28 results found for catalysis

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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 e para cima,
Palestras | 18-22 e para cima | 8 years ago | 1460 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 e para cima,
Palestras | 18-22 e para cima | 8 years ago | 1254 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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00:07:00

Hydrogen fermentation with iron powders

by Yuto Yonebayashi
Hydrogen fermentation with iron powders
for 14-19 e para cima,
Highschool presentations | 14-19 e para cima | 8 years ago | 1529 views
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How iron powder can catalyse bacterial production of hydrogen.

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00:41:00

Climbing the Everest Beyond the Everest

by Ada Yonath
Climbing the Everest Beyond the Everest
for 18-22 e para cima,
Palestras | 18-22 e para cima | 9 years ago | 1724 views
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The challenges associated with pursuing ribosomal crystallography can be described as a series of Everest climbing. At each step, when reaching the summit, a taller and more difficult one became exposed. Snapshots of this story will be described.__....

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00:34:00

Towards Adaptive Chemistry

by Jean-Marie Lehn
Towards Adaptive Chemistry
for 18-22 e para cima,
Palestras | 18-22 e para cima | 9 years ago | 1361 views
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Supramolecular chemistry lies beyond molecular chemistry. It aims at implementing highly complex chemical systems from molecular components held together by non-covalent intermolecular forces and effecting molecular recognition, catalysis and transp....

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00:31:00

Multiscale Simulations of the Functions of Biological Molecules

by Arieh Warshel
Multiscale Simulations of the Functions of Biological Molecules
for 18-22 e para cima,
Palestras | 18-22 e para cima | 9 years ago | 2772 views
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Despite enormous advances in structural studies of biological systems we are frequently left without a clear structure-function correlation and cannot fully describe how different systems actually work. This introduces a major challenge for computer....

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00:39:00

Molecular Catalysis for Green Chemistry

by Ryoji Noyori
Molecular Catalysis for Green Chemistry
for 18-22 e para cima,
Palestras | 18-22 e para cima | 9 years ago | 1355 views
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Science is inevitably intertwined with society.  The state of the art of science, coupled with industrial endeavors, has determined our quality of life.  Chemists are proud of their ability to generate high value from almost nothing by using accumu....

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00:37:00

The Amazing Ribosome

by Ada Yonath
The Amazing Ribosome
for 18-22 e para cima,
Palestras | 18-22 e para cima | 9 years ago | 1362 views
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Ribosomes are the universal cellular machines that act as polymerases that translate the genetic code into proteins. They posses spectacular architecture accompanied by inherent mobility that facilitate their smooth performance in decoding, peptide ....

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00:40:00

Why I love Microbes

by Richard Roberts
Why I love Microbes
for 18-22 e para cima,
Palestras | 18-22 e para cima | 9 years ago | 1530 views
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We live in a fascinating world surrounded by life. Much of that life is clearly visible like the plants and animals that we see every day. However, far more is invisible to the naked eye and it is to this realm, the microscopic world, that I will t....

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00:51:00

Why do we not have a vaccine against TB or HIV (yet)?

by Ralph Zinkernagel
Why do we not have a vaccine against TB or HIV (yet)?
for 18-22 e para cima,
Palestras | 18-22 e para cima | 9 years ago | 1204 views
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Survival of vertebrate hosts against infections depends on important natural or innate resistance mechanisms combined with adaptive immune responses of T and B cells. Infectious agents probe the limit of immune responses and help to characterize thr....

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00:46:00

Darwinian evolution as understood by scientists of the 21st century

by Werner Arber
Darwinian evolution as understood by scientists of the 21st century
for 18-22 e para cima,
Palestras | 18-22 e para cima | 9 years ago | 1801 views
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After a short reminder of the historical development of evolutionary biology, elements to a molecular theory of Darwinian evolution will be presented. Biological evolution is driven by the availability of genetic variants in populations. The occasi....

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00:38:00

Protein Crosstalk in Cell Signaling

by Edmond Fischer
Protein Crosstalk in Cell Signaling
for 18-22 e para cima,
Palestras | 18-22 e para cima | 9 years ago | 1402 views
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This talk concentrates on cellular regulation by tyrosine phosphorylation which has been directly implicated in cell growth, differentiation and transformation. Growth factor receptors transduce their signal by recruiting a multiplicity of adaptor p....

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