physical and chemical properties of the methylxanthines

... investigated the thickness dependence on the thermal, physical and chemical properties of ultra-thin films of selected polymers In the first part of our study, we investigate the thermal and physical properties ... transport properties when the film thickness approaches the bulk radius of gyration (Rg).9 Thus with important factors such as thickness of the films and the chemical properties of the polymer, ... by analyzing the light reflected from the sample In Figure 2.1, it shows that the amplitude of the electric wave which is in the plane of the incidence as Ep and the amplitude of the electric...

Ngày tải lên: 05/10/2015, 19:04

... 127 to 621º C The amount of time DDGS spends in the dryer also influences the color In general, the higher the dryer temperature and the longer DDGS remains in the dryer, the darker the resulting ... mean), the coefficient of variation (CV) and 08 - Physical & Chemical Characteristics of DDGS standard deviation (SD) of particle size within and among ethanol plants were calculated These results ... Production in the New Millenium, St Paul, MN pp 149-154 Ganesan, V K.A Rosentrater, and K Muthukumarappan 2005 Effect of moisture content and soluble levels on the physical and chemical properties of DDGS...

Ngày tải lên: 08/08/2012, 10:03

... varied from 2.5 to 5.0% where, 2.5 g and 5.0 g of wheat straw were added The effect of temperature and the effect of combination of xylanase, cellulase, and β-glucosidase were examined during ... with the enzyme activity of 700 IU/g, and Novozyme 188 is composed of Cellobiase from Aspergillus niger with the enzyme activity of 250 IU/g The effect of temperature was examined where the saccharification ... flask Then each flask was autoclaved at 135°C for h which was called water pretreatment After pretreatment, the effect of temperature and the effect of combination of xylanase, cellulase, and β-glucosidase...

Ngày tải lên: 05/09/2013, 15:28

... Metal/Organic and Oxide/Organic Interfaces Another important aspect in connection with the design and fabrication of OFETs is the role of interfaces, either between the OSC (organic semiconductor) and the ... various aspects of OFETs, including the synthesis of new materials, preparation and characterisation of organic thin films, characterisation of device properties and the development of new device ... overlap between the core tetracene units of adjacent rubrene molecules In addition to the lack of theoretical guidelines, there is also the severe problem of the measurement of the intrinsic mobilities,...

Ngày tải lên: 16/02/2014, 19:20

... complexes of GGH, where the a carbon of the His residue is the sole source of chirality [10] However, while positions of the component dd bands and of CT transitions are relatively constant, their ... albumins On the other hand, the direct thermodynamic and kinetic characterization of Ni(II) binding at site I in HSA and BSA was obtained These data can be very useful in further studies of the toxicologically ... values) of Ni(II) and Cu(II) complexes of peptides at I = 0.1 M (KNO3) and 25 C Standard deviations on the last digits are given in parentheses EPR The X-band EPR spectra of Cu(II) complexes of VIHN...

Ngày tải lên: 22/02/2014, 04:20

... comparison of the electronic absorption and RR spectra of the wild type and Thr171Ser either in the presence of the aromatic donor BHA or at alkaline pH Addition of saturating amounts of BHA did ... between the magnitude of the changes in Fe-His band frequencies and the redox potential values This is exemplied by the case of CCP and its mutants D235E, D235N and D235A [27] The H-bond between the ... between the proximal His and Asp residues that is weakened at alkaline pH Therefore, on the basis of their sensitivity to pH, the bands at 220 and 247 cm)1 are assigned to two m(Fe-Im) modes The band...

Ngày tải lên: 07/03/2014, 21:20

... 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

... is the angle between the projection of the tilt of the z axis on the xÂ, y plane (dened direction of tilt of z and the x axis), and j % a + c denes the location of the rhombic (x, y) axes The ... The two structures of WT metHb and rWT metHbH2O, exhibit signicant differences in the interaction of the FG loop with the heme and in the position of the B-helix, with Tyr32(B10) closer to the ... of WT and the other of rWT metHb, exhibit differences that include important portions of the protein that we have characterized above Thus parts of the FG corner move away from the heme and the...

Ngày tải lên: 23/03/2014, 17:22

... to other cathelicidins such as SMAP-29, BMAP-27 and BMAP-28 The amidated form would further increase the charge of the dimer to +28 (see Table 1) Here we further investigated the expression of ... on the surface of both the E coli and S aureus cells The dimeric peptide, in particular, can be seen to have caused the complete collapse of the membrane in E coli, and severe disruption of the ... at the proform level of the cathelicidin [21], and this structure is likely to persist in the mature peptide Indeed, it may explain the different activity spectra and potencies observed for the...

Ngày tải lên: 30/03/2014, 20:20

... analysis reveals that the product is composed of stannum and sulfur, and the ratio of the S atom and Sn atom is 1:0.985, which just accords with the stoichiometric ratio of SnS The representative ... clusters of nanowires The clusters may result from the situation that the nanowires not cover by the framework of AAO template but stand free incompletely When the alumina on the top of AAO template ... From these figures it can be estimated that the length of the nanowires is about several tens of micrometers It corresponds with the thickness of the AAO template which we used TEM images of SnS...

