identification quantitative determination and antioxidant properties of polyphenols of some malian medicinal plant parts used in folk medicine
Tài liệu Báo cáo Y học: Short peptides are not reliable models of thermodynamic and kinetic properties of the N-terminal metal binding site in serum albumin doc
... Ni(II) exchange by albumin, we characterized the binding parameters and performed parallel kinetic studies using HSA and BSA and three simple analogues of the N-terminal binding site These were: ... Ni(II) binding to DAHKam and HSA at pH 7.4 in 100 mM phosphate buer Left panel, kinetic plots (d, experimental points constructed by adding intensities at extremes of dd bands, 475 and 410 nm, lines ... neighbouring His242) bind phosphate ions, thereby providing another level of competition for metal ion binding Kinetics of Ni(II) binding and Cu(II)/Ni(II) exchange The data presented in Table...
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Báo cáo hóa học: "GEOMETRIC AND APPROXIMATION PROPERTIES OF SOME SINGULAR INTEGRALS IN THE UNIT DISK" doc
... The reasonings in the case of Wξ ( f )(z) are similar The proof of continuity on D of Wξ ( f ) and Wξ∗ ( f ) is similar to that for Pξ ( f ) in the proof of Theorem 2.1(i) ∗ It remains to prove ... (3.7) ∗ The continuity of f on D implies the continuity of Qξ ( f ), Qξ ( f ), and Rξ ( f ) as in the proof of Theorem 2.1(i) for Pξ ( f ) ∗ It remains to show that b1 (ξ) > and b1 (ξ) = e−ξ ... Geometric and approximate properties of convolution polynomials in the unit disk, Bul[5] letin of the Institute of Mathematics Academia Sinica (2006), no 2, 307–336 [6] P T Mocanu, T Bulboaca, and...
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Báo cáo y học: "Antimicrobial and antioxidant activities of Cortex Magnoliae Officinalis and some other medicinal plants commonly used in South-East Asia" doc
... vomiting, burses and dropsy Treatment of insomnia and strengthening of bones Chinese houttuynia or chameleon plant/ Yuxingcao Detoxification, treatment of infection, removing toxic heat, promoting ... University of Singapore Our appreciation is extended to Ms Ooi Shing Ming for her assistance in experiments, Prof Baolin Guo, Herbarium of the Institute of Medicinal Plant Development (IMPLAD) of the ... used as medicinal plants (3) They Table 1: Ethnomedicinal uses and properties of the selected plants Latin pharmaceutical name/ Plant scientific name/Family/ Voucher specimen no Vernacular/pinyin...
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Báo cáo lâm nghiệp: "Antioxidant properties of wood extracts and colour stability of woods" pps
... solar-type irradiation, and examine links between colour stability of a wood and antioxidant capacity of its extracts MATERIALS AND METHODS 2.1 Chemicals, industrial extracts, and wood samples Reagents ... Perrin D., Martin R., Kinetic study of the thermal oxidation of all-trans-β-carotène and evidence of its antioxigen properties, New J Chem 19 (1995) 863–872 [9] El Oualja H., Perrin D., Martin ... chosen time in the presence and in the absence of the extract We call this antioxidant capacity index OUI, for “Oxygen Uptake Inhibition”; it should spread from to 100%, for poor and strong antioxidants,...
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Electronic and Optoelectronic Properties of Semiconductor Structures
... SURVEY OF ADVANCES IN SEMICONDUCTOR PHYSICS In Fig I.1 we show an overview of progress in semiconductor physics and devices, since the initial understanding of the band theory in the 1930s In this ... 351 9.4 INTERBAND TRANSITIONS 9.4.1 Interband Transitions in Bulk Semiconductors 9.4.2 Interband Transitions in Quantum Wells 358 358 361 9.5 INDIRECT INTERBAND TRANSITIONS 364 9.6 INTRABAND TRANSITIONS ... semiconductors, insulators lecture • Tight binding method Spin-orbit effects, symmetry of states k • p method Intrinsic and extrinsic carrier densities lecture • Bandstructure of alloys lecture • Bandstructure...
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Tài liệu Báo cáo " The effect of cobalt substitution on structure and magnetic properties of nickel ferrite " pptx
... Co-concentration led to the increasing of anisotropy property of ferrites Ni1-xCoxFe2O4, hence it was the increasing of HC The increasing of HC proved that the soft magnetic property of ferrite NiFe2O4 ... increasing of MS (table 3) Another side, it is known that the magnetizing process of hard ferrite consisting of single domain particles is the rotation process of magnetization vectors of domain, ... x increased this leads to the compensation of ion Fe3+ in the tetrahedral and octahedral location That led to increasing of total magnetization of a molecule Ni1-xCoxFe2O4 and hence there is increasing...
