A novel impulsive cell pressurization experiment has been developed using a Kolsky bar device to investigate blast-induced traumatic brain injury (TBI). We demonstrate in this video article how blast TBI-relevant impulsive pressurization is applied to the neuronal cells in vitro. This is achieved by using well-controlled pressure pulse created by a specialized Kolsky bar device, with complete p...

The aim of this study was to investigate the effects of different pressurization rates during pressure support ventilation on breathing pattern, work of breathing, gas exchange and patient comfort in patients with acute lung injury. The pressurization rate modifies the initial pressure ramp by changing the initial peak flow rate: the increase in pressurization rate is associated with a decrease...

BACKGROUND Acetabular cementation during total hip arthroplasty is considered difficult mainly due to the appearance and anatomy of the acetabulum. Improved cementation technique has been shown to improve the longevity of acetabular components. METHOD We designed a ceramic model to investigate the effect of varying the initial cement pressurization and cup introduction times on the depth of c...

BACKGROUND Gun pressurization in total knee arthroplasty (TKA) may result in better cement penetration than hand packing, leading to fewer tibial plate failures. We compared cement intrusion characteristics between vacuum mixing and gun pressurization versus hand mixing and packing in the proximal tibia among patients undergoing TKA. METHODS We analyzed 6-week radiographs from 77 consecutive ...

The active-pressurization of cryogenic propellant tanks for the launcher application was analyzed in this study. Therefore, ground experiments, numerical simulations and analytical studies were performed with the following important results: In order to minimize the required pressurant gas mass, a higher pressurant gas temperature is advantageous or the application of helium as pressurant gas. ...

High pressure processing is recently applied in the food industry to inactivate spoilage and pathogenic microorganisms. Bacterial cells exhibit various barosensibility, and the role of pressurization, depressurization and constant pressure stage remain unknown. We investigated the effect of high pressure processing on Salmonella typhimurium and Listeria monocytogenes cells at 400 and 500 MPa re...

Radon mitigation by natural basement ventilation was compared to mitigation by forced ventilation (pressurization) and to mitigation by the operation of a modified heating and air conditioning (HAC) system in a series of experiments conducted during the spring and summer in a research house. Both natural ventilation and basement pressurization reduced average basement radon concentrations from ...

A gas pressure of 68 atm, elicited by helium-oxygen gas mixtures, reduced the susceptibility to penicillin of Staphylococcus aureus but not of Streptococcus pyogenes. The elevated pressure also caused a reduction in the binding of (14)C-penicillin to S. aureus, but not to S. pyogenes. When these studies were extended to glycine incorporation, it was shown that, even without penicillin, pressuri...

INTRODUCTION Articular cartilage transmits the stresses (5-12 MPa) that occur in joints with loading [1]. In vivo, a number of mechano-electrochemical signals arise with deformation of cartilage [2]. One of these signals, hydrostatic pressurization, occurs as a result of the high water content of the tissue and the small pore size. With deformation, fluid is constrained from rapidly leaving the...