Báo cáo vật lý: "Emulsion Polymers of Core-Shell Styrene-Butyl Acrylate: The Effect of Feeding and Aging Time on Particle Size Distribution" pdf

... as all particles fall within the 200–300 nm range. Figure 4: Plot of conversion and particle size as a function of aging time. Table 2: Effect of aging time on the conversion of core-shell ... core-shell to feeding time) . The results of the conversion and particle size to the ratio of the feeding time are given in Table 1....

Ngày tải lên: 07/08/2014, 14:20

... kJÆmol )1 through the introduction of the disulfide bridge (at 5mm CaCl 2 and 25 ° C) is obtained. The influence of calcium ions on the unfolding kinetics The influence of the calcium ion concentration on unfolding ... as the last one of the four bind- ing sites. From the change of the unfolding rate constant under extreme conditions of calcium availability,...

Ngày tải lên: 19/02/2014, 17:20

... report and details of the mechanism, including the effect on 10 Determination of intracellular cAMP level To confirm the effect of W-7, intracellular cAMP levels under the control and W-7-treated ... Further study is required to determine whether the CaM has other functions including post-transcriptional effects on the expression of LiP and MnP. Ad...

Ngày tải lên: 20/06/2014, 20:20

... W-7. Intracellular concentration of cAMP following exposure to W-7 As mentioned above, W-7 repressed the activity of LiP andMnPandtranscriptionoflip and mnp genes even in the presence of cAMP and IBMX, ... 2012, 2:7 http://www.amb-express.com/content/2/1/7 Page 3 of 9 (Figure3).InthecaseofadditionofonlyW-7 ,the result was same as in the case of addition of cAMP, IBMX a...

Ngày tải lên: 21/06/2014, 17:20

... production, suggesting that the increased cAMP concentration affects the transcription of genes encoding LiPs and MnPs via reg- ulation of CaM transcription. Discussion Expression of all lip and ... in the report and details of the mechanism, including the effect on LiP and MnP transcriptions and the relationship between cAMP signaling and other signal tran...

Ngày tải lên: 21/06/2014, 19:20

... 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. Trace ... synchrotron radiation microbeams. They found that the border of the dentine and the pulp contain high concentrations of Ca, Pb and Zn. Pinheiro et al....

Ngày tải lên: 07/08/2014, 14:20

... surfactant ratio and the pH of the synthesis gel can greatly influence the characteristics of the resulting materials as they generally control the formation of micelles during the synthesis. 8 ... L. (2003). Chemistry of silica at different concentrations of non-ionic surfactant solutions: Effect of pH of the synthesis gel on the preparation of mes...

Ngày tải lên: 07/08/2014, 14:20

... to the 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 ... compared to the modified and the heat-treated modified AC. Decolourisation of RO16 by the Cu catalyst increases in the presence of H 2 O 2 and UV-light. The decol...

Ngày tải lên: 07/08/2014, 14:20

... to enhance the interaction between the clay and the polymer. 9 The surface of the MMT is commonly modified with a cation exchange technique to expand the basal spacing and make the layered ... combination of GF and OMMT could provide a synergistic effect on the mechanical and thermal properties and water absorption resistance of E. 7, 8 In nature, M...

Ngày tải lên: 07/08/2014, 14:20

... with emphasis on mechanisms of wear experienced 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 ... indicate failure of the cutting edge is dependent on the parameters mentioned above. In dry machining, wear mechanisms were caused by adhesion and micro-attrition at...

Ngày tải lên: 07/08/2014, 14:20