Caracterización y evaluación de la radiación solar
Conocer, tanto para sistemas fotovoltaicos aislados como conectados a red, el valor de radiación que recibirá una instalación es un dato importante, que, en el caso de los aislados, servirá para hacer un correcto dimensionado del sistema que asegure un funcionamiento que responda a los requisitos de la instalación.
Fading Dot
This online exhibit is a visual illusion in which a fuzzy blue dot disappears into a green background. The illusion is created by the tiny jittering movements that your eyes are continually making. Take your investigation further by making your own hands-on fading dot illusion - instructions are at the Exploratorium Snack website (see related link).
How to Draw a Water Drop - Step-by-Step
Take a look at the video and learn from the producer of the video as he shows you step by step on how to draw a water drop. (04:27)
Tasting menu: Audio highlights from the July 16th 2016 edition
This week: What’s next for Gibraltar after being hauled out of the EU, how to monitor the high seas for illegal fishing and why Canada is throwing money at whistleblowers’
Jane Austen: Love, Finally
In this video clip, learn how only after her death was Jane's identity revealed to the public by her brother. (1:37)
DNA topoisomerases Topoisomerases create temporary strand breaks in DNA, thereby allowing the DNA to ‘swivel’ around the helical axis and releasing torsional strain within the area before resealing the break. With the cellular DNA in a supercoiled state, topoisomerases play a critical role in regulating both how tightly packed DNA is within the cell and the dynamic state of torsional energies during DNA processing. There are two classes of this enzyme: topoisomerase I (topo I) functions by breaking just one
Potassium Chlorate and Gummy Bear
Molten potassium chlorate is a strong oxidizing agent that reacts violently with sugar. Gummy bears have lots of sugar in them. This video shows what happens when the two are combined. (01:03)
Reaction of Sodium & Chlorine
This is a cool video of a reaction between sodium and chlorine. The experiment is done professionally. (00:51)
Burning Magnesium in Dry Ice
Declan Fleming shows you how to prepare and demonstrate burning
magnesium in solid carbon dioxide (dry ice). This dramatic and beautiful demonstration shows that oxygen isn't always a prerequisite for fire and reveals carbon's place in the reactivity series. (03:14)
Super Absorbent Polymers and Hydrophobic Sand! - Quirkles Science Experiment
Watery William, one of The Quirkles, KOLR 10, and Terri Johnson demonstrate some cool science experiments that involve the properties of water. Learn how jelly crystals (these can expand up to 300 times their original size!) and hydrophobic sand absorb and repel water. (04:22)
Checklist - Language Assistantship
This is a resource released as part of the E-Portfolio Toolkit based on experience of developing the “Year Abroad E-Portfolio”, undertaken by the School of Languages at Leeds Metropolitan University.
Families displaced by Pakistani airstrikes appeal to government to open roads
Residents fleeing from a Pakistan military operation to flush out insurgents appeal to authorities to open up roads so that they can move their families to safety. Natalie Thomas reports.
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Dark Energy
The universe is huge and getting bigger all the time, and we have we have dark energy - the most mysterious force in the universe - to blame/thank for it. Thought to make up more than 70% of the energy in the whole universe, Hank describes how dark energy was theorized to exist, and how scientists are trying to explain it. (03:47)
Interview with L.S. Asekoff
Grace Cavalieri interviews L.S. Asekoff for the Library's Poet and the Poem Series.
Speaker Biography: L.S. Asekoff has published four books of poetry: Dreams of a Work (1994) and North Star (1997) with Orchises Press, and The Gate of Horn (2010) and the verse novella Freedom Hill (2011) with TriQuarterly/Northwestern University Press. His poems have appeared in such magazines as The New Yorker, American Poetry Review, and Ninth Letter, and he has received awards from the New York Foundation fo
Dipper Mouth Blues
Thomas Brothers discusses Louis Armstrong, composer of King Oliver's "Dipper Mouth Blues."
Speaker Biography: Thomas Brothers is professor of music at Duke University.
For captions, transcript, and more information visit http://www.loc.gov/today/cyberlc/feature_wdesc.php?rec=5624.
SWIB12- Culturegraph Authorities
By: SWIB SWIB12- Culturegraph Authorities Markus Geipel, German Nationsl Library (DNB)
SWIB12 - Enrichment of Library Authority files by LInked Open Datat Sources
By: SWIB SWIB12 - Enrichment of Library Authority files by LInked Open Datat Sources, Gerd Zechmeister, Helmut Nagy, Semantic Web Company GmbH
SWIB12 - First Insights into the Library Track of the OAEI
By: SWIB SWIB12 - First Insights into the Library Track of the OAEI Dominique Ritze, Mannheim University Library
Season 2 – Lesson 36 – Coffee Break Spanish We’re returning to another episode featuring María-José and Andrew this week in which María-José will ask the question “¿Qué estás haciendo?” , what are you doing? We’re focusing on the present continuous tense. Please note that lesson 36 of Season 2 was originally known as lesson 236 of Coffee Break Spanish. We have renumbered the lessons of each season as lessons 1-40 to make things more simple for our listeners.
Coming up in this lesson:
Intra Preneur Tim Ogilvie
Design Thinking for the "Intra-preneur"- How to Innovate within a Corporation, Tim Ogilvie, Peer Insight
