Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 Internet speed test! ×

Submission + - New Advance Confines GMOs To The Lab Instead Of Living In The Wild

BarbaraHudson writes: from the what-could-possibly-go-wrong dept. In Jurassic Park, scientists tweak dinosaur DNA so that the dinosaurs were lysine-deficient in order to keep them from spreading in the wild. Scientists have taken this one step further as a way to keep genetically modified E. coli from surviving outside the lab. In modifying the bacteria's DNA to thwart escape, two teams altered the genetic code to require amino acids not found in nature. One team modified the genes that coded for proteins crucial to cell functions so that that produced proteins required the presence of the synthetic amino acid in the protein itself. The other team focused on 22 genes deemed essential to a bacterial cell's functions and tied the genes' expression to the presence of synthetic amino acids. For the bacteria to survive, these synthetic amino acids had to be present in the medium on which the bacteria fed. In both cases, the number of escapees was so small as to be undetectable.

Submission + - Listening in on Brain Function with NeuroGrid

Chipmunk100 writes: Researchers report the development of a neural interface array — the NeuroGrid to record brain activity without penetrating the brain surface.Typically, we listen to neuronal communication in animals by sampling chemical transmission in the fluid surrounding cells with dialysis probes, or with other types of probes that either translate chemical signaling into electrical current or directly record electrical current. Some probes measure with low spatial resolution, such as a region that contains many neurons. Other techniques, such as patch clamp, measure activity in single neurons but give little information about the behavior of neuronal populations. NeuroGrid is made from an organic polymer material that conducts both ionic and electronic current and limits the electrochemical impedance that more strongly effects other types of probes. NeuroGrid lays on the surface of the brain and conforms exquisitely to its contours.

Comment Re:Very admirable - two more cents (Score 1) 206

I think some of us in this thread underestimate the Chinese economy. A good proportion of the Chinese are affluent and they can afford to use, and they do use the high speed rail system. Shanghai-Beijing route is just few hours by high speed rail and a great convenience. In addition, the way they moderate traffic in cities by heavily subsidizing buses (city bus ride in Beijing cost only 2 yuan) help them save a lot of gas and road space, and very helpful for the low income. We, in the US, have the idea that everything must be privatized and must run for a profit. Certain things just dont work like that.

Comment Very admirable (Score 5, Interesting) 206

For those of you who have not been to China, what China does in terms of infrastructure projects is quite laudable. For a population of that size and country of that size, they need such projects for faster development. In the US, we are more interested in political scoring than building infrastructure or other developmental projects. Is it a sign of decay for us?

Submission + - Relieve stress and regain fertility

Chipmunk100 writes: UC Berkeley researchers report that blocking the gene for the hormone gonadotropin inhibitory hormone (GnIh), could help women overcome the negative reproductive consequences of stress. According to the press release, the findings will appear in the Jan. 13 issue of the journal eLife. "A lot of wild birds and vertebrates won't breed in captivity in part, we think, because of chronic low-level stress," said the lead author. "Just a chronic slight elevation in glucocorticoid stress hormones might influence the GnIH system and inhibit reproduction sufficiently to stop females from ovulating properly.

Submission + - Platelet-like nanoparticles that can do more than clot blood (ucsb.edu)

Chipmunk100 writes: UC Santa Barbara researchers have turned to the human body’s own mechanisms for inspiration in dealing with the necessary and complicated process of coagulation. By creating nanoparticles that mimic the shape, flexibility and surface biology of the body’s own platelets, they are able to accelerate natural healing processes while opening the door to therapies and treatments that can be customized to specific patient needs.

Submission + - Brain to Brain communication over the internet (sciguru.org)

Chipmunk100 writes: Imagine if we could transfer complicated knowledge from the brain of a teacher to a student without having to find the right words? A research article was recently published in PloS ONE on the first safe and non-invasive method of decoding intentions from a human sender and transferring them to a human receiver over the internet. Over the course of three months, three pairs of participants completed brain-to-brain interface experiments. Communication between sender and receiver were tested by their ability to collaborate in the video game task of firing a cannon to destroy a rocket before it reaches the city, while sitting in different buildings half a mile apart. Results varied between participant pairs which were successful 83.3%, 25.0% and 37.5% of the time.

Comment Hype or real? (Score 3, Interesting) 58

How do these particles avoid gut enzymes, once in the blood how do these particles avoid phagocytosis by macrophages, how can you expect that magnetic dragging of a number of these particles will not be deleterious, for example some of these got into cellular organelles being forcefully pulled out through their membranes etc. Either it is crazy or there is something ingenious about it.

Submission + - Location of spilled oil from 2010 Deepwater Horizon event found (ucsb.edu)

Chipmunk100 writes: A study published in the journal Proceedings of the National Academy of Sciences claims to have identified the location of two million barrels of submerged oil thought to be trapped in the deep ocean following the 2010 Deepwater Horizon spill. By analyzing data from more than 3,000 samples collected at 534 locations over 12 expeditions, they identified a 1,250-square-mile patch of the deep sea floor upon which 2 to 16 percent of the discharged oil was deposited. The fallout of oil to the sea floor created thin deposits most intensive to the southwest of the Macondo well. The oil was most concentrated within the top half inch of the sea floor and was patchy even at the scale of a few feet.

Submission + - Green house gases or the ocean important in climate change (rutgers.edu)

Chipmunk100 writes: Most of the concerns about climate change have focused on the amount of greenhouse gases that have been released into the atmosphere. Researchers have found that circulation of the ocean plays an equally important role in regulating the earth’s climate. The study results were published the journal Science (pay wall). “Our study suggests that changes in the storage of heat in the deep ocean could be as important to climate change as other hypotheses – tectonic activity or a drop in the carbon dioxide level – and likely led to one of the major climate transitions of the past 30 million years," said one of the authors.

Submission + - Glaciers in the Karakoram mountains do not melt - reason found (princeton.edu) 2

Chipmunk100 writes: In a phenomenon known as the "Karakoram anomaly," glaciers in the Karakoram mountains, a range within the Himalayas, have remained stable and even increased in mass while many glaciers nearby — and worldwide — have receded during the past 150 years, particularly in recent decades. Researchers report in the journal Nature Geoscience that the ice is sustained by a unique and localized seasonal pattern that keeps the mountain range relatively cold and dry during the summer.

Slashdot Top Deals

Real Programmers don't write in PL/I. PL/I is for programmers who can't decide whether to write in COBOL or FORTRAN.