Flying bicycle

A duo of British designers' passion for cycling and life-long dreams of flight has spawned one of the world's first flying bicycles -- a conventional bike that converts to an easy-to-operate aircraft that they say can soar to 4,000 feet and cover 75 miles-plus after liftoff.


Yannick Read, 42, and John Foden, 37, who met while living on the same road in Kingston upon Thames, England, quickly learned that aside from both being designers and avid cyclists, they always wanted to fly. The two decided to partner on what they saw as the next step in cycling: aviation.


"Growing up we wanted to be pilots," Read told ABCNews.com. "But training and maintenance and cost are real barriers. We wanted to create an aircraft that was as accessible, relatively speaking, as could be."


Read said he sent a long-shot email to Jim Edmondson with British paramotor manufacturer Parajet in March 2011, in which he outlined the duo's design and concept for their flying bike. To his surprise, he was quickly greeted with an enthusiastic response.


Read and Folden were encouraged to widen their concept and told they could have the Jim Edmondson's assistance and support.

A different kind of flying bicycle recently achieved liftoff in Prague. Read more here.


The duo began to pen out ideas and concepts for what eventually became the Paravelo, a combination of a para-wing and a conventional bike, which tows a trailer carrying a powerful fan. Once in an open clearing, the cyclist can unfurl the para-wing, start the fan with an electric-start motor and, within a matter of yards, be airborne.


Read and Foden began a Kickstarter campaign this week with a goal of reaching £50,000 (about $78,000) to launch what he they're calling "safe, practical and affordable personal flight."


"We built a series of prototypes, and the current one is fairly polished," he said. "The next version, with funding, would be to develop, to ruggedize it, make it more robust, the way we envision it being used -- as a bicycle Monday to Friday. You will be able to commute on the bike. Then, make use of the flying capability."


Read says the latest prototype, which he describes as the size of a flight suitcase, can fit in the trunk of a car. "It's a niche product. We're not going to see cities with these swarming through the skies," Read said. "It's an unusual and adventurous evolution for the bicycle."


But is the flying bicycle, which in the U.K. doesn't require a special license to operate and is unregulated, totally safe for the average user? Read says it is.


"It's safe because of low air speeds. You're flying about 25 miles per hour, that low speed makes it so safe," he said. "In terms of controlling, it's like controlling a little Vespa scooter."


Training for flight in the Paravelo, Read says, can be completed in as little as seven days and, he adds, the vehicle could be useful for a number of professions, including park rangers and border patrol, as well as being a great addition for the adventurous weekender.


The prototype even features a built-in tent for what read calls "flamping," or flying and camping.


As for his and Foden's crowd-funding campaign, Read sees it not just as a way to help his dream take flight, but as exploratory means to gauge reaction and interest.


"Were being up front and saying that it looks pretty, and it works," he said. "We want to show it's a robust, practical, usable machine, that won't work just the day you buy it, but for many, many years.


This news is copy from cnn

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Waterproof Samsung Galaxy S4 Active makes some waves

Samsung's Galaxy S4 line gets another family member in the Samsung Galaxy S4 Active, a hardened, ruggedized spin off of the company's flagship model.


Waterproof to a meter below the surface and for up to 30 minutes, the Active carries on computing with Android 4.2 Jelly Bean, Samsung's TouchWiz interface, and a 1.9GHz quad-core processor, the same as its more delicate Galaxy S4 sibling.


Many of its other specs are also similar, but one that stands out is the camera, whose 8-megapixel module can take this bad boy under the waves with its brand-new aqua mode.

I love that Samsung has finally made waterproofing a feature rather than a fail-safe against damage. A lot of other rugged handsets that make the same waterproof claims stop short of turning the capability into a real benefit.

The handset's lower-caffeinated camera compared with the original GS4's may seem like a downgrade for some, but for the S4 Active's price of $199.99 on AT&T, its rugged features are a pretty fair compromise. We'll know a lot more when the phone launches on June 21 (see the teaser video above). Our team will also plan to get our hands on the Galaxy S4 Active on June 20 in London.


Since the Galaxy S4 Active arrives this summer, I have a feeling we're going to have a heck of a time testing out its aqua camera mode firsthand. Pool party, anyone?


This news is copy from http://reviews.cnet.com/smartphones/samsung-galaxy-s4-active/4505-6452_7-35783536.html

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Chemical Probe Confirms That Body Makes Its Own Rotten Egg Gas, H2S, to Benefit Health

A new study confirms directly what scientists previously knew only indirectly: The poisonous "rotten egg" gas hydrogen sulfide is generated by our body's growing cells.

Hydrogen sulfide, or H₂S, is normally toxic, but in small amounts it plays a role in cardiovascular health.

In the new study, chemists developed a chemical probe that reacts and lights up when live human cells generate hydrogen sulfide, says chemist Alexander R. Lippert, Southern Methodist University, Dallas. The discovery allows researchers to observe the process through a microscope.

The researchers captured on video the successful chemical probe at work, said Lippert, an assistant professor in the SMU Department of Chemistry.

"We made a molecular probe that, when it reacts with hydrogen sulfide, forms a fluorescent compound that can be visualized using fluorescence microscopy," Lippert said. "This is the first time that endogenously generated hydrogen sulfide has been directly visualized in a living system. This confirms a lot of hypotheses that scientists have, but no one had the tools to directly detect it in real time."

H₂S is one of several small gaseous molecules increasingly recognized as key signaling molecules in the body. For example, H₂S helps reduce high blood pressure. Scientists discovered in the past decade that cells in the human body generate small quantities of H₂S molecules, which in turn deliver information to proteins. The proteins act on the information to perform critical functions in the body.

