فهرست مطالب jafari

The Persian Gulf has created a kind of security interdependence between countries and regional players. The Persian Gulf is one of the most important regions in the world from a geostrategic and geoeconomic point of view, which can be considered as a regional security complex. In the sense that various factors have created a kind of security interdependence between countries and regional actors. Therefore, this research seeks to achieve a practical goal through the study of different theories of common security and security in Islam and the approach of culture in the Persian Gulf. Since the work of policymaking is to organize affairs and security policymaking is considered as a vital and basic necessity for governments, this research after examining the approaches, authorities and drivers of security policymaking in the Persian Gulf region aims to provide a security model based on common security. , security in Islam and the approach of culture in order to transition from national security to human security in this region, which is carried out quantitatively on experts, managers, experts, activists in the field of security in 1401.
This research aims to present a security model based on common security and a strategic culture approach in order to transition from national security to human security in the region, which was conducted quantitatively on experts, managers, experts and activists in the field of security in 1401. The research question is, what is the relationship between Iran's strategies and the approach of strategic culture and common security in the Persian Gulf? This research was conducted based on quantitative and qualitative research methods and descriptive analysis of correlation method; In this way, the research was conducted using questionnaires and interviews about the regional security system. In this research, the structural equation model (SEM) was used to develop the model. The findings of the study showed that common security has an effect on the realization pattern of Persian Gulf security. The path coefficient between two variables is 0.42, which has a significance level of 25.36, which is desirable because it is greater than 1.96, so the existence of a significant effect is confirmed. Also, the study showed that the theory of strategic culture approach has an effect on the realization pattern of Persian Gulf security. The path coefficient between the two variables is 0.68, which has a significance level of 16.745, which is desirable because it is greater than 1.96, so the existence of a significant effect is confirmed.
Since the goal of providing a security model with an emphasis on the common is security in Islam and culture, it is practical in terms of its purpose and descriptive and analytical in terms of its approach, and its results are clear and objective, and its results are in meeting needs and solving problems. and its application in solving specific problems in the organization, society, etc. is. It is also small in terms of information gathering. According to the type of study, the statistical population of the research includes experts, managers, experts, activists in the field of security in 1401. The number of these people was estimated to be about 500 people. Based on Morgan's table, for a community of 500 people, the number of samples is 217 people, which was carried out on 217 people in this study. The current research is a survey data collection method, which means that the present study is a descriptive survey and is discussed and investigated by reviewing scientific sources and theories in the field of research and comparing them, conducting an interview and designing a researcher-made questionnaire based on the results of the interview. In order to collect and analyze the data and information required for this research, various methods and tools have been used, which are described below according to the different needs of the research model. To collect information related to theoretical foundations, library research and study of various books and articles and scientific sites have been used. The main tool for collecting information in this research is a questionnaire, and a researcher-made questionnaire based on theoretical principles will be used to develop the questionnaire, so that the components extracted from the interviews will be evaluated, and the answers will be designed as a five-item Likert scale. In this research, the structural equation model (SEM) was used to develop the model.
The findings showed that there is a significant relationship between common security and the security of the Persian Gulf. The path coefficient of this relationship was found to be 0.717. To evaluate the significance of this effect, one should refer to the significant number of t-Value, which is 2.269, which is more than 1.96, and also the P-Value is 0.000. The findings also showed that there is a significant relationship between the approach of strategic culture and the security of the Persian Gulf. The path coefficient of this relationship was found to be 0.68. To evaluate the significance of this effect, one should refer to the significant number of t-Value, which is 2.949, which is more than 1.96, and P-Value is 0.022. Also, there is a significant connection between security in Islam and the security of the Persian Gulf. The path coefficient of this relationship was 0.529. To evaluate the significance of this effect, one should refer to the significant number of t-Value, which is 2.456, which is more than 1.96, and the P-Value is 0.000. Therefore, the desired hypothesis is confirmed at the 95% confidence level and there is a significant relationship between security in Islam and the security of the Persian Gulf.
There is a significant relationship between common security, security in Islam, the approach of strategic culture and the security of the Persian Gulf.

