Results 51 to 60 of about 681,202 (166)

Calculation of Blasting Damage Zone Radius of Different Charge Structures in Burnt Rock

Applied Sciences
The radius of the failure area after a blasting fracture process of burnt rock is affected by joint fissures, does not conform to the existing theoretical calculation formula and the distribution law of the failure area also changes. The fracture area is
Zhengzhao Jia, Hongjie Li, Wei Li, Jie Yan   +3 more
doaj   +1 more source

Structure–charge relationship – the case of hematite (001)

Faraday Discussions, 2015
We present a multidisciplinary study on the hematite (001)–aqueous solution interface, in particular the relationship between surface structure (studiedviasurface diffraction in a humid atmosphere) and the macroscopic charging (studiedviasurface- and zeta-potential measurements in electrolyte solutions as a function of pH).
Lützenkirchen, J., Heberling, F., Supljika, F., Preocanin, T., Kallay, N., Johann, F., Weisser, L., Eng, P. J.   +7 more
openaire   +6 more sources

Research on Optimal Charge Structure Selection and Active Control Methods for Subgrade Bench Blasting Based on Multi‐Objective Optimization

Energy Science & Engineering
To reduce the peak vibration velocity (PPV) of subgrade bench blasting vibration, the control variable method was used to analyze the blasting effect of different charging methods.
Sun Yong, Zhang Zhongshuai, Tian Chenglin, Wang Qingbiao, Shi Zhenyue, Wang Keyong   +5 more
doaj   +1 more source

Charge transfer-tuned magnetism in Nd-substituted Gd5Si4

AIP Advances, 2018
We report a charge-transfer mechanism in tuning of magnetism of Nd-substituted Gd5-xNdxSi4 (x=1 and 2.5) compounds. The X-ray absorption near edge structure measurements demonstrated that Nd substitutions for Gd induce charge transfer of 5d electrons ...
R. H. Kou, J. Gao, Y. Ren, B. Sanyal, S. Bhandary, S. M. Heald, B. Fisher, C.-J. Sun   +7 more
doaj   +1 more source

Multiple charge beam dynamics in alternate phase focusing structure

Physical Review Special Topics. Accelerators and Beams, 2014
Asymmetrical alternate phase (A-APF) focusing realized in a sequence of 36 superconducting quarter wave resonators (QWRs) has been shown to accelerate almost 81% of input uranium beam before foil stripper to an energy of 6.2  MeV/u from 1.3  MeV/u.
S. Dechoudhury, Alok Chakrabarti, Y.-C. Chao   +2 more
doaj   +1 more source

Research process and hotspot prediction of deep-hole presplitting blasting technology in China’s mines

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
The concept and mechanism of the deep-hole presplitting blasting are expounded in detail. Based on China's annual coal production data and the number of papers published on the theme of deep-hole presplitting blasting, the research process of deep-hole ...
Dong-yin Li, Ming-liang Li, Shen Wang, Hong-wei Cui, Guo-yan Li, Zhen-hua Li, Hong-bin Li, Shuai Liu, Zhi-gang Xing, Feng Du   +9 more
doaj   +1 more source

Study on crack propagation mechanism and charge structure optimization of tunnel shaped charge hydraulic blasting

Case Studies in Construction Materials
Explosive blasting in tunnel construction may provoke damage to the surrounding rocks, leading to economic and safety concerns. While studies on rock fragmentation mechanisms exist, the innovative mechanism of shaped charge hydrostatic blasting remains ...
Shixiang Xu, Bo Wu, Hualin Zhang, Shuangxing Qi, Jijing Wang, Hanbing Bian   +5 more
doaj   +1 more source

Study on the effect of stiffness parameter on response in dynamic modelling of the projectile

Scientific Reports
It is of great significance to understand and master the influence of stiffness parameters on the projectile configuration structure for the design and evaluation of configuration optimisation.
Jun Liang, Xuanhua Fan, Shifu Xiao, Feng Ma, Deming Huang   +4 more
doaj   +1 more source

Study on Effect of Tandem Charges with Different Charge Mass Ratios on Underwater Explosion Power

水下无人系统学报
In order to explore the influence of different charge mass ratios of tandem charges on the underwater explosion power, theoretical analysis of the impulse of the underwater explosion shock wave induced by tandem charges was carried out according to the ...
Wei ZHANG, Rui GUO, Hao CUI
doaj   +1 more source

Design method of blasthole charge structure based on lithology distribution. [PDF]

Sci Rep, 2021
Chen Y, Chen J, Wang P, Zhou M, Yang H, Li J.   +5 more
europepmc   +1 more source