Previously, scientists couldn't observe H₂S being generated in live cells. As a result, researchers faced challenges when studying hydrogen sulfide in living systems, Lippert said. The new discovery now provides a tool to view directly how and when hydrogen sulfide is generated, he said. Lippert and study co-author chemist Vivian S. Lin made the discovery.

Discovery provides research tool for scientists to observe H₂S in live cells

"Having the tools to do this in living systems is going to open up a lot of possibilities and experiments for scientists," Lippert said. "As a tool, this will allow researchers to ask questions that weren't possible before."

Lippert's real-time video features live human cells, taken from the lining of blood vessels and treated with the chemical probe and with a protein known to promote cell growth. Once the cells start generating H₂S, they behave like squiggly fluorescent green worms.

The researchers' scientific article, "Cell-trappable fluorescent probes for endogenous hydrogen sulfide signaling and imaging H₂O₂-dependent H₂S production," was published online in theProceedings of the National Academy of Sciences.

Lippert and Lin authored the research with Christopher J. Chang, principal investigator. Lin is a PhD candidate at the University of California at Berkeley. Chang is with the Howard Hughes Medical Institute, University of California at Berkeley. Lippert and Lin carried out the research in Chang's UC Berkeley laboratory.

Discovery can help scientists attack diseases such as cancer

H₂S -- along with nitric oxide, carbon monoxide and others in this emerging class of gaseous signaling molecules -- assists the body's large proteins.

Large proteins do much of the functional work in the body, such as digesting the food we eat and harnessing the energy in the oxygen we breathe. Their size, however, forces them to move slowly inside the cell. In contrast, H₂S and other small gaseous molecules diffuse quickly and easily across cellular membranes, enabling them to travel much faster and rapidly deliver information that mediates critical functions, such as blood pressure regulation, Lippert said.

For their experiments, Lippert and Lin placed living endothelial cells cultured from the internal lining of a blood vessel into a petri dish under a microscope.

Lippert and Lin then added a chemical solution containing an azide-functionalized organic molecule that they'd synthesized to act as a molecular probe. They gave the cells time to absorb the probe, then added a protein solution known to stimulate blood vessel formation. As the cells initiated blood vessel formation, H2S was generated. In reaction, the scientists observed a steady increase in the probe's fluorescence.

"Essentially we're observing the initial events that lead to the building of new blood vessels, a process that's active in babies as they develop, or in women during their menstruation cycles," Lippert said. "We see the cells get really bright as they start moving around and ruffling their membranes. That's the H₂S being formed. In the control group, which weren't stimulated with the growth protein, they don't get any brighter and they don't move around."

The discovery provides new insights that can help scientists attack diseases, such as cancer, by starving the nutrient supply to a tumor, Lippert said.

"When tumors grow they need a lot of blood support because they need the nutrients to support their rapid growth," he said. "If you can stop blood vessel formation you could starve the tumor and the tumor will die. So inhibiting H₂S formation might be a way to treat cancer using this method."

This news is copy originally from : http://www.sciencedaily.com/releases/2013/06/130618131854.htm

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iPhone 6 release date and news

Apple made the screen bigger last time. Is an even bigger iPhone on the way?

When Apple unveiled the iPhone 5, the reaction was a bit muted: where previous phones were massive leaps forward, the iPhone 5 was a bit longer and a lot easier to scratch.
So what can we expect from the next iPhone, the iPhone 6 or 5S? Let's see what we can glean from the varying sources of the internet - some reliable, some not so much. But when might the iPhone 6 release date even be?
One thing is for sure, with the release of such super handsets as the Samsung Galaxy S4, Sony Xperia Z and HTC One, the next iPhone will have to seriously up its game

iPhone 6 and the iPhone 5S are two different phones

The rumour mill doesn't seem too sure whether the next iPhone is going to be the iPhone 5S or the iPhone 6. Given the iPhone's history - from the 3G onwards, there's always been a half-step S model before the next numbered iPhone - we'd bet on an iPhone 5S first and an iPhone 6 a while later.
However, in May 2013 Stuff reported it received a photo of the till system at a Vodafone UK store (which it has since removed along with the reference to Vodafone), with '4G iPhone 6' listed. Interesting.
It's been suggested that there could even be three size variants of the new iPhone - check out these mocked up images by artist Peter Zigich. He calls the handsets iPhone 6 Mini, iPhone 6 & iPhone 6 XL.
Could we see both an iPhone 5S and iPhone 6 this year? Some reports suggest a new 5S in the middle part of the year before a revamped iPhone 6 towards the end of the year or very early in 2014.

 

iPhone 6 release date

Many pundits predict a summer iPhone 6 release date. It's quite likely that Apple is moving to a two-phones-per-year upgrade cycle, but we'd bet on a springtime 5S model and a bigger, iPhone 6, update in the Autumn, probably September.
Digitimes reckons predicts a summertime reveal for Apple's next generation phones, which again fits with a WWDC unveiling. In May it became clear that US carrier Verizon introduced an iPhone 5 price cut of as much as $100 USD.
Reports in April also suggested that Foxconn has added as many as 10,000 assembly line workers per week to its Zhengzhou plant as it readies itself for the iPhone 6 release date.
But Jefferies analyst Peter Misek reckons we'll see an iPhone 5S first, with a June 2014 release for the iPhone 6. Citi's Glen Yeung also believes that we won't see an iPhone 6 or cheap iPhone until 2014.

