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Search Results: 1 - 10 of 144428 matches for " F. Pourfallah "
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Evaluation of Serum Levels of Essential Trace Elements in Patients with Pulmonary Tuberculosis Before and After Treatment by Age and Gender
F. Pourfallah,S. Javadian,Z. Zamani,R. Saghiri
Pakistan Journal of Biological Sciences , 2011,
Abstract: The purpose of this study was to evaluate the levels of Zinc, Copper, Iron and Copper/Zinc ratio in the serum of adult patients with pulmonary tuberculosis in Iran. Serum levels of Zinc and Copper were determined by flame atomic absorption spectrophotometer and serum iron concentration was measured by using an Auto Analyzer. The study group consisted of 50 pulmonary tuberculosis patients before treatment and after 6 months of anti-tubercular therapy. Levels of serum Zn (p<0.001) and Fe (p<0.001) in TB patients were significantly increased after 6 months of anti-tubercular therapy. However, serum Cu concentration (p<0.01) and Cu/Zn ratio (p<0.05) were decreased after 6 months of anti-tubercular therapy. Some studies indicated a strong association of Zn, Cu, Fe and the Cu/Zn ratio with TB. In this study, we found remarkable change in Cu/Zn ratio. Some researchers mentioned that serum Cu/Zn ratio could be used as an important laboratory marker for diagnosis and treatment of tuberculosis. They also mentioned that trace element levels must be closely monitored during the process of disease.
Evaluation of Serum Levels of Zinc, Copper, Iron, and Zinc/Copper Ratio in Cutaneous Leishmaniasis
F Pourfallah,S Javadian,Z Zamani,R Saghiri
Iranian Journal of Arthropod-Borne Diseases , 2009,
Abstract: "nBackground: The purpose of this study was to evaluate the levels of zinc (Zn), copper (Cu), iron (Fe) and zinc/ cop-per ratio in the serum of patients with cutaneous leishmaniasis in Qom Province, center of Iran."nMethods: Serum levels of zinc and copper were determined by flame atomic absorption spectrophotometer and serum iron concentration was measured by using an Auto Analyzer. The study group consisted of 60 patients with cutaneous leishmaniasis and the control group of 100 healthy volunteers from the same area who were not exposed to cutane-ous leishmaniasis."nResult: There were no statistically significant differences in age and body mass index between the two groups. Se-rum Zn (P< 0.001) and Fe (P< 0.05) levels were lower in patients with cutaneous leishmaniasis than the control group. We also found serum Cu concentration (P< 0.05) in the patient group was significantly higher than that of the control group. However, zinc/ copper ratio (P< 0.001) was lower in patients with cutaneous leishmaniasis than in the control group."nConclusion: Our data indicated that Zn/Cu ratio was significantly lower in patients with CL as compared to the con-trols. Earlier reports suggest that, this ratio imbalance could be a useful marker for immune dysfunction in leishma-niasis. There was also strong association of Zn, Cu and Fe with CL. It suggests the use of blood zinc, copper, iron concentration and the copper/zinc ratio (Zn/Cu), as a means for estimating the prognosis of CL. Keywords: Cutaneous leishmaniasis, Zn, Cu, Fe. Zn/Cu ratio, Iran
Optimal coordination of Overcurrent and Distance Relays by a New Particle Swarm Optimization Method
A.Akbar Motie Birjandi,Mohsen Pourfallah
International Journal of Engineering and Advanced Technology , 2011,
Abstract: Nowadays, overcurrent relays play more important impression role on protection of power systems and the existence of distance relay accost of overcurrent relay causes protection increment and also complicating coordination between these relays. In recent years, intelligent optimal methods are being used more in comparison of mathematic optimal methods because of advantages -such as solving non linear problems; up speed; avoid using complicated mathematic problems, etc. For coordination of relays, at first, with detection of critical points, short circuit is done in those locations, then problem constraints are generated and the problem is solved by new method. In this paper, new method - named LP-PSO- has been suggested. This model is a combination of Linear Programming and Particle Swarm Optimization. The aim of LP (Linear Programming) is to decrease object function in any way that there are some constraints. Executed studies and comparison of results with other optimal method –Genetic algorithm -presents that coordination of relays has been done favorable.