The effect of chick initial body weight and dietary nutrients density on growth performance and immune response were investigated using 360 Ross 308 one-day-old straight run chicks (mixed sex) in a completely randomized design with 2×3 factorial arrangement of treatments, four replicates and 15 birds per replicate. The initial body weight of chicks was grouped as 42±1 g (standard weight); 38±1 g (light weight; 10% under standard weight); 46±1 g (heavy weight; 10% over standard weight) while the nutrients density of the diet was either 5% lower than the nutritional recommendation of Ross 308 (typical commercial diet in Iran), or as recommended by Ross 308 manual (high-density diet). Chickens fed the high-density diet had higher daily weight gain and lower conversion ratio than chickens fed the typical diets (P<0.05). The effect of dietary density and initial body weight of chicks on carcass components and weight of internal organs were not significant except for heart. Broilers fed the high-density diet and heavy weight had higher antibody titers to sheep red blood cell (P<0.05). Light chicks fed the high-density diets had greater total anti sheep red blood cell and immunoglobulin G titers than light chicks fed the typical diets (P<0.05). Results indicate that feeding light chicks with high-density diets increases their growth rate compared to the chicks with standard or heavy weights. Moreover, feeding diets with a high density of nutrients to light chicks can improve immune responses.

In the present study, the combination of concentration lattice Boltzmann method with a smoothed profile method was used to simulate the dissolution of solid circular particles between parallel plates that are moving in opposite directions. The hydrodynamic simulation was performed based on the single relaxation time lattice Boltzmann method and the convection-diffusion equation was used to determine the concentration of the solute in the liquid phase. Additionally, the smoothed profile method was used to calculate the no-slip boundary condition at the liquid-solid interface and concentration forces. To evaluate the accuracy of the proposed model, the simulation results were compared with the empirical data in the literature. The difference between the simulation results and the empirical data for the Sherwood number at different Peclet numbers was less than 2%. The results show that the smallest dissolution time in systems with different volume fractions is in a system with the least volume fraction. As the volume fraction increases, the solid-liquid mass transfer driving force is decreased in the system. The simulation results showed that by increasing the Reynolds number from 0.05 to 0.38, the time required to reach the normalized volume fraction to 0.05 of its initial value reduced from 0.36 s to 0.17 s. Also, by increasing the Peclet number from 5.5 to 115, the Sherwood number increased from 1.74 to 4.06. In addition, the increase in the Schmidt number in the system leads to a slower dissolution time. Finally, the polydispersity in the system was studied.

The purpose of this study was to examine the female-headed household empowerment based on social-cognitive career counseling and its impact on promoting their career self-efficacy and future orientation (time perspective, anticipation of future consequences, planning ahead). This quasi-experimental research had a pretest-posttest control group follow-up design. The statistical population of the study was comprised of female-headed households in Karaj supported by Imam Khomeini’s Relief Foundation. Forty female-headed households were selected through random simple sampling method and were assigned to experimental and control groups. The instruments included the Career Decision Self-Efficacy scale (CDSES, Taylor & Betz, 1983) and the Future Orientation Scale (Steinberg et al., 2009). The experimental group went through a ten-session course on social-cognitive career counseling and the control group did not receive any intervention.  At the end of the intervention, career self-efficacy and future orientation were measured during posttest and follow-up phases and the data were analyzed via repeated measures ANOVA. Results indicated that the level of career self-efficacy and the future orientation of the participants in the empowerment training course was significantly higher than that of the control group (P<0.01). These changes were also observed in the follow-up stage. Accordingly, it is suggested that empowerment based on social-cognitive career counseling be used as an optimal psycho-educational package for promoting career self-efficacy and future orientation among female-headed households.