 

iPhone 6 casing

Multiple rumours say Apple's working on plastic cases for its next iPhone, mixing plastic and metal in such a way that "the internal metal parts [are] able to be seen from outside through special design." Could these images from Apple.pro be a new iPhone 6 complete with plastic casing? The cynic inside us says no, but you never know...
It's unclear whether such cases would be for the iPhone 5S or iPhone 6, or if Apple is simply considering making cheaper iPhone 4s to sell when the iPhone 3GS reaches the end of its life.
Speaking in March 2013, a KGI analyst said it believed Apple would turn to manufacturer Pegatron to make up to 75 per cent of low cost iPhone products. Indeed, rumours in early June 2013 pointed at a $399 price point for the cheap iPhone 6.

Pretty, yes, but also horrifically scratch-prone. Will your next iPhone have a plastic back?

The iPhone 6 will finally do NFC

That's what iDownloadblog reckons, quoting Jefferies analyst Peter Misek: it'll have a better battery too, he says. Many Android phones now boast NFC.
PayPal's chief information security officer, Michael Barrett said this during a recent keynote speech: "There is going to be a fingerprint enabled phone on the market later this year," he said. "Not just one, multiple."

Could this be inside the iPhone 6?

The iPhone 6 will run iOS 7

iOS 7 has been announced at WWDC 2013. It's a radical overhaul of the OS, especially in terms of the design which has fundamentally changed and is far flatter and more Android-like. There are rounded icons, striking colours and a stark font. There are new features, of course, such as Control Center, AirDrop and iTunes Radio.
We're expecting a September or October release date for iOS 7 in line with previous releases.

 

iPhone 6 storage

We've already seen a 128GB iPad, so why not a 128GB iPhone 6? Yes, it'll cost a fortune, but high-spending early adopters love this stuff.

iPhone 6 home button

According to Business Insider, of the many iPhone 6 prototypes Apple has made, one has a giant Retina+ IGZO display and a "new form factor with no home button. Gesture control is also possibly included" - more on that shortly. Mind you, it was mooted that Apple would dump the home button in time for iPhone 5, but it never happened.

iPhone 6 screen

The Retina+ Sharp IGZO display, would have a 1080p Full HD resolution. It's also been widely reported that Apple could introduce two handset sizes as it seeks to compete with the plethora of Android devices now on the market.
Take this one with a pinch of salt, because China Times isn't always right: it reckons the codename iPhone Math, which may be a mistranslation of iPhone+, will have a 4.8-inch display. The same report suggests that Apple will release multiple handsets throughout the year over and above the iPhone 5S and 6, which seems a bit far-fetched to us.
Patents show that Apple has been thinking about magical morphing technology that can hide sensors and even cameras. Will it make it into the iPhone 6? Probably not.
Could the touch screen even be transparent? Emirates 24/7 sin't the first source we'd turn to for bone fide rumours about a new smartphone, but it claims that an ultra-sensitive transparent touchscreen will make it into iPhone 6. The site also believes the display will be made by Sharp, which wouldn't be so surprising. One thing's for sure - a potential wraparound screen is probably a pipedream.
Jefferies analyst Peter Misek also says he believes the new iPhone will have a bigger screen. Different sizes also seem rather likely to us - the word on the street after WWDC 2013 was that there would be 4.7 and 5.7-inch versions.

 

iPhone 6 processor

Not a huge surprise, this one: the current processor is a dual-core A6, and the next one will be a quad-core A7. The big sell here is more power with better efficiency, which should help battery life.
Expect to see it in the 2013 iPad first, and expect to see an improved A6 processor, the A6X, in the iPhone 5S.

iPhone 6 camera

Apple's bought camera sensors from Sony before, and this year we're going to see a new, 13-megapixel sensor that takes up less room without compromising image quality.
An Apple patent, uncovered by Apple Insider in May 2013, shows a system where an iPhone can remotely control other illuminating devices - extra flashes. It would work in a similar manner to that seen in professional photography studios. Interesting stuff.

iPhone 6 eye tracking

One thing seems certain - Apple can't ignore the massive movement towards eye-tracking tech from other vendors, especially Samsung. It seems a shoe-in that Apple will deliver some kind of motion tech within the next iPhone, probably from uMoove.

The new iPhone will have better 4G LTE

On its UK launch, just one UK network had 4G LTE: Everything Everywhere, which currently offers 4G on the 1800MHz band. In 2013, all the other big names will be coming on board, offering 4G in other frequency bands. International iPhones already work across different 4G bands to the UK, so you can expect the UK iPhone 6 (and possibly the iPhone 5S) to be more promiscuous than the iPhone 5.
By the time the iPhone 6 emerges, iOS devices should also have "nonclassified communication approval" status from the US FCC, which means they won't need to go through a lengthy approval process.

iPhone 6 Wi-Fi may be 802.11ac

Apple likes to lead Wi-Fi standards adoption - its Airport really helped make Wi-Fi mainstream - and there's a good chance we'll see ultra-fast 802.11ac Wi-Fi in Apple kit this year. It's faster than Lighting, and not very frightening.

iPhone 6 wireless charging

Wireless charging still isn't mainstream. Could Apple help give it a push? CP Tech reports that Apple has filed a patent for efficient wireless charging, but then again Apple has filed patents for pretty much anything imaginable.
The tasty bit of this particular patent is that Apple's tech wouldn't just charge one device, but multiple ones. Here are more details on the iPhone 6 wireless charging patent.
Meanwhile, a further Apple patent seems to imply that future iPhones will be able to adjust volume as you move them away from your ear.
And could the iPhone 6 really have 3D? It's unlikely, but the rumours keep on coming.

