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

მსოფლიო სამეცნიერო სიახლეები

Deep-diving scientists say shallow reefs can't rely on twilight zone systems for recovery

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:21
A team of highly trained scientific divers explored Pacific and western Atlantic reefs to test a widely held hypothesis that climate-stressed life from shallow reefs can take refuge at mesophotic depths (100-500 feet beneath the ocean's surface). The results are clear: deep and shallow reefs are different systems with their own species, and deep reefs are just as threatened by climate impacts, storms, and pollution.
კატეგორიები: ბიოლოგია

Yeast species used in food industry can cause disease in humans, study finds

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:21
A major cause of drug-resistant clinical yeast infections is the same species previously regarded as non-pathogenic and commonly used in the biotechnology and food industries.
კატეგორიები: ბიოლოგია

Learning from 'little monsters'

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:21
By studying deep and shallow water zones of streams and their resident invertebrates, researcher reveals mysteries of fresh water life.
კატეგორიები: ბიოლოგია

Chemists characterize the fatal fungus among us

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:21
Life-threatening fungal infections affect more than two million people worldwide. Effective antifungal medications are limited. A major challenge is that the fungal cell wall is poorly understood, which has impeded drug development. However, chemist have identified for the first time the cell wall structure of one of the most prevalent and deadly fungi, which could usher in a new era of antifungal drug development to help save lives.
კატეგორიები: ბიოლოგია

In a warming climate, Arctic geese are rushing north

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:21
As Arctic temperatures continue to rise, migratory barnacle geese have responded by speeding up their 3,000-kilometer migration in order to reach their destination more quickly with fewer stops along the way, according to new evidence. Unfortunately, the birds' earlier arrival isn't making as much of a difference as one might expect.
კატეგორიები: ბიოლოგია

Complete fly brain imaged at nanoscale resolution

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:21
Scientists have taken detailed pictures of the entire brain of an adult female fruit fly using transmission electron microscopy.
კატეგორიები: ბიოლოგია

Enzyme identified as possible novel drug target for sickle cell disease, Thalassemia

ScienceDaily Med - ხუთ, 19/07/2018 - 22:20
Medical researchers have identified a key signaling protein that regulates hemoglobin production in red blood cells, offering a possible target for a future innovative drug to treat sickle cell disease. Experiments in cultured human cells reveal that blocking the protein reduces the characteristic sickling that distorts the shape of red blood cells and gives the disease its name.
კატეგორიები: მედიცინა

From cradle to grave: Factors that shaped evolution

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:20
This study brings us closer to knowing the complex interactions between topography and climate change, and how these factors influence the evolutionary histories and biodiversity of species in natural ecosystems.
კატეგორიები: ბიოლოგია

Paralyzed mice with spinal cord injury made to walk again

ScienceDaily Med - ხუთ, 19/07/2018 - 22:20
Most people with spinal cord injury are paralyzed from the injury site down, even when the cord isn't completely severed. Why don't the spared portions of the spinal cord keep working? Researchers now provide insight into why these nerve pathways remain quiet. They also show that a small-molecule compound, given systemically, can revive these circuits in paralyzed mice, restoring their ability to walk.
კატეგორიები: მედიცინა

Paralyzed mice with spinal cord injury made to walk again

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:20
Most people with spinal cord injury are paralyzed from the injury site down, even when the cord isn't completely severed. Why don't the spared portions of the spinal cord keep working? Researchers now provide insight into why these nerve pathways remain quiet. They also show that a small-molecule compound, given systemically, can revive these circuits in paralyzed mice, restoring their ability to walk.
კატეგორიები: ბიოლოგია

Fruit fly species can learn each other's dialects

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:20
Fruit flies from different species can warn each other when parasitic wasps are near. But according to a new study, they are more likely to get the message across if the fly species have previously cohabited and learned each other's dialects.
კატეგორიები: ბიოლოგია

Why does making new egg cells require so much cell death?

ScienceDaily Med - ხუთ, 19/07/2018 - 22:20
A highly detailed study of how the roundworm C. elegans forms oocytes suggests that the egg-making process leads to the formation and subsequent destruction of cells with an extra nucleus, but that some cellular materials are recycled into new eggs.
კატეგორიები: მედიცინა

Why does making new egg cells require so much cell death?

