Shahidchamran University of Ahvaz
Shahidchamran University of Ahvaz
Hamzeh S.,Shahidchamran University of Ahvaz |
Naseri A.A.,Shahidchamran University of Ahvaz |
AlaviPanah S.K.,University of Tehran |
Mojaradi B.,Iran University of Science and Technology |
And 2 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012
Soil salinity is a huge problem negatively affecting physiological and metabolic processes in plant life, ultimately diminishing growth and yield. An area with more than 70,000 ha sugarcane farming and its by-products are the major agricultural activities in the Khuzestan province, in the southwest of Iran. Therefore, mapping and identification of soil salinity is the most important issue to improve management of large scale crop production in this area. Besides labour intensive fieldwork, remote sensing is the most suitable technique to assess soil salinity for large areas. This study was carried out to investigate the capability of Hyperion spaceborne hyperspecteral data for mapping the salinity stress in the sugarcane fields and determine the best method to classify soil salinity into 3 classes (low, moderate and high salinity). For this purpose the capability of different classification methods like support Vector Machine (SVM), Spectral Angle Mapper (SAM), Minimum Distance (MD) and Maximum Likelihood (ML) in conjunction with different band combinations (all bands, principle component analysis (PCA), Vegetation Indices) as an input data was performed. Results indicated that best method for classification is SVM classifier when we use all bands or PCA(1-5) as an input data for classification with an overall accuracy and kappa coefficient of 78.7% and 0.68 respectively. Therefore, salinity stress can be classified in agricultural fields using Hyperion satellite imagery with good accuracy and salinity map can be very useful for management of agricultural activity and increase the crop production. © 2012 SPIE.
Pour A.G.,Islamic Azad University at Shoshtar |
Habibi A.,ShahidChamran University of Ahvaz |
Shafinia P.,ShahidChamran University of Ahvaz
Advances in Environmental Biology | Year: 2014
Background: Menstruating women is one of the most important happen in their lives & the age of this happening is one of the most important characteristics in early pregnancy, in the other hands, this characteristic is one of the healthy & determining index of their health & their adolescent health, which seems, included by intense exercises Objective: The aim of this research is study is surveying on the effects of taekwondo on the onset of menarche in the 15-17years old female athletes & non-athletes in the North area of Khuzestan. Based on the characteristics of society, the sample of athletes obtained by census & in non-athletes used by available methods, statistical sample included 200 persons (100 athletes & 100 non-athletes). After coordination & distribution of questionnaire, they will fill them & measured their high & weight. For analyzing the data was used deductive & descriptive methods & also statistical test of variance analyzing & dependent t-test in the P≤.005 meaningful level. Results: The mean of age onset of menarche (menstrual period) in female taekwondo players & non-athletes were 13.5 years old -/+ 0.94, 13.93 -/+ 0.65, 13.07 years old =/-0.99. So, the Taekwondo players menstruate, averagely about 0.86 years later than non athlete that these differences were significant (p=0.001). There is different significant relationship between the age of start taekwondo & the age onset of menarche (p=0.001, r=0.368). Conclusion: It means that Taekwondo players have started earlier, they arrive later menarche. © 2013 AENSI Publisher All rights reserved.
Eskandari M.,ShahidChamran University of Ahvaz |
Zarei-Hanzaki A.,University of TehranTehran |
Mohtadi-Bonab M.A.,University of Bonab |
Onuki Y.,Ibaraki University |
And 3 more authors.
Materials Science and Engineering A | Year: 2016
A newly developed, austenitic lightweight steel, containing a low-density element, Al, exhibits tensile elongation up to 50% as well as high ultimate-tensile stress (tensile fracture at 1800 MPa) without necking behavior. Electron backscatter diffraction analysis is carried out to investigate the orientation dependence of the martensitic transformation in tensile testing to 30% strain at 323 K (25 °C). A pronounced γ→ε→α′ transformation is observed in <111> and <110>∥TD (TD: tensile direction) γ-grains. The α′-transformation textures is analyzed. Large misorientation spreads is seen in the <100>∥TD γ-grains. Interestingly, twin-assisted martensitic transformation is detected in the <111>∥TD followed by the twin boundary directly moving to a γ/α′ phase boundary. These phenomena are related to a change of Schmid factor for different orientations of grains. © 2016 Elsevier B.V.
