polymers of crotonaldehyde and methacrolein

... biological research II POLYMERS OF CROTONALDEHYDE AND METHACROLEIN (This section was prepared by O Nuyken, R Bayer and J Bayer.) A Crotonaldehyde Properties and Structure Crotonaldehyde (2-butenal, ... produced by hydrolysis of the polymeric product of the lactonization of crotonaldehyde with ketene and water [201–203] ð22Þ The copolymerization of pyrrole, crotonaldehyde, and a polymerizable, ... [268,269] Derivatation of methacrolein copolymers with NaHSO3 respectively Na2S2O5 produces copolymers with sulfite groups which leads to water soluble copolymers [270–272] Copolymers of methacrolein are...

Ngày tải lên: 13/08/2014, 16:21

... and dielectric loss tan of the MP80 and M48 samples measured at frequency of 1kHz, 10kHz, 100kHz and 1MHz, respectively We can see that the shape of the peaks was broad, which is typical of ... decreased The largest values for kp of 0.55, kt of 0.46, 21 d31 of 112 pC/N, Qm of 1174 and minimum value of the dielectric loss tan is 0.006 were obtained at content of CuO = 0.125 % wt These are ... systematic research of the dielectric, piezoelectric and ferroelectric properties contribute further understanding of the physical properties of the multi-component ceramics based on PZT and the relaxor...

Ngày tải lên: 04/12/2014, 02:54

... measured at and 300 K for the undoped sample Temperature dependence of magnetization of nanoparticles with cobalt concentrations of 0.05 and 0.18 M in a field of 500 Oe are shown in Fig 7a and b, respectively ... distortion of the tetrahedral coordination of Co2? ions and direct band gap absorption, while high cobalt concentration samples ([0.05 M) have more distortion of the tetrahedral coordination of Co2? and ... Indirect energy band gap for the high cobalt concentration ([0.05 M) is shown in Fig 5b Energy band gap of 3.29 and 3.09 eV is obtained for the cobalt concentrations of 0.12, and 0.18 M It can...

Ngày tải lên: 22/06/2014, 00:20

... coarse sands accounted for 25.5% of these horizons, and loams only for 14.5% While 50.9% of Can horizons was composed of loose and coarse sands, 20.4% of medium sands, and 12.7% of loams In 30% of ... which was made up of loams in 52.9%, of loose and coarse sands in 29.4%, and of medium sands in 17.7% These results showed how great the diversification of the textural make-up of the soil substrate ... group of soils of industrial and urban areas with an undeveloped profile (AinCan – Can – IICan) The outside spoil bank of the Bełchatów brown coal mine is composed of a mosaic of formations of the...

Ngày tải lên: 07/08/2014, 03:22

... Bachelor of Dental Surgery (B.D.S), Rajiv Gandhi University of Health Sciences, Bangalore, India Department: Oral and Maxillofacial Surgery, Faculty of Dentistry Thesis Title: A comparative study of ... monosulphate and ettringite as the main hydration products Fridland and Rosado (2003) and (2005) found that MTA was capable of maintaining its high pH over a long duration of time and calcium ... by Holland et al (1999a), and Holland et al (2001b), that the mode of action of MTA was similar to Calcium hydroxide The basis for the biologic properties of MTA was due to the production of hydroxyapatite...

Ngày tải lên: 15/09/2015, 22:51

... characteristics of the "Sassi of Matera" and "Trulli of Alberobello" In the South of Italy, the sites of the "Sassi of Matera" (Figure 1a) (classified as humanity world heritage in 1993) and "Trulli of Alberobello" ... typologies of building wall: a wall in blocks of calcarenite sandstone assembled with mortar, typical of the constructions of "Sassi of Matera," and a masonry made with dry calcareous stones of Fasano, ... University of Bari in 1979 University Researcher at the of Engines and Energy Institute of the Faculty of Engineering at the University of Bari from 1983 to 1987 Associate professor of Technical...

