A one-year series of hourly average PM10 observations, which was obtained from the urban and national park air monitoring station at Taipei (Taiwan), was analyzed by descriptive statistics and fractal methods to examine the temporal structures of PM10 concentrations. It was found that all PM10 measurements exhibited the characteristic right-skewed unimodal frequency distribution and long-term m...

The structure of carbon black (CB) is investigated during its oxidation by O2 at 550 and 800 °C thermogravimetric analysis, microscopy, N2 adsorption X-ray diffraction (XRD). That way, the dynamics porosity crystallinity surface internal are elucidated, for first time to best our knowledge. At °C, takes place largely on CB surface. This increases specific area, SSA, from 240 about 453 m2/g, clo...

In this paper, the fractal characteristics of goose down assembly are described by determining the pore area fractal dimension and the tortuosity fractal dimension. The goose down assembly, filled with mass of down fibers and pores, is loose and ductile. The pores are varying shapes and sizes, and distribute unevenly. Firstly, micro computed tomography is used to observe the internal microstruc...

Material surfaces tend to show roughness that has fractal characteristics, and this affects the nature of contacts between surfaces. In particular, as smaller and smaller scales of roughness are added to a model, the areas in contact break up to form larger numbers of smaller contacts. The total area in contact diminishes towards zero. What this means for the constriction resistance is examined...

The objective of this paper is to examine the development of the urban form of the city of Olomouc since the 1920s in terms of fractal dimension, and to link the observation with two other descriptors of shape – area and perimeter. The fractal dimension of built-up areas and fractal dimension of the boundary of the city are calculated employing the box-counting method; the possibilities of thei...

This study combines data-driven-based logistic functions with prediction–area (P–A) plot for delineating target areas of orogenic Au deposits in the eastern margin Qinling metallogenic belt, central China. First, appropriate geological and geochemical factors were identified, optimized, transformed into a series fuzzy numbers range 0–1 through function order to determine evidence layer prospect...

The fractal structure of the aggregates in food protein gels was analyzed. Three kinds of food protein gels were prepared: (1) β-lactoglobulin (β-LG) gel; (2) 11S soybean globulin gel; and (3) caseinate gel. From the concentration dependence of the gel elasticity, the fractal dimensions Df of the aggregates in the gels were evaluated, according to the theory of Shih et al. These gels showed the...

This work aims at figuring out the spatial relationships between the geophysical and geological models in a case study pertaining to copper-sulfide mineralization through an integrated 3D analysis of favorable target. The Ghalandar Skarn-Porphyry Cu Deposit, which is located in NW Iran, is selected for this research work. Three geophysical surveys of direct current electrical resistivity and in...