Molecular motors are found throughout the cells of the human body and have many different and important roles. These micromachines move along filament tracks and have the ability to convert chemical energy into mechanical work that powers cellular motility. Different types of motors are characterized by different duty ratios, which is the fraction of time that a motor is attached to its filamen...

The paper covers state of the art and latest development of piezoelectric motors at Kaunas University of Technology (Lithuania), that are related to the R&D of laser scanning and deflecting devices, measuring systems, nano-resolution positioning devices on the plane, various applications including teaching aids for Mechatronics studies and even “intelligent” toys. All presented motors are oneor...

Changes in color and stability of cyanidin 3-O-β-glucopyranoside (Cy3Glc) aqueous solutions were investigated at pHs from 0.5 to 13.1, by combination colorimetry spectr...

A popular colorimetric analysis for serum acetaminophen, based on ring-nitration of the drug, is demonstrated to yield both "false positives" and erroneously high results for serum from uremic patients. The interference appears to be anionic at physiological pH, and correlates significantly with serum creatine concentration and with the magnitude of the "anion gap." A modification of the analys...

Several operative limitations are involved in the quantitative evaluation of damage processes. To plan an intervention, the assessment of the state of conservation appears incomplete without a realistic estimation. Stone and brick and above all sculptured surfaces and paintings need characterization, quantification, interpretation and rating of the weathering. In this field the use of non destr...

background: there have been very few studies, with contradictory results, on the zinc status of children and adolescents with type-1 diabetes mellitus. the objective of this cross-sectional study was to determine zinc status based on the serum zinc concentration in type-1 diabetic children and adolescents and compare it with that of healthy controls. methods: thirty children and adolescents wit...

The chemical composition and CIELAB color parameters of oil from three aguaje morphotypes ( Mauritia flexuosa L.f.) extracted by supercritical carbon dioxide was investigated. By chromatography (HPLC GC), spectrometry (UV/vis), digital image colorimetry (digital camera), carotenoids, tocopherols, tocotrienols, fatty acids, total polyphenols, space were analyzed. These findings showed that the o...

and Roman Skála , Department of Geological Sciences, Faculty of Sciences, Masaryk university, Kotlářská 2, CZ-61137 Brno, Czech Republic, e-mail: [email protected], Brno University of Technology, Faculty of chemistry, Purkyňova 118, CZ-61200 Brno, Institute of Computer Science, Academy of Sciences of the Czech Republic, Pod Vodárenskou věží 2, CZ-18207 Prague 8, Czech Republic, Institute ...