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Effect of pivotal response treatment on social skill of 6-11 years old autistic children of Hamedan
Fereshteh Mohammad Zaheri,Seyed Majid Rafiei,Mohammad Rezaei,Enayatollah Bakhshi
Pajouhan Scientific Journal , 2013,
Abstract: Introduction: Autism is a lifetime developmental disability that determines with sever problem in social relations, communication and behavior. Regarding social interaction difficulties of these children and weakness of social skill interventions in creation of motivation. In this study we tried to examine effect pivotal response treatment method on social skill of autistic children.Material & Methods: In this randomized control trial (RCT) study, according to inclusion and exclusion criteria, 30 autistic participants (6 to 11 years old) that matched based on age, gender and mean length utterance, from especial clinics of Hamedan’s autistic persons selected and placed randomly in one of groups of intervention and control. Sessions was administered individually, lasting for 60 minutes and 2 days a week for 3 months. Both groups of children were tested before and after intervention by CCC (children’s communication checklist) to assess social skill. Data analysis was done through descriptive statistics tests and covariance analysis.Results: Findings of study showed (according to covariance analysis between before and after of intervention in two groups) there is significant changes in social skill’s ability in intervention group.Conclusion: The result of these study indicated effect of pivotal response treatment on social skills in autistic children, therefore this method recommended for speech and language pathologist.
Challenges of E-Journal Club: A Case Study  [PDF]
Nazila Zarghi, Seyed Reza Mazlom, Majid Rahban
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.36105
Abstract: Background: Journal clubs, founded by Sir William Osler in 1875, have been used as a teaching format in academic medicine for over a hundred years. New generation of journal club include EBM format, Audio journal club and the latest, E-journal clubs. This study aimed the challenges of helding E-journal club in MUMS. Method: For this, a special virtual space was designed for e-journal club and a practical article was selected for on-line comments. It was possible for participants to register in a 7-day time span. Leader of journal club sent an e-mail for participants and explained the process for them and asked them to read the article and leave a comment. As there was impossible for being on-line at the same time for participants, it was decided to design the second space for leaving comments. Both participants and leader could access the others’ comments, so the interaction became possible for them. The time for leaving comments considered 10 days. Result: Although participants included faculty members and students who were familiar with e-methods, there was no comment on the space. Conclusion: It seems, other involving factors should be considered. The other factors apart from educationals, influenced on performing and participating in new generation journal clubs which demands further observation
WATER UPTAKE AND FLEXURAL PROPERTIES OF NATURAL FILLER/HDPE COMPOSITES
Seyed Majid Zabihzadeh
BioResources , 2010,
Abstract: Composites of flour from different lignocellulosic sources with high-density polyethylene were prepared, and their water absorption and flexural properties were studied. Flour samples from loblolly pine, hybrid Euro-American poplar, and wheat straw were mixed with the polymer at 35 wt % lignocellulosics content and either zero or 2% compatibilizer. Water absorption tests were carried out on injection-molded specimens for temperatures of 30, 45, 60, and 75°C. Results indicated a significant difference among different lignocellulosic types, of which wheat straw composites exhibited the highest and the pine composites showed the lowest water absorption values. The composites with 2% MAPE showed lower water absorption compare to the composites without MAPE. This indicates that the compatibilizer plays an important role to repel the water molecules. For all four temperature conditions, rising temperature increased water absorption significantly. Composites with poplar had the highest flexural strength and modulus. Adding compatibilizer to the composites boosted the flexural properties by improving the adhesion between natural filler and the polymer matrix.
FLEXURAL PROPERTIES AND ORTHOTROPIC SWELLING BEHAVIOR OF BAGASSE/THERMOPLASTIC COMPOSITES
Seyed Majid Zabihzadeh
BioResources , 2010,
Abstract: The flexural properties of commercial bagasse-filled polyethylene (PE) and polypropylene (PP) composites were determined as a function of strain rate at room temperature. The applied strain rates were 1.5 ×10-4, 3.75×10-4, 7.5×10-4, and 1.5×10-3 s-1. The flexural modulus tended to increase linearly for the two types of composites with the logarithm of strain rate. The bending strength of polypropylene composite also behaved in a similar manner, but the polyethylene composite exhibited different behavior in which the MOR values of polyethylene composite didn’t alter appreciably as a function of strain rate. The flexural response of a polypropylene-based composite was found to exhibit higher dependency on strain rate than a polyethylene-based composite. Water absorption of both composites followed the kinetics of a Fickian diffusion process. Water absorption and dimensional instability of PE-based composites were lower than those of PP-based composites. The highest swelling took place in the thickness of the samples, followed by the width and length, respectively.
