نتایج جستجو برای: light and dark
تعداد نتایج: 16903915 فیلتر نتایج به سال:
Light is important for the production of metabolites by plant cell culture. It is therefore necessary to evaluate the light conditions with respect to exposure time. Both enhancement and inhibition have been observed depending on exposure time and species. Callus culture of D. nervosa was established and effect of light and passage on cardiac glycoside production was studied. In vitro cultures ...
: Optical separate spatial dark and bright soliton pairs in steady-state case in one dimension, for a series circuit consisting of two-photon photorefractive (PR) crystal are investigated. Each crystal can be supported the spatial soliton, and at least one must be photovoltaic. The two solitons are known collectively as separate spatial soliton pairs with dark–dark, bright–dark and bright–brigh...
the experiment was conducted to determine the effects of different photoperiods and darkness on the growth and survival of juvenile catla catla in the laboratory for 90 days. fishes were divided into four aquaria (10 fish per aquarium), and subjected to different photoperiod regimes of 8 hours light: 16 hours dark (8l:16d), 16 hours light: 8 hours dark (16l:8d), continuous light (24l:0d) and co...
Background : Evidence indicates that the orbitofrontal cortex (OFC) in the brain is probably invoemotional learning. The aim of the present study is to evaluate the role of OFC on spatial memory in dark and light area in rotation arena in place avoidance learning model. Material and methods : Long-Evans strain rats (280-300gr) were surgically implanted bilaterlved in ally with cannulae aimed at...
background & aim: saffron extract is widely used in the food industry. saffron (crocus sativus l.) stigmata contain rare water-soluble carotenoids and the major one is crocin and this compound have a antitumor in rate and human losomi cells and other model of cancer cells. in this research, we are study on effects of cultivation condition and storage on dried stigmata of crocus sativus l...
Growth in animals is controlled by genetic, environmental, and nutritional factors, including external factors (temperature, pressure, salinity, and light) in the evolution of cold-blooded animals. In this study, the effects of three different light treatments on the growth and survival rates of guppy larvae (Poecilia reticulata) were investigated. The larvae of this species with an average ini...
light, amber and dark colored kernels were rated by eye on a scale of 3 different genotypes (zh1, zh2 and zh3). the oil content was measured using the soxhlet extraction method, ranged from 57.26 to 68.29%, for zh1 (light) and zh2 (amber) respectively. fatty acid compositions were measured using gas chromatography. the main fatty acids were linoleic, oleic and linolenic acids, respectively. als...
In this study, the morphology and organization of the retina of Caspian kutum and fish response to ambient light as retinomotor reaction was investigated. The Rutilus frisii subsp. kutum is an anadromous fish and important native fish specimen of Caspian Sea. The specimens were obtained from Shahid Ansari Teleost Reproduction and Culture center (Guilan province, Iran). For light and dark adapta...
Background & Aim: Saffron extract is widely used in the food industry. Saffron (Crocus sativus L.) stigmata contain rare water-soluble carotenoids and the major one is Crocin and this compound have a antitumor in rate and human losomi cells and other model of cancer cells. In this research, we are study on effects of cultivation condition and storage on dried stigmata of Crocus ...
Background & Aim: Saffron extract is widely used in the food industry. Saffron (Crocus sativus L.) stigmata contain rare water-soluble carotenoids and the major one is Crocin and this compound have a antitumor in rate and human losomi cells and other model of cancer cells. In this research, we are study on effects of cultivation condition and storage on dried stigmata of Crocus ...
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