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Search Results: 1 - 10 of 224345 matches for " R Salehi "
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Molecular Detection and Identification of Α-L-Iduronidase Gene Mutations in 5 Iranian Families Suspected for Muller Syndrome (Mucopolysaccharidosis I)
M Salehi,R Salehi,B Nasr- Esfahani
Journal of Shahid Sadoughi University of Medical Sciences , 2007,
Abstract: Introduction: Mucopolysaccharidosis I (MPS-I) is an autosomal recessive lysosomal storage diseases, caused by α-L-iduronidase (IDUA) enzyme deficiency. The clinical manifestations of MPS-I patients are variable ranging from severe to mild, and therefore prediction of disease severity is difficult. From when IDUA gene has been cloned more than 109 distinct mutations have been identified in it and this number is increasing. This mutation analysis has provided some molecular explanations for the range of MPS-I phenotypes. The aim of this study was identification and molecular characterization of IDUA gene mutations in our subset of MPS I patients. Methods: The present study performed on 5 Iranian families, each with a suspected child for MPS-I. Initially by using enzyme activity assay, the Hurler syndrome was verified and then presence of L123R mutation was evaluated by PCR-SSCP. Finally by PCR amplification of all 14 exons of the gene, SSCP and sequencing the mutations underlying the disease were identified and characterized. Results: The detected mutations turned to be L123R (in 2 patients), W402X, P533R and G51D mutations in other 3 patients. Discussion: L123R mutation, which was reported for the first time from our centre, was also present in 2 of the patients of this study but other 3 mutations were not novel. From our results, as well others, it can be concluded that the range of mutations in IDUA gene differ in different geographical areas. This should be considered when designing mutation detection strategies for MPS-I.
Isolation of Brucella abortus Using PCR-RFLP Analysis
M Salehi,E Pishva,R Salehi,R Rahmani
Iranian Journal of Public Health , 2006,
Abstract: Brucella transmission and epidemiology depend on infecting species and biovar. Therefore, exact identification of the Brucella is important to design correct control and treatment strategies. In this study, we examined presence of other Brucellae in Isfahan. One hundred twenty Brucella isolates were collected and genomic DNA was extracted from them. omp2a fragment of all isolates were amplified using a pair of specific primers and the PCR products were electrophoresed and stained with EtBr. These PCR products were then restricted using PstI restriction endonuclease. The PCR products of all isolates had the same size of 1100bp. The banding pattern of PCR-RFLP for all of the isolates were similar to banding pattern of the Brucella melitensis biotype 1 except for 5 samples that demonstrated banding pattern similar to B. abortus. Based on our results, it is clear that biotype 1 of the B. melitensis is not the only Brucella present in Isfahan and now B. abortus is also present in our area. These results are very important in planning for the control of the disease as well epidemiology and even treatment of the patients.
Sliding Mode Impedance Control of Flexible Base Moving Manipulators Using Singular Perturbation Method
M. Salehi,G. R. Vossoughi
Lecture Notes in Engineering and Computer Science , 2007,
Abstract:
Vibration Control of Flexible Base Mobile Manipulators under Impedance Controller Using New Control Element On the End Effector
M. Salehi,G. R. Vossoughi
Lecture Notes in Engineering and Computer Science , 2007,
Abstract:
Duality, Time-asymmetry and the Condensation of Vacuum
H. Salehi,H. R. Sepangi
Physics , 1998, DOI: 10.1016/S0375-9601(98)00855-X
Abstract: A variant of the divergence theory for vacuum-condensation developed in a previous communication is analyzed from the viewpoint of a 'time' asymmetric law in vacuum. This law is found to establish a substantial distinction between dynamically allowed vacuum-configurations related by signature changing duality transformations.
A Measurement Framework for Directed Networks
Mostafa Salehi,Hamid R. Rabiee
Computer Science , 2014, DOI: 10.1109/JSAC.2013.130603
Abstract: Partially-observed network data collected by link-tracing based sampling methods is often being studied to obtain the characteristics of a large complex network. However, little attention has been paid to sampling from directed networks such as WWW and Peer-to-Peer networks. In this paper, we propose a novel two-step (sampling/estimation) framework to measure nodal characteristics which can be defined by an average target function in an arbitrary directed network. To this end, we propose a personalized PageRank-based algorithm to visit and sample nodes. This algorithm only uses already visited nodes as local information without any prior knowledge about the latent structure of the network. Moreover, we introduce a new estimator based on the approximate importance sampling to estimate average target functions. The proposed estimator utilizes calculated PageRank value of each sampled node as an approximation for the exact visiting probability. To the best of our knowledge, this is the first study on correcting the bias of a sampling method by re-weighting of measured values that considers the effect of approximation of visiting probabilities. Comprehensive theoretical and empirical analysis of the estimator demonstrate that it is asymptotically unbiased even in situations where stationary distribution of PageRank is poorly approximated.
