polymeric materials from biogenic macromolecular structures
Báo cáo khoa học: Protein crystallography for non-crystallographers, or how to get the best (but not more) from published macromolecular structures potx
Ngày tải lên :
16/03/2014, 06:20
... been compiled based on small-molecule structures [9–11] but there is growing evidence from high-quality protein models that the nuances of macromolecular structures should also be taken into account ... not obvious from the diffraction-space residuals Root-mean-square deviations from stereochemical standards Rmsd from standard stereochemistry indicate how much the model departs from geometrical ... crystallographic models of macromolecular structures For the resolution and R criteria, the more ‘green’ (i.e lower) the value, the better With Rfree – R and rmsd from ideality the situation...
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Architecture of polymeric nanophase materials from understanding to fabrication
Ngày tải lên :
11/09/2015, 14:29
... insulation materials, and high energy density batteries 1.2 POLYMERIC NANOPHASE MATERIALS Polymeric nanophase material normally refers to materials with nanometer-sized domains prepared from polymers ... Nanophase Materials 1.1.1 Introduction 1.1.2 Synthesis of Nanophase Materials 1.1.3 Applications of Nanophase Materials 1.2 Polymeric Nanophase Materials ... prepared from P84/strong EPDs/ethanol Figure 4.4 Unstable samples prepared from P84/NMP/non-EPAs Figure 4.5 Unstable samples prepared from P84/DMSO/non-EPAs Figure 4.6 Unstable samples prepared from...
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Teaching Materials from the Literature Department of the British Council doc
Ngày tải lên :
24/03/2014, 19:20
... 1’00”) Presenter Conference delegates, Jose Martins from Brazil, Kaz Takahashi from Japan and Kavetsa Adagala from Kenya 40 45 An important message from the conference is that interaction with texts, ... impair the spontaneity Example Wedding by Alice Oswald From time to time our love is like a sail and when the sail begins to alternate from tack to tack, it’s like a swallowtail and when the ... it was _ rhyme from line (l.4) stressed syllables (l.5) “ _”, he said, stressed syllables in gap (l.6) “ _” _ rhyme from line stressed...
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Báo cáo khoa học: Catalytic reaction mechanism of Pseudomonas stutzeri L-rhamnose isomerase deduced from X-ray structures doc
Ngày tải lên :
29/03/2014, 08:20
... d-XI based on the X-ray structures According to the enediol mechanism, two bases transfer a proton from O2 to O1, and a proton from C1 to C2, respectively, producing ketose from aldose, as shown ... ion In the structures of d-XIs, a water molecule coordinating to the metal ion was thought to act as a base to transfer a proton from O2 to O1, but a suitable base to transfer a proton from C1 to ... transfer a proton from O2 to O5 After the ring has been opened, the catalytic water molecule (W4) mediates the transfer of a proton from O1 to O2, and a hydride (H1A), shielded by Trp179 from solvent...
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Báo cáo khoa học: Protein interactions in the sumoylation cascade – lessons from X-ray structures pdf
Ngày tải lên :
30/03/2014, 04:20
... and removes SUMO to and from substrate proteins resembles that involved in ubiquitination [1,4] Like ubiquitin, SUMO Table Protein structures referred to in the review All structures except for ... are conserved from yeast to human [2] The crystal structures of human Aos1-uba2, human APPBP1-uba3, and of the partly resolved mouse uba1, are closely related [15,21,23] (Fig 3C) From the side ... involved in sumoylation, neddylation and ubiquitination reactions (A) and (B) are modified from [1], and (C) and (D) from [29] and [7], respectively The consensus lysine sites of SMT3 and SUMO-2 ⁄ 3,...
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Báo cáo khoa học: "NOUN CLASSIFICATION FROM PREDICATE.ARGUMENT STRUCTURES" pot
Ngày tải lên :
31/03/2014, 18:20
... in their frequency normalized by what we would expect More is to be learned from the fact that you can drink wine than from the fact that you can drink it even though there are more clauses in ... sink_, drift_, step off_, step from_ , dock_, righ L, submerge , near, hoist , intercept, charter, stay on_, buzz_, stabilize_, _sit on, intercept, hijack_, park_, _be from, r o c k , get off_, board, ... intercept-, stay with_, _be from, _hit, seize, damage_, _carry, t e a c h , use_, return_, destroy_, attack , " be, be in , take, -have_, -say_, _make, include_, see_ step from_ , park_, board , hit,...
