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ძიება ქართულ ლექსიკონებში და ენციკლოპედიებში
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

Klimaziele zu schwach: Familie Recktenwald verklagt die EU

SPIEGEL ONLINE - Wissenschaft - 7 საათი 5 წთ-ს წინ
Die Recktenwalds leben auf der Insel Langeoog - und sehen sich direkt vom Klimawandel bedroht. Gemeinsam mit neun Familien aus vier EU-Staaten, Kenia und Fidschi verklagen sie die EU. Die Klimaziele seien nicht ausreichend.

Publicis dévoile "Marcel" son "arme secrète" pour mieux connecter ses collaborateurs

Yahoo! Actualités: Les titres Sciences - 7 საათი 8 წთ-ს წინ
Le géant de la publicité français Publicis a dévoilé jeudi son "arme secrète" pour faire face à la mutation numérique du secteur de la communication: "Marcel", un assistant à base d'intelligence artificielle destiné à mieux connecter ses 80.000 collaborateurs dans 130 pays.

Atlandes offre des lunettes connectées contre la somnolence au volant

Yahoo! Actualités: Les titres Sciences - 7 საათი 10 წთ-ს წინ
Atlandes, société concessionnaire de l'autoroute des Landes, a signé un partenariat avec la startup Ellcie Healthy, créatrice de lunettes connectées pour lutter contre la somnolence au volant, première ...

Five of the best London-based design roles available right now

dezeen - 7 საათი 11 წთ-ს წინ

Wood Bagot's self-designed New York studio

To coincide with Clerkenwell Design Week, we've selected the best London-based design roles available via Dezeen Jobs, including roles with Woods BagotZaha Hadid Architects and Hermès. Read more

What Is Spacetime?

PhysicsSCIAM - 7 საათი 12 წთ-ს წინ
Physicists believe that at the tiniest scales, space emerges from quanta. What might these building blocks look like? -- Read more on ScientificAmerican.com
კატეგორიები: ფიზიკა

What Is Spacetime?

Scientific American - 7 საათი 12 წთ-ს წინ
Physicists believe that at the tiniest scales, space emerges from quanta. What might these building blocks look like? -- Read more on ScientificAmerican.com

კურსი - ეროვნული უსაფრთხოება და მედია კომუნიკაციები

ჯობს.გე - ტრენინგები - 7 საათი 14 წთ-ს წინ
მომწოდებელი: საქართველოს სტრატეგიული ანალიზის ცენტრი / ბოლო ვადა: 10 ივნ

SOLO და Eastern Promotions, Black Sea Arena-ზე წარმოგიდგენთ ლეგენდარული ელტონ ჯონისა და მისი ბენდის კონცერტს

Presa.ge - ინტერნეტ-გამოცემა - 7 საათი 15 წთ-ს წინ
ლეგენდარული ბრიტანელი კომპოზიტორი, პოპ და როკ-მუსიკოსი, მომღერალი სერ ელტონ ჯონი საქართველოს 2018 წლის 30 ივნისს ეწვევა და ორი დღის განმავლობაში, 30 ივნისსა და და 1-ელ ივლისს კონცერტებს გამართავს.

FBI seeks to thwart cyber-attack on Ukraine

BBC Technology - 7 საათი 19 წთ-ს წინ
Malware that could 'kill' home routers has been thwarted by the FBI's action against the malicious site.
კატეგორიები: ახალი ტექნოლოგიები

მოძველებული ავტოპარკი თუ საწვავის ხარისხი - რა იწვევს ჰაერის დაბინძურებას

Presa.ge - ინტერნეტ-გამოცემა - 7 საათი 19 წთ-ს წინ
ვახტანგ იობაშვილი: „თუ არ გაუმჯობესდა სატრანსპორტო პარკი ქვეყანაში, არანაირი საწვავი არ უშველის.“

Depression speeds up brain aging, find psychologists

ScienceDaily Med - 7 საათი 25 წთ-ს წინ
Psychologists have found a link between depression and an acceleration of the rate at which the brain ages.
კატეგორიები: მედიცინა

Eczema drug eases most severe asthma symptoms

Futurity.org - 7 საათი 28 წთ-ს წინ

Two new studies of patients with difficult-to-control asthma show that a known eczema drug alleviates asthma symptoms and improves patients’ ability to breathe better than standard therapies.

