xiao amp dong on the morphological and ecological history of proterozoic macroalgae

Báo cáo " Study on the characteristics and catalytic properties of Pt/SBA-15 in the selective oxidation of D-Glucose " potx

Ngày tải lên : 05/03/2014, 11:21

... end of the reaction was about 2.7 This condition facilitated the formation of gluconolactone and disaccharide and inhibited the catalyst activity [2] So, we should add alkaline solution continuously ... products of D-glucose oxidation on PS-1 catalyst On the other hand, the reaction on Pt/SBA15 catalysts with pH control not only showed a high conversion, but also high D-gluconic acid selectivity This ... suitability of plantinum nanoparticles in the selective oxidation of glucose When the reaction was performed without pH control on PS-1 catalyst, the conversion decreased significantly The pH at the...

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Báo cáo khoa học: Context-dependent effects of proline residues on the stability and folding pathway of ubiquitin docx

Ngày tải lên : 07/03/2014, 16:20

... WT*, and that the substitutions are not signiﬁcantly perturbing the position of the TSE along the folding pathway [51,52] We have considered the P37/P38 mutations simultaneously and constructed the ... structure of human ubiquitin [32] The position and orientation of the side chains of Pro19, Pro37 and Pro38 are highlighted along with the F45W mutation (drawn using MOLMOL [38]) The sequences of human ... backbone assignment of WT* for comparison with P37A, P38A and the A37A38 double mutant and have examined chemical shift perturbations and the pattern of NOEs in the vicinity of the mutation sites...

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Greasy palms - The social and ecological impacts of large-scale oil palm plantation development in Southeast Asia docx

Ngày tải lên : 08/03/2014, 10:20

... and Indonesia The macro-economic contributions of the oil palm sector are honoured by the appearance of the oil palm tree on the Indonesian Central Bank’s Rp 1,000 coins Having acknowledged these ... enforced, and whether they can identify the source of their palm oil d) To the Indonesian Government Friends of the Earth demands that the Indonesian government undertakes the following actions with ... Acknowledgements The following people and organisations provided indispensable contributions to the realisation of this report: Robin Webster and Ed Matthew (Friends of the Earth England, Wales and Northern...

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Báo cáo khoa học: Effects of salt on the kinetics and thermodynamic stability of endonuclease I from Vibrio salmonicida and Vibrio cholerae potx

Ngày tải lên : 16/03/2014, 06:20

... study, the effect of NaCl concentration on the kinetic constants and thermodynamic stability of VsEndA and VcEndA was investigated In addition, the effects of reciprocal mutations of two non-conserved ... boundary conditions, and the resulting grid was adopted as the boundary condition for one further focused calculation The protein molecules occupied 90% of the box in the ﬁnal calculations The molecular ... conditions of the native enzymes [11] The denaturation peaks were symmetrical, except for some exothermic distortion of the thermograms after the denaturation peak, especially in the VcEndA sample...

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Báo cáo khoa học: Isothermal unfolding studies on the apo and holo forms of Plasmodium falciparum acyl carrier protein Role of the 4¢-phosphopantetheine group in the stability of the holo form of Plasmodium falciparum acyl carrier protein docx

Ngày tải lên : 16/03/2014, 10:20

... estimated on the basis of the linear regression of the fraction number of the molecular mass markers cytochrome c (CyC), carbonic anhydrase (CA), and BSA From the calibration curve of the sucrose ... the interaction of the 4Â-PP group with the polypeptide backbone and its effect on the stability of holo-ACP The average major conformation of the holo-ACP NMR structure was analyzed for ligandprotein ... states [24,25] These two states have been identied as the major and the minor forms of the holoACP structure, on the basis of their percentage contributions (65% and 35%, respectively) to the overall...

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Báo cáo khoa học: Effects of cardiomyopathic mutations on the biochemical and biophysical properties of the human a-tropomyosin docx

Ngày tải lên : 16/03/2014, 18:20

... charge of Tm The two other mutations (A63V and K70T) are located at the N-terminal region, far from the troponin binding region and occur at the g position of the repeat The K70T mutation also ... 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 ... stability of the mutant Tms The mutations did not affect the structure of the protein as there was no signiﬁcant alteration in the function or in the amount of the secondary structure However, the...

