Monday, April 25, 2011

‘Time machine’ allows visual exploration of space and time

April 25, 2011 

Researchers at Carnegie Mellon University’s Robotics Institute have leveraged the latest browser technology to create GigaPan Time Machine.

The system enables viewers to explore gigapixel-scale, high-resolution videos and image sequences by panning or zooming in and out of the images while simultaneously moving back and forth through time.

Viewers, for instance, can use the system to watch some plants move wildly as they grow while others get eaten by caterpillars, or view a computer simulation of the early universe as gravity works across 600 million light-years to condense matter into filaments and finally into stars that can be seen by zooming in for a closeup.

The system is an extension of the GigaPan technology developed by the CREATE Lab and NASA, which can capture a mosaic of thousands of digital pictures and stitch those frames into a panorama that be interactively explored via computer. To extend GigaPan into the time dimension, image mosaics are repeatedly captured at set intervals, and then stitched across both space and time to create a video in which each frame can be hundreds of millions, or even billions of pixels.

Using HTML5, CREATE Lab computer scientists have developed algorithms and software architecture that make it possible to shift seamlessly from one video portion to another as viewers zoom in and out of Time Machine imagery. To keep bandwidth manageable, the GigaPan site streams only those video fragments that pertain to the segment and/or time frame being viewed.

Source: http://goo.gl/G5QbZ

Source and/or and/or additional resources read more: http://3.ly/rECc  Publisher and/or Author and/or Managing Editor:__Andres Agostini ─ @Futuretronium at Twitter! Futuretronium Book at http://3.ly/rECc




Elon Musk: I’ll put a man on Mars in 10 years

April 25, 2011 

SpaceX will launch a rocket into orbit in three years and will “go all the way to Mars” in 10 to 20 years, SpaceX CEO Elon Musk said on The Wall Street Journal MarketWatch Friday.

The statement follows a SpaceX announcement last week that NASA has awarded the company $75 million to develop a revolutionary launch escape system that will enable the company’s Dragon spacecraft to carry astronauts.

Source: http://goo.gl/l4mhf

Source and/or and/or additional resources read more: http://3.ly/rECc  Publisher and/or Author and/or Managing Editor:__Andres Agostini ─ @Futuretronium at Twitter! Futuretronium Book at http://3.ly/rECc

Neuron migration in the brain suggests how cancer cells might also travel

April 25, 2011 

Researchers at Fred Hutchinson Cancer Research Center have found a new mechanism by which neurons migrate in the developing brain, suggesting how other types of cells, including cancer cells, may also travel within the body in metastasis.

New neurons initially move in a straight line, from the inside to the outside, until they reach a layer called the intermediate zone in the cortex. This zone contains relatively few neurons but many connecting fibers, or axons. When new neurons reach this layer, they lose their way and start wandering — up, down, left and right, frequently changing direction.

When, seemingly by chance, neurons emerge from the intermediate zone, they realign with their original direction of movement and speed ahead through layers of differentiated neurons towards the outer surface of the cortex.

The researchers aimed to determine how neurons get back on track after they emerge from the chaos of the intermediate zone. They identified a signaling protein, called Reelin, which is made by cells in the outermost layer of the cortex. It has been known that mutations in the Reelin gene cause profound cortical layering abnormalities in rodents and people, but it has been unclear which stage of neuron migration goes awry when Reelin is absent.

The researchers showed that new neurons respond to Reelin as they emerge from the intermediate zone. They also showed that a membrane protein called N-cadherin increases on the surface of neurons when the neurons encounter Reelin. The surface increase in N-cadherin allows the cell to choose the appropriate direction for its next stage of migration.

“The new role for N-cadherin in orienting migrating cells is quite unexpected and suggests that cadherins on the surface of other types of normal or cancer cells may also be involved in helping them move rather than stay in place,” the researchers suggest.

Tracking the life cycle of RNA molecules to detect cancer

In a related study, scientists at the Broad Institute have developed an approach that offers many windows into the life cycle of RNA molecules that will enable other scientists to investigate what happens when something in a cell goes wrong.

The scientists developed a method that allows them to tease apart the different stages of this life cycle by measuring how much messenger RNA (mRNA) is produced and how much is degraded. The balance of these two processes contributes to the changes seen in RNA levels in a cell over time, much the way that birth and death rates contribute to a country’s total population.

