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Create your own Custom Search Engine
ძიება მსოფლიოს უნივერსიტეტების ღია სამეცნიერო არქივებში

Create your own Custom Search Engine

ღონისძიების ჩატარება ეროვნულ სამეცნიერო ბიბლიოთკაში

თქვენი ღონისძიების ჩასატარებლად ეროვნულ სამეცნიერო ბიბლიოთკაში, გთხოვთ, შეავსოთ სააპლიკაციო ფორმა და გადგმოგზავნოთ ელექტრონულ მისამართზე: infopr@sciencelib.ge

მსოფლიო სამეცნიერო სიახლეები

აზერბაიჯანში სამი წლით პატიმრობა მიუსაჯეს ოპოზიციონერ პოლიტიკოს გოზელ ბაირამლის

აზერბაიჯანში სამი წლით პატიმრობა მიუსაჯეს ოპოზიციური „სახალხო ფრონტის პარტიის“ თავმჯდომარის მოადგილეს, გოზელ ბაირამლის. ის დამნაშავედ ცნეს აზერბაიჯანის საზღვარზე არადეკლარირებული ნაღდი ფულის კონტრაბანდაში, რაც ბაირამლის ადვოკატს პოლიტიკურად მოტივირებულ დევნად მიაჩნია. ბაირამლი დააკავეს 2017 წლის მაისში, როცა ის საქართველოდან აზერბაიჯანში ბრუნდებოდა. აზერბაიჯანის სასაზღვრო სამსახურის ცნობით, ბაირამლის უპოვეს არადეკლარირებული 12 000 დოლარი. მაგრამ ოპოზიციონერი პოლიტიკოსი აცხადებს, რომ...

TV – « Complotisme, les alibis de la terreur »

lemonde.fr - Culture - სამ, 23/01/2018 - 20:30
A voir aussi ce soir. Un documentaire éclairant sur la façon dont le djihadisme utilise et nourrit les thèses complotistes pour justifier la terreur (sur France 3 à 23 h 20).

PS4 : un moddeur fait tourner des jeux PS2 en exploitant l’émulateur de la console

Yahoo! Actualités: Les titres Sciences - სამ, 23/01/2018 - 20:30
En se basant sur des outils de piratage, un moddeur a réussi à exploiter l'émulateur PS2 disponible sur PS4 afin de faire tourner des jeux PS2 sans passer par la case PlayStation Store.

China Declared World's Largest Producer of Scientific Articles

Scientific American - სამ, 23/01/2018 - 20:30
International competition is increasing, but the United States remains a scientific powerhouse -- Read more on ScientificAmerican.com

ქუთაისში ისტორიული და კულტურული ობიექტების რეკონსტრუქცია იგეგმება

ქუთაისის ხელისუფლება მიმდინარე წელს პრიორიტეტულ ინფრასტრუქტურულ პროექტებად ასახელებს ქალაქის ცენტრალურ უბნებში ისტორიული და კულტურული ობიექტების რეკონსტრუქციას.

Bitcoin wallet devices vulnerable to security hacks

ScienceDaily Comp&Math - სამ, 23/01/2018 - 20:25
Devices used to manage accounts using Bitcoin could be improved to provide better protection against hackers, according to new research.
კატეგორიები: მათემატიკა

Bitcoin wallet devices vulnerable to security hacks

ScienceDaily Energy Techn. Matter - სამ, 23/01/2018 - 20:25
Devices used to manage accounts using Bitcoin could be improved to provide better protection against hackers, according to new research.
კატეგორიები: ახალი ტექნოლოგიები

Using epigenetic signatures and machine learning to improve diagnosis

ScienceDaily Med - სამ, 23/01/2018 - 20:25
Researchers have identified unique epigenetic signatures for nine neurodevelopmental disorders lending to a better method of diagnosis for disorders with much clinical overlap. The epigenetic signatures were developed through methylation array analysis.
კატეგორიები: მედიცინა

Forensic researchers find more accurate way to estimate age of deceased

ScienceDaily Med - სამ, 23/01/2018 - 20:25
Forensic researchers have found a more accurate way to assess an individual's age at death, based on the bone mineral density of the femur. The technique could be used to help identify human remains.
კატეგორიები: მედიცინა

Le HomePod d’Apple en précommande dès le 26 janvier

Yahoo! Actualités: Les titres Sciences - სამ, 23/01/2018 - 20:21
Alors que des rumeurs évoquaient son arrivée imminente, Apple annonce ce mardi que le HomePod sera en précommande dès le vendredi 26 janvier. L'appareil sera livré au printemps prochain.

Samsung UE49MU7075 : la TV 4K UHD de 49″ à 999€

Yahoo! Actualités: Les titres Sciences - სამ, 23/01/2018 - 20:21
L'écran de 123 cm du fabricant coréen offre une image superbe, une connectique très diversifiée et un prix en légère baisse.

