Forgot your password?
typodupeerror

+ - Hydrogen Fuel made with Sunlight and Zinc->

Submitted by
gordona
gordona writes "Perhaps free energy or nearly free is on the way. A PhD student at the University of Delaware had demonstrated how that free hydrogen gas can be generated with sunlight, zinc oxide, and water. A chamber that holds the zinc oxide is heated by concentrating sunlight to 3500 degrees Fahrenheit which vaporizes the zinc. The zinc vapor can then be put into water which then reacts to form zinc oxide releasing hydrogen. It isn't stated how the zinc vapor is separated from the oxygen that is generated however and its not clear if the process is scalable."
Link to Original Source
Medicine

+ - Doctors Identify Overused and Unnecessary Medical Procedures

Submitted by
Hugh Pickens writes
Hugh Pickens writes writes "The LA Times reports that in a new report aimed at improving healthcare and controlling runaway costs a coalition of leading medical societies has identified nearly 100 medical procedures, tests and therapies that are overused and often unnecessary. The medical interventions — including early caesarean deliveries, CT scans for head injuries in children and annual Pap tests for middle-aged women — may be necessary in some cases, the physician groups say but often they are not beneficial and may even cause harm. "We are very concerned about the rapidly escalating cost of healthcare," says Dr. Bruce Sigsbee. "This is not healthy for the country, and something has to be done." Each of the specialty medical societies has provided a list of five procedures that physicians and patients should question about the overuse of medical tests and procedures that provide little benefit and in some cases harm. For example, despite the popularity of early caesareans, there is growing evidence that babies born before 39 weeks' gestation have higher risks of learning disabilities and even death. American doctors also order nearly twice as many CT and MRI exams as doctors in other industrialized countries and they perform more knee replacements and deliver more babies by caesarean section. A growing number of experts have concluded that much medical care in the U.S. is wasteful and even dangerous for patients. A 2012 report from the independent Institute of Medicine estimated total waste in the system at 30%, or $750 billion a year. "Millions of Americans are increasingly realizing that when it comes to healthcare, more is not necessarily better," says Dr. Christine K. Cassel."
Power

+ - Scientists develop a way to extract energy from coal without burning it ->

Submitted by Time_Ngler
Time_Ngler (564671) writes "Scientists have developed a new method to utilize the power from coal, by having it chemically react with iron-oxide pellets. Working over a span of 10 years with a budget of $15 million, barring any unforeseen problems, the new process should be ready to go into commercial production within the next 5 years. The reaction does not produce carbon dioxide and leaves water and coal ash as its byproducts. Furthermore, the iron used in the reaction can be recycled."
Link to Original Source
Power

+ - Is the fibonacci solar power proven wrong?-> 2

Submitted by dvdme
dvdme (1458155) writes "Gizmodo writes that the 13 year old fibonacci solar power breaktrough, that we could read about here on slashdot on http://hardware.slashdot.org/story/11/08/19/1218219/13-Year-Old-Uses-Fibonacci-Sequence-For-Solar-Power-Breakthrough, could be already proven wrong.
A blogger wrote that the 13 year old made some mistakes and why. On the blog article (http://webcache.googleusercontent.com/search?q=cache:JmlMNqVPKlsJ:uvdiv.blogspot.com/2011/08/solar-panel-trees-really-are-inferior.html+http://uvdiv.blogspot.com/2011/08/solar-panel-trees-really-are-inferior.html&cd=1&hl=en&ct=clnk&gl=us&source=www.google.com) we can read that "by mistake he did not measure power outputs from the solar cells. Instead he measured voltage, without a load attached ("open circuit"). They are barely related — in solar cells, voltage is actually almost a constant, independent of power." After reading the full article, it seams the the breaktrough, after all, wasn't!"

Link to Original Source
Science

Graphene Can Be Made With Table Sugar 142

Posted by timothy
from the let's-grid-it-on dept.
Zothecula writes with this snippet from Gizmag: "There's no doubt that the discovery of graphene is one sweet breakthrough. The remarkable material offers everything from faster, cooler electronics and cheaper lithium-ion batteries to faster DNA sequencing and single-atom transistors. Researchers at Rice University have made graphene even sweeter by developing a way to make pristine sheets of the one-atom-thick form of carbon from plain table sugar and other carbon-based substances. In another plus, the one-step process takes place at temperatures low enough to make the wonder material easy to manufacture."

