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Search Results: 1 - 10 of 1506 matches for " Mahdi Gholami Mehr "
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Using AdaBoost Meta-Learning Algorithm for Medical News Multi-Document Summarization  [PDF]
Mahdi Gholami Mehr
Intelligent Information Management (IIM) , 2013, DOI: 10.4236/iim.2013.56020
Abstract:

Automatic text summarization involves reducing a text document or a larger corpus of multiple documents to a short set of sentences or paragraphs that convey the main meaning of the text. In this paper, we discuss about multi-document summarization that differs from the single one in which the issues of compression, speed, redundancy and passage selection are critical in the formation of useful summaries. Since the number and variety of online medical news make them difficult for experts in the medical field to read all of the medical news, an automatic multi-document summarization can be useful for easy study of information on the web. Hence we propose a new approach based on machine learning meta-learner algorithm called AdaBoost that is used for summarization. We treat a document as a set of sentences, and the learning algorithm must learn to classify as positive or negative examples of sentences based on the score of the sentences. For this learning task, we apply AdaBoost meta-learning algorithm where a C4.5 decision tree has been chosen as the base learner. In our experiment, we use

An Expert System for Advising to Buy a FootballPlayer Using Visual Prolog  [PDF]
Mahdi Gholami mehr, Hossein Shirazi
Intelligent Information Management (IIM) , 2012, DOI: 10.4236/iim.2012.44020
Abstract: This work presents the design of an Expert System that aims to advice the club teams to buy a football player in the post that they needed. Suggesting different player in many posts by an expert person is based on football experience, knowledge about the player and the club that he works. For mechanization the ability of this person, we use Expert System because it can model the ability of a person in solving a problem. Visual Prolog language is used as a tool for designing our Expert System.
The Impact of Exited Pollutants of Cement Plant on the Soil and Leaves of Trees Species: A Case Study in Golestan Province  [PDF]
Mahdi Farzadkia, Mitra Gholami, Ehsan Abouee, Zahra Asadgol, Shahram Sadeghi, Hossein Arfaeinia, Maryam Noradini
Open Journal of Ecology (OJE) , 2016, DOI: 10.4236/oje.2016.67038
Abstract: Background & Aims: Cement industry is very contaminated. Contaminants resulting from industries include dust, carbon compounds, sulfur and nitrogen. The purpose of this study was to evaluate the output of pollutants from cement plants in soil samples and leaf tree species. Methods: This study descriptive-analytic was designed tree species, plants and soil around the plant. Samples from four different stations within 500 meters of factory and 21 packages (each package contains three examples of the sample) were sent for laboratory tasks. Information of sampling stations in the soil, the plants and factories of qualitative and quantitative tests on samples of soil pollutants output of factories, plant species and trees daily and using written lists were collected. After the sampling, the samples were measured using standard methods and analyzed using statistical software. Results: Distribution of the total amount of metals in oak and black plants and reed Talo is normal and can be used for parametric tests. Also, there is no significant relationship statistically among the total amount of metals in plants such as oak trees, reed and Siah Talo. Conclusions: According to the findings of this study, we can conclude that dust subsides the leaves of three species of oak and black Talo and reed which contain considerable concentrations of metals such as silver, barium, bismuth, cesium, chromium, cobalt, cadmium and arsenic.
