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Search Results: 1 - 10 of 957 matches for " Mehran Karimian Yousefi "
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The Role of Parents’ Incarnated Cultural Capital on Their Children’s Studying Habit  [PDF]
Mehran Karimian Yousefi, Rozita Sepehrnia, Nassim Majidi Ghahroudi
Advances in Literary Study (ALS) , 2018, DOI: 10.4236/als.2018.61004
Abstract: The purpose of this study, as an applied study, was to investigate the role of parents’ incarnated cultural capital on their children’s studying habits. To do so, the design of the study was chosen to be a survey study. The population of the current study were 1200 parents of the primary school students living in Tehran zone one. Due to the limitation of the study, the Cochran formula was used and 291 individuals were selected. In this study, random-cluster sampling was used and the questionnaire was distributed among the participants. To collect theoretical information, different sources such as the related books and articles were used. To collect information for the matter of the research hypotheses, a questionnaire was used. In the descriptive statistics, first, the necessary indexes were obtained, and then, the reliability and validity of the questionnaire were computed. Moreover, to see the normalization of the data, Kolmogorov-Smirnov was used. Then after, to test the hypotheses, Pearson coefficient, and regression on SPSS have been used. Based on the obtained in-formation, all of the hypotheses were supported and incarnated cultural capital of the parents and its different aspects had positive effects of the studying habit of the children.
The Assessment of Knowledge, Attitude and Behavior of Women in Qom Toward Breast Cancer Screening Methods 2009
Z. Karimian,N. Mehran,Z. Haddad
Research Journal of Medical Sciences , 2012, DOI: 10.3923/rjmsci.2010.116.118
Abstract: Breast cancer is the most common cancer among women and screening of this cancer is one of the best method for early diagnosis. Due to this study was not performed in Qom, this research is necessary. The aim was to determine the knowledge, attitude and behavior of women in Qom toward breast cancer screening methods 2009. This study was a descriptive-analytic. The samples consisted of 404 women, they were selected using convenient sampling method and exclusion criteria were history of breast. The assessment of knowledge, attitude and behavior of women in Qom toward breast cancer screening methods 2009 cancer in women and their family. Data were gathered by a questionnaire and were analyzed by SPSS software. The mean of age in this women was 30.25 years and the most of them were hoomy, married and diploma education. Their knowledge regarding the screening methods were moderate (61/9%). The attitudes regarding the implementation of screening methods were favorable (99/5%), BSE was not performed in 248 cases of upper than 20 years (64/9%), 311 cases (83/5%) had never referred for a CBE and 33 cases of upper than 40 years, 78/5% of them had no history of mammography. The results indicate a moderate level of knowledge about screening methods and a positive attitude towards them. However, most of the women do not practice screening methods that indicate attention to screening method is necessary.
A Comparative study on the chaperone-like activity of camel and bovine β-caseins
Mehran Miroliaei,Mozhgan Shirazi,Reza Yousefi
Journal of Paramedical Sciences , 2011,
Abstract: Molecular chaperones are characterized by a general behavior, arresting the exposed hydrophobic surfaces of denaturing substrate proteins. In the present study, the capacity of β-caseins (β-CN) from camel and bovine milk in suppression of thermal aggregation process of apo-yeast alcohol dehydrogenase (YADH) was assessed. Apo-I enzyme was prepared by removal of the structural zinc; while apo-II-protein was obtained by depleting conformational and catalytic zinc atoms. Fluorescence spectroscopy using ANS probe revealed greater hydrophobic surface in apo-II ADH. Considerable decrease in aggregation of the heat treated protein molecules was observed upon exposing to β-CNs (camel, bovine). Bovine β-CN afforded more adverse effects on thermal aggregation. A direct correlation between casein’s chaperone activity and structural stability of the substrate proteins was displayed. Moreover, an association between casein source and chaperone-like activity is suggested.
