microwave heating and the dielectric properties of foods

... and the A- and the P-loops (that are the stem loops of helices H80 and H92) The second (middle) shell includes helices H80 and H92, the stems of the A- and the P-loops, H74 and H90 The outer shell ... Analysis of the properties of this region illuminated a unified mechanism for the formation of the peptide bond, the translocation of the tRNA molecules and the entrance of nascent proteins into the ... formation, and the shift of the acceptor stems of the tRNA Sovereign motions of structural features of the tRNA, although of a different nature, were suggested previously and are the basis for the hybrid-state...

Ngày tải lên: 23/03/2014, 17:22

... size and the density of ceramics have a strong effect on dielectric, piezoelectric and ferroelectric properties of ceramic materials The relationships between the grain size and the density of ... hysteresis loops depend on dielectric loss of the material Therefore, the dielectric loss increases, the size of the hysteresis loops increases, the remanent polarization Pr and the coercive field Ec ... tan = 0.005 and Pr = 34,5àC/cm2 - On the basis of the experimental results of the effects of temperature and frequency on the dielectric, ferroelectric, piezoelectric properties of ceramics has...

Ngày tải lên: 04/12/2014, 02:54

... capacitance of the grain and air in the pores It is well known that the capacitance of air is very much less than that of the grains.17 Therefore, the less dense sample has a lower dielectric ... properties of dielectric materials, including the contents of individual crystalline, secondary phases and the degree of densification Therefore, a series of experiments was performed to find the optimum ... compositions The sample with composition MBNT4 showed the highest dielectric constant in the range of 75 to 85 with different sintering temperatures The value of the dielectric constant Journal of Physical...

Ngày tải lên: 07/08/2014, 14:20

... significantly absorbed in the intestinal tract, and reach the colon mainly intact [27] They are therefore bioavailable to the epithelial cells in the intestinal wall, where procyanidins and other phenolics ... investigated the relationship of different structural factors of procyanidins, such as the mean degree of polymerization and percentage of galloylation, with their antiproliferative potential and their ... from green tea, is a potent antioxidant and chemopreventive agent [21,22] These and other results suggest that the galloylation of catechins and the presence of gallocatechin moieties in natural...

Ngày tải lên: 07/03/2014, 05:20

... sodium dithionite The EPR spectra and the redox properties of chlorite dismutase are, surprisingly, more similar to those of the globins than of the heme enzymes The midpoint potential of chlorite ... aliquots of where B is the maximum absorbance difference, [L] is the ligand concentration, Aobs is the observed absorbance, and A0 is the absorbance without ligand Preparation of NO adduct of chlorite ... peroxide concentration, the Soret band decreases as the result of further oxidation of the heme by the excess hydrogen peroxide EPR spectroscopy of chlorite dismutase and adducts Ferric chlorite...

Ngày tải lên: 08/03/2014, 16:20

... by DSC to be the Tm of the protein These fibrils are amyloidogenic, as determined from their Stability and fibril formation of TTR and TRP tinctorial properties in the ThT-binding and CR-binding ... heating These fibrils are similar both in shape and in dimension to the fibrils of hTTR and sbTTR formed by heating The thick and straight morphology of heat-induced fibrils of hTTR, sbTTR and ecTRP ... thermal stability Furthermore, there is a clear correlation between thermostability and molecular volume occupied by the tetramers (Table 1) The difference between the tetrameric volume and the...

Ngày tải lên: 16/03/2014, 01:20

... conformation and hydrogen bonding network of the pterin cofactor in the three structures Superpositions of the binary and ternary complexes of hPAH onto the crystal structure of the ligand-free dimeric ... features of its hysteretic properties Thus, the structures of the binary and ternary complexes of hPAH have provided a detailed picture of the protein contacts involved in the binding of biopterin cofactor ... required for the cofactor inhibition of phosphorylation (data not shown) The molecular basis for the negative modulatory effects of the pterin cofactor and dopamine binding to wt-hPAH and their reversal...

