182 results found for chemistry

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00:35:00

Chemistry Lab Orientation with Dr. Dillon

by Stephanie Dillon
Chemistry Lab Orientation with Dr. Dillon
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 1617 views
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00:16:00

Fixated on Nitrogen

by Jeffery Leigh
Fixated on Nitrogen
for 14-19 and upwards,
Discussions | 14-19 and upwards | 5 years ago | 939 views
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Sussex University has always supported unusual, interdisciplinary and innovative faculties. A good example of this was the Nitrogen Fixation Centre. Jeff Leigh was part of this exceptional work who's aim was to discover how nature uses nitrogen to cr....

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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 | 764 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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00:33:00

Nanoscopy – allowing molecules to be examined inside living cells

by Eric Betzig
Nanoscopy – allowing molecules to be examined inside living cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 2369 views
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Eric Betzig shared the 2014 Chemistry Nobel prize with fellow American William E. Moerner and Romanian-German Stefan W. Hell for revolutionising science through the development of super-resolved fluorescence to exceed the accepted limits of tradition....

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00:30:00

The Hunt May Be Up for the Carrier of the Diffuse Interstellar Bands and other stories

by Harry Kroto
The Hunt May Be Up for the Carrier of the Diffuse Interstellar Bands and other stories
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 935 views
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The development of radio telescopes has revolutionized our understanding of the molecular constitution of the interstellar medium ISM. A recent surprise that the element carbon had up its sleeve was the existence of C60, Buckminsterfullerene, the thi....

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00:32:00

Fun with Light and Single Molecules

by William Moerner
Fun with Light and Single Molecules
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 677 views
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More than 25 years ago, single molecules were first detected optically, but how do we really detect a single molecule today, and what good is it? It is an amazing fact that you can even detect single molecules with your own eyes. When a new regime of....

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00:29:00

Electron Transfer Theory in Single Molecule Studies of Intermittent Fluorescence of Quantum Dots and in Initial Steps in Dye Sensitized Solar Cells

by Rudolph Marcus
Electron Transfer Theory in Single Molecule Studies of Intermittent Fluorescence of Quantum Dots and in Initial Steps in Dye Sensitized Solar Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 1039 views
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Intermittently fluorescing single molecule systems are found in many materials, including semiconductor quantum dots (QD), dyes on crystalline or nanoparticle film surfaces, and biological systems. The QD's show a ~ -3/2 power law for the distributio....

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00:33:00

Molecules Against Cancer or for Long-Term Memory Storage

by Roger Tsien
Molecules Against Cancer or for Long-Term Memory Storage
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 736 views
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For cancer diagnosis and therapy, we are developing activatable cell penetrating peptides (ACPPs), synthetic molecules with a novel amplifying mechanism for homing to diseased tissues. ACPPs are polycationic cell penetrating peptides whose cellular u....

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00:26:00

NMR in Biology, Chemistry and Medicine

by Kurt Wurthrich
NMR in Biology, Chemistry and Medicine
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 1117 views
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For the discovery of the physics phenomenon of nuclear magnetic resonance (NMR), Felix Bloch and Edward Purcell were awarded the Nobel Prize in Physics in 1952. NMR has then been used in a wide range of fundamental studies in physics, and in the 1960....

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00:35:00

How to Synthesize a Wide Variety of Optically Active Compounds with >99% Optical Purity

by Ei-ichi Negishi
How to Synthesize a Wide Variety of Optically Active Compounds with >99% Optical Purity
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 923 views
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The discovery and synthetic applications of a widely applicable and highly enantioselective (>99% ee) protocol consisting of the 'ZACA reaction' (Zr-catalyzed asymmetric carboalumination of alkenes), purification of the ZACA-products by lipase-cat....

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00:31:00

Catalysis at Surfaces: From Atoms to Complexity

by Gerhard Ertl
Catalysis at Surfaces: From Atoms to Complexity
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 837 views
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This lecture addresses the question if spatio-temporal self-organisation of matter which is so characteristic for living systems can also be verified with a simple inorganic reaction in which the observed phenomena of complexity can be traced back to....