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analysis and deformulation of polymeric materials paints, plastics, adhesives, and inks
Ngày tải lên :
02/04/2014, 16:27
... ANALYSIS AND DEFORMULATION OF POLYMERIC MATERIALS Paints, Plastics, Adhesives, and Inks Jan W Gooch CHEMISTRY AND APPLICATIONS OF LEUCO DYES Edited by Ramaiah Muthyala FROM CHEMICAL TOPOLOGY TO THREE-DIMENSIONAL ... composition of polymeric materials The information within these pages is intended to arm the reader with the necessary working knowledge to analyze, characterize, and deformulate materials The ... Monomers and Related Materials 8.3 Additives for Plastics 8.3.1 Polymerization Materials 8.3.2 Protective Materials ...
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buchmeiser - polymeric materials in organic synthesis and catalysis (wiley, 2003)
Ngày tải lên :
03/04/2014, 12:15
... development are presented in this book Most authors give their complementary views from different Polymeric Materials in Organic Synthesis and Catalysis Edited by Michael R Buchmeiser Copyright ... essentially insoluble materials lead to considerably simplified reaction work-up and product isolation procedures when used e g in solid phase synthesis or as catalyst or Polymeric Materials in Organic ... for resins prepared from styrene/divinylbenzene/vinylbenzyl chloride [23] In the case of resins R1–R5 where the DVB content is increased from 0.5 to 5.0 wt% the resins progress from being rather...
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Báo cáo hóa học: " Polymeric Nanocapsule from Silica Nanoparticle@Cross-linked Polymer Nanoparticles via One-Pot Approach" pdf
Ngày tải lên :
22/06/2014, 00:20
... 97.0%), provided by Tianjin Chemical Co., China, was recrystallized twice from acetone HEA was of analytical reagent grade from Beijing Eastern Yakeli Chemical Engineerings S & T Ltd Co., Beijing, ... ethanol in turn and then dried in vacuum 123 The reaction scheme to the cross-linked polymeric nanocapsules from the silica nanoparticles@cross-linked polymer composite particles via the one-pot ... method, which can be extended to the other cross-linked polymeric nanocapsules It is also expected that the cross-linking degree of the polymeric shells could be controlled by the 123 12 13 14...
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Báo cáo hóa học: " Preparation and Characterization of Nano structured Materials from Fly Ash: A Waste from Thermal Power Stations, by High Energy Ball Milling" potx
Ngày tải lên :
22/06/2014, 18:20
... 398 phenomena depending on the materials being milled [5–7] This produces novel crystalline and amorphous materials with crystallite sizes at the nanometer scale Coal-burning ... rubber based composites 123 Nanoscale Res Lett (2007) 2:397–404 Experimental Materials Fly ash samples collected from Kolaghat Thermal Power Station, West Bengal, India having a specific gravity ... extensively used to understand the surface characteristics of the materials [15] The total surface free energy has increased from 19.223 mJ/m2 for fresh fly ash, to 56.954 mJ/m2 for ball milled...
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Thermal Analysis of Polymeric Materials pptx
Ngày tải lên :
27/06/2014, 15:20
... and used as an important tool in description of polymeric materials in Chaps and The solid state, finally, has gained by the understanding of macromolecular crystals with helical molecules, their ... greater interest in the structure of materials, being closer to human experience when compared to molecular motion In the 19th century the description of materials could be based for the first ... lengths or larger Particularly the nanophases may then have structures with interfaces that frequently intersect macromolecules, giving the materials unique properties Finally, the classical phases,...
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Thermal Analysis of Polymeric Materials Part 1 pot
Ngày tải lên :
11/08/2014, 05:23
... and used as an important tool in description of polymeric materials in Chaps and The solid state, finally, has gained by the understanding of macromolecular crystals with helical molecules, their ... greater interest in the structure of materials, being closer to human experience when compared to molecular motion In the 19th century the description of materials could be based for the first ... lengths or larger Particularly the nanophases may then have structures with interfaces that frequently intersect macromolecules, giving the materials unique properties Finally, the classical phases,...
