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Τετάρτη 29 Ιουνίου 2016

The Science of Sleep: Melatonin to Neural Pathways

                  





The Science of Sleep: Melatonin to Neural Pathways

Δημοσιεύτηκε στις 29 Ιουν 2016

Russell
Foster, Debra Skene and Stafford Lightman discuss the science of sleep.
Why do we need sleep and what are the physiological processes driving
our circadian rhythm? When is our circadian clock disrupted and how does
this affect our health? Cognitive neuroscientist Vincent Walsh chairs
the debate.
Subscribe for regular science videos: http://bit.ly/RiSubscRibe

The
science behind sleeplessness can help us understand our rhythms so we
can live better and healthier lives. While hormones, such a melatonin,
play a role in driving our circadian clock, the amount of sleep we get
and our sleep cycles also affect our hormonal release patterns, with
far-reaching implications on our health.
Cognitive neuroscientist
Vincent Walsh chairs a discussion with a panel of experts who specialise
in circadian rhythms. They explore how light detection plays a role in
our sleep-wake cycles, how hormone release is regulated and the
implications of changes to our circadian clock and sleeplessness over
time.

This event was supported by British Psychological Society and Society for Endocrinology.


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ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 29/6/2016






How Earth Moves

                   



How Earth Moves

Δημοσιεύτηκε στις 13 Ιουν 2016

It’s here! Science stuff, mind-blowing stuff, Vsauce stuff, oh my!! THE CURIOSITY BOX: https://www.thecuriositybox.com/

Jake’s video about The Curiosity Box: https://www.youtube.com/watch?v=p91-G...

Minute Physics on why December days are the longest: https://www.youtube.com/watch?v=nZMMu...

StandUpMaths on calendars and leap days: https://www.youtube.com/watch?v=qkt_w...

Tom Scott on the Equation of Time: https://www.youtube.com/watch?v=d9Qno...

My video on what would happen if the Earth stopped spinning: https://www.youtube.com/watch?v=K0-Gx...

GREAT visuals showing how Earth moves around the sun: https://www.youtube.com/watch?v=82p-D...

http://www.timeanddate.com/

George Washington’s birthday: https://www.archives.gov/legislative/...

real-time sub solar point location: http://rl.se/sub-solar-point

Lahaina noon images from the Oahu Astrophotography club: https://www.facebook.com/OahuAstropho...

analemma: https://en.wikipedia.org/wiki/Analemma

great solargraph and analemma images: http://analemma.pl/english-version

interactive seasons and ecliptic simulator: http://astro.unl.edu/classaction/anim...

Nasa video of seasonal movement of Earth: https://svs.gsfc.nasa.gov/20063

Tropical year: https://en.wikipedia.org/wiki/Tropica...

Earth rotation specifics: https://svs.gsfc.nasa.gov/cgi-bin/det...

How Earth moves through the universe:

https://astrosociety.org/edu/publicat...
http://www.slate.com/blogs/bad_astron...
http://space.gizmodo.com/racing-while...
https://www.reddit.com/r/askscience/c...

minute physics on cab: https://www.youtube.com/watch?v=_mZQ-...

PBS spacetime on the cosmic microwave background:

https://www.youtube.com/watch?v=3tCMd...

https://www.youtube.com/watch?v=wcBji...

CMB rest frame:

http://physics.stackexchange.com/ques...
https://www.reddit.com/r/AskPhysics/c...

Wikipedia:

https://en.wikipedia.org/wiki/Day
https://en.wikipedia.org/wiki/Solar_time
https://en.wikipedia.org/wiki/Siderea...
https://en.wikipedia.org/wiki/Calendar
https://en.wikipedia.org/wiki/Gregori...
https://en.wikipedia.org/wiki/Calenda...
https://en.wikipedia.org/wiki/Day_len...
https://en.wikipedia.org/wiki/Cosmic_...

wikicommons images:

https://en.wikipedia.org/wiki/Sundial...
https://en.wikipedia.org/wiki/File:Ca...
https://en.wikipedia.org/wiki/Miami_B...

To explore space, I highly recommend these:

http://www.shatters.net/celestia/
http://en.spaceengine.org/

music by http://www.youtube.com/jakechudnow
and http://www.audionetwork.com

Awesome 3D graphics by Eric Langlay: https://www.youtube.com/user/ericdrav...
Lame 2D stuff by me.




ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 29/6/2016

New Fundamental Particle Discovered?? + Challenge Winners! | Space Time ...

                    



New Fundamental Particle Discovered?? + Challenge Winners! | Space Time ...