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influence of binders on the sensing and electrical characteristics of wo3-based gas sensors

Ngày tải lên : 20/03/2014, 13:04

... by changing the distribution of interface states and the electron occupation on them In some cases, even the concentration of the adsorbed gas ions can be measured from the change of potential ... adsorptionrdesorption kinetics of NO x gas region width, and e is the permittivity of the semiconductor From the charge neutrality condition between the interface charge Qi and the space charge in depletion ... binder reduces the sensitivity of WO :TiO film to NO x gas Table shows the response time and the recovery time of the samples in the same NO x gas concentration One can note that the samples fabricated...

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Báo cáo "Effects of Zn content on the magnetic and magnetocaloric properties of Ni-Zn ferrites " pdf

Ngày tải lên : 22/03/2014, 11:20

... frustration arising from the co-existence of competing antiferromagnetic and ferromagnetic interactions The separation of FC and ZFC curves at low temperatures could be considered that the sample ... in Fig 2, where ϕ is the angle between direction of magnetic moment of A ions and magnetic moment of B1 and B2 ions Comparing MSt and MSe from Tab 2, we could determine the canting angle between ... studied samples are nearly in saturation and saturation magnetization of samples is listed in Tab From the shape of measured M(T) curves, we should approximately suppose that these values correspond...

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Báo cáo khoa học: Effects of a tryptophanyl substitution on the structure and antimicrobial activity of C-terminally truncated gaegurin 4 doc

Ngày tải lên : 31/03/2014, 09:20

... with a 5-nm excitation and emission bandwidth, a 0.5-s response time, and a scan speed of 40 nmÆs)1 All samples contained lM peptide or the same concentration of NATA for control experiments, ... structures randomly showed a short a helical conformation in the C-terminal part The disordered conformation in the C-terminal region of D24)37 GGN4 is probably due to the break of the peptide bond at ... 3, the peptide adopts a typical amphipathic helix structure, with the hydrophobic residues on one side and the hydrophilic residues on the other side of the helical axis In particular, all of the...

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EFFECT OF STORAGE TEMPERATURES ON THE PHYSIOLOGICAL AND BIOCHEMICAL PROPERTIES OF HYLOCEREUS POLYRHIZUS

Ngày tải lên : 05/05/2014, 08:39

... (Bui et aI., 2004) There were studies that only compare the effect of drying methods alone (Chan et aI., 2009); and also study on the optimization of extraction conditions on herbs (Chirinos ... 2006) The antioxidant activity of the plant extract were affected by extraction solvents, the pH of the solvent used, extraction time used, temperature of extraction process and particle size of the ... optimization of both drying and extraction methods on herb had not being studied, the main ·objective of this study was to study the effect of extraction and drying methods on antioxidant activity on...

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effects of recognition versus disclosure on the structure and financial reporting of share based payments

Ngày tải lên : 03/06/2014, 01:05

... and financial reporting decisions in the context of recognition and disclosure Examples of the former include Imhoff and Thomas [1988] and Mittelstaedt, Nichols, and Regier [1995]; examples of ... in the terms of option contracts and for substitution towards other forms of compensation I focus primarily on changes in the number of option grants because these changes are likely to have the ... the largest impact on fair value For a sub-sample of firms with sufficient data, I also report changes to other terms of option contracts: the moneyness of options and the contractual length Where...

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báo cáo hóa học: " e differential mediating effects of pain and depression on the physical and mental dimension of quality of life in Hong Kong Chinese adults" pptx

Ngày tải lên : 18/06/2014, 19:20

... Kowloon Tong, Hong Kong 2Department of Social Work, Hong Kong Baptist University, Hong Kong 3Department of Community Medicine, The University of Hong Kong, Pokfulam, Hong Kong 13 14 Authors’ contributions ... article as: Wong et al.: The differential mediating effects of pain and depression on the physical and mental dimension of quality of life in Hong Kong Chinese adults Health and Quality of Life Outcomes ... population of Hong Kong Final report to the Health, Welfare and Food Bureau, Government of the Hong Kong Wong et al Health and Quality of Life Outcomes 2010, 8:1 http://www.hqlo.com/content/8/1/1...

