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Recently the previous Caspian ecosystem is in a catastrophic condition which caused changes in the absolute and relative abundance of the commercially important Caspian kutum (Rutilus frisii kutum) in Iranian waters. The paper presents estimates of yield-per-recruit and spawning biomass-per-recruit under various harvest strategies of F_max, F_0.1, F_30%. It proposes a method for estimating acceptable biological catch (ABC) that accounts for large differences in the quality and quantity of information and available data. The current average Y/R (with F=0.61/y, and t_c=3.2 y) was 218.3 g per recruit, which indicates that the fishery is operating below the maximum Y/R at 236.9 g when t_c = 3.5 y. The Y/R was the highest at F_max and F_0.1, when t_c = 4 y (244.8 g and 214.2 g), respectively. The F_30% value was 0.85/y at t_c of 4 y with the SB/R of 338.3 g. The F_current (0.61/y at current t_c is 3.2 y) is higher than the corresponding reference points, F_0.1 (0.47/y) and F_30% (0.46/y). The ABC of kutum was estimated at 7,850 mt in 2009-2010.

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Methyl Tert-butyl Ether(MTBE) has been used as a booster in gasoline octane numbers in many countries, but after a short time due to the high absorption in water and the possibility of entry into groundwater, its use in developed countries is prohibited. In this work, for the first time, to reduce the adverse environmental effects, MTBE was encapsulated, and release control was considered. For this purpose, the inverse mini-emulsion polymerization of monomer methylmethacrylate(MMA) was performed in the presence of MTBE and in the cyclohexane medium by oil/water/oil. Poly methyl methacrylate/MTBE nanocapsules were synthesized in 0.5, 1, 2 ratios of MTBE to methyl methacrylate (R = MTBE / MMA).
The effect of changing R values ​​on conversion polymerization, on encapsulation efficiency of MTBE and on the morphology of capsules was investigated. For this purpose, TGA and TEM were used. Changing the R ratio from 0.5 to 2 allowed the capsule to be controlled in the range of 50-500 nm. The start of the MTBE degradation range of 130 ° C increased to 250 ° C due to the presence of the MTBE inside the capsule, and it was possible to start controlling the release of the nucleus by heating and starting at a temperature of 250 ° C. By addition of 1.5% of the capsules to the gasoline, the octane number increased by 5 units.
According to the results inverse mini-emulsion polymerization is a suitable method for encapsulating and reducing the environmental effects of MTBE by limiting its contact with the environment.
 

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Background: Low level Physical Activity (PA) among Chronic Low Back Pain for (CLBP) has been reported in many studies. The aim of this study was to predicting factors for physical activity behavior among CLBP patients referred to pain clinic in Yazd, Iran.
Methods and Materials: This cross sectional study was conducted on 182 eligible patients with CLBP who referred to pain clinic in Yazd, Iran from October to December 2016. A socio-demographic questionnaire as well as a 14-item researcher-made questionnaire regarding physical activity predictors based on Theory of Reasoned Action (TRA) were used to collect data. Data were inserted into SPSS v.23 and AMOS v. 23 and analyzed using descriptive/analytical tests including linear regression analysis.
Results: Totally 182 individuals with mean age of 42.18 ± 13.12 completed the study. The results showed behavioral beliefs and evaluation of behavioral outcome of PA were predictors of patients' attitudes towards PA (P < 0.001). Normative beliefs and motivation to comply were also predictors of subjective norm (P < 0.001). Subjective norm was predictor for intention to perform the PA behavior (P < 0.001) that in turn was predictor for PA behavior (P < 0.001). However, attitudes towards PA was not predictor for intention to do PA (P = 0.085).
Conclusion: This study showed the individuals who had positive beliefs and evaluation regarding outcomes of PA were more likely to do this behavior.

