Distribution pattern, dynamics

Also on the nucleic acid field, it has been shown95 that the distribution pattern of NH2/NH3 + /OH groups in natural aminoglycosides could indirectly influence their RNA binding properties and therefore their antibiotic functions. Indeed, the number and location of these polar groups is essential to modulate the conformation and dynamics of the glycoside with the concomitant implication for the RNA recognition process. 

The dynamical parameters Akik2k, together with the corresponding angular factors, then define the angular distribution pattern represented in equ. (4.86b). 

Abstract A two-dimensional microscale (5 cm resolution) sampler was used over the course of a phytoplankton spring bloom dominated by Phaeocystis globosa to investigate the structural properties of chlorophyll a and seawater excess viscosity distributions. The microscale distribution patterns of chlorophyll a and excess viscosity were never uniform nor random. Instead they exhibited different types and levels of aggregated spatial patterns that were related to the dynamics of the bloom. The chlorophyll a and seawater viscosity correlation... 

The histological criteria of chronic hepatitis are (1.) liver cell damage, (2.) inflammatory infiltration, and (S.) fibrosis formation. These chronic inflammatory reactions affect firstly the portal field, then the periportal region (i.e. zone 1) and finally the liver lobule. Such reactions constitute a dynamic process, whereby the intensity of the above-mentioned criteria as well as their topographical distribution pattern in the portal, periportal and azinar area vary considerably. (14, 16)... 

Owing to the orientation dependence that it imparts to the NMR frequency, the chemical-shift anisotropy (CSA) has proven useful not only in studies of slow dynamics but also for characterizing segmental orientation distributions and fast segmental reorientations. While static powder patterns provide this CSA information in the most accessible form, site resolution by MAS is indispensable in all but the simplest unlabeled systems. The two requirements can be combined in two-dimensional (2D) separation experiments. Recently, a robust sequence, termed separation of undistorted powder-patterns by effortless recoupling (SUPER), was introduced that makes CSA measurements under standard MAS conditions routine.28 It enables identification of functional groups and measurements of orientation distributions, segmental dynamics, and conformations. 

Besides the decreasing trend of Hg contents in surface sediments, this hot spot is still active, that is, serving as a source for Hg-rich suspensions participating in a basinwide natural tracer experiment. The 2005 mapping shows a very vivid example of a mercury distribution pattern (geochemical aureole) reflecting the sediment dynamics, including the effects of near-bottom currents. 

The distribution patterns shown in Fig. 11 can briefly be explained as follows. Stratospheric ozone formed by photochemical processes is transported in poleward direction by atmospheric motions. This circulation is particularly strong in winter and spring months when stratospheric air moves downward over polar regions. At the same time the lower stratosphere over the tropics is characterized by a slow updraft (Brewer, 1949). Thus, stratospheric dynamics lead to the accumulation of ozone rich air in the lower polar stratosphere. It should be recalled here that at this altitude 03 is a conservative property of the air. During the late spring and summer, especially, the stratospheric 03 reaches the troposphere first of all through the tropopause gaps. In the troposphere this species is removed from the air by various sinks, as this will be shown in the next section. 

Chen, J., Xie, P., Zhang, D., Ke, Z. and Lei, H. In situ studies on the distribution patterns and dynamics of microcystins in a biomanipulation fish—bighead carp (Aristichthys nobilis). Environ. Pollut, 147(1), 150, 2007. 

The dynamic distributed load that corresponds to the vertical ground reaction force can be evaluated with the use of a flat, two-dimensional array of small piezoresistive sensors. OveraU resolution of the transducer is dictated by the size of the individual sensor ceU. Sensor arrays configured as shoe insole inserts or flat plates offer the clinical user two measurement alternatives. Although the currently available technology does afford the clinical practitioner better insight into the quahtative force distribution patterns across the plantar surface of the foot, its quantitative capabiKty is limited because of the challenge of caKbration and signal drift (e.g., sensor creep). 

Yu, E., Dem yantseva, N.P., Lysogorskaya, V.V., Klyubin, S., Zaitseva, V. A dynamic light scattering study of the temperature dependence of the size-distribution pattern and aggregation stabihty of sulfate lignin and wood resin in aqueous alkali solution. Russ. J. Appl. Chem. 75(1), 149-15 (2002)... 

Teifke A, Behr O, Schmidt M et al (2006) Dynamic MR imaging of breast lesions correlation with microvessel distribution pattern and histologic characteristics of prognosis. Radiology 239 351-360... 

In the quarter-scale dynamic series of tests these general trends were repeated, with some modifications in the over-all temperature distribution patterns, as indicated in Fig. 7. For the transient programed acceleration runs, sharp temperature gradients occurred near the top of the pool and, simultaneously, a significant temperature rise occurred throughout e depth of the liquid. For constant high-acceleration runs, little change in curve shape from the static case was noted. 

Our understanding of the development of oscillations, multi-stability and chaos in well stirred chemical systems and pattern fonnation in spatially distributed systems has increased significantly since the early observations of these phenomena. Most of this development has taken place relatively recently, largely driven by development of experimental probes of the dynamics of such systems. In spite of this progress our knowledge of these systems is still rather limited, especially for spatially distributed systems. 

Hollow Sprays. Most atomizers that impart swid to the Hquid tend to produce a cone-shaped hoUow spray. Although swid atomizers can produce varying degrees of hoUowness in the spray pattern, they aU seem to exhibit similar spray dynamic features. For example, detailed measurements made with simplex, duplex, dual-orifice, and pure airblast atomizers show similar dynamic stmctures in radial distributions of mean droplet diameter, velocity, and Hquid volume flux. Extensive studies have been made (30,31) on the spray dynamics associated with pressure swid atomizers. Based on these studies, some common features were observed. Test results obtained from a pressure swid atomizer spray could be used to iUustrate typical dynamic stmctures in hoUow sprays. The measurements were made using a phase Doppler spray analyzer. 

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