Photosynthetic fluorescence emission spectra measurement at the temperature of 77 K (-196°C) is an often-used technique in photosynthesis research. At low temperature, biochemical and physiological processes that modulate fluorescence are mostly abolished, and the fluorescence emission of both PSI and PSII become easily distinguishable. Here we briefly review the history of low-temperature chlorophyll fluorescence methods and the characteristics of the acquired emission spectra in oxygen-producing organisms. We discuss the contribution of different photosynthetic complexes and physiological processes to fluorescence emission at 77 K in cyanobacteria, green algae, heterokont algae, and plants. Furthermore, we describe practical aspects for obtaining and presenting 77 K fluorescence spectra., J. J. Lamb, G. Røkke, M. F. Hohmann-Marriott., and Obsahuje bibliografické odkazy
In this article we introduce the notion of non-home as an attempt of meaningful insight into the migrants’ dwelling constructed from elements of diff erent provenance (family homes, social housing institutions, etc.), depending on tenants housing experiences, defi nitions (knowledge) and the very materiality of a living space. In developing the idea of a non-home we refer to the theoretical concepts of non-places and heterotopias., V tomto článku představujeme pojem ne-domova jako pokus o smyslupný náhled do bydlení migrantů, jenž je zkonstruováno z prvků různé provenience (rodinné domovy, instituce sociálního bydlení apod.) v závislosti na obyvatelských zkušenostech nájemníků, defi nicích (vědění) a samotné materialitě prostoru obydlí. Při rozvíjení myšlenky ne-domova se odvoláváme na teoretické koncepty ne-míst a heterotopií., and Magdalena Łukasiuk, Marcin Jewdokimow.