Neodgovorena velika pitanja (14. ožujka 2013. godine)

U srijedu, 6. ožujka 2013. godine održao sam na Institutu Jožef Stefan u Ljubljani predavanje "Some physics of viruses and the grand questions still unanswered" ("Nešto fizike virusa i velika, i dalje neodgovorena pitanja"). Na IJSu imaju prekrasnu dvoranu i vrlo dobru opremu za snimanje predavanja te snimatelja koji s vrha predavaonice prati predavača. Tako je nastao i video u prozoru iznad koji možete pogledati klikom na strelicu.

Video zapis koji sam postavio na YouTube kreirao sam montiranjem snimljenog videa predavanja i svojih slajdova, no na portalu >> Videolectures.net imaju napredniji način za simultani prikaz predavanja i slajdova. >> Evo kako to izgleda na primjeru mog predavanja.

Na portalu >> Videolectures.net možete naći i >> arhivu kolokvija na IJSu, ali i ogroman broj drugih predavanja.

Ispod donosim sažetak predavanja koji je bio otisnut i na plakatima koji su predavanje najavljivali:

Seventy years after Schrodinger asked „What is life?“ we know that life is something related to information. But how „non-living“ matter became imbued with information is even a toughest question than the one Schrodinger asked. Most life is complicated, yet there are reasonably simple information-rich complexes that combine the two hallmark molecules of life i.e. DNA (or RNA) and protein – viruses. Viruses have something to do with life, since they propagate, adapt and change (evolve) only in „living matter“, yet whether they themselves are alive or not is not a resolved issue. Thus, they present a system perfectly suited for a physicist interested in questions of biology, since she/he can at least pretend to be studying some sort of a macromolecular complex, not really that different from e.g. microtubule, which is almost certainly not alive. Yet, even such poor-physicist-minded studies do eventually lead to questions that biologists typically ask, such as „What is it good for?“ or „How did it arise in the first place?“. I will illustrate one possible path from the physical studies of virus structure and energetics to these, biologically relevant questions. The particular path will be the one I walked through in my studies of viruses. These include the studies of virus shapes and elasticity, the electrostatic interactions in viruses, and the influence of physical interactions in viruses on their (dis)assembly.

Što se tiče vizualnosti, mnogo toga je već prikazano na stranicama "Konstrukcije stvarnosti", a dijelu koji je novi planiram posvetiti poseban post, kad članak bude objavljen. Od ostalih stvari, možda su zanimljive vizualizacije struktura od sp2 ugljika koje su paralelne strukturama virusnih kapsida i geodetskim kupolama - o tome sam davno napisao i jedan tekst koji >> možete downloadirati na ArXivu. Ispod donosim slajd iz predavanja koji prikazuje gigantske ikozaedarske fulerene i Fullerovu geodetsku kupolu.

gigantski ikozaedarski fullereni i Fullerova geodestka kupola

A ispod evo još jednog koji se tiče geometrije sp2 ugljika. Te sam oblike razmatrao u svom radu >> Energies of sp2 carbon shapes with pentagonal disclinations and elasticity theory.

oblici od sp2 ugljika

Zadnji put osvježeno 14. ožujka 2013. godine