This News is copy from http://www.techradar.com
the orginal links of this news is http://www.techradar.com/news/phone-and-communications/mobile-phones/iphone-6-release-date-news-and-rumours-1099865

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Get free Payoneer Master Card in Nepal

In Nepal and other Asian Countries of withdraw our money from online is very hard.

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Then active your Card according to given information  and got free $25 with this master card. Thank you !

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Scientists make 'bug-eye' camera

A digital camera that functions like an insect's compound eye is reported in the journal Nature this week.
It comprises an array of 180 small lenses, which, along with their associated electronics, are stretched across a curved mounting.

The prototype currently has few pixels, so its images are low-resolution.

But the device displays an immense depth of field, and a very wide-angle view that avoids the distortion seen in standard camera lenses.

The development team, led from the University of Illinois at Urbana-Champaign, US, believes its new imaging system could eventually find uses in surveillance and for endoscopic investigations of the human body.

In their report, the researchers also suggest such cameras could be fitted to tiny aerial vehicles one day that behaved like robotic insects.

At the moment, the "bug-eye" system's vision is comparable to that enjoyed by some ants and beetles.

The expectation, however, is that the array can be greatly enlarged.

"The compound design of the fly's eye incorporates perhaps 28,000 small eyes, or ommatidia," explained team-member Dr Jianliang Xiao from the University of Colorado at Boulder, US. "That's the direction we want to move in," he told BBC News.

In an insect, each ommatidium in the compound eye has a corneal lens, a crystalline cone and a light-sensitive organ at its base. The ommatidia work in unison to build a picture of the world.

In the artificial version, microlenses sit above photodetectors and other electronics, and software stitches together the individual signals.

This whole arrangement is fabricated flat and then moulded to a hemispherical shape to give a 160-degree view. The latest generation of stretchable electronics was key to achieving the desired geometry.

Scientists are keen to exploit the advantages of compound eyes.

For one, they show remarkable depth of field - they can focus on objects at different distances at the same time. They also do not suffer from the aberrations seen in single lens systems when viewing off-axis objects. A good example is the huge distortion observed in wide-angle camera lenses such as the fish-eye.

For an insect, their compound system capabilities make them very sensitive to movement.

"Our system could eventually be used in surveillance cameras. One device of this kind could see 180 degrees. If you had two, you could then conceivably see the whole field of view," said Dr Xiao.

Alexander Borst and Johannes Plett are from the Max-Planck-Institute of Neurobiology in Martinsried, Germany. They are not connected with the research but speculated for Nature on other possible future applications.

"Picture the following: a palm-sized micro aerial vehicle uses an artificial faceted eye to navigate autonomously through a collapsed building while other sensors onboard scan the environment for smoke, radioactivity or even people trapped beneath rubble and debris,"
This News is copy from bbc technology news 1 May 2013 
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Facebook grows up

Facebook's results last night painted a somewhat mixed picture - advertising revenues growing, with mobile really taking off, but profits lower than analysts had forecast.
One thing was, however, clear. This company is growing in all sorts of ways, and with that comes growing pains.

After all those anecdotal reports that "none of my friends use it anymore", and various research firms hinting at falling user figures, the hard numbers say Facebook is still expanding. Monthly active users rose to 1.1 billion, meaning 100 million new users had arrived in the last six months.

Now many of them will be in developing countries - after all so many people have already joined in places like the US and UK that Facebook is reaching saturation point. But the company insists, that contrary to reports, it is still growing in both of those countries.

In the UK, user numbers hit 33 million in December, and I'm told there has been a modest increase since then. In the US, there has also been a rise from December's 174 million monthly users, though it looks like the growth story there is nearing its end.

There has been a decline in use of the network on the desktop but that was more than made up for by the growth in mobile use, where advertising returns have proved higher. And that rapid transformation of the firm into a mobile advertising business will be the most encouraging aspect of the figures for anyone who was brave enough to buy Facebook shares at their sky-high IPO valuation last year.

Mind you, there's growth too in the cost of running the business, as more staff are taken on. The UK operation is among those expanding rapidly, as I found out this week when I met the engineer in charge of one of the firm's most important ventures, Graph Search.

Lars Rasmussen has moved to London to head up an expanded engineering operation, and he is in the process of recruiting another couple of dozen people to work mainly on the search project. (How easy that process proves will be an interesting test of the computer science skills available in the UK.)

Each of the recruits will then spend four to six weeks at a boot camp in California, learning how Facebook writes code and attending lectures by its top executives.

That sounds like an expensive process and a contrast to the early days of a business where Mark Zuckerberg just called up a few friends for all-night coding sessions fuelled by pizza.

But if the London team can then help take Graph Search to the next stage, where users will be able to comb the network's newsfeed for all kinds of information, then it will have been a worthwhile investment. So far, Facebook's limited search bar has not done anything to worry its rivals. But if it becomes a conduit to breaking news, then the likes of Twitter may have to sit up and take notice.

Like an awkward teenager, however, Facebook is finding that growing up can be painful. Yesterday's story about its refusal to remove horrifying decapitation videos, followed by a rapid U-turn, is a case in point.

Like so many other web giants, Facebook just wants to be seen as a technology platform enabling its users to do all sorts of cool stuff without any interference. But it has grown into a massive media player, where more than a billion people - many of them under 18 - come in search of entertainment.

That means a constant spotlight is being shone on the firm's policies, with parents and regulators increasingly worried about an environment where young people now spend so much time. Welcome to adulthood, Mr Zuckerberg.
This News is copy from bbc technology news 2 May 2013 

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Mobile ads to push Twitter ad revenue near $1 billion in 2014: report

(Reuters) - Twitter will generate nearly $1 billion in ad revenue next year due to a surge in mobilea dvertising on its Web microblogging service, according to a report released on Wednesday.