The Food and Drug Administration approved dupilumab, injectable anti-inflammatory drug, in 2017 as a treatment for eczema, a chronic skin disease.

The more than 2,000 patients enrolled in the studies suffered from moderate to severe asthma. All used standard asthma inhalers, and some also took oral steroids to control their symptoms.

“This drug not only reduced severe symptoms of asthma, it improved the ability to breathe.”

In one study, the rate of asthma exacerbations was almost cut in half for those taking dupilumab compared with those taking a placebo. On average, patients taking a placebo had close to one exacerbation per day during the year of the study. Exacerbations are periods of sudden worsening of asthma symptoms such as wheezing, coughing, shortness of breath, and tightness in the chest.

Although the drug significantly reduced asthma symptoms for all patients, dupilumab worked particularly well in patients with high numbers of a specific type of white blood cell, called eosinophils, circulating in the bloodstream. For those patients, asthma exacerbations were cut by two-thirds.

“This drug not only reduced severe symptoms of asthma, it improved the ability to breathe,” says Mario Castro, professor of pulmonology and critical care medicine at Washington University in St. Louis.

“That’s important because these patients have a chronic disabling disease that worsens over time with loss of lung function. So far, we do not have a drug for asthma that changes the course of the disease. Current drugs for severe asthma help reduce trips to the emergency room, for example, but they don’t improve lung function.”

Better lung function

The first study, in the New England Journal of Medicine, included about 1,900 patients at least 12 years old with moderate to severe asthma requiring they use at least three different inhalers to control their symptoms. One inhaler contained a corticosteroid that reduces inflammation, another contained a long-acting bronchodilator that relaxes airway muscles, and the third was a “rescue” inhaler filled with albuterol, a short-acting bronchodilator that quickly opens up the airway in the event of a more severe asthma attack.

Patients taking these inhaled medications then randomly received either dupilumab or a placebo for one year. Patients receiving dupilumab—an injectable antibody—also were randomly assigned to a higher or lower dose of the drug. Neither patients nor their doctors knew whether they were receiving the drug or the placebo.

“It can become a very disabling disease.”

In addition to reduced symptoms, the patients receiving dupilumab showed improved lung function in a test of “forced expiratory volume, ” which measures the amount of air someone can force from the lungs during a deep exhale.

Patients receiving dupilumab, regardless of dose, improved their lung function by approximately 130-200 milliliters greater than those receiving the placebo. In general, there were no significant differences between the patients receiving high and low doses of dupilumab.

Rates of emergency room visits and hospitalizations also improved for patients receiving the drug. In the placebo group (with 638 patients), on average, 6.5 percent of the patients required an emergency room visit or hospitalization due to asthma during the study. In the dupilumab group (with 1,264 patients), on average, 3.5 percent of patients needed emergency care or hospitalization due to asthma.

Less prednisone

The findings of the second study, also in the New England Journal of Medicine, show that another benefit of the drug could be the ability to wean severe asthma patients off of chronic oral steroids, which can cause debilitating long-term side effects, including stunted growth, diabetes, cataracts, and osteoporosis.

The second study included about 200 patients using the same inhaled asthma medications as patients in the larger trial, plus additional oral steroids—usually prednisone—to control their more severe symptoms.

Half of the patients receiving dupilumab in this study were able to completely eliminate prednisone use. And 80 percent of dupilumab-treated patients were able to at least cut their doses in half. Patients on placebo also reduced prednisone use but to a lesser degree, likely because the protocols of participating in a clinical trial help asthma control generally.

Doctors would like to help patients rely less on steroids for asthma control because those with severe asthma can be forced to take these drugs for decades to enable them to breathe.

More effective asthma drug could reshape treatment

“I have patients who have had to stop working and go on disability because their asthma symptoms are so severe they can no longer function in the workplace,” Castro says. “I’m excited about the potential of dupilumab because I have so many patients who have maxed out on available therapies and they still can’t breathe. It can become a very disabling disease.”