Ngày tải lên: 17/03/2014, 09:20

... in the EPR tube They contained 24 mg Rc1Fe per mL and 0.6 mg Rc2Fe per mL in the case of the Fe nitrogenase and 28 mg Rc1Mo per mL and 0.7 mg Rc2Mo per mL in the case of the Mo nitrogenase The ... type of nitrogenase cluster [27–31] In view of the lack of analogous studies on the cofactor and the P-cluster of the MoFe protein from R capsulatus (Rc1Mo), as well as our intention to use the ... stems from the P3+ cluster, then the g ¼ 2.27 feature derives from the FeFe cofactor On the other hand, if the broad signal, despite its unusual properties, represents the P1+ cluster, the narrow...

Ngày tải lên: 18/03/2014, 01:20

... close to the wavenumbers of the strongest modes of monoclinic tungsten oxide The two bands at 270 and 327 cm−1 had been assigned to O W O bending modes of the bridging oxide, while the 712 and 807 ... determine whether the crystalline structure is triclinic or monoclinic, since their position and relative intensity is very similar On the other hand, the intensity distribution of the diffraction ... consists of W 4f7/2 and W 4f5/2 doublet peaks with the spin-orbit splitting energy of 2.1 eV Fig 6A and B shows W 4f XPS spectra of N2 annealed samples at the two temperatures of 400 and 600 ◦...

Ngày tải lên: 20/03/2014, 13:11

... kinetic properties of NR1, and as we have shown for CPR and P450 BM3 (23,24,28) the properties of the flavin binding domains of NR1 are likely to mimic the redox properties of the domains in full-length ... spectroelectrochemical titrations of the isolated FAD/NADPH and FMN domains of NR1 enabled the determination of the midpoint reduction potentials for the oxidized/semiquinone (E1) and semiquinone/hydroquinone ... FAD/NADPH domain and the oxidized FMN domain The lack of a second order dependence of the observed rate for interdomain electron transfer as the Ó FEBS 2003 Redox properties of human NR1 (Eur...

Ngày tải lên: 23/03/2014, 21:20

... diminish in the presence of either drug In fact, the Soret band is blue-shifted, the charge transfer band is red-shifted and the a band is decreased in intensity with respect to the b band The spectral ... q FEBS 2001 vicinity of the binding site(s), affecting both the structure and the ligand binding properties of the whole HSA molecule [1 –11] The interaction of ligands with HSA occurs mainly ... Â 1028 M and n ¼ 1.0 ^ 0.1, in the absence of drugs, and Kd ¼ 1.5 ^ 0.2 Â 1027 M and n ¼ 1.0 ^ 0.1, in the presence of ibuprofen and warfarin The haem concentration was 1.0 Â 1027 M The electronic...

Ngày tải lên: 31/03/2014, 23:20

... conducted the statistical analyses and wrote the manuscript BK and URS were the principal investigators of the study; they designed the study's concept and supervised the writing of the manuscript ... psychometric properties The first psychometric property of interest is the dimensionality of the assessment Analyses of this property could reveal whether the children themselves and their parents ... indicator of a chronic health condition Proxy report data were available for 7,166 cases In 82.8% of cases, the proxy was the mother and in 11.4% it was the father The mean age of mothers was...

Ngày tải lên: 18/06/2014, 19:20

... conducted the statistical analyses and wrote the manuscript BK and URS were the principal investigators of the study; they designed the study's concept and supervised the writing of the manuscript ... psychometric properties The first psychometric property of interest is the dimensionality of the assessment Analyses of this property could reveal whether the children themselves and their parents ... indicator of a chronic health condition Proxy report data were available for 7,166 cases In 82.8% of cases, the proxy was the mother and in 11.4% it was the father The mean age of mothers was...

