structure properties and characterization of polymeric biomaterials

... polymers due to its excellent conductivity and other essential physical properties Consequently, main focus of this review is structure, properties and application of technically important conjugated ... of main interest among family of conjugated polymers due to its outstanding conduction mechanism and good environmental stability in the presence of water and oxygen Polyaniline is also one of ... polymers a potential field of interdisciplinary research [10] A new class of materials which demonstrate highly reversible redox behavior and strange deal of properties of metal and plastics are conductive

Ngày tải lên: 21/12/2018, 15:56

... 2(A)) and the average Mn of P3HT of 4500 g mol−1 , the ratio between the number of P3HT chains and the number of cores was estimated to be 3.2 This suggests that the product contained about 6% of ... polystyrene standards of s-P3HT-TPA and s-P3HT-TPB were 6000 g mol−1 and 7200 g mol−1 , with polydispersity indexes (Ð) of 1.55 and 1.23, respectively The single distributions of the molecular ... Figure DSC second-heating traces (exo up) of linear P3HT, s-P3HT-TPA and s-P3HT-TPB Thermal properties of s-P3HT-TPA and s-P3HT-TPB The thermal properties of the star-shaped P3HTs were studied via

Ngày tải lên: 17/12/2017, 15:33

... - 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 - ... thesis is proposes as "Research on the synthesis and characterization of structure and properties of TiO2-based nanocomposite for the treatment of some pollutants in air environment " The topic ... MINISTRY OF EDUCATION AND TRAINING VIETNAM ACADEMY OF SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY OF SCIENCE AND TECHNOLOGY - MA THI ANH THU RESEARCH ON THE SYNTHESIS AND CHARACTERIZATION

Ngày tải lên: 10/01/2020, 06:43

... of the influence of alkali treatment on the properties of Car is needed The rheological properties and microstructure of mixtures were done on adding KCl or CaCl2 However, gelation of ι-car and ... proportions of MM, MG and GG blocks, depending on the source of seaweed and extraction methods 31–33 The M/G ratio and block structure influence the physico-chemical properties of alginate Typically, ... alvarezii is the best choice for expanding cultivation areas The study of the rheology and microstructure of 50/50 mixtures of ι-car and κ-car gel in the presence of CaCl2 confirmed that the mixtures

Ngày tải lên: 17/02/2021, 09:56

... of the influence of alkali treatment on the properties of Car is needed The rheological properties and microstructure of mixtures were done on adding KCl or CaCl2 However, gelation of ι-car and ... proportions of MM, MG and GG blocks, depending on the source of seaweed and extraction methods 31–33 The M/G ratio and block structure influence the physico-chemical properties of alginate Typically, ... alvarezii is the best choice for expanding cultivation areas The study of the rheology and microstructure of 50/50 mixtures of ι-car and κ-car gel in the presence of CaCl2 confirmed that the mixtures

Ngày tải lên: 17/05/2021, 14:35

... methods using software SIR2014 [40] and the structure refinement was performed using SHELXL-97 [41] Results and discussion 3.1 Structure of UU-200 While the structure of CAU-17, CAU-33, and SU-101 ... refinement to complete the structure The structure refinement converged with an R1-value of 0.33 and GooF of 2.23, see Table S1 for complete statistics The structure of UU-200 was also confirmed ... gas sorption and separation properties Here, we present the gas sorption properties of three microporous Bi-MOFs, namely, CAU-17, CAU-33, and SU-101, along with a new trimesate-based structure,

Ngày tải lên: 20/12/2022, 22:16

... min, bands with molecular masses of 43 and 39 kDa were observed in addition to undigested bands of ZP2 and ZP3. After incubation for 10 min, three major bands with molecu- lar masses of 43, 39 and ... microscopy, we observed changes of the fine structure of envelope. Figure 4D shows the structure of an intact egg envelope, which was composed of a thick inner layer and a thin outer layer. The inner layer ... and swells the envelope. The cross-species digestion using enzymes and substrates of zebrafish and medaka revealed that both ZHE1 and MHCE cleaved the same sites of the egg envelope proteins of