Δημοσιεύτηκε στις 8 Ιουν 2016

Be sure to check out Matt’s AMA at https://www.reddit.com/r/science
on Monday, June 13th. He’ll be discussing the upcoming documentary he
was a part of Distant Quasars: Shedding Light on Black Holes http://www.amnh.org/explore/science-b...

Get your own Space Time t­shirt at http://bit.ly/1QlzoBi
Tweet at us! @pbsspacetime
Facebook: facebook.com/pbsspacetime
Email us! pbsspacetime at gmail dot com
Comment on Reddit: http://www.reddit.com/r/pbsspacetime

Scientists
at the Large Hadron Collider may have just discovered a new fundamental
particle that could change the way we look at the universe. Is this
Dark Energy? A giant Neutrino? The big brother of the Higgs Boson? Or
could it be the mysterious Graviton? Matt also reveals the answer to the
Dark Energy Challenge question and responds to comments from the Ice
Age episode. We’ve got a lot going on, so check it out!

Examples from four of the major families of theoretical explanations for the 750 GeV excess: http://journals.aps.org/prl/abstract/...

Written and hosted by Matt O’Dowd

Made by Kornhaber Brown (www.kornhaberbrown.com)

Challenge Winners:
Pete Benzi astronomianova@gmail.com
Ingrid Skard ingrid.skard@gmail.com
Ryan Brown Ryan.Brown@unb.ca
Nicolai Veliki nickveliki@gmail.com
Sandra Unruh s6saunru@uni-bonn.de
Alex Gravenor blazingkin@gmail.com
Brian Ross bross14@jhmi.edu

You
can review a more in-depth explanation of the challenge answers at the
link below. The first document is the main question solution described
in this video, and the second is the extra credit. The third provides
the details of an analytical solution to the integral. Special thanks to
Pete Benzi, who is not only one of our winners but also but also
generously provided the extra credit solution (incl. the integral) we
link to here. His was much more clearly presented than ours!

Main and extra credit solutions: http://bit.ly/1U7QeYu

Comments by:
Bockmaker

Xeneon341
https://www.youtube.com/watch?v=ztnin...

sugershakify
https://www.youtube.com/watch?v=ztnin...
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 29/6/2016


Space Weather, Fast Spin, Water, Mars | S0 News Jun.28.2016

                 





Space Weather, Fast Spin, Water, Mars | S0 News Jun.28.2016

Δημοσιεύτηκε στις 28 Ιουν 2016

The Challenge: http://spaceweathernews.com/challenge

#1 Risk to Earth: https://www.youtube.com/watch?v=VVgUZ...

http://www.Suspicious0bservers.org
http://www.SpaceWeatherNews.com
http://www.MagneticReversal.org
http://www.ObservatoryProject.com
http://www.EarthChanges.org

Solar Alerts on Twitter: https://twitter.com/TheRealS0s
THE DISASTER PREDICTION APP: http://kck.st/1RO4K82

Good Videos/Articles:
The Sun is Going to Sleep: https://www.youtube.com/watch?v=7whL9...
Top 6 Climate Change Problems: https://www.youtube.com/watch?v=4Ew05...
Pause on Pausing the Pause: https://www.youtube.com/watch?v=CZH46...
Sun Series: http://www.youtube.com/playlist?list=...
IPCC History: http://www.suspicious0bservers.org/se...

Today's Featured Links:
Lake Mead: https://www.newsdeeply.com/water/arti...
Dead Sea: http://ecowatch.com/2016/06/23/dead-s...
Tropical Records: https://weather.com/storms/hurricane/...
Fast-Spinning Brown Dwarf: http://science.psu.edu/news-and-event...
Mars Past: http://www.jpl.nasa.gov/news/news.php...
Cali Water: https://earth.stanford.edu/news/‘water-windfall’-hidden-beneath-california’s-central-valley

Original music by NEMES1S

WORLD WEATHER:
TY WindMap: https://www.windyty.com
Earth WindMap: http://earth.nullschool.net/#current/...
Global Maps: http://www.atmos.albany.edu/student/k...
NDBC Buoys: http://www.ndbc.noaa.gov/
HurricaneZone Satellite Images: http://www.hurricanezone.net/westpaci...
NOAA Environmental Visualization Laboratory: http://www.nnvl.noaa.gov/Default.php
Satellite Maps: http://www.woweather.com/cgi-app/sate...
Forecast Maps: http://www.woweather.com/weather/maps...
TORCON: http://www.weather.com/news/tornado-t... [Tornado Forecast for the day]
HURRICANE TRACKER: http://www.weather.com/weather/hurric...
GOES Satellites: http://rsd.gsfc.nasa.gov/goes/
THE US WINDMAP: http://hint.fm/wind/
Severe Weather Threats: http://www.weather.com/news/weather-s...
Canada Weather Office Satellite Composites: http://www.weatheroffice.gc.ca/satell...
Temperature Delta: http://www.intellicast.com/National/T...
Records/Extremes: http://www.ncdc.noaa.gov/extremes/rec...

