structure and properties of chitosan

... with step angle of 0.030 , scanning rate of 0.04285 s−1 , and degree in range of 10–60 2.10 Mechanical Properties The mechanical properties (Young’s modulus and tensile strength) of PLA, PLA/md-HAp/PEO ... et al Effects of Porogen on Structure and Properties of PLA/HAp Nanocomposites (PLA/HAp) role in controlling the morphology of PLA/md-HAp/PEO nanocomposites With 20 wt% and 30 wt% of md-HAp, md-HAp ... porosity of the nanocomposite However, the high porosity of the nanocomposite was able to destroy the structure in size and reduced tensile properties of the nanocomposites In the case of low porogen

Ngày tải lên: 21/03/2017, 17:10

... - The synthesis of two nanostructured TiO2 photocatalyst materials (N-TiO2/Al2O3 and HA/N-TiO2) - Characterization of the structure, properties and composition of N-TiO2/Al2O3 and HA/N-TiO2 - ... CHARACTERIZATION OF STRUCTURE AND PROPERTIES OF TiO2-BASED NANOCOMPOSITE FOR THE TREATMENT OF SOME POLLUTANTS IN AIR ENVIROMENT Major: Theoretical Chemistry - Physical Chemistry Code: 62.44.01.19 ABSTRACT OF ... University of Science and Technology, Vietnam Academy of Science and Technology Time: Date… month … 2018 This thesis can be found at: - The library of Graduate University of Science and Technology;

Ngày tải lên: 10/01/2020, 06:43

... graphene (G-band), respectively [44] The intensity of D-band is stronger than that of G-band, meaning the presence of high density of defects and structure disorder in GO Moreover, the ID/IG intensity ... N-doping on the structural and photoluminescence properties of graphene oxide films, Carbon 50 (2012) 3799–3806 158 Effect of temperature on the structure and properties of Fe2O3/graphene nanocomposites… ... the disorder band associated with structural defects, amorphous carbon created in graphene (D-band) and well ordered scattering of the E2g phonon of sp2 C atoms of graphene (G-band), respectively

Ngày tải lên: 13/01/2020, 06:05

... helices A V and B V at the surface of domain V. Gly621 and Gly617 are in the area of contact with the 1095 and 2473 regions of 23S RNA. The two helices are facing the ribosome, and the four-stranded ... thermophilus EF-G structures, wild type and various mutants, domains III, IV and V display a movement relative to domains I and II, resulting in a shift of the tip of domain IV of up to 8 A ˚ [14,16]. ... in the apo structure of T. thermophilus EF-G [13], and upon crystal soaking with GDP, partial occu- pancy of the peptide-flipped structure is observed, in agreement with structures of T. thermophilus

Ngày tải lên: 06/03/2014, 22:21

... struc- tures of these proteins, all tetrameric, showed signifi- cant similarity to the published structures of transthyretin. By way of example, a comparison of the structure of S. dublin TLP with the structures ... Interruptions in the b-strands A, G and H are also observed in TLP structures as a result of alterations to the formation of hydrogen bonds between strands. The carbonyls of residues V104 and P105 (zebrafish ... dublin TLP and zebrafish TLP are found in the flex- ible portions of strands B and C that protrude towards the solvent and in the conformation of the long loop connecting strands D and E [17].

Ngày tải lên: 07/03/2014, 00:20

... comparison of part of the protein backbone structure of the representative solution structure of the human eRF1 M domain and the Ca trace in the crystal structure of ... Structure and dynamics in solution of the. .. angles / and w were derived from the values of 13 Ca, 13 Cb, 13 C¢, 1Ha 1HN and 15 N NMR structure and dynamics of ... segments of the crystal structure on the equivalent segments of each member of the family of the solution structure of the M domain of human eRF1. The resulting rmsd values (y-axis) and their deviations

Ngày tải lên: 07/03/2014, 05:20

... which the b1-strand and b2-strand are adjacent and parallel to each other, and the b¢-strand is adja- cent and antiparallel to the b1-strand (Fig. 1). The length and sequence of the variable ... a1-helix and a2- helix and the b2-strand of KH1. Intimate contacts between protein and RNA continue across the cusp of the KH1 and KH2 domains. C46 binds to the Fig. 6. Crystal structures of the ... and the edge of the b2-strand), where it con- tacts both the invariant GXXG motif and the variable loop. Nucleic acid binding by tandem but independent KH domains – NMR structure of the KH3 and

