46 results found for water

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00:07:00

Self-assembled nanoparticles using a mixture of temperature responsive copolymers

by Yohei Kotsuchibashi
Self-assembled nanoparticles using a mixture of temperature responsive copolymers
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 646 views
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Temperature responsive polymer is an interesting material that shows reversible hydration/dehydration behavior in water at 32C, termed as the lower critical solution temperature (LCST). In this video, temperature responsive block copolymers are focus....

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00:32:00

Aquaporin Water Channels – From Atomic Structure to Malaria

by Peter Agre
Aquaporin Water Channels – From Atomic Structure to Malaria
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 1241 views
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Aquaporin channels allow water to rapidly cross cell membranes in all living organisms. AQP1 confers red cells and proximal renal tubules with high water permeability. Present in renal collecting duct, AQP2 is regulated by vasopressin, and human muta....

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00:06:00

Stream affect barnacles shell direction

by Shokichi Sugihara
Stream affect barnacles shell direction
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 5 years ago | 855 views
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An interesting look at how the direction of water flow affects shell growth in barnacles.

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00:01:00

Creativity Synthesis Chemistry: CO2 + Water +Photons

by Harry Kroto
Creativity Synthesis Chemistry: CO2 + Water +Photons
for 14-18 and upwards,
Lectures | 14-18 and upwards | 5 years ago | 1009 views
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Dr. Kroto talks about his favorite synthesis reaction in chemistry

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00:11:00

Quality in Buildings – Pitched roofs

by Esther Ochoa
Quality in Buildings – Pitched roofs
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 718 views
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Work Inspection in a Construction Process. The work inspection at Pitch Roofs

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00:11:00

Quality in Building – Flat Roofs

by Esther Ochoa
Quality in Building – Flat Roofs
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 722 views
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Work Inspection in a Construction Process. The work inspection at Flat Roofs

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00:32:00

Man vs. Helicobacter _ The past 50,000 years and the next 50

by Barry Marshall
Man vs. Helicobacter _ The past 50,000 years and the next 50
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 1084 views
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The epidemiology of Helicobacter pylori continues to be an area of discovery and controversy in the 21st century. The transmission of this bacterium from mother to child allows Helicobacter DNA to mimic the evolution of maternal mitochondria DNA. B....

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00:39:00

You can see a lot by observing: Optical Microscopy 2.0

by Steve Chu
You can see a lot by observing: Optical Microscopy 2.0
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 867 views
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Biological research and medicine were transformed by the invention and improvement of the optical microscope. Since the early 1990s, there has been another revolution in optical imaging, and manipulation of individual biological molecules and bio-mo....

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00:32:00

Aquaporin Water Channels _ From Atomic Structure to Malaria

by Peter Agre
Aquaporin Water Channels _ From Atomic Structure to Malaria
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 2499 views
Rating:

Aquaporin (AQP) water channel proteins enable high water permeability in certain biological membranes. Discovered in human red cells but expressed in multiple tissues, AQP1 has been thoroughly characterized and its atomic structure is known. Expres....

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00:29:00

Membrane Proteins: Importance, Functions, Mechanisms

by Hartmut Michel
Membrane Proteins: Importance, Functions, Mechanisms
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 705 views
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Biological membranes define and compartmentalize the cells of higher organisms. Consisting of membrane proteins and lipids, they are basically impermeable for ions and polar substances, so that electric voltages (_membrane potentialsî) and substanc....

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00:28:00

DNA between Physics and Biology

by Luc Montagnier
DNA between Physics and Biology
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 1239 views
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The association of DNA with water is known since the deciphering of its double helical structure by X-Ray diffraction in 1953 (Watson, Crick, Wilkins and Franklin). However the power of DNA for organizing water seems to go far beyond the direct fill....

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00:28:00

Canoeing in the Arctic, a Scientist’s Perspective

by Peter Agre
Canoeing in the Arctic, a Scientist’s Perspective
for 18-22 and upwards,
Lectures | 18-22 and upwards | 6 years ago | 979 views
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As scientists, our livelihoods are supported by teaching and research, but we also have the opportunity to make observations beyond our usual confines and share these with non-scientific citizens. Growing up in my native state of Minnesota, I have al....

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