The two most frequently heard terms in the mining industry are safety and production. These put a lot of pressure on blasting engineers crew to give more while consuming less. key achieving optimum results is sophisticated bench analysis, which must be combined with design blast parameters for good fragmentation safe ground vibration. Thus, unique solution forecasting both reduced vibration usi...

background many industrial devices have an excessive vibration which can affect human body systems. the effect of vibration on cochlear histology has been as a debatable problem in occupational health and medicine. objectives due to limitation present in human studies, the research was conducted to survey the influence of vibration on cochlear histology in an animal model. materials and methods...

The effect of a blasting vibration from an excavating tunnel on adjacent excavated is great importance for the stability and security twin tunnels. Due to relatively small distance between face concrete lining tunnel, impact could be significant should considered in practical project. In order control scales during excavation one minimize one, research based field-blasting tests performed tunne...

This paper presents a series of numerical simulations to investigate blast-induced crack propagation in rock specimens embedded with pre-existing fracture. The simulation is conducted using the particle-based discrete element method, which can effectively capture many important geomechanical processes such as solid vibration, growth and fracture sliding. Particles are assembled based on grain s...

Rice blast, caused by Magnaporthe grisea Cav., frequently limits rough rice yields and cultivar options in Arkansas rice production areas. Rice growers and researchers have long observed that susceptible rice plants are more blast resistant when growing in moisture saturated or flooded soil. In fact, Arkansas growers utilized flood-induced field resistance as their primary blast control measure...

Recent studies suggest that the pressure changes occur at the rates of 0.5 to 1.5 kHz. Therefore, studying brain tissue at blast-rate deformations requires a test method with loading duration of about 1 ms. Although the material properties of brain tissue have been studied since 1960’s, a limitation of the previous studies is that in most of them the strain rates were below 100 s -1 ; making th...

Traumatic brain injury sustained after blast exposure (blast-induced TBI) has recently been documented as a growing issue for military personnel. Incidence of injury to organs such as the lungs has decreased, though current epidemiology still causes a great public health burden. In addition, unprotected civilians sustain primary blast lung injury (PBLI) at alarming rates. Often, mild-to-moderat...

HYPOTHESIS Internal jugular vein (IJV) compression before blast injury will lead to reduced risk of traumatic hearing injury following exposure to a blast injury. BACKGROUND IJV compression and its effects on not only intracranial, but also intracochlear pressure may potentiate blast induced hearing injury, therefore, precluding its use as a prophylactic therapy for blast induced traumatic br...