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Germination is a critical stage in the life cycle of plants and often controls population dynamics, with major practical implications. Salsola arbusculiformis is one of the most important plants used to prevent soil erosion and a good fodder resource for sheep and goat in the rangelands of Iran. However, the species seems to have low seed germination, so the purpose of this study was to investigate the effects of different treatments to improve its seed germination. Three concentrations of gibberellic acid (100, 500 and 1000 ppm), mechanical scarification with sandpaper, concentrated sulphuric acid (H₂SO₄ (98%)), potassium nitrate (KNO₃ (0.2%)), thiourea one Molar, four prechilling periods (10, 20, 30 and 150 days at 2 °C) were used as study treatments and distilled water as control. The results showed that there were significant differences (p<0.05) among and within the treatments in their effects on seed germination. The effective treatments to stimulate seed germination were prechilling for 150 and 30 days; sulphuric acid and sandpaper scarification. Prechilling for 150 and 30 days increased germination by 88.4% and 85.65%, respectively, while sulphuric acid and sandpaper scarification both increased germination by 76.1% compared to the control. The results also showed that gibberellic acid, potassium nitrate and thiourea did not promote seed germination. It was inferred that the most effective treatments among the methods used for breaking seed dormancy of Salsola arbusculiformis were prechilling for 150 days and mechanical scarification by hand with sandpaper.

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The purpose of the present research was to study the properties of natural habitats and growth status of the genus Tamarix in Miankangi, Sistan Province, South-eastern Iran. Selective sampling was used to examine the natural stands structure. Then, the one ha-rectangular sample plots were stablished in the stands and surrounding bare lands as control plots. Quantitative variables of stands viz. collar diameter, total height, canopy surface and density in the plots were recorded. In each plot, the soil sampling was carried out from 0-30 and 31-60 cm depths, and some physicochemical parameters of the soil including soil texture, pH, EC, SP, OC, total N, available P, K, Na, Ca and Mg were measured. Data were analyzed using one-way ANOVA. The Duncan's test was used to compare the means. The soil texture of the region was loamy-silty and clay-sandy-loamy. The soil of Tamarix habitats was saline and alkaline. The results showed that the growth variables were different among the habitats. In addition, the soil clay and silt, pH, potassium and sodium absorption ratio (SAR) were significantly different among the habitats and the control. Correlation between vegetation and soil properties also showed that the diameter of Tamarix trees had positively correlated with the soil SP at also the first depth and with the clay viriable at the second depth. 

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The present study was conducted to investigate the relationship between job burnout and spiritual intelligence. In terms of purpose the study is practical and in terms of data collection methods is survey and it is a descriptive research. The statistical population is consist of all employees at Tehran's Imam Khomeini Relief Committee who are 260 persons and number of sample is 80. The tool of data collection is questionnaire of spiritual intelligence and questionnaire of job. For analyzing the collected data following test were used: one sample T-test, tests of two sample means, analysis of variance and Pearson correlation test. Research findings showed, which indicates that there are a significant negative relationship between job burnout and spiritual intelligence. In other words, if the spiritual intelligence of employees increase, job burnout will be reduced.

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Background: Environmental stresses, especially salinity and drought, are effective on seed germination and growth.
Materials and Methods: After breaking seed dormancy by simultaneous use of leaching (48 hours) and gibberllic acid (1000 ppm), germination characteristics and seedling growth of Citrullus colocynthis from two ecotypes of Sistan-Baluchestan with six  levels of drought (0, -0.3, -0.6, -0.9, -1.2, -1.5 Mpa) and salinity (0, 50, 100, 150, 200, 250 mM) were studied. This experiment was carried out in two different factorial experiments using completely randomized design with four replications. Statistical analysis was performed using version 18 of SPSS software and Factorial analysis of variance (general linear model) and mean comparisons were done using Duncan's multiple range test. Results: The results demonstrated that there were significant differences among different levels of drought and salinity in all measured traits (P<0.01) and a significant decrease in seed germination and seedling growth were observed with increasing levels of drought and salinity (P<0.01). The results revealed that there were significant interactions effect between ecotype and different levels of drought as well as salinity (P<0.01), so seed vigor of Zabol’ ecotype was higher than that of Saravan.
Discussion and Conclusions: This species has acceptable germination at -0.6 Mpa droughts and 50 mM salinity. These issues must be considered in its intense planting in Sistan-Baluchestan province and using of Zabol’ ecotype seed is recommended.