Patients receiving dupilumab did experience known side effects of the drug, including pain and swelling at the injection site and a short-term bump in the number of eosinophil cells in the blood. Five patients who received dupilumab and three patients who received a placebo died during the study period.

This vitamin may cut asthma airway inflammation

According to the investigators and descriptions of these patients’ medical histories, all suffered from multiple severe medical conditions, and none of the deaths was deemed related to the study protocol.

Source: Washington University in St. Louis

The post Eczema drug eases most severe asthma symptoms appeared first on Futurity.

5 big questions about the science of ‘Star Wars’

Futurity.org - 7 საათი 30 წთ-ს წინ

As Star Wars: The Force Awakens cleaned up at the box office, researchers from Georgia Tech took a closer look at the science of the films. They answered five big questions about the worlds depicted in the movies and what’s possible in reality. We’re revisiting their responses to celebrate the release of the 2018 installment in the series, Solo: A Star Wars Story.

1. Is light speed even possible?

Han Solo isn’t a bashful hero. So it’s no surprise that it took him only a few moments after we first met him to brag that his Millennium Falcon was the “fastest ship in the galaxy.” But how fast is fast? Solo said his ship can go .5 past light speed.

Deirdre Shoemaker, associate professor in the Georgia Tech School of Physics, explains in this video how fast light speed really is, why it’s not fast enough, and what needs to happen for something to actually travel 186,000 miles per second:

2. Could these new worlds exist in our universe?

The Star Wars universe depicts a diverse set of worlds containing a variety of inhabitants. John Wise, assistant professor in the School of Physics, studies early galaxies and distant objects in the universe. He wonders if there are planets somewhere out there that resemble the ones imagined by George Lucas:

“Until 1991, the only planets known to humans were in our Solar System. In that same year, astronomers discovered the first extrasolar planet, now dubbed as exoplanets, by measuring the Doppler shift of stellar spectral lines, effectively witnessing the planet play gravitational tug-of-war with its parent star as it orbits. Over the next decade or so, astronomers refined their planet hunting skills and found more than 30 exoplanets.

“Imagine how many planets are littered among the 100 billion galaxies in the observable universe. Perhaps planets from a long time ago in a galaxy far, far away?”

“This all changed with the launch of NASA’s Kepler Mission, which continually monitored a patch of sky for brightness variations in 150,000 stars. Any dip in brightness can be caused by a planet passing in front of its star, blocking a small fraction of its light. In its four-year run, Kepler detected and confirmed nearly 2,000 planetary systems, ranging from “Hot Jupiters” to frozen, rocky worlds. Intriguingly, a select few lie within the Goldilocks zone where liquid water could exist because the planet isn’t too hot or too cold.

“This planetary diversity is also seen in Star Wars—Endor, the home of the Ewoks, that orbits a gaseous giant planet; Hoth, where Luke Skywalker almost froze to death; Alderaan, a blue-green orb not unlike our Earth until it was destroyed by the Death Star; and Tatooine, Luke and Anakin Skywalker’s home planet. One of the most vivid scenes of Episode IV happens when Luke gazes toward the horizon at a binary sunset. When the original was released in 1977, such a scene was restricted to the sci-fi realm, but this is no longer the case. Kepler has now discovered 10 planets that orbit binary star systems, whose possible inhabitants see a similar sight every day.

“The Kepler Mission was just the first step in humankind’s discovery of planetary systems in the Milky Way. It only observed 1/400th of the sky. It could only detect planets out to 3,000 light years, which is tiny compared to the Milky Way’s size of 100,000 light years. Using Kepler’s detections, astronomers have estimated that there could be as many as 40 billion planets in our galaxy. But that is only one galaxy! Imagine how many planets are littered among the 100 billion galaxies in the observable universe. Perhaps planets from a long time ago in a galaxy far, far away?”

r2-d2 and c3po watch sunset(Credit: Michael Li/Flickr) 3. Are C-3PO and R2-D2 coming soon?

