the chemical and physical properties of building materials

... 38 v A REVIEW OF THE CHEMICAL AND PHYSICAL MECHANISMS OF THE STORAGE STABILITY OF FAST PYROLYSIS BIO-OILS ABSTRACT Understanding the fundamental chemical and physical aging mechanisms ... during pyrolysis • The extent of vapor dilution in the reactor • The time and temperature history of the vapors in the reactor • The time and temperature history of the vapors in the heated transfer ... fines • The water content of the bio-oil • The extent of contamination of the bio-oil during storage by corrosion or leaching of the containers • Exposure to air during storage • The length of storage...

Ngày tải lên: 19/06/2014, 14:02

... 1998a), the principal component of MTA is Portland Cement There are kinds of MTA available: one is Gray MTA and the other is White MTA The main difference between the two is the lack of the aluminoferrite ... by implanting them in the mandible and tibia of guinea pigs After anesthetizing the guinea pigs, tissue flaps were raised and bony cavities drilled in the mandible and tibia The materials were ... by Holland et al (1999a), and Holland et al (2001b), that the mode of action of MTA was similar to Calcium hydroxide The basis for the biologic properties of MTA was due to the production of hydroxyapatite...

Ngày tải lên: 15/09/2015, 22:51

... utilization The physical and mechanical properties of bamboo vary with the age of the bamboo and the height of the culm [Chauhan 2000] In general, SG and the properties of bamboo drop from the top ... fiberboard and evaluate water soaking, modulus of elasticity (MOE), modulus of rupture (MOR), and internal bond (IB) properties of the panels and compare the age effect on the physical and mechanical properties ... focuses on the utilization of bamboo fibers to MDF This chapter investigated the effects of age of bamboo fibers and the resin content level on the physical and mechanical properties of the manufactured...

Ngày tải lên: 22/02/2014, 09:20

... contributions of the OH with either the =N or the nitro groups making the pKa1 extremely acidic On the other hand, the field effect of the negatively charged groups (SO3- and O-) and the H-bond of the ... chemical and physical properties to Program Offices (e.g., Office of Water, Office of Solid Waste and Emergency Response, Office of Prevention, Pesticides and Toxic Substances) and Regional Offices ... databases The strength of the electrostatic interaction between S and C depends on the magnitude and relative orientation of the local fields of S and C and the dielectric properties and distances...

Ngày tải lên: 22/03/2014, 14:20

... shown that the antibacterial ⁄ fungicidal properties of trappin-2 involve the cationic nature of the molecule, as assessed from the salt and heparin dependence of the antimicrobial and antifungal ... antibacterial and antifungal properties may thus reinforce its therapeutic potential Therefore, in the present study, we investigated the antibacterial and antifungal properties of trappin-2 towards ... We then examined the effect of heparin on the antimicrobial 2012 Fig Western blot analysis of elafin and trappin-2 fractionated on heparin-Sepharose The heparin-binding capacities of elafin and...

Ngày tải lên: 18/02/2014, 17:20

... outside the channels of SBA-15 with size of 10-15nm and catalytic activities of these materials decreased pH value also affects directly on the selectivity of gluconic acid product and the best ... with the size under 6nm in the channels of SBA-15 and at this state, Pt/SBA-15 catalyst showed the highest activity and selectivity in the oxidation of glucose When increasing the content of Pt ... nano sizes was dispersed inside the pore of support material (a) 3.3 Catalytic activities of Pt/SBA-15 in the oxidation of D-glucose The results of the oxidation of D-glucose carried out on Pt/SBA-15...