The scientists harnessed an existing technique to trace the fate of newly produced RNA and paired it with a new sequencing-based technology that counts molecules of mRNA. The results also gave the researchers a view of some of the in-between steps, during which mRNA is edited or processed — an unexpected but serendipitous finding.

The researchers were able to take “snapshots” of RNA levels over very short time intervals. Strung together, these snapshots reveal not only how the amount of RNA changes, but also the short-lived, intermediate phases of the RNA life cycle that are otherwise impossible to detect.

One critical application of the new method is in following up on leads from disease studies, such as mutated genes in cancer or other diseases that impact the RNA life cycle, the scientists said.

Source: http://goo.gl/jKHta

Source and/or and/or additional resources read more: http://3.ly/rECc  Publisher and/or Author and/or Managing Editor:__Andres Agostini ─ @Futuretronium at Twitter! Futuretronium Book at http://3.ly/rECc

Can Hobbyists and Hackers Transform Biotechnology?

In his new book Biopunk: DIY Scientists Hack the Software of Life, Marcus Wohlsen explores the new movement in garage-based biotech.

By Amanda Gefter

For most of us, managing our health means visiting a doctor. The more serious our concerns, the more specialized a medical expert we seek. Our bodies often feel like foreign and frightening lands, and we are happy to let someone with an MD serve as our tour guide. For most of us, our own DNA never makes it onto our personal reading list.

Biohackers are on a mission to change all that. These do-it-yourself biology hobbyists want to bring biotechnology out of institutional labs and into our homes. Following in the footsteps of revolutionaries like Steve Jobs and Steve Wozniak, who built the first Apple computer in Jobs's garage, and Sergey Brin and Larry Page, who invented Google in a friend's garage, biohackers are attempting bold feats of genetic engineering, drug development, and biotech research in makeshift home laboratories.

In Biopunk, journalist Marcus Wohlsen surveys the rising tide of the biohacker movement, which has been made possible by a convergence of better and cheaper technologies. For a few hundred dollars, anyone can send some spit to a sequencing company and receive a complete DNA scan, and then use free software to analyze the results. Custom-made DNA can be mail-ordered off websites, and affordable biotech gear is available on Craigslist and eBay.

Wohlson discovers that biohackers, like the open-source programmers and software hackers who came before, are united by a profound idealism. They believe in the power of individuals as opposed to corporate interests, in the wisdom of crowds as opposed to the single-mindedness of experts, and in the incentive to do good for the world as opposed to the need to turn a profit. Suspicious of scientific elitism and inspired by the success of open-source computing, the bio DIYers believe that individuals have a fundamental right to biological information, that spreading the tools of biotech to the masses will accelerate the pace of progress, and that the fruits of the biosciences should be delivered into the hands of the people who need them the most.

With all their ingenuity and idealism, it's difficult not to root for the biohackers Wohlsen meets. Take MIT grad student Kay Aull, who built her own genetic testing kit in her closet after her father was diagnosed with the hereditary disease hemochromatosis. "Aull's test does not represent new science but a new way of doing science," Wohlsen writes. Aull's self-test for the disease-causing mutation came back positive.

Or take Meredith Patterson, who is trying to create a cheap, decentralized way to test milk for melamine poisoning without relying on government regulators. Patterson has written a "Biopunk Manifesto" that reads in part, "Scientific literacy empowers everyone who possesses it to be active contributors to their own health care, the quality of their food, water and air, their very interactions with their own bodies and the complex world around them."

Biohackers Josh Perfetto and Tito Jankowski created OpenPCR, a cheap, hackable DNA Xerox machine (PCR stands for "polymerase chain reaction," the name for a method of replicating DNA). Interested biohackers can pre-order one for just over $500 or, once it's ready, download the blueprint free and make their own. According to the website, its apps include DNA sequencing and a test to "check that sushi is legit." Jankowski "hopes to introduce young people to the tools and techniques of biotech in a way that makes gene tweaking as much a part of everyday technology as texting," Wohlsen writes. Jankowski, together with Joseph Jackson and Eri Gentry, also founded BioCurious, a collaborative lab space for biohackers in the Bay area. "Got an idea for a startup? Join the DIY, 'garage biology' movement and found a new breed of biotech," their website exhorts.