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00:27:00

Roles of the Ubiquitin System in Health and Disease

by Avram Hershko
Roles of the Ubiquitin System in Health and Disease
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 827 views
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The selective degradation of many short-lived proteins in eukaryotic cells is carried out by the ubiquitin-mediated proteolytic system. In this pathway, proteins are targeted for degradation by covalent ligation to ubiquitin, a highly conserved small....

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00:31:00

Structural Aspects of Protease Control in Health and Disease

by Robert Huber
Structural Aspects of Protease Control in Health and Disease
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 822 views
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This lecture starts out with a very brief review of the history of protein crystallography and continue with our studies since 1970 on proteolytic enzymes and their control. Proteolytic enzymes catalyse a very simple chemical reaction, the hydrolytic....

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00:33:00

Towards Adaptive Chemistry

by Jean-Marie Lehn
Towards Adaptive Chemistry
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 862 views
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Molecular chemistry implementing reversible chemical bonds between atoms in molecules, as well as supramolecular chemistry, whose molecular components are held together by intermolecular interactions, are able to undergo a continuous change in consti....

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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 | 1478 views
Rating:

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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00:31:00

Seeing is Believing – A Hundred Years of Visualizing Molecules

by Venkatraman Ramakrishnan
Seeing is Believing – A Hundred Years of Visualizing Molecules
for 18-22 and upwards,
Lectures | 18-22 and upwards | 5 years ago | 692 views
Rating:

It has been a hundred years since molecules were first visualized directly by using x-ray crystallography. That gave us our first look at molecules as simple as common salt to one as complex as the ribosome that has almost a million atoms. In the las....

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01:05:00

Is chemistry really so difficult?

by Andrea Sella
Is chemistry really so difficult?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 5 years ago | 687 views
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Chemistry has progressed in a way few outsiders appreciate. It underpins many other sciences; from genomics and molecular biology, food and sports science, through to cosmology and planetary science. Why hasn't the public impression of chemistry evol....

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00:03:00

C28

by Harry Kroto
C28
for 14-18 and upwards,
Lectures | 14-18 and upwards | 6 years ago | 1237 views
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A brief description of the C28 molecule and its relationship to Uranium

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00:02:00

H2 Molecules in Space: 2 and 3 Body Collisions H3+

by Harry Kroto
H2 Molecules in Space: 2 and 3 Body Collisions H3+
for 14-18 and upwards,
Lectures | 14-18 and upwards | 6 years ago | 2530 views
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A brief description to why it is problematic to make H2 in space, and how H3+ molecules are formed

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00:02:00

The Fundamental Aspect of Chemistry in 1 Minute, the Periodic Table, and Angular Momentum in Quantum Mechanics

by Harry Kroto
The Fundamental Aspect of Chemistry in 1 Minute, the Periodic Table, and Angular Momentum in Quantum Mechanics
for 14-18 and upwards,
Lectures | 14-18 and upwards | 6 years ago | 989 views
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A brief explanation of quantum mechanics, and how it is related to the periodic table and all of life

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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 | 6 years ago | 1105 views
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Dr. Kroto talks about his favorite synthesis reaction in chemistry

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00:02:00

Nitrosethane Moleular Flexibility

by Harry Kroto
Nitrosethane Moleular Flexibility
for 14-18 and upwards,
Lectures | 14-18 and upwards | 6 years ago | 1025 views
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A brief description of one of Dr. Kroto's favorite molecules, nitrosethane

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00:04:00

Lab Synthesis and Radio Detection of Long Carbon Chains HC5N, HC7N, HC9N in Interstellar Space

by Harry Kroto
Lab Synthesis and Radio Detection of Long Carbon Chains HC5N, HC7N, HC9N in Interstellar Space
for 14-18 and upwards,
Lectures | 14-18 and upwards | 6 years ago | 1450 views
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A brief explanation of the methods to creating a carbon chain, and detection of the frequency of a photon emitted by a rotating molecule, and how these methods led to the discovery of new organic compounds in the constellation Taurus

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00:01:00

Sussex Fullerene Chemistry C60Ferrocene Complex, C60Cl6, C60Ph5H

by Harry Kroto
Sussex Fullerene Chemistry C60Ferrocene Complex, C60Cl6, C60Ph5H
for 14-18 and upwards,
Lectures | 14-18 and upwards | 6 years ago | 979 views
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Dr. Kroto talks about three examples of fullerene chemistry

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