The carbon content of transparent exopolymeric particles (TEP) was measured in the laboratory in particles produced by bubbling exudates of the dlaton~ Thalassiosira weissflogij, grown under nitrogen non-limited conditions (N:P = 7). The carbon content of these parhcles ( R P C ) appears to vary as a function of their size according to TEP-C = 0.25 X 10-= r255 (pg C TEP-I), where r is the equiv...

the soil water retention curve (swrc) is a basic characteristic of the determination of soil hydraulic properties, including unsaturated hydraulic conductivity. measurement of this curve is essential to research, thus scientists have focused on indirect methods such as pedotransfer functions and empirical relationships to estimate swrc easily. since there is a close relationship between swrc an...

Fractures play an important role in steam production from geothermal reservoirs. It has been a challenge for a long time to characterize materials with a high density of fractures such as The Geysers rock. Experimental data showed that the capillary pressure curves of The Geysers rock are very different from that of Berea sandstone. Methods to characterize the difference between the two have be...

Fractal-rate behavior is a ubiquitous and important aspect of normal mammalian cochlear-nerve activity, which may well be absent in nerve bers excited by present cochlear prostheses. We propose simple methods for introducing fractal uctuations into a cochlear prosthesis, thus providing the natural statistical character of eighth-nerve ber spike trains. Fractal behavior is ubiquitous in mammalia...

Let A be an n × m matrix with real entries. Consider the set BadA of x ∈ [0, 1)n for which there exists a constant c(x) > 0 such that for any q ∈ Zm the distance between x and the point {Aq} is at least c(x)|q|−m/n . It is shown that the intersection of BadA with any suitably regular fractal set is of maximal Hausdorff dimension. The linear form systems investigated in this paper are natural ex...

We discuss a family of clusters C corresponding to the region whose boundary is formed by a fractional Brownian path y(i) and by the moving average function ỹn(i) ≡ 1 n ∑n−1 k=0 y(i − k). Our model generates fractal directed patterns showing spatio-temporal complexity, and we demonstrate that the cluster area, length and duration exhibit the characteristic scaling behavior of SOC clusters. The ...

We determined the changes in fractal dimensions and spatial correlations of regional pulmonary blood flow with increasing exercise in race horses (n = 4) by using 15-microm fluorescent microspheres. Fluorescence was measured to quantitate regional blood to 1.3-cm(3) samples (n = 1,621-2,503). Perfusion distributions were characterized with fractal dimensions (a measure of spatial variability) a...

This paper puts forward the concept of fractal company is in the process of online shopping. According to the characteristics of the network shopping, the paper establishes the mathematical model of fractal clustering, and uses the fractal dimension to describe and depict Fractal Company. Online shopping is actually the management of the entire supply chain. Based on similar structure of fracta...