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Borromean tales and chemical complexity
I got a chance to see pioneering supramolecular chemistry supremo, Professor Sir Fraser Stoddartof UCLA on the Cambridge leg of his UK tour on Monday. Sir Fraser took us on a whirlwind tour of the last quarter century of interlocking ring-shaped compounds, molecular dumbbells and the potential of collections of such entities to bring us the next generation of computer memorythat could be fast, high density, and even error self-correcting.
He also took us on a spin through the synthetic tales of how to make Borromean ringson the molecular scale and ways to tie a Solomon knotwith chemistry. It was visually and synthetically beautifulchemistryvisually and synthetically beautiful chemistry, told as eloquently and with the same dry wit as the last time I heard him speak. At that time he and his colleagues had designed the ultimate Olympic symbol from four interlocked molecular rings, something the UK’s Olympic designersshould have perhaps taken to heart with their publicity materials. However, aesthetics aside, Sir Fraser’s real take-home message is that chemistry is not yet the mature science many of its number would suggest. Over the last 150 years chemistry has gathered together many words and even begun putting them together into simple phrases, such as Sir Fraser’s own catenanes and rotaxanes. But, this maturity can be likened to the “maturity” of a toddler, he said. It is now time to stop trying to mimic nature with our chemical structures, turn up the complexity by at least an order of magnitude and Make, Measure and Model. Caffeine Content of Common Beverages Quick reference to caffeine content of selected beverages, including coffee, tea, soft drinks, and energy drinks. Provides a brief introduction to caffeine, "a substance that exists naturally in certain plants. ... It can also be produced synthetically and added to foods and beverages."From the Mayo Foundation for Medical Education and Research. Soybean genome sequenced: Analysis reveals pathways for improving biod Soybean, one of the most important global sources of protein and oil, is now the first legume species with a published complete draft genome sequence. US Climate Change Science Program Making Good Progress, National Acade Climate change research directed by the federal government has made good progress in documenting and understanding temperature trends and related environmental changes on a global scale, says a new report from the National Research Council. The ability to predict future climate changes also has improved, but efforts to understand the impact of such changes on society and analyze mitigation and adaptation strategies are still relatively immature, added the committee that wrote the report. U.S. Environmental Protection Agency (EPA): Beaches Consumer information about topics related to environmental aspects of beaches. Topics include water quality and pollution (sewer overflows, farm animal feeding, trash), health and safety, beach advisories and closings, and more. Includes details about EPA projects related to beach protection. Theorists propose a new way to shine -- and a new kind of star: 'elect Physicists propose there may be a new stage for some dying stars. Dubbed electroweak stars, they are fueled by the conversion of quarks to leptons, which prevents or staves off collapse into a black hole. Improved Adherence To Certain Medications Associated With Longer Survi New research suggests that the pharmacological effects of taking medications such as statins and beta-blockers as prescribed following a heart attack is associated with living longer, according to a study in the Jan. 10 issue of JAMA. Optical Technique Identifies Vulnerable Plaques In Cardiac Patients A catheter-based imaging technology called optical coherence tomography (OCT) can successfully identify the characteristics of coronary plaques in patients with various cardiac symptoms. MehendiWorld.com Information about this type of temporary henna tattoo, which is usually applied to the hands and feet. Includes a brief history; information about mehendi wedding customs in India and how to apply the tattoos; examples of designs; descriptions of red, black, and neutral henna; and more. From an Indian commercial practitioner. New Lab Research May Help Those Deafened By Immune System Attack In thousands of people each year, the body's immune system suddenly attacks the delicate structures of the inner ear - - leaving patients deaf. New research helps explain why, and may lead to a test that will tell patients if rapid steroid treatment might restore their hearing.
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