Báo cáo vật lý: "Conductive Polymer Based on Polyaniline-Eggshell Powder (PANI-ESP) Composites" ppsx

... 3.5 Electrical Conductivity The polymer backbone in the PANI-ESP conducting polymers consists of a π-conjugated chain. The overlap of π-electrons is called conjugation because it leads ... the conductive polymer based on PANI was concluded to possess a FCC structure. The powders exhibited peaks at 2 angles, around 200 and 450, which indicates that the conductive polymer co...

Ngày tải lên: 07/08/2014, 14:20

... study consists of 60 × 12 monthly solar radiation values collected from the National Office of Meteorology (NOM) in Algeria. Each site contains 12-values corresponding to monthly radiation data. ... photovoltaic stations. IEEE Transactions on Energy Conversion, 13(4), 373–378. 22. Sidrach-de-Cardona, M. & Mora López, L. (1998). A simple model for sizing stand alone photovoltaic sys...

Ngày tải lên: 07/08/2014, 14:20

... 1. INTRODUCTION The Phyllanthus genus contains species which have useful medicinal applications. A considerable number of these species have been examined and some effective constituents ... out on silica gels 230–400 mesh. Spots and bands of compounds on TLC were detected using UV light. V spectra were recorded on a UV-1650PC spectrophotometer. Proton NMR (400 MHz) and car...

Ngày tải lên: 07/08/2014, 14:20

... scales strongly depends on temperature, pH, the rate of CO 2 release as well as the concentrations of carbonates ions. 4 Several works have been reported 5–6 on the studies of deposits on the ... corrosion rate other than time exposure and ionic salts. The carbonate salt have a deleterious effect on the scales and rapid decomposition of the alloy is noted. 7 4. CONCLUSION...

Ngày tải lên: 07/08/2014, 14:20

... INTRODUCTION III-V nitride semiconductors offer a wide range of applications due to their wide direct band gap, which is not found in conventional semiconductors. The current semiconductor ... properties. However, a long nitridation times must be avoided because it leads to formation of AlN on the surface, which degrades the properties of the epilayer [6]. 2.2. Silicon Carbide (SiC)...

Ngày tải lên: 07/08/2014, 14:20

... 1500.0 1000.0 500.0 will mention as the optimum condition. Increasing of BP concentration up to 20% in masterbatches mixture can extent the interaction among BP, AA and PP. These mean that ... arise the radical reaction among PP, AA and BP cellulose conducting either primary or secondary binding to form rPP/AA/BP bio-composite. The presence of BP in optimum condition would improve mat...

Ngày tải lên: 07/08/2014, 14:20

... polyethylene oxide (PEO) coronas. 20 The formation of hexagonal mesophase under highly acidic conditions occurred through S + H + X – I + formation. 21 The protonated silanol groups (Si – O + ) ... L. (2003). Chemistry of silica at different concentrations of non-ionic surfactant solutions: Effect of pH of the synthesis gel on the preparation of mesoporous silica. Microporous Mesop...

Ngày tải lên: 07/08/2014, 14:20

... formation of the monoclinic zirconia phase. It was found that zirconia dispersion contributed to the enhanced NO x adsorption . Keywords: clay pillarisation, zirconia, dispersion, adsorption ... (ZrO 2 /Al 2 O 3 )-pillared saponite was prepared by the impregnation method using zirconium oxide chloride solution as a precursor. The effect of zirconia concentration on the physicochemi...

Ngày tải lên: 07/08/2014, 14:20

... Radiography, City University, London EC1M 6PA, England *Corresponding author: sabar@usm.my Abstract: Hydrophilic copolymers which consist of a combination of hydrophobic monomers (methyl methacrylate, ... Photon cross-sections on a personal computer. Washington D.C.: US Department of Commerce, NBSIR 87-3597, Jul. 1987, 1–10. 6. Constantinou, C. (1982). Phantom materials for radiati...

Ngày tải lên: 07/08/2014, 14:20

... technique commonly employed to probe thermal properties of starch based on the heat flow changes associated with both first-order (melting) and second-order (glass transition) transitions of polymeric ... 334–343. 16. Tufvesson, F. & Eliasson, A-C. (2000). Formation and crystallization of amylose-monoglyceride complex in a starch matrix. Carbohydr. Polym., 43, 359–365. 17. Tufv...

Ngày tải lên: 07/08/2014, 14:20