248 results found for chemistry

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00:06:00

Explaining the Colors of Transition Metal Complexes

by Kevin Seidler
Explaining the Colors of Transition Metal Complexes
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 9 years ago | 3633 views
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00:07:00

Transition Moment Integrals in Different Spectroscopy Methods

by Tristan Harper
Transition Moment Integrals in Different Spectroscopy Methods
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 9 years ago | 1183 views
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00:05:00

Insight into Hydrogen Peroxide Gas Phase Conformation

by Lidong He
Insight into Hydrogen Peroxide Gas Phase Conformation
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 9 years ago | 2699 views
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00:09:00

Rubik’s Cube and Group Theory

by William Neary
Rubik’s Cube and Group Theory
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 9 years ago | 3682 views
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00:06:00

Molecular Bilateral Symmetry of Natural Products: Prediction of Selectivity of Dimeric Molecules by Density Functional Theory and Semiempirical Calculations

by Brandon Fultz
Molecular Bilateral Symmetry of Natural Products: Prediction of Selectivity of Dimeric Molecules by Density Functional Theory and Semiempirical Calculations
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 9 years ago | 1185 views
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00:06:00

Determining IR and Raman Active Molecules

by Robert Kieber
Determining IR and Raman Active Molecules
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 9 years ago | 1562 views
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00:07:00

Silicon-Based Benzene

by Miguel Macias Contreras
Silicon-Based Benzene
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 9 years ago | 4104 views
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00:05:00

Chirality and Group Theory

by Alyssa Rose
Chirality and Group Theory
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 9 years ago | 1519 views
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00:06:00

Silicon-Based Life

by Bart Pratt
Silicon-Based Life
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 9 years ago | 3918 views
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This short piece asks some intriguing questions.

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00:05:00

Fuel Cells – Main Aspects

by Alfonso Felipe
Fuel Cells – Main Aspects
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1397 views
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Fundamental aspects and properties of fuel cells in the environment of renewables.

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00:09:00

Electrochemical Basis of Fuel Cells

by Alfonso Felipe
Electrochemical Basis of Fuel Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1237 views
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Know the basics of electrochemical fuel cells and batteries

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00:10:00

Main Components of a Fuel Cell

by Alfonso Felipe
Main Components of a Fuel Cell
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1335 views
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Learn the basics of a fuel cell

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00:04:00

Classification of Fuel Cells

by Alfonso Felipe
Classification of Fuel Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 2088 views
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Know the most important criteria for the classification of the fuel cells

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00:08:00

Fuels

by Alfonso Felipe
Fuels
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1388 views
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Most used fuel in fuel cells, the advantages of their use and limitations

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00:11:00

Proton Exchange Membrane Fuel Cells

by Alfonso Felipe
Proton Exchange Membrane Fuel Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1268 views
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Basic characteristics of the batteries based on proton exchange membrane

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00:10:00

Transport in PEMFC

by Alfonso Felipe
Transport in PEMFC
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1237 views
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Understand the transport phenomena that take place in the membranes used in PEMFC

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00:13:00

Power Plants

by Alfonso Felipe
Power Plants
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1284 views
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Criteria to classify Fuel Cells

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00:14:00

Fuels. Hydrogen

by Alfonso Felipe
Fuels. Hydrogen
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1279 views
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Understand the advantages and limitations of using hydrogen in fuel cells

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00:12:00

Applications of Fuel Cells

by Alfonso Felipe
Applications of Fuel Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1349 views
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Most important applications in the field of fuel cells

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00:11:00

Deviations from ideal behaviour

by Alfonso Felipe
Deviations from ideal behaviour
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1393 views
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Understanding the phenomena that cause the reduction in efficiency that occurs in the fuel cell operation

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00:08:00

Overpotential

by Alfonso Felipe
Overpotential
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 2728 views
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Polarization curves of the fuel cells, and the phenomena which cause a decline in energy efficiency

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00:11:00

Direct Methanol Fuel Cells

by Alfonso Felipe
Direct Methanol Fuel Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1402 views
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Methanol fuel cells (DMFC), its rationale and the advantages and limitations of their use over other fuel cells

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00:06:00

Alkaline Fuel Cells

by Alfonso Felipe
Alkaline Fuel Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1530 views
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Fundamental aspects of Alkaline Fuel Cells

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00:06:00

Radiation in Your Kitchen: Basic Microwave Oven Physics

by Daniel Julio Domínguez
Radiation in Your Kitchen: Basic Microwave Oven Physics
for 11-14 and upwards,
Teaching modules | 11-14 and upwards | 9 years ago | 3519 views
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They're awesome to have in the kitchen, but did you ever wonder how your microwave actually works? This is a quick introduction to the theory that makes our home microwave ovens possible. Here, Daniel covers the differences between microwave heati....