Ngày tải lên: 22/06/2014, 01:20

... (ANOVA), and calculations were done by the EP16 programme Results and discussion Chemical and FTIR analyses The analytical characteristics of the extracts isolated from the fruit body and mycelium of ... solution In the incubation chamber the gas mixture consisted of 5% CO2 and 95% air Furthermore, the humidity was adjusted to 85%, so as to diminish evaporation of the culture medium and the consequent ... directly and act as co-stimulators in the presence of the T-mitogen, PHA The SIcomit/SImit ratio was $2 In accord with the interpretation of the comitogenic test the ratio indicated adjuvant properties...

Ngày tải lên: 28/06/2014, 11:20

... “Gurum” and is semi-cultivated in the beach of the Nile River in the north of Sudan The green parts of the plant are used as animal feeds, the seeds are used as a masticatory article and the residue ... used as a source of heat energy for cooking.7 Due to the growth of the importance of oilseeds in the national economy of Sudan, the high demand to look for a new source of oil and the sufficient ... for determination of moisture the test and the temperature was Physiochemical Characteristics of the Oil Physiochemical characteristics of the oil were determined according to the reported methods.8...

Ngày tải lên: 07/08/2014, 14:20

... 0.8 μm The lengths of the rod-like grains were of 2.0 to 2.5 μm As the temperature was increased to 1300oC, the grains became slightly larger, with diameters of 1.0 to 1.2 μm The lengths of the ... capacitance comprises the 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 ... patterns for all the compositions fit well with the orthorhombic phase of standard BaNd2Ti5O14, ICDD No 33–136 The lattice parameters of the XRD show a = 12.20 Å, b = 22.35 Å and c = 3.84 Å However,...

Ngày tải lên: 07/08/2014, 14:20

... (2) 2bh2 Where P is the maximum load, l is the distance between the two bearing points, a the distance between the two loading points, b is the width and h the height of the specimen 2.9 R, T, ... corresponding to the standard methods MATERIAL AND METHODS 2.1 Selection of trees All the trees were selected along the St Elie trail in the rainforest of French Guiana (Tab I) The criteria for ... microphone The modes of natural vibration are related with elastic properties, green density and geometry of the beam The longitudinal MOE can be deduced using a formula that takes the effect of shear...

Ngày tải lên: 07/08/2014, 16:21

... evaluating the amounts of heartwood and tension wood, density and the shrinkage upon drying of the wood, two sets of stem discs were taken at 1.2 m, 6.5 m and 11.5 m (Fig 1) The first set of discs (A) was ... following the trend of increasing density 3.4 Veneer quality – Density and mechanical properties of plywood Figure gives an overview of the efficiency of the veneer processing as well as the different ... heartwood and physical- mechanical properties An important feature in the industrial processing of poplar wood remains the occurrence of tension wood fibres and their distribution within the stem...

Ngày tải lên: 07/08/2014, 16:21

... projects toward the improvement of the silvicultural management of existent stands and of the knowledge of that wood, in order to find its best end use DISTRIBUTION AND ECOLOGICAL CHARACTERS The Cedrus ... (three cm from the pith) Before the test, all the samples were put into a climatic chamber in order to reach the equilibrium m.c 12% The standard previews the calculation of the theoretical oven-dry ... to that of the most Italian utilised softwood (Norway spruce) and to that of other species planted in Italy [1] Bending and shear strength allow the classification of this wood into the “strong”...

Ngày tải lên: 08/08/2014, 14:20

... Distribution of the total score for the Trait subscale of the STAI Figure Distribution of the Trait and State scores of the STAI in normal subjects Distribution of the Trait and State scores of the STAI ... the study Translation and back translation were made by two of the authors; one of whom did the translation and the other who did not know the original English text did the back translation The ... In 20 of the patients the instrument was re-applied 1–2 days later tions may provide an impression of the stability of results over time Also, the means and the standard deviations of the differences...

Ngày tải lên: 08/08/2014, 21:20

... regardless of the improvement in their psychotic symptoms The current study reports on the reliability and the psychometric properties of the Greek translation of the SWN-20 Methods Study sample The ... KNF designed the study and participated in the analysis of the data, interpretation and writing of the manuscript MS, KM, EP, SM, IC, KA, AC and SD participated in the gathering of the data, interpretation ... between the two groups [25] In any case, the assessment of the patient's subjective experience may be of use in the evaluation of the differential effects of antipsychotics and their dose in SWB and...

Ngày tải lên: 08/08/2014, 23:21

... additional demands on the system The construction of a facility will have unavoidable impacts on the land use at the site Construction and operation may impact on the surface water bodies and the potable ... Conservation and Recovery Act RCRA, must be conducted to determine the nature of the solid waste generated by the gasification of the particular coal with the specified process The wastewater ... clarifiers and cooling towers, drainage from equipment and floor areas, demineralizer wastes and sanitary wastes Contaminants in these streams are generally a function of the intake water quality and...

Ngày tải lên: 10/08/2014, 20:20

... reactor and a membrane for the treatment of highorganic-matter-content wastewater The main function of the membrane is the filtration of the effluent and the recycle of the biomass to the reactor ... depending on the objective of treatment and the impurities to be removed from the wastewater Contact time between the carbon and the wastewater The pH of the wastewater (below pH of 9.0, the rate of adsorption ... from McGraw-Hill.) cost of the coagulants and the difficulty of disposing of the larger amount of the sludge produced by this process caused it to be abandoned The revival of chemical treatment can...

Ngày tải lên: 10/08/2014, 20:20