Báo cáo vật lý: "Performance of Carbide Cutting Tool when Machining Cast Iron FC 250 in Dry Condition and Using Cutting Fluid" ppt

... Pemotong (Performance of Carbide Cutting Tool when Machining Cast Iron FC 250 in Dry Condition and Using Cutting Fluid) Jaharah A. Ghani * , Mohd Noor Azmi Mohd Rodzi, Noordin Ibrahim dan Che ... above. In dry machining, wear mechanisms were caused by adhesion and micro-attrition at low combination of machining parameters. While at high comb...

Ngày tải lên: 07/08/2014, 14:20

... rural area, and its inhabitants obtain their livelihood from agriculture. In addition, the inhabitants of this city drink underground water, and 99% of the population cooks their meals using metallic ... techniques, including the use of microprobes. Our results indicate that trace elements are systematically but inhomogeneously distributed within the enamel and dentine of...

Ngày tải lên: 07/08/2014, 14:20

... diameter and pore volume increased with increasing pH. This phenomenon can be clearly explained based on the understanding of the interactions between the surfactant and silicate. Below a pH of 2.0, ... micelles during the synthesis. 8 Hence, many aspects of the synthesis processes are involved in developing these porous materials, and they still require greater insight an...

Ngày tải lên: 07/08/2014, 14:20

... high oxidising power of free radicals. Production of these radicals is achieved using either single oxidants or combinations of ozone, H 2 O 2 and UV radiation 13 and a combination of H 2 O 2 ... observed for Cu-AC and Cu-AC/UV and for Cu-AC/H 2 O 2 and Cu-AC/H 2 O 2 /UV, as depicted in Figure 7. A steady decline in the intensity of the 387 nm and 492 nm pe...

Ngày tải lên: 07/08/2014, 14:20

... wavelength of Zr/APS is estimated to be in the range of 215 250 nm, suggesting nano size zirconia formation in the APS matrix. The character of spectra indicates the formation of monoclinic metaphase ... reported 9 in the synthesis of titanium (Ti) pillared clays and the dispersion of TiO 2 in an aluminium pillared saponite matrix. In addition, the difficulty...

Ngày tải lên: 07/08/2014, 14:20

... schemes 1–3. In scheme 3, b inst dition, and co mpound (f) was obtained by using acid chloride, chloride, at RT instead of using acetic anhydride in the presence o strong base in the reflux condition. ... cancer and are gaining f preventive lly useful e generated in various components of the body (e.g., lipids, proteins and nucleic acids) and may also be i...

Ngày tải lên: 07/08/2014, 14:20

... 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 layers. As stated above, the B λ /4 optical thickness of the ... surface-emitting laser (VCSEL) type of laser. In this paper, we report the influence of different substrates on the reflectivity of DBR structure by using three differ...

Ngày tải lên: 07/08/2014, 14:20

... Changes in susceptibility of tissues to lipid peroxidation after ingestion of various levels of docosahexaenoic acid and vitamin E. Br. J. Nutr., 78, 655–669. 22. Hussein, M.Z., Kuang, D., Zainal, ... distribution and nitrogen adsorption-desorption isotherm of the samples were obtained using a gas sorption analyzer (NOVA 1000). Each of the AC and MAC samples was heat...

Ngày tải lên: 07/08/2014, 14:20

... sample was determined by dividing the mass of sample by its volume and the sintered density of sintered samples was measured using pycnometer density machine. Both green and sintered densities ... FABRICATION OF LOW COST OF ALUMINIUM MATRIX COMPOSITE REINFORCED WITH SILICA SAND H. Zuhailawati*, P. Samayamutthirian and C.H. Mohd Haizu School of Materials and Mine...

Ngày tải lên: 07/08/2014, 14:20

... existence of grain-field interactions and grain-grain interactions are confirmed in the ferrofluid system and this make one to think of using the fluid for biomedical applications. Grain-field interactions ... observations are interpreted in terms of grain-grain interaction and grain-field interaction that exist in the system. The field strength is found to enhance the...

Ngày tải lên: 07/08/2014, 14:20