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Scientific Research Training for Prospective Mathematics Teachers in China
Cao, Shangmin,Cao, Pin 한국수학교육학회 1999 수학교육연구 Vol.3 No.1
This paper presents a summary of the Scientific Research Training (SRT) in Liaocheng Teachers University, which is a representative of normal universities and teachers' colleges in China. There is a survey on the situation of SRT in China systematically and historically. Tentative ideas about SRT in future are targeted at the teachers and heads of departments in China.
Zahra Audrey,Gao Shangmin,Park Jong-Moon,Shin Soo-Jeong 한국펄프.종이工學會 2022 펄프.종이기술 Vol.54 No.3
Rice is widely produced; however, large quantities of non-edible biomass are also generated during its production, mainly straw and hulls. These lignocellulosic materials have great value potential but are less used than other biomass resources. We produced cellulose nanofiber (CNF) from rice husks through delignification (as chlorine dioxide bleaching), pretreatment (as carboxymethylation substitution reaction), and nanofiber-making processes (as supermass-collider grinding and high-pressure homogenization). The rheological properties of rice-hull cellulose nanofiber were investigated to determine the relationship between carboxyl content, number of grinding, and high-pressure homogenization to rheological properties of rice-husk CNF gels. Increased carboxymethylation and mechanical treatments lead to higher viscosity, better hydrogel strength, and water retention value (WRV). Further mechanical processes decreased the viscosity and hydrogel strength after attaining the maximum value. For high-quality hydrogel production, optimum pretreatment and mechanical processes are required as pretreatment to DS 0.3 for carboxymethylation and optimum grinding and high-pressure homogenization combination.
Revitalization and Re-cultivation of Vegetation in Karst Region Through Animal
Zhiqiang Lai,Xian-feng Yi,Na Yao,Xiao-Yan Cai,Yongliang Liang,Shize Qin,Yuanrong Chen,Shangmin Qin,M. Pogaonik 한국초지조사료학회 2009 한국초지조사료학회 학술대회논문집 Vol.2009 No.08
From 2002 to 2007, two different systems (shrubs and grasses) were established to raise appropriate ruminants for the purpose of improving biological diversity and fragile ecological environment in the karst-areas through grazing. The objective was to find out a novel way to promote the application of ecological restoration and reconstruction, and the agricultural economy could develop in sustainable way in the karst areas in Guangxi and similar areas in Southwest China.