نتایج جستجو برای: in laboratory experiment
تعداد نتایج: 17041935 فیلتر نتایج به سال:
to evaluate the effects of calcium on motility patterns of bovine epididymal sperm and to determine the effective calcium concentration, ovine testicles (5 for each experiment day) were picked up in a local slaughterhouse and transported to the laboratory in a cool container (filled wich ice).in laboratory,caudal epididymis was incised and sperm cells were put into petri dishes containing modif...
The aim of this study was to Comparative position of laboratory works in biology textbooks in Iran and United Kingdom. Therefore were selected as sample the biology text book in tenth-grade of both countries, and were analyzed based on the assessment criteria of laboratory works, then was determined the absolute frequency, relative frequency and Percent of relative frequency of each...
Objective: Salt stress is a world-wide problem and soil salinity is common in arid and semi-arid regions. This study was undertaken to investigate salt tolerance in Salsola orientalis in laboratory and natural conditions and recognize the mechanisms that allow it to tolerate these conditions. Methods: This study had two parts of greenhouse and natural habitats. The treatment s...
Objective: Salt stress is a world-wide problem and soil salinity is common in arid and semi-arid regions. This study was undertaken to investigate salt tolerance in Salsola orientalis in laboratory and natural conditions and recognize the mechanisms that allow it to tolerate these conditions. Methods: This study had two parts of greenhouse and natural habitats. The treatment s...
effect of soil solarization on common lambsquarters (chenopodium album l.) control in birjand region
to evaluate the effect of soil solarization on common lambsquarters control (chenopodium album l.), an experiment was conducted at the research farm of college of agriculture, university of birjand.the factorial experiment was performed as a randomized complete block design with three factors including the number of clear plastic layers (uncovered as the control, 1-layer and 2 –layer plastic sh...
Poa genus has a high value for grazing and forage conservation concerning thelivestock. In order to study the impacts of cold temperature and Growing Degree Days(GDD) on seedling morphological trait and phonological development of two speciesinvolving Poa pratensis and Poa trivialis, this research was conducted in laboratory andgreenhouse and outdoor of Research Institute of Forest and Rangelan...
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