Mobile ads will account for roughly half of Twitter's advertising revenue this year and will make up more than 60 percent of the company's ad revenue by 2015 according to research firm eMarketer.



The increasing popularity of Twitter's mobile ads - introduced in March 2012 - caused eMarketer to raise its 2014 ad revenue estimates for Twitter to $950 million, versus its previous estimate of roughly $800 million. Twitters' ad revenue this year will total $582.8 million, according to the report, roughly double what it was in 2012.

Twitter, which allows people to share 140-character messages on its online service, is privately held and does not disclose financial results.

With more than 200 million monthly active users, Twitter is among the Web's most popular social networking services, along with Facebook Inc, and is expected by analysts to float shares to the public within two years.

As consumers increasingly access the Web on smartphones, mobile ads have become increasingly important to the businesses of Web companies such as Facebook and Google Inc. Facebook said in January that its mobile ad revenue doubled from the third quarter to the fourth quarter, representing roughly 23 percent of its $1.33 billion in fourth-quarter ad revenue.

"Twitter has ultimately benefited from the increased focus on mobile by competitors like Googleand Facebook, which have both expanded their own mobile ad offerings and worked to convince advertisers to shift dollars to mobile devices," eMarketer said on Wednesday.

eMarketer said its revenue forecasts are based on analysis of reports that track media buying trends, Twitter usage data and interviews with executives at advertising agencies, online publishers and others.

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Samsung Galaxy S4 vs. Nexus 4

Nexus and Galaxy. The two brands represent opposing ends of the Android spectrum. Nexus devices have always been Google’s pure, untarnished vision of its platform. Samsung’s wildly-successful Galaxy devices, meanwhile, still use Android, but also threaten to overshadow it. What happens when you put the best of each side-by-side? Read on, as we compare the specs and features of the Samsung Galaxy S4 and LG Nexus 4

Size

 The Nexus 4 is a bit shorter, narrower, and thicker. But – when you look at smaller rivals like the iPhone 5, or phablets like the Galaxy Note II – you realize that the size differences here are pretty minor.

Build

It’s easy to poo-poo on Samsung’s use of plastic, but you could also argue that it allows the company to focus more of its expenses on things like 1080p displays and octa-core processors.
The front and back of the Nexus 4, meanwhile, are made of Gorilla Glass. LG helpfully placed a rubbery band around the phone’s edges, allowing for an easier and more comfortable grip.
That extra grip is a good thing, considering that – no matter how strong Gorilla Glass is – it’s going to be more prone than plastic to cracks and scratches.
Both sets of materials have their pros and cons, and this is probably one of the first big areas you’ll want to think about when deciding between these two handsets.

Weight

It’s impressive that LG managed to make the glass Nexus 4 only 9 g (0.32 oz.) heavier than the plastic Galaxy S4. We suspect the GS4’s larger battery (see below) has something to do with that.

Display

The Galaxy S4’s display is both larger and sharper than the Nexus 4’s screen.
Once you get to a certain level of sharpness (probably around 300 pixels per inch), cramming in more pixels ceases to play as big of a part. Both of these screens are razor sharp, and your eyes won’t likely see any individual pixels on either one.
That means the display technology will play a bigger part. The Galaxy S4’s Super AMOLED has blacker blacks (technically no light comes through black pixels) but hyper-saturated colors. The Nexus 4’s IPS display, meanwhile, leads to better viewing angles and more accurate color reproduction.

Processor

The Nexus 4’s Snapdragon S4 Pro chip is a beast. Ditto for both versions of the Galaxy S4: the North American version’s quad core Snapdragon 600 and the international version’s octa core Exynos chip.
In terms of benchmarks, the Galaxy S4 is going to beat the Nexus 4. In terms of experience, though, you probably won’t see much of a difference. All three processors should blaze through just about any app you throw at them.

RAM

 Our two entrants are tied up, each with 2 GB of RAM.

Storage

This is a big-time advantage for the Galaxy S4. The 8 GB offered for the entry-level Nexus 4 isn’t a lot. Add to that the Nexus 4’s lack of an SD card slot, and you could find yourself cramped for free space.
Fortunately, the 16 GB edition of the Nexus 4 only costs US$50 more than the 8GB version.
There’s also the matter of off-contract pricing. Namely, the Nexus 4 was built for it, and the Galaxy S4 wasn’t. Carriers haven’t yet announced pricing for the GS4, but you can bank on around US$200 or so on-contract. The Nexus 4 starts at $300 off-contract.

Wireless

 

Here’s another tough call, as there’s no LTE for the Nexus 4. It does support HPSA+, which offers faster than 3G speeds ... but LTE it is not. You’ll also need to sign up with a GSM carrier for the Nexus 4, as CDMA (that's Verizon and Sprint in the U.S.) networks aren’t supported.

Cameras

 

Megapixels make for an easy-to-read metric for these graphics, but they make for a far-from-perfect representation of camera quality. We’ve yet to put the Galaxy S4 through the paces, but you don’t have to worry about the Nexus 4’s shooter. It takes great shots, and can easily replace a point-and-shoot.

Battery

 

Here’s another stat that isn’t an absolute indicator of experience, as many other factors determine actual battery life.
The Nexus 4 offers solid battery life: under typical use, it will easily last a full day. Does that mean the Galaxy S4 – with more capacity – will get better uptime? Maybe, maybe not. When you consider that it has LTE and a display with over a million extra pixels, it may need that extra capacity to match the Nexus 4’s uptime.

