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Showing 7 results for Salehpour


Volume 5, Issue 1 (3-2017)
Abstract

Pedological criterion affecting desertification in alluvial fans was investigated, for which the map of units was prepared by crossing maps of land use, geology, slope classes and grid layer created by the extension of ET Geo-Wizards in ArcGIS 10.3. Three indices of salinity, erodibility, and permeability of soil were considered and classified. Weights of criteria and consistency ratio were calculated by the AHP method and ELECTRE I method was used to prioritize the options. After creating the weighted super matrix and calculating the concordance and discordance matrix, the difference between dominance and defeat values were calculated. The results showed that the difference in values obtained from AHP-ELECTRE I technique varied from -15 to 16. The alluvial fans were classified into three classes of I, III, and IV from the viewpoint of pedological criterion affecting desertification by using AHP-ELECTRE I technique. Results showed that 71.99% of the area was in the low desertification potential, while 2.19% and 25.82% were in the high and very high desertification potential, respectively.

Volume 5, Issue 2 (9-2016)
Abstract

Protein compounds were extracted from the mucus of sea anemone, Stichodactyla haddoni, and their effects on the gills of rainbow trout, Oncorhynchus mykisswere examined. Sea anemone samples were collected from the intertidal zone of the eastern coast of Hormuz Islandand frozen samples were transported to the laboratory. Then the mucus was extracted using of the PBS solvent and doses of 5, 10 and 24 mg/dry weight of total protein was injected into the tail vein of the fish. Upon the inactivation of fish, histopathological changes were examined using of the classical histological method. Lethal signs were observed in the gills, including aneurysm, hypertrophy of epithelial cells, lamella clubbing and deformation, subepithelial edema, lamella congestion in the interlamellar region and necrosis. The damages were more serious with increasing doses. The results showed that protein compositions of the mucus can cause numerous lesions in the gill tissue of fish, which act as an excretory, respiratory and ionic regulation tissue, the failure of which can lead to failure of fish’s vital functions that can be one of the reasons for the death of the hunted fish.  The results showed that the protein compositions of mucus can cause numerous lesions in the gill tissue, as an excretory, respiratory and ionic regulation tissue lead to failure of it functions that itself can be one of the reasons hunted fish death.
Maasoume Abdollahi, Mojdeh Salehnia, Saghar Salehpour,
Volume 16, Issue 4 (2-2014)
Abstract

Objective: This study aimed to evaluate the incidence of apoptosis in vitrified and non-vitrified human ovarian tissue by the use of morphological analysis and apoptosis assay techniques. Methods: We obtained human ovarian tissue biopsies from 30 women who underwent elective caesarean sections. Tissues were transported to the laboratory in pre-warmed, equilibrated Leibovitz L-15 medium within 2 hours. The tissues were cut into small pieces and divided into two groups, vitrified and non-vitrified (control). Apoptosis incidence was assessed by light microscope and the TUNEL assay and DNA laddering. Evaluation of caspase 3/7 protein levels was performed by the luminescent assay. Results: We observed no morphological signs of apoptosis in the vitrified samples. There were no apoptosis signals as evidenced by TUNEL staining and no DNA laddering pattern observed in the vitrified group. Caspase 3/7 activity was 2294±169.19 RLU/µg protein in the non-vitrified control group and 2231±89.271 RLU/µg protein in the vitrified group, which was not significantly different. Conclusion: The structure of human vitrified ovarian tissue was well preserved. Vitrification could not increase apoptosis and caspase 3/7 activity in human ovarian tissue.

Volume 20, Issue 3 (Fall 2016)
Abstract

Nowadays, development is one of issues that have been important among geographers recently. Whereas public services stablish economic, social, cultural, physical and spatial form and nature of regions, thus inequity in their distribution and dispersion manner creates irreparable effect for regions structure and form, and appearance cause of types of development levels, and creates advantages for some regions. This reaearch aims analyzing development level of Alborz provinces counties. Thus, research method is comparative- analytical method, research type is practical, and data gathering is library way. Therefore Alborz counties have been categorized in having services aspect after nominating indicators (43 indicators) in 4 dimensions using TOPSIS, SAW, WASPAS, and Combinatorial (scores median) models, then plans priorities have been characterized according to public services dispersion for every county. Research findings show that Karaj, Sawojbolagh and Nazar Abad counties have the least development level, and Eshtehard and Taleghan have the highest development level (by scores 1 and 2) in  public services distribution aspect. Result of pearson correlation analysis shows that there is a logical relationship between population (as the most important factor in developing sercices) and sercices dispersion. Therefore, system of services distribution in Alborz province needs to create rational and harmonic relationship between population and services distribution.
 
