http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Zhenming Shi (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
( Yang Jiangtao ),( Shi Zhenming ),( Peng Ming ),( Zhu Chunan ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
On October 10, 2018, a landslide with volume about 2.2×10<sup>6</sup>㎥ occurred in Baige Village, Sichuan Province, China, which blocked the Jinsha River and formed a landslide dam with height of 120m, width of 200m and a storage capacity of about 1.5×10<sup>8</sup>㎥. The reservoir water was naturally discharged and its flood had no effect on the downstream area. On November 3, the second landslide with volume about 8.5×10<sup>6</sup>㎥ occurred in the same point, which further increased the original dam width nearly 50m, and formed a landslide dam with height of 170m, and its storage capacity reached 5.24×10<sup>8</sup>㎥. Due to the large storage capacity and the uncertainty of the breaching of the dam, and the discharge flood generated by its breach can bring great threat to the lives and property in the downstream areas. This paper compares the DABA with the measured data to obtain its discharge flow curve, and further based on Hec-Ras to simulate the flood evolution of Baige landslide dam, and the downstream submergence range has been determined. Finally, the Bayesian method is used to quantify the downstream individual risk and loss of life. The results show that Shangjiang and Judian Town were the most seriously affected. In addition, the quantitative risk assessment results show that the amount of risk is negatively correlated with the distance from the dam site. The casualty rate is low due to the submergence area is basically located in the downstream. However, the property loss of local infrastructure and farmland is more serious.
-
Experimental Measurement and Numerical Computation of Geogrid Tension in Centrifuge Modeling
Jianfeng Chen,Songbo Yu,Jianfeng Xue,Zhenming Shi 대한토목학회 2011 KSCE JOURNAL OF CIVIL ENGINEERING Vol.15 No.8
Tension measurement of geogrid is essential in reinforcement mechanisms studies. Geogrid is a nonlinear flexible material with large apertures, it is difficult to measure the tensions mobilized in geogrid, especially in scaled-down geogrid in centrifuge modeling. In this study, strain gauges were glued onto the surface of model geogrid with epoxy resin and were calibrated through multi-stage and continuous tensile tests. Generalized Kelvin model was used to fit the constitutive curves from the tensile tests. The model is capable to describe time-dependent and nonlinear behavior of the composite material of epoxy resin and model geogrid. Based on generalized Kelvin model, tensions in the model geogrid were measured in a centrifugal modeling of a reinforced embankment on soft clay. A finite element model was developed to simulate the centrifuge modeling and a comparison was carried out between the computed and measured tensions. The numerical results basically captured the measured reinforcements, indicating that the method of reinforcement measurement proposed in this study is appropriate and reasonable.
-
Jianfeng Chen,Junxiu Liu,Jianfeng Xue,Zhenming Shi 대한토목학회 2014 KSCE JOURNAL OF CIVIL ENGINEERING Vol.18 No.7
A 7.6 m high reinforced embankment-wall system was constructed in stages on very thick soft clay. The reinforced structure incurred a deep-seated global failure at the end of backfill loading. The Strength Reduction Method (SRM) and the Limit Equilibrium Method (LEM) were employed to analyze the stability of the structure. It was found that the SRM captured the deep-seated global failure of the structure through a coupled mechanical and hydraulic Finite Element (FE) modeling. The stability of the reinforced structure was much underestimated or overestimated by the LEM using unconsolidated-undrained or consolidated-undrained shear strength values. However, the stability of the structure could be still captured by the LEM with the increased shear strength values assigned to the consolidated zone directly beneath the reinforced structure and with the unconsolidated-undrained shear strength values assigned to the unconsolidated zone beyond the structure. In practice, both the SRM and the LEM are recommended for stability analyses of geosynthetic-reinforced structures on soft ground considering hardening of the soil so that the results from the two methods can be cross-examined.
-
Durable N-halamine Antibacterial Cellulose Based on Thiol-ene Click Chemistry
Zhipeng Ma,Maoli Yin,Mengshuang Zhang,Zhenming Qi,Xuehong Ren,Tung-Shi Huang 한국섬유공학회 2019 Fibers and polymers Vol.20 No.2
Antibacterial cotton fabrics were prepared with 3-allyl-5,5-dimethylhydantoin (ADMH) by UV photoinitiated thiol-ene click chemistry after 3-mercaptopropyltriethoxysilane (MPTES) was introduced on the surface of cotton fabrics. The treated cotton fabrics were characterized by SEM, FT-IR and EDS. After chlorination with diluted sodium hypochlorite, the treated samples showed good antibacterial efficacy against S. aureus and E. coli O157:H7. About 106 of S. aureus and E. coli O157:H7 could be completely inactivated within 1 min and 5 min of contact, respectively. Compared to the control samples, the antibacterial treatment method used in this study only had a minor effect on the tensile strength of cotton fabrics. Besides, the treated cotton fabrics showed good storage stability and 77 % of the active chlorine remained after 30 days. After exposure to bleach solution, almost all of the active chlorine was restored. The prepared antimicrobial cotton fabrics showed good washing and UV light stability.
-
Xiaomei Qin,Sheng Huang,Yanqing Liu,Mingdi Bian,Wuliang Shi,Zecheng Zuo,Zhenming Yang 한국식물학회 2017 Journal of Plant Biology Vol.60 No.1
Aluminium (Al) toxicity is a primary limitation of crop production in acid soils, which take over 40% of arable soil worldwide. In previous studies, a series of genes have been identified to regulate the plant Al resistance or tolerance. However, none of E3 ubiquitin ligase, the key factor of ubiquitination that plays an important role in plant growth and development, has been characterized for Al response in Arabidopsis. In this study, an E3 ubiquition ligase gene AtATRF1 (Al Tolerance RING Finger 1), a homolog of RAD18 interacting RAD6 to repair the damaged DNA in human and yeast, is isolated from Arabidopsis. It encodes a predicted protein of 296 amino acids with a C3HC4 type RING finger domain. The expression of AtATRF1 is induced by Al, and the transgenic plant overexpressing AtATRF1 enhances the Al tolerance. Similar as RAD18, the AtATRF1 locates in nucleus and regulates the expression of AtATR, which involves in DNA repair and Al response in Arabidopsis. Our results indicate that nuclearlocated AtATRF1 may interact and ubiquitinate the transcriptional regulator of AtATR to mediate the Al tolerance of Arabidopsis.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