Innovation: les États-Unis dépassés par la France, selon Bloomberg

Yahoo! Actualités: Les titres Sciences - სამ, 23/01/2018 - 20:21
Pour la sixième édition du Bloomberg Innovation Index, la société d'information économique et financière a une nouvelle fois récompensé la Corée du Sud. En revanche, les États-Unis ont perdu deux places et sortent du top 10, tandis que la France se hisse à la 9e position.

Out There Chronicles, Smashing The Battle, MechaNika : les promos du jour pour iPhone, iPad et Android

Yahoo! Actualités: Les titres Sciences - სამ, 23/01/2018 - 20:19
Promotions, passages en gratuit, baisses de prix permanentes : retrouvez la sélection du jour des meilleures offres disponibles sur les stores.

L’acteur Yves Afonso est mort

lemonde.fr - Culture - სამ, 23/01/2018 - 20:18
Second rôle à la « gueule » cabossée souvent remarqué, le comédien a joué pour certains des plus grands réalisateurs français. Il est décédé dimanche 21 janvier à l’âge de 73 ans.

Shrinking Mountain Glaciers Are Affecting People Downstream

Scientific American - სამ, 23/01/2018 - 20:15
Many glaciers seem to have already reached a tipping point, after which freshwater runoff will begin to decline -- Read more on ScientificAmerican.com

Map reveals paths to and from brain’s ‘sadness center’

Futurity.org - სამ, 23/01/2018 - 20:14

A new, finely detailed map depicts the neural pathways leading to and from the “sadness center” of the brains of nonhuman primates.

In the early 1900s, German neurologist Korbinian Brodmann began to study the architecture of the human brain. He divvied up the cerebral cortex—the outer, convoluted brain region that plays a key role in higher functions like memory, attention, and consciousness—into 52 distinct regions.

One of these, a thin sliver of tissue buried deep inside, became known as Brodmann area 25. More colloquially, it’s known as the brain’s “sadness center.”

“When somebody is transiently sad for a reason, let’s say something happened to a family member or a friend, it’s normal to be sad, and this area lights up,” says neuroscientist Helen Barbas, professor of health sciences at Boston University Sargent College and faculty member of the Graduate Program in Neuroscience. “But in people who are depressed, this area stays active. It’s on all the time.”

map of area 25, "sadness center"A map of connections to area 25, with warmer colors indicating stronger connections. Frontopolar area 10, also shown, helps regulate emotions. (Credit: Mary Kate Joyce, Helen Barbas/Boston University)

This work, published in the Journal of Neuroscience, shows strong connections between area 25 and other regions involved in emotional regulation, memory, internal states, and stress response. Barbas and student Mary Kate Joyce also found a moderate connection between area 25 and frontopolar area 10, a part of the brain that helps regulate emotions and is smaller in humans with major depression.

While these findings represent preliminary work in nonhuman primates, they suggest that strengthening the link between these two areas may offer a possible target for treating chronic depression.

“This is an area that people may look at for some kind of therapeutic intervention, and it doesn’t have to just be drugs. It could be activating the frontopolar area 10 noninvasively, maybe using transcranial magnetic stimulation,” says Barbas. She notes that neurologists have used deep brain stimulation in area 25 to treat drug-resistant depression, and suggests that frontopolar area 10’s location closer to the brain’s surface may make it an easier target for such treatment.

To create their map, Barbas and Joyce injected four tracers of different colors and characteristics in primate area 25. The brain cells at the site of injection absorbed the tracers into their cell bodies, then sent them down their long axons to their branching endpoints in other areas. The brain cells absorbed other tracers backward, through axons at the injection site, into the parent cell bodies.

Neurotic? Two other traits may shield your mental health

The experiment allowed researchers to see which areas receive signals from area 25, which areas send signals to area 25, and which circuits looped both ways. The scientists then fed that information into computational analyses to measure the strength and patterns of the connections.

“The pattern of connection is very important,” says Barbas. Area 25 “acts sort of like a feedback system” to most cortical areas, she says. However, it feeds signals forward to certain memory-related areas, like some near the hippocampus. “That means area 25 is probably triggering personal memories through those areas,” she says.

The most surprising finding was the moderate connection between area 25 and frontopolar area 10, a region best known for juggling complex working memory tasks, but one that also seems to regulate emotions in humans. “We think that it may help modulate area 25, exercise some kind of control,” says Barbas. “So this is why it’s relevant.”

The National Institutes of Health funds this work.

Source: Boston University

The post Map reveals paths to and from brain’s ‘sadness center’ appeared first on Futurity.

L’année 2017 en France, marquée par la chaleur et le manque de précipitations

LeMonde - bio, environ, sciences - სამ, 23/01/2018 - 20:11
La température moyenne annuelle de 13,4 °C a dépassé la normale de 0,8 °C, « plaçant 2017 au 5e rang des années les plus chaudes », affirme Météo France.

Netflix tunes into subscriber surge

BBC Technology - სამ, 23/01/2018 - 20:10
The streaming service adds more than 8 million members in the last three months of 2017.
კატეგორიები: ახალი ტექნოლოგიები
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