Baradaran M.,Ahvaz Jundishapur University of Medical Sciences |
Jalali A.,Ahvaz Jundishapur University of Medical Sciences |
Jolodar A.,ShahidChamran University of Ahvaz
African Journal of Biotechnology | Year: 2011
There are several reports concerning the intracellular bacteria, Wolbachia, which infect an extensive range of invertebrates and promote a diverse array of reproductive alteration which encourage infection spread among its host population. This study reports the identification of Wolbachia in the Iranian scorpion named Hemiscorpius lepturus (H. lepturus) collected from the southwestern province of Khuzestan using partial polymerase chain reaction (PCR) amplification of Wolbachia 16S rDNA gene. PCR product was directly sequenced and the alignment of the sequence with similar sequences in GenBank showed high similarity with 16S rDNA gene of Wolbachia endosymbiont of Drosophila melanogaster. © 2011 Academic Journals.
Zafar Jafarzadeh S.,Ferdowsi University of Mashhad |
Aminian M.,ShahidChamran University of Ahvaz |
Efati S.,Ferdowsi University of Mashhad
Proceedings of the 3rd International Conference on Computer and Knowledge Engineering, ICCKE 2013 | Year: 2013
In this paper, we introduce a set of new kernel functions Which is derived by combining generalized Chebyshev polynomials with other standard kernel functions. New kernel functions have significant advantages over classic support Vector Machine's (SVM) kernel functions and Chebyshev kernel. Simulation results illustrate the fact that the new set of kernel functions (in particular Chebyshev-Gaussian kernel) has noticeable improvement in decreasing error rate and support vector numbers. © 2013 IEEE.
Alibakhshi R.,Kermanshah University of Medical Sciences |
Moradi K.,ShahidChamran University of Ahvaz |
Mohebbi Z.,Tarbiat Modares University |
Ghadiri K.,Kermanshah University of Medical Sciences
Metabolic Brain Disease | Year: 2014
Phenylketonuria (PKU) is an autosomal recessive disorder characterized by a mutation in the phenylalanine hydroxylase (PAH) gene. Untreated PKU can lead to mental retardation, seizures, and other serious medical problems. This study was designed to investigate the status of molecular defects in the PAH gene and their association with polymorphisms in Kurdish patients with PKU in the Kermanshah province, western Iran. The study was conducted on 27 unrelated patients with PKU over a 2-year period (from 2010 to 2012). All 13 exons plus exon-intron boundaries of the PAH gene were analyzed and we identified 15 different mutations, including two novel mutations, in 51 of the 54 mutant alleles (diagnostic efficiency of 94.4 %). IVS4 + 1G > C (c.441 + 1G > C) and IVS7 - 5 T > C (c.843 - 5 T > C) are novel mutations that have not been reported in the academic literature or the PAH locus database ( http://www.pahdb.mcgill.ca ); therefore, they may be specific to the Kurdish population. IVS2 + 5G > C and IVS9 + 5G > A were the two most prevalent mutations in our sample, with frequencies of 26 % and 17 %, respectively. The second most common mutations were p.R261X, IVS10 - 11G > A, p.K363 > Nfs and IVS7 - 5 T > C, with each showing a relative frequency of 7.4 %. All other detected mutations, including p.F55 > Lfs, p.R176X, p.R243Q, p.V230I, p.R243X, p.R261Q, IVS8 - 7A > G and p.E390G had frequencies of less than 4 %. The present study showed that there is a distinct difference in the characteristics of PAH mutations between the Kermanshah province and other parts of Iran, suggesting that Kermanshah may have a unique population distribution of PAH gene mutations. Iran lies on the route of major ancient movements of the Caucasian people toward the Mediterranean basin, and Kermanshah has previously been called the gateway to Asia. Most of the mutations identified in this study are common in the Mediterranean region. Therefore, our findings are consistent with the historical and geographical links between the Iranian population and the populations of Mediterranean region. © 2013 Springer Science+Business Media.