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OALib Journal期刊

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Comparison of performance evaluation of aluminium sulfate and ferric chloride for removal of Disperse Blue 56 from synthetic wastewater
Reza Shokoohi,Fateme Samiee,Salah Azizi
Pajouhan Scientific Journal , 2013,
Abstract: Introduction: Industries are textile wastewater contains large amounts of color can create a lot of pollution. There are different methods for decolorization of textile industries, for example the methods of coagulation, flocculation, chemical oxidation, biological treatment, electrochemical techniques, including ion exchange and other processes. The purpose of this study was to compare the efficacy of alum and ferric chloride is used to remove dye Disperse Blue 56.Material and Methods: The research was according to the method Jar test. The sample pH was adjusted using NaOH and sulfuric acid 0.1 normal. Coagulants with different concentrations were added to each sample. A minute of high speed and slow speed were mixed for 15 minutes and after deposition, sample pH and absorbance values were measured. The dye concentration in the samples was measured by spectrometry method using a UV-1700 Pharmaspec Shimadzo spectrophotometer at 550 nm wavelengh.Results: Coagulation by alum to remove dye Disperse Blue has a pH optimum of 6 and optimal dose of 130 milligrams per liter, which is the pH and the optimal dose has a removal efficiency of 93 percent, while for Chloroferric the pH optimum of 9 and optimal dose of 120 milligrams per liter with removal efficiency over 98 percent.Conclusion: The results showed that the coagulation process using a lot of blue disperses dyes in textile wastewater removed from the wastewater. The results showed that the coagulant is alum Chloroferric has better removal efficiency.
Bezier Control Points Method to Solve Scheduling of Injections of Immunotherapeutic Agents  [PDF]
Fateme Ghomanjani
Intelligent Control and Automation (ICA) , 2012, DOI: 10.4236/ica.2012.31003
Abstract: Cancer immunotherapy aims at enhancing immune system to defend against the tumor. However, it is associated with injecting small doses of tumor-bearing molecules or even using drugs. The problem is that how to schedule these injections effectively and/or how to apply drugs in a way to decrease toxic side effects of drugs such that the tumor growth to be stopped or at least to be limited. Here, the theory of optimal control has been applied to find the optimal schedule of injections of an immunotherapeutic agent against cancer. The numerical method employed works for any dynamic linear system and has almost precise solution. In this work, it was tested for a well known model of the tumor immune system interaction.
Variational Iterative Method Applied to Variational Problems with Moving Boundaries  [PDF]
Fateme Ghomanjani, Sara Ghaderi
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.35061
Abstract: In this paper, He’s variational iterative method has been applied to give exact solution of the Euler Lagrange equation which arises from the variational problems with moving boundaries and isoperimetric problems. In this method, general Lagrange multipliers are introduced to construct correction functional for the variational problems. The initial approximations can be freely chosen with possible unknown constant, which can be determined by imposing the boundary conditions. Illustrative examples have been presented to demonstrate the efficiency and applicability of the variational iterative method.
Investigation of Stress Induced Analgesia with or Without Cck Receptor Agonists and Antagonists in Mice Suffering from Neuropathic Pain Using Hot Plate Test
A Mesdaghinia,F Samiee
Journal of Shahid Sadoughi University of Medical Sciences , 2004,
Abstract: Introduction: Recent studies have shown that cold water swimming stress (CWSS) produces analgesia. Although exact mechanism of the analgesia is until unclear, it may attributed to CCK receptors. On the other hand, the effectiveness of analgesic drugs for treatment of neuropathic pain is limited. In the present study, the effects of CCK receptor agonist caerulein and antagonist proglumide , both alone and together on the CWSS- induced analgesia was investigated and compared in normal mice and those whose sciatic nerve was ligated. Material & Methods: In this research, fifty groups of nine male albino mice were used. As a model of neuropathy, the unilateral nerve ligation was made by a surgical procedure on the right hind limb. Pain sensitivity was measured by the hot plate test. Results: Different CWSS regimes (0.5-3 min) induced time-dependent analgesia. Nerve ligation did not alter the CWSS induced analgesia. Caerulein (0.025, 0.05 and 0.1 mg/kg) induced analgesia in both nerve ligated and intact animals. Different doses of proglumide (20, 40 and 60 mg/kg) alone produced analgesic effect. The response of caerulein was not inhibited by proglumide. In the stressed mice, both drugs and the combination of them showed analgesia but there appeared to be no potentiation in CWSS- induced analgesia. Our results indicate no significant relationship between CCK receptors and the CWSS- induced analgesia. Conclusion: Nevertheless, CWSS as an alternative to drug treatment in neuropathic pain requires more studies.
