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Critical temperature of the Ising ferromagnet on the fcc, hcp, and dhcp lattices
North-Holland 2015 PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIO Vol.419 No.-
By an extensive Monte-Carlo calculation together with the finite-size-scaling and the multiple histogram method, the critical coupling constant (K<SUB>c</SUB>=J/k<SUB>B</SUB>T<SUB>c</SUB>) of the Ising ferromagnet on the fcc, hcp, and double hcp (dhcp) lattices were obtained with unprecedented precision: K<SUB>c</SUB><SUP>fcc</SUP>=0.1020707(2), K<SUB>c</SUB><SUP>hcp</SUP>=0.1020702(1), and K<SUB>c</SUB><SUP>dhcp</SUP>=0.1020706(2). The critical temperature T<SUB>c</SUB> of the hcp lattice is found to be higher than those of the fcc and the dhcp lattice. The dhcp lattice seems to have higher T<SUB>c</SUB> than the fcc lattice, but the difference is within error bars.
Review of Long-Term Creep Behaviors of Geosynthetic Reinforcements by Strain Compatibility
Jungjo Yuu(유중조),Yong Joon Lee(이용준),Sang Hun Park(박상훈),Han-Yong Jeon(전한용) 한국지반신소재학회 2013 한국토목섬유학회 학술발표회 Vol.2013 No.4
To calculate the long-term allowable strength of geosynthetic reinforcement, replacement method was recommended. In isochronous curve at given time, we can read the allowable strength at allowable creep strain. The allowable strain gets from specification by directors or manufacturers according to the allowable displacement of reinforced structures. The allowable strength can be determined in relation to the allowable horizontal displacement each structures case by case. The effect of installation damage on isochronous behaviors of geosynthetic reinforcement was little. From the analytical consideration, the strain compatibility was recommended to determine long-term allowable strength of geosynthetic reinforcements considering tensile deformation between reinforcement and soil.
An Experimental Study on the Biodegradability of PLA/PBAT blend for Green Geosynthetic Applications
J. Yuu,J. N. Im,H. Y. Jeon 한국토목섬유학회 2011 한국지반신소재학회 학술발표회 Vol.2011 No.11
Green geosynthetic is defined as a geosynthetic which is made of natural plastic (bioplastic), and shows eco-friendly features. For wide usage of green geosynthetic, the serviceability related to biodegradability of raw material should be certified. In this study, PLA blends for green geosynthetics where has biodegradable characteristics were evaluated. Standard compost media was selected as the exposure condition to PLA and its blend for testing the bio-degradability. Tensile strength retention of PLA and blends were recorded as long-term behavior of green geosynthetics and discussed.