Even though C-3PO and R2-D2 lived (in a galaxy) a long time ago, today’s roboticists still haven’t found a way to create their current-day cousins. The College of Computing’s Sonia Chernova is one of many on campus trying to bring robots out of the lab and into the world so that people can have their own droids. She says:

“Robots tend to be on one extreme or the other these days. One kind is found on Mars, battlefields, and in operating rooms. These robots are extensions of humans—they’re rarely autonomous because a human is always in the loop.

“As for R2-D2 and his friends, we’re not that far from personal robots.”

“Others are autonomous. We see this mostly on manufacturing floors, where machines are programmed to do the same repetitive task with extreme precision. Not only are they limited by what they can do, but they’re also often separated from people for safety reasons.

“I’m focused on something in the middle. Full autonomy for personal robots would be great, but it’s not yet practical given today’s technology. Humans are too unpredictable and environments are ever changing. Rather than setting 100 percent autonomy as the goal for getting robots into our lives, we should deploy them when they’re simply “good enough.” Once they’re with us, they can learn the rest.

“Here’s an example: in hospitals, a delivery robot could pass out towels and medication. If it were to get stuck leaving a room, the machine could call a command center where a human technician would figure out the problem and free the robot. Here’s the key: every time a person made a fix, the robot would keep that new information and use it to perform differently the next time it leaves the room. With humans in the mix, this robot could learn from its mistakes and continually push toward 100 percent autonomy.

“As for R2-D2 and his friends, we’re not that far from personal robots. I don’t think we’ll have to clean our houses in 20 years because we’ll have robot helpers. I’m not sure what they’ll cost or if people will psychologically be ready to give up that part of their lives, but we’ll have the software and hardware in place to make it happen.

4. What would it be like to master the Force?

Imagine lifting a spaceship with the tip of your finger like Yoda in The Empire Strikes Back. Nepomuk Otte of the School of Physics says there are a few things you might want to consider: 

“Didn’t we learn from physics classes about Newton’s third law? For every action, there is an equal and opposite reaction. If true, it would mean that when Yoda exerts a force on the X-wing, Luke Skywalker’s spaceship should also exert the same amount of force on Yoda. So why doesn’t the little fella get squished like a mosquito?

“Violating action and reaction would shatter one of the most sacred laws in physics—momentum conservation. But Yoda moves the spacecraft with ease and shuffles away unscathed. The Jedi Master must be surrounded by some sort of shield that absorbs the reaction part of the force. When you attempt to use the Force, make sure you have one of those shields, too, or you might suffer the consequences.”

5. Can the Force be a new interaction that we haven’t discovered yet?

Flavio Fenton of the School of Physics responds—and offers a few questions of his own:

“When the Death Star’s superlaser destroyed Princess Leia’s home planet of Alderaan, Obi-Wan Kenobi delivered one of the saga’s most famous quotes: ‘I felt a great disturbance in the Force, as if millions of voices suddenly cried out in terror and were suddenly silenced. I fear something terrible has happened.’

“…if we were to study the Force from a subatomic level, we should consider that, like any other interaction we know in nature, there exist force carriers.”

“The death of the entire planet sent shock waves through the Force, weakening those who were able to feel them. That included Obi-Wan, who briefly became faint. This action at a distance is explained in physics by what is called a field. For example, we are well aware of gravitational and electromagnetic fields. Objects that are affected by a field carry “something” that allows them to interact. For gravity, it is mass. For electricity, it is charge.

“Because there is a Light and a Dark Side of the Force, a field would require that we assume two types of charges, similar to positive and negative charges in the electromagnetic force. Here’s an example: Darth Vader can strangle people by using the Force without physical contact. That means his victims would have to carry both types of charges in equal amounts, and the effects of the two types cancel each other. How does it happen?

“One explanation is that the dark force Vader unleashes attracts the light charge of his victim, leaving the person unbalanced with an excess of dark charge. In this case, all the dark charges then try to come together along the neck, squeezing and nearly choking the person to death. This means that unlike electric charge, particles with equal force charges attract and repel when they have different charges. This could explain why a neutral force charge is common to all objects. It could also explain why the Dark Side has an addictive aspect: when a Jedi turns to the Dark Side, it’s a slippery slope filled with continuous evil.

