نتایج جستجو برای: activity times
تعداد نتایج: 1440527 فیلتر نتایج به سال:
Objectives: Daily hours" by the word means times. Leisure is the concept of comfort, rest, relation and free of any working situations. And technically; it consists of times and opportunity that have reminded after daily job and performance of any types of activity. Sociologists leisure has anew conceptuality in compare to do believe society in which such phenomenon can't be considered as class...
background: elicitors can trigger defense responses and activate specific genes involved in secondary metabolite biosynthesis. objective: for understanding sa-treatment signaling pathway we determined defense-related compounds and enzymes in s. marianum hairy root cultures. methods: 28 day old hairy roots were treated by salicylic acid (6 mg/50 ml culture) for different times (24, 48, 72, 96 an...
in this paper, fe3o4-chitosan nanoparticles were prepared by the immobilization of chitosan on the surface of fe3o4 nanoparticles. then, the 5-substituted hydantoins were synthesized from the condensation of aldehyde derivatives, ammonium carbonate and zinc cyanide as a well-known cyanating agent by the magnetic fe3o4-chitosan nanoparticles under neat conditions. fe3o4-chitosan nanocatalyst as ...
poly (n-bromosuccinimide) (pnbs) as a mild, efficient, non-acidic, polymeric and heterogeneous catalyst was applied for simple conversion of epoxides into thiiranes by treatment with kscn or (nh2)2cs at room temperature. aliphatic and aromatic epoxides converted into their corresponding thiiranes under mild conditions. all reactions proceeded in short reaction times and afforded the correspondi...
field, Proc. 3rd Annual ACM Symposium on Parallel Algorithms and Architectures, (1991), 180-191. 48. E.Kaltofen and V.Pan, Processor-efficient parallel solution of linear systems II The positive characteristic and singular cases, Proc. 33rd Annual IEEE Symposium on F.O.C.S. (1992), 714–723. 49. E.Kaltofen and B.D.Saunders, On Wiedemann’s method of solving sparse linear systems, in Proc. AAECC-5...
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