Báo cáo vật lý: "Electrical Conductivity of Chlorophyll with Polythiophene Thin Film on Indium Tin Oxide as P-N Heterojunction Solar Cell" ppsx

... layered on Indium Tin Oxide (ITO) substrate as p-n heterojunction solar cell. PT thin film is deposited to the ITO substrate by using electrochemistry method. CHLO thin film is coated on PT thin film ... CHLO, kekonduksian elektrik dalam gelap Electrical Conductivity of Chlorophyll 86 showed that electrical conductivity of the PT thin films increase with the increasing of the CHLO thin film thickness ... *Corresponding author: hasiah@umt.edu.my Abstract: This work was focused on the study of electrical conductivity to the combination of Polythiophene (PT) thin film and Chlorophyll (CHLO) thin film...

Báo cáo vật lý: "Electrochemical Studies of Mild Steel Corrosion Inhibition in Aqueous Solution by Uncaria gambir Extract" doc

... Studies of Mild Steel Corrosion Inhibition 6  Figure 1: The relation between percentage of inhibition with concentration of ethyl acetate extract of U. gambir. Conc. (ppm) Inhibition ... the rest of the concentrations. This means that the protective film of a stable oxide of magnetite was formed on the mild steel. Magnetite will strongly adhere to the metal and consequently ... study was done to evaluate the inhibitive effect of ethyl acetate extract of U. gambir as a green corrosion inhibitor of mild steel in aqueous solution. The assessment of the corrosion behaviour...

Báo cáo vật lý: "A Perspective of Oil Palm and Its Wastes" doc

... include conversion losses or consumption of fossil fuel in the transportation of the EFB waste. Research on fast pyrolysis of biomass to derive bio-oil has received very limited attention by ... production of 15 million tonnes, the energy value of the EFB waste is therefore around 3 million tonnes of oil equivalent, which would amount to $1.2 billion for an assumed $400 per tonne ($55 ... 0.3–0.4 kg of waste. As the boiler efficiency is only around 70%, the actual consumption is correspondingly higher.25 Little effort was made in the past to optimise process steam consumption or...

Báo cáo vật lý: " WEAR MECHANISM OF TiN, TiAlN AND TiCN COATED DRILLS DURING DRILLING OF CARBON STEEL" pptx

... abrasion and no peeling mechanism occurred on the rake and flute surfaces of the drill. Adhesion is a process of deformation, rupture of interfacial bonding and formation of transfer layer on ... mixture of abrasion, severe adhesion and thermal wear mechanism at the end of drill life. It was also observed that the severity of wear mechanism increases with increasing number of drilling ... process was found to be a complex mixture of abrasion, adhesion and thermal wear. Wear mechanism interacted with one another, but only one mechanism will dominate. In the early stage of drilling,...

Báo cáo vật lý: "MORPHOLOGY STUDIES OF POROUS GaP, SYNTHESIZED BY LASER-INDUCED ETCHING" pdf

... denoted as the (111) direction, similar to that in GaAs.30 The chemical reaction of the hole with phosphorous was stronger than with gallium due to high reactivity of phosphorous. At the onset of ... structure along the (111) directions with pore dimension of 50 to 80 nm. It appeared that the high laser power density along with long irradiation time led to dissolution of already formed structure ... consists of a CW argon-ion laser, reflecting mirror, focusing lens and plastic container, as shown in Figure 1. The laser beam (514.5 nm) was reflected by an aluminium coated highly reflecting...

Báo cáo vật lý: "TEMPERATURE DEPENDENCE OF RAMAN SPECTRA OF POROUS GAP" docx

... characteristic dimensions were determined with phonon confinement model. The laser was also used for spectroscopic investigations. It was found that the surface phonon frequency depends on the nanocrystalline ... anharmonic constants were found to be highly size dependent and increased with decreasing dimensions. The phonon lifetimes decreased with increasing temperatures independent, but both decreasing with ... that the phonon lifetime decrease with increasing temperature. The exact determination of the positions and line-width of these microscopic gap modes open a new field of application in studying...

Báo cáo vật lý: "ULTRASONIC STUDY OF THE SELF–ASSOCIATION OF ANILINE IN ETHANOL-CYCLOHEXANE MIXTURES" pptx

... is found to decrease with the increasing mole fraction of aniline whereas the πi increased. These variations may be attributed to two reasons: (i) enormous number of component molecules is ... interactions between the components of the mixtures. Ultrasonic and sonochemical reaction studies have been carried out by measuring ultrasonic velocities in the mixing of phenols such as cresol ... that of cyclohexane and the fixed component ethanol, and hence, an increasing trend appeared with increasing mole fraction of aniline. The increasing trend of η revealed that the addition of...

Báo cáo vật lý: "AN OVERVIEW OF BIASED ESTIMATOR" pptx

... presented in Section 3. Some hybrids of the biased estimators are presented in Section 4. A comparison of the biased estimators is presented in Section 5. 2. THE RATIONALE FOR USING BIASED ESTIMATORS ... (continue on next page) An Overview of Biased Estimators 106 22. Sarkar, N. (1992). A new estimator combining the ridge regression and the restricted least squares methods of estimation. ... properties of principal component regression. Journal of the American Statistical Association, 70, 194–197. 7. Stein, C.M. (1960). Multiple regression. In I. Ikin (Ed.). Contributions to probability...

Báo cáo vật lý: "Mixing Behavior of Binary Polymer Particles in Bubbling Fluidized Bed" doc

... respectively, the number of particles of A or B per unit mass of component A or B, respectively is given by Equation (4). B⎤⎥⎦ Mass of particles in Number of particles Mass of one= each size ... feature of the fluidized bed mixer is the ability of conducting several procedures like mixing, reaction, coating, drying etc., is single vessel. On the other hand, based on the energy consumption ... particles in a given mass of sample depends on the size distribution of the components. Thus, for a binary mixture of spherical particles of components A and B with proportions of PA and PB, respectively,...

Báo cáo vật lý: "Phase Transformation of Rust in the Presence of Various Tannins" pot

... adsorption of the tannins to the rusty surface, (ii) complexation of ferrous/ferric ions or complexation of surface iron Phase Transformation of Rust 38 Figure 6: XRD patterns of a ... fasa, penukar karat, lepidokrosit, magnetit Phase Transformation of Rust 32 1. INTRODUCTION The atmospheric corrosion of steel structures often results in the formation of iron ... non-reactive protecting oxides. Protection properties result from the reactions of polyphenolic parts of the tannin molecule with ferric ions thereby forming a highly cross-linked network of...

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