List of Articles irradiance Open Access Article Abstract Page Full-Text 1 - The effect of continuous illumination and photoperiods on growth and heterocyst frequency of cyanobacterium Fischerella ambigua from Golestan province Fereshte Vakili Kayvan Ghorchibeigi Neda Soltani Shadman Shokravi 10.30495/iper.2006.690227 Open Access Article Abstract Page Full-Text 2 - The effect of acidity at limited irradiance on survival, growth, pigment composition and ammonium liberation of soil cyanobacterium Nostoc sp., collected from paddy-fields of Golestan province فریبا Amirlatifi sh Shokravi مریم Safaei زهرا Hosseini kolbadi Open Access Article Abstract Page Full-Text 3 - Growth of Sargassum boveanum (Fucales, Phaeophyta) under variations of temperature, photoperiod and irradiance in laboratory conditions F. Rafiee A. Esmaieli H. Kermanshahi Open Access Article Abstract Page Full-Text 4 - Temperature, photoperiod and irradiance on growth of Gracilaria salicornia (Gracilariales, Rhodophyta), in vitro F. Rafeei P. Nejatkhah Manavi H. Kermanshshi M. Parvaresh Open Access Article Abstract Page Full-Text 5 - Perturb and Observe Maximum Power Point Tracking Method Based on Estimation of Irradiation Change by Independent Component Analysis Sonya Nodehi Mazdak Teimoortashloo