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

... structure of RO16 dye. Journal of Physical Science, Vol. 21(2), 29–40, 2010 29 Decolourisation of Reactive Orange 16 by Activated Carbon and Copper Oxide Catalysts Supported by Activated ... Decolourisation of Reactive Orange 16 (RO16) dye by HNO3-modified activated carbons (ACs) and a copper oxide catalyst supported by modified AC (Cu-Ac) were investigated. The percentage of colour ... the effect of HNO3-modified AC and its corresponding Cu -supported catalyst on the decolourisation of Reactive Orange 16 (RO16) dye. The chemical structure of RO16 dye is shown in Figure 1. ...

Báo cáo vật lý: "Effect of Blowing Agent Concentration on Cell Morphology and Impact Properties of Natural Rubber Foam" ppt

... absorbed and Etrans is the energy recorded by the transducer. The impact toughness of the foam was obtained by dividing by the sample volume, and the toughness is reported in units of J ... fraction of toluene, which can be obtained from Equation (4), and = weight of the rubber, given by Equation (5). sXrX ()−=sWeight of Swollen Sample Original WeightXWeight of Swollen ... can be controlled by the proper selection of blowing agents and curatives to achieve the correct balance between the gas generated and the degree of curing.8–9 Sodium bicarbonate, which was...

Báo cáo vật lý: "Synthesis of Degradable Bio-Composites Based on Recycle Polypropylene Filled with Bamboo Powder Using a Reactive Process" pptx

... of the vinyl group of AA at 163 6 and 1412 cm–1, and the vinyl group of DVB at 163 1 and 1400 cm–1 is due to those non polar double bond of vinyl that bound with non polar methine group of ... typical of PP; 2843, 1450, 1377 and 999 cm–1 from methine, methylene and methyl groups; 1732 cm–1 from carbonyl ester group and 163 9 cm–1 impurities of PP. A shift in AA carbonyl group ... ASTM D638-97 by means of interesting test to every bio-composites specimen using tensometry. The functional groups of compounds were characterized by FTIR. The profiles of degradation and decomposition...

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 ... 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 ... consumption of soil and by dermal absorption. The presence and/ or absence of trace elements in the environment influences their availability to humans.1 For example, in the rural areas of Finland,...

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

... application 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 ... 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: "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,...

Báo cáo vật lý: "Preparation of ZrO2/Al2O3-pillared Saponite and Its Spectroscopic Investigation on NOX Adsorption" pptx

... dispersion and high surface area of ZrO2 that cause interaction between H2O in air and NOx to produce HNO3. The interaction of Al-O and NO can be detected by the presence of the vibration ... the use of pillared clays as solid supports for metal and metal oxide catalysts. For this purpose, relatively stable and reproducible pillared clays are needed. Among other metal oxides, a ... surface area and Zr content of the samples. At high concentrations of ZrO2, the pore structure evolution was observed. This is confirmed by the adsorption-desorption isotherm profiles and the...

Báo cáo vật lý: "Evaluation of In Vitro Antioxidant Activity of 5H-dibenz[b,f]azepine and Its Analogues" ppt

... preparation of the deriva(Schemes 2 and 3). The structures of the compounds were elucidateNMR, mass spectroscopy and elemental analysis. The IR spectra of (e) and (f) showed the absent of the N–H ... purity of the compounds was checked thin la fied by column hr n a silica gel (60–120 mesh) bed as adsorbent and hexane and th of o-nitro nol in the presence of the catalyst ethyl formate and ... 2200, Bandelin CompanyGermany). Compounds of different concentrations (5, 10 and 15 µMadded to 1 ml of the liposome mixture and to the control (without teLipid peroxidation was induced by adding...

Báo cáo vật lý: "EFFECTS OF Si, Al2O3 AND SiC SUBSTRATES ON THE CHARACTERISTICS OF DBRS STRUCTURE FOR GaN BASED LASER" ppsx

... = 420 nm with 15-pairs of alternating GaN and Al0.3Ga0.7N layers. DBRs have a limited reflectance band. The spectral width of the high reflectivity band is given by [10]. effBnnπλλ∆=∆2 ... infrared to green [1]. The band gap of GaN at room temperature is 3.4 eV (corresponding to a wavelength of 365 nm in the ultraviolet region) and that of InN, AlN are 1.9 and 6.2 eV, respectively. ... interface is given by 2121nnnnr+−= (1) where r is the reflectivity of the electric field from a single interface, and n1 and n2 are the optical indices of the alternating Bλ/4...

Báo cáo vật lý: "PREPARATION OF SELENIUM-DOPED ACTIVATED CARBON AND ITS UTILIZATION FOR IMPROVING THE QUALITY OF USED COCONUT OIL" pps

... activated carbon, ZC = activated zeolite, MAC = 2.5% (w/w) Se /activated carbon, MAC2 = 5% (w/w) Se /activated carbon and MZC = 5% (w/w) Se /activated zeolite Preparation of Selenium-Doped Activated ... provided by element -by- element comparison of the number of γ-rays emitted per unit time by the MAC material to the number of γ-rays emitted per unit time by the calibration standards. Standards ... the propagation step leads to the formation of peroxide and hydroperoxide which are unstable, reactive Preparation of Selenium-Doped Activated Carbon 20 11. Bertolino, F.A., Torriero, A.A.J.,...

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