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) mixture of Pb(II) and Cd(II) ... using artificial neural network. Sensors and Actuators B, 38–39, 365–370. Journal of Physical Science, Vol. 18(1), 1–10, 2007 1 SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF Pb(II) AND Cd(II)...

... equation (6) using Microsoft Office Excel and zero-, infinite-temperature viscosity, and the Ea, 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 trend of oTT value ... The Hidden Property of Arrhenius-type Relationship: Viscosity as a Function of Temperature Sunny Goh Eng Giap Department of Engineering Science, Faculty of Science and Technology, Universiti...

Báo cáo vật lý: "The Potentiometric Analysis of Chloride Ion Using Modified Heterogeneous Chitosan Membranes" pdf

... M of KCl (A) or FeCl3 (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., Ngah, W.S.W. ... surface | Cl– solution | Figure 2: Illustration of ion-exchange mechanism at the surface of membrane. The mobility to and exchange of Cl– ion at cationic sites in the chitosan skeletons...

Báo cáo hóa học: " Research Article Stability of Homomorphisms and Generalized Derivations on Banach Algebras" potx

... 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 proofis similar to the proof of Theorem 2.2 and we omit the details.Corollary ... ArticleStability of Homomorphisms and GeneralizedDerivations on Banach AlgebrasAbbas Najati1 and Choonkil Park21Department of Mathematics, Faculty of Sciences, University of Mohaghegh Ardabili,Ardabil ... Proceedings of the National Academy of Sciences of the United States of America, vol. 27, pp. 222–224, 1941.3 T. Aoki, “On the stability of the linear transformation in Banach spaces,” Journal of the...

Báo cáo hóa học: " Research Article Collaborative Image Coding and Transmission over Wireless Sensor Networks" potx

... 1993, M.S. degree fromUniversity of Science and Technology of China, in 1997, and Ph.D. degree from De-partment of Electrical and Computer En-gineering, University of Missouri-Columbiain 2005. ... image/video transmission, and wireless sensor network.He is a member of Sigma Xi and IEEE, and was named one of thethree ﬁnalists for 2003 Association for the Advancement of MedicalInstrumentation ... degreefrom University of Science and Technology of China in 1983, M.S.E.E. degree from Uni-versity of Southern California, Los Angeles,in 1986, and Ph.D. degree from University of Illinois at Urbana-Champaign,...

Báo cáo vật lý: "Analysis of Trace Elements in Teeth by ICP-MS: Implications for Caries" pptx

... 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 elements in the environment and ... concentrations of Na, Mg, Al, Fe, Ni, Cu, Sr, Cd, Ba, Pb and U and significantly lower concentrations of Mn, Co, As, Se, Mo and Bi. In addition, a comparison of the concentrations of trace elements...

Báo cáo vật lý: "Influence of the Silica-to-Surfactant Ratio and the pH of Synthesis on the Characteristics of Mesoporous SBA-15" ppt

... 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 of the synthesis ... with increasing amounts of HCl or the presence of large amounts of C1– ions. Therefore, for the partial dehydration of PEO units, the volume of the hydrophilic part of the micelle decreases....

Báo cáo vật lý: "Decolourisation of Reactive Orange 16 by Activated Carbon and Copper Oxide Catalysts Supported by Activated Carbon" ppsx

... oxidising power of free radicals. Production of these radicals is achieved using either single oxidants or combinations of ozone, H2O2 and UV radiation13 and a combination of H2O2 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 HNO3-modified AC and ... that of AC modified using 4 M and 8 M HNO3, which are 23% and 22%, respectively. The Cu-AC, prepared by impregnating the 4 M HNO3-modified AC with copper nitrate solution for a 5 wt% of Cu...

Báo cáo vật lý: "Flexural and Morphological Properties of Epoxy/Glass Fibre/SilaneTreated Organo-montmorillonite Composites Nor Hamidah Mohd" potx

... (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 interstices of the ... (Switzerland). The GF was in the form of a chopped strand mat (CSM). The OMMT (Nanomer 1.30E) was supplied by Nanocor, USA. The 3-aminopropyltrimethoxysilane with a molecular weight of 179.29...

Báo cáo vật lý: "Performance of Carbide Cutting Tool when Machining Cast Iron FC 250 in Dry Condition and Using Cutting Fluid" ppt

... 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. (1999). Tool life and wear ... Khrais, S. K. (2007). Wear mechanisms and tool performance of TiAlN PVD coated inserts during machining of AISI 4140 steel. Wear, 262(1–2), 64–69. Journal of Physical Science, Vol. 21(2), 67–79,...

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