the mechanical properties of fibermatrix interfaces
Tài liệu MECHANICAL PROPERTIES OF THE HEART AND ITS INTERACTION WITH THE VASCULAR SYSTEM ppt
... which specify the curvature of the line and are determined by the mechanical properties of the muscle as well as the structural features of the ventricle. This curve is called the "end-diastolic ... contraction there is a period of time during which the mechanical properties of the heart are characterized by the EDPVR; knowledge of the EDPVR allows one to specify, for the end of diastole, ... interaction between the ongoing contraction process of the cardiac muscles and the properties of the arterial system and is beyond the scope of this lecture. As the contraction process of the cardiac...
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The composition dependent mechanical properties of ge si core–shell nanowires
... gaps of Ge-core/Si-shell and Si-core/Ge-shell nanowires at the level of density functional theory, where the composition is definedas the ratio of the number of atoms of the core to the number of ... with each other,and thus the Young’s modulus of either core or shell is not the same as that of the isolated nanowire or the isolatednanotube. On the other hand, the Young’s modulus of acore–shell ... the existence of the region around the interface between the core and the shell of a core–shell nanowire.Basically, it is unreasonable for the core or the shell toinclude the volume of the whole...
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Tài liệu Mechanical Properties of Engineered Materials P2 pptx
... Inc.ÆÀ1¼1=5boundaryisoneinwhich1in5ofthegrainboundaryatomsmatch,asshowninFig.2.8(c).Twinboundariesmayformwithincrystals.Suchboundarieslieacrossdeformationtwinplanes,asshowninFig.2.8(d).Notethattheatomsoneithersideofthetwinplanesaremirrorimages.Stackingfaultsmayalsobeformedwhentheperfectstackinginthecrystallinestackingsequenceisdisturbed,Figs2.8(e)and2.8(f).Thesemaybethoughtofastheabsenceofaplaneofatoms(intrinsicstackingfaults)ortheinsertionofrowsofatomsthatdisturbthearrangementofatoms(extrinsicstackingfaults).IntrinsicandextrinsicstackingfaultsareillustratedschematicallyinFigs2.8(e)and2.8(f),respectively.NotehowtheperfectABCABCstackingofatomsisdisturbedbytheinsertionorabsenceofrowsofatoms.2.3.4VolumeDefectsVolumedefectsareimperfectionssuchasvoids,bubble/gasentrapments,porosity,inclusions,precipitates,andcracks.Theymaybeintroducedintoasolidduringprocessingorfabricationprocesses.AnexampleofvolumedefectsispresentedinFig.2.9.ThisshowsMnSinclusionsinanA707steel.AnotherexampleofavolumedefectispresentedinFig.1.16(d).This ... Inc.whichisgivensimplybyÀðCAÀCBÞ=r0,thediffusionflux,J,maythenbeexpressedasJ¼D0expÀqkTdCdxð2:9ÞIfwescalethequantityqbytheAvogadronumber,thentheenergytermbecomesQ¼NAqandR¼kNA.Equation(2.9)maythusbeexpressedasJ¼ÀD0expÀQRTdCdxð2:10ÞIfwenowsubstituteD¼ÀD0expÀQRTintoEq.(2.10),weobtaintheusualexpressionforJ,i.e.,JisgivenbyJ¼ÀDdCdxð2:11ÞTheaboveexpressionisFick’sfirstlawofdiffusion.Itwasfirstpro-posedbyAdolfHicksin1855.Itisimportanttonoteherethatthediffusioncoefficientforself-diffusion,D,canhaveastrongeffectonthecreepproper-ties,i.e.,thetime-dependentflowofmaterialsattemperaturesgreaterthan$0.3–0.5ofthemeltingtemperatureindegreesKelvin.Also,theactivationenergy,Q,inEq.(2.10)isindicativeoftheactualmechanismofdiffusion,whichmayinvolvethemovementofinterstitialatoms[Fig.2.11(a)]andvacancies[Fig.2.11(b)].Diffusionmayalsooccuralongfastdiffusionpathssuchasdislocationpipesalongdislocationcores[Fig.2.12(a)]orgrainboundaries[Fig.2.12(b)].This ... associated with the disappearance of smal-ler grains and the enhanced growth of larger grains. Due to the combinedeffects of these factors, a limiting grain size is soon reached. The rate atwhich...
