This year's symposium and exhibition Optics + Optoelectronics International Society for Optics and Photonics SPIE was the largest in its 10-years-old-series, it attracted more than 700 participants from around the world. The extent of the introduced technologies and the number of personalities provided the participants with a superior experience and helped interactions and cross-disciplinary synergy. The meeting took place from 13 - 16 April, 2015 and it was one of the most important events in optics and photonics in the Czech Republic within the International Year of Light 2015. and Letošní sympozium a výstava Optics + Optoelectronics mezinárodní společnosti pro optiku a fotoniku SPIE bylo největší za dobu 10 let svého trvání a přilákalo více než 700 účastníků z celého světa. Šíře představených technologií a množství výrazných osobností poskytly účastníkům vynikající zážitek a napomohly jejich vzájemné interakci a propojování i napříč obory. Setkání v pražských Vysočanech 13.-16. dubna bylo jednou z nejvýznamnějších událostí v optice a fotonice v České republice v Mezinárodním roce světla 2015.
V. J. Veksler, D. B. Jefremov, A. L. Minc, M. M. Vejsbejn, F. A. Vodopjanov, M. A. Gašev, A. I. Zejdlic, P. P. Ivanov, A. A. Kolomenskij, J. G. Komar, I. F. Malyšev, A. Monoszon, I. Ch. Něvjažskij, V. A. Petuchov, M. S. Rabinovič, S. M. Rubčinskij, K. D. Sinělnikov, A. M. Stolov ; volně přeložil Josef Veselka., Referát přednesený na Všesvazové konferenci o fyzice částic vysokých energií, Moskva 1956, Obsahuje: referát, který byl otištěn v časopise Atomnaja eněrgija [1(4), 67 (1956)] i český překlad uveřejněný v Pokrocích matematiky, fyziky a astronomie [2(1), 67 (1957)], and Obsahuje bibliografii
In a recultivation area located in Brandenburg, Germany, five types of biocrusts (initial BSC1, developed BSC2 and BSC3, mosses, lichens) and non-crusted mineral substrate were sampled on tertiary sand deposited in 1985- 1986 to investigate hydrologic interactions between crust patches. Crust biomass was lowest in the non-crusted substrate, increased to the initial BSC1 and peaked in the developed BSC2, BSC3, the lichens and the mosses. Water infiltration was highest on the substrate, and decreased to BSC2, BSC1 and BSC3. Non-metric multidimensional scaling revealed that the lichens and BSC3 were associated with water soluble nutrients and with pyrite weathering products, thus representing a high nutrient low hydraulic feedback mode. The mosses and BSC2 represented a low nutrient high hydraulic feedback mode. These feedback mechanisms were considered as synergic, consisting of run-off generating (low hydraulic) and run-on receiving (high hydraulic) BSC patches. Three scenarios for BSC succession were proposed. (1) Initial BSCs sealed the surface until they reached a successional stage (represented by BSC1) from which the development into either of the feedback modes was triggered, (2) initial heterogeneities of the mineral substrate controlled the development of the feedback mode, and (3) complex interactions between lichens and mosses occurred at later stages of system development.
Al3+ in combination with kinetin showed more protection against degradation of chlorophyll (Chl) and protein than Al3+ or kinetin alone during dark-induced senescence in wheat primary leaf segments. MV-dependent whole chain electron transport, photosystem (PS) 2 mediated oxygen evolution, and PS1 activities were also delayed to a greater extent. Absorbed excitation energy distribution was more in favour of PS1 in Al3+ plus kinetin-treated leaf thylakoids at 72 h. and D. Subhan, S. D. S. Murthy.