The non-abelian tensor product of groups which has its origins in algebraic K-theory as well as inhomotopy theory, was introduced by Brown and Loday in 1987. Group theoretical aspects of non-abelian tensor products have been studied extensively. In particular, some studies focused on the relationship between the exponent of a group and exponent of its tensor square. On the other hand, computation of c-fold tensor products is generally a difficult problem. Several authors have given upper bounds for the order of G, when G is a finite p-group. In this paper we determine a bound for the exponent triple tensor product which sharpens a bound of G. Ellis.Let G be a nilpotent group of nilpotency class k≥3 and prime power exponent P^e (where p is a prime and is not equal 3). In this paper, we show that the exponent of triple tensor product of G, that is, (G⨂G)⨂G, divides P^([k/2]-1)e where [k/2] denotes the smallest integer n such that n≥k/2. In this way, the exponent provided by Ellis is improved.

Nitrogen is one of the most important nutrients and plays a major role in crop yield improvement. Currently, under the global pressure to increase grain yield while simultaneously minimizing environmental risks, the nitrogen use efficiency has become a challenging issue. Corn (Zea mays L.) nitrogen use is of continued interest due to agronomic performance and environmental issues. Nitrogen use efficiency (NUE), nitrogen uptake efficiency (NUpE) and nitrogen utilization efficiency (NUtE) are the main indices normally used to investigate the nitrogen efficiency of plants. However, nitrogen harvest index (NHI) and nitrogen partial factor productivity are also issues of importance. The aim of the present study was to evaluate all these indices for corn cultivars released in Iran during the last 40 years to find the trend changes during the course of their release.

In order to evaluate the trend of changes of nitrogen use efficiency for corn cultivars during the course of their release an experiment was conducted in growing season of 2014- 2015 in the experiment farm of Faculty of Agriculture, Ferdowsi University of Mashhad, Iran. The experiment was based on split plot with complete randomized block design (CRBD). Treatments included eight different levels of nitrogen (nitrogen applied from urea source (46%) N: 0, 100, 200 and 300 kg N ha-1, animal manure: 0, 10, 20 and 30 ton ha-1 corresponding to 0, 100, 200 and 300 kg N ha-1 respectively). Nitrogen fertilizer was allocated to the main plots and six cultivars of corn, (704 and 647 released as very old cultivars, 500 as an old cultivars and 705, 706 and 260 as new ones were allocated to sub plots. Sub plots were 2.25×3 m with three replications.

Results showed that grain, stover and biological yields, harvest index, nitrogen use efficiency, nitrogen uptake efficiency and nitrogen utilization efficiency were affected significantly by cultivars and fertilizer levels. Maximum and minimum stover yield was obtained with 704 (very old hybrid) and 260 (new hybrid), respectively. In contrast with these results, showed that the new cultivars have significantly higher yield than old corn cultivars. Although corn cultivars had significant effects on nitrogen harvest index, this was not affected by fertilizer levels and types. With increasing in nitrogen and manure fertilizer levels, grain and biological yields increased significantly. Although in most fertilizer levels maximum grain yields were observed in the 704 cultivar, but with increase in nitrogen amount from 0 to 300 kg, the most grain yield increases were obtained 117 and 103% in the 500 and 705 cultivars, respectively. On the other hand, in compared to manure fertilizer, nitrogen increased almost yield traits, so that, with exception of 500 and 647 cultivars, in other cultivars manure fertilizer decreased nitrogen use efficiency in compared to equal nitrogen fertilizer significantly. Maximum and minimum nitrogen use efficiency and nitrogen harvest index were obtained with 260 and 704 cultivars. However, two mentioned cultivars showed significant differences, while other cultivars had no significant differences. When different levels of manure fertilizer were applied, statistically similar effects were obtained on corn yield and nitrogen efficiency indices, as compared to equal levels of nitrogen fertilizer. With evaluation of different corn hybrids and nitrogen fertilizer levels reported a negative linear correlation between nitrogen use efficiency and nitrogen levels. With increasing nitrogen fertilizer levels, nitrogen use and utilization efficiencies and partial factor productivity of nitrogen decreased significantly, but with increasing manure levels this trend was observed only for nitrogen use efficiency and partial factor productivity of nitrogen.