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Tài liệu Mechanical Properties of Engineered Materials P1 pptx
... enter into the problem. The engineermust appreciate the relevant aspects of mechanical behavior at the differentlength scales. Furthermore, the size scale of the structure can affect the mechanical ... understanding of the mechanical properties of mate-rials. It is not intended to be a comprehensive review of all the differentaspects of mechanical properties; such a task would be beyond the capabil-ities ... treatment of the fundamen-tals of the mechanical behavior of materials. The text provides a rigorousreview of the fundamental mechanics aspects of the mechanical behavior of materials.Shackleford,...
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Tài liệu The Electrical Properties of Cancer Cells pptx
... roles of the cell membrane. • The extracellular space and the components of the extracellular matrix (ECM) connect to the cytoskeleton of the cells: The electronic functions of the cells and the ... improve the electrical functions of the ECM. Therefore the composition and degree of toxicity of the ECM-glycocalyx interface will affect the electrical field and the flow of biocurrents in the ... between the inside of the cell and the outside of the cell. The difference is known as the membrane potential. • Because the membrane potential is created by the difference in the concentration of...
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Tài liệu Báo cáo khoa học: Understanding the binding properties of an unusual metal-binding protein ) a study of bacterial frataxin pdf
... resonanceswithout the concomitant appearance of other signalsin other parts of the spectrum. This result could be aconsequence of the paramagnetic properties of Fe(II),or it might arise from the presence of ... Fe3+Addition of Fe2+induced the displacement of severalresonances in the [1H,15N]-HSQC NMR spectrum of CyaY, but the most striking consequence of the addi-tion was the total disappearance of specific ... Details of the superimposition of the hydrophobic core of CyaY (blue) andCyaY–Eu complex (red). The side chains of the CyaY C-terminus rearrange as a long-range effect of binding. The figure...
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Tài liệu Báo cáo khoa học: The kinetic properties of various R258 mutants of deacetoxycephalosporin C synthase doc
... in the apparent Kmvalues for these substrates. The interpretation of these results is complicated because the levels of uncoupling will be variable depending on the mutant and the nature of the ... cosubstratebinding. In the case of the R258K mutant this may beallowed because of disordering of the lysine side-chain, aswas previously observed for the R258Q mutant (Fig. 1) [17].InthecaseoftheR258HmutantitismorelikelythattheFig. ... 2-OGconversion in the absence of a penicillin substrate) in the wild-type enzyme. Functional analysis of R160 and R162 bysite-directed mutagenesis suggests that these two residuesbind the nucleus of the...
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Tài liệu PHYSICAL, CHEMICAL, AND MECHANICAL PROPERTIES OF BAMBOO AND ITS UTILIZATION POTENTIAL FOR FIBERBOARD MANUFACTURING docx
... materials in the cell walls [Sjostrom 1981]. Alpha-cellulose is the main source of the mechanical properties of bamboo and wood [Janssen 1981]. Figure 2-5 presents the holocellulose content of bamboo ... the level of the solution in the flask remained below that of the boiling water. Samples were then removed from the water bath and filtered by vacuum suction into a fritted glass crucible of ... 13separate the fibers. The diluted mixture was then spread evenly on to a transparent glass of 20× 20 cm and another piece of glass was placed on top. The glasses with the fibers were then dried...
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Báo cáo khoa học: The importance of polymerization and galloylation for the antiproliferative properties of procyanidin-rich natural extracts doc
... absorbed in the intestinal tract, and reach the colon mainly intact [27]. They are therefore bio-available to the epithelial cells in the intestinal wall,where procyanidins and other phenolics ... investigated the relationship of different structural factors of procyanidins, such as the mean degree of polymerization and percentage of galloylation, with their antiproliferative potential andtheir ... Department of Health Risk Analysis and Toxicology, Maastricht University, the NetherlandsColorectal cancer is the third most commonly diagnosedcancer in the world and is one of the major causes of cancer-associated...
