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Search Results: 1 - 10 of 1426 matches for " Zahra Pakdel "
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The Effects of Warm-Up Tasks on the Iranian EFL Students' Writing Ability
Zahra Pakdel,Mohammadreza Khodareza
International Education Studies , 2012, DOI: 10.5539/ies.v5n2p190
Abstract: This study aims to investigate the effects of warm up tasks as classroom activities on foreign language written production. For showing these effects, sixty out of one hundred forty Iranian sophomore EFL students from the Islamic Azad University of Lahijan branch, Iran were selected after following the Oxford Placement Test (OPT). Then, they were randomly divided into two groups; the experimental group who received the treatments on warm up tasks, and the control group who received a placebo. Both groups had to write two paragraphs of about 150 words that were considered as their pretests and posttests. The paragraphs were corrected by three experienced raters. Their scores analyzed through SPSS by applying Independent t-test, and Paired sample t-test. The findings revealed that participants in the experimental group, who had received the treatments on warm up tasks, significantly enhanced better performance in a writing test.
The Relationship between the Big Five Personality Factors and Job Burnout
Hamze Gholami Dargah,Zahra Pakdel Estalkhbijari
International Journal of Asian Social Science , 2012,
Abstract: In recent decades, research about job burnout and its relationship with the personality factors has become increasingly important in domain of psychology and management. This study aims to investigate the relationship between Burnout as measured by the Maslach Burnout Inventory(Maslach, C, Jackson, S. E., and Leiter, M. P., 1996) and the Big Five Personality Factors(Costa, P. T., and McCrae, R. R. 1989). The Participants were 196 out of 400 workers from an automobile factory of Lahijan, Iran, who were chosen randomly to participate in this study. The data was collected through questionnaires, and then analyzed through SPSS by applying descriptive statistics, and Pearsons’Cofficient Correlation. The results revealed that extroversion, agreeableness, and openness of experience had negative relationships with job burnout. On the other hand, there were positive relationships between conscientiousness and neuroticism with job burnout.
Analysis of the Magnetic Flux Density, the Magnetic Force and the Torque in a 3D Brushless DC Motor  [PDF]
Majid Pakdel
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2009, DOI: 10.4236/jemaa.2009.11001
Abstract: As permanent magnet motors and generators produce torque, vibration occurs through the small air gap due to the alternating magnetic forces created by the rotating permanent magnets and the current switching of the coils. The magnetic force can be calculated from the flux density by finite element methods and the Maxwell stress tensor in cy-lindrical coordinates. In this paper the magnetic flux density, the magnetic force and the torque of a real three dimen-sional brushless DC motor are simulated using Maxwell 3 D V 11.1.
Comparison of the Stress, Sexual Disfunction, and Mental Happiness Coping Strategies in Two Groups of Normal Married Women and Women with Marital Conflicts  [PDF]
Zahra Zanbagh, Zahra Chabokinezhad
Creative Education (CE) , 2018, DOI: 10.4236/ce.2018.92020
Abstract: In the era that rapid and unpredictable changes have happened in human life, the family is still one of the sources that have a prominent role in protecting people, their social and emotional support, but data from past decades indicate an increase in divorce rates both in the world and in Iran. The present research aimed to compare coping strategies with stress, sexual disfunction, mental happiness in two groups of normal married women and women with marital conflicts. The research employed a causal-comparative method. The statistical population included all normal married women and women with marital conflicts who referred to counseling centers in Yazd city in 2016-2017. To this end, 150 women (75 normal married women and 75 women with marital conflicts) were selected using available sampling method. They completed the Lazarus and Fulkman (1985), Female Sexual Function Index (ROS) (2000), Panas Mental Happiness (1988) questionnaires. Data were analyzed using ANOVA and Independent T-test in SPSS software. The findings showed that there is a difference between strategies for coping with stress, sexual disfunction, and mental happiness in both married women and women with marital conflicts.
Effect of soluble Carcinoembryonic antigen on myogenic and enterocytic differentiation
Abbas Pakdel,Fakhraddin Naghibalhossaini
Koomesh , 2013,
Abstract: Introduction: Carcinoembryonic antigen (CEA), a glycophosphatidyl inositol (GPI) anchored glycoprotein, is over-expressed in various cancers, including colorectal carcinomas. Inhibition of cell differentiation can cause cancer. Previous studies show transfection and over-expression of CEA gene in myoblasts or colonocytes leads to inhibition of cell differentiation. We investigated whether soluble CEA has a role in inhibition of cell differentiation.Materials and Methods: Monolayer cultures of L6, C2C12, Caco-2 and CHO cell lines were grown in dulbecco's modification of eagle's medium (DMEM) containing 10% fetal bovine serum (FBS). For differentiation induction C2C12 and L6 cell lines media, was changed to DMEM containing 2% horse serum. CEA concentration was measured in harvested media by ELISA assay. H&E staining, CK assay and RT-PCR for myogenin gene were used for C2C12 differentiation experiments. Results: The results showed although commercial pure CEA and LS-180 conditioned media (contain high level of CEA) have inhibitory effects on Caco-2 differentiation, but it can also inhibit differentiation of control groups. We observed the effect of high concentration of CEA (5μg/ml) on L6 differentiation is identical with the effect of BSA as control. C2C12 differentiation was inhibited in response to LS-180 conditioned media at morphological level and myogenin expression. CK activity was significantly lower in LS-180 conditioned media (P= 0.0012) and CHO (P= 0.0002) conditioned media groups in comparison to control group.Conclusion: Our finding shows soluble CEA antigen did not have a significant effect on cell differentiation.
