Search results for "vanA"
showing 10 items of 345 documents
Characterization of Flux-Grown SmxNd1–xVO4 Compounds and High-Pressure Behavior for x = 0.5
2019
The crystal structure and the vibrational and optical characteristics of flux-grown mixed lanthanide vanadate compounds SmxNd1–xVO4 (x = 0, 0.1, 0.25, 0.5, 0.75 and 1) are reported. A linear, monot...
Multicolor upconversion luminescence of GdVO4:Ln3+/Yb3+ (Ln3+ = Ho3+, Er3+, Tm3+, Ho3+/Er3+/Tm3+) nanorods
2016
Lanthanide-doped GdVO4 nanorods that exhibit upconversion emission under 982 nm excitation have been prepared by a facile room-temperature chemical co-precipitation method followed by a subsequent annealing at temperatures of 600 degrees C, 800 degrees C and 1000 degrees C. Multicolor upconversion emission, including white, was achieved by tuning the concentrations of dopant lanthanide ions (Ho3+, Er3+, Tm3+ and Yb3+) in GdVO4. It is found that four GdVO4 samples emit light with the white chromaticity coordinates of (0.326, 0.339), (0.346, 0.343), (0.323, 0327) and (0.342, 0.340) respectively, under a single-wavelength NIR excitation. These coordinates are very close to the standard equal e…
Zīmolu "Dāvanu Serviss" un "Lieliska dāvana" sociālo mediju komunikācijas novērtējums
2022
Bakalaura darba “Zīmolu “Dāvanu Serviss” un “Lieliska dāvana” sociālo mediju komunikācijas novērtējums” mērķis ir noskaidrot, kāda ir minēto zīmolu komunikācija sociālajos medijos un to, kā šo komunikāciju vērtē zīmola esošie un potenciālie klienti jeb auditorija. Darba teorētiskajā daļā skaidrots, kas ir zīmols, tā vizuālā identitāte un personība, kā arī zīmola komunikācija sociālajos medijos. Atsevišķa nodaļa veltīta teorijai par zīmola mārketinga komunikāciju, influenceru mārketinga nozīmi zīmola komunikācijā un sadarbību veidošanu ar influenceriem. Teorijas daļā apskatīta arī patērētāju uzvedība – lojalitāte, uzticēšanās zīmolam un apmierinātība ar to. Darbā izmantotas trīs pētniecības …
A Vanadium(III) Complex with Blue and NIR-II Spin-Flip Luminescence in Solution.
2020
Luminescence from Earth-abundant metal ions in solution at room temperature is a very challenging objective due to the intrinsically weak ligand field splitting of first-row transition metal ions, which leads to efficient nonradiative deactivation via metal-centered states. Only a handful of 3d
Tra uomo e donna. "Varianti sul tema" e invarianti nella scrittura
2018
Vengono individuate diverse riscritture grassiane che appaiono lungo il corso di 15 anni, ma che non si pongono lungo un continuum evolutivo. Non se ne coglie infatti un mutare evidente di usi linguistici o di istanze etico-estetiche che giustifichino i successivi e nuovi testi. Non ci sono, in quindici anni di riscrittura e nonostante i cambiamenti profondi delle sensibilità sociali sul tema del gender, attualizzazioni o integrazioni di segmenti narrativi: la Grasso reitera sempre gli stessi fotogrammi, quasi con le stesse parole e facendo riemergere sempre le stesse sensazioni. La protagonista, Enrichetta/Ninetta, non ha vita autonoma fuori dall’effetto suscitato nell’autrice bambina. Anc…
Impact of Vanadium(IV)-Oxy Acetylacetonate and Vanadium(III) Acetylacetonatel on the DPPC Liposome Membranes: EPR Studies
2017
The effect of vanadium (IV)-oxy acetylacetonate (V4) and vanadium(III) acetylacetonate (V3) on the liposome membranes formed of synthetic lecithin (DPPC) was presented in this paper. Liposomes were formed during the sonication of DPPC lecithin in an aqueous medium. The concentration of the vanadium compounds changed in the range of 0% to 2.4% in molar ratio to the lecithin. The EPR technique made use of three spin probes penetrating the different areas of the membrane (as follows: TEMPO, 16-DOXYL stearic acid methyl ester, stearic acid 5-DOXYL methyl ester). TEMPO probe penetrates the interphase water-lipid (partition parameter F), the probe 16-DOXYL locates in the middle of the lipid bilay…
Kalmbergin kartasto R IV : List 7
1855
p38 MAPK-dependent shaping of the keratin cytoskeleton in cultured cells
2007
Plasticity of the resilient keratin intermediate filament cytoskeleton is an important prerequisite for epithelial tissue homeostasis. Here, the contribution of stress-activated p38 MAPK to keratin network organization was examined in cultured cells. It was observed that phosphorylated p38 colocalized with keratin granules that were rapidly formed in response to orthovanadate. The same p38p recruitment was noted during mitosis, in various stress situations and in cells producing mutant keratins. In all these situations keratin 8 became phosphorylated on S73, a well-known p38 target site. To demonstrate that p38-dependent keratin phosphorylation determines keratin organization, p38 activity …
COOLING-INDUCED CONTRACTION OF TRACHEA ISOLATED FROM NORMAL AND SENSITIZED GUINEA-PIGS
1991
Fast (−7°C/min) cooling of guinea-pig isolated trachea produced a rapidly developing, transient contraction followed by relaxation. Cooling-induced contraction was dependent on temperature (30, 20 or 10°C) and responses in trachea obtained from actively sensitized guinea pigs were significantly greater (20 and 10°-C) than those observed in normal trachea. Cooling to 20°C was selected for subsequent experiments. Pre-treatment with sufficient concentrations of atropine, clemastine, cromoglycate, indomethacin, or nordihydroguaiaretic acid did not depress contraction to cooling in either normal or sensitized trachea. This indicates a direct effect of cooling. The contraction. produced by coolin…
Children’s internet use profiles in relation to behavioral problems in Lithuania, Latvia, and Taiwan
2020
This study explored the profiles of elementary-school-aged children&rsquo