 
 

Volume 23, Issue 4 (7-2021)
Abstract

 Awareness of watershed problems and their consequences based on causal models is a fundamental step in the implementation of integrated watershed management plans and achieving watershed health. In this study, the DPSIR framework was used to analyze watershed health and cause-effect relations among its components, as well as structuring information in the Chehel-Chay Watershed, Golestan Province, Iran. For this purpose, first, items of each component were identified by library studies and literature reviews, and also discussion with NGOs and members of the village council. The validity and reliability of the questionnaire were confirmed by, respectively, a group of experts and Cronbach's alpha method. The sample size of the watershed residents was calculated by Cochran's formula. Then, the items were prioritized using the Friedman test based on the Likert scale, from the viewpoints of 28 experts and 94 residents. The matrix of relations between the items of the main components and their prioritization was determined according to the perspective of both groups. The results showed that the compliance rate of common priorities among 40% of the top priorities was 73% for the component of Pressure, 60% for the components of State and Impact, and 58% for the component of Response. Also, the most important managerial responses were identified and prioritized. Due to the presence of various stakeholders, applying these responses in the framework of integrated watershed management is crucial to improve watershed health.

Volume 23, Issue 5 (9-2021)
Abstract

Peoplechr('39')s participation is an important strategy for successful watershed management. This study aimed to identify and prioritize the factors prevent people from participation based on local peoplechr('39')s and expertchr('39')s viewpoints in Vers watershed. These factors were identified and categorized using literature reviews and interviews with experts and local residents. The validity and reliability of the questionnaires were checked by experts and Cronbachchr('39')s alpha test respectively. The sample size was also calculated by the Cochran formula. Finally, the indicators and sub-indicators which preventing peoplechr('39')s participation were prioritized using the Fuzzy Analytical Hierarchy Process (FAHP) and Friedman test. The results indicated that the views of experts and local residents about the preventing factors are in some cases consistent and in others inconsistent. In general, managerial and economic indicators have a greater role in preventing people from participating than social and educational ones. Experts believe that the factors X13 (lack of timely and complete project budget allocation) and X2 (local disputes) have respectively the most and the least degree of importance. But local residents ranked X7 (lack of multipurpose projects) and X6 (weakness in teamwork) respectively as the most and the least important factors. These differences imply that in addition to the viewpoints of experts, policy-makers must also consider the views of stakeholders on the factors preventing their participation. These findings can be appropriate and practical for executive officials since, removing these participation barriers especially the high-priority ones will increase the stakeholders’ participation level.

Volume 26, Issue 3 (5-2024)
Abstract

In the Shahroud Watershed, there has been an increasing occurrence of landslides that have caused a lot of human and financial losses. Therefore, landslide susceptibility zonation is crucial for reducing landslide risk. The aim of this study was to compare the Landslide Susceptibility Maps (LSMs) of different methods. Therefore, thematic layers of the ten causal factors were prepared. Then, a landslide inventory map consisting of 104 landslides covering 1401 hectares was compiled and partitioned into two subsets including 70% for training and 30% for testing purposes. Three landslide susceptibility maps were prepared using the Frequency ratio (Fr), Statistical index (Si), and Analytic Hierarchy Process (AHP) methods. The validation process showed that the Si [Area Under the Curve (AUC)= 0.732] and Fr (AUC= 0.707) models presented a more valid LSM than AHP (AUC= 0.651) method. The Qs (Quality sum) index values also confirmed the results of the ROC (Receiver Operating Characteristic) curve such that the Qs index values of 1.71, 1.43, and 0.62 for, respectively, Fr, Si, and AHP models implied a more accurate LSMs of the Fr and Si models than the one from the AHP. The results of this study can be used as a basic step for landslide risk management in the study area.

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