in this work the performance of a wavelength division multiple access (wdma) system with direct detection receiver is investigated. for this purpose, the probability of error in a wdma network with ook modulation considering crosstalk, isi, photo detector noise and thermal noise is calculated and the effect of each on system performance is investigated. the system performance in presence of pin...

The problems of photo aesthetic and photo quality are similar, but not exactly the same. In photo aesthetic assessment, we seek photos that looks beautiful to people. The aesthetic score of a photo can be affected by the photo’s color tone, composition, layout, and etc. In photo quality assessment, we seek photos that are in high quality. The quality score of a photo can be affected by shake, b...

Post synthetically-modified UiO-66-NH 2 with a molecular cobaloxime [Co(DMG) Cl ] (DMG = dimethylglyoxime) catalyst displays excellent photo-(404 μmol g −1 h ) and electrocatalytic H evolution activity in an aqueous solution.

gender usually plays a significant role in the works of photographers andcauses men and women to take different photographs. nowadays, photographsand photography have a crucial and pivotal status in societies. the majority of theevents and accidents unfolding in various parts of the world are communicatedto the people via newspapers, magazines, internet and television, and undoubtedly,photograp...

The photo-active Ni16As4P4@NU-1000 composite was constructed using a size-matching impregnation strategy, which shows robust long-term photocatalytic activity towards hydrogen evolution with TON of 28 600 after 120-hour Xe-lamp irradiation.

Bare titania and metal-promoted TiO2 catalysts were employed in the treatment of nitrates, which are ubiquitous pollutants wastewater. The results show that process can be carried out under visible light (from a white LED lamp) and, best case, 23.5% conversion nitrate was obtained over 4 h with full selectivity towards N2 by employing 0.1 mol% Ag/TiO2 prepared flame spray pyrolysis. Moreover, p...

Advanced oxidation processes (AOPs) have been postulated as viable, innovative, and efficient technologies for the removal of pollutants from water bodies. Among AOPs, photo-Fenton shown to be effective degradation various types organic compounds in industrial wastewater. Monometallic iron catalysts are limited practical applications due their low catalytic activity, poor stability, recyclabili...

In vitro tensile bond strengths of Photo Clearfil Bright (PB) and Clearfil Photo Posterior (CP) with Clearfil Photo Bond to human enamel and dentin were determined by a truncated cone bond test. Parameters tested were: four substrates (etched enamel; unetched dentin, D1; dentin conditioned with 10% polyacrylic acid, D2; and dentin etched with phosphoric acid, D3); two techniques (bonding agent ...