نتایج جستجو برای: light and dark
تعداد نتایج: 16903915 فیلتر نتایج به سال:
A relatively new approach to analyzing integrability, based upon differential-algebraic and symplectic techniques, is applied some “dark equations ”of the type introduced by Boris Kupershmidt. These dark have unusual properties are not particularly well-understood. In particular, three-component polynomial Burgers systems studied in detail. Their matrix Lax representations constructed, related ...
Background: St. John’s wort (Hypericum perforatum L.) is an important medicinal plant that has been widely used for its antidepressant properties. Objective: In this study morphological characteristics variation of populations of H. perforatum were investigated. Methods: In this study, different morphological characteristics of 25 H. perforatum populations in Iran’s natural habitats were eva...
dormancy of eastern dodder and african rocket seeds makes the controlof them very difficult in orchards and farms. in order to study the effective factors in dormancy breaking of these two weeds species, a factorialexperiment based on crd with three replications was conducted at the research laboratory of birjand faculty of agriculture in 2008 and 2009. treatments were: control, soaking in sulf...
Drawing upon reflectance behavior of woodland colors involving dark brown in the UV-Vis-IR bands, two colored pigments were used to print cotton/polyester Co/PET goods. Inorganic nanoparticles of TiO2, ZnO and AL2O3 were also loaded onto the printing formulation. The reflectance profile of treated samples was studied using Jasco V-670 reflectance spectrophotometer. SEM analysis of printed fabri...
OBJECTIVE To characterize dark-adapted and light-adapted oscillatory potentials (OPs) in human electroretinogram (EGR) elicited by flashing light stimulation of the same intensity. METHODS Dark- and light-adapted ERGs of normal eyes were studied. The frequency spectra of the extracted dark-adapted OPs and light-adapted OPs were analyzed by a fast Fourier transform. The peak frequency, latency...
Photoperiod is one of the very important environmental factors that extremely affect growth performance, feeding and reproduction of various fish species. Thus In this research effects of different photoperiod regimes on Caspian Salmon during the premature stage (18 months old at the beginning of experiment) were investigated. One thousand liter tank with 20 premature fishs were allocated for e...
Molecular Characterization of Iraqi Local Goat Breeds Using Random Amplified Polymorphic DNA Markers
Cashmere is only produced from Maraz (Kurdi) goat breed in Iraqi Kurdistan Region. The objective of this study was to assess the genetic diversity of different Maraz color types, black goat and Shami breeds using random amplified polymorphic DNA (RAPD) markers. Fourteen primers were used and nine out of them were selected based on their number of bands (NB) and polymorphic characteristics. Thes...
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