2篇
您的检索式：作者名="Justin Hardi"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 早期流产的最佳处理方法是什么?显示文摘早期流产是指妊娠≤13周时发生的流产,是一种除了造成出血和疼痛等生理效应外,还可能对女性产生毁灭性心理影响的重大生活事件。在月经推迟、妊娠测试呈阳性的女性中,有四分之一最终会发生早期流产。在英国,每年约有12.5万例早期流产,其中有5万例需住院治疗。 | Justin Chu Adam J Devall Pollyanna Hardy Leanne Beeson Arri Coomarasamy 徐婷婷(译) 刘兴会(审校) | 2021 | 英国医学杂志中文版2021，24，7： | 0 |
| 2 | Dense core response to forced acoustic fields in oxygen-hydrogen rocket flames显示文摘Oscillatory combustion representative of thermo-acoustic instability in liquid rockets is simulated by experiment and LES calculation to investigate the flame behavior in detail.In particular,we focus on how the velocity and pressure fluctuations affect the behavior of the dense oxygen jet,or‘LOx core’.The test case investigated is a high pressure,multiinjector,oxygen-hydrogen combustor with a siren for acoustic excitation.First,the LES calculation is validated by the resonant frequencies and average flame topology.A precise frequency correction is conducted to compare experiment with LES.Then an unforced case,a pressure fluctuation case,and a velocity fluctuation case are investigated.LES can quantitatively reproduce the LOx core shortening and flattening that occurs under transverse velocity excitation as it is observed in the experiments.On the other hand,the core behavior under pressure excitation is almost equal to the unforced case,and little shortening of the core occurs.The LOx core flattening is explained by the pressure drop around an elliptical cylinder using the unsteady Bemoulli equation.Finally,it is shown that the shortening of the LOx core occurs because theflattening enhances combustion by mixing and increase of the flame surface area. | Youhi Morii Scott Beinke Justin Hardi Taro Shimizu Hideto Kawashima Michael Oschwald | 2020 | Propulsion and Power Research2020，9，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员