نتایج جستجو برای: uv vis spectrophotometry
تعداد نتایج: 86997 فیلتر نتایج به سال:
In this work the antimicrobial activity of TiO2 nanopore thin films sensitized by Copper tetracarboxyphthalocyanines (TcPcCu) was investigated. TiO2 thin films were deposited by magnetron sputtering and the sensitization process was done by adsorption process. The samples were characterized by scanning electronic microscopy (SEM), Fourier Transform infrared spectroscopy (FTIR), UV-Vis spectroph...
[1]Zirconametalloarenophanes [Cr(η(5)-C(5)H(4))ZrCp'(2)(η(7)-C(7)H(6))] and [Mn(η(5)-C(5)H(4))ZrCp'(2)(η(6)-C(6)H(5))] (Cp' = C(5)H(4)(t)Bu) have been isolated for the first time. These species represent potential precursors en route to metal-enriched metallopolymers by ROP. The electronic structure was assessed by means of UV-visible spectroscopy and TD-DFT calculations.
A micell-mediated phase separation method for preconcentration of ultra-trace quantities of mercury as a prior step to its determination by UV-Vis spectrophotometry has been developed. The method is based on Hg(II)-dithizone complex formation in alkaline aqueous solution, and extraction of this Hg(II)-dithizone secondary complex into the surfactant-rich phase of the non-ionic surfactant oct...
The manuscript describes a method to obtain spectral aerosol optical thicknesses from measurements with a spectroradiometer in the UV-visible range. The direct solar light is inferred from the difference between total radiation and diffuse radiation. The latter is obtained by the use of a sun blocking disc. An error budget is presented. The results are validated against the measurements with a ...
The avocado plant (Persea Americana Mill.) is a medicinal and belongs to the Lauraceae family which has many properties. Avocado skin contains flavonoid compounds that can be used protect reduce damage due UV rays. active substances contained in americana are flavonoids quercetin. In sample on quercetin as standard solution from peel for avocado. This study aims determine levels of antioxidant ...
The complex-formation equilibria of the system Ni(II)/β-alaninehydroxamic acid (β-AlaHA, LH) have been studied in solution by using potentiometry, calorimetry, ESI mass spectrometry and UV-Visible spectrophotometry. A series of mononuclear and polynuclear species have been identified at different pH and for different Ni(II)/ligand ratios. Among the polymetallic species, we have identified the 1...
Microbial resistance to antibiotics is one of the biggest public health threats of the modern world. Antibiotic resistance is an area of much clinical relevance and therefore research that has the potential to identify agents that may circumvent it or treat resistant infections is paramount. Solution behavior of various fluoroquinolone (FQ) complexes with copper(II) in the presence and absence ...
UV-visible absorption and AFM studies suggest that carboxyphenylethynyl zinc porphyrins aggregate on nanocrystalline TiO2 surfaces in an H-type fashion.
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید