Ciencia (Page 55)

Research: 500-million-year-old fossilized brains of stanleycaris prompt a rethink of the evolution of insects and spiders

On: 14 de julio de 2022

ROM (Royal Ontario Museum) revealed new research based on a cache of fossils that contains the brain and nervous system of a half-billion-year-old marine predator from the Burgess Shale called Stanleycaris. Stanleycaris belonged to an ancient, extinct offshoot of the arthropod evolutionary tree called Radiodonta, distantly related to modern insectsContinuar Leyendo

Astronomy: Hopping space dust makes asteroids look rougher

On: 14 de julio de 2022

In: Astronomía

Like corn kernels popping in a frying pan, tiny grains of dust may hop around on the surface of asteroids, according to a new study from physicists at the University of Colorado Boulder. Boulder, July 14, 2022.- That popcorn-like effect may even help to tidy up smaller asteroids, causing themContinuar Leyendo

Vuelo Inaugural: Vega-C completa con éxito su vuelo inaugural

On: 13 de julio de 2022

In: Astronomía

París, 13 de Julio de 2022.- El nuevo cohete Vega-C de la ESA ha completado su vuelo inaugural, colocando la carga útil principal LARES-2 —una misión científica de la Agencia Espacial Italiana (ASI)— en su órbita prevista. También se transportaron seis CubeSats de investigación de Francia, Italia y Eslovenia comoContinuar Leyendo

Science & Exploration: Webb reveals steamy atmosphere of distant planet in exquisite detail

On: 12 de julio de 2022

In: Astronomía

París, July 12, 2022.- Webb’s enormous mirror and precise instruments joined forces to capture the most detailed measurements of starlight filtering through the atmosphere of a planet outside our Solar System to date. The spectrum of light – which contains information about the makeup of a planetary atmosphere 1,150 light-yearsContinuar Leyendo

Astronomy: Webb delivers deepest infrared image of Universe yet in special briefing

On: 12 de julio de 2022

In: Astronomía

Washington, July 12, 2022.- The international NASA/ESA/CSA James Webb Space Telescope has delivered the deepest, sharpest infrared image of the distant Universe so far. U.S. President Joe Biden unveiled the image of galaxy cluster SMACS 0723, known as Webb’s First Deep Field, during a White House event on Monday 11Continuar Leyendo

Medicine: Could a computer diagnose Alzheimer’s disease and dementia?

On: 12 de julio de 2022

In: Medicina

It takes a lot of time — and money — to diagnose Alzheimer’s disease. After running lengthy in-person neuropsychological exams, clinicians have to transcribe, review, and analyze every response in detail. But researchers at Boston University have developed a new tool that could automate the process and eventually allow itContinuar Leyendo

Research: Ozone depletion over North Pole produces weather anomalies

On: 11 de julio de 2022

In: Ciencia

Many people are familiar with the hole in the ozone layer over Antarctica, but what is less well known is that occasionally, the protective ozone in the stratosphere over the Arctic is destroyed as well, thinning the ozone layer there. This last happened in the spring months of 2020, andContinuar Leyendo

Medicine: Functioning of antibodies in autoimmune encephalitis deciphered

On: 10 de julio de 2022

In: Medicina

Using a state-of-the-art method, researchers at DZNE and the University of Texas have succeeded for the first time at unraveling the effects of autoimmune antibodies, that are directed against the brain, in detail at the atomic level. To this end, they studied two antibodies that dock to so-called GABAA receptorsContinuar Leyendo

Cell Biology: Researchers identify cells causing neuronal death in a mitochondrial disease animal model

On: 10 de julio de 2022

In: Ciencia

Microglia, a type of central nervous system cell, is primarily responsible for neuronal death in Leigh Syndrome and the neurological symptoms related to this mitochondrial disease. This is the conclusion of a research group from the Institut de Neurociències of the Universitat Autònoma de Barcelona (INc-UAB) in a new studyContinuar Leyendo

Health: Researchers decode retinal circuits for circadian rhythm, pupillary light response

On: 8 de julio de 2022

In: Medicina

The eye’s light-sensing retina taps different circuits depending on whether it is generating image-forming vision or carrying out a non-vision function such as regulating pupil size or sleep/wake cycles, according to a new mouse study from the National Eye Institute (NEI) and the National Institute of Mental Health (NIMH). TheContinuar Leyendo