The photostability of tretinoin tocoferil was investigated under irradiation with three kinds of lamps, i.e., a cool white fluorescent lamp, a UV-A fluorescent lamp and a D65 fluorescent lamp. A combination of the cool white fluorescent lamp and the UV-A fluorescent lamp, and the D65 lamp having relative spectral power distribution similar to that of direct daylight, correspond to options 2 and...

This paper addresses the annealing temperature effect on nanostructure and phase transition of copper oxide thin films, deposited by PVD method on glass substrate (at 110 nm thickness) and post annealed at different temperatures (200-400°C) with a flow of 1 cm3s-1 Oxygen. The X-ray diffraction (XRD) was employed for crystallographic and phase analyses, while atomic force m...

Aluminium diffusion in decagonal Al-Ni-Co and Al-Cu-Co quasicrystals is investigated by molecular dynamics simulations. Results obtained with newly developed EAM potentials are compared to previous work with effective pair potentials [Phys. Rev. Lett. 93, 075901 (2004)]. With both types of potential, strong aluminium diffusion is observed above two thirds of the melting temperature, and the gen...

We have investigated the transport properties in the direction perpendicular to the substrate of regioregular polys3-hexyl-thiophened of different molecular weights sMWd in a diode geometry. In these devices, which exhibit space-charge-limited behavior, we find that the mobility values at room temperature increase from 1.33310−5 cm2/V s to 3.30310−4 cm2/V s as the MW is increased from 2.9 to 31...

A plan-view TEM study has been made of the distribution, geometry and the time-dependent annealing behavior of type II (end of range) dislocation loops introduced by 1 x 10’5/cm2 50 keV Si+ implantation into silicon. The size and density distributions of the loops have been quantitatively analyzed, and loop growth behavior has been compared with that predicted by a bulk-diffusion mechanism and ...

Useful lifetime evaluation of chevron rubber spring was very important in design procedure to assure the safety and reliability. It is, therefore, necessary to establish a suitable criterion for the replacement period of chevron rubber spring. In this study, we performed characteristic analysis and useful lifetime prediction of chevron rubber spring. Rubber material coefficient was obtained by ...

The influence of low temperature in the root zone on water uptake in lodgepole pine (Pinus contorta Dougl. ex Loud.) was studied under laboratory conditions. To remove soil hydraulic influences, two-year-old seedlings were transferred to solution cultures and maintained in temperature controlled water baths. Short term measurements of leaf conductance, leaf water potential and tritiated water m...

The effect of temperature on the activity of several diagnostically important enzymes) was measured. At 30° C, the measured activity of some enzymes already differs from that calculated from the Arrhenius plot, while all the enzymes investigated showed a significant deviation of activity at 37° C. This deviation is independent of the time of pre-incubation (up to 1 hour) and the sample concentr...

Stability of tea catechins during heat processing was exarnined. Effects of pH and temperature on reaction kinetics of degradation of tea catechins were investigated. Reaction of -EC was accelerated at pH higher than 6.0, inhibited at those lewer than 5.0. A dominant reaction of --EC in slightly acidic media was isomerization. The apparent first order reaction proceeded in slightly acidic media...