Ngày tải lên: 20/06/2014, 16:20

... [29] Page of 12 The temporal behavior of the channel capacity can be investigated with the help of the LCR and ADF of the channel capacity The LCR of the channel capacity is a measure of the expected ... presents the derivation and analysis of the PDF, CDF, LCR, and ADF of the instantaneous channel capacityc of spatially correlated Nakagami-m channels, for both MRC and EGC The PDF of the channel ... can be found with the help of (4) and by employing the relation pg(z) = (1/gs) pΞ (z/gs) Thereafter, applying the concept of transformation of random variables, the PDF pC(r) of the channel capacity...

Ngày tải lên: 20/06/2014, 22:20

... supported by the Thailand Research Fund (TRF) and the National Research University Project under Thailand's Office of the Higher Education Commission (OHEC) The Faculty of Science and the Graduate ... the BNZT ceramic experiments, analysis, and writing of the manuscript AR carried out the crystal structure investigation of the specimens SJ and AW participated in the conception and design of ... with the matrix phase and therefore could not be detected by the XRD technique Figure displays the compositional dependence of BNZT ceramics of dielectric constant at frequencies of 1, 10, and...

Ngày tải lên: 20/06/2014, 23:20

... that the emission area in this high field region not changed, and the stability of field emission is high The slopes and intercedes of these plots in the high field region are the same, showing the ... influences the length of as-obtained nanowires Actually, the length of the nanowire depends on the thickness as well as the growth time Given that the growth reaction is completed, we observe that the ... are the same With the temperature increasing, the turn-on field is 2.0, 5.5 and 7.0 V/lm, respectively The turn-on field for the former one is lower than that of the latter two, mainly because they...

Ngày tải lên: 21/06/2014, 17:20

... the BNZT ceramic experiments, analysis, and writing of the manuscript AR carried out the crystal structure investigation of the specimens SJ and AW participated in the conception and design of ... at room temperature of BNZT ceramics The samples sintered at 950°C were measured at frequencies of 1, 10, and 100 kHz Page of Table Dielectric constant and loss of the BNZT and BNZ ceramics x ... Thailand’s Office of the Higher Education Commission (OHEC) The Faculty of Science and the Graduate School of Chiang Mai University is also acknowledged P Jaiban would like to acknowledge the...

Ngày tải lên: 21/06/2014, 17:20

... considering only thermal population effects in the range of 15–60 K, we have imposed and solved a set of rate equations The solutions gave us the expressions for the intensities I1, I2 and I3: I1 ðTÞ ... demonstrated that the PL of CdSe core and CdSe/ZnS core/shell QDs in the first ns arises from the intrinsic bright ± 1U and ± 1L states with lifetime of about 60 ps and 450 ps, respectively, and from surface ... relative weights of each process, the longest component being more and more important by detecting wavelengths from the blue to the red side of the whole emission spectrum Moreover, the nonexponential...

Ngày tải lên: 22/06/2014, 18:20

... provided by microwave or conventional heating increased the yield of 5b, ii) in case of the oxidation of 4, the assistance of microwave or ultrasound increased the formation of 1a by cleavage of a methyl ... Structure of substrates and products in the oxidation of alkylarenes 2.RESULTS AND DISCUSSION The stoichiometric factor investigated on the oxidation of diphenylmethane in two methods (microwave and ... 15 mL of diethyl ether The combined extracts were filtered through a 1.5–2 cm layer of celite 545, and then dried (anhydrous Na2SO4) After removal of the solvent by rotational evaporation, the...

Ngày tải lên: 22/07/2014, 03:20

... where Oc is the percentage of organic content, WI is the initial weight of the water hyacinth fibers and WF is the weight of the fibers after heating The level of organic content in the water hyacinth ... between the cellulose and the LDPE matrix Therefore, the mechanical properties of the composites had improved Elongation at break of the pure LDPE was higher than the corresponding values for the ... increased to the point of being comparable to that of pure LDPE The presence of a coupling agent improved the mechanical properties of the composites A comparison of the SEM micrographs for the fracture...

Ngày tải lên: 07/08/2014, 14:20