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Báo cáo hóa học: " Effect of growth temperature on the morphology and phonon properties of InAs nanowires on Si substrates" doc

Ngày tải lên : 21/06/2014, 01:20

... 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 ... of the TO, SO, and LO phonon mode of InAs NWs confinement and the relaxation of q = selection rule However, the diameter of our InAs NWs is very large (> 20 nm) and shows almost no quantum confinement ... explain the observed downshift in phonon frequency of LO and TO phonon peaks Another one is the thermal anharmonicity effect caused by temperature change Anharmonicity entails the participation of...

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Báo cáo hóa học: "Effect of the carbon nanotube surface characteristics on the conductivity and dielectric constant of carbon nanotube/poly(vinylidene fluoride) composites" doc

Ngày tải lên : 21/06/2014, 04:20

... to the reduction of the surface conductivity of the CNTs due to the oxidation process [8], and is similar for all the functionalized composites Further, the increase of surface area due to the ... desorption (TPD) and determination of pH at the point of zero charge (pHPZC) from acid-base titration according to the method of the literature [11] The total amounts of CO and CO evolved from the samples ... dielectric constant at room temperature and 10 kHz for the PVDF/CNT original composites for a given concentration and a shift of the percolation threshold to higher concentrations On the other hand,...

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Báo cáo hóa học: " Effect of the Nd content on the structural and photoluminescence properties of silicon-rich silicon dioxide thin film" pdf

Ngày tải lên : 21/06/2014, 05:20

... 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 PL intensity of the broad visible PL band ... presents the evolution of the FTIR spectra of samples annealed at 1100 °C as a function of the Nd concentration One can observe that the LO band Page of intensity, which is constant at low Nd concentrations ... http://www.nanoscalereslett.com/content/6/1/161 Page of Figure Evolution of the FTIR spectra as a function of the Nd concentration centered at 29° This peak, and the 48° one, indicate the presence of nanocrystalline...

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Báo cáo hóa học: " Impacts of Post-metallisation Processes on the Electrical and Photovoltaic Properties of Si Quantum Dot Solar Cells" potx

Ngày tải lên : 21/06/2014, 07:20

... existence of localised Al shunts lying across the p-type and n-type regions as the annealing improves the contact of the Al shunts to both p- and n-regions of the cell thus shorting the cell more ... a clear demonstration that the electronic band gap of the nanostructured material is enhanced due to the quantum conﬁnement effect At present, the emphasis is on increasing Voc and the devices ... 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...

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Báo cáo hóa học: " Inﬂuence of Uniaxial Tensile Stress on the Mechanical and Piezoelectric Properties of Short-period Ferroelectric Superlattice " potx

Ngày tải lên : 22/06/2014, 00:20

... 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 ... supported by the conclusion of uniaxial tensile stress dependency of elastic constant c33 (see Fig 2b) Note that the polarization under uniaxial stress remains along the \001[ direction and that the piezoelectric ... superlattice under the loading of uniaxial tensile stress along the c axis becomes soft along the nonpolar axes To illustrate the change of chemical bonds with uniaxial tensile stress, Fig 3a and b are...

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Báo cáo hóa học: "Inﬂuence of Rare Earth Doping on the Structural and Catalytic Properties of Nanostructured Tin Oxide" docx

Ngày tải lên : 22/06/2014, 01:20

... modiﬁcation of the nanostructure and the basic sites of the particles Another phenomenon starts to occur on the surface of doped samples, a segregation process of particles of metastable solid solution, ... series of simultaneous reactions These reactions are more or less promoted depending on the nature of the catalyst, the type of interaction with the surface of the solid material, and the different ... 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 or ions on the surface of the solid [16]...

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Báo cáo hóa học: " Research Article On the Monotonicity and Log-Convexity of a Four-Parameter Homogeneous Mean" potx

Ngày tải lên : 22/06/2014, 02:20

... our notations and denote by HL p, q; a, b or HL p, q or HL Concerning the monotonicity and log-convexity of the two-parameter homogeneous functions, there are the following results Theorem 1.2 ... , and D x, y in Theorems 1.2 and 1.3, Corollaries 1.4 and 1.5, we can deduce some useful conclusions see 9, 10 These show the monotonicity and log-convexity of L x, y , A x, y , I x, y , and ... 1.5 The monotonicity of E r, s; x, y has been researched by Stolarsky , Leach and Sholander , and others also in 3–5 using diﬀerent ideas and simpler methods Qi studied the log-convexity of the...

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