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|SAN FRANCISCO Black Justin Evans Jersey , March 23 (Xinhua) -- Researchers have refined a satellite imaging technique to better isolate the signal from plants alone, namely fluorescence.
Using the sunlight reflected off plants, satellite have collected agricultural data since 1972 and proven valuable for managing crops or detecting deforestation. However, current methods are often contaminated by light reflected by other things like clouds, soil and snow.
A 2011 breakthrough allowed researchers to detect fluorescence Black O. J. Howard Jersey , the light emitted by the plants themselves.
Now, researchers at Stanford University and the Carnegie Institution for Science have developed a new approach that builds off the fluorescence approach by measuring only the fraction of light reflected by plants, screening out "background noise."
"The causal chain from the plants to the photons to the images is clear," said Chris Field, the Melvin and Joan Lane Professor for Interdisciplinary Environmental Studies at Stanford University and co-author of a paper published Wednesday in Science Advances. "This new index is clearly powerful Ali Marpet Jersey , but also simple and elegant."
The new approach avoids previous shortcomings and provides a relatively affordable way to collect data, as it doesn't require launching new satellites with expanded capabilities. It makes better use of existing data, according to lead author Grayson Badgley, a graduate student in Stanford's School of Earth, Energy & Environmental Sciences. "With the satellites we've had since 1978 Donovan Smith Jersey , you can more directly infer how healthy plants are and how well they're growing," Badgley was quoted as saying in a news release.
That, in turn, is expected to make more accurate and timely measurements of crop yields, plant health Noah Spence Jersey , drought, forest clearing and a range of other issues.
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When graphics and colors are the point of concern, the iphone provide its users sharp and crispy images. Watching video clips and photos in your iphone are as if you are watching in your PC or TV sets. No doubt one of the great features that this incredible device integrated with is 3g LED which make the iphone different from other phones. Though Vernon Hargreaves III Jersey , there are other phones with similar specs available in market.
If the iphone will lack of the 3g LED screen, then the value of iphone will not remain same exactly what it has now. But all iphone owner are not lucky with their devices because like any other devices, the iphone screen too got damaged either by accidentally or by any other reason. Though, it is unfortunate but it is true. Iphone screen got damaged due to number of reasons but most probable reasons are accidental dropping of it or getting damaged by spilling of liquid. The broken iphone screen can be fixed easily but not always. Sometime it becomes critical and the only chance of restoring it is to send it to the company. If the damage is too complicated then there is a chance of getting it back by manufacturer in previous state. In that case you have to buy a new one for you. And it is not a smooth option as you need to invest a lot of money for buying the device.
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by Xinhua writer Gao Xing
MEXICO CITY, Dec. 27 (Xinhua) -- Latin American countries are aspiring to speed up integration to cushion the impact of a weak world economy and meet the demand of their global trade partners especially China.
In a new push toward greater regional integration, four Latin American countries agreed this week to work together on a major infrastructure project that would benefit them all.
Chile, Argentina Chris Godwin Jersey , Brazil and Paraguay planed to build a coast-to-coast corridor between the Atlantic and Pacific to facilitate the flow of goods and boost exports.
All members and associate members of trade and integration bloc Mercosur (Southern Common Market), the countries hope to connect and upgrade roadways, waterways, ports, airports and rail lines from the Brazilian city of Campo Grande Justin Evans Jersey , in the southern state of Mato Grosso del Sur, to the Chilean city of Iquique, in the country's north.
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