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00:32:00

Part 3: Selective Microwave Heating of a Polar Reaction Substrate

by Gregory Dudley
Part 3: Selective Microwave Heating of a Polar Reaction Substrate
for 18-22 and upwards22 and upwards,
LecturesPostgraduate presentations | 18-22 and upwards22 and upwards | 9 years ago | 2837 views
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In part three of this three part series, FSU chemist Dr. Gregory Dudley, summarizes the conclusions of ongoing FSU microwave chemistry research. He discusses the implications and future prospects of microwave research, addressing how other labs could....

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00:30:00

Part 2: Selective Microwave Heating of an Ionic Reagent

by Gregory Dudley
Part 2: Selective Microwave Heating of an Ionic Reagent
for 18-22 and upwards22 and upwards,
LecturesPostgraduate presentations | 18-22 and upwards22 and upwards | 9 years ago | 2472 views
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In part two of this three part series, FSU chemist Dr. Gregory Dudley, discusses in depth the microwave chemistry research he's conducted in collaboration with FSU colleague Dr. Al Stiegman. The research outlines Friedel-Crafts substitutions, Aryl-Cl....

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00:30:00

Part 1: Selective Microwave Heating Design and Theory

by Gregory Dudley
Part 1: Selective Microwave Heating Design and Theory
for 18-22 and upwards22 and upwards,
LecturesPostgraduate presentations | 18-22 and upwards22 and upwards | 9 years ago | 3933 views
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In part one of this three part series, FSU chemist Dr. Gregory Dudley, puts forth the controversy that surrounds microwave chemistry research, he outlines physical theory of microwave chemistry, and discusses the research teams central design hypothe....

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00:02:00

Microwave Chemistry Introduction: Your dial goes up to 11

by Gregory Dudley
Microwave Chemistry Introduction: Your dial goes up to 11
for 18-22 and upwards22 and upwards,
DiscussionsLecturesPostgraduate presentations | 18-22 and upwards22 and upwards | 9 years ago | 2942 views
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This is the introduction to a three part research presentation on microwave chemistry given by FSU chemist Dr. Gregory Dudley. Dudley reports on joint FSU research surrounding microwave chemistry and its previously unknown potential in lab applicatio....

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00:05:00

Fuel Cells: Main Aspects

by José Valiente
Fuel Cells: Main Aspects
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1403 views
Rating:

Introduction and short review of fuel cells

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00:08:00

Electrochemical Basis of Fuel Cells

by José Valiente
Electrochemical Basis of Fuel Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1523 views
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Brief review of electrochemical basis of fuel cells

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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
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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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00:35:00

From Disorder to Order

by Gerhard Ertl
From Disorder to Order
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1197 views
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Our experience suggests that a system will usually show the tendency to undergo spontaneously a transition from the state of order into disorder.  Quite in contrast, our world developed from an initial state of great disorder into another one where ....

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00:39:00

Molecular Catalysis for Green Chemistry

by Ryoji Noyori
Molecular Catalysis for Green Chemistry
for 18-22 and upwards,
Lectures | 18-22 and upwards | 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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00:35:00

Designing Molecules and Nanoparticles to Help See and Treat Disease

by Roger Tsien
Designing Molecules and Nanoparticles to Help See and Treat Disease
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1232 views
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Molecules to observe and manipulate biological systems can be devised by a variety of strategies, ranging from pure chemical design and total synthesis to genome mining and high-throughput directed evolution. Examples of both successes and failures a....