An inversion formula for transport equation in 3-dimensions using several complex variable analysis
Seyed Majid Saberi Fathi
Physics , 2015,
Abstract: In this paper, the photon stationary transport equation has been extended from $\mathbb{R}^3$ to $\mathbb{C}^3$. A solution of the inverse problem is obtained on a hyper-sphere and a hyper-cylinder as X-ray and Radon transform, respectively. We show that these results can be transformed into each other and they agree with known results.
Effect of Low-calorie Diet Supplemented with Genistein on Lipid Profile, Blood Glucose and Proinflammatory Biomarkers in Diet-induced Obese Rats
Hossein Rafiei,Fatemeh Haidari,Majid Karandish,Kosar Omidian
Jundishapur Scientific Medical Journal , 2012,
Abstract: Background and Objective: Obesity is a worldwide public health problem that results in comorbidities including diabetes, dyslipidemia, coronary artery disease and some types of cancer. It seems that soy isoflavones can improve obesity and reverse subsequent metabolic disorders. In this study, we assessed the effect of restriction of calorie supplemented with genistein on diet-induced obese rats. Subjects and Methods: Thirty rats obesed with high fat diet were divided randomly into 3 experimental groups (n=10) as follows: group 1: low calorie diet supplemented with 50mg/kgbw genistein, group2: low calorie diet supplemented with Dimethyl Sulphoxide (DMSO) (as vehicle) and group3: obese control rats with ad libitum access to standard food. After 4 weeks, fasting blood samples were collected and analyzed for biochemical analysis. Results: The results showed that administration of genistein in conjunction with low calorie diet can synergistically improve triglyceride (p=0.005), VLDL (p=0.005), total cholesterol(p=0.002) and LDL-C (P=0.003) and increase HDL-C (p=0.001) but has no effect on body weight and proinflammatory biomarkers (resistin and CRP). Restriction of calorie also resulted in the decrease of glucose level, TG, TC, LDL, proinflammatory biomarker (CRP) and increase in HDL-C (p<0.05) but has no effect on resistin level.Conclusion: It seems that administration of genistein with restriction of calorie is useful for improvement of hyperlipidemia in obese hyperlipidemic patients.
A Novel Technique for Rotor Bar Failure Detection in Single-Cage Induction Motor Using FEM and MATLAB/SIMULINK
Seyed Abbas Taher,Majid Malekpour
Mathematical Problems in Engineering , 2011, DOI: 10.1155/2011/620689
Abstract: In this article, a new fault detection technique is proposed for squirrel cage induction motor (SCIM) based on detection of rotor bar failure. This type of fault detection is commonly carried out, while motor continues to work at a steady-state regime. Recently, several methods have been presented for rotor bar failure detection based on evaluation of the start-up transient current. The proposed method here is capable of fault detection immediately after bar breakage, where a three-phase SCIM is modelled in finite element method (FEM) using Maxwell2D software. Broken rotor bars are then modelled by the corresponding outer rotor impedance obtained by GA, thereby presenting an analogue model extracted from FEM to be simulated in a flexible environment such as MATLAB/SIMULINK. To improve the failure recognition, the stator current signal was analysed using discrete wavelet transform (DWT). 1. Introduction Induction motors (IMs) play an important role in many industrial processes. Hence, IM failures should be detected at early stages before they become catastrophic and lead to shutdowns and enhanced maintenance costs. Condition monitoring is desirable for increasing machinery availability, reducing consequential damage, and improving operational efficiency [1–3]. IM faults may occur in three main parts of the machine; stator, rotor, and bearings. Rotor bars are commonly broken in squirrel cage induction motor (SCIM) due to several causes [4, 5], including (1) thermal stress, (2) magnetic stress, (3) residual stresses from manufacturing, (4) dynamic stress from shaft torques, (5) mechanical stress owed to bearing failure, and (6) environmental stresses such as moisture. In terms of condition monitoring, fault detection in SCIM is studied in two categories; steady-state condition and during start-up transient condition. For many years, researchers have focused on fault detection methods which are based on steady state such as FFT. Recently, following progress in signal processing, methods based on study of the start-up transient current have attracted attention. Traditional methods for monitoring the rotor conditions are based on frequency domain analysis of stator currents [6, 7], mechanical vibrations [8], fluxes on search coils [9], and rotor speed [10] in steady state. Motor current signature analysis (MCSA) is used by many researchers due to its availability and simplicity. The broken bars induce some harmonic components with special frequencies in stator currents (sideband frequencies), as below where is the slip and is the supply frequency. Bar