Software

 

One of the most surprising things about the Galaxy S4 is that it will ship with the latest version of Android, 4.2.2.
But you’d be forgiven for thinking the Galaxy S4 runs its own operating system. Samsung is increasingly hiding its Android roots under a heavy layer of “TouchWiz” – complete with a bevy of crazy features (facial-recogntion scrolling, fitness tracking, photos with accompanying audio clips ...).
Meanwhile, the Nexus 4 – like all Nexus devices – runs “pure Google,” or stock Android. What you see is exactly what Android’s creators and designers intended - and nothing more.
Though the two phones run the same version of Android right now, that may not last long. Without manufacturer skins or carrier crapware, the Nexus 4 will be first to receive future Android updates. Samsung has improved its support for updates, but GS4 owners will have to wait much longer for Key Lime Pie (or whatever the next major version is called) than Nexus 4 owners will.

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Technology Lab / Information Technology Why Microsoft’s new Office 2013 license may send users to Google Docs

If you buy a perpetual retail license for Office 2013, it will be locked to the computer you first install it on, forever. Buy a new PC and you won't be allowed to install your existing copy of Office on it, even if you wipe the disk of the old PC. You'll have to splurge for a new one.

This is a change in policy from Office 2010. Office 2010 permitted a single transition from one PC to a new one. It's not, however, an entirely new policy: OEM pre-installed versions of Office (and Windows) are similarly tied to their (OEM) hardware and can't migrate. Adam Turner at The Age first pressed Microsoft for clarification over what its "single PC" constraint actually meant, and he noted the newly aligned OEM and retail licenses.

It's difficult to see the wisdom in this change. It's not a big change, but it's not a nice one, either.

Retail sales make up a minority of the Office business. Microsoft doesn't habitually report the exact level of retail sales, but we can perhaps make estimates based on the information the company does provide.

The Microsoft Business Division (MBD), the reporting group within the company that includes Office, Exchange, SharePoint, Dynamics, and Lync, reported last quarter that 60 percent of its revenue is from multi-year subscriptions—Software Assurance plans. The remaining 40 percent is what Microsoft calls "transactional;" one-off purchases, encompassing both OEM preinstalls and boxed copies bought online or in bricks-and-mortar stores.

The company's 2012 annual report also has some useful information. The report says that in its 2012 financial year, 80 percent of its sales were to businesses, 20 percent to consumers. A reasonable inference is that business sales include essentially all of the multi-year revenue (as it is only this year that Microsoft offered a consumer-oriented subscription, Office 365 Home Premium), and about half of the transactional revenue.

In the annual report, Microsoft also emphasizes that while the 80 percent of business revenue is relatively consistent, driven primarily by the number of information workers, the 20 percent is much more dependent on the broader level of PC sales and product launches. This in turn suggests that a significant proportion of it is made up of OEM sales, for which there's been no relevant licensing change.

One final data point: Windows division reports that around 75-80 percent of its revenue comes from OEM sales.

Even optimistically, retail revenue is unlikely to account for more than 20 percent of MBD revenue, and it might be a lot less. If MBD's transactional revenue has the same level of OEM sales as Windows, it would mean that retail sales were no more than 10 percent of revenue. It's a nice business, but it's not Microsoft's major money-maker, and it's not representative of the majority of Office customers.

It's spectacularly unlikely that this licensing change is going to increase that revenue in any meaningful way. It's also unlikely to make any material difference to many people. The only people who would be impacted are those who migrate software between systems, and while that's common among enthusiasts, it's probably not mainstream: the mainstream solution is to buy an OEM preinstall license, or buy retail Office alongside a new PC, use that PC for 5 years (or more) until it no longer works, then throw it away and repeat the process.

Transplanting software from one machine to another (or invoking Ship of Theseus-like questions over when an upgraded PC becomes a new one) is something for enthusiasts—perhaps explaining why the OEM license restrictions have for the most part been shrugged off—and even if Microsoft managed to generate some extra sales to those enthusiasts, it's never going to amount to very much.

But that is arguably missing the point. The software giant is penalizing a small, typically vocal group of users and provoking many column inches of complaint. This is a change that looks bad. It makes Microsoft appear petty and small-minded, determined to wring every last dollar from its customer base. And while that may in fact be the case, doing so in such a brazen manner does nothing more than get people's backs up.

The underlying reason for the change is almost certainly not any direct revenue generated by additional sales. Rather, it's yet another incentive to buy an Office 365 Home Premium subscription. The $99 a year subscription lets you use Office 2013 on up to five PCs, and those licenses float; you can decommission old PCs and move licenses to new ones as necessary. That's the carrot; the stick is the price hike and additional restrictions on perpetual licenses.

The problem is that there are plenty of customers who reject the subscription model out of hand, either because they find an overt rental model offensive or because they don't place much value in having the current version of the software and hence find occasional perpetual licenses to be more cost effective. The retail license change doesn't fundamentally alter that calculus for those users. It just makes clear that Microsoft doesn't really like such users.

So they probably won't flock to Office 365. What they might well do instead is download LibreOffice 4 or switch to Google Docs—moves that hurt Microsoft far more than simply moving an Office install from an old computer to a new one. Those enthusiasts could take the mass market with them. It's happened before, with Firefox and Chrome. It can happen again to Office. Licensing changes that alienate users make that only more likely to happen.

