characterization of chitin and chitosan

... Trang 1CHARACTERIZATION OF ELECTROMAGNETIC AND LIGHTSCATTERING BY NANO-SCALED OBJECTS SHE HAOYUAN B Eng, Harbin Institute of Technology, 2005 Submitted for the degree of PhD of Engineering ... measurements and detailed band-structure calculations for Ag and Cu [4,5] Effects of the stress on the optical constants are shown in [6] for Cu, [7] for Ag and [7–9] for Alloys The optical properties of ... Christymeasured the optical constants of copper, silver and gold with an oblique-incidencethin-film technique [14] and measurements of copper and nickel as a function oftemperature were also shown [13]...

Ngày tải lên: 12/09/2015, 09:55

... organization and dense structure was observed clearly fora-chitin, whereas the surface of b-chitin appears less crystalline and different froma-chitin 3.3 Deacetylation of chitin 3.3.1 Preparation of chitosan ... betweena-chitin and b-chitin (i) Due to the different arrangement betweena-chitin and b-chitin, amide I band ina-chitin spectrum splits at 1660 cm1which is attributed to the occurrence of intermolecular ... Spectra of b-chitin from CH-Cut anda-chitin from CH-TP are shown inFig 1A and B, respectively Different patterns occur in thea-chitin and b-chitin The differences in the IR spectra of chitin can...

Ngày tải lên: 25/08/2016, 11:21

... levels of transfection Lavertu et al studied several combinations of Mw and DA of chitosan finding two combinations of high transfection efficiency using a chitosan of 10 kDa and DD of 92 and ... origin of the samples but also to their method of preparation Chitin and chitosan are used in fields as different as food, biomedicine and agriculture, among others The success of chitin and chitosan ... formation of connective tissue [120] Recently, the effects of chitin and chitosan oligomers and monomers on wound healing have been studied [121] This study shows that in addition to chitin and chitosan,...

Ngày tải lên: 25/08/2016, 11:35

... head and shell of shrimp (size of 81-120 bodies/kg): 25.6 % to 32 % dry weight, respectively, the chitin and protein contents of head and shell are largely different The chitin content of shell and ... amount of Tyr, Phe, Leu and Val of head and shell part were higher than that of meat one The contents of K and Cu in the shell and head were nearly the same whereas the contents of Na, Ca and Fe ... fishmeal and chitin were produced This way of treatment caused the recovery of useful compounds to be lost the efficiency and to pollute environment concurrently The industry of chitin and chitosan...

Ngày tải lên: 15/08/2015, 22:14

... spectrum of chitosan, the absorption bands of the amide I, amide II, and glycosidic bonds appeared at 1650, 1597, and 1080 cm−1, respectively.19 The spectrum of pristine laponite RD showed a strong and ... magnet (insert of Figure 4) 2.2.1 Effect of contact time The rate of metal ions uptake is one of the most important characteristics of adsorbents The effect of contact time on removal of Cu2+ ions ... were studied 2 Results and discussion 2.1 Synthesis and characterization The possible mechanism for grafting acrylonitrile on chitosan is based on the fact that Ce4+ and chitosan form a redox-initiation...

Ngày tải lên: 13/01/2022, 00:18

... concentrations of 5PR and 4PE were determined by mea-suring the concentration of organic phosphate [27], 6PG and NADP were determined enzymatically, and the concen-trations of aPyADP and NADPH were ... was placed in the stirred cell and titrated with a total of 23 injections of 10 lL of ligand, at 380 s intervals An initial preinjection of 5 lL volume was made, and the result from this injec-tion ... coenzyme, or both NADP and substrate, 6PGDH was titrated with 6PG and 4PE in the presence of satu-rating concentrations of aPyADP and NADP, respec-tively The titration of the enzyme–aPyADP complex...

Ngày tải lên: 07/03/2014, 05:20

... two AP monomers of AP together [32] In a vari-ety of human cancer cell lines and sera, the Kasahara AP isoform has been found to consist of heterodimers of hIAP and hPLAP [33,34], and the human ... one rIAP band, with an apparent molecular mass of 70 kDa, was present, but two bands of 88 kDa and 75 kDa were detected as rIAP-II and rIAP-I in the duodenum The molecular mass values of the rIAPs ... heterodimers of hIAP and hPLAP [35] Ovarian cancer cells and cell lines derived from these cells express heterodimers of hPLAP and hGCAP [36–38] While no heterodimers of rIAP-I and rIAP-II have...