Then there's Andrew Hessel, a biohacker fed up with the biotech business model, which he believes is built on the hoarding of intellectual property and leads companies to prioritize one-size-fits-all blockbuster drugs. "During the sixty years or so that computers went from a roomful of vacuum tubes to iPhones, the pace of drug development has never quickened," Hessel tells Wohlsen. Hoping to change that, Hessel is developing the first DIY drug development company, the Pink Army Cooperative, whose goal is to bioengineer custom-made viruses that will battle breast cancer. "Personalized therapies made just for you. In weeks or days, not years. Believe it. It's time for a revolution," the company's website proclaims. "We are trying to be the Linux of cancer," Hessel explains.

Of course, some of these possibilities are frightening. If biohackers can engineer organisms to cure diseases, surely they can engineer organisms to inflict them. Wohlsen, however, isn't overly concerned. The technology just isn't in place for biohackers to bioengineer weapons worth worrying about, he says. Not only is genetic engineering unnecessary to commit acts of bioterror, he writes, but it's also much more complex than other options available for manufacturing biotoxins. In fact, the FBI has expressed interest in using DIY biohackers as "sentries on biosecurity's front lines."

And yet, writes Wohlsen, the biohackers have yet to produce any truly novel results, and he isn't convinced that they will. "They are not about to cure cancer when an eleven-thousand-employee, $80 billion company like Genentech has so far failed. They are not going to unleash the world's first artificial amoeba tomorrow or graft wings onto house cats," he writes. "The real significance of DIY biotechnologists might lie not in any particular technological achievement but in the provocative questions they raise."

Wohlsen, while sympathetic to the biohackers' ideals, remains neutral about the merits of their activities. He offers few opinions of his own but raises the questions we need to begin asking: What is the value of expertise relative to the wisdom of crowds? Do intellectual property laws further or slow scientific progress? Should access to information about our own bodies be held as a basic human right? How much regulatory oversight is warranted when it comes to tinkering with life? And, ultimately, should just anyone be able to do science?

Personally, I'd still rather have a physician in charge of my health than tinker with it myself using partial knowledge and makeshift tools. But it's fun to know that the latter is possible. I won't hold my breath waiting for someone to cure cancer in his or her garage, but I am glad to know people are out there trying—and it will be profoundly cool if they succeed.

Source: http://goo.gl/pDo3t

Source and/or and/or additional resources read more: http://3.ly/rECc  Publisher and/or Author and/or Managing Editor:__Andres Agostini ─ @Futuretronium at Twitter! Futuretronium Book at http://3.ly/rECc


Fog harvesting for water

April 25, 2011 

MIT researcher Shreerang Chhatre and associates have developed new ways to use “fog harvesting” to provide water to the world’s poor.

A fog-harvesting device consists of a fence-like mesh p anel, which attracts droplets, connected to receptacles into which water drips. To build larger fog harvesters, researchers generally use mesh, rather than a solid surface, because a completely impermeable object creates wind currents that will drag water droplets away from it.

In some field tests, fog harvesters have captured one liter of water (roughly a quart) per one square meter of mesh, per day. Chhatre is conducting laboratory tests to improve the water collection ability of existing meshes.

Source: http://goo.gl/ZllyA

Source and/or and/or additional resources read more: http://3.ly/rECc  Publisher and/or Author and/or Managing Editor:__Andres Agostini ─ @Futuretronium at Twitter! Futuretronium Book at http://3.ly/rECc


Japanese robots await call to action

Kyodo

Japanese robots designed for heavy lifting and data collection have been prepared for deployment at irradiated reactor buildings of the Fukushima No.1 nuclear power station, where U.S.-made robots have already taken radiation and temperature readings as well as visual images at the crippled facility via remote control.

At the request of the Ministry of Economy, Trade and Industry, Tmsuk Co., a robot builder based in Munakata, Fukuoka Prefecture, has put its rescue robot T-53 Enryu on standby at a dedicated facility in Tsukuba, Ibaraki Prefecture, about 170 km southwest of the power plant in Fukushima Prefecture devastated by the March 11 magnitude-9.0 quake and tsunami.

Enryu (rescue dragon) was developed in the aftermath of the magnitude-7.3 Great Hanshin Earthquake that hit the Kobe area in 1995. Designed to engage in rescue work, the remote-controlled robot has two arms that can lift objects up to 100 kg. It has "undergone training" at the Kitakyushu municipal fire department in Fukuoka Prefecture.

