Yak Hair Fibers Surface Modification Treated by Plasma January 2006 in “ Journal of Liaoning University of Petroleum & Chemical Technology ” Jianhua Wang We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on en.cnki.com.cn →