Ngày tải lên: 05/09/2013, 14:58

... specialized and contain structs of a certain type used by a certain part of the kernel; others are more general and contain memory regions of 32 bytes, 64 bytes, and so on The advantage of using ... maps of a process are laid out in an Adelson-Velski-Landis (AVL) tree The software structure is implemented in mmap_avl.c Swap file initialization and removal (i.e., the swapon and swapoff system ... features such as device handling, firewalls, multicasting, and aliases; this includes the handling of socket buffers (core/skbuff.c) and socket operations that remain independent of the underlying protocol...

Ngày tải lên: 21/01/2014, 07:20

... editing and support Conflict of interest The study was sponsored by Eli Lilly and Company AS and RE are employees and shareholders of Eli Lilly and Company RE and TW were employees of Eli Lilly and ... symptoms of the disorder and reflect various dimensions of QoL CHIP-CE has child-, adolescent- and parent-rated versions, allowing the assessment of the patient’s QoL both from the parent’s and from ... domains of Satisfaction, Comfort, Resilience and Risk avoidance and in addition the two sub-domains of the Achievement domain Moderate to high correlations between the CHIPCE scales and measures of...

Ngày tải lên: 12/02/2014, 19:20

... N P Kaimachnikov and B N Kholodenko parameters and, for clarity of exposition, we present the analysis of the Src cycle in terms of Eqns (6–8) Intrinsic regulatory properties of the Src (de)activation ... Figure 4B helps us understand this excitable behavior by presenting the pulse of Src activity in the plane of the inactive and active fractions, si and s1 If the duration of the stimulus exceeds ... large activities of Csk and RPTP, demonstrating robustness of the bistable behavior Oscillations occurring within regions and correspond to lower concentrations of active Csk and RPTP than the...

Ngày tải lên: 18/02/2014, 11:20

... bottom of the cleft and a lobe containing the structural zinc at the mouth of the cleft and thus exposed to the solvent [8] Gradual depletion of the enzyme first of the structural and then of the ... GdhA still displayed half of its maximal activity The influence of adenine nucleotides, inorganic phosphate and pyrophosphate and downstream products of the Entner–Doudoroff pathway on enzymatic ... the cytoplasm of Picrophilus The kinetics of NADPH degradation was followed by measuring the rate of decrease of its absorbance at 340 nm over the pH range 3.6–7.0 and at 40, 60 and 80 °C The...

Ngày tải lên: 19/02/2014, 16:20

... oxidized and the negative signals with the reduced form of the enzyme For the reduced form, the Soret band can be observed at 415 and 442 nm, and for the oxidized form at 403 and 422 nm The b–band ... can be seen at 517 nm and the a–band at 547 nm and 603 nm The difference signals that can be observed between 400 and 700 nm include the contributions of the hemes c, a and a3 The difference ... 0.248 V and 0.378 V vs SHE¢, respectively) After addition of the inhibitor cyanide (open circles) a midpoint potential of )0.22 V ± 0.01 V for heme a3-CN– and of Em2 ¼ 0.00 V ± 0.02 V and Em3...

Ngày tải lên: 21/02/2014, 15:20

... values) of Ni(II) and Cu(II) complexes of peptides at I = 0.1 M (KNO3) and 25 C Standard deviations on the last digits are given in parentheses EPR The X-band EPR spectra of Cu(II) complexes of VIHN ... complexes of VIHN [11] and the DAHam complexes of Cu(II) and Ni(II) [31] were studied previously Tables and thus present only the novel data: protonation constants for DAHKam and VIHN, and stability ... Stock solutions of NiCl2 and CuCl2 were standardized gravimetrically with dimethylglyoxime and complexometrically with EDTA, respectively Concentrations of stock solutions of HSA and BSA were estimated...

Ngày tải lên: 22/02/2014, 04:20

... understanding and will be the focus and repeating theme throughout the text A sound understanding of cardiac physiology begins with basic understanding of cardiac anatomy and of the physiology of ... composed of bundles of myosin strands with each strand having a tail, a hinge and a head region The tail regions bind to each other in the central portion of the filament and the Page of 23 strands ... of this manuscript is to provide a detailed understanding of the heart as a muscular pump and of the interaction between the heart and the vasculature The concepts of contractility, preload and...