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The present descriptive-analytic paper aims to investigate the distribution of the sentential negative marker in yes-no questions in Dashtestani dialect. As well as adhering to the beginning of the tensed main verbs and tensed auxiliary verbs in this dialect, the sentential negative marker is used immediately before the phrasal complements as well as the beginning of the negative yes-no questions. Relying on some theoretical and cross-linguistic pieces of evidence, the study examines the mechanisms beyond the optional behavior of this marker, together with its distribution in the hierarchy of the yes-no questions within the framework of the Minimalist Program. The findings of the study showed that the sentential negative marker is considered a ‘negative prefix’ in the position immediately preceding the tensed main verb as well as auxiliary verbs, and a ‘negative particle’ before the phrasal complements, each of them being generated in a different position. Consequently, in yes-no questions, the negative marker as a negative particle moves to the head of CP, satisfying, in this way, the Negative Criterion and yielding an interrogative interpretation. Lack of such a movement, on the contrary, renders the sentence ungrammatical.
 
 

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Comparative study of critical theories of contemporary Arab and Iranian poets can have a unique part in literary analysis. In general, new poetic critical theories are under the influence of the intellectual origins of contemporary German and French philosophies. Adonis and Shafiei Kadkani are two influential critic poets who have discussed poetic concepts and components in their critical articles and books with specific tact. The present study was a descriptive-analytical investigation into analyzing critical views of these two poets based on American school of comparative approach in the fields of definition of poetry, and language and music of poetry. The results of the study showed that the two critics have common intellectual foundations; therefore, they have some similar critical viewpoints. However, their critical approaches are different in terms of both methodology and intellectual depth. Compared to Shafiei Kadkani, Adonis has a deeper, more organized, and more daring view toward poetic categories and poetic language.

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Van Leeuwen's socio- semiotic network of social actors (2008), is a framework in Critical Discourse Analysis which helps discourse analysts discover how the social features ,settled in the underlying levels of discourses, are represented on the upper levels. This study tries to explore the way social actors are nominated and categorized in “Al” which is a story about the culture of nomadic people in Iran by Mohammad Bahmanbeigi, a famous Iranian novelist and the winner of the UNESCO’s literacy prize. By social actors we mean every single person that plays a role or occupies a specific position in a given society. Particularly, this study attempts to find answers to the following questions:
1. How does the writer use nomination and categorization to express his own viewpoints about the social actors of Nomadic societies of Iran?
2. Can these nominations and categorizations reflect the nomadic people's viewpoints about social actors at the time of nomadic people's illiteracy?
Adopting Van Leeuwen's model of representing social actors, a lot of researcher have tried to explore the social actors of different political and educational discourses but the innovation of this study is that it tries to change the direction of studies from political discourses to literary ones.  Another point is that most of the studies about the representation of social actors have relied mostly on the frequency of the socio- semantic features for their final discussion and results but this study has focused more on qualitative analysis than just counting the frequency of the socio- semiotic features. Although counting frequencies can reveal significant patterns, it is better not to make great claims for numbers. On the contrary, it is important to realize that frequencies often shift with the stages in the writer’s argument and may not be an overall characteristic of the text (vide. Van Leeuwen, 2008: 31).
 The results of this study show that the representation of social actors in “Al” is purposeful and serves to control the viewpoints of the society. The writer, using the advantages of nomination and categorization, expresses his viewpoints covertly and portrays the oppression of women in nomadic societies. On the one hand, the writer categorizes women generically to demonstrate them as the social actors engaged in common complications and on the other hand, he nominates women specifically and individually to picture them as distinguished and independent persons. Men's appraisements are all positive and represent the nomadic people's opinions about males but the appraisements of women, according to the social norms dominating the text, are changing. Using the advantages of deviation, the writer introduces the main character of the story as a deviant actor involved in opposite activities to challenge social norms and beliefs.

