tlc screening and evaluation of antioxidant, antibacterial activity of onopordon macrocephalum by bioautography methodonopordon known as scotch thistle is a medicinal plant of the asteraceae family that is widely distributed in europe and asia, also it has many valuable medicinal properties as hypotensive and antitumor. thin layer chromatography (tlc) is wildly used in natural product extract a...

Thin layers of tissue and residue are easily misclassified by current electronic cleansing methods for CT colonography. Thereby holes are introduced in the colon wall that hamper visualization and automated polyp detection. We present a thin layer model to detect and characterize such layers to support electronic cleansing. It is shown that the model sustains robust estimation of the location a...

Frey HP and Zieloff K (1992) Qualitative und quantitative Du( nschicht-Chromatographie. Weinheim: VCH. Fried B and Sherma J (eds) (1996) Practical Thin Layer Chromatography: A Multidisciplinary Approach. Boca Raton, FL: CRC Press. Jork H, Funk W, Fischer W and Wimmer H (1990) Thin Layer Chromatography, vol. 1a. Physical and Chemical Detection Methods. Weinheim: VCH. Jork H, Funk W, Fischer W an...

BACKGROUND Bartonella quintana, the etiologic agent of trench fever and other human diseases, is transmitted by the feces of body lice. Recently, this bacterium has been detected in other arthropod families such as bed bugs, which begs the question of their involvement in B. quintana transmission. Although several infectious pathogens have been reported and are suggested to be transmitted by be...

TLC screening and Evaluation of antioxidant, antibacterial activity of Onopordon macrocephalum by bioautography methodOnopordon known as scotch thistle is a medicinal plant of the Asteraceae family that is widely distributed in Europe and Asia, also it has many valuable medicinal properties as hypotensive and antitumor. Thin layer chromatography (TLC) is wildly used in natural product ext...

In this research, the thin films of N-S doped titanium dioxide (TiO2) were successfully prepared by simple sol-gel method in the presence of tetrabutylorthotitanate as a starting reagent. Furthermore, titanium dioxide (TiO2) was functionalized with thiourea. Furthermore, N-S doped titanium dioxides (NSTO) were fixed on glass balls by glass balls fixed-bed reactor system. Besides, the effect of ...

Numerous investigations have been devoted towards understanding the hydrodynamics of gas jets in fluidized beds. However, most of them address the problem from  macroscopic point of view, which does not reveal the true behavior in the jet region at the single particle level. The present work aims to understand the jet behavior from a more fundamental level, i.e. the individual particle leve...

Bioautography is a microbial detection method hyphenated with planar chromatography techniques. It is based mainly on antimicrobial or antifungal properties of analyzed substances. The review discusses three versions of bioautography, i.e. contact, immersion and direct bioautography. The more concern is given to the last one. Many applications are quoted, not only for testing various groups of ...

In this study, we report a 4-fold improvement in fluorescence detection sensitivity as a result of integration of a thin-film mirror onto an Ormocomp-based electrophoresis separation chip. We report fabrication and performance characterization of planar thin-film Al mirrors embedded under the polymer microchannels. Furthermore, we present preliminary work on fabrication of concave thin-film mir...

Integrated particle sensors have been developed using thin-film on ASIC technology. For this purpose, hydrogenated amorphous silicon diodes, in various configurations, have been optimized for particle detection. These devices were first deposited on glass substrates to optimize the material properties and the dark current of very thick diodes (with thickness up to 50 μm). Corresponding diodes w...