Ngày tải lên: 22/02/2014, 09:20

... moiety of Arg51 and three atoms of FMN (N1, O2 and O3) In both FeR and M acetivorans avoredoxin, the corresponding residue is asparagine (Asn47 and Asn52, respectively) to which only the O2 atom of ... the Km and kcat values of E coli Fre for riboavin are reported as 2.5 lm and 52.4 s)1 with NADPH as the electron donor and 1.3 lm and 30.6 s)1 with NADH [13] For FMN, Km and kcat values of E coli ... of the logarithms of the concentration ratios for oxidized and reduced forms of the mediator versus that of recombinant avoredoxin Reduction titration of avoredoxin by NAD(P)H The reduction of...

Ngày tải lên: 07/03/2014, 02:20

... morphologies and stabilities of the fibrils against solubilization Results Seeding of fibril growth of PABPN1 N-terminal fragment variants Previous analyses of poly l-alanine-dependent fibril formation of ... structure of the fibril and the b-strand arrangements remains to be determined Yet, knowledge of the structure and biophysical analysis of the fibrils alone will not suffice for understanding the disease ... e.g of the NM domain of the yeast prion protein Sup35p [29] and also for the detection of a-synuclein fibrils [30] In fact, ANS signals showed a linear correlation with the concentration of fibrils...

Ngày tải lên: 07/03/2014, 11:20

... the monomeric form and 45% in the trimeric form, and b-structure is absent from both forms The CD spectra of the 1–70 and 70–90 regions of the protein are reported in the inset of Fig The secondary-structure ... basis of the known protein sequence and the endoproteinase Glu-C specificity In most cases, a mixture of the native and acetylated peptides was observed and identified by the mass increase of 42 ... relative level of acetylation of a peptide was estimated on the basis of the intensity ratio of the native and acetylated species From the data summarized in Table 1, it can be seen that some of the...

Ngày tải lên: 07/03/2014, 14:20

... NdeI and BamHI and 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 ... D230, I228 and is directly constrained by the carbonyl oxygen of G168 Inclusion of F221 obscures the local structure in the proximity of T171 and for clarity is omitted Table Comparison of functional ... basis of their sensitivity to pH, the bands at 220 and 247 cm)1 are assigned to two m(Fe-Im) modes The band at 276 cm)1 is assigned to an internal vibrational mode of the imidazole ligand, which...

Ngày tải lên: 07/03/2014, 21:20

... amount of 105–110 kDa protein was reduced and in many instances evidence of aggregation was evident at the top of the gels The amount of aggregate present at the top of the Western blot of the ... glycosphingolipid- and caveolin-enriched fractions To test this hypothesis, we isolated membrane fractions from mammalian cells and examined the distribution of the Na+/H+ exchanger and of caveolin, a marker of ... pelleted and the supernatant and pellets were subjected to SDS/PAGE and immunoblotting as described in the Materials and methods’ Lane 1, untreated fraction 5, lg; lane 2, lg of supernatant of the...

Ngày tải lên: 08/03/2014, 16:20

... atoms: Ct of the C-terminus, Cc of Asp and Cd of Glu, and Og of Tyr Positive unit charges were added at the following atoms: Nt of the N-terminus, Nf of Lys, Cf of Arg, and Nd or Ne of His (depending ... I and II of monomer 1, and helices I¢ and II¢ of monomer 2, are intertwined We call this a top-bottom structure The inset of Fig shows a cylinder model of the lowest total energy structures of ... well-defined elements of secondary structure, helices I, II of monomer (yellow traces) and helices I¢, II¢ of monomer (grey traces) The location of the four helices and the amino and C-termini are...

Ngày tải lên: 08/03/2014, 22:20

... study of polymers III Technique of mechanical tests of vulcanizates of rubber and plastics Rubber Chem Tech., 13, 904–917 Haward, R.N (1942) Extension and rupture of cellulose acetate and celluloid ... in the range of temperatures and strain rates of interest A linear dependence of yield stress as a function of log strain rate can be observed over a large interval of strain rates and temperatures, ... deformation and failure of floworiented semi-crystalline polymers Macromolecules, 37, 8618–8633 G’Sell, C., Hiver, J.M., Dahoun, A., Souahi, A (1992) Video-controlled tensile testing of polymers and metals...

Ngày tải lên: 09/03/2014, 00:20