1,584 research outputs found
On the amperometric detection and electrocatalytic analysis of ascorbic acid and dopamine using a poly(acriflavine)-modified electrode
No full textCrystal structure and magnetic properties of a one-dimensional polymer [Mn(im2-py)(tp)(HO)]·1.25HO
No full textA new manganese(II) complex [Mn(im2-py)(tp)(HO)]·1.25HO (im2-py = 2-(2′-pyridyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl and tp = terephthalato dianion) has been synthesized and characterized structurally and magnetically. The crystal structure consists of neutral chains of manganese(II) ions linked by the terephthalate ligand. Variable temperature magnetic susceptibility data exhibit a weak antiferromagnetic coupling between the manganese(II) ion and the imino nitroxide radical
Crystal structure and magnetic properties of a one-dimensional polymer [Mn(im2-py)(tp)(HO)]·1.25HO
No full textA new manganese(II) complex [Mn(im2-py)(tp)(HO)]·1.25HO (im2-py = 2-(2′-pyridyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl and tp = terephthalato dianion) has been synthesized and characterized structurally and magnetically. The crystal structure consists of neutral chains of manganese(II) ions linked by the terephthalate ligand. Variable temperature magnetic susceptibility data exhibit a weak antiferromagnetic coupling between the manganese(II) ion and the imino nitroxide radical
Fabricating an Amperometric Cholesterol Biosensor by a Covalent Linkage between Poly(3-thiopheneacetic acid) and Cholesterol Oxidase
No full textIn this study, use of the covalent enzyme immobilization method was proposed to attach cholesterol oxidase (ChO) on a conducting polymer, poly(3-thiopheneacetic acid), [poly(3-TPAA)]. Three red-orange poly(3-TPAA) films, named electrodes A, B and C, were electropolymerized on a platinum electrode by applying a constant current of 1.5 mA, for 5, 20 and 100 s, respectively. Further, 1-ethyl-3-(3-dimethylamiopropyl)carbodiimide hydrochloride (EDC‧HCl) and N-hydroxysuccinimide (NHS) were used to activate the free carboxylic groups of the conducting polymer. Afterwards, the amino groups of the cholesterol oxidase were linked on the activated groups to form peptide bonds. The best sensitivity obtained for electrode B is 4.49 mA M-1 cm-2,with a linear concentration ranging from 0 to 8 mM, which is suitable for the analysis of cholesterol in humans. The response time (t95) is between 70 and 90 s and the limit of detection is 0.42 mM, based on the signal to noise ratio equal to 3. The interference of species such as ascorbic acid and uric acid increased to 5.2 and 10.3% of the original current response, respectively, based on the current response of cholesterol (100%). With respect to the long-term stability, the sensing response retains 88% of the original current after 13 days
A new stable Fe(CN)(6)(3-/4-)-immobilized poly(butyl viologen)-modified electrode for dopamine determination
No full textEnhancing dopamine detection using a glassy carbon electrode modified with MWCNTs, quercetin, and Nafion (R)
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Inhibition of the ERK phosphorylation plays a role in terbinafine-induced p21 up-regulation and DNA synthesis inhibition in human vascular endothelial cells.
No full textAMČR - dokument C-PY-900000224
No full textStav: 3Označení: Voltus.tifPopis: Voltuš - ohrazení 1 - Třemšín.Poznámka: Plán lokality podle Čtverák, V. a kol. 2003 (Encyklopedie hradišť v Čechách. Praha: Libri), původně Drudík, T. Rok vzniku stanoven podle publikace. Autorem zcela původního plánku je J. Kerber, rožmitálský lékař, který ho vytvořil kolem poloviny 19. století. Kerberův plán první publikoval J. P. Hille v roce 1913 ve své knize "Třemšín. Náčtrtek historicky-místopisný" a další autoři (včetně T. Durdíka a J. Čížka) ho následně převzali a upravili
Highly porous PProDOT-Et-2 film as counter electrode for plastic dye-sensitized solar cells
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