نتایج جستجو برای: mass spectroscopy
تعداد نتایج: 633953 فیلتر نتایج به سال:
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چکیده ندارد.
Providing an accurate, representative sample of mass flux across large open areas for atmospheric studies or the extreme conditions a hypersonic engine is challenging traditional intrusive point-based sensors. Here, we demonstrate that laser absorption spectroscopy with mode-locked frequency combs can simultaneously measure all components (velocity, temperature, pressure, and species mole fract...
New complexes of nickel (II) have been synthesized in the reaction mixture of nickel (II) acetate and 4-hydroxy-2-oxo-2Hchromene-3-carboxamide. Bis(4-hydroxy-2-oxo-2H-chromene-3carboxamidato-O,O)nickel (II) and diaquabis(4-hydroxy-2-oxo-2Hchromene-3-carboxamidato-O,O)nickel (II) were characterized by elemental analysis, IR spectroscopy and ESI mass spectrometry. Elemental analysis and mass spec...
در این پروژه از دو روش ریز استخراج فاز مایع (lpme) ایستا و پویا برای استخراج هیدروکربنهای آروماتیک (pahs) از نمونه های آبی استفاده شد. gc/ms برای جداسازی و اندازه گیری آنالیتها مورد استفاده قرار گرفت. در روش ایستا استخراج توسط یک قطره 12 میکرولیتری تولوین, آویزان از نوک سوزن یک سرنگ 50 میکرولیتری انجام گرفت. 0/18 میلی لیتر محلول آبی برای استخراج استفاده شد. بعد از گذشت مدت زمان مشخص استخراج, ق...
The Present study summarizes the biosynthesis, characterization and optimization of auxins by Piriformospora indica and its effect on the growth of Solanum melongena L. cultivars. The biosynthesis of auxins was greatly influenced by the addition of tryptophan. Based on the data obtained from traditional one factor at a time method, optimization was carried out using the response surface methodo...
Mass spectrometry (MS) is a powerful analytical tool with many applications in pharmaceutical and biomedical field. The increase in sensitivity and resolution of the instrument has opened new dimensions in analysis of pharmaceuticals and complex metabolites of biological systems. Compared with other techniques, mass spectroscopy is only the technique for molecular weight determination, through ...
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