Tmsuk President Yoichi Takamoto said, "We don't know what we can do at a nuclear power plant until we give it a try, but we do believe we can do something about removing rubble" from explosions that have blocked human operations around the plant.

Satoshi Tadokoro, a Tohoku University professor specializing in robots used for disaster operations, said, "Japan doesn't have any military-use robots, but it has technology on a par with the United States."

Tadokoro said a plan is under way to employ at the power plant a highly mobile research robot that he was involved in developing.

In early April, the Robotics Society of Japan and other related organizations jointly set up a task force and sent engineers to the government's project team that is brainstorming with Tokyo Electric Power Co. about how robots may be used at the plant.

But given the urgency of the mission and circumstances, European and U.S.-built robots with a proven track record in military use and nuclear plant accidents have drawn attention.

A pair of PackBots from iRobot Corp. of the United States entered the buildings of reactors 1 to 3 Sunday and Monday to take video footage and check radiation levels, temperatures, oxygen concentrations and other data inside.

A robotics industry source expressed frustration about the absence of Japanese robots at the plant in the initial crisis response at Fukushima No. 1 "We hope to obtain for Japanese manufacturers critical data that may be acquired only through operating machines at a site and use them for robot development," the source said.

Nuclear power plant builders Toshiba Corp., Hitachi Ltd. and Mitsubishi Heavy Industries Ltd. have promoted development of robots for use in accidents at atomic plants since a major accident at a nuclear fuel processing plant in Tokai, Ibaraki Prefecture, in 1999 that claimed the lives of two people and exposed hundreds of others to radioactive materials.

The central government initially contributed ¥3 billion in subsidies for the robot project but its funding did not last long and the development process was halted before any units were perfected for actual use.

An official of the Manufacturing Science and Technology Center, which was in charge of the development at that time, said, "There was a strong sense among us that those types of robot would never have a real-life chance to flex their muscles."

Some prototype robots developed in the process have been put on display at Sendai Science Museum. A museum employee said of the halted development initiative, "It was like stopping premium payments for a nonrefundable insurance policy."

While the Enryu is ready for its mission to remove rubble at the stricken plant, the biggest challenge is combating the spread of radiation.

University of Tokyo professor Hajime Asama said, "Mobilizing a robot without any consideration (for radiation) could complicate the situation and may even hinder work."

Its ability to work in a highly radioactive environment should be checked beforehand and, if need be, it should be reinforced with lead as a shield for radiation, he said.

Source: http://goo.gl/3K8mC

Source and/or and/or additional resources read more: http://3.ly/rECc  Publisher and/or Author and/or Managing Editor:__Andres Agostini ─ @Futuretronium at Twitter! Futuretronium Book at http://3.ly/rECc


Data-intensive supercomputing

April 25, 2011 

The amount of digital data generated by instruments such as DNA sequencers, cameras, telescopes, and MRIs is now doubling every 18 months, says Michael Norman, director of the San Diego Supercomputer Center (SDSC) at the University of California, San Diego (UCSD).

“Digital data is advancing at least as fast, and probably faster, than Moore’s Law,” said Norman…. But I/O (input/output) transfer rates are not keeping pace — that is what SDSC’s supercomputers are designed to solve.”

The result of a five-year, $20 million grant from the National Science Foundation, the supercomputer, named Gordon, will have 250 trillion bytes of flash memory and 64 I/O nodes, and be capable of handling massive data bases while providing up to 100 times faster speeds when compared to hard drive disk systems for some queries.

This makes Gordon ideal for data mining and data exploration, where researchers have to churn through tremendous amounts of data just to find a small amount of valuable information, not unlike a web search.

Potential uses include genome assembly from sequencer reads, classification of objects found in massive astronomical surveys, oceanography, atmospheric science, oil exploration, quantum chemistry, structural engineering, and computer-aided design/computer-aided manufacturing (CAD/CAM).

Source: http://goo.gl/eCdig

Source and/or and/or additional resources read more: http://3.ly/rECc  Publisher and/or Author and/or Managing Editor:__Andres Agostini ─ @Futuretronium at Twitter! Futuretronium Book at http://3.ly/rECc