Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Initiation criterion

For smoothly accelerating wavefronts, the initiation criterion is that the peak in the pres-sure-Lagrange distance profiles overtakes the wavefront... [Pg.240]

Parameters in the craze initiation criterion of Sternstein et al. [24] Parameters in the craze initiation criterion of Oxborough and Bowden [26] Critical craze thickness Craze length... [Pg.197]

The cohesive surface considered in the foregoing is based on observations made under quasistatic conditions. In particular, the incubation time for craze initiation is neglected and a critical stress state for craze nucle-ation is used (Eq. 11). For dynamic loading, a time-dependent craze initiation criterion is to be included in the kinetics, since the characteristic timescale associated with the loading can be comparable to that involved in the craze nucleation process. If the time for craze initiation is accounted for, another timescale is involved in the competition between crazing and shear yielding that determines whether or not crazing takes place. Therefore, a switch... [Pg.231]

From the assignment of the hyperhne shifted signals of Cu(II) plastocyanin, azurin, and stellacyanin (Bertini et al., 1999, 2000), information on the electron delocalization onto the metal ligands was gained hy calculating the contact and pseudocontact contrihutions to the hyperhne shifts. In any case, since the magnetic anisotropy of the Cu(ll) ion is low, the observed shifts can be approximated to the contact contribution, which can be used as an initial criterion to compare the electron spin density on the different nuclei and in the various proteins. [Pg.419]

A craze is supposed to initiate by a stress and temperature controlled mechanism and the initiation criterion is motivated by Stemstein s [10] classical work and is taken as... [Pg.157]

The size of the therapeutic transcription unit is many times employed as an initial criterion to focus vector choice. This category also includes a given vector s ability to harbor multiple transcription units, thereby potentially affording reconstitution of a complex biochemical pathway (i.e., dopamine biosynthesis for Parkinson s disease). Potential applications for several presently available vector platforms are restricted by insert size limitations and are sometimes excluded if multigene delivery is a prerequisite for therapy. [Pg.709]

An important initial criterion is thus to enhance the stability of these interactions.13 At the same time, the number of nonspecific binding sites will be minimized since there will be a reduction in the amount of free nonassociated functional monomer. However, varying these synthesis-related factors will also affect the morphology of the materials at a meso and macroscopic level,14 which in turn determine their kinetic properties, e.g., diffusional mass transfer limitations, size exclusion effects, bleeding. [Pg.176]

Detecting and identifying an aerosolized or contaminated biological agent before contact is made is referred to as remote or standoff detection." With aerosols, the initial criterion for monitoring and surveillance of potential biological agent at a... [Pg.45]

A fmther relationship is needed to define damage initiation this is done using a the quadratic damage initiation criterion [24]... [Pg.133]

Thus as time passes a sensed heartbeat may fall into (i) a VF zone and be counted as a "VF" event, (ii) a VT zone, if present, and be counted as a "VT" event, or (iii) a ventricular sensing zone and be counted as a "VS" event. Once a beat is classified this process is repeated for each subsequent sensed ventricular heartbeat. Classification in a St Jude ICD also takes into account an average of the time interval of the three prior heartbeats in order to assign a ventricular heartbeat into a VF, VT, or VS zone. If enough beats are classified over time in a VF and/or VT zone, then the initial criterion for tachycardia detection may be satisfied. What constitutes "enough beats" is determined by the manner that the ICD counts and how the ICD has been programmed. [Pg.53]


See other pages where Initiation criterion is mentioned: [Pg.178]    [Pg.305]    [Pg.301]    [Pg.35]    [Pg.175]    [Pg.228]    [Pg.480]    [Pg.330]    [Pg.57]    [Pg.160]    [Pg.164]    [Pg.73]    [Pg.731]    [Pg.480]    [Pg.139]    [Pg.306]    [Pg.348]    [Pg.362]    [Pg.175]    [Pg.228]    [Pg.558]    [Pg.214]    [Pg.50]    [Pg.28]    [Pg.864]    [Pg.207]    [Pg.192]    [Pg.209]   


SEARCH



Criterion initiators

© 2024 chempedia.info