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Tags (9027) : technology
A green transformation for pharmaceuticals
21/11/2014
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CIENCIA ON LINE
A more sustainable approach to a bond-forming reaction extensively used in the pharmaceutical and fine chemical industries has now been developed. The team used the solvent-free, catalytic reaction to produce high yields of a wide range of amides, including the antidepressant moclobemide and other...
Fluorescent nanoprobe could become a universal, noninvasive method to identify and monitor tumors
21/11/2014
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CIENCIA ON LINE
Researchers have developed a hybrid metal-polymer nanoparticle that lights up in the acidic environment surrounding tumor cells. Nonspecific probes that can identify any kind of tumor are extremely useful for monitoring the location and spread of cancer and the effects of treatment, as well as...
Biomarker could provide early warning of kidney disease in cats
20/11/2014
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CIENCIA ON LINE
A new biomarker called 'SDMA' has been developed that can provide earlier identification of chronic kidney disease in cats, which is one of the leading causes of their death. When a test is commercialized, it could help pet owners add months or years to the life of their cat. Fuente :...
It's filamentary: How galaxies evolve in the cosmic web
20/11/2014
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CIENCIA ON LINE
How do galaxies like our Milky Way form, and just how do they evolve? Are galaxies affected by their surrounding environment? Astronomers now proposes some answers. The researchers highlight the role of the 'cosmic web' -- a large-scale web-like structure comprised of galaxies -- on the evolution...
Salinity counts when it comes to sea level
20/11/2014
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CIENCIA ON LINE
Using ocean observations and a large suite of climate models, scientists have found that long-term salinity changes have a stronger influence on regional sea level changes than previously thought. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/F...
Quantum mechanical calculations reveal the hidden states of enzyme active sites
20/11/2014
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CIENCIA ON LINE
Enzymes carry out fundamental biological processes such as photosynthesis, nitrogen fixation and respiration, with the help of clusters of metal atoms as 'active' sites. But scientists lack basic information about their function because the states thought to be critical to their chemical...
Darwin 2.0: New theory on speciation, diversity
20/11/2014
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CIENCIA ON LINE
It has long been thought that dramatic changes in a landscape like the formation of the Andes Mountain range or the Amazon River is the main driver that initiates species to diverge. However, a recent study shows that speciation occurred much later than these dramatic geographical changes....
Humans and mice: Similar enough for studying disease and different enough to give us new clues about evolution
19/11/2014
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CIENCIA ON LINE
Scientists have completed an exhaustive description of the mouse's functional genome elements and their comparison with the human genome. Comparing humans and mice enables us to better understand mammalian biology and evolution, as well as contributing new information on the use of mice as animal...
'Green revolution' changes breathing of the biosphere: Stronger seasonal oscillations in carbon dioxide linked to intensive agriculture
19/11/2014
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CIENCIA ON LINE
The intense farming practices of the 'Green Revolution' are powerful enough to alter Earth's atmosphere at an ever-increasing rate, boosting the seasonal amplitude in atmospheric carbon dioxide to about 15 percent over the past five decades. That's the key finding of a new atmospheric model, which...
Thin film produces new chemistry in 'nanoreactor'
19/11/2014
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CIENCIA ON LINE
Physicists have discovered a new manganese compound that is produced by tension in the crystal structure of terbium manganese oxide. The technique they used to create this new material could open the way to new nanoscale circuits. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/l...
Business culture in banking industry favors dishonest behavior
19/11/2014
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CIENCIA ON LINE
In the past years, there have often been cases of fraud in the banking industry, which have led to a considerable loss of image for banks. Are bank employees by nature less honest people? Or does the business culture in the banking sector favor dishonest behavior? New findings indicate that the...
Rosetta continues into its full science phase
19/11/2014
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CIENCIA ON LINE
With the Philae lander's mission complete, Rosetta will now continue its own extraordinary exploration, orbiting Comet 67P/Churymov-Gerasimenko during the coming year as the enigmatic body arcs ever closer to our Sun. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/C...
Two sensors in one: Nanoparticles that enable both MRI and fluorescent imaging could monitor cancer, other diseases
18/11/2014
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CIENCIA ON LINE
Chemists have developed new nanoparticles that can simultaneously perform magnetic resonance imaging and fluorescent imaging in animals. Such particles could help scientists to track specific molecules produced in the body, monitor a tumor's environment, or determine whether drugs have successfully...
Musicians show advantages in long-term memory
18/11/2014
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CIENCIA ON LINE
Psychologists have demonstrated a link between musical training and long-term memory advantages. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Q...
A bird's-eye view of the protein universe: First global picture of the evolutionary origins of proteins
18/11/2014
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CIENCIA ON LINE
How exactly did proteins first come to be? Do they all share a single common ancestor, or did proteins evolve from many different origins? Forming a global picture of the protein universe is crucial to addressing these and other important questions. Now, new research is providing a first step...
Jurassic climate of large swath of western US was more complex than previously known: Unexpected abrupt change from arid to wet
18/11/2014
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CIENCIA ON LINE
Climate over a large swath of the western US was more complex during the Jurassic than previously known, according to new research. Instead of a gradual transition from dry to wetter, chemical analysis of ancient soils reveals an unexpected abrupt change, say paleontologists. Samples were from the...
Using science to open way to 'blue economy'
18/11/2014
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CIENCIA ON LINE
New science and software make Belize coastal zone management plan better for people and the environment. With historic expansion of coastal and ocean development, ecosystems like coral reefs and mangrove forests are put at unprecedented risk. Yet, planners often lack good information about how...
Graphene/nanotube hybrid benefits flexible solar cells
17/11/2014
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CIENCIA ON LINE
Scientists have created a graphene/nanotube cathode that may make cheap, flexible dye-sensitized solar cells more practical. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/b...
Engineers efficiently 'mix' light at the nanoscale
17/11/2014
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CIENCIA ON LINE
Researchers have engineered a nanowire system that could pave the way for photonic computing, combining two light waves to produce a third with a different frequency and using an optical cavity to amplify the intensity of the output to a usable level. Fuente :...
Hiding in plain sight: Elusive dark matter may be detected with GPS satellites
17/11/2014
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CIENCIA ON LINE
The everyday use of a GPS device might be to find your way around town or even navigate a hiking trail, but for two physicists, the Global Positioning System might be a tool in directly detecting and measuring dark matter, so far an elusive but ubiquitous form of matter responsible for the...
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