Results 31 to 40 of about 11,584,139 (161)

A Three-Dimensional DSMC Simulation of Single-Stage Turbomolecular Pump Adopting Accurate Intermolecular Collisions Models

Journal of Fluid Science and Technology, 2006
The single-stage TMP is investigated by the direct simulation Monte Carlo (DSMC) method with a three dimensional analysis in a rotating reference frame.
Sheng WANG, Hisashi NINOKATA
doaj   +1 more source

Modelling, Simulation and Dynamic Sliding Mode Control of a MEMS Gyroscope

Micromachines, 2021
An adaptive dynamic sliding mode control via a backstepping approach for a microelectro mechanical system (MEMS) vibratory z-axis gyroscope is presented in this paper. The time derivative of the control input of the dynamic sliding mode controller (DSMC)
Yunmei Fang, Wen Fu, Cuicui An, Zhuli Yuan, Juntao Fei   +4 more
doaj   +1 more source

Hybrid continuum–molecular modelling of multiscale internal gas flows [PDF]

, 2013
We develop and apply an efficient multiscale method for simulating a large class of low-speed internal rarefied gas flows. The method is an extension of the hybrid atomistic–continuum approach proposed by Borg et al.
Reese, Jason M., Patronis, Alexander, Borg, Matthew K., Lockerby, Duncan A.   +3 more
core   +1 more source

Multiscale simulation of interacting turbulent and rarefied gas flows in the DSMC framework

Theoretical and Applied Mechanics Letters
A multiscale stochastic-deterministic coupling method is proposed to investigate the complex interactions between turbulent and rarefied gas flows within a unified framework.
Liyan Luo, Songyan Tian, Lei Wu
doaj   +1 more source

Mate Whenua—Follow‐Up After Early Medical Abortion in New Zealand: A Randomised Controlled Trial

BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.
ABSTRACT Objective To evaluate self‐assessment with low sensitivity urine pregnancy test versus comparative serum bhCG in women having early medical abortion (EMA) for the outcomes of complete follow‐up and ongoing live pregnancy. Design Multi‐centre parallel group randomised controlled trial.
Michelle R. Wise, Alison Knowles, Sally Talbot, Varsha Parag, Bev Lawton, Misty Edmonds, Brittany Gibbons, Sophia Amjad, E. Jane MacDonald   +8 more
wiley   +1 more source

On time counting procedures in the DSMC method for rarefied gases [PDF]

, 1997
The DSMC (direct simulation Monte Carlo) method for rarefied gas dynamics is studied. The behaviour of the underlying stochastic particle system is determined by three main components - the time step between subsequent collisions, the random mechanism ...
Rjasanow, Sergej, Wagner, Wolfgang, Sergej Rjasanow, Wolfgang Wagner   +3 more
core   +1 more source

Sinusoidal Microchannel with Descending Curves for Varicose Veins Implantation

Micromachines, 2018
Approximately 26% of adult people, mostly females, are affected by varicose veins in old age. It is a common reason for distress, loss of efficiency, and worsening living conditions.
Muhammad Javaid Afzal, Muhammad Waseem Ashraf, Shahzadi Tayyaba, M. Khalid Hossain, Nitin Afzulpurkar   +4 more
doaj   +1 more source

Sex Steroids Measurement by Mass Spectrometry in Hypogonadal Men in a Real‐World Setting: Serum Estradiol (E2) and E2 to Total Testosterone Ratio Do Not Differ Between Patients With Klinefelter Syndrome and Non‐Klinefelter Syndrome Hypogonadism

Andrology, EarlyView.
ABSTRACT Background Traditionally, Klinefelter syndrome (KS) was considered a clinical condition associated with hyperestrogenism. Aim To compare circulating sex steroids, particularly estrogens, in a cohort of KS and non‐KS hypogonadal men. Materials and Methods A cohort of hypogonadal men, treated and untreated, was prospectively enrolled in a real ...
Daniele Renda Livraghi, Francesco Costantino, Filippo Vignali, Giulia Canu, Maria Cristina De Santis, Laura Roli, Tommaso Fasano, Vincenzo Rochira, Sara De Vincentis   +8 more
wiley   +1 more source

Ibrutinib versus allogeneic haematopoietic stem cell transplant in relapsed/refractory del(17p) chronic lymphocytic leukaemia/small lymphocytic lymphoma

British Journal of Haematology, EarlyView.
After adjusting for confounders, the ibrutinib cohort had significantly better overall survival (adjusted hazard ratio, 0.39; 95% confidence interval, 0.23–0.68; p = 0.0008) than the allogeneic haematopoietic stem cell transplantation (alloHSCT) cohort.
Farrukh T. Awan, Ran Liu, Hsin‐Hui Huang, Matthew Bye, Kwang Woo Ahn, Gabriel Krigsfeld, Anat Raz, Heather Wolfe, Mehdi Hamadani   +8 more
wiley   +1 more source

Bayesian estimation-based information exchange techniques for coupled Navier-Stokes equation and DSMC algorithms

Kongqi donglixue xuebao
In the calculation process of coupled Navier-Stokes (N-S) equation and direct simulation Monte Carlo (DSMC) algorithms, the DSMC method suffers from a limited number of statistical samples.
Zhonghua Li, Leining Dang, Junlin Wu, Zhihui Li   +3 more
doaj   +1 more source