The Bezier Control Points Method for Solving Delay Differential Equation  [PDF]
Fateme Ghomanjani, Mohammad Hadi Farahi
Intelligent Control and Automation (ICA) , 2012, DOI: 10.4236/ica.2012.32021
Abstract: In this paper, Bezier surface form is used to find the approximate solution of delay differential equations (DDE’s). By using a recurrence relation and the traditional least square minimization method, the best control points of residual function can be found where those control points determine the approximate solution of DDE. Some examples are given to show efficiency of the proposed method.
The Impact of Financial Crisis on B2C e-Commerce  [PDF]
Fateme Ghadami, Abdollah Aghaie, Morteza Mohammadkhan
iBusiness (IB) , 2010, DOI: 10.4236/ib.2010.22024
Abstract: Many experts believe that the global financial crisis in 2008 is the worst of its kind since the Great Depression in 1929. The crisis was started from housing market in the US and spread quickly into financial markets. It has had a ripple effect around the world and many other industrialized economies were troubled by its consequences and almost every industry has been influenced by its outcomes. Online retail (or B2C e-Commerce) as a part of retail industry was not immune from the financial crisis and its sales has a dramatic decline. In this paper it is found that 3 factors are main players which have impacted on online retail sales including: less credit available; increasing saving rate and decreasing consumption expenditures and falling consumer confidence and sentiment. Also by representing several figures and tables, factors affecting this trend such as age class, income and gender are discussed.
Solving the Optimal Control of Linear Systems via Homotopy Perturbation Method  [PDF]
Fateme Ghomanjani, Sara Ghaderi, Mohammad Hadi Farahi
Intelligent Control and Automation (ICA) , 2012, DOI: 10.4236/ica.2012.31004
Abstract: In this paper, Homotopy perturbation method is used to find the approximate solution of the optimal control of linear systems. In this method the initial approximations are freely chosen, and a Homotopy is constructed with an embedding parameter , which is considered as a “small parameter”. Some examples are given in order to find the approximate solution and verify the efficiency of the proposed method.
Involvement of Serotonergic System and Magnesium on Anxiolytic Effects of Pomegranate in Male Mice  [PDF]
Mahsa Hadipour Jahromy, Azadeh Shariatifar, Somaye Samiee, Melica Vaziri, Maryam Bagheri Shahraki, Shirin Mansoori Dara
World Journal of Neuroscience (WJNS) , 2014, DOI: 10.4236/wjns.2014.44032
Abstract:

The anxiolytic activities of Punica granatum L. fruit juice (PGFJ) in various validated animal models of anxiety and amnesia have been recently reported in mice. Similarly, anxiolytic-like activity of magnesium chloride has been exhibited in the elevated plus-maze test in mice, in some studies. Buspirone is an anxiolytic psychoactive drug with known effects on 5-HT1A receptors that its action is not related to benzodiazepines. The purpose of the present study was to examine interactions between PGFJ, magnesium (Mg) and buspirone as a partial agonist of 5-HT1A receptors in producing anxiolytic-like activity in the elevated plus maze in mice. The anxiolytic-like effect of PGFJ (5, 10 and 20 ml/kg, orally), buspirone (5 mg/kg, i.p), Mg (50 mg/kg, orally) and their interactions were evaluated after ten days’ treatment. PGFJ given at all doses induced an anxiolyticlike effect significantly increasing the percentage of the time spent in the open arms, and the percentage of the open arm entries, in a dose-dependent manner. Buspirone showed anxiolytic effect after ten days; however, its effect was roughly comparable to the effect of PGFJ 5 ml/kg. Buspirone in combination with PGFJ (5 ml/kg), did produce more effect compared to buspirone alone and nearly in the range of PGFJ 5 ml/kg response. Also, Mg induced an anxiolytic-like effect that was more than effects observed by buspirone 5 mg/kg. However, binary application of buspirone and Mg showed anxiolytic effects more than buspirone, alone. In another group, Mg in combination with PGFJ (5 ml/kg), produced more anxyolitic effects compared to either Mg or PEF alone. It can be concluded that Pomegranate anxyolitic-like effect is dependent on interactions with both GABAergic (related to Mg) and serotonergic (5-HT1A) systems.