Efficacy of Eosin B as a New Antimalarial Drug in a Murine Model
Zahra Zamani,Alireza Sadeghi Tafreshi,Hossein Nahrevanian,Behzad Lame-Rad,Fatemeh Pourfallah,Hossein Eslamifar,Sedigheh Sadeghi,Farideh Vahabi,Ayda Iravani,Mohammad Arjmand
Malaria Research and Treatment , 2012, DOI: 10.1155/2012/381724
Abstract: The initial success of any adopted anti-infective strategy to malaria is followed by a descent due to the emergence of resistance to it. The search for new drugs and drug targets is a consistent demand in this disease. Eosin B, a common laboratory dye, is reported to have good antiparasitic properties in vitro. It was studied for its antiparasitic effect in vivo on chloroquine-sensitive Plasmodium berghei murine malaria. Eosin B was administered in 2 different doses by either the oral or parenteral route, once or twice daily to mice infected with Plasmodium berghei. Both the doses of eosin B 400?mg/kg and 800?mg/kg gave better results than the controls which were 40?mg/kg chloroquine and 100?mg/kg of arteether with significance. Percentage suppressive activity by Peter’s test of eosin B was better, though at a higher dose than both the controls. Survival rate of mice receiving the higher dose of eosin B was longer than that of the controls. When administered twice daily, the mice were fully cured after 4 days. Eosin B seems to be a promising drug exhibiting good antimalarial effects in the murine model of the disease. 1. Introduction Malaria is the major cause of morbidity and mortality in tropical countries. In 2010, WHO reported 216 million cases of malaria with an estimated 655,000 deaths, 86% of the victims were children under 5 years of age, and 91% of the deaths occurred in Africa. It should; however, be noted that the number of disease cases has decreased for the first time in years and malaria mortality rates have fallen by more than 25% since 2000 [1]. Different reasons can be evinced for the reemergence of malaria, it could be due to spread of resistance to the first-line antimalarial drugs; cross-resistance between members of the limited number of drug families available; in some areas, multidrug resistance. The search for new drugs is imperative as discovery of new treatments and appearance of resistance to it takes a certain period of time. In the past decade, Chinese researchers have discovered artemisinin (qinghaosu), the active component of Artemisia annua, a herbal remedy used in Chinese folk medicine for 2000 years. This molecule with its oil-soluble (e.g., artemether and arteether), water-soluble (e.g., artesunate), and semisynthetic derivatives has shown excellent anti-Plasmodium efficacy in vitro. They are being used in combination with traditional antimalarials drugs such as mefloquine [2], but there is a ban on artemisinin monotherapy due to recent reports of resistance to artemisinin in Plasmodium falciparum on the Cambodian
Evaluating the Relationship between the Banking System Stability and the Internal Capital Adequacy Assessment Process: Evidence from the Egyptian Banking Sector  [PDF]
Karim F. F. Mohamed
Journal of Financial Risk Management (JFRM) , 2018, DOI: 10.4236/jfrm.2018.74020
Abstract: In the repercussions of the latest financial crisis that have occurred on the years 2008-2009, to fortify the stability of the banking systems, policy makers, and the Basel Committee on Banking Supervision—BCBS, together with national regulators have built up a few safety measures, and structures to guarantee that banks establishments keep up adequate capital levels through using risk management tools, in specific the Internal Capital Adequacy Assessment Processes (ICAAP). They all have called for thorough evaluations and assessments for the structure and components of risk management frameworks, tools, and practices whether by banks, regulators, analysts and risk management experts consistently, to ascertain the adequacy of the banking systems, policies, arrangements and techniques for overseeing risks, and guaranteeing the sufficiency of holding appropriate capital levels for confronting normal, as well as adverse and unexpected situations or emergencies. The main objectives of this research study are to shed the light on the ICAAP as one of the main keys of risk management programs, a process by which banks can use to ensure that they operate with an appropriate level of capital, forward looking processes for capital planning covering a broad range of risks across banks, activities beyond simple capital management, and bring together risk and capital management activities in a form that can be used to support business decisions. The research study shall evaluate the significant relationship between the Banking System Stability (dependent variable) and the Internal Capital Adequacy Assessment Process (ICAAP—independent variable) with evidence from the Egyptian Banking Sector.
Creation and Analysis of Earth’s Surface Roughness Maps from Airborne LiDAR Measurements in Downtown Urban Landscape  [PDF]
Fahmy F. F. Asal
Journal of Geographic Information System (JGIS) , 2019, DOI: 10.4236/jgis.2019.112015
Abstract: The Earth’s surface roughness constitutes an important parameter in terrain analysis for studying different environmental and engineering problems. Authors gave different definitions and measures for the earth’s surface roughness that usually depend on exploitation of digital elevation data for its reliable determination. This research aimed at exploring the different approaches for defining and extraction of the Earth’s surface roughness from Airborne LiDAR Measurements. It also aimed at evaluating the effects of the window size of the standard deviation filter on the created roughness maps in downtown landscapes using three known approaches namely; standard deviation filtering of the Digital Elevation Model (DEM), standard deviation filtering of the slope gradient model and standard deviation filtering of the profile curvature model. In this context, different roughness maps have been created from Airborne LiDAR measurements of the City of Toronto, Canada using the three filtering approaches with varying window sizes. Visual analysis has shown color tones of small roughness values with smooth textures dominate the roughness maps from small window sizes of the standard deviation filter, however, increasing the window sizes has produced wider variations of the color tones and rougher texture roughness maps. The standard deviations and ranges of the roughness maps from LiDAR DEM have increased due to increasing the filter window size while the skewness and kurtosis have decreased due to increasing the window size, indicating that the roughness maps from larger window sizes are statistically more symmetrical and more consistent. Thus, kurtosis has decreased by 53% and 82% due to increasing the window size to 7 × 7 and 15 × 15 respectively. The standard deviations of the roughness maps from the slope gradient model have increased due to increasing the window size till 15 × 15 while they have decreased with more increases. However, skewness has decreased due to increasing the window size till 15 × 15 and the kurtosis has decreased with higher rate till window size of 11 × 11. In the roughness maps from the profile curvature model, the ranges and skewness have decreased by 93.6% and 82.6% respectively due to increasing the window size to 15 × 15 while, kurtosis has decreased by 58.6%, 76.3% and 93.76% due to increases in the filter window size to 5 × 5, 7 × 7 and 15 × 15 respectively.
Kroniek
- F.
Nieuwe West-Indische Gids , 1949,
Abstract:
Kroniek
- F.
Nieuwe West-Indische Gids , 1949,
Abstract:
Kroniek
F.
Nieuwe West-Indische Gids , 1947,
Abstract:
Kroniek
- F.
Nieuwe West-Indische Gids , 1949,
Abstract:
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