In general, no consistent trends were observed between new and old hybrids and also between nitrogen fertilizer levels and types in terms of nitrogen efficiency indices. Furthermore, yield characteristics responses of corn cultivars to fertilizer levels and types had no significant trends. According to these results, it could not be state certainly that in the last four decades, corn cultivars breeding in Iran leading to improved nitrogen efficiency indices and therefore efficient use of fertilizers.

Trachyspermum ammi (L.) Sprague or commonly Ajwain is an herbaceous herb belonging to the family Apiaceae and vastly grows in Egypt, Iran, Pakistan, Afghanistan, and India as well as European regions. Known as Zenyan or Nankhah in medical and pharmaceutical manuscript of medieval Persia, seeds of Ajwain were highly used by traditional healers for different ailments. Due to its various chemical constituents, the herb seeds were also evaluated for its numerous pharmacological properties. Moreover, numbers of chemical constituents have been reported for the herb. In addition, fiber (11.9%), carbohydrates (24.6%), tannins, glycosides, moisture (8.9%), protein (17.1%), fat (21.1%), saponins, flavones and other components (7.1%) involving calcium, phosphorous, iron, cobalt, copper, iodine, manganese, thiamine, riboflavin and nicotinic acid are of reported phytochemical constituents of Ajwain. Other studies showed that there was a difference among investigated ecotypes of Ajwain for following characters including plant height, number of branches, number of umbels, number of umbellets in an inflorescence, biological yield, single plant yield, and for number of secondary branches and oil content at 5% probability level. According to high correlation analysis between grain and oil yields, breeding for these two traits can be consistent in Iranian ecotypes of Ajwain. Oil contents percentage in ecotypes from south and center were more than other parts of Iran.

This study was carried out at Research Station of the Agricultural Research and Education Center of Khorasan Razavi, Iran during 2012-2013 crop years. In this experiment, 27 genotypes of Ajwain from different parts of the country were collected by the Natural Resources Genes Bank of Iran. Gene banks is a source for the right seed and look into several issues in order to improve levels of germplasm distribution and its utilization, duplication of plant identity, and access to database, for pre-breeding activities. In order to evaluate the morphological and phenological traits and to measure essential oil percentage, yield and yield components of Trachyspermum ammi for achieving superior germplasm. It was conducted in a randomized complete block design with three replications. Seed samples were first cultivated in the greenhouse and then transferred to the field and cultivated in drip irrigation conditions. Both fresh and dry weights were collected and measured for each sample. Seed size, yield components, biomass and grain yield as well as essential oil percentage were measured in all the cultured germplasm. All phenological stages including stem elongation time, flowering time and seeding time were counted and recorded during the growth period.

In this research, analysis of variance showed that there is a significant difference at 5% probability level between genotypes for a number of traits in different groups for 50% flowering time in 1.5 months, plant biomass 72-245 g.plant-1, seed yield 38-61.3 g.plant-1, and essential oil 3.08-11.22%. The highest positive direct effect (39%) on the yield of Ajwain essential oil was observed on biomass trait which has a positive and high correlation (53%) with the number of days to maturity. Different accessions of Ajwain have a potentially important source of genetic variation for the improvement of the cultivated species.  Genetic and environmental conditions play a significant and interrelated role on the emergence of traits. The selection of these traits is influenced by genotype and phenotype. High levels of genetic advance represent an incremental gene activity, while low levels represent the non-additive activity of the gene. The knowledge of genetic variability in a given crop species for characters under improvement is important in any plant breeding program. Understanding the nature and magnitude of variability among Ajwain genotypes for traits of economic importance is the goal of this study and it is vital to plan effective breeding programs.