Comment: Re:Security? (Score 1) 154

by dvdme (#34208670) Attached to: Hidden Debug Mode Found In AMD Processors
That is a very interesting point. I recall that when I did some work programming directly to a processor in Assembly, while using the debug mode I was able to break the execution and change any register to another value and then resume it. I know that this was just a school project and the processor I used isn't as complex as an AMD processor is but if the same principle applies, then your comment makes a very good point.
Facebook

+ - Facebook to Challenge Google for Hosted Email->

Submitted by Goffee71
Goffee71 (628501) writes "Not satisfied with dominating social networks, Facebook is now going after the major email services. On Monday, Facebook is holding a surprise launch event where it will unveil, what 95% of the tech press believes, will be a new email service to rival the likes of Gmail, Hotmail and others. The event will precede Facebook boss Mark Zuckerberg's appearance at the Web 2.0 Summit where the news will go down like a lead balloon among the dominant email players."
Link to Original Source
Android

Android Phone Solves Rubik's Cube In 12.5 Seconds 76

Posted by timothy
from the varies-with-the-cube dept.
DeviceGuru writes "A Lego Mindstorms robotics kit controlled by an HTC Nexus One smartphone successfully untangled a Rubik's Cube puzzle in 12.5 seconds at this weeks ARM technical conference in Silicon Valley. The current 3x3x3 cube-solvers's 15-second average represents a substantial improvement over the 25-second solutions of an earlier version, which was powered by a circa-2006 Nokia N95 smartphone, thanks to a faster (1GHz) CPU, more RAM, and revamped cube-solving algorithms. ARM Engineer David Gilday, who created the robotic cube-solver, claims the current version's algorithms can handle cube complexities up to 100x100x100, assuming he build the mechanics. In terms of racing humans, Gilday says the Lego robotics kits can only manage around 1.5 moves per second, whereas human players can make between 5 and 6 moves per second, amazingly enough." Update: 11/12 03:45 GMT by T : Apologies to creator David Gilday, whose name was earlier misspelled.
Operating Systems

Can Windows, OS X and Fedora All Work Together? 375

Posted by timothy
from the like-to-buy-the-world-a-coke dept.
greymond writes "In my ever growing job responsibilities, I've recently been tasked with documenting our organization's IT infrastructure, primarily focusing on cost analysis of our hardware leases and software purchases. This is something that has never been done in our organization before and while it's moving along slowly, I'm already seeing some places where we could make improvements. Once completed, I see this as an opportunity to bring up the topic of migrating the majority of our office from Windows 7 to Linux and from Exchange to Gmail. However, this would result in three departments each running a different system: Windows, OS X, and most likely Fedora. Has anyone worked in or tried to set up an environment like this? What roadblocks did you run into? Is this really feasible or should I just continue to focus on the cutbacks that don't require OS changes? (The requirement for having three different systems is that the vast majority of our administration, who rely solely on an install of Microsoft Windows, Word and Excel, are savvy enough that if they came in and saw Gnome running on Fedora with Open Office they'd pick it up fast. However, our marketing department is composed entirely of Apple systems, and the latest Adobe Creative Suite doesn't seem to all work under Wine. The biggest issue is with the Sales department though, as they rely on a proprietary sales platform that is Windows only — and generally, sales personal give the biggest push back when it comes to organizational changes.)"
Biotech

Lizard Previously Unknown To Science Found On Vietnam Menu 133

Posted by samzenpus
from the try-the-bigfoot-burger dept.
eldavojohn writes "A lizard long served on the menu in the Mekong Delta has recently caught the attention of scientists when it was noted that all animals in the species appeared identical as well as female. The species appears to be a hybrid of two other species (like a mule or liger). But the curious thing is that this hybrid isn't sterile — it reproduces asexually. The species, known for some time in Vietnam, has now officially been named Leiolepis ngovantrii."
Science

+ - What consequences would have an asteroid impact?

Submitted by dvdme
dvdme (1458155) writes "The website http://www.purdue.edu/impactearth from the Imperial College of London allows the user the simulated what consequences and asteroid impact would have on Earth.
The user can configure some variables such as diameter of the body, density, angle and velocity of impact.
It's also required that the user specifies his distance from the point of impact, so that he can know if he would be directly affected or not either by shock wave or by a tsunami."

+ - How to explain relativity in few words?

Submitted by dvdme
dvdme (1458155) writes "Recently I was asked to explain what was Einstein's theory of relativity in few and simply words to someone who doesn't knowledge in physics.
I'm not an expert myselft but I thought a little but about it and said that relativity explains how everything moves, in few words, the mechanics of the universe. Furthermore I also explain why it's called "theory of relativity", because it states the every movement is relative to the observer. I used the example of an observer inside a car vs. an observer outside a car.
I also explained how relativity describes gravity as a space-time bend by mass with the classical exemple of a heavy ball bending an elastic sheet, thus, "attracting" smaller balls.
I gave some examples of the consequences such as time dilation but in the end I got the impression that I didn't was very clear.
So, the question stood in my head, how to you explain what is the theory of relativity to someone without any physics background?"

+ - Today in Computing History->

Submitted by Anonymous Coward
An anonymous reader writes "I've just finished assembling a website for a project I've been working on.

https://sites.google.com/site/todayincomputinghistory/

Here, you can find out what happened on a particular day of the year in the history of computing. There's a google gadget (which can be embedded on your own website), a smartphone app and even a link to an instructable that shows how I did it. I hope you find this project as interesting as I did as I was putting it together!"

Link to Original Source

Never ask two questions in a business letter. The reply will discuss the one you are least interested, and say nothing about the other.

Working...