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The world's first completely artificial human

The British roboticist designers are made the world's first completely artificial human. According to creators, He's the worlds first bionic man. Comprising artificial organs, Synthetic blood, robotic limbs and a human face. And as if that's not enough, he can speak and also listen and artificial organs including a pancreas, kidney, spleen, and trachea. The artificial human was created for a Channel 4 documentary called How to Build a Bionic Man. The project cost £640k ie.
$1 million. and showcases the latest achievements and advancements in bionic technology and prosthetic science. “Strictly speaking, he’s not a robot,” Channel 4’s science editor Tom Clarke says in a report (below) about the bionic creation. “His parts aren’t designed to work together, but each one either is, or soon could be, part of a living human being.” Rex’s two-meter-tall ‘body’, built with currently available bionic and prosthetic technology, includes a prosthetic face, hands, hips, knees and feet as well as cochlear implants which enable him to hear and retinal implants that allow him to sense objects in front of him. Speech synthesis technology means Rex can make sense of

simple statements and even respond to some questions.
Artificial blood pumps through his artificial organs, which include a heart, kidney and pancreas. He also has a spleen and trachea. The stomach is missing, but one imagines it won’t be too long before the science boffins fix him up with one of those, too.

“Throughout history people have always sought to enhance themselves to overcome disabilities or to become bigger, better, stronger and faster,” Clare Matterson of the Wellcome Trust, which is funding the exhibition, Please watch video.

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Nanotechnology

Nanotechnology is science, engineering, and technology conducted at the nanoscale, which is about 1 to 100 nanometers. Nanoscience and nanotechnology are the study and application of extremely small things and can be used across all the other science fields, such as chemistry, biology, physics, materials science, and engineering. Nanotechnology is not just a new field of science and engineering, but a new way of looking at and studying .
How Nanotechnology Is Started
 The ideas and concepts behind nanoscience and nanotechnology started with a talk entitled “There’s Plenty of Room at the Bottom” by physicist Richard Feynman at an American Physical Society meeting at the California Institute of Technology (CalTech) on December 29, 1959, long before the term nanotechnology was used. In his talk, Feynman described a process in which scientists would be able to manipulate and control individual atoms and molecules. Over a decade later, in his explorations of ultraprecision machining, Professor Norio Taniguchi coined the term nanotechnology. It wasn't until 1981, with the development of the scanning tunneling microscope that could "see" individual atoms, that modern nanotechnology began.
Fundamental Concept  

It’s hard to imagine just how small nanotechnology is. One nanometer is a billionth of a meter, or 10^-9 of a meter. Here are a few illustrative examples:

• There are 25,400,000 nanometers in an inch
• A sheet of newspaper is about 100,000 nanometers thick
• On a comparative scale, if a marble were a nanometer, then one meter would be the size of the Earth

Nanoscience and nanotechnology involve the ability to see and to control individual atoms and molecules. Everything on Earth is made up of atoms—the food we eat, the clothes we wear, the buildings and houses we live in, and our own bodies.

But something as small as an atom is impossible to see with the naked eye. In fact, it’s impossible to see with the microscopes typically used in a high school science classes. The microscopes needed to see things at the nanoscale were invented relatively recently—about 30 years ago.

Once scientists had the right tools, such as the scanning tunneling microscope (STM) and the atomic force microscope (AFM), the age of nanotechnology was born.

Although modern nanoscience and nanotechnology are quite new, nanoscale materials were used for centuries. Alternate-sized gold and silver particles created colors in the stained glass windows of medieval churches hundreds of years ago. The artists back then just didn’t know that the process they used to create these beautiful works of art actually led to changes in the composition of the materials they were working with.

Today's scientists and engineers are finding a wide variety of ways to deliberately make materials at the nanoscale to take advantage of their enhanced properties such as higher strength, lighter weight, increased control of light spectrum, and greater chemical reactivity than their larger-scale counterparts.

 

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Happy dashain

Wish you all of our respective visuter Happy dashain 2069
********
Ramchandra poudel
&
allscience.com.np family
***

On 10/17/12, Ramchandra poudel <rcpoudel3@gmail.com> wrote:
> Mutation is defined as the sudden change in heritable cheractor.
> Mutation occurring naturally is called natural mutation and occurring
> artificially is called induced mutation in general there are 2 type of
> mutation they are
> (1) point or micro mutation
> (2) large or macro mutation
>

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What is Mutation

Mutation is defined as the sudden change in heritable cheractor.
Mutation occurring naturally is called natural mutation and occurring
artificially is called induced mutation in general there are 2 type of
mutation they are
(1) point or micro mutation
(2) large or macro mutation

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Science

Science is every thing in this morden era

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Albert Einstein

Albert Einstein (1879-1955), German-born American physicist and Nobel laureate, best known as the creator of the special and general theories of relativity and for his bold hypothesis concerning the particle nature of light. He is perhaps the most well-known scientist of the 20th century.Einstein was born in Ulm on March 14, 1879, and spent his youth in Munich, where his family owned a small shop that manufactured electric machinery. He did not talk until the age of three, but even as a youth he showed a brilliant curiosity about nature and an ability to understand difficult mathematical concepts. At the age of 12 he taught himself Euclidean geometry.
Einstein hated the dull regimentation and unimaginative spirit of school in Munich. When repeated business failure led the family to leave Germany for Milan, Italy, Einstein, who was then 15 years old, used the opportunity to withdraw from the school. He spent a year with his parents in Milan, and when it became clear that he would have to make his own way in the world, he finished secondary school in Aarau, Switzerland, and entered the Swiss Federal Institute of Technology in Zürich. Einstein did not enjoy the methods of instruction there. He often cut classes and used the time to study physics on his own or to play his beloved violin. He passed his examinations and graduated in 1900 by studying the notes of a classmate. His professors did not think highly of him and would not recommend him for a university position.
Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights reserved.

