OPTIMIZATION OF THE MATCHING RELATIONSHIP BETWEEN THE STEMMING LENGTH AND MINIMUM BURDEN IN CUT BLASTING OF LARGE-DIAMETER LONG-HOLE STOPES

Optimization of the matching relationship between the stemming length and minimum burden in cut blasting of large-diameter long-hole stopes

Abstract Cut blasting, in which new surfaces and relief space for subsequent blasting Home are created, is one of the most critical steps in the establishment of large-diameter long-hole (LDL) stopes.To reduce the damage to the chamber roof caused by stemming recoil and improve the rock breaking effect, 15 groups of small-scale model tests with min

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Risk Assessment of Water Pollution in Mountainous Industrial Parks

Water system security is the basic condition and important factor to promote the stable development of mountain industrial parks.The purpose of this study is to scientifically evaluate the water pollution Universal Stove Knob risks that mountain industrial parks may face.To this end, in this paper a water pollution risk assessment index system was

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Detection of botulinum neurotoxin serotype B at sub mouse LD(50) levels by a sandwich immunoassay and its application to toxin detection in milk.

Botulinum neurotoxin (BoNT), the causative agent of botulism, a serious neuroparylatic disease, is produced by the anaerobic bacterium Clostridium botulinum and consists of a family of seven serotypes (A-H).We previously reported production of high-affinity monoclonal antibodies to BoNT serotype A.Recombinant peptide fragments of the light chain, t

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