نتایج جستجو برای: frost damage
تعداد نتایج: 229846 فیلتر نتایج به سال:
In many areas, low temperature is an important environmental limiting factor in production and distribution of horticultural trees and plants. This study was conducted to study the frost tolerance of main local clones of cornelian cherry in Tarom Sofla region, Qazvin, Iran. Cold treatments at 5 levels (+4, +2, 0, -2 and -4 ˚C) at two cooling periods (3 and 5 hours) were arranged as a factorial ...
abstract temperature is the most important environmental factor that affects flowering and fruiting. the temperatures induce reproduction and cause damaging to tree or its crop.this paper analyzed daily minimum temperatures 0.0oc, and maximum temperatures 12.5 oc from october 1 to may 31 at nine sites in olive producing and cultivating regions, and one control station, using thermal adaptabilit...
Seasonal frost or permafrost soils may encounter heave thaw settlement resulting from atmospheric temperature changes and/or heat emanating the resource-carrying pipeline. Notably, these soil movements can damage Thus, various ground stabilization methods have been developed to prevent onset of phenomena in frost-susceptible soils, and application thermosiphons is a representative method. Recen...
This study, with the help of minimum temperature data, has addressed the prediction of frost during 21 years period by means of neural network in Kermanshah province. In order to forecast frost, data were converted to the values between 0 and 1 by means of a subjective and one to one (injective) function. We have used feed-forward neural network by one hidden interior layer with number of chang...
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