Comprehensive Fractal Description of Porosity of Coal of Different Ranks

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="490318.fig.002a" src="https://static.hindawi.com/articles/tswj/volume-2014/490318/figures/490318.fig.002a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Number 1 coal sample</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="490318.fig.002b" src="https://static.hindawi.com/articles/tswj/volume-2014/490318/figures/490318.fig.002b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Number 2 coal sample</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="490318.fig.002c" src="https://static.hindawi.com/articles/tswj/volume-2014/490318/figures/490318.fig.002c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>Number 3 coal sample</td></tr></table></td></tr><tr class="fig-image" id="d"><td><img alt="490318.fig.002d" src="https://static.hindawi.com/articles/tswj/volume-2014/490318/figures/490318.fig.002d.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(d) </b>Number 4 coal sample</td></tr></table></td></tr></table>

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The Scientific World Journal

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Figure 2

Figure 2: Comprehensive Fractal Description of Porosity of Coal of Different Ranks 