نتایج جستجو برای: photosynthetic efficiency

تعداد نتایج: 407355  

Journal: :The journal of physical chemistry letters 2013
Ivan Kassal Joel Yuen-Zhou Saleh Rahimi-Keshari

Recent observations of coherence in photosynthetic complexes have led to the question of whether quantum effects can occur in vivo, not under femtosecond laser pulses but in incoherent sunlight and at steady state, and, if so, whether the coherence explains the high exciton transfer efficiency. We introduce the distinction between state coherence and process coherence and show that although som...

Journal: :Science 2011
Robert E Blankenship David M Tiede James Barber Gary W Brudvig Graham Fleming Maria Ghirardi M R Gunner Wolfgang Junge David M Kramer Anastasios Melis Thomas A Moore Christopher C Moser Daniel G Nocera Arthur J Nozik Donald R Ort William W Parson Roger C Prince Richard T Sayre

Comparing photosynthetic and photovoltaic efficiencies is not a simple issue. Although both processes harvest the energy in sunlight, they operate in distinctly different ways and produce different types of products: biomass or chemical fuels in the case of natural photosynthesis and nonstored electrical current in the case of photovoltaics. In order to find common ground for evaluating energy-...

Journal: Journal of Nuts 2013
A.R. Sajjadinia H. R. Roosta

Photosynthetic rates of six pistachio cultivars were studied including Ohadi, Kalleh-Ghochi, Akbari, AhmadAghaii, Rezaii Zoudras and Haratii. Measurements were done using OFF and ON shoots at different stages of fruit growth and development included: - Beginning of endocarp growth; - pith hardening; - Beginning of endosperm rapid growth; - end of embryo development; - ripening and harvesting ti...

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