Results 41 to 50 of about 6,149,134 (223)

Influence of filling ratio on gas explosion in flameproof chamber

open access: yesMeikuang Anquan, 2023
The maximum explosion pressure and maximum explosion pressure rate produced by different filling ratios in the flameproof chamber are different. In order to study the change characteristics of gas explosion under different filling ratios in flameproof chamber, the flameproof enclosure with a flameproof chamber size of 750 mm×750 mm×600 mm is used as ...
ZHANG Wenqiang   +2 more
openaire   +1 more source

Research on deep hole segmented charge cut blasting of rock roadway based on numerical simulation

open access: yesMeitan kexue jishu, 2023
With the increase of the depth of the blast hole, the rock clamping effect at the bottom of the blast hole is enhanced, resulting in low rock breaking efficiency and blast hole utilization.
Chengxiao LI   +5 more
doaj   +1 more source

Nano-bulk aluminum fabrication from nano powder mixed with micro powder by explosive consolidation

open access: yesMaterials & Design, 2022
Explosive Consolidation Method has unique advantages with well prospects in the preparation and processing of bulk materials. In this paper, self-designed structure was employed to study the influence of the mass ratio of nano aluminum powder to aluminum
Zi Wang   +4 more
doaj   +1 more source

Propagation rules of shock waves in confined space under different initial pressure environments

open access: yesScientific Reports, 2022
In this paper, an initial pressure adjustable explosion vessel was developed, and the effect of negative pressure, positive pressure (0.2–1.8 atm) different initial ambient pressure on the explosive shock wave generated by the explosion of explosives was
F. Q. Wang   +7 more
doaj   +1 more source

Copolymers of 4-Trimethylsilyl Diphenyl Acetylene and 1-Trimethylsilyl-1-Propyne: Polymer Synthesis and Luminescent Property Adjustment

open access: yesMolecules, 2022
Poly(4-trimethylsilyl diphenyl acetylene) (PTMSDPA) has strong fluorescence emission, but its application is limited by the effect of aggregation-caused quenching (ACQ).
Tanxiao Shen   +4 more
doaj   +1 more source

Intensification of technological processes in drilling and blasting operations during open-cut mining in Kyzylkum region [PDF]

open access: yes, 2018
Purpose. It is found that for long term standing, the pit bench profile is close to the boundary of the disturbed zone. Therefore, long stability of the bench can be estimated in respect to the size of the disturbed area and the boundary of residual ...
Karimov, Sh, Ravshanova, M, Zairov, Sh
core   +1 more source

Effect of Equivalent Ratio and Hydrocarbon Ratio on Explosive Characteristics of Synthetic Gas

open access: yesAdvances in Computer and Engineering Technology Research
With the development of society, the importance of energy is increasing day by day, and more and more people realize the importance of energy for social development.Therefore, people began to explore energy utilization, energy exploitation, clean energy and other fields.Therefore, in order to use coal resources cleanly and efficiently and reduce the ...
Lin Hu, Pinkun Guo
openaire   +1 more source

Theoretical Approach to Dust Explosion

open access: yesKONA Powder and Particle Journal, 2014
A number of experimental researches on dust explosion have been published with measured data of the explosive characteristics such as the ignition temperature, the flame propagation velocity, the upper and lower limit explosible concentrations and the ...
Tatsuo Tanaka
doaj   +1 more source

Considering explosive charge shape and embedded depth in the design of concrete shelter thickness

open access: yesDefence Technology, 2023
Cost and safety are important considerations when designing the thickness of a protective reinforced concrete shelter. The blast perforation limit (BPL) is the minimum concrete shelter thickness that resists perforation under blast loading.
Yi Fan   +5 more
doaj   +1 more source

The early phases of Milky Way's chemical evolution [PDF]

open access: yes, 2004
The earliest phases of the chemical evolution of our Galaxy are analysed in the light of the recent VLT results (concerning abundance patterns in the most metal-poor stars of the Galactic halo) and of stellar nucleosynthesis calculations.
Argast   +36 more
core   +2 more sources

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