Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Ali H. Al-Hamdani"'
Publikováno v:
Baghdad Science Journal, Vol 20, Iss 3(Suppl.) (2023)
This article studied some linear and nonlinear optical characteristics of different pH solutions from anthocyanin dye extract at 180 oC from red cabbage. First, the linear spectral characteristics, including absorption and transmittance in the range
Externí odkaz:
https://doaj.org/article/01fa06d7e77e4c3a9ea3e0540e832fd8
Autor:
Ali H. Al-Hamdani
Publikováno v:
Iraqi Journal of Physics, Vol 12, Iss 23 (2019)
In the present work, poly methyl methacrylate (PMMA) doped with Rhodamine 6G was prepared. The spectral properties (absorption and fluorescence) of the films were studied at different concentrations (1x10-5, 2x10-5, 5x10-5, 7x10-5, and 1x10-4mol/l).
Externí odkaz:
https://doaj.org/article/f3f04d42c94549788605291b04038d9e
Publikováno v:
Engineering and Technology Journal, Vol 33, Iss 1A, Pp 273-284 (2015)
In this research, the spectral characteristics and the nonlinear optical properties for the mixing of Rhodamine dyes (Rh6G, RC, and RB) were determined at different concentrations ( 1×10-5,2×10-5,5×10-5,7×10-5, and 1×10-4 mole/L) at room tempera
Externí odkaz:
https://doaj.org/article/53dea147603a4b1fa979e252763db052
Publikováno v:
Engineering and Technology Journal, Vol 31, Iss 16, Pp 3067-3077 (2013)
Water pumping from wells and rivers for irrigation is a well established procedure on many farms in Iraq and is practical on various levels around the world. Typical irrigation systems consume a great amount of conventional energy through the use of
Externí odkaz:
https://doaj.org/article/f21d1a711a6d430dbe73e3fbc0aefd54
Autor:
Ali H. Al-Hamdani
Publikováno v:
Engineering and Technology Journal, Vol 30, Iss 5, Pp 849-854 (2012)
Anodic electrochemical etching enhanced by ultrasonically is developed to fabricate luminescent porous silicon (PS) material. The samples prepared by the new etching method exhibit superior characteristics to those prepared by conventional direct cur
Externí odkaz:
https://doaj.org/article/546aaf2b18684dae8adaf0a91bdcc11e
Publikováno v:
Engineering and Technology Journal, Vol 28, Iss 14, Pp 4806-4815 (2010)
Amathematical procedure for optimization depends on the evolutionaryalgorithm has been proposed to estimate the optimum design of single mode optical fiber upon finding the core and cladding material and core radius. The results of the optimum design
Externí odkaz:
https://doaj.org/article/cf32c6b1773a4cafb3a3b3816925e963
Publikováno v:
Engineering and Technology Journal, Vol 28, Iss 11, Pp 2143-2150 (2010)
Porous silicon was fabricated at p-n junction wafer byphotoelectrochemical (PEC) etching. Silicon wafer with various electrolytecontaining different HF concentrations was used to explain PS formation by thereaction at the Si/ electrolyte interface. A
Externí odkaz:
https://doaj.org/article/0267d0ffa39e482bad6b122985e8545d
Publikováno v:
Engineering and Technology Journal, Vol 27, Iss 15, Pp 2844-2852 (2009)
Electrochemical and photoelectrochemical etching technique have beenemployed to produce nanostructured solar cell. Various preparation conditions were examined. The I-V characteristics measurements were adopted to study effects of these parameters on
Externí odkaz:
https://doaj.org/article/ad2c19b252f7496a9f6724b36d8bb113
Publikováno v:
Engineering and Technology Journal, Vol 27, Iss 9, Pp 1872-1879 (2009)
The coupling tolerances is considered as an important parameters for the opticaldesigner and it can not be ignored. Since the coupling efficiency is affected by thedisplacement of the optical components during the thermal expansion and theassembling
Externí odkaz:
https://doaj.org/article/a7ac85e4ebca42c7bfa8c6ea6fdf5124
Publikováno v:
Experimental and Theoretical NANOTECHNOLOGY. :1-7
In this paper the linear and nonlinear optical (NL) properties of ZnO-TiO2-PMMA nanohybrids films prepared via solution casting method were investigated. The effect of film thickness on the linear optical properties has been studied using UV-Vis spec