Báo cáo vật lý: "ATTENUATION STUDIES ON DRY AND HYDRATED CROSS-LINKED HYDROPHILIC COPOLYMER MATERIALS AT 8 02 TO 28 43 keV USING X-RAY FLUORESCENT SOURCES" ppt

... fat, 75% muscle), Breast 2 as Journal of Physical Science, Vol. 18( 1), 23–32, 2007 23 ATTENUATION STUDIES ON DRY AND HYDRATED CROSS-LINKED HYDROPHILIC COPOLYMER MATERIALS AT 8. 02 TO 28. 43 ... and tin targets to X-rays from an industrial X-ray tube; effectively producing 8. 02, 8. 89, 17.41, 19.55, 22. 08, 24 .87 , 25.16 and 28. 43 keV photo...

Ngày tải lên: 07/08/2014, 14:20

... inhibitor properties that work best at a concentration of 150 ppm and at a pH of 5. The polarisation measurement demonstrates that the extract under investigation acts as a mixed-type inhibitor, ... fruits and plants such as tea leaves, wine and potatoes. 5 Interestingly, catechin exhibits an anti-oxidative activity that stops oxidation and corrosion, the deterioration proces...

Ngày tải lên: 07/08/2014, 14:20

... band gap, which is not found in conventional semiconductors. The current semiconductor technology covers only the region between infrared to green [1]. The band gap of GaN at room temperature ... lattice and thermal matching substrate for this material system [3]. To date, sapphire and SiC substrates are most widely used for nitrides deposition. A (0001) sapphire has a lattice...

Ngày tải lên: 07/08/2014, 14:20

... density to generate new electron- hole pairs upon impact with an atom thus breaking lattice bonds. The valence band electrons at the surface could be tuned to the conduction band if photons with ... for the pore formation and nucleation in III-V semiconductors. Laser-induced etching (LIE) is an alternative technique for controlled dissolution of semiconductors and formation of...

Ngày tải lên: 07/08/2014, 14:20

... attributed to amylose-lipid complexes recrystallization. Starch concentration and cooling rate showed significant effect on the manifestation of these transitions. The 1:1 starch to water ratio system ... V h -type crystallinity. 18 Tufvesson and Eliasson 16 have reported that in potato starch-monoglyceride-water systems, type I complex started to melt at 88 .5 o C and...

Ngày tải lên: 07/08/2014, 14:20

... Previous researcher has reported that equilibrium conversions at oil:water ratios of 3:1 and 8: 1 were 90% and 72%, Preliminary Studies for Production of Fatty Acids 88 6. REFERENCES 1. Hermansyah, ... as enzyme and oil loading, temperature, pH and agitation speed. A maximum conversion was achieved in 90 min at oil concentration of 0.1 g/ml, enzyme loading of 7.46 kLU/...

Ngày tải lên: 07/08/2014, 14:20

... sorbate. 18 3.4 Sorption Isotherms The sorption isotherms of BB3 and RO16 were analysed using the Langmuir and Freundlich equations. The Langmuir equation is based on the assumption that ... maximum sorption corresponds to a saturated monolayer of sorbate molecules on the sorbent surface. The energy of sorption is constant and there is no transmigration of the sorb...

Ngày tải lên: 07/08/2014, 14:20

... et al . [1], and could be explained by a combined location of these genes on pathogenicity islands [3, 18] and on a plasmid [36]. The importance of toxin formation of S. aureus isolated from bovine ... h incubation at 37 o C, 25 µl of proteinase K (14 ,8 mg/ml; Sigma, USA) and 200 µl of buffer AL (containing reagents AL1 and AL2) was added. The suspension was incubated at...

Ngày tải lên: 07/08/2014, 17:22

... & Ryoo, R. (2003). Characterization of regular and plugged SBA-15 silicas by using adsorption and inverse carbon replication and explanation of the plug formation mechanism. J. Phys. Chem. ... precursor. For that reason, the TEOS to triblockcopolymer (TCP) ratio and the pH effect were chosen to be further investigated in this study. Elucidation of the characteristics o...

Ngày tải lên: 07/08/2014, 14:20

... uncoated and coated milling inserts. Wear, 225(1), 273– 284 . 25. Kopac, J. (19 98) . Influence of cutting material and coating on tool quality and tool life. J. Mater. Process. Technol., 78( 1), ... pemotongan seperti yang dinyatakan Ghani et al. 6 Penggunaan bendalir pemotong juga didapati telah meningkatkan hayat mata alat hampir sekali ganda. Bendalir pemotong berasaska...

Ngày tải lên: 07/08/2014, 14:20