“Going just a bit deeper for my fellow physics fanatics—if we were to study the Force from a subatomic level, we should consider that, like any other interaction we know in nature, there exist force carriers. These are particles that give rise to forces between other particles. For example, the electromagnetic force between two electrons can be explained by the exchange of virtual photons and gravitation by the exchange of virtual gravitons. Therefore the two Force charges should have a carrier. Should we call them Jedi-nos? Should the Large Hadron Collider search for these new particles now that it has found the Higgs particle?”

Source: Georgia Tech (Originally published December 30, 2015)

The post 5 big questions about the science of ‘Star Wars’ appeared first on Futurity.

მეუფე იობი: ე.წ. ჟურნალისტმა გიორგი გაბუნიამ შეურაცხყო ღვთისმშობელი, ის არის შეჩვენებული

Presa.ge - ინტერნეტ-გამოცემა - 7 საათი 30 წთ-ს წინ
მროველ-ურბნელი მიტროპოლიტი იობი აცხადებს, რომ ჟურნალისტი გიორგი გაბუნია ეშმაკის მსახურია და ის უნდა მოშორდეს როგორც ჟურნალისტიკას, ისე მთლიანად საქართველოს“.

გედევან ფოფხაძე: კარასინი-აბაშიძის ფორმატი ის არ არის, რითაც რუსეთს ვაპატიოსნებთ

Presa.ge - ინტერნეტ-გამოცემა - 7 საათი 35 წთ-ს წინ
PRESA.GE ტერიტორიული მთლიანობის აღდგენის საკითხთა დროებითი კომისიის თავმჯდომარე გედევან ფოფხაძეს ესაუბრა:

პრაღაში გაიმართა ზურაბ აბაშიძის და გრიგორი კარასინის შეხვედრა

რადიო თავისუფლება - 7 საათი 37 წთ-ს წინ
24 მაისს პრაღაში გაიმართა რუსეთთან ურთიერთობების საკითხებში საქართველოს პრემიერ-მინისტრის სპეციალური წარმომადგენლის, ზურაბ აბაშიძისა და რუსეთის საგარეო საქმეთა მინისტრის მოადგილის, გრიგორი კარასინის შეხვედრა. მისი დასრულების შემდეგ, ზურაბ აბაშიძემ ქართველ ჟურნალისტებს აცნობა, რომ ოკუპირებულ ტერიტორიებზე შექმნილ რთულ ვითარებაზე საუბრისას ყურადღება გაამახვილა არჩილ ტატუნაშვილის და გიგა ოთხოზორიას მკვლელობებზე. „ხაზი გავუსვი, რომ ქართული მხარე ყველაფერს გააკეთებს და ყველა მექანიზმს გამოიყენებს...

What to expect from the new GMO labels we're getting in 2020

Popsci.com - science - 7 საათი 42 წთ-ს წინ
woman shopping groceries Science

Grocery stores may look a little different.

The U.S. Department of Agriculture recently announced their plan for rolling out mandatory labels for all food products containing genetically modified organisms…

Are Avocados Toast?

Wired Science - 7 საათი 42 წთ-ს წინ
What will we eat in 2050? California farmers are placing bets.
კატეგორიები:

Daydreaming May Help You Become More Socially Adept

Scientific American - 7 საათი 42 წთ-ს წინ
New research explains why relationships take up so much of our mental energy -- Read more on ScientificAmerican.com

Battlefield 5: Zweiter Weltkrieg mit Battle-Royal-Touch

Wissen - FAZ.NET Frankfurter Algemeine - 7 საათი 50 წთ-ს წინ
Das neue Battlefield macht einiges anders als seine Vorgänger. Der Multiplayer-Modus profitiert von Einflüssen der Battle-Royal-Szene, und Teamplay wird im Kampf gegen die deutsche Unterdrückung groß geschrieben.
ინფოარხების ცნობების შეკრება