As plant biomass has the highest positive direct effect on the yield of ajwain essential oil and a high correlation (53%) with the number of days to maturity, the selection of these traits should be considered with greater attention and emphasis on breeding programs. They were determined as suitable criteria and characters in plant breeding to produce the best of ajwain genotypes.

There are many factors affecting the tolerance values of instrumentally measured color differences, including variety of industries, type of products to be matched with the original samples, the need of customers, etc. Regarding the insufficiency of various color difference formulae to deal with the acceptability of color matching of reproduced samples with the target, some researchers tried to present an instrumental color tolerance limit in accordance with the results of visual assessment experiments. Considering the specific colorimetric attributes of achromatic samples (with low lightness and chroma values), it was tried to set an instrumental tolerance limit based on the measured and visually perceived color differences between 20 filament black yarns and the reference one. The results showed that determining the color tolerance value based on various color difference formulae, i.e. ΔEa*b*, CIE94, CIE2000 and CMC (2:1), results in different instrumental wrong decisions, while the ΔE*ab color difference equation with the color tolerance value of 0.5 for filament black yarns showed the minimum number of wrong decisions.

Soil moisture is one of the most important factors that can affect productivity in ecosystems in arid and semiarid regions. The aim of this study was to investigate soil moisture and vegetation changes in the Isfahan province at the seasonal scale. For this purpose, MODIS Land Surface Temperature (LST) and NDVI data were used to calculate the TVDI index, and the rate of soil moisture content was also measured at several soil depths including 5, 10, 20, 30 cm. in the growing season. Seasonal changes of LST and NDVI indices were also studied in different climate regions ranging from humid to hyperarid. The results showed that the changes in NDVI and LST in this region were different, depending on the climate type and soil conditions; the LST and its changes mostly depended on the amount of vegetation cover NDVI changes based on the plant phenology in humid regions, which was were greater than that in arid and semi-arid climates. Soil moisture monitoring indicated that the relationships between TDVI and different soil depths varied based on the seasonal conditions. In the early growing season, the soil moisture at the depth of 0-5 cm had a higher correlation with TVDI, but in the middle of growing season, the deeper soil moisture (10-30 cm) showed the highest correlation. Therefore, the findings of this research indicated the importance of the growing season, soil conditions and vegetation percentage and types in the soil moisture studies by using satellite data.

The purpose of the present study was to determine the effectiveness of counseling based on Lazarus Multimodal Theory on possible selves, locus of control and decrease of opiate craving in addicts under pharmochotherapy.

A quasi-experimental design with pre-test, post-test and a two months follow- up with control group was used. The statistical population included 83 addicted men aged 20 to 45 years old under pharmochotherapy in addiction quitting center of Yaran in region 18 of Tehran in Iran. Through purposeful sampling method, 30 participants who met the inclusion criteria were selected and randomly assigned to two groups of CBLMT or control, n1=n2=15. Research tools were Rogers’s self concept questionnaire 1951, Rotter’s locus of control questionnaire 1966, Franken, Hendricks, Stan & Van den Brink’s opiate craving questionnaire (2002) which were administered in three stages for two groups and Counseling based on Lazarus Multimodal Theory (2008) to the experimental group during eight weekly, 90- minute sessions and data were analyzed using mixed model repeated measures analysis variance.

Finding showed that CBLMT had a significant effect on possible selves (F=36.51, P= 0.001), locus of control (F= 41.28, P= 0.001) and decrease opiate craving (F= 40.68, P= 0.001), and this effect remained stable at follow- up.

Since counseling based on Lazarus Multimodal Theory likely leads to change cognitions process and content and promote cognitive, affective and behavioral skills, effect on possible selves, locus of control and decrease of opiate craving. Hence, it can be used as a low- cost and effective counseling method for improving addicts under pharmacotherapy.

