نتایج جستجو برای: concentration volume fractal model

تعداد نتایج: 2693213  

2012
Kittiwann Nimkerdphol Masahiro Nakagawa

Biological reactions of individuals of a testing animal to toxic substance are unique and can be used as an indication of the existing of toxic substance. However, to distinguish such phenomenon need a very complicate system and even more complicate to analyze data in 3 dimensional. In this paper, a system to evaluate in vitro biological activities to acute toxicity of stochastic self-affine no...

Journal: :journal of water sciences research 2010
s.h ghoreishi m.r majdzadeh tabatabai

sediment flushing of reservoirs is an operational technique, whereby previously accumulated sediments in the reservoirs are hydraulically removed by accelerated flow when the bottom desiltingoutlets of the dam are opened. in this research, the process of sediment flushing is simulated by a three dimensional numerical model in which sediment and flow interaction are reflected in the reservoirs. ...

Journal: :Journal of the Visualization Society of Japan 2008

2015
Charles A. Price Paul Drake Erik J. Veneklaas Michael Renton

Running headline: Flow similarity and quarter power scaling Summary  The origin of allometric scaling patterns that are multiples of ¼ has long fascinated biologists. While not universal, scaling relationships with exponents that are close to multiples of ¼ are common and have been described in all major clades. Foremost among these relationships is the ¾ scaling of metabolism with mass which ...

Journal: :Applied Mathematics and Computation 2013
André Ricardo Backes Odemir Martinez Bruno

Texture plays an important role in computer vision. It is one of the most important visual attributes used in image analysis, once it provides information about pixel organization at different regions of the image. This paper presents a novel approach for texture characterization, based on complexity analysis. The proposed approach expands the idea of the Mass-radius fractal dimension, a method...

2001
Jeremy A. Redman Mary K. Estes Stanley B. Grant

In this paper, we characterize the filtration and deposition profiles of a recombinant analog of Norwalk virus, an important waterborne pathogen, in packed beds of saturated quartz sand under both ‘clean-bed’ and ‘dirty-bed’ conditions. Under clean-bed conditions with NaCl as the electrolyte, the retained Norwalk virus particles decline like a power-law with depth. The power-law decay in retain...

ببرنژاد زیارت, هانیه, ذوالفقاری, علی اصغر, هاشمی, علی اصغر, کیانیان, محمدکیا, یزدانی, محمدرضا,

The objective of current study was to invstigate the accuracy of Tyler and Wheatcraft, Bird et al. and Kravchenko and Zhang fractal models in describing particle size distribution (PSD) of sediment in 14 successive check dams for two depths of 0-15 and 15-30 cm. Sediment PSD were determined in 28 samples using hydrometer method . The referred fractal models were fitted on sediments PSD data. Re...

Journal: :Revista Mexicana De Fisica 2022

In the present study, approximate fractal morphometry of spherical-type essential oil microemulsions was performed. The geometric characterization carried out by a recently published continuous half-fractal model which allowed to as systems in their stable thermodynamic equilibrium phase with high degree homogeneity. Regarding characteristic homogeneity an equation obtained roughly describe vol...

In this study, a fractal, Y-shaped dual-mode resonator bandpass filter (BPF) with input-output cross-coupling is introduced. A parallel-coupling feed structure with a cross coupling has been used to generate two transmission zeroes (TZs) near the lower and upper cutoff frequency that can effectively improve the passband edge selectivity. Also, a fractal shaped based on conventional diamond and ...

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