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664 results on '"Asghari M"'

4. CRP Levels during First Trimester of Pregnancy is Associated with Preterm Labor and Low Birth Weight

Author

Mohammadi B, Moghaddam Banaem L, and Asghari M

Subjects
CRP, Preterm Labor, LBW, Nursing, RT1-120
Abstract

Background & Objective: Preterm labor is a major risk factor of mortality and morbidity in newborns and fetuses. Low birth weight is also a risk factor for mortality and various neonatal diseases. This study aimed to determine the association between the CRP levels in first trimester of pregnancy with low birth weight and preterm labor. Methods & Materials: In this prospective cohort study, we measured serum CRP levels in 400 pregnant women up to 20 weeks of gestation. All participants were followed up to delivery. Preterm labor was defined as delivery before 37 weeks of gestation. Low birth weight was defined as weight less than 2500 g at birth. Statistical analysis was done using Chi-square, Logistic regression, and ROC curve. P-values less than 0.05 were considered to be significant. Results: After controlling for the effects of age above 35 years, mothers' occupations, history of preterm labor, socio-economic status, history of abortion, primiparity, and passive smoking, logistic regression analysis showed statistically significant relationship between the CRP and preterm labor (P-value=0.000, OR=1.24, %95 CI=1.11-1.38). However, there were no significant relationships between the CRP levels with other factors. Using Roc curve, we determined CRP cut-off point level for preterm labor. With 81% sensitivity, and 64% specificity, CRP cut-off point was 3.45 mg/l. After controlling for the effects of low socio-economic status, history of LBW, history of abortion, gravidity, primiparity, and passive smoking, logistic regression analysis showed statistically significant association between the CRP levels and LBW (OR=1.31, CI %95=1.08-1.59, P=0.005). However, there were no significant relationships between CRP levels with other factors. CRP cut-off point level for LBW was determined using Roc curve. With 87.5% sensitivity, and 74% specificity, CRP cut-off point was 4.75 mg/l. Conclusion: It seems that the inflammatory marker, CRP, can be used to identify women who are at high risk for preterm labor and LBW. However, larger studies are needed to establish this relationship definitively

Published
2010

13. Harmonic oscillator with minimal length, minimal momentum, and maximal momentum uncertainties in SUSYQM framework

Author

Asghari, M., Pedram, P., and Nozari, K.

Subjects
High Energy Physics - Theory, Quantum Physics
Abstract

We consider a Generalized Uncertainty Principle (GUP) framework which predicts a maximal uncertainty in momentum and minimal uncertainties both in position and momentum. We apply supersymmetric quantum mechanics method and the shape invariance condition to obtain the exact harmonic oscillator eigenvalues in this GUP context. We find the supersymmetric partner Hamiltonians and show that the harmonic oscillator belongs to a hierarchy of Hamiltonians with a shift in momentum representation and different masses and frequencies. We also study the effect of a uniform electric field on the harmonic oscillator energy spectrum in this setup., Comment: 14 pages, 1 figure, to appear in Physics Letters B

Published
2013
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15. The Radiative Corrections to the Mass of the Kink Using an Alternative Renormalization Program

Author

Gousheh, S. S., Mohammadi, A., Asghari, M., Moazzemi, R., and Charmchi, F.

Subjects
High Energy Physics - Theory
Abstract

In this paper we compute the radiative correction to the mass of the kink in $\phi^4$ theory in 1+1 dimensions, using an alternative renormalization program. In this newly proposed renormalization program the breaking of the translational invariance and the topological nature of the problem, due to the presence of the kink, is automatically taken into account. This will naturally lead to uniquely defined position dependent counterterms. We use the mode number cutoff in conjunction with the above program to compute the mass of the kink up to and including the next to the leading order quantum correction. We discuss the differences between the results of this procedure and the previously reported ones., Comment: 8 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:0806.0369

Published
2012
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27. Methylene diisocyanate - aided tailoring of nanotitania for dispersion engineering through polyurethane mixed matrix membranes: Experimental investigations

Author

Salahshoori, I, Asghari, M, Jorabchi, MN, Wohlrab, S, Rabiei, M, Raji, M, Afsari, M, Salahshoori, I, Asghari, M, Jorabchi, MN, Wohlrab, S, Rabiei, M, Raji, M, and Afsari, M

Abstract

The present focus of environmental science is centred on addressing the significant and controversial challenge of separating acid gases As a result scientists are actively engaged in developing high performance membranes that can effectively transport gases An important factor in achieving superior gas separation efficiency is the ability to control the rate of chemical component penetration through the membrane This has led to an increasing interest in mixed matrix membranes MMMs that contain inorganic nanoparticles homogeneously dispersed within the polymer matrix which are becoming a popular alternative to traditional polymeric membranes In this work the morphological properties of polyurethane PU membrane treated with titanium dioxide TiO2 which is functionalized with methylene diisocyanate MDI were studied and its gas transport properties like selectivity and permeability were evaluated FTIR XRD TG DTG and SEM analyses were performed for neat and MMMs to study their morphological properties in phase I of the research Our results showed that MDI modification improved the dispersion of TiO2 in the PU matrix resulting in a more uniform and compact membrane structure Moreover gas permeability results showed that incorporating up to 1 wt of unfunctionalized and functionalized TiO2 into the PU matrix enhanced the CO2 N2 selectivity by 71 69 and 78 42 respectively Overall this study demonstrated the potential of MDI aided tailoring of TiO2 for dispersion engineering in PU MMMs which can lead to improved gas separation performance The findings have implications for developing advanced materials for gas separation applications particularly in industrial processes such as natural gas purification and carbon capture

Published
2023

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