Films consisting of amorphous carbon dispersed in tetragonal nanocrystalline zirconia were characterized for their optical properties by reflectance measurements. The optical constants of each component of the composite have been extracted; the experimental reflectance spectra have been fitted to Maxwell-Garnett effective medium theory, leading to the effective dielectric constants of the film....

Hausser, M. (2005). Determinants of action potential propagation in cerebellar Purkinje cell axons. J. Neurosci. 25, 464–472. 16. Borst, J.G., and Sakmann, B. (1999). Effect of changes in action potential shape on calcium currents and transmitter release in a calyx-type synapse of the rat auditory brainstem. Philos. Trans. R. Soc. Lond. B 354, 347–355. 17. Nicholls, J., and Wallace, B.G. (1978)...

TiO2 thin film based, chemiresistive sensors for NO2 gas which operate at room temperature under ultraviolet (UV) illumination have been demonstrated in this work. The rf-sputter deposited and post-annealed TiO2 thin films have been characterized by atomic force microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction to obtain surface morphology, chemical state, and crystal structur...

We report on the optical properties and local bonding configurations of both as-deposited and postannealed hydrogenated amorphous silicon nitride a-SiNx :H thin films grown on crystalline Si substrates with x approximately 1.2±0.1. Ultraviolet optical reflection and infrared IR absorption measurements were applied to characterize the films. A method simply based on optical reflection spectra is...

Processes of e-beam and holographic recording of surface relief structures using Ge5As37S58-Se multilayer nanostructures as registering media were studied in this paper. Optical properties of Ge5As37S58, Se layers, and Ge5As37S58-Se multilayer nanostructures were investigated. Spectral dependencies of refractive index were analyzed within the frames of single oscillator model. Values of optical...

cauliflower-like nanostructure of cadmium oxide was synthesized by utilizing mechanochemical reaction followed calcination procedure for the first time. the design of experiment (doe) by taguchi method was used to study influence of the chosen factors and to consider optimum conditions of the experiments. the temperature of calcining, the duration of milling, the duration of calcining and react...

TiO2 nanoparticles (NPs) were produced via utilized nanosecond laser ablation of titanium in water. The description these NPs was employed utilizing XRD, SEM, and UV-VIS. Then, optoelectronic properties investigated a drop-casting on the Si wafer substrate. XRD results show formation anatase TiO2. SEM exhibits spherical shape with sizing changing from 5 nm to 50 nm. bandgap 3.6 eV which determi...

The physiology of osphradium (the pallial organ situated near the branchiae in most mollusca with the exception of the higher cephalopoda) is poorly known. Since the work of Copeland (1918) on Busy con canaliculatvm, it has been generally accepted that the osphradium serves a chemoreceptive function. This conception has been shared by Henschel (1932), Brock (1936), Brown & Noble (1960) Michelso...

Copper-doped hematite thin films were prepared by spray pyrolysis technique using a mixture of ethanol and distilled water precursors. Visual observations showed that aqua precursor produced less integrity compared with thin, uniform transparent yellowish-brown adhered well to the substrate. Composition thickness measurements determined RBS revealed thinner 94.45 51.77 nm while 1,370 1,120 for ...

سابقه و هدف: ورود گونه­­ های ماهی مهاجم دراکوسیستم ­های آبی، سبب بروز انواع اثرات منفی اکولوژیکی اقتصادی-اجتماعی می ­­شود. اولین گام در تجزیه تحلیل مخاطرات ناشی از گونه­ غیر­بومی، شناسایی خطر است بر این اساس ابزارهای متعددی برای ارزیابی خطرات تهاجمی غیربومی به منظور پشتیبانی تصمیم گیرندگان گونه ­­ها ایجاد شده است. هدف پژوهش قدرت تیلاپیای شکم قرمز (Coptodon zillii) حوضه آبریز تالاب شادگان (حوضه‌...