Improve the Amplification of LTP (Lipid Transfer Protein) Gene
Mohammad Karimian,Mehran Miroliaie,Kamran Ghaedi,Zohreh Zahraie
Research Journal of Biological Sciences , 2012, DOI: 10.3923/rjbsci.2010.802.804
Abstract: Lipid Transfer Protein encoded by LTP gene in plants. This is a GC rich gene. These base causes that designed primers for LTP gene produce many secondary structures in annealing step of PCR and eventually does not produce a suitable product. Substances such as betaine, Dimethyl Sulfoxide (DMSO) and Ammonium Sulfate (AMS) can to eliminate this obstacle. In this study, the gradient of each material was placed in the PCR reaction and ultimately the optimum concentration for any of this material was obtained. In between, 4.5 μL betaine (5M), 2.25 μL DMSO (10%) and 2.25 μL AMS in the overall volume of 25 μL of PCR mixture were reported optimal concentrations.
Construction of a Vector Containing Coding Sequence of Lipid Transfer Proten-2 (LTP2) Gene from Rice
Mohammad Karimian,Mehran Miroliaie,Kamran Ghaedi,Aliakbar Ehsanpour,Zohreh Zahraie
Journal of Molecular Genetics , 2013, DOI: 10.3923/jmolgene.2011.1.4
Abstract: Lipid Transfer Proteins (LTPs) are group of proteins with average molecular weight in plants that have potential applications especially in drug delivery systems. This research has been designed with the aim to construction of a vector containing coding sequence of Lipid Transfer Proten-2 (LTP2) gene from rice. There is no intron in rice LTP2 gene. In here, pGEX-6P-2 vector was used. First was extracted rice genome. Then, LTP2 gene was amplified with specific primers and PCR technique. In the next stage vector and LTP2 gene was digested with BamHI and XhoI restriction endonuclease enzymes. Then, digested vector and digested LTP2 gene were ligated in appropriate molar ratios.
Large scale screening of commonly used Iranian traditional medicinal plants against urease activity
Farzaneh Nabati, Faraz Mojab, Mehran Habibi-Rezaei, Kowsar Bagherzadeh, Massoud Amanlou, Behnam Yousefi
DARU Journal of Pharmaceutical Sciences , 2012, DOI: 10.1186/2008-2231-20-72
Abstract: 137 Iranian traditional medicinal plants were examined against Jack bean urease activity by Berthelot reaction. Each herb was extracted using 50% aqueous methanol. The more effective extracts were further tested and their IC50 values were determined.37 plants out of the 137 crude extracts revealed strong urease inhibitory activity (more than 70% inhibition against urease activity at 10 mg/ml concentration). Nine of the whole studied plants crude extracts were found as the most effective with IC50 values less than 500 μg/ml including; Rheum ribes, Sambucus ebulus, Pistachia lentiscus, Myrtus communis, Areca catechu, Citrus aurantifolia, Myristica fragrans, Cinnamomum zeylanicum and Nicotiana tabacum.The most potent urease inhibitory was observed for Sambucus ebulus and Rheum ribes extracts with IC50 values of 57 and 92 μg/ml, respectively.Ureases (urea amidohydrolases, EC (3.5.1.5) are a group of widespread enzymes in nature, classified as the most proficient enzymes (with proficiency more than 1014), stand as protagonist in biochemistry for several reasons. Urease was the first ureolytic enzyme obtained and named in the late nineteenth century, with landmark significance in enzymology as the first enzyme crystallized (in 1926 by Sumner) to approve the proteinous nature of the enzymes [1]. Also, as ascertained by Dixon et al. in 1975, urease was the first enzyme shown to possess nickel ions in its active site, essential for activity [2]. Since its substrate; urea is pervasively available in nature, urease was important to provide organisms with nitrogen in the form of ammonia for growth [3]. Despite the diversity in the molecular structures of urease, the amino acid sequences of the active sites are principally similar in all of the known them and consequence of this fact is the same catalytic mechanism. The active sites are always located in α subunits and contain the binuclear nickel centre, in which the Ni–Ni distances range from 3.5 to 3.7 Angstrom [4].Urease as
Physiographic-Tectonic Zoning of Iran’s Sedimentary Basins  [PDF]
Mehran Arian
Open Journal of Geology (OJG) , 2013, DOI: 10.4236/ojg.2013.33020
Abstract:

Base on geological history evaluation using regional stratigraphy, sedimentary environments, magmatic activities, metamorphism and structural trend in Iran, physiographic-tectonic zoning map of Iran’s sedimentary basins has prepared. This map has prepared to point out the basement tectonics role in Iran. It contains twenty-four different provinces. Iran has composed from different plates: Arabian plate in south and west, Cimmerian manipulated in north and east, Eurasian plate in northeast margin. Cimmerian manipulated at least can be divided to the smaller part, East-Central Iran and North-Central Iran microcontinents. There are evidences for thick-skinned tectonics in the border zones of these plates and microcontinents, especially in Sanandaj-Sirjan overthrust belts that it formed by crustal stacking wedges. Also, Neoproterozoic-Phanerozoic Tectonic column in the Arabian, Cimmerian and Eurasian plates under Iran Country area have introduced.

Comparing the Recall to Pleasant and Unpleasant Face Pictures in Depressed and Manic Individuals  [PDF]
Mehran Sardaripour
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.51004
Abstract:

The main purpose of the present study is to compare the perception of recalling pleasant and unpleasant face pictures in the case of depressed and manic people. Methodology: The present study is an analysis based on a comparative type research; the statistical sample is made up of depressed and manic people (males) referred to LAVASANI Hospital in Tehran City using Beck’s depression questionnaire and a diagnostic interview based on (SCID) DSMIV 30 depressed individuals who were selected after the process of screening. Ranging from moderate to high depression levels (with a cut-off point of 21 and higher), samples of 30 people with manic and 30 depressed people were compared with 30 healthy individuals. It should be mentioned that three groups were convergent in terms of age, gender, marital status and educational level. Then, a test involving computer-based cognitive-neural recall (emotional facial Pictures) was carried out on the related subjects. Findings: A t test of both independent groups was used to evaluate the convergence of the groups and multi variable bilateral variance analysis (MANOVA) was used to assess the pleasant and unpleasant perception of images among three groups. The results of the study showed that there is a difference among three groups in terms of recalling pleasant and unpleasant faces so that the depressed group shows a higher level of recall in terms of unpleasant images than the other two groups, but it indicates little recall of pleasant images in comparison to the other two groups (p < 0/05). Conclusion: The findings of the present study include some explicit outcomes in relation to the application of therapeutic approaches and concentrated educational methods on the amendment of emotional bias in depressed and manic people.

Semimicroscopic Dispersive Analysis of Nuclear-Nuclear Collisions on the Basis of Folding Potential  [PDF]
Abdolmajid Izadpanah, Marzieh Yousefi
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.512113
Abstract:

A semimicroscopic analysis of a set of experimental data of elastic α + 12C scattering was performed at several laboratory energies. The Woods-Saxon parameters were adjusted to obtain the best χ2 fit to the scattering data. The energy systematics of the positions of Airy minima was constructed, and it was shown that their positions depend linearly on the inverse center of mass energy. The parameters of the model potential have been determined unambiguously. It has been shown that the energy dependence of the volume integrals satisfies the dispersion relation and agrees well with the results obtained within a phenomenological analysis. Also, it has been shown that the found positions of the Airy minima satisfy the rule of the quadratical dependence of the position of the Airy minima on the reduced mass of the colliding nuclei.

Calcitonin gene related peptide and its functions
Karimian M
Tehran University Medical Journal , 1998,
Abstract: Calcitonin Gene Related Peptide (CGRP) was first reported in 1982. This peptide contains 37 amino acids which could be found in Alpha and Beta forms. CGRP shows diversity both in its receptors and biological effects and up to now four different types of receptors have been reported. It can act like a neurotransmitter, local hormone and neuromodulator. They have a variety of effects on different organs such as a potent effect on vasodilation and smooth muscle relaxation. Ability of CGRP for induction of protein extravasation from blood vessels was uncertain. In this study intra-articular infusion of 10^-6 M CGRP to the rat knee joint induced significant protein extravasation into the rat knee joint space. The amount of protein was detected by modified Iawata method which could detect amount of protein between 5-500 mg/L. Higher and lower concentrations failed to induce protein extravasation. Failure in higher concentration was likely due to significant fall in blood pressure. In the presence of an arterial hypotension induced by an ? adenoreceptor antagonist, 10^-6 M of CGRP failed to produce protein extravasation. This effect of CGRP was a specific active effect and not a passive effect due to its potent vasodilation effect, as similar vasodilatory response induced by a ?-adrenoreceptor agonist failed to induce protein extravasation. There is more than 50% of sensory neurons which contain CGRP and they are spread in all over the body and joints, therefore CGRP induced protein extravasation can potentiate inflammation in different organs.
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