Results 21 to 30 of about 953,820 (321)

Quantitative analysis of intermuscular septa in the leg: implications for trauma surgery

open access: yesTrauma Surgery & Acute Care Open, 2021
Background Compartment syndrome is the excess swelling within an inelastic compartment leading to excessive compartment pressure. Lower limb trauma has a high risk of compartment syndrome, which is typically mitigated using a two-incision fasciotomy. Our
Samuel Tisherman   +4 more
doaj   +1 more source

A General Shock Waveform and Characterisation Method [PDF]

open access: yes, 2019
A shock waveform is proposed based on the mechanical mechanism of shock generation in a structure. The parameters in the shock waveform have clear mechanical meanings about the generation and development of the shock. A shock signal processing method is proposed and applied to represent a pyroshock or ballistic shock signal in both temporal and ...
arxiv   +1 more source

Insights into the shockwave attenuation in miniature shock tubes [PDF]

open access: yes, 2020
Miniature shock tubes are finding growing importance in a variety of interdisciplinary applications. There is a lack of experimental data to validate the existing shock tube flow models that explain the shockwave attenuation in pressure-driven miniature shock tubes.
arxiv   +1 more source

Numerical investigation on unsteady force suppression of pump-jet rotor by oscillating stator trailing edge flaps

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectivesThe unsteady force of the rotor is the main excitation source of pump-jet shafting vibration, and rotor-stator interaction has an important impact on the characteristics of the unsteady force.
Wanghao TANG   +3 more
doaj   +1 more source

Characterization of cerebral blood flow during open cardiac massage in swine: Effect of volume status

open access: yesFrontiers in Physiology, 2022
Introduction: Patients in cardiac arrest treated with resuscitative thoracotomy and open cardiac massage (OCM) have high rates of mortality with poor neurological outcomes.
Neerav Patel   +8 more
doaj   +1 more source

Observational signatures of sub-photospheric radiation mediated shocks in the prompt phase of GRBs [PDF]

open access: yes, 2012
A shock that form below the photosphere of a GRB outflow is mediated by Compton scattering of radiation advected into the shock by the upstream fluid. The characteristic scale of such a shock, a few Thomson depths, is larger than any kinetic scale involved by several orders of magnitudes, hence, unlike collisionless shocks, radiation mediated shocks ...
arxiv   +1 more source

Viscosity, shock-induced separation, and shock reversal -- Oscillating wing section in transonic flow [PDF]

open access: yesarXiv, 2021
We numerically examine the mechanisms that describe the shock-boundary layer interactions in transonic flow past an oscillating wing section. At moderate and high angles of incidence but low amplitudes of oscillation, shock induced flow separation or shock-stall is observed accompanied by shock reversal.
arxiv  

Postoperative complications of endovascular blunt thoracic aortic injury repair

open access: yesTrauma Surgery & Acute Care Open, 2021
Background Thoracic endovascular aortic repair (TEVAR) has become the standard of care for thoracic aortic aneurysms and increasingly for blunt thoracic aortic injury (BTAI).
Thomas M Scalea   +6 more
doaj   +1 more source

Diffusive Shock Acceleration by Multiple Weak Shocks [PDF]

open access: yesarXiv, 2021
The intracluster medium (ICM) is expected to experience on average about three passages of weak shocks with low sonic Mach numbers, $M\lesssim 3$, during the formation of galaxy clusters. Both protons and electrons could be accelerated to become high energy cosmic rays (CRs) at such ICM shocks via diffusive shock acceleration (DSA).
arxiv  

Study on force spectrum characteristics of a pump-jet under inflow turbulence

open access: yesZhongguo Jianchuan Yanjiu, 2022
Objectives This paper aims to clarify the characteristics of the unsteady force spectrum of a pump-jet operating under inflow turbulence. MethodsThe turbulence grid and Fourier synthesis method are employed to produce inflow turbulence with spatial flow ...
Shuaikang SHI   +3 more
doaj   +1 more source

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