A special type of silica-based columns has been recently introduced into the market which is called narrow-bore columns. They have lower internal volume than the standard high-performance liquid chromatography (HPLC) columns and thus reduce the solvent consumption by almost 80%.    A simple, accurate and environmentally friendly reversed phase- HPLC (RP-HPLC method) which could be used in ...

Performance of the conventional narrowband active noise control (NANC) system may degrade severely when the uncorrelated narrowband disturbance noise is present in the system. In this paper, we propose a new hybrid NANC system capable of reducing the primary noise and the uncorrelated disturbance simultaneously. First, some simple analysis is used to show why the NANC system may indicate poor p...

The ∆-operator of the Batalin-Vilkovisky formalism is the Hamiltonian BRST charge of Abelian shift transformations in the ghost momentum representation. We generalize this ∆-operator, and its associated hierarchy of antibrackets, to that of an arbitrary non-Abelian and possibly open algebra of any rank. We comment on the possible application of this formalism to closed string field theory. NBI-...

Multiobjective (MO) optimization is an emerging field which is increasingly being encountered in many fields globally. Various metaheuristic techniques such as differential evolution (DE), genetic algorithm (GA), gravitational search algorithm (GSA), and particle swarm optimization (PSO) have been used in conjunction with scalarization techniques such as weighted sum approach and the normal-bou...

     A special type of silica-based columns has been recently introduced into the market which is called narrow-bore columns. They have lower internal volume than the standard high-performance liquid chromatography (HPLC) columns and thus reduce the solvent consumption by almost 80%.    A simple, accurate and environmentally friendly reversed phase- HPLC (RP-HPLC method) which could be used in ...

the present study deals with development of a floating in-situ gel of the narrow absorption window drug baclofen. sodium alginate-based in-situ gelling systems were prepared by dissolving various concentrations of sodium alginate in deionized water, to which varying concentrations of drug and calcium bicarbonate were added. fourier transform infrared spectroscopy (ftir) and differential scannin...

چکیده به منظور بررسی کارایی چهار علف کش اتال فلورالین، تریفلورالین، پندیمتالین و متری بوزین در مزارع سیب زمینی و روی علف های هرز سلمه و تاج خروس آزمایشی گلخانه ای در سال 1387 در دانشگاه محقق اردبیلی انجام شد. آزمایش ها به صورت پاسخ به دز در قالب طرح کاملاً تصادفی با 4 تکرار و با استفاده از رقم آگریا انجام شد. کلیه علف کش ها در 6 دز به صورت دزهای کاهش یافته تا دزهای افزایشی نسبت به دز توصیه شده ا...

management practices can affect the yield, maturity, and fiber quality of cotton. one practice used to increase yield has been to adjust the spacing between cotton rows. typically cotton is planted in row spaced 70-100 cm apart. ultra narrow row cotton production has been proposed as an economical means to increase yields and reduce production costs. a field study was conducted to assess the ef...