Agreement Between ABI (Ankle Brachial Index) and USD (Ultrasound Duplex Scanning) in Symptomatic Peripheral Arterial Disease Patients
Seyed Mahmood Sadr,Seyedeh Mahdieh Namayandeh,Mansoor Rafiei,Seyed Mostafa Baghaei Poor
Journal of Tehran University Heart Center , 2008,
Abstract: Background: Atherosclerosis of the peripheral arteries occurs in 12% of individuals at 65 years of age or older. At least 28% of these patients suffer from coronary heart diseases and 10% of them are afflicted with cerebrovascular diseases. To calculate the agreement between two diagnostic tests for peripheral arterial disease (PAD), namely ankle brachial index (ABI) and ultrasound duplex scanning (USD). Methods: Forty symptomatic PAD patients were enrolled in this study, and their demographic characteristics, risk factors, and symptoms as well as their ABI and USD measurements were recorded. On the basis of the symptoms and ABI and USD findings, the patients were divided into four groups and comparisons were made between them so that the associations between the findings could be analyzed. Results: The study population included 32 (80%) men at a mean age of 62.9+12.8 years (26-90). Smoking (75%) and hypertension (100%) were the most common risk factors in the men and women, respectively, followed by diabetes in both genders. Whereas the agreement between ABI and USD findings in the men was significant (Kappa=0.28, P=0.02), it was not significant (Kappa=-0.91, P=0.68) in the women. Additionally, there was a significant correlation between symptoms and ABI findings (Kappa=0.21, P=0.04), while that between symptoms and USD measurements was not significant (Kappa=0.09, P=0.3) Conclusion: The correlation between ABI findings and symptoms, especially in the men, was better than that between ABI findings and USD measurements. ABI could, therefore, be considered an appropriate tool for the initial screening of arterial stenosis and lower extremity circulation.
Genetic Properties of Milk Thistle Ecotypes from Iran for Morphological and Flavonolignans Characters
Majid Shokrpour,Mohammad Moghaddam,Seyed Abolghasem Mohammadi,Seyed Ali Ziai
Pakistan Journal of Biological Sciences , 2007,
Abstract: The aim of present study was to investigate the genetic variation within and between 32 milk thistle ecotypes collected from northern (23 accessions) and southern (9 accessions) regions of Iran along with two introduced varieties, CN seeds and Budakalaszi, for morphological and flavonolignans properties. The two collections were assessed at separate field experiments. MANOVA for all the morphological traits showed significant difference between ecotypes. Univariate ANOVA verified these differences for most of the traits in the northern ecotypes (first collection) while for southern ecotypes no significant differences were obtained for the studied traits except seed yield. Among and within ecotypes genotypic coefficient of variation indicated higher level of variation among ecotypes than within ecotypes. In both of the experiments, there was a large genetic variation for silybin and silymarin quality and quantity. Cluster analysis of 34 accessions was performed for morphological traits and silymarin and silybin characteristics, separately. The resulting dendrogram based on silybin and silymarin characteristics revealed that the native accessions such as Dezfoul, Fereydounkenar and Nour, had highest flavonolignans and they were better than the foreign varieties. Also, there was no clear relationship between clustering based on morphological traits and flavonolignan compounds.
The Evaluation of Rehabilitation after Cochlear Implant and Child's Age in Social Development of 6-9 Year Old Cochlear Implanted Children in Compare with Normal Hearing Children (Fars CI Center)
Seyed Basir Hashemi,Leila Monshizadeh,Majid Saffarinia
Jundishapur Scientific Medical Journal , 2012,
Abstract: Background & Objective: Children with hearing loss have too many problems in society. Nowadays cochlear implant surgery and rehabilitation are used for deaf children and they can develop their language and social skills by this way. Therefore the purpose of this study is to make a quantitative comparison of parameters of social development between children with cochlear implants and normal hearing children.Subjects and Methods: Data were obtained from 30 children with cochlear implant and 30 normal children. In order to gather the data we used the winelend test after that we performed statistical analysis on them.Results: We saw no significant difference in social development of normal and cochlear implanted children. However, the child's age when this operation is performed has an important factor in development.Conclusion: Cochlear implant is useful for speech and language development. Moreover it is important in social development and decline of anxiety in children and their parents.
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