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Development of information technology has provided new capacities for higher educationand one of these capacities is "e-learning".As a result, the implementation of electronic learning systems (ELS) has become one of the most important investment trends in different countries.The successful implementation of these systems will be achieved when the readiness of the university is provided in terms of human, infrastructural and content dimensions.From the human perspective, establishing an effective interaction between instructor and learner has been identified as the key factor in the success of ELS.
This paper aims to assess the readiness of faculty members and students for using ELSs in academic environments; so, we first formulated various appropriate readiness assessment measures of e-learning readiness. Then we gathered readiness data from 8 Iranian comprehensive universities, through a survey. According to the average score and importance grade of each measure, we calculated the readiness level of faculty members and students in the selected universities for each measure.
The results indicated that the score of over 25% of the students’readiness measures and about 40% of the faculty members’ readiness measures were "less than medium", and both total average scores were "medium". These results confirm that the policy-makers and deans of universities should be aware of the ELSs benefits, the human resources' empowerment mechanisms, and the level of access of instructors and learners to the network facilities.

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Primary production is a key indicator in the evalution of aquatic ecosystems that can directly affect carbon sequestration. Due to climate change and environmental dynamics, this component has changed spatially and temporally in different ecosystems. Therefore, to understand and monitor these changes, the most important influential parameters include; sea surface temperature, chlorophyll-a and algal bloom on this component and their changes were analyzed based on the time series. Images related to Chl-a, SST and NPP from January 2003 to December 2018 were used by MODIS sensor and VGPM model to estimate NPP in the study area. Aftar pre-processing and extracting the time series algorithm, the trend of variation was determined using the mann-kendall and theil-sen procedure. Then, using enhancing false color composite, algal blooms in the Persian Gulf and the sea of Oman were identified and the amount of chl-a concentration in the algal bloom area and outside the area was determined.  The results of trend analysis with theil-sen procedure showed that the rate of change for chl-a is decreasing in all regions except the fifth region. The highest amount was observed in the fifth region (-0.19), which corresponded to the rate of NPP. The results also show that the highest amount of NPP in the first region in March and the lowest in June and July (540 and 690 gC/m²/day), which corresponds to the amount of chl-a concentration. Despite the apparent correlation, there is no cause-and-effect relationship between SST and chl-a as well as chl-a and NPP. In this way, factors other than chl-a can be considered for algal bloom and NPP.

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Humans way of life is placing an increasing burden on the planet. We are damaging the natural environment and imposing on the nature for excess of needs dictated by ecological and biological dimensions. This implies, damaging the life of the next generations and negating the principles of sustainable development. Humans detrimental behavior is based on principles of growth paradigm , in which , human comsumption patterns have negative effects on the environment . The current model of development is unsustainable and can not secure the future of human beings on the planet. This article identifies similarities and differences of the paradigms of growth and sustainability. The main contribution of the article is to develop a new conceptual framework for sustainable development by including political parameter as an extra dimension and presenting two conceptual frameworks : 1) for humans and eco-systems wellbeing and 2) for the process of change.

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Introduction: Fish consumption is increasing due to the global population growth. Therefore, taking advantage of new methods such as marine aquaculture can be a reliable source for the production of fish in the world. The purpose of this study is the spatial analysis of marine aquaculture farms in the coasts of Mazandaran province.
Materials and methods: In this study, three categories of criteria (water quality, economic-social and physical-environmental) were considered for spatial analysis of aquaculture farms in the coasts of Mazandaran, which are based on the Geographic Information System (GIS) and hierarchical analysis process (AHP), is used according to the definition of the decision law, and at the end, the existing aquaculture farms (9 farms) are analyzed using the Extract function.
Results and discussion: The results show that the location of the present farms can be transferred to more favorable areas with less risk. Among the existing farms, farms 1 and 2, located on the coasts of Joibar and Babolsar, have the most suitable condition and the highest amount of desirability. Also, the results of weighting between the three groups of water quality parameters show physical and socio-economic; Due to the importance of temperature, turbidity and chlorophyll criteria in marine aquaculture, water quality group has more weight than other groups (0.4034) and then the group of physical factors (0.3808) than social factors. (0.2168) more weight is given.
Conclusion: The findings of this study show the ability of GIS as well as satellite imagery to locate and evaluate marine aquaculture.