SOHO Solar Wind: http://umtof.umd.edu/pm/
Planetary Orbital Diagram - Ceres1 JPL: http://ssd.jpl.nasa.gov/sbdb.cgi?sstr...
SDO: http://sdo.gsfc.nasa.gov/data/
Helioviewer: http://www.helioviewer.org/
SOHO: http://sohodata.nascom.nasa.gov/cgi-b...
Stereo: http://stereo.gsfc.nasa.gov/cgi-bin/i...
iSWA: http://iswa.gsfc.nasa.gov/iswa/iSWA.html
NASA ENLIL SPIRAL: http://iswa.gsfc.nasa.gov:8080/IswaSy...
Gamma Ray Bursts: http://grb.sonoma.edu/
BARTOL Cosmic Rays: http://neutronm.bartol.udel.edu//spac...
ISWA: http://iswa.ccmc.gsfc.nasa.gov:8080/I...
GONG: http://gong2.nso.edu/dailyimages/
GONG Magnetic Maps: http://gong.nso.edu/data/magmap/ondem...

MISC Links:
OLR: http://www.esrl.noaa.gov/psd/map/clim...
JAPAN Radiation Map: http://jciv.iidj.net/map/
RADIATION Network: http://radiationnetwork.com/
LISS: http://earthquake.usgs.gov/monitoring...
QUAKES LIST FULL: http://www.emsc-csem.org/Earthquake/s...
RSOE: http://hisz.rsoe.hu/alertmap/index2.php [That cool alert map we use]
Moon: http://www.fourmilab.ch/earthview/pac...
ΑΝΑΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 29/6/2016


Δευτέρα 27 Ιουνίου 2016

The Universe: SEARCH FOR E.T - BluRay (Full Documentary Films)

                       



The Universe: SEARCH FOR E.T - BluRay (Full Documentary Films)

Δημοσιεύτηκε στις 21 Μαΐ 2016

In
a galaxy filled with a billion stars, in a universe filled with a
hundred billion galaxies--are we alone? SETI--the Search for
Extraterrestrial Intelligence--is a privately funded project using radio
telescopes.
Director: Tony Long
Writer: Tony Long
Stars: Richard Greenberg, Robert Hurt, Raymond Kurzweil

Thank for watching :D
►Subcriber me for more: https://goo.gl/LqmDVz
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 28/6/2016

Zika outbreak: The mosquito menace

Zika outbreak: The mosquito menace


  • Mosquito
Image copyright SPL
This blood sucker might not be your best friend, but it loves you.
The mosquito, Aedes aegypti, is causing widespread fear in Brazil where it is spreading the Zika virus that has been linked to thousands of babies being born with birth defects.
So what do we know about it?

Οι στατίνες μειώνουν τον κίνδυνο λοίμωξης μετά από εγκεφαλικό


Οι στατίνες μειώνουν τον κίνδυνο λοίμωξης μετά από εγκεφαλικό

Αντιφλεγμονώδη δράση εμφανίζουν τα δημοφιλή χάπια σύμφωνα με αμερικανούς επιστήμονες
Οι στατίνες μειώνουν τον κίνδυνο λοίμωξης μετά από εγκεφαλικό
Τον κίνδυνο λοίμωξης στους ασθενείς που έχουν υποστεί εγκεφαλικό επεισόδιο φάνηκε να μειώνουν οι στατίνες



 
Ουάσινγκτον 
Αμερικανοί επιστήμονες υποστηρίζουν ότι ανακάλυψαν μια νέα ιδιότητα των στατινών, πέραν της μείωσης της χοληστερόλης στο αίμα. Σύμφωνα με στοιχεία που δημοσιεύονται στο επιστημονικό έντυπο Journal of Stroke and Cerebrovascular Diseases, οι στατίνες μπορεί να μειώσουν σημαντικά τον κίνδυνο λοίμωξης στους ασθενείς που έχουν υποστεί εγκεφαλικό επεισόδιο.