Search Results - "Björn, L.O."

Light quality, oxygenic photosynthesis and more by LAZAR, D., STIRBET, A., BJÖRN, L.O., GOVINDJEE, G.

“…Oxygenic photosynthesis takes place in thylakoid membranes (TM) of cyanobacteria, algae, and higher plants. It begins with light absorption by pigments in…”
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Changes in biologically active ultraviolet radiation reaching the Earth's surface by Madronich, S., McKenzie, R.L., Björn, L.O., Caldwell, M.M.

“…Stratospheric ozone levels are near their lowest point since measurements began, so current ultraviolet-B (UV-B ) radiation levels are thought to be close to…”
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The role of UV-B radiation in aquatic and terrestrial ecosystems—an experimental and functional analysis of the evolution of UV-absorbing compounds by Rozema, J, Björn, L.O, Bornman, J.F, Gaberščik, A, Häder, D.-P, Trošt, T, Germ, M, Klisch, M, Gröniger, A, Sinha, R.P, Lebert, M, He, Y.-Y, Buffoni-Hall, R, de Bakker, N.V.J, van de Staaij, J, Meijkamp, B.B

“…We analysed and compared the functioning of UV-B screening pigments in plants from marine, fresh water and terrestrial ecosystems, along the evolutionary line…”
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Effects of increased solar ultraviolet radiation on terrestrial ecosystems by Caldwell, M.M., Björn, L.O., Bornman, J.F., Flint, S.D., Kulandaivelu, G., Teramura, A.H., Tevini, M.

“…Elevated solar UV-B radiation associated with stratospheric ozone reduction may exert effects on terrestrial ecosystems through actions on plants, microbes,…”
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Evolution of UV-B regulation and protection in plants by Björn, L.O., Widell, S., Wang, T.

“…Plants have evolved under the influence of UV-B radiation and have acquired systems for monitoring it and investing appropriate resources for protection…”
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How substantial are ultraviolet-B supplementation inaccuracies in experimental square-wave delivery systems? by Musil, C.F, Björn, L.O, Scourfield, M.W.J, Bodeker, G.E

“…Square-wave (SQW) ultraviolet-B (UV-B: 280–315 nm) radiation supplementation systems continue to be used in outdoor experimental locations due to the…”
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Estimation of fluence rate from irradiance measurements with a cosine-corrected sensor by Björn, L.O.

“…A method is described by which it is possible to measure fluence rate (scalar irradiance) using a cosine-sensitive instrument intended for measurement of…”
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Ozone depletion, ultraviolet radiation and plant life by Björn, L.O, Callaghan, T.V, Gehrke, C, Johanson, U, Sonesson, M

“…Over the last decades (until 1998) the stratospheric ozone over Scandinavia has been depleted at an average rate of 6% per decade (ozone column yearly mean),…”
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Time-resolved studies of light propagation in Crassula and Phaseolus leaves by Johansson, J, Berg, R, Pifferi, A, Svanberg, S, Bjorn, L.O

“…Time-resolved transmittance was used to extract in vivo optical properties of leaves of green plants experimentally. In time-resolved transmittance…”
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An artifact in measurements of in vivo light-induced absorbance changes by Hsiao, K C, Björn, L O

“…The effects of scattered actinic radiation on photomultipliers (Hamamatsu R-562) were investigated. Using cotton-wool to model dense biological preparations,…”
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Photoinactivation of catalases from mammal liver, plant leaves and bacteria. Comparison of inactivation cross sections and quantum yields at 406 nm by Björn, L O

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Photon Migration in Strongly Scattering Media by Pifferi, A., Taroni, P., Valenti, G., Cubeddu, R., Johansson, J., Klinteberg, C.a., Berg, R., Andersson-Engels, S., Svanberg, S., Bjorn, L.O.

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