Ngày tải lên: 07/03/2014, 04:20

... integrated elution peak areas, and the PDI’s oxidase and isomerase activities were expressed as the initial rate of decrease of linear tx3a and the initial rate of increase of nTx3.1, respectively. ... amounts of nTx3.1 and sTx3.1 were calculated from their elution peak areas. The data are the average of three independent experiments. For the rate of increase of the native form in the presence of ... rate of decrease of the linear form, the original data were fitted by Y(t) ¼ e –kt · 100%, where Y is the percentage of the linear form, and t is the refolding time. For the rate of increase of

Ngày tải lên: 07/03/2014, 05:20

... parameters and transport characteristics of Bip-[ 3 H]Pro. Results and Discussion Synthesis, chemical characterization and stability of Bip-Pro Figure 1 shows the structure (Fig. 1A) and the synthe- sis ... a competitive mode of action. Uptake of Bip-[ 3 H]Pro by SKPT cells After characterization of Bip-Pro as a very high-affin- ity and enzymatically stable substrate of PEPT1 and PEPT2, the compound ... differ- ent Gly-Sar concentrations (50 and 500 lm in Caco-2 cells and 10 and 100 lm in SKPT cells) in the presence of increasing concentrations of Bip-Pro (0– 100 lm and 0–50 lm, respectively). The

Ngày tải lên: 07/03/2014, 05:20

... region between b and b¢ in GmPDIL-1, and between b and b¢ and b¢ and a¢ in GmPDIL-2, the structure of these regions may be protease resistant. The activity of recombinant GmPDIL-1 and GmP- DIL-2, ... sequences of both GmPDIL-1 and GmPDIL-2 were cloned and sequenced. The comparison of soybean genomic sequences with those of Arabidopsis, rice and wheat showed impressive conservation of exon–intron structure ... In the case of GmPDIL-2, 10 of the 11 introns had TTNAN, and the eighth intron possessed CTNAN. Promoter regions of around 1 kb and 1.5 kb upstream of each start codon of GmPDIL-1 and GmP- DIL-2

Ngày tải lên: 07/03/2014, 05:20

... parameters of CYP719A3, the amount of nandinine produced was estimated by using the calibration curve of (S)-scoulerine (pmol versus peak area) and the absorption ratio of (S)-scoulerine and ... absence of NADPH or removal of O 2 by the glucose ⁄ glucose oxidase ⁄ catalase system [7] clearly inhibited the CYP719A2 and CYP719A3 activities. Substrate specificity and affinity of CYP719A2 and ... concentration of 0.4 lm (Fig. 3). Expression of CYP719A2 and CYP719A3 genes in E. californica plants: tissue specificity and their response to methyl jasmonate (MeJA) We examined the accumulation of mRNA of

Ngày tải lên: 07/03/2014, 10:20

... The sequences of the upper strand of the normal and the corresponding mutant oligonucleotides are listed in Table The probes were prepared by annealing the upper and lower strands of oligonucleotides, ... isolation and characterization of the STAT5 gene from T fluviatilis (TfSTAT5), the third member of the STAT family from fish, to establish the evolutionary relationship of STAT5 between mammals and teleosts ... genomic structure of TfSTAT5, the full-length cDNA was synthesized by PCR amplification using first-strand cDNA prepared from T fluviatilis gill and specific primers designed from the results of 5¢and...

Ngày tải lên: 31/03/2014, 07:20

... 10 O O Me Structure, Properties, and Preparation Of Boronic Acid Derivatives Figure 1.3 Representations of the X-ray crystallographic structure of phenylboronic acid (A) ORTEP view of a dimeric ... OMe 41 42 1.2 Structure and Properties of Boronic Acid Derivatives polyols, by Kuivila and co-workers, described the preparation of several esters of phenylboronic acid by reaction of the latter, ... example, the pKa of PhB(OH)2 decreases 21 22 Structure, Properties, and Preparation Of Boronic Acid Derivatives from 8.8 to 6.8 and 4.5 upon formation of cyclic esters with glucose and fructose,...

Ngày tải lên: 02/07/2014, 12:53

... deprotection and lithiation of the 4-(propylcarboxalato)phenoxy side groups, and the characterization of the polymers are discussed to illustrate the dependence of ion transport and hydrophobic properties ... chemical structure of the monomer directly influences the physical properties of the polymer This allows the physical properties of polymers to be tuned for specific applications 2 1.1.1 History of ... alternating sequence of two monomers Random and alternating copolymers typically exhibit properties that are intermediate of the two respective homopolymers of each monomer The third type of copolymer...

