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

 


Forgot your password?
Close
typodupeerror
×

Feed Science Daily: 'Man-made' Water Has Different Chemistry (sciencedaily.com)

From feed by sdfeed
As population growth, food production and the regional effects of climate change place greater stress on the Earth's natural water supply, "man-made" water -- created by removing salt from seawater and brackish groundwater through reverse osmosis desalination -- will become an increasingly important resource for millions of humans, especially those in arid regions such as the Middle East, the western United States, northern Africa and central Asia.
Power

Submission + - SPAM: Refrigerator technology to cool computers

Submitted by
coondoggie
coondoggie writes: "Researchers today said they are working on a way to use tiny refrigerator components to cool computers, a move they say would increase system performance and shrink the size of the devices. Researchers at Purdue University said they have developed miniature refrigerator technology such as compressors and evaporators to cool computer innards. Researchers said they have developed a model for designing tiny compressors that pump refrigerants using penny-size diaphragms made of ultra-thin sheets of a plastic called polyimide and coated with an electrically conducting metallic layer to help remove heat. [spam URL stripped]"
Link to Original Source
Privacy

Submission + - Acquire Online (acquireonline.org)

Submitted by
kardnull
kardnull writes: "This site shows how small and tiny security cameras are getting. These security cameras are being used by the government and and for personal home use. The technology and costs have become more afordable. The site is in Spanish and has good information."
Earth

Submission + - Looking for methods to reclaim energy from brush

Submitted by peas_n_carrots
peas_n_carrots writes: Every year, the prolific trees and weeds in my yard produce mountains of cellulosic material. I put as much out for the weekly brush pickup as I can, but even 3 large trash cans a week isn't enough to keep up. When an older tree dies and is cut down, it leaves a whole lot of wood waste. It's not high-quality hardwood, but it burns well. I usually have a couple bonfires a year and cook marshmallows & yams.

I've always hoped there would be some way to reclaim the vast amount of heat energy released from burning the brush. It's essentially a carbon-neutral solar-powered energy source (plants absorb sunlight, breathe in CO2 and build fibrous structures). A Stirling engine seems like an ideal candidate, but there's no good source of consumer-grade models (500-2000W). All the ones I've found are either trinkets powered by body heat or coffee, or industrial grade ones made by the likes of WhisperGen (in New Zealand). I don't have the equipment to build a reliable, useful Stirling engine. My vision for a heat reclamation system looks something like a Stirling engine on top of a chiminea, which is very good at funneling heat up and out its stack. The engine would turn a generator and charge batteries and such.

Burning for home heating is only feasible during the winter. Much of the brush is not good for burning indoors either. I've thought of using it for heating water, but tying that into the water system would be complicated/costly. What other ideas does the resourceful Slashdot crowd have?
The Media

Submission + - RBS issues global stock and credit crash alert (telegraph.co.uk)

Submitted by
An anonymous reader writes: How long till Main stream news picks this up? This was yesterday in the Telegraph.

To Quote:

The Royal Bank of Scotland has advised clients to brace for a full-fledged crash in global stock and credit markets over the next three months as inflation paralyses the major central banks.

"A very nasty period is soon to be upon us — be prepared," said Bob Janjuah, the bank's credit strategist.

A report by the bank's research team warns that the S&P 500 index of Wall Street equities is likely to fall by more than 300 points to around 1050 by September as "all the chickens come home to roost" from the excesses of the global boom, with contagion spreading across Europe and emerging markets.
PlayStation (Games)

Submission + - Say hello to the PS-Wii (independent.co.uk)

Submitted by Curly Top
Curly Top writes:
They say imitation is the sincerest form of flattery, but surely this is going a bit far. In their quest to make Playstation 3 the ultimate home entertainment system, the bods at Sony seem to have been spending a bit too much time playing their rival's console, the Nintendo Wii.
Despite their new DualShock 3 pad still not having a confirmed Europe release date , according to gaming website gamesindustry.biz , Sony are busy developing another new controller — and, interestingly, it may have been inspired by Nintendo's revolutionary Wiimote .
Is it just me or is Sony going a bit too far with his one? Full article at IndyBlogs
Businesses

Submission + - Staffing Agencies the curse of modern IT 1

Submitted by kupojsin
kupojsin writes: As a junior-mid level sys admin who recently left my place of employment I'd expected to encounter a minimum amount of IT staffing agencies in my next job hunt. What has surprised me during the process however is that I've ONLY been able to find Staffing agency listings on virtually every place I search, whether it be Dice, Monster, Craigslist etc. Often search results on these sites are 90-95% recruitment agencies. I've utilized a throwaway email address and phone number (grand central) on my resume and now I'm glad I did, due to the sheer number of replies I get from staffing agencies. Does anyone still get IT jobs the old fashioned way nowadays?
Security

Submission + - Stolen Medical Data, SSNs for Sale on Servers (arborlaw.biz)

Submitted by
Weblver1
Weblver1 writes: "More than 500 megabytes of stolen medical and business data and Social Security Numbers (SSNs) have been found 'for sale' on "crimeservers" in Malaysia and Argentina.
Vulnerable health data was accessible via compromised login information for healthcare systems using Citrix remote access software"
The Internet

Singapore Firm Claims Patent Breach By Virtually All Websites 481

Posted by timothy from the oh-that-makes-sense dept.
An anonymous reader writes "A Singapore firm, VueStar has threatened to sue websites that use pictures or graphics to link to another page, claiming it owns the patent for a technology used by millions around the world. The company is also planning to take on giants like Microsoft and Google. It is a battle that could, at least in theory, upend the Internet. The firm has been sending out invoices to Singapore companies since last week asking them to pay up."
Power

Successful Cold Fusion Experiment? 387

Posted by ScuttleMonkey from the so-cold-it's-hot dept.
An anonymous reader writes "The italian economic journal 'Il sole 24 ore' published an article about a successful cold fusion experiment performed by Yoshiaki Arata in Japan. They seems to have pumped high pressure deutherium gas in a nanometric matrix of palladium and zyrcon oxide. The experiments generates a considerable amount of energy and they found the presence of Helium-4 in the matrix (as sign of the fusion). I was not able to find other articles about this but the journal is very authoritative in Italy. Google translations are also available."
The Almighty Buck

Submission + - OLPC cost rises from $100 to $188 per laptop (cnn.com)

Submitted by
Arathon
Arathon writes: "Turns out that the amazing "$100" laptop designed by the "One Laptop Per Child" program isn't going to make it out the door for that price. CNN reports that the laptops are now expected to cost $188 apiece when they come out later this fall. This is expected to make the program's appeal potentially much smaller, since the developers were relying on the mind-bogglingly low-price to hook governments into the concept of buying laptops for their people. OLPC's spokesman guarantees that the price won't rise further, to "above $190". The price differential is being blamed on raw materials costs and currency fluctuation.
Is this the end of the OLPC's newsworthiness, or should we continue to hope that it will make the difference that so many have said it will?"
Communications

Submission + - Comcast Needs to Clearly Define their Usage Policy (newsgroupreviews.com)

Submitted by
UsenetJunkie
UsenetJunkie writes: "Comcast is currently in the hot seat with many customers.Causes range from disconnecting users for utilizing too much bandwidth to drastically limiting BitTorrent traffic. What is the answer to the madness? While Comcast denies bandwidth throttling and traffic shaping allegations I wonder what they would do if all the BitTorrent users switched ISP's."

Slashdot Top Deals

E = MC ** 2 +- 3db

Close