248 results found for chemistry

Twenty three year old Rachel is a Cambridge trained biochemist who has been taken on by Heston Blumenthal, owner of the Fat Duck at Bray, to carry out research for her PhD into the molecular make up of flavours and how they can be applied to food in ....

Radioastronomical observations of our galaxy have revealed hordes of molecules in the interstellar medium. Extremely fast reactions result in the high abundance of complex organic compounds in the space between the stars. Amazingly, the key to all th....

In 1985 an experiment, designed to unravel the carbon chemistry in Red Giant Stars, revealed the existence of C-60 Buckminsterfullerene (the third allotropic form of carbon). The story of the discovery and the way its symmetry relates to the natural ....

An introduction to constructing and recognising chemical formulas. Using 20 well-known elements, the valency-rules which govern the atomic ratios are explained and used with several examples.

An introduction into the writing down of fully balanced chemical equations. The process is explained starting with word equations, finding all the relevant formulas and then working with some useful rules for finding the correct coefficients in the b....

The concept of oxidation and reduction is explained and generalised using oxidation numbers with ionic and covalent examples. Several equations are balanced, using the oxidation number method to fix various atomic ratios.

We are faced with energy challenges and the promise of power with hydrogen. The fuel cell and solid state hydrogen storage methodologies are currently limited by materials and represent the cutting edge of energy technology. Implementation to a real ....

Many products you use everyday are the direct result of synthetic innovation in organic chemistry. The McQuade group is interested designing catalysts to aid in more efficient synthetic transformations. n We are especially interested in the effect of....

Some heart arrhythmias are produced by the presence of additional pacemakers in the heart. Those pacemakers are death tissues or scars that trap electrical waves. As an analogy, we pinned scroll waves to obstacles using the Belousov-Zhabotinsky react....

We have synthesized different alkali metal peroxychromates and K3NbO8 doped with K3CrO8crystals based on rare oxidation state of Chromium (V).We have studied their spectroscopic properties using EPR and pulsed EPR. Coherent spin manipulation on Cr+5 ....

The ultrahigh mass resolving power and sub-ppm mass accuracy of Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) allow the assignment of a unique molecular formula to each peak in the mass spectrum. Ionization methods for petro....

Etherification and olefination reactions play an important role in synthetic organic chemistry on a daily basis. As organic chemists we apply these methods to tackle synthetic targets of ever increasing complexity. As a graduate student in the Dudley....

The development of reliable molecular scale building blocks for the construction of nanoscale devices is one of the greatest challenges for the development of numerous applications of these exciting materials. This research describes our efforts in t....

Nobel laureate, Harry Kroto, interviews Michael Kasha, who has had a distinguished career in science. He was at Berkeley during the Manhattan Project, worked as a graduate student with G N Lewis, is a member of the National Academy of Sciences and ha....

Takeshi Oka, Professor of Astronomy at the University of Chicago and discoverer of H3(+), positively ionised molecule of three protons, talks about the ways in which the various aspects of science are are all interlocked. In particular he shows the ....

Dan Nocera of MIT gives a review of the world's current power demand and projects it forward to 2030. By using readily available data he shows that providing the increase needed is remarkably difficult given the need to restrict the production of ca....

Dan gives a brief introduction into his group's discovery of a new and efficient catalyst which could be of vital importance in our search for better ways of capturing solar energy.

A presentation about the importance of nanoscience (chemistry) and its links with technology in the 21st century.

The advantages and problems of organic light emitting diodes. Synthetic polyelectroltye methods are described.

A7r5 smooth muscle cells cultured on different polyelectrolyte multilayer (PEMU) thin films behaved differently. Cells Adhered and spread well on nafion terminated PEMUs, they attached less and migrated more on poly(allylamine hydrochloride) (PAH) te....

The importance of electron orbital angular momentum in the processes that contribute to resistivity.

An introduction to acids and bases using simple kitchen equipment and some 'invisible ink'.

Ligand exchange reactions were utilized in the production of aggregation-resistant gold nanoparticles, having an average diameter of 5 nm, comprising a gold core capped with a mixed shell of citrate and zwitterionic ligands. The prepared nanoparticl....

A moving address by Harry to the ACS meeting in San Francisco about his colleague and fellow Nobel Prize winner, Richard Smalley.