Faraday Rotation and Circular Dichroism Spectra of Gold and Silver Nanoparticle Aggregates
Sahar Pakdel,MirFaez Miri
Physics , 2012, DOI: 10.1103/PhysRevB.86.235445
Abstract: We study the magneto-optical response of noble metal nanoparticle clusters. We consider the interaction between the light-induced dipoles of particles. In the presence of a magnetic field, the simplest achiral cluster, a dimer, exhibits circular dichroism (CD). The CD of a dimer depends on the directions of the magnetic field and the light wave vector. The CD of a populous cluster weakly depends on the magnetic field. Upon scattering from the cluster, an incident linearly polarized light with polarization azimuth $\varphi$, becomes elliptically polarized. The polarization azimuth rotation and ellipticity angle variation are sinusoidal functions of $2 \varphi$. The anisotropy and the chirality of the cluster control the amplitude and offset of these sinusoidal functions. The Faraday rotation and Faraday ellipticity are also sinusoidal functions of $2 \varphi$. Near the surface plasmon frequency, Faraday rotation and Faraday ellipticity increase.
Misleading Communication VS. Effective Aviation Management  [PDF]
Keshavarzi Zahra
Intelligent Information Management (IIM) , 2011, DOI: 10.4236/iim.2011.36029
Abstract: In this paper some of the important problems and issues such as human and communication errors in safety and civil aviation management are presented. The problems arise from misleading information from different sources. To avoid the above problems, a centralization of the information is proposed here. To centralize the information for Air Traffic Management (ATM), a mining data routing system called SCADA (Supervisory Control and Data Acquisition) system is suggested in this study. The utilization of SCADA system will helps to capture air traffic information and aircraft data via satellite technology and transfer it to data mining center and then to central organization. The stored digital data will exchange the information between different organizations and will be used by management systems. The stored reliable information helps to make an appropriate decision in the Air Traffic Management system.
Epidemiology of hodgkin’s lymphoma  [PDF]
Zahra Mozaheb
Health (Health) , 2013, DOI: 10.4236/health.2013.55A003

The epidemiology of Hodgkin’s Lymphoma (HL) varies with age at clinical onset. In developing countries, the disorder appears predominantly during childhood and its incidence decreases with age, while in industrialized countries, the incidence rate increase with age. There has long been a view that the differences in descriptive epidemiology of Hodgkin’s Lymphoma around the world, and also between children, young adults and older adults may reflect differences in etiology between them. Hodgkin’s Lymphoma has long been suspected to have an infectious precursor, and indirect evidence has implicated Epstein-Barr virus (EBV), as a causal agent. The etiology of EBV-negative cases remains obscure. Epidemiological investigation of the etiology of Hodgkin’s Lymphoma is making steady progress, and it leads to a better understanding and hence prevention. This review considers in detail the descriptive and the etiological epidemiology of Hodgkin’s Lymphoma.

The Unique Folding Style in the Zagros Simply Folded Belt, the Kuh-e Qazi Anticline, South Iran  [PDF]
Zahra Maleki
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.57047
Abstract: The study area is located in the Zagros Simply Folded Belt of Iran and in the interior Fars sub-basin (175 km from Persian Gulf). The Zagros fold-thrust belt is home to one of the largest petroleum producing reservoirs in the world. Structures in this area have complications and the study anticline has unique structures in the Fars region. In the study area, the Kuh-e Qazi anticline due to special fold style and rotation toward Northeast is the unique structure between anticlines of the Zagros belt. This anticline is fault bend fold and plunge of the anticline in eastern part rotated toward Northeast along with the Nezamabad fault trend. In this area, the Kuh-e Qazi anticline has asymmetric structures and some faults such as the Nezamabad and the Sarvestan strike slip fault effect on this anticline. The geometry of anticlines in the Zagros fold-thrust belt is affected by the type of deformation and mechanical behavior of stratigraphic units specially detachment units. The purpose of this research is to determine of folding pattern of the Kuh-e Qazi anticline and define structural features affected on them in the study area. This paper presents a part of the results of a regional study of the Fars province in the Zagros Simply Folded Belt, based on original fieldwork, satellite images, structural sections, geological maps and well data. Also, we use some software as Global Mapper and Tectonics FP for preparing some data.?Based on the research, which have been done, the boundary between ductile and frictional substrates causes rotation as a result of lateral, along-strike migration of the ductile substrate. The ductile or viscose layer in the study area is Hormuz Series. Due to lack or thinning of Hormuz salt over the Gavbandi basement high and in the eastern side of the Nezamabad basement fault, causes translation of strain and anticlockwise rotation in Southeast of the Kuh-e Qazi anticline toward Northwest unlike foreland basin due to the Nezamabad fault activity. This style between all of the anticlines in the study area is unique that rotates unlike foreland basin. In addition, influence on anticlockwise rotation, extensional stress has been created and then salt dome cropping out in Southeast of the Kuh-Qazi anticline. One of the best evidence for effect of extensional stress is triangular facets in this part of the study anticline. Based on folding analysis (geometry of axial plane and fold orientation), it is clearly confirmed that the translation of strain and anticlockwise rotation in Southeast of the Kuh-e Qazi anticline toward Northwest
A New Topology and Control Strategy for Harmonic Elimination and Power Factor Correction Using a Series Active Power Filter
Majid Pakdel,Khalil Rahimi Khoshoei
Lecture Notes in Engineering and Computer Science , 2007,
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