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Search Results: 1 - 10 of 130330 matches for " V. Shafiepour "
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The educational needs at time of hospital discharge of patients who haveundergone coronary artery bypass graft (CABG)
V. Shafiepour,A. Najaf Yarandi
Journal of Mazandaran University of Medical Sciences , 2006,
Abstract: Background and purpose: Patients education should be done according to assessment and determination of their educational needs and their gender. The purpose of this study was to determine and compare educational needs from the view point of men and women with coronary artery bypass at discharge time.Materials and Methods: This was a descriptive-comparative study. Questionnaire was used to determine the educational needs of 100 men and 100 women who had undergone CABG for the first time in six domains (activity, medication, diet, treatment & complication, enhancing quality of life and skin care) and then compared the results.Results: The findings showed that the immediate educational needs of patients were information about their activity while the least important mens need was information about improving quality of life and for women it was information about diet. Findings showed that there was a significant difference between mens and womens educational needs except medication (P<0.0001).Conclusion: Accordings to the results of this research there was a significant difference between mens and womens educational needs, therefore attention should be paid to the specific educational requirements of different genders. So it is highly recommended that the educational needs of men and women are determined and adequate and proper education should be given to them at the time of discharge.
The Prevalence of diabetic retinopathy andrisk factors among diabetic patients attending to Imam Khomeini hospital in Sari
L. Shafiepour,A. Ahmadzadeh,V. Shafiepour,A.R. Khalilian
Journal of Mazandaran University of Medical Sciences , 2006,
Abstract: Background and purpose: Diabetes is a common disease with opthialmic complications which leads to partial vision loss and blindness. Diabetic retinopathy is one of the main causes of blindness in the world and the most common new blindness among 20-74 years-old patients in Westem countries. Diagnosis of ophthalmic complications in diabetic patients is an important priority of the health system and the purpose of this study was to determine the prevalence of retinopathy and risk factors in diabetic patients attending to Imam Khomeini hospital in Sari.Materials and Methods: Five hundred and forty diabetic patients attending to diabetics center of Imam Khomeini hospital enrolled for this study. Medical history was taken and the patients undergone physical exam with blood pressure control, height and weight and BMI, Laboratory tests (HbA1C) including serum urea and keratinin and proteinuria and serum lipid. Standard ophthalmic exams including: visual acuity, intra ocular pressure, slit lamp exam, dilated pupils were examed by ophthalmologist and ETDRS grading was done. Data were analyzed using t-test, x2 , Mann Withney test and regression analysis. P value of < 0.05 was considered for significancy.Results: Five hundred and forty diabetic patients including 150 men and 390 women were studied. One hundred and eighty five patients 5 with type one diabetes and 180 with type two diabetes had diabetic retinopathy.Conclusion: The prevalence of diabetic retinopathy was 34.3%. There were significant differences in range of risk factors such as BMI, duration of diabetes, diabetic control, blood sugar control, level of HbA1C, serum urea and keratinin, proteinuria, blood pressure, level of serum lipid
AIR QUALITY DETERIORATION IN TEHRAN DUE TO MOTORCYCLES
M. Shafiepour and H. Kamalan
Iranian Journal of Environmental Health Science & Engineering , 2005,
Abstract: Since there is a rise of motorcycles population as well as other motor vehicles, it seems that air Pollution deterioration should be studied as one of its environmental impacts. The main objective of this study was to develop a number of scenarios in order to determine the amount of Tehran's air pollution attributable to motorcycles and select the best and the most probable case to be recommended for implementation. The first step was to collect data such as the number of active motorcycles, daily traffic volume, average traveling speed and actual emission factors. For this purpose, a detailed questionnaire was designed to be completed by field surveys and measurements. The collected data were compared with traffic volume data, manufacturing statistics and the latest production capacity forecast in this field. Finally, with this data and emission factors for each type of motorcycle, an emissions inventory model was chosen to provide annual emissions from motorcycles in Tehran in different scenarios. The results showed that in 2002, there has been about 450'000 active motorcycles (4-stroke 58%, 2-stroke 28%, and moped 14%) with average speed of 40 km/h and average mileage of 110 km/d. Five scenarios were developed. The best scenario was "Changing all motorcycles to 4-strokes under EU-97 standard" which would result in reduction of NMVOC by 75%, CO by 35% and PM10 by 88%.
Comparison of Numerical Simulation of NOx with Modeling of IAQX in Indoor Environments
Shafiepour Motlagh M.,Kalhor M.,Khalil Arya F.
Iranian Journal of Health and Environment , 2011,
Abstract: Background and Objectives: This study presents an evaluation between IAQX 1.0f and Fluent 6.3.26 in modeling of NOx dispersion in an indoor residential environment. Modeling predictions are compared with sampling results.Materials and Methods: Aresidential building with about 84 m2 area is modeled. In IAQX 1.0f the building is divided into five zones. Emission factors and absorption rate of sinks is estimated with US.EPA suggested factors. On the other hand, In the Fluent 6.3.26 model, the building was divided into 1777 cells, and the openings are defined by the boundary conditions of the inflow. In this model, pollution sources were simulated by boundary conditions of the mass inflow.Results:Compared to IAQX 1.0f, Fluent 6.3.26 showed higher estimation of the concentrations in the zones of 1, 2 and 3. In comparison with the measurements, both models had underestimated results.Conclusion: The results of Fluent 6.3.26 were closer to the sampling results in the zones.
