108 results found for Various

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00:04:00

Wingtip Vortices

by Various
Wingtip Vortices
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 7 years ago | 11 views
Rating:

A very well-explained description of the theory of lift and of how the energy-sapping wingtip vortices are created in aircraft flight. This talk was the runner-up in the 2016 Kroto Prize for Innovative Use of Technology in Science Learning. More details | Watch now

00:31:00

Minimizing a Bacterial Genome by Global Design and Synthesis

by Hamilton Smith
Minimizing a Bacterial Genome by Global Design and Synthesis
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 2137 views
Rating:

In 2010, we chemically synthesized the 1078 Kb Mycoplasma mycoides genome and transplanted it into a recipient cell cytoplasm to create a 'synthetic cell', JCVI-syn1.0 (Science, 329, 52-56, 2010). We identified several hundred non-essential genes by ....

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00:39:00

Role of Nitric Oxide and Cyclic GMP in Cell Signaling and Drug Development

by Ferid Murad
Role of Nitric Oxide and Cyclic GMP in Cell Signaling and Drug Development
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1778 views
Rating:

Nitric oxide research has grown rapidly with about 150,000 research publications describing its biological effects. It is an important messenger molecule that affects most tissues and biological processes. Many effects of nitric oxide are mediated by....

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00:31:00

The Adventure of Cold Atoms. From Optical Pumping to Quantum Gases

by Claude Cohen-Tannoudji
The Adventure of Cold Atoms. From Optical Pumping to Quantum Gases
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1328 views
Rating:

Conservation laws are very important in quantum physics. Two examples of applications will be given. First, optical pumping which uses transfer of angular momentum from polarized photons to atoms to produce highly polarized atomic gases. Then, laser ....

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00:33:00

What About Redefining Time Using a Stable Laser?

by John Hall
What About Redefining Time Using a Stable Laser?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1385 views
Rating:

Several laser-based Atomic Clocks now have an accuracy potential of ~2 x10-18, a hundred-fold better than the best achieved after more than 60 years' experience with rf resonances in Cs atoms. Still, this long attention span documents that the Cs Fou....

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00:31:00

Where am I From? Where Are You Going?

by Ryoji Noyori
Where am I From? Where Are You Going?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1363 views
Rating:

Scientific research is a never-ending 'journey of knowledge'. There is more meaning in experiencing various encounters and making a good journey itself than reaching the destination. Basic science has eternal cultural value; it has served to heighten....

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00:04:00

The Science of Chillies

by Various Presenters
The Science of Chillies
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 8 years ago | 1864 views
Rating:

These things are HOT! - and have a variety of biochemical effects.

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00:05:00

What goes up must come down

by Various Presenters
What goes up must come down
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 8 years ago | 1635 views
Rating:

A fascinating discussion between two humanoids about the mystery force of gravity.

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00:06:00

Soil Recovery by Re-use

by Akira Ise
Soil Recovery by Re-use
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 8 years ago | 1599 views
Rating:

Aki decribes her experiments in improving soils using various buffering materials.

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00:05:00

Solar Energy

by Various Presenters
Solar Energy
for 11-14 and upwards,
Highschool presentations | 11-14 and upwards | 8 years ago | 1579 views
Rating:

Sophie and Stephanie take a light-hearted look at solar energy.

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00:06:00

Genetic Engineering

by Various Presenters
Genetic Engineering
for 11-14 and upwards,
Highschool presentations | 11-14 and upwards | 8 years ago | 0 views
Rating:

A discussion of the problems caused by genetic engineering.

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00:05:00

A-maizing Hydrogen

by Various Presenters
A-maizing Hydrogen
for 11-14 and upwards,
Highschool presentations | 11-14 and upwards | 8 years ago | 1841 views
Rating:

Hydrogen - the fuel of the future?

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01:10:00

Bacterial cell walls, antibiotics and the origins of life

by Jeff Errington
Bacterial cell walls, antibiotics and the origins of life
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1247 views
Rating:

The cell wall is a crucial structure found in almost all bacteria. It is the target for our best antibiotics and fragments of the wall trigger powerful innate immune responses against infection. Surprisingly, many bacteria can switch almost effortl....