Ngày tải lên: 07/03/2014, 05:20

... a-helices. Residues involved in binding of the cofactor ThDP are located at the C-terminal ends of the b-strands of Dom-c (diphosphates and Mg 2+ ) and of Dom-a¢ of a neighbouring subunit (pyrimidine moiety). ... crystal structure of BAL with bound cofac- tor ThDP at 2.6 A ˚ resolution, suggest the geometry of the reaction and explain the substrate specificity in structural terms. Results and Discussion Structure ... pathways and catalyse a broad range of reactions mainly involving the cleavage and the formation of C–C-bonds. For instance, they catalyse nonoxidative and oxidative de- carboxylations of 2-ketoacids,

Ngày tải lên: 07/03/2014, 12:20

... Origin and properties of cytoplasmic and mitochondrial isoforms of taurocyamine kinase Kouji Uda 1 , Naoto Saishoji 1 , Shuichi Ichinari 1 , W. Ross Ellington 2 and Tomohiko Suzuki 1 1 Laboratory of ... lombricine (30% of that of taurocyam- ine) and glycocyamine (7% of that of taurocyamine). Neither TK catalyzed the phosphorylation of creatine. Comparison of the deduced amino acid sequences of mitochondrial ... correlations of this relaxed sub- strate specificity and the possibility of cytoplasmic and mitochondrial isoforms of TK, we have amplified two cDNAs coding for Arenicola brasiliensis TKs and cloned

Ngày tải lên: 07/03/2014, 21:20

... mixture of 0.05 M NaP i buffer, pH 3, and acetonitrile (6 : 1, v/v); separation was performed isocratically, at a flow rate of 1mLÆmin )1 , and the volume of injected samples was 10 lL. The amounts of ... 1. Molecular structures of the hydroxybenzoic acid (I, II) and hydroxycinnamic acid (III, IV) derivatives assayed as substrates for the flavonoid 4¢-OMT. Fig. 2. Molecular structures of the flavones (V-XII) ... the method of Baayen and Elgersma [13], with a 500-lLdropofFod conidial suspension at a concentration of 9 · 10 6 conidiaÆmL )1 ;20 additional plants, inoculated with a 500-lL drop of double distilled

Ngày tải lên: 08/03/2014, 08:20

... lg of platelet protein and 0.5 lg of GST and GST±Rab p roteins; (B) an [a- 32 P]GTP overlay [17] of a nitrocellulose blot of a gel containing 40 lg of platelet protein, 0.5 lgofGSTand0.5lgofGST±Rab proteins, ... GST±Rab31 and Fig. 7. Puri®cation and properties o f wild-type and mutant Rab31 and Rab32 expressed a s GST±fusion proteins. Samples of platelet particu- late fraction protein and of puri®ed GST and ... expression and properties of Rab31 and Rab32 New blood platelet Rab proteins Xiankun Bao 1 , Andrea E. Faris 2 , Elliott K. Jang 1 and Richard J. Haslam 1,2 Departments of 1 Pathology and Molecular

Ngày tải lên: 08/03/2014, 16:20

... overlap and are closely linked so that the form and structure of the plant evolves as the integration of many consecutive and interacting processes 25 CHAPTER – THE STRUCTURE AND DEVELOPMENT OF THE ... sheath sheath node internode Detailed structure of the stem and leaf of the wheat plant 27 CHAPTER – THE STRUCTURE AND DEVELOPMENT OF THE CEREAL PLANT DESCRIPTION OF THE WHEAT PLANT THE WHEAT BOOK ... parts of a leaf are the tip of the blade and the top of the sheath Where the blade and sheath join, there are structures called the ligule and the auricles (Figure 2.3) Characteristics of the

Ngày tải lên: 08/03/2014, 23:20

... collected at 300 K of single CCP1 and CCP2 and of pair of modules at neutral and acidic pH Doc S1 Intermodule cooperativity in the structure and dynamics of consecutive. ... mainly the b-strands. The loops between strands B and C, known as the ‘hypervariable loop‘, D and E, E and F, F and G, and G and H are particularly tolerant of longer insertions [19]. In multimodular ... with aspartate and ⁄ or glutamate residues. In the light of atomic structures of CCP1 and CCP2 (2qy0 [36] and 1gpz [37]), this perturbation might indicate that in CCP1, the side chain of H335 is fully