Wheat bran is a concentrated source of diatery fibre, protein, minerals, unsaturated fatty acids and vitamins. Existence of some technological and nutritional difficulties containing high amount of phytic acid and unappropriate sensory characteristics has coused limitation of its application in food formulation. In this study the effect of formulation and extrusion conditions containing feed moisture content, tempreture and screw speed were evaluated on chemical, functional and nutitional properties of texturized wheat bran.

In order to improve the nutriotional and technological properties of wheat bran, the effects of different concentration of feed moisture content (18, 21 and 25%), tempreture (120, 160 and 200°C) and screw speed (170, 235 and 300 rpm) were examined on functional charactristics (water adsorbtion index; WAI, soluability index; SI and oil adsorbtion index; OAI, soluble and insoluble fiber), and the nutritional values (phytic acid) of processed wheat bran.

Based on results the maximum and minimum level of WAI and SI were obtained at 25% moisture content, 120°C and 170 rpm. However the maximum level of SI and OAI were demonstrated at 18% moisture content, 200°C and 300 rpm. The least Phytic acid content (3.09 mg/100g) was shown in 21% moisture content, 120°C and 300 rpm. Extrusion process had significant effect on enhancement of soluble fiber fraction (55%) and decreased the insoluble fiber (6%).

The results indicated that, optimized condition of processing method could enhance the quality of processed wheat bran.

Casing collapse is major problem of the oil fields which causes increase of costs to oil companies. This problem can be seen not only at drilling time in some formations but also after the completion and production may cause problems. exact prediction of collapse pressure is a very important factor in the casing design. Casing Collapse generaliy is a function of the geomechanical properties of the formation and the properties of the solid mechanics of the casing. One of the properties of solid mechanics that affects the testing of the collapse can be the ovality of the casing and the difference in the thickness of the casing and the existence of residual stress during the construction of the casing. In this paper, using numerical methods, the effect of each of the above-mentioned solid mechanics parameters and formation creep on the collapse of the casing  has been investigated. The results of this study indicate that pipe defects, such as casing ovality, eccentricity and the presence of residual stress, reduce the strength of the casing.
This reduces the resistance to the extent that the casing at the time of installation due to high plastic strain will collapse and also it was found that the pipe imperfections is more effective than rock salt creep in casing collapse.

The aim of this study was the effect of raw water quality on the efficiency of domestic reverse osmosis apparatus in Khuzestan province. The results showed that the purified water quality was related to the quality of entrance raw water. With increasing in salt concentrations (EC) or TDS, purification efficiency was decreased. The cation and anions content of refinery water was related to TDS and EC. The Ca/Na and Mg/Na were decreased due to refinery. The ability of these apparatus to reduction of two valence cations were more than mono valence. As same as this trend was observed for anions. Also, the comparison of the EC of raw water and refinery from these apparatuses had different EC from different raw water entrance. This means of these apparatuses had different efficiency with changes of raw water quality. Generally, domestic water purification systems have better performance in Karun river water treatment than in Kheiryrabad and Karkheh rivers.

Spread extrusion is a capable method to produce different samples with a wider cross-section from the smaller billets in a single processing pass. In this study, dish-shaped samples are successfully produced from the as-cast cylindrical AM60 magnesium alloy at 300 °C, the mechanical properties and microstructural changes of the final specimens are precisely evaluated. Due to the high amount of plastic strain, which is applied to the initial billet during the material flow in the expansion process, grain refinement occurred as a result of recrystallization and subsequently good mechanical properties achieved. Therefore, mean grain size reduced from 160 µm to 14 µm and initial equiaxed grains changed to the elongated ones surrounded by fine grains. Also, microhardness measurements indicate that hardness increased from 51 Hv to 70 Hv. Some fluctuations were also observed in the hardness profile of the sample which was mainly related to the bimodal structure of the final microstructure. Good mechanical properties, fine microstructure, and also the ability to produce samples with higher cross-section make the spread extrusion process a promising type of extrusion.