Ngày tải lên: 05/03/2014, 11:21

... [20]: koff ẳ koff2ị ẵibuprofen=K2 ẵibuprofenị ỵ koff3ị ẵibuprofen=K3 ẵibuprofenịị ỵ kỵ off 7ị where koff(2) and koff(3) indicate values of koff occurring at K2 < [ibuprofen] < K3, and at ... K3 < [ibuprofen], respectively, and kỵ is the koff value obtained in the off absence of ibuprofen Data analysis Kinetic and thermodynamic data were analyzed with the matlab program (The Math Works, ... s)1) Ibuprofen binding to tHSAheme-Fe(II)-NO Figure shows the binding isotherm for ibuprofen binding to tHSAheme-Fe(II)-NO Analysis of the dependence of the molar fraction of the ibuprofenbound...

Ngày tải lên: 06/03/2014, 01:20

... for the wild type (WT) and mutant Tms The uncertainties listed are the standard errors of the mean and included the uncertainty in the determination of protein concentrations The values are the ... parameters for the thermal-induced unfolding of wild type (WT) and mutant Tms The values are the mean ± standard deviation of at least three experiments Tm1 is the midpoint of the thermal transition ... indicate that the main effects of mutations A63V, K70T and E180G are mainly related to the overall stability of the protein as a whole, rather than on the position of the mutation in the polypeptide...

Ngày tải lên: 16/03/2014, 18:20

... temperature and eliminates the porosity of ferrite The magnetization curves of all samples have been measured at 110 K in maximal applied field of 13.5 kOe The results showed that at this field the studied ... interaction and we suppose in our studied samples there is canting structure as illustrated in Fig 2, where ϕ is the angle between direction of magnetic moment of A ions and magnetic moment of B1 and ... study the spin order and magnetic behavior of samples, the field-cooled (FC) and zero field-cooled (ZFC) magnetization measurements were performed in magnetic field of 20 Oe (Fig ) The FC and ZFC...

Ngày tải lên: 22/03/2014, 11:20

... Sim Yin and Tan Jin Yi as being together for the completion of the lab work and given their help to complete my thesis I would also like to thank Teoh Hang Boon and Choi Yik Huey for their guidance ... natural product and their chemical composition varies from one herb to another Therefore, the effect of herb varies from people to people and there were I some different usages of a same herb ... Valuation of Livelihoods for Understanding the Composition and Complexity of Rural Households Agriculture and Human Values 22:87-103 Druiynska, B, A & Wotosiak, R 2007 The Influence of Time and Type of...

Ngày tải lên: 05/05/2014, 08:39

... transported to the nearest lymph nodes and then—in the blood—to other organs (Bjorksten et al., 2001) The next stage is the mode of presentation of the antigen to Th0 cells and biochemical and functional ... Chemical and Biological Properties of Food Allergens Chemical and Functional Properties of Food Components Series SERIES EDITOR Zdzisław E Sikorski Chemical and Biological Properties of Food ... nology, food sciences, and food allergies, and is the head of the Department of Food Enzymes and Allergens at The Polish Academy of Sciences’ Institute of Animal Reproduction and Food Research in...

Ngày tải lên: 28/05/2014, 14:08

... independent of the excitation power which is a typical feature of the type-I band transition Therefore, the interband transition of the GaSb QD would be the only proper origin of the high-energy ... inset of Figure 3b shows the linear dependence of the PL peak energies and the third root of the excitation power Many researchers attributed the high energy PL peak to the transition of the wetting ... character of type-II heterostructures The other supporting evidence of the type-II luminescence is the linear dependence of the PL peak energies over the third root of the excitation density [20] The...

Ngày tải lên: 20/06/2014, 20:20

... agreement with the results of XRD and TEM, the FTIR and FT-Raman spectra of the HAp show the absorption bands characteristic of hydroxyapatite XPS results provide the additional evidence for the successful ... information about the size and typical shape of the as-prepared samples The results suggest that the doping Ag+ has little influence on the morphology of the HAp The samples prepared at the atomic ratio ... (AgNPs) [31] The exact antibacterial action of AgNPs is not completely understood [32] On the other hand in the literature, the studies on the preparation and characterization of the silver-doped...