Ngày tải lên: 07/03/2014, 17:20

... cerevisiae and E coli the side chains are comprised of six and eight isoprene units, respectively, whereas the side chain in mice and C elegans has nine units and that in S pombe and humans has ... mDLP1 and hDLP1 are homologs of SpDlp1 We also showed that both components are involved in determination of the isoprenoid chain length of ubiqui-none Results Isolation and sequence analysis of ... murine and human SpDps1homologs were denoted as mSPS1 and hDPS1, respectively The murine and human SpDlp1 homologs were denoted as mDLP1 and hDLP1, respectively The open reading frames of mSPS1 and...

Ngày tải lên: 16/03/2014, 23:20

... prolifera- tive and differentiation state, basal level of ERK1 ⁄ 2 and Akt kinase phosphorylation, and P2Y 1 and P2Y 12 receptor protein expression and functional activity. Examination of the effects of specific ... Jolanta Baran ´ ska Department of Molecular and Cellular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland The focus of this study is glioma C6 cells, ... G 1 , 25% in G 2 ⁄ M, and 15% in S phase. After 24 and 48 h of serum starvation,  80% and 90% of cells were growth arrested, respectively. However, there were still a number of unsynchronized cells,...

Ngày tải lên: 30/03/2014, 08:20

... involvement of the PTP in the D phase Accurate analysis of images also excluded the occurrence of mitochondrial swelling, a marker of permeability transition The duration of D and R phases was 1.05 and ... autofluo-rescence of plastic film, using the same optical settings and meth-ods applied to mitochondria The max height and max width of derivative peaks of noise fluctuations were set as cut-off ... (activator of purinergic receptors and the IP3 pathway) given at the time of acquisition of images Drug combinations (aurovertin and oligomycin, rotenone and olygomycin, rotenone and SAD) were...

Ngày tải lên: 30/03/2014, 16:20

... spectroscopy of semiconductor and polymer surfaces, variable-temperature STWSTS of semiconductor interfaces, and the characterization of the geometric and electronic structure of diamond films with STM and ... BlankTrang 12Biography Professor DiNardo is Associate Professor of Physics at Drexel University and Adjunct Associate Professor of Materials Science and Engineering at the University of Pennsylvania He ... BlankTrang 14Nanoscale Characterization of Surfaces and Interfaces N John DiNardo Department of Physics and Atmospheric Science Drexel University Philadelphia PA U.S.A List of Symbols and Abbreviations...

Ngày tải lên: 04/06/2014, 14:38

... palisading structure of the intimal lining cells and the presence of non-foreign-body-type giant cells, formation of lymphoid follicles, and massive accumulation of plasma cells and macrophages [1] ... features typical of early RA [4-6] Therefore, stud-ies of potential molecular changes in the synovium of patients with early RA may improve our understanding of this disease entity and aid diagnosis ... sensitivity to drugs, and prog-nosis [11,12] The use of these techniques to study the his-topathogenesis of the initial step of synovitis in RA and its progression should improve our understanding at the...

Ngày tải lên: 09/08/2014, 06:23

... sequencing technology for isolation of SSR markers and characterization of gene content Results and Discussion Shotgun sequencing of Vigna radiata genome Sequencing of Vigna radiata genomic DNA was ... markers and characterization of putative genes using shotgun genome sequences of Vigna radiata A sig-nificance of the results from this study is that high-throughput shotgun sequences of mungbean ... manuscript PS, WS and WM prepared plant materials and performed genetic analysis DS participated in library construction and sequencing PU and JC participated in analysis of the results PS and ST participated...

Ngày tải lên: 12/08/2014, 03:21

... University School of Medicine and University Hospitals of Cleveland, Cleveland, OH 44106, USA † Institute for Genome Sciences and Policy and Department of Molecular Genetics and Microbiology, ... properly cited. Assembly and characterization of heterochromatin and euchromatin on human artificial chromosomes <p>An assay of the formation of heterochromatin and euchromatin on de novo ... understand the contribution of non-coding sequences to higher-order genome structure and stability Maintenance of genome integrity and the faithful transmis-sion of genetic information in mitosis and...

