Volume 13, Issue 6 (9-2013)
Abstract
In the present paper, Molecular Dynamics Simulation (MDS) is performed for Poiseuille flow of liquid Argon in a nanochannel by embedding the fluid particles in an external force with different potential functions. Three types of Lennard-Jones (LJ) potentials are used as interatomistic or molecular models for evaluations of interactions and density, velocity profiles across the channel are investigated. The interatomic potentials are LJ 12-6 potential, LJ 9-6 potential and LJ-Smooth potential. Density and velocity profiles across the channel are investigated. Obtained results show that hydrodynamic characteristics and behavior of flow depends on the type of interaction potential. It is shown that the LJ 9-6 predictions for velocity and temperature are larger than those of LJ12-6 and LJ-Smooth potentials. Also, applying LJ 9-6 results in further calculations time. The results show the effect of interaction force model on the understanding and analyzing of nanoscale flows.
Mohammad Hadi Sarvari, Mohammad Reza Jani, Arabahmadi عرب احمدی, Asma Nikkhah-Bidokhti, Mohammad Reza Razmara, Ashraf Ghiasi, Aziz Mohammad Sabeti, Zahra Shafigh Namghi, Fatemeh Avizhgan,
Volume 23, Issue 5 (Winter 2021)
Abstract
Background & Aim: Fluid-electrolyte balance is a dynamic process that is necessary for the continuation of life and homeostasis. Disorders in the bodychr('39')s electrolyte balance and renal dysfunction are related factors in aggravation of symptoms, mortality and length of hospital stay and treatment costs, so we decided To conduct a study by examining the status of electrolyte disorders and its related factors in patients admitted to Shohada Ghaen Educational and Medical Center.
Methods: The present study is a descriptive-analytical study that was performed by census method on all patients admitted to Shohada Ghaen Hospital in 2017. The tools used in this research included a researcher-made checklist that had 11 items that were completed by the researcher. For data analysis, descriptive statistics such as mean, standard deviation and frequency tables and chi-square test and Kruskal-Wallis. Significance level was set at (P <0.05).
Results: 873 patients with a mean age of 22.92 ± 58.42 were studied. The results showed that there was a significant relationship between electrolyte disorders and the level of education, type of disease and disease ward (P <0.05).
Conclusion: Increasing knowledge and awareness has a great effect on the prevention of electrolyte disorders. Also, due to the relationship between electrolyte disorders and the type of disease, special attention should be paid to this issue.
