introduction: the effect of severe soft tissue injury on the severity of hemorrhagic shock is still unknown. therefore, the present study was aimed to determine hemodynamic and metabolic changes in traumatic/hemorrhagic shock in an animal model. methods: forty male rats were randomly divided into 4 equal groups including sham, hemorrhagic shock, soft tissue injury, and hemorrhagic shock + soft ...

Abstract Wire-explosion impact forming (WEIF) is a process based on coupled effect of gaseous, liquid, and solid media, the experimental work alone not sufficient to properly show this complex process. To understand plastic deformation behavior workpiece under action shockwave load, WEIF AA5052 tubes were simulated in LS-DYNA by considering fluid/structure interactions. Then, stress, displaceme...

In this paper, a space-driven two-stage spur gear system is taken as the research object, and 10 DOF dynamic model established. Considering high load characteristics of space drive time-varying stiffness tooth clearance system, nonlinear response analysis was performed. The vibration acceleration, shock transmission error are studied in paper. This paper analyzes relationship between backlash r...

myocardial performance, utilizing the isolated canine heart preparation, was studied in two groups: normal control dogs and those subjected to hemorrhagic shock. a marked deterioration in myocardial functional capacity was observed in the shock group. from this study, myocardial incapacity resulting from the period of acute hypotension is felt to be a contributing factor in the death of animals...

abstract background: many people suffer from burn injuries every year, and burns make the patients undergo surgeries and years of rehabilitation. burns lead to more years of disability, compared to cancer or heart diseases. epidemiologic studies are needed to reveal the span, impact, and related factors of burns to help take appropriate efforts to reduce its mortality and morbidity. materials a...

trauma is the most common cause of mortality and morbidity in pediatric population. caring for the injured child requires special knowledge, precise management, and scrupulous attention to details. all clinicians who are responsible for the care of a pediatric trauma patient, including pediatricians, pediatric emergency room clinicians, and trauma surgeons, must be familiar with every tenet of ...

Hydrocode simulations were conducted to analyze the non-linear response of 1100-O aluminum plates with semi-circular notches. Plates with constant notch depth and notch root radius were loaded (normal to the notch-tip plane) to the same shock stress while the notch spacing was varied. The resulting stress distributions were analyzed at specific locations between adjacent notches and then the ma...

This paper presents the results of a study of using a neural network black box model of a shock absorber of an ATV (All Terrain Vehicle, four wheel drive, off road, single person vehicle) for accurate load modeling. This study is part of a larger investigation into the dynamic behavior and associated fatigue of an ATV vehicle, which is conducted under the auspices of the Fatigue Design and Eval...