Showing papers by "Wei Ma published in 2006"
TL;DR: Wang et al. as discussed by the authors proposed a new approach to alleviate the effect of global warming and engineering construction on permafrost by cooling the roadbed and positively protecting the permaffrost measures for cooling roadbed by adjusting solar radiation, conduction, and convection are studied and applied to prevent ground ice from thawing.
Abstract: Widespread warm permafrost with a high ice content is a key problem for the roadbed stability of the Qinghai–Tibet Railway A new approach is proposed to alleviate the effect of global warming and engineering construction on permafrost by cooling the roadbed and positively protecting the permafrost Measures for cooling the roadbed by adjusting solar radiation, conduction, and convection are studied and applied to prevent ground ice from thawing and to ensure roadbed stability in permafrost regions The results of monitoring permafrost embankments at Beiluhe and along the Qinghai–Tibet Railway show that the measures adopted for cooling the roadbed are very effective in raising permafrost table and reducing the soil temperature
35 citations
TL;DR: In this article, the energy dispersive spectra (EDS) analysis was used to determine the distribution of the major cladding element in the plasma-processed layers, for which the microstructure observations and hardness measurements were also performed.
17 citations
TL;DR: In this article, two different powder-feeding methods were tested, one with carrier gas called the powder injection method, and the other without carrier gas, called powder transfers method, in order to investigate the influences of processing conditions on the morphologies of the surface modified layers, and they demonstrated that the cross-section of the clad layers consists of two distinct microstructural regions, in which the Al2O3 phases exhibit different growth mechanisms.
2 citations