Hasil untuk "Chemical engineering"

S. Patankar

Guanying Chen, I. Roy, Chunhui Yang et al.

P. Hazelton, B. Murphy

Guanying Chen, Hailong Qiu, P. Prasad et al.

Applications in Theranostics Guanying Chen,*,†,‡ Hailong Qiu,†,‡ Paras N. Prasad,*,‡,§ and Xiaoyuan Chen* †School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China ‡Department of Chemistry and the Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, State University of New York, Buffalo, New York 14260, United States Department of Chemistry, Korea University, Seoul 136-701, Korea Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892-2281, United States

T. Kotas

W. Lai, D. Rubin, E. Krempl

R. Borup, J. Meyers, B. Pivovar et al.

L. Nair, C. Laurencin

J. Bailey

Chi-Tsong Chen

D. Nield, A. Bejan

L. H. Thompson, L. Doraiswamy

B. Chithrani, A. Ghazani, W. Chan

A. Svensson, Elin Nicklasson, Elin Nicklasson et al.

E. Toberer, A. Zevalkink, G. Snyder

Qizhi Chen, Shuling Liang, G. Thouas

D. Schlom, Long-Qing Chen, C. Fennie et al.

Zhuyan Zhang, Zhaopeng Deng, L. Huo et al.

Numporn Thungphotrakul, Kittipong Rattanaporn, Patcharin Jarastrakull et al.

Lang Lu, Feng Wang, Jun Mu et al.

Abstract In-situ stress is a significant factor in the occurrence of dynamic disasters in coal mines. Measured data from 22 measuring points in the Luxin mining area was analyzed to investigate the distribution of in-situ stress and regional structure action. The results reveal that in-situ stress in the Luxin mining area is predominantly a structure stress, it is mainly manifested in the medium and low stress levels. The maximum horizontal principal stress, minimum horizontal principal stress, and vertical principal stress are 5.47–18.8 MPa, 3-10.15 MPa, and 4.8–12.5 MPa, respectively, all of them are positively correlated with the burial depth. As the burial depth increases, the discreteness of the maximum and minimum horizontal principal stresses first increases and then decreases. The lateral pressure ratio varies from 0.6 to 2.1, gradually approaching 1 with increasing depth, and the discreteness gradually decreases with the increase of depth and its discreteness gradually decreases. The differences between maximum and minimum horizontal principal stress range from 2.47 to 9.6 MPa. The predominant direction of the maximum horizontal principal stress in the Luxin mining area is NW. The influence of the F1 and F2 reverse faults alters this direction, with seven measuring points indicating a maximum horizontal principal stress direction of N (21.4°-78.6°) E. From the axis of the Xishan anticline to the bottom of the flanks, the maximum horizontal principal stress generally increases. The F1 and F2 reverse faults cause stress redistribution, leading to fluctuations in the maximum horizontal principal stress in the hanging wall region of these faults. The distribution of in-situ stress in Luxin Mining Area is the result of the combined action of the Xishan anticline, faults and torsional stress in the north-south direction. The distribution of in-situ stress in Luxin Mining Area is the consequence of the combined effect of the Xishan anticline, faults, and torsional stress in the north-south direction. Based on the measured in-situ stress data from Shadunzi coal mine, a roadway support scheme for the S4103 working face was developed, which improved roadway stability.