In Vitro Antiparasitic and Apoptotic Effects of Antimony Sulfide Nanoparticles on Leishmania infantum
Saied Soflaei,Abdolhossein Dalimi,Fatemeh Ghaffarifar,Mojtaba Shakibaie,Ahmad Reza Shahverdi,Mohsen Shafiepour
Journal of Parasitology Research , 2012, DOI: 10.1155/2012/756568
Abstract: Visceral leishmaniasis is one of the most important sever diseases in tropical and subtropical countries. In the present study the effects of antimony sulfide nanoparticles on Leishmania infantum in vitro were evaluated. Antimony sulfide NPs (Sb2S5) were synthesized by biological method from Serratia marcescens bacteria. Then the cytotoxicity effects of different concentrations (5, 10, 25, 50, and 100?μg/mL) of this nanoparticle were assessed on promastigote and amastigote stages of L. infantum. MTT method was used for verification results of promastigote assay. Finally, the percentages of apoptotic, necrotic, and viable cells were determined by flow cytometry. The results indicated the positive effectiveness of antimony sulfide NPs on proliferation of promastigote form. The IC50 (50% inhibitory concentration) of antimony sulfide NPs on promastigotes was calculated 50?μg/mL. The cytotoxicity effect was dose-dependent means by increasing the concentration of antimony sulfide NPs, the cytotoxicity curve was raised and the viability curve of the parasite dropped simultaneously. Moreover, the IC50 of antimony sulfide NPs on amastigote stage was calculated 25?μg/mL. On the other hand, however, antimony sulfide NPs have a low cytotoxicity effect on uninfected macrophages but it can induce apoptosis in promastigote stage at 3 of 4 concentrations. 1. Introduction Leishmaniasis is considered as one of the most important tropical diseases with worldwide distribution [1]. The disease is reported in 88 countries around the world, and its prevalence is estimated to be approximately 12 million annually and about 350 million people are at the risk of the disease [1, 2]. About 90% of cases of cutaneous leishmaniasis are found in Brazil, Afghanistan, Iran, Peru, Saudi Arabia, and Syria, and about 90% cases of visceral leishmaniasis are reported in Bangladesh, Brazil, Nepal, India, and Sudan [3, 4]. Visceral leishmaniasis (Kala-azar) is characterized by the presence of fever, splenomegaly, hepatomegaly, swollen lymph nodes, and weight loss that depends on the pathogenicity of Leishmania species and the host immune response against parasite [5, 6]. About 90% of the cases of this disease may lead to death if it is left without any treatment. Leishmaniasis coinfection with HIV and other immunosuppression is becoming another serious problem, therefore the treatment methods mostly focus on induction of immune responses [5]. Pentavalent antimonials are a group of compounds used for the treatment of leishmaniasis. The compounds currently available for clinical use are sodium
Nonsmooth Optimization Algorithms in Some Problems of Fracture Dynamics  [PDF]
V. V. Zozulya
Intelligent Information Management (IIM) , 2010, DOI: 10.4236/iim.2010.211073
Abstract: Mathematical statement of elastodynamic contact problem for cracked body with considering unilateral restrictions and friction of the crack faces is done in classical and weak forms. Different variational formulations of unilateral contact problems with friction based on boundary variational principle are considered. Nonsmooth optimization algorithms of Udzawa’s type for solution of unilateral contact problem with friction have been developed. Convergence of the proposed algorithms has been studied numerically.
Precessing Ball Solitons as Self-Organizing Systems during a Phase Transition in a Ferromagnet  [PDF]
V. V. Nietz
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.410A3010
Abstract:

Precessing ball solitons (PBS) in a ferromagnet during the first order phase transition is induced by a magnetic field directed along the axis of anisotropy, while the action of the periodic field perpendicular to the main magnetic field has been analyzed. Under these conditions, the characteristics of arising equilibrium PBS are uniquely determined by the frequency of the periodic field, but the solitons with other frequencies are impossible. For such structure, the entropy increase connected with dissipation is compensated by the decrease of the entropy due to the external periodic field. It is shown that the equilibrium PBS are essentially the “self-organizing systems” that can arise spotaneously in a metastable state of ferromagnet.

Movement of Self-Organizing Solitons in Ferromagnet  [PDF]
V. V. Nietz
Applied Mathematics (AM) , 2015, DOI: 10.4236/am.2015.610155
Abstract: Precessing ball solitons (PBS) in a ferromagnet during the first order phase transition induced by a magnetic field directed along the axis of anisotropy, while the additional action of high-frequency field perpendicular to the main magnetic field, are analyzed. It is shown that the spatial motion of solitons, associated with thermal fluctuations in the crystal, does not destroy the equilibrium of self-organized PBS.
Lα Line of Dark Positronium as a Nongravitational Detection of DM  [PDF]
V. Burdyuzha, V. Charugin
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.613187
Abstract: An attempt to predict the new atomic dark matter lines is done on the example of a dark lepton atom-positronium. Its Layman-alpha line with the energy near 3 GeV may be observable if the appropriate conditions are realized. For this we have studied a γ-ray excess in the center of our galaxy. In principle, this excess may be produced by the Lα line of a dark positronium in the medium with Compton scattering. The possibility of observations of an annihilation line (E~300 TeV) of dark positronium is also predicted. Other proposals to observe the atomic dark matter are shortly described. Besides, Hα line (1.3μ) of usual positronum must be observable in the direction on the center of our galaxy.
Randomization of Energy and Momentum in Statistical Mechanics  [PDF]
V. V. Paranjape
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.615223
Abstract: Particle-particle collisions in materials give rise to a particle distribution in energy and momentum in such a way that a most probable distribution is realized. I will show that an evaporating liquid generates a molecular imbalance in the equilibrium energy distribution. The molecular collisions by their inherent nature are able to repair the imbalance and in so doing it is shown that the liquids cool down. Similarly an external electric field creates substantial imbalance in the momentum distribution for the electrons in ionic semiconductors. Electron-electron collisions are able to restore the imbalance and as a consequence, similar to the evaporating liquid, the electron gas loses thermal energy and cools down.
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