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01:31:00

Tackling the great challenges of the 21st century

by Various Presenters
Tackling the great challenges of the 21st century
for 14-19 and upwards,
Discussions | 14-19 and upwards | 8 years ago | 1664 views
Rating:

Sir Paul Nurse, President of the Royal Society and Lord Stern, President of the British Academy, discussed the new opportunities – and need – for collaboration between the traditional academic disciplines to respond to the big issues of our time,....

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01:31:00

Ebola: inside an epidemic

by Various Presenters
Ebola: inside an epidemic
for 14-19 and upwards,
Discussions | 14-19 and upwards | 8 years ago | 0 views
Rating:

Find out what we have learnt from the outbreak so far (March 2015) and what is being done to ensure continued resilience to epidemic scenarios.

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01:26:00

Women writing science

by Various Presenters
Women writing science
for 14-19 and upwards,
Discussions | 14-19 and upwards | 8 years ago | 0 views
Rating:

Join us as we celebrate International Women’s Day by exploring the history of women writing about science.  How did early women scientists use writing in order to further their careers? In which ways were they limited by their gender? What influen....

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00:07:00

Can nanocrystals stop the climate change?

by Frank Riehle
Can nanocrystals stop the climate change?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 2710 views
Rating:

Fossil resources are limited and their CO2 emission strongly contributes to the global warming which is mainly responsible for the increasing appearance of natural catastrophes. Renewable biomass which can be converted into various forms of usable en....

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00:09:00

The biology of Striga

by Various
The biology of Striga
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1838 views
Rating:

One of the major parasites is striga, a weed that sucks the juice and nutrients from cereal crops such as millet, sorghum and maize and causes great yield losses. A single striga plant can produce hundreds of thousands of seeds. The seeds are so tiny....

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00:12:00

‘Witch Weed’ – breaking the spell

by Various
‘Witch Weed’ – breaking the spell
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 2779 views
Rating:

Striga (witchweed) is a parasitic weed that seriously constrains the productivity of staples such as maize, sorghum, millet and upland rice on some farms in Uganda.  Kilimo Trust supported this initiative to try and control its spread.

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00:08:00

Human Memory

by Ann Garry
Human Memory
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 9 years ago | 1798 views
Rating:

A look at the various ways we store and information.

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01:08:00

Writing wrongs – Rachel Carson, Silent Spring

by Various
Writing wrongs – Rachel Carson, Silent Spring
for 14-19 and upwards,
Discussions | 14-19 and upwards | 9 years ago | 1313 views
Rating:

What role do literature, science and policy play in protecting the planet? Fifty years since the death of conservationist Rachel Carson, we look at her masterpiece Silent Spring, and ask: "What have we learnt? Listen to our panel of experts: author ....

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00:45:00

On the Genetic Basis of Morphological Evolution

by Christiane Nusslein-Volhard
On the Genetic Basis of Morphological Evolution
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1202 views
Rating:

Darwin's theory of evolution states that variation of the shape and pattern of the adults rather than the embryos are the basis for natural selection. In order to understand how morphological variation arises, it is important to identify the genes th....

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00:30:00

From the Structure of the Ribosome to the Design of New Antibiotics

by Thomas Steitz
From the Structure of the Ribosome to the Design of New Antibiotics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1756 views
Rating:

Structural studies of the ribosome exemplify the evolution of structural studies in cell biology from the early negatively stained images of macromolecular assemblies in whole cells, to a detailed atomic understanding of the mechanism of action of a ....

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00:29:00

Protein Cross Talk in Cell Signaling

by Edmond Fischer
Protein Cross Talk in Cell Signaling
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1319 views
Rating:

The main focus of the talk will be on signaling by tyrosine phosphorylation, which has been directly implicated in the regulation of cell growth, differentiation and transformation. External signals coming in the form of mitogenic hormones and growt....

