نتایج جستجو برای: 1989 hence
تعداد نتایج: 210787 فیلتر نتایج به سال:
George Wells Beadle [3] studied corn, fruit flies, and funguses in the US during the twentieth century. These studies helped Beadle earn the 1958 Nobel Prize in Physiology or Medicine [4]. Beadle shared the prize with Edward Tatum for their discovery that genes [5] help regulate chemical processes in and between cells. This finding, initially termed the one gene-one enzyme hypothesis, helped sc...
Two 120-d trials (May to September, 1988 and 1989) determined the effects of grazing tall fescue (two varieties) or orchardgrass on forage intake and performance by beef cows. Each summer, 48 cow-calf pairs grazed endophyte-infected Kentucky-31 tall fescue (KY-31), endophyte-free Mozark tall fescue (MOZARK), or Hallmark orchardgrass (OG) pastures (16 pairs/treatment). Forage OM intakes and dige...
Pikeperch (Sander lucioperca) is a species with high nutritional, ecological and commercial values which is endemic in Iran, but its natural stocks are endangered during recent years. Therefore, Iranian Fisheries Organization as the main responsible organization for preservation of aquatic natural stocks of the country planned to stock rehabilitation of this species since 1989. This program had...
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