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358<br />

► Paraffin are absorbed into <strong>perlit</strong>e . by vacuum method to prepare paraffin/expanded <strong>perlit</strong>e<br />

shape-stabilized PCM. ► The prepared paraffin/expanded <strong>perlit</strong>e shape-stabilized PCM prepared . by<br />

VA has more desirable shape-stability than that prepared . by FA method. ► The melting<br />

temperature of the paraffin/expanded <strong>perlit</strong>e shape- bili ed C i 2 11 °C, d he l e he<br />

of it is 147.92 J/g. ► The adsorption of paraffin makes the thermal conductivity coefficient of the<br />

expanded <strong>perlit</strong>e/gypsum decreased and has little influence on the bending and compressive<br />

strength of the gypsum-based heat storage and preservation material.<br />

83<br />

Kinetics and mechanisms of pH-dependent Mn(II) reactions in plant-growth medium Original<br />

Research Article<br />

Soil Biology and Biochemistry, Volume 40, Issue 11, November 2008, Pages 2787-2795<br />

A. Silber, B. Bar-Yosef, I. Levkovitch, L. Kautzky, D. Minz<br />

84<br />

Variations in hydration within <strong>perlit</strong>ised rhyolitic lavas—evide e f o o f j ull, el d igi l<br />

Research Article<br />

Journal of Volcanology and Geothermal Research, Volumes 223–224, 15 April 2012, Pages 64-73<br />

J.S. Denton, H. Tuffen, J.S. Gilbert<br />

► We examine the fracture populations and total volatile contents of Icelandic lavas. ► Increased<br />

<strong>perlit</strong>isation is accompanied . by increased hydration . by meteoric water. ► Perlitic beads follow a<br />

log-normal size distribution. ► Hydration and <strong>perlit</strong>isation decrease with distance from the external<br />

water source. ► Major fracture spacing increases with distance from the outcrop margin.<br />

85

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