Ngày tải lên: 13/11/2014, 11:13

... intense band of 61 kDa (NrfA) and a band of weak intensity of 19 kDa (NrfH), confirming its hetero-oligomeric nature (Fig 1, lane 1) However, in the absence of boiling (Fig 1A, lanes and 4) high ... and 4) high molecular mass bands of approximately 110 kDa and > 200 kDa were visible, as well as a faint band at 37 kDa, suggesting the presence of dimers All of the bands stained positively for ... suggests that the bands at approximately 110 and 37 kDa correspond to strongly attached dimers of both NrfA (a2) and NrfH (b2), respectively The presence of dithiothreitol (Fig 1A, lanes and 2) did not...

Ngày tải lên: 21/02/2014, 00:20

... maximum of the Soret band with a small absorption coefficient (Table 1) On the other hand, relative intensities of the 498 and 630 nm bands compared with those of the 575 and 535 nm bands in the ... [23], and Hem O, N meningitidis A 2855 [25] Soret and Q (a and b) bands of the oxy form and the CO-bound form not show specific differences from those of mammalian or bacterial HOs The small band ... addition of NADPH Shift of the Soret maximum to 410 nm and appearance of the 534 and 573 nm bands in the visible region indicate that the oxy complex of heme–Syn HO-1 is produced within and accumulated...

Ngày tải lên: 23/03/2014, 20:22

... polysaccharide One milligram of the partially purified polymer contained 309.7 µg of protein, 160.2 µg of neutral sugar, 58.5 µg of hexosamine, 30.8 µg of uronic acid and 3.8 µg of phosphorus Constituent ... concentration of ppm to estimate the effect of pH After min, A660 was measured and the extent of flocculation was calculated Pronase digestion of extracellular polymer Forty milligrams of the extracellular ... as follows: 500 g of soil was washed times with distilled water and suspended in 1,000 ml of water The mixture was allowed to stand for 10min and the supernatant was collected and used for the...

Ngày tải lên: 05/09/2013, 09:08

... diameter of the PVDF membrane, the PVDF-PS membrane and the PVDF-SPS membrane is 0.25 µm, 0.12 µm and 0.16 µm, respectively It can be seen that the polymerization of styrene and the blending of PS and ... (DMAc) firstly, and then styrene, divinylbenzene (DVB) and benzoyl peroxide (BPO) were added to the solution and stirred with water bath at 343 K The dosage of PVDF, styrene, DVB and BPO was that ... International Journal of Energy and Environment (IJEE), Volume 1, Issue 4, 2010, pp.643-656 645 2.5 Measurement of proton conductivity The proton conductivity of the PVDF-SPS membrane and Nafion-117...

Ngày tải lên: 05/09/2013, 16:11

... tissue of mouse and spleen and thymus of human and mouse [11,37] Foxp3 is also highly expressed in lymphoid organs, such as the thymus and spleen [49], and its expression within a variety of other ... t-bet, stat6 and foxp3 were also determined and found to be very similar to their human homologues Both the human and zebrafish T-bet and Foxp3 genes contained the same number of exons and introns ... the expression of these genes within humans and mice, of T-bet within Ginbuna crucian carp [27] and STAT6 in mandarin fish [28] have shown similar widespread expression In the case of STAT6, highest...

Ngày tải lên: 16/02/2014, 09:20

... Identification of the initiation codons in GmPDIL-3a and Gm-PDIL-3b mRNAs (A) Schematic representation of the structure of GmPDIL-3a and GmPDIL-3b mRNAs The putative ORFs (gray boxes) of GmPDIL-3a and GmPDIL-3b ... S1 Comparison of intron–exon structures of GmPDIL-3a, GmPDIL-3b and orthologs of other plants Fig S2 Multiple amino acid sequence alignment of GmPDIL-3a, GmPDIL-3b and orthologs of other plants ... http://www.phytozome.net/soybean#A) Comparison of the genomic sequences of GmPDIL-3a and GmPDIL-3b with those of the Arabidopsis and rice orthologs showed conservation of exon ⁄ intron structure across these plant...

Ngày tải lên: 18/02/2014, 11:20