Results 201 to 210 of about 3,594,215 (244)
Advanced Materials Interfaces, EarlyView.By analyzing the thermal‐mechanical properties and molecular‐scale interactions in polyacrylamide (PAAM) hydrogels, this research demonstrates a rubber‐glass‐crystal phase transition under the combined stimuli of temperature and moisture. Because of these hybrid phase transitions, PAAM hydrogels exhibit shape memory behavior in thermal and moist ...
Shuai Xu +7 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.Thin SiGe buffer layers are grown by oxidative solid‐phase epitaxy, resulting in a nanopatterning of varying Ge concentration across the surface of the sample. The nanopatterning is caused by a hexagonal network of dislocations on the SiGe/Si(111) interface, and is visible by scanning electron microscopy, providing a non‐destructive method for ...
Sophie E. Bierer +7 more
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Dynamics of photosynthesis in fluctuating light
Current Opinion in Plant Biology, 2006 Our understanding of the molecular mechanisms of plant photosynthesis is expanding from insights into static fluxes in constant irradiance to an understanding of complex dynamic patterns in fluctuating light. Knowledge about regulatory interactions, information about relevant biological features that emerge in fluctuating light, and the new standards ...
Uwe, Rascher, Ladislav, Nedbal
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Light Harvesting in a Fluctuating Antenna
Journal of the American Chemical Society, 2014One of the major players in oxygenic photosynthesis, photosystem II (PSII), exhibits complex multiexponential fluorescence decay kinetics that for decades has been ascribed to reversible charge separation taking place in the reaction center (RC). However, in this description the protein dynamics is not taken into consideration.
Chmeliov, J. +3 more
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PHOTOSYNTHETIC RESPONSE OF STREAM PERIPHYTON TO FLUCTUATING LIGHT REGIMES
Journal of Phycology, 1999 An experiment was conducted on intact algal assemblages of stream periphyton to test their response to fluctuating and constant light regimes having the same mean intensity.
Todd Wellnitz
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Photosynthesis in Fluctuating Light
Ecology, 1969Experiments were conducted to test the assumption, always made in models of the productivities of higher plant communities, that photosynthetic rates measured in steady light can be used to predict the rates in fluctuating light. The photosynthetic rates of whole cucumber plants (Cucumis sativus) were measured in light which alternated between high and
K. J. McCree, R. S. Loomis
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Theory of photoelectric detection of light fluctuations
Proceedings of the Physical Society, 1964The basic formulae governing the fluctuations of counts registered by photoelectric detectors in an optical field are derived. The treatment, which has its origin in Purcell's explanation of the Hanbury Brown-Twiss effect, is shown to apply to any quasi-monochromatic light, whether stationary or not, and whether of thermal origin or not.
L. MANDEL, E.C.G. SUDARSHAN, E. WOLF
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Light Fluctuations and Photosynthesis
Annals of Botany, 1974The effects of fluctuating light on photosynthesis are examined. A simple model of leaf photosynthesis is used so that the analysis can be presented in explicit terms, the time-dependent problem is solved, and the response of photosynthesis to step changes in light-flux density is calculated.
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Dynamic response of photorespiration in fluctuating light environments
Journal of Experimental Botany, 2022Abstract Photorespiration is a dynamic process that is intimately linked to photosynthetic carbon assimilation. There is a growing interest in understanding carbon assimilation during dynamic conditions, but the role of photorespiration under such conditions is unclear.
Xinyu Fu, Berkley J Walker
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Light fluctuations in the laser
International Laser Science Conference, 1986When the working point of a laser is taken through its threshold of oscillation, the optical field undergoes an order-disorder type of phase transition, which is manifest in the statistics of the emitted light photons, and has been studied experimentally by photoelectric counting and correlation measurements. In a single-mode laser the phase transition
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