time dynamic map

In the 'Wiki City Rome' project an MIT team will obtain data anonymously from cell phones and other devices to map Rome in real time. (Credit: Image / Kristian Kloeckl)

Very cool! Developed by MIT's SENSEable City Laboratory.

From Science Daily:
The project will debut Sept. 8 during Rome's "Notte Bianca" or white night, an all-night festival of events across the capital city. During that night, anyone with an Internet connection will be able to see a unique map of the Italian capital that shows the movements of crowds, event locations, the whereabouts of well-known Roman personalities, and the real-time position of city buses and trains.

This is a wonderfully powerful tool for providing real time information to plan your perfect evening: According to researcher Francesco Calabrese of SENSEable City Lab, a person could consult the map to find the most crowded place in Rome to drink an aperitivo - and then identify the least congested route by which to reach it.

However, I do get a little paranoid about other aspects of it: the whereabouts of well-known Roman personalities, as if the paparazzi didn't already have enough to do! I guess this would depend on how closely they will pinpoint people.

Thursday, September 6, 2007

Subscribe to comic books on your cell phone

Pic: Artist Steven Sanders holds a cell phone next to his computer screen at his office in Kansas City, Mo., Wednesday, Aug. 29, 2007. Sanders' is working to format comics for cell phones. (AP Photo/Orlin Wagner)

Thunder Road, pictured on the right, is the first comic book in the U.S. to be released exclusively on the cell phone.

There are a handful of traditional comic books that are also being released on a subscription basis. From physorg:
For $4.49 a month on Verizon, or $3.99 a month for AT&T and Sprint, subscribers can view nearly a dozen different traditional comic books. There's also a separate subscription service for Japanese comics called manga. The comic books range from well-known names like "Bone" and "Teenage Mutant Ninja Turtles," to up-and-coming books, such as crime noirish "Umbra" and Hindu folklore-inspired "Devi." The comics site adds new chapters or issues for each title every week.
To subscribe, check out: http://www.gocomics.com/

Increased suicide rate coincides with decreased antidepressant use?

So goes the headline. It's very difficult to determine causality for this sort of thing (ie. we can't conclude that decreased antidepressant use caused increase in suicides, since there are many other factors that lead someone to suicide), but there definitely seems to be a correlation that has been measured from multiple studies.

I'm just relieved that the study data support the current practice standards of using antidepressants for the depressed and suicidal (bipolar disorder is separate, and antidepressants are NOT recommended is those cases).

From sfgate:
In 2003 and 2004, the FDA issued a series of warnings that clinical trials had detected an increase in suicidal thinking among children and adolescents taking a class of antidepressants known as selective serotonin reuptake inhibitors (SSRIs), compared with those given sugar pills. In late 2004, the agency called for a "black box" warning on the drugs to call attention to the potential risk, and expanded it last December to include young adults.
The warnings led to a broad decline in SSRI prescriptions for all patients younger than 60, Gibbons said. Prescription rates continued to rise among those older than 60, and this was the only group in which suicides dropped between 2003 and 2004, his study found.
The study included the Netherlands, which saw a 22 percent decrease in antidepressant use between 2003 and 2005. The suicide rate among youngsters there increased 49 percent in that period.

Previous studies have shown that U.S. suicide rates are lower in counties where antidepressant use is higher, and a study in July of more than 200,000 depressed veterans found that those taking an antidepressant had one-third the risk of suicide than those who were not.

Wednesday, September 5, 2007

A good breakfast can help control your blood sugar all day!

From Science Daily:
"It is known that a carbohydrate-rich breakfast with low GI [glycemic index] can moderate increases in blood sugar after lunch. But my results show that low GI in combination with the right amount of so-called indigestible carbohydrates, that is, dietary fiber and resistant starch, can keep the blood-sugar level low for up to ten hours, which means until after dinner," says Anne Nilsson, a doctoral student at the Unit for Applied Nutrition and Food Chemistry and author of the dissertation.
Experiments also showed that the blood sugar increase following breakfast can be moderated in a similar way by eating the right grain products the night before.
Additionally, eating the 'right' grains can help decrease metabolic syndrome. This researcher also studied mental acuity and blood sugar levels after meals.
It turned out that subjects who had eaten low GI breakfasts could concentrate better and had a better working memory (a type of short-term memory) than the other group. These experiments also showed that healthy individuals with low glucose tolerance, that is with high rises in blood sugar than average following a meal, generally performed less well. "The findings indicate that people with great fluctuations in their levels of blood sugar run a greater risk of having a generally lower cognitive ability," says Anne Nilsson.
Apparently, the indigestible carbohydrates are the key to feeding the bacteria in the large intestine. This in turn ferments the carbohydrates into usable compenents like short chain fatty acids:
Anne Nilsson's studies show that components produced in the process of fermentation can enter the blood and favorably affect the regulation of blood sugar and the feeling of satiety, and they can help alleviate inflammatory conditions in the body, which in turn can entail a reduced risk of diabetes and cardiovascular diseases.

Tuesday, September 4, 2007

A treatment for dyslexia?

Using fMRI, researchers at UW's Learning Disabilities Center are studying brain connectivity timing for dyslexia.

Science Daily: "Some brain regions are too strongly connected functionally in children with dyslexia when they are deciding which sounds go with which letters," said Todd Richards, a UW neuroimaging scientist and lead author of a study published in the current issue of the Journal of Neurolinguistics. We had hints in previous studies that the ability to decode novel words improves when a specific brain region in the right hemisphere decreases in activation. This study suggests that the deactivation may result in a disconnection in time from the comparable region in the left hemisphere, which in turn leads to improved reading. Reading requires sequential as well as simultaneous processes."

So they studied a group of dyslexic kids, and a group of 'good readers'. Amazingly,

The children's brains were scanned and then those with dyslexia participated in a three-week program that taught the children the code for connecting letters and sounds with an emphasis on timing. Then the children's brains were scanned again.
Following the treatment, the fMRI scans showed that the patterns of temporal connectivity in brains of the dyslexic children had normalized and were similar to those of the good readers and spellers.


The study has shown these gains sustained for up to 2 years so far, but stresses this is not yet a cure for dyslexia. At least they're off to a good start.
How is this happening? They hypothesize:

"These results might mean that after special teaching the children with dyslexia activated letters in written words first and then switched to sounds in spoken words rather than simultaneously activating both letters and sounds," said Richards. "The overconnection between the language conductor and working memory at the same time may be a signal that working memory is overtaxed. When language processing is more efficient after treatment, working memory does not have to work as hard.