BACKGROUND Intracranial pressure changes during head impact cause brain injuries such as vasogenic edema and cerebral contusion. However, the influence of impulsive pressure on endothelial function has not yet been fully studied in vitro. In this study, we developed a pressure loading device that produced positive and negative pressures by modifying an in vitro fluid percussion model and examin...

This paper presents a novel experimental methodology for the study of dynamic deformation of structures under underwater impulsive loading. The experimental setup simulates fluid–structure interactions (FSI) encountered in various applications of interest. To generate impulsive loading similar to blast, a specially designed flyer plate impact experiment was designed and implemented. The design ...

This paper documents results to date from the Rotorcraft Acoustic Characterization and Mitigation activity under the NASA Subsonic Rotary Wing Project. The primary goal of this activity is to develop a NASA rotorcraft impulsive noise prediction capability which uses first principles fluid dynamics and structural dynamics. During this effort, elastic blade motion and co-processing capabilities h...

The destruction process of the rock by tool impact device occurs with an impulsive load on from recoil reaction side rock, not only in axial, but also transverse direction. A model part is considered, which takes into account and longitudinal oscillations. has form a rod for loading beam constant cross section loading. Transverse oscillations sections are considered independent. When calculatin...

The prediction and prevention of traumatic brain injury, spinal injury and musculo-skeletal injury is a very important aspect of preventive medical science. Recently, in a series of papers [1, 2, 3], I have proposed a new coupled loading-rate hypothesis as a unique cause of all above injuries. This new hypothesis states that the main cause of all mechanical injuries is a Euclidean Jolt, which i...

Suicidal behavior is transmitted within families, above and beyond the transmission of psychiatric disorder. The familial phenotype of suicidal behavior includes suicide completion and attempts, but not suicidal ideation, the latter of which is transmitted along with depression. The familial transmission of early-onset suicidal behavior is co-transmitted with, and appears to be mediated by the ...