نتایج جستجو برای: visible spectrometry techniques
تعداد نتایج: 787875 فیلتر نتایج به سال:
This paper proposes a hardware-efficient architecture design of wavelet-based adaptive visible watermarking. Our method adopts discrete wavelet transform (DWT) to embed visible watermarking. We perform this algorithm using hardware-efficient architectures that combine operational reduction and resource sharing techniques. Our method provides high quality visible watermarking image and small har...
Extracts of Phanerochaete chrysosporium cultures grown on birch or on a malt extract-peptone-glucose agar medium were analysed by HPLC. A major component from the two sources appears to be identical by HPLC and UV-visible spectrometry. The product isolated from agar-grown cultures was purified to apparent homogeneity and structure analysis by NMR indicates that the metabolite is the beta-resorc...
The photochemical reactivity of osmocene in a biphasic water-organic solvent system has been investigated to probe its water splitting properties. The photoreduction of aqueous protons to hydrogen under anaerobic conditions induced by osmocene dissolved in 1,2-dichloroethane and the subsequent water splitting by the osmocenium metal-metal dimer formed during H(2) production were studied by elec...
This Application Note describes the development of reliable quality control methods for analysis of individual traditional Chinese medicines (TCMs) and TCM formulations using rapid resolution liquid chromatography with UV-visible and quadrupole mass spectrometry detection. The chromatograms obtained with UV and MS detection for different individual TCMs are compared and the combination of UV an...
Crude ether extracts of green shoots of Cucumis sativus L. promoted the elongation of cucumber hypocotyl segments. Purification of the extract was accomplished by DEAE cellulose, silicic acid, and magnesium silicate chromatography followed by gel filtration and preparative thin layer chromatography. Identification of the growth promoter as indole-3-ethanol was achieved by mass spectrometry, thi...
In the present study, the interaction between water-soluble cationic asymmetric porphyrin, 5-(1-Hexadecyl pyridinium-4-yl)-10, 15, 20-tris (1-Butyl pyridinium-4-yl) Porphyrin Chloride, and its copper (II) derivative with calf thymus DNA (CT-DNA) were studied by means of spectroscopic techniques, viscosity measurements and molecular docking. The monitoring of the changes in visible absorbance sp...
Fungal diseases are currently a serious public health problem, due to the limited number of really effective principles, and the emergence of resistant strains to the polyenic antifungals. The aim of this study was to screen, for non-polyenic antifungals production by Actinobacteria, and to validate the screening program by characterizing the produced compounds. Actinobacteria isolates were tes...
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