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00:41:00

Telomeres and Telomerase in Human Health and Disease

by Elizabeth Blackburn
Telomeres and Telomerase in Human Health and Disease
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 2848 views
Rating:

Telomeres are the protective tips that stabilize the ends of chromosomes. The function of telomeres is to allow cells to divide while holding the genetic material intact. Telomeres contain specialized, simple repetitive DNA sequences that, together....

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00:27:00

Which Way For Physics?

by Brian Josephson
Which Way For Physics?
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1102 views
Rating:

This talk describes a new approach to the problem of characterising physical reality, one with the potential to fill in gaps in the conventional understanding of nature. It is based on a different view from the usual one of structure at the finest l....

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00:37:00

Generating the Fuel of Life

by John Walker
Generating the Fuel of Life
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1372 views
Rating:

The lecture will be devoted to the topic of how the biological world supplies itself with energy to make biology work, and what medical consequences ensue when the energy supply chain in our bodies is damaged or defective. We derive our energy from ....

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00:42:00

Short-term Synaptic Plasticity

by Erwin Neher
Short-term Synaptic Plasticity
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 7513 views
Rating:

Our brain is a network of about 10^11 neurons, which are connected via synapses. A neuron typically receives input from about 10000 other neurons, which can be either excitatory or inhibitory. The neuron integrates these inputs and generates an actio....

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00:28:00

From the Structure of the Ribosome to New Antibiotics

by Thomas Steitz
From the Structure of the Ribosome to New Antibiotics
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1490 views
Rating:

Structural studies of the ribosome exemplify the evolution of structural studies in cell biology from the early negatively stained images of macromolecular assemblies in whole cells, to a detailed atomic understanding of the mechanisms of action of a....

More details | Watch now
00:31:00

Forging a Genetic Paradigm for Cancer

by Michael Bishop
Forging a Genetic Paradigm for Cancer
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1384 views
Rating:

It is now axiomatic that, no matter what its causes, cancer ultimately arises from the malfunction of genes. A number of clues prefigured this paradigm: the persistence of the malignant phenotype through countless cell divisions; the mutagenicity of....

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00:31:00

Genes and Proteins that Control Secretion and Autophagy

by Randy Schekman
Genes and Proteins that Control Secretion and Autophagy
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 3349 views
Rating:

The broad outlines of the secretory pathway were established by pioneering EM and cell fractionation experiments conducted by George Palade in the 1960s. Beginning in the mid 1970s and early 80s, my laboratory isolated a series of conditionally leth....

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00:49:00

Dynamics of Chemical Reactions

by Yuan Lee
Dynamics of Chemical Reactions
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1260 views
Rating:

Every macroscopic chemical transformation, whether it is atmospheric ozone depletion or the burning of a candle, consists of millions of microscopic chemical events, which involve collisions between molecules.  It has been the dream of scientists fo....

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00:27:00

Adventures in Nontranslational Research

by Martin Chalfie
Adventures in Nontranslational Research
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1388 views
Rating:

Professor Martin Chalfie regrets the disproportionately high funding of translational research, defined as applied research for the treatment of human diseases.  With examples from the research in his lab he wants to show how important nontranslatio....

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00:26:00

Chemistry of Bioluminescence

by Osamu Shimomura
Chemistry of Bioluminescence
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1387 views
Rating:

There are numerous kinds of luminous organism on earth. Mysterious emission of light from them inspired the curiosity of mankind ever since the ancient times. In history, Raphael Dubois discovered luciferin and luciferase from one of them, a click ....

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00:40:00

Glimpses of Chemical Wizardry

by Dudley Herschbach
Glimpses of Chemical Wizardry
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 968 views
Rating:

In an evangelical spirit, three vignettes will be presented that have the character of molecular parables: stories with lessons that transcend the specific details.(1) How knowledge of the orientation of a methyl group with respect to a neighboring d....

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00:32:00

The Fuel of Life

by John Walker
The Fuel of Life
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1283 views
Rating:

The lecture will be devoted to the topic of how the biological world supplies itself with energy to make biology work, and what medical consequences ensue when the energy supply chain in our bodies is damaged or defective.  We derive our energy from....