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Tài liệu Báo cáo khoa học: Interleukin-1-inducible MCPIP protein has structural and functional properties of RNase and participates in degradation of IL-1b mRNA doc
... E185, D226, D244) in PIN domains involved in binding Mg2+ ions are conserved in all three sequences Other conserved residues are R263, V139 and N144 Determination of the MCPIP domain architecture ... proteins interacting with MCPIP will clarify the dynamics and features of this protein Role of MCPIP in regulation of the endogenous IL-1b transcript level After identification of a PIN domain in the ... amino acids located within the PIN domain (D141A and D226A) Transcription was inhibited by addition of actinomycin D, and RNA was collected after 3, and h The mRNA level for IL-1b (top panel) and...
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Tài liệu Báo cáo khoa học: The antibacterial and antifungal properties of trappin-2 (pre-elafin) do not depend on its protease inhibitory function pptx
... phosphate buffer containing 0.3 m NaCl Heparin binding assays The heparin-binding capacities of trappin-2 and elafin were assessed by affinity chromatography using heparinSepharose Trappin-2 or elafin ( ... analysis of elafin and trappin-2 fractionated on heparin-Sepharose The heparin-binding capacities of elafin and trappin-2 were evaluated by affinity chromatography using heparinSepharose Elafin or trappin-2 ... the N-terminal cementoin domain and the C-terminal elafin domain very efficiently in vitro [7] The 38 residue N-terminal domain of trappin-2 has a unique structural feature in that it contains several...
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Tài liệu Báo cáo khoa học: Tryptophan tryptophylquinone cofactor biogenesis in the aromatic amine dehydrogenase of Alcaligenes faecalis Cofactor assembly and catalytic properties of recombinant enzyme expressed in Paracoccus denitrificans pptx
... The lack of inhibition observed with benzylamine (Fig 5A) in comparison to the inhibition observed with tryptamine (Fig 5B) suggests differences in binding of the two substrates within the active ... is < 6% of the determined value Kinetic and thermodynamic parameters were obtained from fitting data to the Eyring equation sion of AADH, A faecalis and P denitrificans were cultured in minimal ... each containing 1000 data points The absorbance changes accompanying enzyme reduction with benzylamine were monophasic, and observed rates were obtained by fitting using the standard single exponential...
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Tài liệu Báo cáo Y học: Antibacterial and antifungal properties of a-helical, cationic peptides in the venom of scorpions from southern Africa pptx
... opistoporin and pandinin are the hydrophobicity (pandinin 1–0.1214, opistoporin 1–0.1652) and the hydrophobic moment, which is nearly double for pandinin (pandinin 0.1071, opistoporin 0.055) The amino ... alignments of opistoporins, parabutoporin, pandinin 1, hadrurin and BmKBpp showing the conserved amino acid residues in bold The amino acid difference between opistoporin and is underlined *, identical ... of parabutoporin, opistoporin, melittin and mastoparan in absence and presence of mM extracellular Mg2+ ions Bacteria were incubated with twofold serial dilutions of peptides and inhibition of...
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Tài liệu PHYSICAL, CHEMICAL, AND MECHANICAL PROPERTIES OF BAMBOO AND ITS UTILIZATION POTENTIAL FOR FIBERBOARD MANUFACTURING docx
... hemicellulose and lignin in immature bamboo increased while proceeding downward of the culm The increase of cellulose in the lower position was also accompanied by an increase in crystallinity The culm of ... bending properties of bamboo is mainly due to the increase in SG during its growth and maturation The correlation between SG and MOR and MOE of bamboo is plotted in Figure 3-8 Table 3-4 SG and ... content, SG, and bending properties, along longitudinal and radial directions of one, three, and five year old bamboo and determine the correlation between SG and bending properties, and (5) compressive...
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Báo cáo " Study on the characteristics and catalytic properties of Pt/SBA-15 in the selective oxidation of D-Glucose " potx
... content of Pt was determined again by EDX method after reducing platinum salt with NaBH4 Figure of PS-1 (1% Pt/ SBA-15) sample displays typical peaks of Si and Pt and the result from the quantitative ... formation of gluconolactone and disaccharide and inhibited the catalyst activity [2] So, we should add alkaline solution continuously to maintain pH value at during the oxidation process In table ... selectivity in the oxidation of glucose When increasing the content of Pt loading, most Pt nanoparticles aggregated outside the channels of SBA-15 with size of 10-15nm and catalytic activities of these...
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Báo cáo khoa học: Ibuprofen binding to secondary sites allosterically modulates the spectroscopic and catalytic properties of human serum heme–albumin doc
... ẵibuprofenịị ỵ kỵ off 7ị where koff(2) and koff(3) indicate values of koff occurring at K2 < [ibuprofen] < K3, and at K2 < K3 < [ibuprofen], respectively, and kỵ is the koff value obtained in the off ... ibuprofen in tHSA), but also to the FA7 cleft (corresponding to the warfarin pocket) [17], thus inducing mixed effects, combining the actions of ibuprofen and warfarin [8] It is worth noting that ... dependence of koff on the free ibuprofen concentration Values of K2 and K3 were determined from data analysis, according to Eqn (7) [20]: koff ẳ koff2ị ẵibuprofen=K2 ẵibuprofenị ỵ koff3ị ẵibuprofen=K3...
