نتایج جستجو برای: vis spectrometry
تعداد نتایج: 119813 فیلتر نتایج به سال:
Reservation is defined as preserving a clear-cutfraction of seats for reserved classes in government jobs, educational departments, promotions, and legislature also. Reservations can be considered political utensil that provides public good which prevents social economic wrongs. It basically ensures level playing field. In India, the concept reservation system derived due to long-established ca...
We report the synthesis and comprehensive characterization of a series (oligo)thiophene-bridged (bis)phenanthroline ligands. The complexation behavior ditopic ligands with Cu(I) was explored by high-resolution ESI mass spectrometry, UV-vis spectroscopy, electrochemistry. Whereas ligands, in which phenanthrolines are bridged smaller (oligo)thiophene units, provided mainly mononuclear complexes, ...
a method to quick detect concentration of lecithin in eggs, namely microwave digestion spectrophotometry, was established in this research. the homogenate of eggs was treated with absolute ethanol to eliminate phosphate protein in eggs which could possibly affect concentration of lecithin examined. a sample then received a new way of pre-treatment, called microwave digestion, before uv-vis spec...
A series of tetrabutyl ammonium (TBA) salts V-included Keggin-type polyoxoanions with W (TBA4PW11V1O40 and TBA5PW10V2O40) Mo (TBA4PMo11V1O40 TBA5PMo10V2O40) as addenda atoms were prepared using a hydrothermal method. These synthesized materials characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), UV-Vis diffuse reflectance (DRS UV-Vis), thermogravimetric an...
New benzohydrazone compound, 4-amino-N'-[(1E)-1-(2-hydroxy-6-methyl-4-oxo-4H-pyran-3-yl)ethylidene] benzohydrazide (HL1) and its Cu(II), Ni(II), Zn(II) Mn(II) complexes were synthesized. The structures of HL1 elucidated by elemental analysis IR, UV-Vis, 1H 13C NMR spectroscopy mass spectrometry. infrared spectral data the revealed that coordinated with metal ions through azomethine nitrogen, en...
Filtering of signals is of primary importance in signal processing. The design of filters to perform signal estimation is a problem that freeze up in the design of communication systems, control systems, in geophysics & in many other applications & disciplines. Optimum filters are proposed for filtering. In this paper, neural networks have been trained to filter satisfactorily with specified MS...
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