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00:30:00

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 | 9 years ago | 1436 views
Rating:

Catalysis by solid surfaces is, among others, of importance for the chemical industry (e.g. the Haber-Bosch process) as well as for environmental chemistry (car exhaust catalyst).  Surface physical techniques enable investigation of the underlying e....

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00:30:00

Cross-Coupling Reactions of Organoboranes: An Easy Way for Carbon-Carbon Bonding

by Akira Suzuki
Cross-Coupling Reactions of Organoboranes: An Easy Way for Carbon-Carbon Bonding
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 2472 views
Rating:

The palladium-catalyzed cross-coupling reaction between different types of organoboron compounds and various organic halides in the presence of base provides a powerful and general methodology for the formation of carbon-carbon bonds.  The (sp3)C-B ....

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00:27:00

Model Synthesis for Ceramics: Superconductors, Magnets and Others

by Karl Muller
Model Synthesis for Ceramics: Superconductors, Magnets and Others
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1272 views
Rating:

The discovery of superconductivity in hole doped La2CuO4 was motivated by the interest to find this phenomenon in an oxide.  After the discovery near 35 K, copper oxides with transition temperatures of up to 131 K at normal pressure were found, i.e.....

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01:11:00

(Re)Inventing science publishing: the Philosophical Transactions of the Royal Society

by Various
(Re)Inventing science publishing: the Philosophical Transactions of the Royal Society
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1661 views
Rating:

Philosophical TransactionsÊis the worldÕs first and oldest scientific journal. Still published by the Royal Society, it is about to mark its 350th anniversary, and was instrumental in establishing many forms and facets of modern scholarly publishin....

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00:22:00

Simulation of cell seeding and cell mechanical forces in tissue engineering

by Damien Lacroix
Simulation of cell seeding and cell mechanical forces in tissue engineering
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 10 years ago | 4709 views
Rating:

A brief description of the factors which are involved in simulating various effects in tissue engineering research.

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00:07:00

The Carbon Revolution 1 – many forms

by Jonathan Hare
The Carbon Revolution 1 – many forms
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 4947 views
Rating:

The differences in the structures and properties of the various allotropes of carbon are clearly explained.

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00:06:00

Concert Hall Acoustics

by Various Presenters
Concert Hall Acoustics
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 10 years ago | 1890 views
Rating:

Physics' students Rosie & Carine explain the physics behind concert hall acoustics.

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00:02:00

Olber’s Paradox

by Various Presenters
Olber’s Paradox
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 10 years ago | 2097 views
Rating:

Students explain why the sky is dark at night, despite there being many billions of bright stars.

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00:54:00

Engineering the structural aspects of carbon nanotubes moving towards a perfect system

by Ankur Baliyan
Engineering the structural aspects of carbon nanotubes moving towards a perfect system
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 10 years ago | 1614 views
Rating:

During his PhD thesis defence, Ankur looks at the ways in which various techniques are used for the creation of the desired structural characteristics of carbon nanotubes  

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00:03:00

Nobel Prize Inspiration Initiative

by Various Presenters
Nobel Prize Inspiration Initiative
for 14-19 and upwards,
Discussions | 14-19 and upwards | 10 years ago | 1944 views
Rating:

A series of videos of Nobel Laureates speaking on everything from their childhoods and careers advice to communicating research

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01:26:00

Curious maths: finding the solution

by Various
Curious maths: finding the solution
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1643 views
Rating:

Unsolved problems in mathematics have intrigued us for centuries. It took over 350 years for anyone to provide a proof for Fermat's Last Theorem, considered by many as the most notorious problem in the history of mathematics, and no one has yet offer....

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01:26:00

Curious maths: finding the solution

by Various
Curious maths: finding the solution
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1607 views
Rating:

Unsolved problems in mathematics have intrigued us for centuries. It took over 350 years for anyone to provide a proof for FermatÕs Last Theorem, considered by many as the most notorious problem in the history of mathematics, and no one has yet offe....

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