نتایج جستجو برای: urbach energy
تعداد نتایج: 666542 فیلتر نتایج به سال:
The case of a 37-year-old woman with lipoid proteinosis is presented. The first symptoms of hoarseness of voice occurred in puberty. Additional symptoms included beaded eyelid papules, macroglossia with yellowish papules, yellowish deposits of soft palate, popular eruption in the axillary area and tuberous nodules on the elbows.
Amorphous silicon thin films, fabricated by thermal conversion of neopentasilane, were used to passivate crystalline silicon surfaces. The conversion is investigated using X-ray and constant-final-state-yield photoelectron spectroscopy, and minority charge carrier lifetime spectroscopy. Liquid processed amorphous silicon exhibits high Urbach energies from 90 to 120 meV and 200 meV lower optical...
1. Calzavara-Pinton P, Ortel B, Carlino A, Honigsmann H, De Panfilis G. A reappraisal of the use of 5-methoxypsoralen in the therapy of psoriasis. Exp Dermatol 1992;1:46-51. 2. Honigsmann H, Szeimies RM, Knobler R. Photochemotherapy and photodynamic therapy. In: Wolff K, Goldsmith LA, Katz SI, Gilchrist AS, Leffell DJ, editors. Fitzpatricks dermatology in genereal medicine. 7th ed. New York: M...
In 2005, DeLong, Urbach, and Kutas took advantage of the a/an English indefinite article phonological alternation and the sensitivities of the N400 ERP component to show that readers can neurally preactivate individual words of a sentence (including nouns and their prenominal indefinite articles) in a graded fashion with a likelihood estimated from the words' offline probabilities as sentence c...
Exponential band edges have been observed in a variety of materials, both crystalline and amorphous. In this Letter, we infer the structural origins of these tails in amorphous and defective crystalline Si by direct calculation with current ab initio methods. We find that exponential tails appear in relaxed models of diamond silicon with suitable extended defects that emerge from relaxing point...
Cadmium oxide thin films were fabricated on glass substrates by a simplified and low cost spray pyrolysis technique at different substrate temperatures. The X-ray diffraction study showed that irrespective of substrate temperature all the films exhibits a preferential orientation along the (1 1 1) plane. The values of crystallite size were found to be in the range 20.72 – 29.6 nm. The perce...
The status of Bayesianism has considerably evolved since the beginning 1990s, when Howson and Urbach published Scientific Reasoning: Bayesian Approach (1989). At time, was a philosophical theory scientific reasoning rival to falsificationism. While it claimed account for important aspects in empirical science solve difficulties such as Duhem’s Problem or Hempel’s Raven Paradox, it hardly used b...
Appropriate glass systems can provide efficient transparent radiation shielding. The current study involved the preparation of system with a composition xEu2O3-(15-x)ZnO-10CaO-35PbO-40P2O5 (where x = 0, 1, 2, 3, and 4 wt.% Eu2O3). formation phase was confirmed using X-ray diffraction (XRD). analyzed physical structural parameters, such as optical conductivity (σopt), refractive index (n), band ...
Characterization, Optical and Conductivity Study of Nickel Oxide Based Nanocomposites of Polystyrene
Different concentrations of nickel oxide (NiO) nanoparticles were successfully inserted into polystyrene (PS) polymer matrix using the solution casting method. X-ray diffraction (XRD), Fourier transform infrared (FT-IR), High-resolution scanning electron microscope (HRSEM), and UV–Vis techniques are used to characterize nanocomposites. XRD, HRSEM, FT-IR results indicate that PS NiO have a good ...
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