Ngày tải lên: 20/06/2014, 23:20

... image of the nanowire (e) High-resolution image of a portion of the nanowires The inset of (a) shows a higher magnification image of sample A; the inset of (b) is a top view image; the inset of ... to the LO and TO phonon modes of bulk InAs Therefore, Raman peaks located at 237.9 and 216.2 cm -1 in Figure 2a can be attributed to the LO and TO phonon mode of InAs NWs Except the downshift of ... [20] and Tiong et al [21], and also generalized by Campbell and Faucher et al [22], the reduction in physical dimension of materials can lead to a downshift of phonon frequency and a broadening of...

Ngày tải lên: 21/06/2014, 01:20

... light the sensitizing effect of Si-np towards Nd3+ ions The evolution of the integrated PL intensity of the Sinp PL band and the 920-nm PL peak is shown in the inset of Figure The enhancement of the ... underlines the strong coupling between Si-np and Nd 3+ ions, and, accordingly, the potential of sensitizing of Si-np The increase of the PL intensity of Nd 3+ is then explained by the increase of the ... related to the increase of the number of Si-OSi bonds at the SiO x /Si-np interface [19,20], i.e., the increase of the density of Si-np [21] Figure presents the evolution of the FTIR spectra of samples...

Ngày tải lên: 21/06/2014, 05:20

... as Rsh of the cell is in the order of MX.cm2 The short circuit current increases by a factor of three due to the decrease of Rs Contact and Sheet Resistances To identify the origin of the large ... comparison with the semiconductor sheet resistance, as shown in Fig Therefore, the reduction of series resistance is largely due to the reduction of the material’s resistivity The implication of the results ... shown that the situation of the shunt gets worse with the annealing process (Fig 4b) This suggests the existence of localised Al shunts lying across the p-type and n-type regions as the annealing...

Ngày tải lên: 21/06/2014, 07:20

... of the excitation power which is a typical feature of the type-I band transition Therefore, the interband transition of the GaSb QD would be the only proper origin of the highenergy peak In the ... character of type-II heterostructures The other supporting evidence of the type-II luminescence is the linear dependence of the PL peak energies over the third root of the excitation density [20] The ... with the 2DEG, electrons will still be blocked by the GaSb barrier and will not enter the QDs Therefore, this structure will prolong the lifetime of the holes So, the QD-FET based on the above band...

Ngày tải lên: 21/06/2014, 17:20

... being the lattice constants of the unstrained superlattice structure We have examined the accuracy of our calculations by studying the influence of different strains on the properties of BTO and ... than the theoretical value of 0.81 C/m2 of ground state PTO, but slightly larger than the value of 0.28 C/m2 of tetragonal BTO (the other theoretical value is 0.26 C/m2 [28]), which supports the ... reflect the slope of polarization versus stress curves The enhancement of piezoelectricity corresponds to the maximum slope of the curve of Fig 4a at rc, it is the change of magnitude of polarization...

Ngày tải lên: 22/06/2014, 00:20

... of the excitation power which is a typical feature of the type-I band transition Therefore, the interband transition of the GaSb QD would be the only proper origin of the highenergy peak In the ... character of type-II heterostructures The other supporting evidence of the type-II luminescence is the linear dependence of the PL peak energies over the third root of the excitation density [20] The ... with the 2DEG, electrons will still be blocked by the GaSb barrier and will not enter the QDs Therefore, this structure will prolong the lifetime of the holes So, the QD-FET based on the above band...

Ngày tải lên: 22/06/2014, 00:20

... Conversion/Selectivity (%) ð1Þ The effects of the process of segregation and de-mixing of these rare earths on the SnO2 catalytic properties were studied and compared In spite of the relatively low specific ... determine the basic properties of the catalysts The results from the isotherms of the CO2 adsorption are shown in Table The CO2 adsorption isotherms are very sensitive to the presence of polar groups ... nature of the catalyst, the type of interaction with the surface of the solid material, and the different reaction conditions [9, 10] Ethanol is rapidly dehydrated and dehydrogenated over the catalysts...

Ngày tải lên: 22/06/2014, 01:20