Effectiveness of Rice Husk Ash in Removal of Phenolic Compounds from Aqueous Solutions, Equilibrium and Kinetics Studies
Majid Kermani,Mitra Gholami,Abdolmajid Gholizade,Mahdi Farzadkia
Iranian Journal of Health and Environment , 2012,
Abstract: Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background and Objectives: Phenols in trace quantities are usually present in the treated effluent of many wastewater-treatment plants. Phenol compounds even at low concentration can cause toxicity, health and significant taste and odor problem in drinking waters. This research focuses on understanding the sorption process and developing a cost-effective technology for the treatment of water contaminated with phenolic compounds, which are discharged into the aquatic environment from a variety of sources. In order to remove phenolic compounds from water, a new natural sorbent, rice husk ash, was developed.Materials and Methods: Removal of phenol, 2-chlorophenol and 4-chlorophenol were characterized by spectrophotometric technique at wavelengths of 269.5, 274 and 280 nm, respectively, under batch equilibrium conditions and via changing the parameters of contact time, initial pH, and initial concentration of adsorbates and dosages of sorbent. Finally, the results were analyzed by the kinetic and isotherm models.Results: in this study, the equilibrium time was found to be 240 min for full equilibration of adsorbates. Removal percent of 2-chlorophenol was lower than two others. The maximum removal of phenol, 2-CP and 4-CP was observed at an initial pH of 5. The percentage removal of these phenolic compounds increased with increasing adsorbent dose and decreasing initial concentration. In kinetics studies, correlation coefficient and ARE factor showed that the sorption of phenol (R2=0.9999), 2-chlorophenol (R2=0.9992) and 4-chlorophenol (R2=1) fitted by pseudo second order model. Isotherm studies also revealed that, Langmuirmodel for phenol (R2=0.9499), Freundlich model for 2-chlorophenol (R2=0.9659) and 4-chlorophenol (R2=0.9542) were the best choices to describe the sorption behaviors.Conclusion: Sorption process is highly dependent on the pH and it affects adsorbent surface characteristics, the degree of ionization and removal efficiency. At high pH hydroxide ions (OH-) compete for adsorption sites with phenol molecules. The sorption was done rapidly and a plateau was reached indicating the sorption sites occuupied till they were saturated. Since the increasing sorbent dose would improve sorption site, its increasing enhances phenolic compounds removal. st1":*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso
Evaluation of Risk Factors Related with Neonatal Patent Ductus Arteriosus in Hospitalized Neonates of Neonatal Intensive Care Unit
Reza Saeidi,Eftekhar Mahmoodi,Mahdi Eslami,Mahboobeh Gholami
Zahedan Journal of Research in Medical Sciences , 2012,
Abstract: Background: Patent ductus arteriosus or patent arterial duct (PDA) is a condition in which a structure called the ductus arteriosus, normal in fetal life, remains into infancy and onwards, when it should have disappeared. Thus, in this study we want to discuss about frequency of its symptoms and risk factors. Materials and Methods: It is a descriptive study which has been done among 100 newborns registered in Ghaem Hospital of Mashhad. Sampling was gathered easily.Results: The most prevalent symptom among newborn babies was systolic heart murmur (89%). According to the obtained risk factors, hypoxia (71%) and acidosis (70%) are followed by prematurity (41%). Out of all registered newborn babies 68% were suffering from associated disorders.Conclusion: For achieving an on-time diagnosis of PDA, clinical examination of heart and respiratory symptoms must be examined very precisely. Newborn babies must be examined in terms of two risk factors: prematurity and light weight.
Three dimensional socket preservation: a technique for soft tissue augmentation along with socket grafting
Gholam Ali Gholami, Maryam Aghaloo, Farzin Ghanavati, Reza Amid, Mahdi Kadkhodazadeh
Annals of Surgical Innovation and Research , 2012, DOI: 10.1186/1750-1164-6-3
Abstract: We reviewed this technique through a case report and discuss it’s benefit in compare to other socket preservation procedures.The main advantages of RPC graft would be summarized as follows: stable primary closure during bone remodeling, saving or crating sufficient vestibular depth, making adequate keratinized gingiva on the buccal surface, and being esthetically pleasant.
Catalytic Ozonation of Phenolic Wastewater: Identification and Toxicity of Intermediates
Mahdi Farzadkia,Yousef Dadban Shahamat,Simin Nasseri,Amir Hossein Mahvi,Mitra Gholami,Ali Shahryari
Journal of Engineering , 2014, DOI: 10.1155/2014/520929
Abstract: A new strategy in catalytic ozonation removal method for degradation and detoxification of phenol from industrial wastewater was investigated. Magnetic carbon nanocomposite, as a novel catalyst, was synthesized and then used in the catalytic ozonation process (COP) and the effects of operational conditions such as initial pH, reaction time, and initial concentration of phenol on the degradation efficiency and the toxicity assay have been investigated. The results showed that the highest catalytic potential was achieved at optimal neutral pH and the removal efficiency of phenol and COD is 98.5% and 69.8%, respectively. First-order modeling demonstrated that the reactions were dependent on the initial concentration of phenol, with kinetic constants varying from 0.038?min?1??([phenol]o = 1500?mg/L) to 1.273?min?1 ([phenol]o = 50?mg/L). Bioassay analysis showed that phenol was highly toxic to Daphnia magna (LC50 96? ?mg/L). Comparison of toxicity units (TU) of row wastewater (36.01) and the treated effluent showed that TU value, after slightly increasing in the first steps of ozonation for construction of more toxic intermediates, severely reduced at the end of reaction (2.23). Thus, COP was able to effectively remove the toxicity of intermediates which were formed during the chemical oxidation of phenolic wastewaters. 