The Effect of Psychological and Environmental Classrooms Factors on Learning in Quranic Centers and Language Schools
Meysam Karimi , Mohammad R. Salehi
International Journal of Nations Research , 2018, DOI: -
Abstract: Learning is the central section of each person's life. Even when we do not think so it also happens; with the thought that does not occur behavior in the vacuum; therefore, various ways of behavior, is related to the physical environment. Learning environments will be formed from elements that they are meaningful together. Features and qualities each of these elements are effective in shaping different behaviors. Education body is creating spaces related to student activity; spaces that are suitable conditions and desirable for mental physical growth, emotional and social children that realization is possible through the design of the spaces given the behavior patterns of children. Philosopher Jean Piaget, much emphasis on the ability of the child in understanding the world actively and believes that's the kids do not attract information passively but what that in the world around you they see they hear and feel then select and interpret. Education and consequently educational environments are responsible greatest effect and take the role on the mindset and civilization of societies. Psychology environmental researchers, by studying child behavior patterns in educational environments into effective cases such as school size, lighting and ... who have a major role in enhancing learning, have in the course of the article, will be paid look at them more precisely. The purpose of this article qualitatively to check Darlqarani educational environments and language institutions and evaluated its effect on learning.
A Pareto Front Approach to Bi-objective of Distillation Column Operation Using Genetic Algorithm
G. R. Salehi,A. Salehi,B. Ghorbani,M. Amidpour
Energy Science and Technology , 2012, DOI: 10.3968/j.est.1923847920120302.334
Abstract: In this paper, an exergy analysis approach is proposed for optimal design of distillation column by using Genetic algorithm. First, the simulation of a distillation column is performed by using the shortcut results and irreversibility in each tray is obtained. The area beneath the exergy loss profile is used as Irreversibility Index for exergy criteria. Then, two targets optimization algorithm (SA, Simulated Annealing) is used to maximize recovery and minimize irreversibility index in a column by six different variables (Feed Condition, Reflux Rate, Number of theoretical stage, Feed Trays (Feed Splitting, three variables)). SA uses one objective function for the purpose or alters two targets optimization to one target optimization. Then, GA optimization algorithm is used for two targets optimization except Pareto set which is used instead of objective function; finally, the results are compared with SA results. Then, one pump-around is considered to obtain better results (OPT2). Irreversibility index criterion is compared with exergetic efficiency, constant and variable feed composition splitters are considered. Key words: Exergy analysis; Irreversibility index; Genetic algorithm; Process optimization; Distillation column
Determine the Eigen Function of Schrodinger Equation with Non-Central Potential by Using NU Method  [PDF]
Hamdollah Salehi
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.28138
Abstract: So far, Schrodinger equation with central potential has been solved in different methods but solving this equation with non-central potentials is less dealt with. Solving such equations are way more difficult and complicated and a certain and limited number of non-central potentials can be solved. In this paper, we introduce one of the solvable kinds of such potentials and we will use NU method for solving Schrodinger equation and then by using this method we have calculated particular figures of its energy and function.
First Principles Studies on the Electronic Structure and Band Structure of Paraelectric SrTiO3 by Different Approximations  [PDF]
H. Salehi
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.29111
Abstract: The electronic structure, energy band structure, total density of states (DOS) and electronic density of perovskite SrTiO3 in the cubic phase are calculated by the using full potential-linearized augmented plane wave (FP-LAPW) method in the framework density functional theory (DFT) with the generalized gradient approximation (GGA) by WIEN2k package. The calculated band structure shows a direct band gap of 2.5 eV at the Γ point in the Brillouin zone.The total DOS is compared with experimental x-ray photoemission spectra. From the DOS analysis, as well as charge-density studies, I have conclude that the bonding between Sr and TiO2 is mainly ionic and that the TiO2 entities bond covalently.The calculated band structure and density of state of SrTiO3 are in good agreement with theoretical and experimental results.
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