Published in Theriogenology
During insemination, a large number of spermatozoa are deposited in the female genital tract, but a very low percentage is able to colonize the site of fertilization. The influx of neutrophils into the uterine lumen and semen reflux (backflow) are known mechanisms that decrease the number of spermatozoa within the uterus. No report has attempted to...
Published in Stereotactic and Functional Neurosurgery
Background/Aims: The distribution of infusate into the brain by convection-enhanced delivery can be affected by backflow along the catheter shaft. This work assesses the following: (1) whether tissue coring and occlusion of the catheter lumen occurs when an open end-port catheter is inserted, (2) whether there is a relationship between intracathete...
Published in Paddy and Water Environment
The main problem facing farmers in the Nile Delta is water shortages at the ends of irrigation networks and canals. These problems have worsened as water demands have increased. Egypt’s Ministry of Water Resources and Irrigation is currently trying to avoid water deficits by returning agricultural drainage water to the irrigation canals. In the Kaf...
Published in Transport in Porous Media
This paper reports modeling of gas field production and CO2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {CO}_{2}$$\end{document} injection in a theoretical res...
Published in Annals of neurosciences
We detected higher ratios in the in vivo subjects than in ex vivo. This difference could be explained by the extra cellular space volume fraction. Studies evaluating backflow and morphology use in vivo tissue as a medium are recommended. Further investigation is warranted to evaluate the role blood pressure and heart rate may play in human CED clin...
Published in Annals of neurosciences
Our findings indicate that ramping CED infusion protocols can potentially minimize backflow and produce more spherical infusion clouds. However, further research is required to determine the strength of this correlation, especially in relation to maximum infusion rates.
Published in International Journal of Precision Engineering and Manufacturing
A mold was developed for injection-compression molding experiments. The cavity was designed to be closed to prevent melt leakage in the situation of partial mold opening for injection. In order to investigate the effects of melt backflow on cavity pressure during mold compression, one valve-gate hot runner system was built into the plate mold. From...
Committee Chair: Aidun, Cyrus; Committee Member: Chris Verrill; Committee Member: Jeff Hsieh; Committee Member: Mostafa Ghiaasiaan; Committee Member: Preet Singh; Committee Member: Yogendra Joshi
Published in Medical & Biological Engineering & Computing
Direct infusion by means of needles is one of the widely used methods for the delivery of nanoparticles in tumors for hyperthermia cancer treatments. During an infusion process, infusion-induced deformation can substantially affect the dispersion of the nanoparticles injected in a biological tissue. In this study, a poroelastic model is developed t...
Published in Meccanica
Closed-form solutions are derived for the steady magnetohydrodynamic (MHD) viscous flow in a parallel plate channel system with perfectly conducting walls in a rotating frame of reference, in the presence of Hall currents, heat transfer and a transverse uniform magnetic field. A mathematical analysis is described to evaluate the velocity, induced m...