1. Introduction phenol is a hazardous contaminant and classified as a toxic and priority hazardous contaminant in the list of USEPA [1], which can be found in aqueous effluents from various industries such as the petrochemical plants, petroleum refineries, manufacturing of resins and plastics, steel production, coal conversion, surface runoff from coal mines, dyestuff, tanning, paint stripping operations, pulp and paper, pesticides, pharmaceuticals, medications, and food processing industries [2, 3]; Environmental Protection Agency has limited this contaminant concentration in surface waters to less than 1 ppb [4]. Due to its toxicity and hazardous character and an increasing social concern on environment, it is required to be removed prior to discharging to the environment. Therefore, because the traditional methods of treatment of phenolic wastewaters such as physical and biological processes are not sufficient and have their own limitations, there is a need to use effective strategies of treatment. Many investigations are available regarding the use of advanced oxidation processes (AOPs) such as ultrasonic, photooxidation, photocatalytic oxidation plasma, Fenton, photo-Fenton, wet oxidation, and ozone/ultraviolet (UV) for the degradation
Simplifying Stochastic Mathematical Models of Biochemical Systems  [PDF]
Silvana Ilie, Samaneh Gholami
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.41A038
Abstract:

Stochastic modeling of biochemical reactions taking place at the cellular level has become the subject of intense research in recent years. Molecular interactions in a single cell exhibit random fluctuations. These fluctuations may be significant when small populations of some reacting species are present and then a stochastic description of the cellular dynamics is required. Often, the biochemically reacting systems encountered in applications consist of many species interacting through many reaction channels. Also, the dynamics of such systems is typically non-linear and presents multiple time-scales. Consequently, the stochastic mathematical models of biochemical systems can be quite complex and their analysis challenging. In this paper, we present a method to reduce a stochastic continuous model of well-stirred biochemical systems, the Chemical Langevin Equation, while preserving the overall behavior of the system. Several tests of our method on models of practical interest gave excellent results.

Identification of Species Composition of Fish in the Zarivar Lake (Kurdistan Province of Iran)  [PDF]
Mansoureh Gholami, Maryam Shapoori
Open Journal of Marine Science (OJMS) , 2017, DOI: 10.4236/ojms.2017.71015
Abstract: Zarivar Lake is a small, freshwater body in the far west of Iran, situated in the north Kurdistan Province close to the city of Marivan, with an area of about 750 ha and average water depth of 4 - 5 meters. During a survey of Zarivar Lake from 2010 to 2011, some specimens were obtained by seasonal sampling in 5 stations. They were used for gill net sampling in the lake. Due to the results, 6 species from 2 families in Zarivar Lake were identified. Most of the fish species belonged to Cyprinidae family. Totally, 6 species (Cyprinus carpio, Ctenopharyngodon idella, Capoeta damascina, Chalcalburnus sp., Hypophthalmichthys molitrix and Gambosia affinis) were identified from Cyprinidae and Poeciliidae families.
Effects of IMOD? and Angipars? on mouse D-galactose-induced model of aging
Samane Ghanbari, Mahsa Yonessi, Azadeh Mohammadirad, Mahdi Gholami, Maryam Baeeri, Hamid Khorram-Khorshid, Farhad Gharibdoost, Mohammad Abdollahi
DARU Journal of Pharmaceutical Sciences , 2012, DOI: 10.1186/2008-2231-20-68
Abstract: Results showed that D-Galactose induces a significant oxidative stress and proinflammatory cascade of aging while both IMOD and Angipars recovered all of them. Interestingly, IMOD and Angipars were better than Vitamin E in improving male sex hormones in aged mice. This effect is so important and should be considered as an advantage although it cannot be explained with current knowledge. The conclusion is that IMOD and Angipars have marked anti-aging effect on D-galactose-induced model of aging.Use of natural medicines was increased in the world because of their lower adverse effects, price and good efficacy in most human illnesses [1-3]. Recent experimental and clinical studies have confirmed anti-aging effects of some traditionally-used herbs [4]. In the recent years, the novel registered drug named (IMOD) has shown positive effects on reduction of oxidative stress and pro-inflammatory status in various studies [5]. IMOD is a combination of ethanolic extracts of Rosa canina, Tanacetum vulgare and Urtica dioica that are combined with selenium and urea and then exposed to a pulsed electromagnetic field [6]. Angipars is also a registered drug derived from a plant named Melilotus officinalis under electromagnetic processes which has marked antioxidant effects and is used as a drug of choice for management of human diabetic foot [7,8]. Both IMOD and Angipars have been approved by Iranian Food and Drug Organisation for their main effects including human immunodeficiency syndrome and diabetic foot, respectively.Aging as an extremely complex biological phenomenon is demonstrated by accumulation of deleterious changes during the time with an increase in the chance of disease and death. The free radical and oxidative stress theory of aging is recognized as one of the most plausible and promising explanations for the process of aging [9]. Aging is associated with dysregulated immune system, weakened sex hormones and increased amount of oxidative stress markers or inflammatory
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