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Báo cáo khoa học: Effect of oculopharyngeal muscular dystrophy-associated extension of seven alanines on the fibrillation properties of the N-terminal domain of PABPN1 pot
... alanines are likely. The manner in which the number of alanines determines the atomic structure of the fibril and the b-strandarrangements remains to be determined.Yet, knowledge of the structure and ... using the nanoscope analysis software.Chemical stability of fibrils The chemical stability of fibrils was tested after the fibrilla-tion process was completed (no further rise of ANS sig-nals). The ... 2006 The Authors Journal compilation ª 2006 FEBSEffect of oculopharyngeal muscular dystrophy-associatedextension of seven alanines on the fibrillation properties of the N-terminal domain of PABPN1Grit...
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Báo cáo khoa học: "Some Problems in the Mechanical Translation of German" pdf
... taken to be the subject of the clause. This ap- plies to about half of all the instances where the function of the relative pronoun is ambiguous. 2. On the other hand, if the form of the sub- ... be made by the position of the verb because of the rule that in a subordinate clause the verb must normally come at the end. How, then, are we to deter- mine the function of the relative ... shall write the equations in the form which they assume when these units are used.) If, on the other hand, the number of the rela- tive pronoun proves to be identical with that of the following...
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Mechanical properties of solid polymers Constitutive modelling of long and short term behaviour pptx
... Values of a15(σ) obtained from the construction of the master curve in Fig-ure 2.7(b). The second part of the experimental verification of time-stress superposition consists of fitting the shift ... change(s) of the main chain. The rate of conformational changes, i.e. the molecular mobility, is determined to-tally by the thermal energy available in the system. Increasing the thermal energyincreases ... Molecular backgroundIndependent of the stress level or amount of deformation involved, the origin of the deformation of polymer materials lies in their ability to adjust their chain confor-mation...
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mechanical properties of engineered materials
... enter into the problem. The engineermust appreciate the relevant aspects of mechanical behavior at the differentlength scales. Furthermore, the size scale of the structure can affect the mechanical ... 1/3½1120. The diagonal axis of Type I,therefore, enables us to find the Miller–Bravais indices for any of the direc-tions along the axes on the basal plane. The other common type of diagonal ... in all of the electronicpackages that are used in modern electronic devices. Since the reliability of these packages is often determined by the thermal and mechanical prop-erties of the individual...
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Báo cáo khoa học: On the aggregation properties of FMRP – a link with the FXTAS syndrome? pot
... FXR1P and FXR2P. The regions predicted as fibrillo-genic by the WALTZ software [40] are indicated as red crosses.Fig. 2. Summary of the modular structure of FXR proteins (A) and of the constructs ... average diameter of 10 nm (Fig. 6D).They also clustered together and were often found tobe decorated with the uranyl acetate stain. Takentogether these results confirm a marked tendency of FXR constructs ... inhumans. In a previous study, we described the biochemical and biophysicalaggregation properties of constructs spanning the conserved region of FMRP and of two other human fragile X related (FXR) proteins,...
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Báo cáo khoa học: Role of the structural domains in the functional properties of pancreatic lipase-related protein 2 pot
... the affinity of the PLRP2 for micellar sub-strates, and probably allows the interaction of the enzyme with the substrate structure. Whether the motion of the lid promotes the recognition of the ... worksand resulting in the unmasking of the catalytic triad of the enzyme induced by the motion of the flap. The accessibility of the active site can be tested using the ability of an organophosphate, ... domain and bile salt only in the presence of the C2 domain. The inhibition of the activesite serine by E600 needs both the motion of the flapand the recognition of the vehicle in which E600 wassolubilized....
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- properties of autoclaved aerated concrete
- the four modules of the ielts
- the false god of fear
- properties of the autoclaved aerated concrete produced from coal bottom ash
- explain the properties of conductors insulators and semiconductors
- on the mathematical properties of the zernike polynomials
- on the mathematical properties of the structural similarity index
- properties of the discretetime fourier transform pdf
- properties of the discrete time fourier transform
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