Báo cáo vật lý: "Immobilization of Dithizone onto Chitin Isolated from Prawn Seawater Shells (P merguensis) and its Preliminary Study for the Adsorption of Cd(II) Ion" pdf

... onto the surface of chitin, the intensity of dithizone bands is considerably low as compared to those of chitin. The XRD also suggests that immobilization of dithizone onto the surface of chitin ... depolymerization of chitin biopolymer into its monomers. Figure 2 gives the IR spectra of the reference and isolated chitin from prawn se...

Ngày tải lên: 07/08/2014, 14:20

... for the purpose of modeling of the effect of land use change on the runoff. 6 Land use, soil type, catchment size, and topographic structure were used as the bases for regionalization of their ... (1966–1991) for the purpose of calibration and eight (1994–1997) events for validation of their research model. The comparative results of their instantaneo...

Ngày tải lên: 07/08/2014, 14:20

... determine how the major components of the amalgam (Cu, Zn and Hg) diffuse into the structures of the teeth. Curson and Crocker 20 determined the concentrations of Zn and Pb in the pulp of the teeth. ... Elements in the Pulps of Healthy and Carious Teeth The pulp contains the nerves and blood vessels of the teeth. The blood vessels feed the...

Ngày tải lên: 07/08/2014, 14:20

... that the ratio of the silica source to the surfactant ratio and the pH of the synthesis gel can greatly influence the characteristics of the resulting materials as they generally control the formation ... 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...

Ngày tải lên: 07/08/2014, 14:20

... treatment. The reduction in surface area for Cu-AC can be explained by Cu 2 O and CuO deposition onto the external surface and inner porous surface of the AC. The presence of these oxides increases the ... portion of the H 2 O 2 is used to oxidise the AC, there are fewer hydroxyl radicals available to oxidise the dye. Second, the formation of a surface ox...

Ngày tải lên: 07/08/2014, 14:20

... by the cutting edge. In addition, the effects of other milling parameters were studied; cutting speed (m/min), axial depth of cut (mm) and feed rate (mm/tooth). Results indicate failure of the ... kali ganda berbanding dengan tidak menggunakan Prestasi Mata Alat Karbida 78 4. Barbezat, G. (2005). Advanced thermal spray technology and coating for lightweight engine block...

Ngày tải lên: 07/08/2014, 14:20

... cm –1 indicates the adsorbed water (H 2 O) in the pores of the solid. The shift of the band at ~ 660– 690 cm –1 indicates the interaction between ZrO 2 and the Al-O of the metal oxide pillar. ... confirmed by the adsorption- desorption isotherm profiles and the pore distribution graphs in Figures 3 and 4, respectively. Although the relationship betwe...

Ngày tải lên: 07/08/2014, 14:20

... 1). F these two molecules were used for the preparation of the deriva (Schemes 2 and 3). The structures of the compounds were elucidate NMR, mass spectroscopy and elemental analysis. The IR ... ring of activity of ence of free capacity on ncrease and at different time intervals. The percentage inhibition of LDL oxidation for the standards like BH...

Ngày tải lên: 07/08/2014, 14:20

... formation of AlN on the surface, which degrades the properties of the epilayer [6]. 2.2. Silicon Carbide (SiC) The main advantage of this substrate is that its lattice parameter and the thermal ... where r is the reflectivity of the electric field from a single interface, and n 1 and n 2 are the optical indices of the alternating B λ /4 material l...

Ngày tải lên: 07/08/2014, 14:20

... in the range of 0.0%–8.0% is also found. 1 The small quantity of the UFA is responsible for the relatively high resistance of the oil to oxidation. 2 The UFA easily form peroxides in the ... or the addition of any foreign materials before irradiation, thus the problem of reagent-introduced contaminants is completely avoided. The procedure involved the lon...

Ngày tải lên: 07/08/2014, 14:20