Comparison of rebonding effect on microleakage of class V composite restorations using two low viscosity resins: an in vitro study
Azita Kaviani,Fateme Asareh
Journal of Dental Medicine , 2012,
Abstract: Background and Aims: Although composite resin restorations have many advantages, they can lead to several clinical problems. The primary reason for these problems is microleakage. The aim of this study was to compare the rebonding effect on microleakage of class V composite restorations using two low viscosity resins.Materials and Methods: In this in vitro study, 60 class V composite restorations were performed in buccal and lingual surfaces of human extracted premolars with the occlusal margin in enamel and the gingival margin in dentin/cementum. The teeth were randomly divided into 3 groups: (I) restorations with no rebonding, (II) restoration margins rebonded with an enamel adhesive (Margin Bond), (III) restoration margins rebonded with a specific unfilled resin. The specimens were then thermocycled and immersed in 0.5% fuchsin dye solution. The samples were sectioned longitudinally and observed under a stereomicroscope for assessment of microleakage. The data were analyzed by Kruskal-Wallis, Wilcoxon and Mann-Whitney tests. P<0.05 was considered as the level of significance.Results: Statistical analysis showed a significant difference in the microleakage of gingival margins (P<0.0001), but not in enamel margins (P=0.148). Microleakage at the gingival margins of group (III) was significantly less than that of group (II). Group (I) showed the highest amount of microleakage.Conclusion: Rebonding by a low viscosity resin reduces microleakage at the gingival margins of class V composite restorations, but has no significant effect on the occlusal margins.
The Effect of Galanin on the Mean Plasma of Gonadotropins in Female Goats fed Different Levels of their Energy Requirements
fateme aboutalebi,homayoun khazali
Physiology and Pharmacology , 2009,
Abstract: Introduction: The existence of a close relationship between energy status and reproductive function is well documented, but its underlying mechanisms remain to be fully unfolded.Galanin is an orexigenic agent and has been demonstrated as putative regulator of gonadotropin secretion in rats. There is no study to show the interaction of different levels of energy intake and galanin on gonadotropins secretion in ruminants, therefore the goal of this study was to determine whether galanin affects the mean plasma concentrations of LH and FSH in the female saanen goats fed different energy content in diets. Methods: Nine female saanen goats were randomly divided into 3 groups.Animals of all groups were fed either 50% , 100% and 150% energy content in diet for a month.After a month, goats were received 1μg galanin /kg body weight into their jugular vein.Blood samples were collected every 30 minutes from jugular vein of all goats 3.5h before and 3.5h after injection of galanin.Blood plasma were assayed for plasma LH and FSH concentrations by RIA. Results: Injection of galanin only in 150% dietary energy intake significantly decreased the mean plasma concentrations of LH and FSH whereas in 50% and 100% dietary energy intake , injection of galanin had no effect on the mean plasma concentrations of LH and FSH. Conclusion: These results indicated that galanin may negatively affects mean plasma concentrations of LH and FSH in the female saanen goats only with positive energy balance.
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