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00:40:00

Why I love Microbes

by Richard Roberts
Why I love Microbes
for 18-22 and upwards,
Lectures | 18-22 and upwards | 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 and upwards,
Lectures | 18-22 and upwards | 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 and upwards,
Lectures | 18-22 and upwards | 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 and upwards,
Lectures | 18-22 and upwards | 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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00:12:00

The cell cycle and cancer

by Tim Hunt
The cell cycle and cancer
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 2104 views
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It was in 1882 that Walther Flemming published drawings of chromosomes lining up in mitosis and parting equally to the daughters of cell division, and 20 years later that Theodor Boveri explained the significance of the chromosome dance in terms of t....

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01:05:00

RNAi and development in C. elegans

by Craig Mello
RNAi and development in C. elegans
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 2172 views
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Argonaute proteins interact with small RNAs to mediate gene silencing. C. elegans contains 27 Argonaute homologs, raising the question of what roles these genes play in RNAi and related gene-silencing pathways. Through our collaborator, Dr. Shohei....

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00:51:00

Nitric oxide as a messenger molecule and its role in drug development

by Ferid Murad
Nitric oxide as a messenger molecule and its role in drug development
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1378 views
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The role of nitric oxide in cellular signaling in the past three decades has become one of the most rapidly growing areas in biology. Nitric oxide is a gas and a free radical with an unshared electron that can regulate an ever-growing list of biolog....

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00:39:00

Recent Advances in Olefin Metathesis Catalyzed by Molybdenum and Tungsten Alkylidene Complexes

by Richard Schrock
Recent Advances in Olefin Metathesis Catalyzed by Molybdenum and Tungsten Alkylidene Complexes
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1622 views
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In the process of preparing M(NR)(CHCMe2R')(OR")2 (R' = Me or Ph) species (or analogs that contain enantiomerically pure biphenolate or binaphtholate ligands) in situ by treating M(NR)(CHCMe2R')(pyrrolide)2 species with alcohols, we have discovered M....

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00:35:00

From ‘On Water’ and Enzyme Catalysis to Single Molecules and Quantum Dots, Theory and Experiment

by Rudolph Marcus
From ‘On Water’ and Enzyme Catalysis to Single Molecules and Quantum Dots, Theory and Experiment
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1539 views
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Much of theoretical chemistry has involved equations and their application to experiments, Debye, Debye-Hueckel, Transition State Theory, Kramers, LCAO, RRKM, among others. In fortunate circumstances one can, as in a theory of electron transfer reac....

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00:31:00

Chemistry: the Key to Our Future

by Ryoji Noyori
Chemistry: the Key to Our Future
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1386 views
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Chemistry is not merely a science of making observations in order to better understand Nature. Our science is creative and productive, generating substances of very high value from almost nothing. Chemists already have made enormous contribution to....

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00:34:00

Greenhouse Gases and Climate Change

by Sherwood Rowland
Greenhouse Gases and Climate Change
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1581 views
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The 'greenhouse gases (GHG)' intercept a fraction of outgoing terrestrial infrared radiation, creating the natural greenhouse effect which warmed the atmosphere by approximately 32 Celsius at the beginning of the 20th Century. The activities of manki....

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00:31:00

From Atoms to Complexity: Reactions at Surfaces

by Gerhard Ertl
From Atoms to Complexity: Reactions at Surfaces
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1338 views
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The interaction of molecules with the surfaces of solids forms the basis of heterogeneous catalysis and can now be investigated in atomic detail. Systems of this kind may, on the other hand, serve as models for studying self-organisation of matter le....

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00:23:00

Atmospheric Chemistry and Climate in the Anthropocene

by Paul Krutzen
Atmospheric Chemistry and Climate in the Anthropocene
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1253 views
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Despite their relatively small mass, 10% of the earth biosphere as a whole, generations of ambitious ‘homo sapiens’ have already played a major and increasing role in changing basic properties of the atmosphere and the earth’s surface.  Human ....

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00:30:00

Photosynthesis, Biomass, Biofuels: Conversion Efficiencies and Consequences

by Hartmut Michel
Photosynthesis, Biomass, Biofuels: Conversion Efficiencies and Consequences
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1305 views
Rating:

It is generally accepted that the global warming, which we undoubtedly observe, is the result of an increased concentration of greenhouse gases like carbon dioxide and methane in the atmosphere.  Within this scenario it is evident that we have to re....

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