Ngày tải lên: 15/03/2014, 23:20

... residues of Ile10–Phe18 The intensities of the Ha-HN cross-peaks of Thr11, Ile12 and Thr15 were drastically reduced, and Asp14 completely disappeared in Ó FEBS 2004 Structure and topology of TM4 of ... Lee, B.J (2002) Role of proline, cysteine and a disulphide bridge in the Ó FEBS 2004 Structure and topology of TM4 of DMT1 (Eur J Biochem 271) 1951 structure and activity of the anti-microbial ... scan rate of 50 nmỈmin)1 with a respond time of 0.25 s, step resolution of 0.1 nm and band width of nm Each spectrum was obtained from the average of four scans Prior to calculation of final ellipiticity,

Ngày tải lên: 16/03/2014, 16:20

... the effect of a mutation in this part of the molecule on the structure and properties of human sHsp Oligomeric structure of HSP22 and its mutants All samples of recombinant HSP22 and its mutants ... importance of this part of molecule of the sHsp is supported by the fact that mutations in the loop connecting the b5 and b7 strands, or in the b7 strand of sHsp, often correlate with the development of ... domain of human sHsp lacks the b6 strand detected in the structure of Hsp16.5 of M jannaschii and wheat Hsp16.9 and the loop connecting b5 and b7 is much shorter than the corresponding loop of bacterial...

Ngày tải lên: 23/03/2014, 07:20

... semiconductor superlattices of high quality Use of a beam of clusters, instead of atoms, would allow the production of more complex superstructures 10 Structure and Properties ofAtomic Ciusiers 2.2 ... series of experimental and theoretical studies of their structure and properties The existence of especially stable clusters is sometimes advocated to construct models of amorphous materials Structure ... consists of the reduction of Fe2+ and Nd3+ salts using borohydride ions in aqueous solution The concentration and speed of addition of the reactants, the control of the pH, the temperature and the...

Ngày tải lên: 04/06/2014, 14:33

... on investigating the microstructure of the PZT thin films and the correlation between the structure and performance properties of the PZT films The early growth stage of the PZT film on SrTiO3 ... None of this would be possible without their love and concern ii Table of Contents Page Acknowledgements i Table of Contents iii Summary vi List of Publications ix List of Figures x List of Tables ... represents any of the three coordinates x, y and z, and εο is the 10 Chapter Introduction permittivity of free space In most piezoelectric materials, D and P are non-linear functions of E and depend...

Ngày tải lên: 16/09/2015, 08:31

... and structure of NaCl How bonding and structure influence the general properties of the substance? TO PREVIOUS SLIDE Answer on the next slide UNIT Chapter 4: Chemical Bonding and Properties of ... Bonding and Properties of Matter Chapter 4: Chemical Bonding and Properties of Matter The chemical bonding in a substance influences the shape of its molecules, and molecular shape influences the properties ... Bonding and Properties of Section 4.2 Matter Depicting Two-Dimensional Structures of Molecules with Lewis Structures TO PREVIOUS SLIDE UNIT Chapter 4: Chemical Bonding and Properties of Section...

Ngày tải lên: 01/12/2015, 22:44

... Analysis Software package, using a non-linear MarquardteLevenberg algorithm Results and discussion 3.1 Structure and characterizations of A-SSBR 3.1.1 Mechanism and physics of structure formation of ... G0 -ε% and tand-ε% curves of vulcanizates (60  C) improve the silica-rubber linkage and silica dispersion in rubber matrix From tand-ε% curve, tand value of 1# vulcanizate is the highest and increases ... was the weight of filler and gel, Wt was the weight of sample, mf was the fraction of filler in the compound, and mr was the fraction of rubber in the compound 2.4.11 Rheological properties The...

Ngày tải lên: 11/06/2016, 22:43

... Which structures determine the unique functions of these avin proteins? In this study, we present the crystal structure of DvMF avoredoxin and discuss the key residues for ligand binding and metal ... Fig Structures of avoredoxin and other related proteins (A) Overall structure of the avoredoxin dimer Each subunit is shown in greencyan and violetred models FMN molecules are depicted as ball -and- stick ... conserved Structure of the FMN-binding region The hydrogen bonds and salt bridge that encompass the ribitol moiety and the phosphate group of FeR and M acetivorans avoredoxin are moderately and completely...

Ngày tải lên: 07/03/2014, 02:20