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Thermal Analysis of Polymeric Materials Part 2 pptx
Ngày tải lên :
11/08/2014, 05:23
... available from (6) Indirectly, it is possible to derive pressure, p, as stress in (4), the number of moles, n from (6) by combining the total mass with the molar mass, which is deduced from the ... materials of optimum properties and leads to the understanding of the behavior of already known polymeric materials, the elusive goal of every modern material scientist 1.3 Chain Statistics of Macromolecules ... 6th century BC, suggested that light travels in straight lines from the eye to the object and that the sensation of sight arises from the touch of the light rays on the object This feeling with...
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Thermal Analysis of Polymeric Materials Part 3 pps
Ngày tải lên :
11/08/2014, 06:20
... to interpret the behavior of polymeric materials as is described in more detail on-hand of a larger series of examples in Chaps and The understanding of polymeric materials at this level has the ... vibrations from the experimental data, the contributions of the group vibrations must be subtracted from Cv A table of the group vibration frequencies for polyethylene can be derived from the normal ... interest to note that the fully amorphous heat capacity from this graph agrees well with the extrapolation of the heat capacity of the liquid from above the melting temperature (414.6 K) Finally,...
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Thermal Analysis of Polymeric Materials Part 4 pdf
Ngày tải lên :
11/08/2014, 06:20
... help for interpretation comes from the fact that related materials have similar changes in disorder—the entropies of transition are similar for structurally related materials Richards’s rule, for ... connection to the condensed phases is shown in Fig 2.115 by boiling from the liquid phase (at Tb) or the direct transition from the solids by sublimation (at Ts) The motions observed for a specific ... functions with temperature can be derived from a detailed understanding of heat capacity (see Sects 2.3) The link between heat capacity and enthalpy is obvious from its definition (Fig 2.10) Entropy...
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Thermal Analysis of Polymeric Materials Part 5 docx
Ngày tải lên :
11/08/2014, 06:20
... lengths from molecule to molecule, as could result from a stepwise reaction (see Sect 3.1) Distributions of sequence lengths exist in all these copolymers and could, again, be calculated from the ... quantitative kinetics, gained from isothermal experiments The fraction of droplets crystallized, n/no, can then be estimated from: where v is the volume of the droplet and t the time From the half-time, ... Typical applications range from aircraft and aerospace to industrial, transportation, and recreational equipment The fifth polymer reaction is an example of grafting to structures described in Sect...
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Thermal Analysis of Polymeric Materials Part 6 doc
Ngày tải lên :
11/08/2014, 06:20
... higher work function The work function is the energy needed to remove one electron from a metal surface, i.e., from its Fermi level—usually measured in eV One can think of the metal with the higher ... positive, but macromolecular crystals have often a close to zero or negative L in the chain direction The best known, exceptional substance with a negative volume expansivity is water from the melting ... at equal temperature The potential difference created in one junction by the drift of electrons from the low-work-function to the high-work-function metal is exactly opposite to the potential...
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Thermal Analysis of Polymeric Materials Part 7 doc
Ngày tải lên :
11/08/2014, 06:20
... analysis of nonequilibrium states as are common in polymeric systems Fingerprinting of Materials Changing to a less quantitative application, materials are characterized by their phase transition ... is possible to estimate from Cp how many units of the material analyzed become mobile at Tg The DSC of the glass transition is thus a major source for characterization of materials Quantitative ... (1) and is available from the ATHAS Data Bank as summarized in Appendix The needed quantity Cp# Cpa, represents the difference between the measured curve and Cpa available from the DSC trace Figure...
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Thermal Analysis of Polymeric Materials Part 8 pdf
Ngày tải lên :
11/08/2014, 06:20
... together, and combined with knowledge from thermodynamic theory, to begin to understand the often complicated melting and crystallization behavior of polymeric materials (see Chaps 5–7) 412 Thermal ... most polymeric materials, viscoelastic behavior can be found for sufficiently small amplitudes of deformation Rigid macromolecules and solids, in general, show relatively little deviation from ... Raton, FL Sect 4.3 The main reference for DSC of Materials is the two-volumes compendium: Turi E (1997) Thermal Characterization of Polymeric Materials Academic Press, San Diego References for...
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