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Báo cáo khoa học: Crystal structure and enzymatic properties of a bacterial family 19 chitinase reveal differences from plant enzymes pdf
... N-terminal chitin-binding domain ChiG, on the other hand, lacks this chitin-binding domain, and consists only of a catalytic domain [22] The chiG gene encodes a 244 amino acid chitinase, including ... ‘stored’ in the autoinjector) Analyses of the degradation of a-chitin and b-chitin were conducted by incubating 100 lL solutions containing mgÆmL)1 of b-chitin (squid pen b-chitin, lm in size; ... (2002) Functional analysis of the chitin-binding domain of a family 19 chitinase from Streptomyces griseus HUT6037: substrate-binding affinity and cis-dominant increase of antifungal function Biosci...
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Báo cáo khoa học: Spectroscopic and kinetic properties of the horseradish peroxidase mutant T171S Evidence for selective effects on the reduced state of the enzyme potx
... demonstrated the sensitivity of the proximal region in determining the electronic and structural properties of the haem pocket In the present study we attempt to obtain further insights into the extent to ... ligated into the expression vector pFLAG1 at the unique NdeI and BglII sites Expression of HRPC in E coli W31110, isolation of inclusion bodies, refolding and purication of the wild-type protein and ... of the remaining bands in the RR spectrum, which are unaffected by the pH, are assigned by analogy to myoglobin and cytochrome c peroxidase (CCP) [22,23] to out -of- plane modes of the porphyrin...
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Báo cáo Y học: Purification and biochemical characterization of some of the properties of recombinant human kynureninase pptx
... flow rate of 1.5 mLÆmin)1 The enzyme was eluted in the unbound fraction devoid of any PLP Concentration and equilibration of fractions containing active kynureninase during this step and elsewhere ... initiation of the reaction Graphs were plotted using the CRICKETGRAPH and GraphPad PRISM3 software packages, and the kinetic parameters Km and Vmax were obtained using non-linear regression Lineweaver–Burk ... (Sf9) insect cells [11] Sf9 cells were grown at 28 °C in TC-100 suspension cultures of 10 L containing a minimal amount of fetal calf serum (1–2%) until 10 mL of growing cells resulted in a confluent...
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Báo cáo khoa học: Ligand binding and antigenic properties of a human neonatal Fc receptor with mutation of two unpaired cysteine residues docx
... activity of mutant shFcRn, as shown by characteristic pH-dependent binding to both ligands In addition, no binding to murine IgG1, and only weak binding to murine IgG2b at pH 6.0, was observed, and ... pH-dependent binding of IgG and albumin to shFcRn, implies that antibodies were generated that recognized either of the ligand-binding sites located in the a2 domain Thus, the antigenic properties of the ... shFcRn By fitting the binding data to this model, the derived binding kinetic rates for binding to the first ligand (one side of the Fc with immobilized shFcRn) is described by a single set of rate...
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Preparation and photoluminescence properties of amorphous silica nanowires
... pellets were placed at the center of conventional horizontal furnace with a sintered alumina tube (U2:5 cm  100 cm) and calcined at 1350°C for h in ¯owing argon (40 ml/min) A white product was found ... nanowires [17] The growth of the nanowires Fig XPS of the sample (a) survey spectrum of the sample; (b) Si2p binding energy spectrum; (c) O1s binding energy spectrum Fig PL spectrum of the SiONWs at room ... further divided into monocentric and polycentric nucleation, and growth step into periodic stable growth and periodic unstable growth [19] Thus the combination of dierent nucleation and growth processes...
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Effects of simultaneous doping with boron and phosphorous on the structural, electronic and optical properties of silicon nanostructures
... effects of size and shape of Si-nc on the incorporation of group-III (B and Al), group-IV (C and Ge) and group-V (N and P) impurities Single-doping has been investigated both in spherical and faceted-like ... peak Multidoping In this section, we will study how the FE and the electronic properties of the Si-nc are in uenced by the insertion of more and more impurities We call this insertion of several ... value (1.13 and 0.66 eV for the single B- and P-doped nanowire, respectively), thus confirming the stabilizing role of compensated doping Concerning the electronic properties, the band structure...
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Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide
... clusters consisting of high density of nanowires The magnified view of a single cluster is depicted in the inset of Fig 2(d) These observations suggest that growth of nanowires in the present process ... diffusion of Si/SiOx vapors into the metal particles, (ii) formation of liquid droplet of metal and Si/SiOx and (iii) the precipitation in the form of solid nanowires after super-saturation of liquid ... position at 393 nm ($3.15 eV) The PL properties of silica nanowires have been investigated before showing single or two PL bands depending on their structural properties [5,7,24] For example, Yu...
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