Ngày tải lên: 14/08/2014, 14:21

... 1AND THE EFFECTS OF MECHANICAL PROPERTIES OF EXTRACELLULAR MATRIX ON CELL BEHAVIORS WONG LONG HUI Trang 2MECHANICAL CHARACTERIZATION OF BIOPOLYMER AND THE EFFECTS OF MECHANICAL PROPERTIES OF ... were done at 𝜔 of 1 rad/s 𝐺0′ and 𝐺0′′ denote the 𝐺′ and 𝐺′′ values obtained at 𝛾0 of 1% 49 Figure 2.9: Comparison between rheological results of uncross-linked (open circles) and and cross-linked ... ii Publications iv Conferences vi List of Awards viii Table of Contents ix Summary xiv List of Tables xvi List of Figures xvii List of Symbols and Abbreviations xxiv Chapter 1 : Introduction...

Ngày tải lên: 09/09/2015, 11:28

... degree of Doctor of Philosophy in the Department of Mechanical Engineering, National University of Singapore (NUS) under the supervision of Associate Professor Zeng Kaiyang To the best of my knowledge, ... hysteresis loop Forward and reverse coercive voltages, V+ and V−, nucleation voltages V c+ andV c−, and forward and reverse saturation and remnant responses,R0+,R0−,R s+ and R s−, are shown Also ... Abdul and Mr Maung Aye Thein, for their assistance in my experimental work inside the lab I would also like to thanks Prof John Wang and Prof Ding Jun at Department of Material Science and Engineering...

Ngày tải lên: 10/09/2015, 08:41

... 1CELLULAR AND MOLECULAR CONTROL OF SKELETON FORMATION IN FISH: INSIGHTS FROM OSTEOBLAST ABLATION AND FUNCTIONAL CHARACTERIZATION OF LRP5 AND SOST BERND WILLEMS (Diplombiologe, University of Cologne) ... latipes) and zebrafish (Danio rerio), to gain better understanding of the cellular and molecular processes involved in skeletal development To examine the role of osteoblasts in development of the ... Regeneration of ablated osx:CFP-NTR cells Fig 10 Lrp5 and Sost are conserved at the sequence level Fig 11 Early embryonic expression of lrp5 and sost Fig 12 lrp5 and sost expression at 24 and 48...

Ngày tải lên: 10/09/2015, 08:43

... Trang 1Growth and Characterization of Germanium and Silicon Nanostructures Huang Jinquan A Thesis Submitted for the Degree of Doctor of Philosophy Department of Electrical and Computer Engineering ... exploration of self-assembled synthesis and the possible applications of new Si and/or Ge nanostructures and, (b) achieving a controlled growth of Si and Ge nanostructures 1.4 Organization of Thesis ... ratio of the GeNWs as (a) a function of pressure of GeH 4 at 290 °C, and (b) a function of the growth temperature at 40 Torr of GeH 4 Inset in (a) defines the length and the diameter of a GeNW...

Ngày tải lên: 11/09/2015, 10:04

... metabolism and to identify the gene functions of the organisms The analyses of such models lead to better understanding of the systems structure and its behavior (modeling and simulation) and interpretations ... complexity of genomics and extract their biological and clinical significance The integration and modeling of such diverse information can vastly enhance the power of systems biology approach and it ... Profiles of optical cell density and residual concentration of various nutrient components and products in the complex medium Highlighted regions correspond to three different growing phases of...

Ngày tải lên: 11/09/2015, 21:27

... c-met and identification of c-met as the receptor of HGF 2 1.2 Structure of HGF and c-met 3 1.2.1 Structure of HGF 3 1.2.2 Structure of c-met 3 1.3 HGF regulation by HGF activator (HGFA) and ... analyses of zebrafish Hgfa, Hgfb and c-Met 106 3.1.4 Genomic localization and synteny analyses of zebrafish hgfa, hgfb and c-met 108 3.1.4.1 Genomic localization and synteny analyses of zebrafish ... 1FUNCTIONAL CHARACTERIZATION OF HGF AND ITS RECEPTOR C-MET IN ZEBRAFISH DEVELOPMENT SHENG DONGLAI (B Sc.) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF BIOLOGICAL...

Ngày tải lên: 12/09/2015, 08:18