due to the importance of production and propagation of virus-free potato plants, some of the factors involved in the propagation of potato (plantlet production and virus-free in vitro microtuberization) has been studied. in most reports, adding a mixture of amino acids play an important role in plant tissue culture and development of the explants in many cases increase. this experiment was cond...

background: toxoplasma gondii is an obligatory intracellular protozoan parasite on which studies are pending regarding production of vaccine. to date, the production of human vaccine has not been successful where approximately one third of the world’s population is thought to be infected with t. gondii. objectives: the present study was designed to compare the electrophoretic patterns of t. gon...

because of production process and constrains conditions, circular graphene sheet may be opposed to structural defect and pin hole, respectively. some of the defects and pin hole on a circular graphene sheet can be considered as an eccentric hole on the sheet. hence, analyzing behavior of circular graphene sheet with an eccentric hole is important. free vibration of an eccentric annular graphene...

Abstract Biodiesel is a reliable and promising replacement of fossil diesel. It stable, less toxic can be produced from sustainable resources, including variety raw materials. Currently, the most widely used are vegetable oils (edible nonedible), due to their availability. The present paper considers potential obtaining fatty acid ethyl esters (FAEE) corn oil, which byproduct bioethanol product...

salicylic acid (sa) and methyl jasmonate (meja) as phytohormone regulate synthesis of secondary metabolites in a wide range of plant species thereby accumulation of phenylalanine ammonia lyase enzyme (pal) and accelerate of oxygen free radicals, protein kinas and no production. the present research designed to evaluate effect of sa and meja elicitation on accumulation of phenolic compounds, fla...

A context-free grammar is a single-tree grammar (STG) if every nonterminal symbol has at most one production rule whose right hand side contains nonterminal symbols. Various properties of this class of grammars are studied. Although most properties of STG’s are undecidable, every linear STG generates a bounded language and a deterministic context-free language, so most properties of linear STG’...

The esterification of free fatty acids (FFA) with methanol is studied using Sulfonated Porous Carbon (SPC) as catalyst. In compare to the amorphous sugar catalyst and protonated Nafion, the proposed catalyst shows stability and high efficient performance in biodiesel production. The highest initial rate of oleic acid conversion is obtained at catalyst loading of 1 mmol H+ and mole ra...