ScienceDaily Plants&Animals - ხუთ, 19/07/2018 - 22:20
A highly detailed study of how the roundworm C. elegans forms oocytes suggests that the egg-making process leads to the formation and subsequent destruction of cells with an extra nucleus, but that some cellular materials are recycled into new eggs.
კატეგორიები: ბიოლოგია

Rebecca Masterson appointed AeroAstro principal research scientist

MIT Top News - ხუთ, 19/07/2018 - 22:20
MIT Department of Aeronautics and Astronautics (AeroAstro) researcher Rebecca “Becky” Masterson has much to be pleased about. A device she was instrumental in developing is aboard a spacecraft on a historic mission to a distant asteroid. And she's just been appointed as a principal research scientist for the department. “Becky is an outstanding researcher with an impressive record of accomplishment in space systems engineering and design,” AeroAstro head Jaime Peraire says in his announcement of Masterson’s promotion from research engineer to principal research scientist. “She has played key technical and management roles in several projects involving sophisticated flight instrumentation and hardware, such as the REXIS project, where she served as program manager and co-PI, and more recently, the NASA  TESS  program, where she is a technical leader. Becky brings a unique expertise to the MIT community.” “She is also a talented mentor and educator who, in true MIT fashion, brings together teams of graduate and undergraduate students working on real flight hardware, thus providing them with a unique experience,” Peraire adds. MIT defines principal research scientists as those who “possess all the qualifications of research scientist, research engineer, or research associate and ... have demonstrated the ability to generate and develop concepts independently, and to conduct independent research.” Of the Institute’s 115 principal researchers, 22 are women. Including Masterson, there are now four principal researchers in the AeroAstro department — and she is the first woman to earn this honor in the 104-year history of MIT aerospace engineering. Being the first female in a role in 2018 “feels a bit overwhelming,” Masterson says. “It tells me that there is still work to be done supporting and mentoring young women engineers and researchers and making a place where they feel welcome,” she says. “I hope I can provide some of that encouragement and inclusivity on the research track.” Professor of aeronautics and astronautics and MIT Institute Professor Sheila Windnall, who became MIT's first female engineering professor in 1964, calls Masterson “a tremendous MIT asset, as both a researcher and a teacher.” “I am personally thrilled to congratulate her on becoming our first female PRS.” Windall says. “As it says in our department’s statement on diversity, our scholarship, teaching, and learning’s full potential only can happen in an environment where every individual is valued without prejudice, and where inclusion and collaboration is a core principle.” David Miller, the Jerome Hunsaker Professor of Aeronautics and Astronautics and former director of the Space Systems Laboratory (SSL), where Masterson has worked since 2012, says Masterson provides “a perfect, yet rare combination of research prowess, real world experience, program management expertise, focus on education, and teamwork skills.” “Her desire to keep one foot in education and research and her other foot in spaceflight programs provides her with a unique and exceptionally valuable perspective on the aerospace field,” Miller notes. “Hers is a perspective that isn’t traditionally provided in our classrooms and creates opportunities for our graduate researchers that are quite rare in the academic setting.” On Sept. 8, 2016, NASA launched OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer), a spacecraft with an unprecedented mission: to harvest a piece of the asteroid Bennu and return the extraterrestrial sample to Earth. Aboard the spacecraft is REXIS, an MIT and Harvard University student-built imaging spectrometer that will analyze the effect of the sun’s X-rays on the asteroid’s soil, identifying chemical elements on Bennu’s surface. REXIS may also assist in pinpointing a good spot for collecting the sample. Masterson was a REXIS co-principal investigator. “REXIS has been on its way to Bennu for two years,” Masterson says. “It turns on about every six months, and every time it does, I’m excited. This summer, we’ll be opening its cover, which is a big deal. We’ll take a look at the Crab Nebula and do some calculations before we do actual asteroid science in the summer of 2019.” Prior to joining SSL, Masterson was a senior engineer at the Charles Stark Draper Laboratory in Cambridge, Massachusetts, where, among her tasks were flight control design and certification for Space Shuttle / International Space Station mated operations, and mission control support during space shuttle missions. She earned her BS, MS, and PhD degrees, all in mechanical engineering, from MIT in 1997, 1999, and 2005 respectively. As a principal researcher, she’s now in a position to bring in her own grants. “Now I can more easily chart my own path,” she says. She notes that in her role as an engineering researcher, “I’m trying to find a balance between building things and publishing.” Masterson also treasures the time she gets to spend with students. “I really enjoy being in an academic environment,” she says. “Working with students is an interaction I wouldn’t have in industry. I’d hoped that the department would find my experience building and flying hardware beneficial to our students’ educational experience. My promotion says that yes, the department does.”

Foren zu Finanzfragen können hilfreich sein – und lustig

Wissen - FAZ.NET Frankfurter Algemeine - ხუთ, 19/07/2018 - 21:47
Wallstreet-online.de oder doch finanzforum.de? Für Finanzfragen gibt es jede Menge Internetforen. Doch wer selbst Beiträge teilt, muss einstecken können. Dann kann er viel lernen – und viel lachen.

Dampfwolke in Manhattan: Leitung explodiert am Flatiron Building

Wissen - FAZ.NET Frankfurter Algemeine - ხუთ, 19/07/2018 - 21:36
Wieder explodiert eine Dampfleitung im New Yorker Stadtteil Manhattan – fünf Menschen werden leicht verletzt. Die Fifth Avenue in der Nähe des berühmten Flatiron Buildings musste gesperrt werden.
ინფოარხების ცნობების შეკრება