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Aim: Temperature is one of the factors that can affect the survival of sea turtle hatchlings and nest success. As a critically endangered species, Hawksbill sea turtle nests in several Iranian islands. Few studies have so far been conducted on the effect of temperature on nesting success of this species in the Persian Gulf. The objective of this study is to investigate the effects of temperature on the survival of turtle hatchlings in two nesting areas.
Methods: The temperature of the sand and the nest was recorded and analyzed using thermochron data loggers for several consecutive years from 2019 to 2021, from the beginning of the nesting season until the emergence of hatchlings. The three criteria of incubation success, mortality, and emergence success were chosen as indicators to evaluate nest success.
Findings: The lowest average annual sand temperature was related to Kish Island. The annual average temperature of the nests in Kish and Qeshm Islands showed a significant difference. The Kish nests were at a level higher than the thermal tolerance threshold (33 to 35°C) for less than five days. Examining the success of the nests showed that Kish has a higher than average hatching success than Qeshm, but this result does not hold true for the other two criteria.
Conclusion: Although checking the temperature of the sand and the nest can provide us with useful information regarding the survival of the turtle hatchlings and the implementation of protection decisions, investigating other factors besides temperature can be helpful as well.
 

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This essay denotes the context for observation of cultural behavior of the sixth decade according to cultural formation and discourse analysis of this decade, those groups into the same historical era who have the same experience from the particular social occurrence - the WAR and holy defense. In this analysis of generation dependencies, theories, judgments and common values are studied about stable phenomenon, common meanings which is in the field of experience from the hidden generation, and transfer in this decade narrative stories. In this present essay to understand the interrelation of generations for narrative authors, we assist two terms: 1. the qualification that bring social sources and areas for this changes, and 2- the qualifications that come to form the content and ideological setting, and shows that traditional revolutionary ideological discourse creates a vast array of new ideas through the production processes, selection, and institutionalization which in significant way deployed the ideology of official and cultural deep-seated institutions. This discourse is a function of cultural formulations of sixth decade that is created in order to the crisis in moral system, resources mobilization, and the formation of chains of interaction among the cultural elites. In this cultural context, narrative authors advocated dominant discourse with their new ideas and provoked the answers of the other actors in the present social environment. The Cycle of “idea- answer- idea” is one of the methods and mechanisms of action that acts through the chains of action with formation of repeated dominant discourse. In this way, social experiences of the authors in this period, are as same as the ideological elements with positive and negative elements were recorded and written.

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Assessment of Evapo-Transpiration (ET) in the cases such as Irrigation programming, water basin evaporation determination, water balance calculation, water runoff estimation and climatological studies are important. It is possible to determine ET by field measurements. However these methods only can determine ET for the regions with the limited areas. This limitation has made the use of remote sensing techniques reliable for assessment of ET in a vast area. In this work, the amount of ET has been evaluated in an army wheat field located in the Golestan Province (North of the Iran) for May 5th and June 7th, 2003 using MODIS images. Surface albedo affects in the outcome of SEBAL that we estimate it using two methods, one using 1 and 2 bands of MODIS image (old method) and the other using 1 to 5 and 7 bands of MODIS image (new method). The comparison of the results of SEBAL to the results of other works showed the accuracy of the estimation of surface albedo using the new method is better than the old method. Also, the accuracy of SEBAL outcomes are relatively satisfactory and can be improved by further detailed studies.