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

... EA Electrochemical Studies of Mild Steel Corrosion Inhibition 8 Table 4: Corrosion parameters for mild steel in aqueous solution with absence and presence of various pH of 150 ppm ethyl acetate extracts of ... Electrochemical Studies of Mild Steel Corrosion Inhibition 6   Figure 1: The relation between percentage of inhibition with concent...

Ngày tải lên: 07/08/2014, 14:20

... Further increase in the irradiation time to 15 min. led to the pore propagating deep into the substrate and the pore walls becoming extremely thin, in the range of 10 to 50 nm as can be seen in ... was increasing up to 6 W/cm 2 at small etching time of 5 min, the etched surface onset of pore structure with small pits were irregular in shape and size, shown in Figure 4(a)....

Ngày tải lên: 07/08/2014, 14:20

... of cooking palm oil. Increasing agitation speed will increase the specific interfacial area between the oil and the enzyme present in the aqueous phase, by reducing the droplet size. Since the ... hydrolysis reaction takes place at the interface, the increase in the interfacial area resulted in an increase in the initial rate of hydrolysis. 3 The conversion increased when...

Ngày tải lên: 07/08/2014, 14:20

... only a few sources of energy and to include in its policy good energy management in relation to energy utilisation. Meeting the increasing demand for energy is indeed a continuing concern compounded ... with oil palm increased by 2.8% to 4.17 million hectares in 2006. The area expansion occurred mainly in Sabah and Sarawak, with a combined growth of 4.5% compared to 1.6% i...

Ngày tải lên: 07/08/2014, 14:20

... were dried using blotting paper and wrapped in cling film before placing them in the XRF beam. Both the K α and K β peaks of the XRF photons were utilized. The intensities of the incident and ... intensity of the incident beam. The density of the samples was determined by weighing and measuring the volume of the samples. Subsequently the mass attenuation coefficients...

Ngày tải lên: 07/08/2014, 14:20

... properties of engineering components. Previous study by earlier researchers showed that an increase in tool life may be due to the following phenomena: (i) increase in hardness, 1 (ii) greater bonding ... has a higher melting point whereas other elements in the work piece such as Mn and P which have lower melting point have been disposed during drilling (Fig. 3). Melting point...

Ngày tải lên: 07/08/2014, 14:20

... properties of semiconductors requires a detailed investigation of the structure of the frame which remains after etching, of the initial bulk material and the state of its surface. The properties of ... is promising for the fabrication of high-quality quantum wire structures. The softening and broadening of the optical phonon line in the Raman spectrum also explains the...

Ngày tải lên: 07/08/2014, 14:20

... with increasing mole fraction of aniline. The increasing trend of η revealed that the addition of aniline increases the effective molecular area. 14 The increased in area due to the addition of ... reflected as the increased of π i . The perusal of Table 2 showed that π i is in increasing trend, thus revealing that the reduction of V f is not due to splitting of c...

Ngày tải lên: 07/08/2014, 14:20

... Generalized Inverse Estimator. 3–6 Principal component regression approaches the problem of multicollinearity by dropping the dimension defined by a linear combination of the independent variables ... Estimator of parameter , −rd γ 1 ˆ () − ′ ′′ = rrr rr ′ γ T TZZT TZY is the PCRE of parameter , is the remaining eigenvectors of γ r T ′ ZZ after having deleted of the...

Ngày tải lên: 07/08/2014, 14:20

... study of mixing process of free flowing polymers binary mixtures at different densities and colors in bubbling fluidized were investigated. The mixing properties were studied by analyzing the ... parameters influencing the solids mixing in the bubbling fluidized bed. From the results, complete mixing of binary polymer particles was attained at a bed depth of 17 cm and gas ve...

Ngày tải lên: 07/08/2014, 14:20