Nagy Károly
20
05
09
12
Előadó
A minket körülvevő és a bennünk lévő rendszerek - nagyobb molekuláink, sejtjeink, szerveink, baráti társaságaink, munkahelyünk, a társadalom, amelyben élünk, és az egész Föld - mind-mind hálózatok. E hálózatok hihetetlen módon egyformán viselkednek. Közös vonásaikat, stabilizálásuk módjait mutatja meg az előadás, amely izgalmas utazásra hív az evolúció, a rák, az öregedés, az emberi nyelv, a számítógépes programok, a gazdasági rendszerek és a történelem világába.
The initial part of the lecture gives a concise summary of the three major general features of networks: small-worldness, scale-freeness and nestedness. Weak links stabilize all complex systems. The main part of the lecture shows the validity of this concept in all areas of science. Water-induced weak links in and around proteins help them to change. Protein-induced weak links help the changes of cells and their evolution. The symmetry of our face reflects the internal stability level of our cells. A beautiful, almost symmetrical face shows an optimal mix of stability and change. A forest is a tight ecosystem, where trees are weakly linked and supported by fungi below the earth. A society is stabilized by the small talk and gossip of women. Vice versa, women become psychically stabilized by the cooperative weak links they build. Weak links are necessary for innovations in a society and may only develop if the society has tolerance and trust. Weak links are our investment for the future.
Albert Einstein nevét általában a relativitáselmélettel kapcsolja össze a közvélemény, sokan nem is sejtik, hogy milyen sokoldalú szerepet játszott a 20. század fizikájának és tudományos gondolkodásának alakulásában. Hogy megértsük Einstein munkásságának forradalmi voltát, az előadás röviden bemutatja a fizika helyzetét a 19. század végén, majd áttekinti azokat a területeket, ahol Einstein eredményei új utakat nyitottak a fizika előtt.
The name of Albert Einstein is usually associated by the public with the theory of relativity. There are not many who know he played such a manifold role in the development of physics and scientific thought in the 20th century. In order to understand the revolutionary character of Einstein's works, this lecture will give a short presentation on the status quo in physics at the end of the 19th century, and reviews the areas where the results of Einstein opened up new paths for physics. His discoveries were decisive in the initiation and development of quantum theory and have their impact even today, not only on the scientific way of thinking, but also in the field of applications. The vision created by quantum theory on microparticles, namely their dual- and particle-wave character, is based on the discovery by Einstein of the particle of light, the photon. It only turned out twenty years later, when quantum mechanics was created, that this applies to microparticles in general as well. It is on the basis of his works that the discharge of nuclear power and the physical theory of lasers are based, and the general theory of relativity provides the basis for modern research in physics and cosmology about the structure and development of the Universe.
20
05
09
26
Előadó
A szabadgyökök szerepének megértése forradalmat jelentett az orvostudományban, és alapjaiban változtatta meg a betegségek kialakulásával és kezelésével kapcsolatos felfogásunkat. Az előadás a szabadgyökökkel kapcsolatos tudományos eredmények bemutatásán túl gyakorlati aspektusokat is tárgyal. A szabadgyökök biológiája olyan területekre enged bepillantást, mint a C-vitamin egészségvédő szerepe, az öregedés, a rák, a szívinfarktus, az agyvérzés és a vörösbor védő hatása…
Free radicals are short-lived oxygen- or nitrogen-based molecules that attack - by their chemical properties - various crucially important proteins, but are extinguished themselves as a result of those reactions. The understanding of the role of free radicals proved revolutionary in medical science, and fundamentally changed our approach to the development and treatment of illnesses. Today, the general audience is increasingly interested in free radicals as well. The biology of free radicals sheds new light on seemingly far-off areas, such as the health-protecting role of vitamin C, the biology of ageing, of cancer, of heart attacks, of strokes, and of diabetes, the protective effect of red wine, the increased protection of women against cardiovascular diseases, the new hypertension medicines, and Viagra, the magic pill for the treatment of impotency.