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Amino Acid

Amino Acids, important class of organic compounds that contain both the amino (8NH₂) and carboxyl (8COOH) groups. Of these acids, 20 serve as the building blocks of proteins (see Protein). Known as the standard, or alpha, amino acids, they comprise alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine. All 20 are constructed according to a general formula:

As the formula shows, the amino and carboxyl groups are both attached to a single carbon atom, which is called the alpha carbon atom. Attached to the carbon atom is a variable group (R); it is in their R groups that the molecules of the 20 standard amino acids differ from one another. In the simplest of the acids, glycine, the R consists of a single hydrogen atom. Other amino acids have more complex R groups that contain carbon as well as hydrogen and may include oxygen, nitrogen, or sulfur, as well.

When a living cell makes protein, the carboxyl group of one amino acid is linked to the amino group of another to form a peptide bond. The carboxyl group of the second amino acid is similarly linked to the amino group of a third, and so on, until a long chain is produced. This chainlike molecule, which may contain from 50 to several hundred amino acid subunits, is called a polypeptide. A protein may be formed of a single polypeptide chain, or it may consist of several such chains held together by weak molecular bonds. Each protein is formed according to a precise set of instructions contained within the nucleic acid (see Nucleic Acids), which is the genetic material of the cell. These instructions determine which of the 20 standard amino acids are to be incorporated into the protein, and in what sequence. The R groups of the amino acid subunits determine the final shape of the protein and its chemical properties; an extraordinary variety of proteins can be produced from the same 20 subunits.

The standard amino acids serve as raw materials for the manufacture of many other cellular products, including hormones (see Hormone) and pigments. In addition, several of these amino acids are key intermediates in cellular metabolism (see Metabolism).

Most plants and microorganisms are able to use inorganic compounds to make all the amino acids they require for normal growth. Animals, however, must obtain some of the standard amino acids from their diet in order to survive; these particular amino acids are called essential. Essential amino acids for humans include lysine, tryptophan, valine, histidine, leucine, isoleucine, phenylalanine, threonine, methionine, and arginine. They are found in adequate amounts in protein-rich foods from animal sources or in carefully chosen combinations of plant proteins.

In addition to the amino acids that form proteins, more than 150 other amino acids have been found in nature, including some that have the carboxyl and amino groups attached to separate carbon atoms. These unusually structured amino acids are most often found in fungi and higher plants.

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Monkey

Monkey (animal), any of about 160 species of primates that have grasping hands, forward-facing eyes, and highly developed brains. Most monkeys also have tails, a characteristic that distinguishes them from their larger primate cousins, the apes. Monkeys are highly skilled climbers, and most spend much of their lives in trees. Some have prehensile tails—that is, tails capable of grasping—that they can use as a fifth limb while foraging for food or climbing.

Zoologists classify monkeys into three distinct families: marmosets, Capuchin-like monkeys, and Old World monkeys. Marmosets and Capuchin-like monkeys are found only in Central and South America and are known collectively as New World monkeys. Marmosets are dainty animals with luxurious fur, which is sometimes strikingly colored. One species, the pygmy marmoset, is the world's smallest monkey, measuring just 30 cm (12 in) long, at least half of which is tail, and weighing as little as 113 g (4 oz) when fully grown. The average life span of a pygmy marmoset in the wild is 10 to 12 years. By comparison, the Capuchin-like monkeys, which include capuchin monkeys, douroucoulis, spider monkeys, woolly monkeys, and howler monkeys, are more robust, although they are still lightly built. Howler monkeys, for example, are among the largest species and measure up to 1.8 m (6 ft) from the top of the head to the tip of the tail. Even so, their maximum weight is only about 10 kg (22 lb). Howler monkeys living in the wild have an average life span of around 16 to 20 years. Many New World monkeys have prehensile tails, and all have broad noses with sideways-opening nostrils.

Old World monkeys include guenons, mangabeys, colobus monkeys, macaques, langurs, and baboons. Compared to New World monkeys, their noses are narrower and have downward-opening nostrils. Old World monkeys do not have prehensile tails; instead, most use their tails simply for balance. As a result, these monkeys are less acrobatic than their New World cousins. Most Old World monkeys spend at least part of their time on the ground. While many are careful not to stray too far from the protective cover of trees, baboons are strong and aggressive enough to defend themselves in the open. Armed with fearsome canine teeth and weighing up to 41 kg (90 lb), male baboons are more than a match for many predators. A baboon in the wild can live as long as 30 years.

PREDATORS

The predators of Capuchin-like monkeys are humans and birds of prey. The predators of marmosets include small cats, birds of prey, and snakes. The predators of macaques include large cats, such as leopards, tigers, and panthers, and large snakes, such as pythons. The predators of langurs and colobus monkeys include large cats, humans, and some birds of prey. The biggest threat to all monkeys, however, is the loss of habitat

RANGE AND HABITAT

Monkeys are restricted to South and Central America, Africa, and the southern parts of Asia. Most monkeys live in the forests of the tropics and subtropics, where warm temperatures ensure a year-round supply of food. In rain forests, where food is abundant, monkeys often stay in the same area all year, but in drier habitats, they have to range further afield, possibly traveling more than 18 km (10 mi) a day.

Although most monkeys live in warm climates, some do survive in extreme environments. The Japanese macaque manages to survive the winter cold on the Japanese island of Honshū—the only nonhuman primate to survive that far north. A few tropical monkeys survive on high mountains well above the snow line, some at elevations as high as 4,000 m (13,000 ft). These high-altitude species include the Asian snub-nosed langurs, the African vervet, and several species of macaques. Monkeys can also survive in extreme deserts. In southwest Africa, for example, a troop of yellow baboons lives in the Namib Desert, where rainfall averages just a few inches a year.

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