Báo cáo vật lý: "SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF Pb(II) AND Cd(II) USING ARTIFICIAL NEURAL NETWORKS" potx

... reproducibility characters of the method yield relative standard deviation (RSD) of 0.44% and 0.94% for Pb(II) and Cd(II), respectively. The limit of detection of the method for Pb(II) and Cd(II) was calculated ... different concentration of Pb(II) and Cd(II). Figure 2: Absorption spectra for (a) Pb(II)- PAR complex, (b) Cd(II)- PAR complex, and (c)...

Ngày tải lên: 07/08/2014, 14:20

... equation (6) using Microsoft Office Excel and zero-, infinite-temperature viscosity, and the E a , and the R-squared value was estimated. 2.5 Shifting Experimental Data of Viscosity and Temperature ... that the viscosity of soy and sunflower is respectively the least and the most sensitive to the influence of temperature. This observation is not in consistent to the t...

Ngày tải lên: 07/08/2014, 14:20

... M of KCl (A) or FeCl 3 (B) solutions. The electrode B showed better Nernstian slope, –58.1 mV/dec and limit of detection, 2.511 x 10 –6 M of Cl – compared to electrode A, –51.9 mV/dec and ... Pablos, F. & Gonzalez, A.G. (2003). Ion chromatographic determination of some organic acids, chloride and phosphate in coffee and tea. Talanta, 61, 95–101. 9. Abu Hasan, Z....

Ngày tải lên: 07/08/2014, 14:20

... is defined as in Theorem 2.2. Proof. It follows from the assumptions that ϕ0, 00, and so f00. The rest of the proof is similar to the proof of Theorem 2.2 and we omit the details. Corollary ... Article Stability of Homomorphisms and Generalized Derivations on Banach Algebras Abbas Najati 1 and Choonkil Park 2 1 Department of Mathematics, Faculty of Sciences, University...

Ngày tải lên: 22/06/2014, 02:20

... 1993, M.S. degree from University of Science and Technology of China, in 1997, and Ph.D. degree from De- partment of Electrical and Computer En- gineering, University of Missouri-Columbia in 2005. ... image/video transmission, and wireless sensor network. He is a member of Sigma Xi and IEEE, and was named one of the three finalists for 2003 Association for the Advanceme...

Ngày tải lên: 22/06/2014, 23:20

... Bi and U are lower in the pulps of carious teeth than in those of healthy teeth, and the mean concentrations of Mg, Cd, Ba and Pb were higher in the pulps of carious teeth than in those of ... inhabitants of this city drink underground water, and 99% of the population cooks their meals using metallic utensils of poor quality. As such, the content of trace eleme...

Ngày tải lên: 07/08/2014, 14:20

... as catalysts and catalytic supports. 8 Because of the variety of practical uses, the fabrication of the desired morphologies of mesoporous silica is as important as the control of its internal ... many aspects of the synthesis processes are involved in developing these porous materials, and they still require greater insight and understanding. A basic understanding...

Ngày tải lên: 07/08/2014, 14:20

... oxidising power of free radicals. Production of these radicals is achieved using either single oxidants or combinations of ozone, H 2 O 2 and UV radiation 13 and a combination of H 2 O 2 with ... of the best catalysts in catalytic oxidation of dyeing and printing wastewater, Cu is chosen to be loaded onto the porous support. This study investigates the effect of HN...

Ngày tải lên: 07/08/2014, 14:20

... (Switzerland). The surface modification of OMMT using a silane coupling agent was carried out as follows: a 205.8g ethanol solution (95% ethanol and 5% water) was stirred before 10.8 ml of silane ... strength of the E/GF composites with the addition of silane- treated OMMT. According to Lin et al., 5 the clays were dispersed between both the bundles of GF and within the in...

Ngày tải lên: 07/08/2014, 14:20

... life and wear mechanism of uncoated and coated milling inserts. Wear, 225(1), 273– 284. 25. Kopac, J. (1998). Influence of cutting material and coating on tool quality and tool life. J. Mater. ... (2006). Wear and tool life of tungsten carbide, PCBN and PCD cutting tools. Int. J. Mach. Tools Manuf., 46(5), 482–491. 24. Gu, L., Barber, G., Tung, S. & Gu, R. J. (199...

Ngày tải lên: 07/08/2014, 14:20