The study area (Pasghaleh) is located North of Tehran and is part of the Central Alborz Mountain Range. Pasghaleh deposit between coordinates 51º 25´15 ̎ up to 51º 25´ 54̎ Eastern longitude and 35º 49´42 ̎ up to 35º 50´15 ̎  Northern latitude in North of Tehran, in the geological sheet with a scale of 1:100000 Tehran and is located East of the Pasghaleh village. Intrusive bodies in this area with age after the Eocene in penetrating Eocene volcanic and pyroclastic units and have altered these units. For mapping minerals and explore the alteration patterns together with Polymetal mineralization in the metallogenic zone Pasghaleh, for sine satellite ASTER and ETM spectral processing and interpretation. According to remote sensing data, it leads to the appearance of Kaolinite and Montmorillonite minerals (Argillic alteration index), Chlorite, Epidote and Calcite (Propylitic alteration index), Muscovite (Sericite alteration index) and Gossan in the range studied. Major mineralization in the region in acid Tuffs altered and scattered. The lithology of this region including pyroclastic rocks of Karaj Formation with Eocene age. Sulfuric minerals observed Pyrite, Chalcopyrite, Sphalerite and Galena. In the whole region Pyrite expands but Lead mineralization, Zinc, Copper, Gold and Silver which process is parallel to the general layering of classes Tuff Silica altered- Feldspathic- Pyrite slightly observed. Pyrite form syngenetic among the Tuffs.Tuffs in formation stage and in the stage of diagenesis, the alteration process Sericitic, Kaolinite and or Chlorite have tolerated. In terms of construction, altered zone mineralize Pasghaleh as a lens and layers plate form between rock units Dacite, Rhyodacite are formed. Based on the study of remote sensing data, presence of alterations Sericite, Argillic and Propylitic (the presence of Chlorite and Epidote) proven in the region, consequently by putting together these alterations to one another, it can be attributed to the alteration pattern of Kuroko Massive sulfide deposits.

In this paper, the modal analysis of a grid connected doubly-fed induction generator (DFIG) using small signal stability analysis is presented and effect of variation in system parameters such as mutual inductance, stator resistance, line reactance, shaft stiffness and wind speed on the eigenvalues, stability and damping ratio of different modes of system are studied. This analysis shows that which parameters variation can deviate the system from normal working conditions as well as which parameters variation can improve the system behavior. For evaluating the stability and different controllers design, the simulation results show the effects of parameters variations.

Spinach is one of the most important green leafy vegetables (Spinacia oleracea L.). The qualitative and quantitative trait of the spinach depends on the weather conditions. Screening the foreign accession compare with Iranian ones is necessary for breeding purposes. In order to study the vegetative characteristics of 44 endemic and foreign accessions, an experiment was conducted in a randomized complete block design (RCBD) with three replications and 18 observations in spring, 2018. Quantitative and qualitative parameters of spinach evaluated based on descriptors investigated by Bioversity International Plant Genetic Resources Institute. In general, the intensity of the green color in the leaf of foreign accessions was higher than of endemic spinach. In this study, the highest yield belonged to “Viroflay” (71.224 ton/ha) among foreign accessions and, “Varamin88” (52.6 ton/ha) among Iranian's accessions had the highest performance. Minimum and maximum yields from 71224 to 8870 (kg/ha) belonged to accessions “Viroflay” and “Virginia savoy blight”. “D’inverno” accession showed the longest period of spring growth (89.66 days) and among the Iranian accession, “Hamadan2” (77 days), “Varamin88” (72 days) and “Varamin Prickly” (69.66 days) showed the longest growth in Isfahan environmental conditions respectively. The highest percentage of female plants was observed in “Monatol” accession. Among the endemic accessions, “Lorestan5” showed the highest female plant percentage. The results of this study showed that Iranian's accessions such as “Kashan”, “Lorestan6” and “Varamin Advanced Prickly” are suitable for mechanical harvesting due to their plant form, leaf and petiole attitude and can be used for plant breeding purposes. According to the cluster analysis, the accessions in this study were divided into two large groups (I, II), which the “Varamin88” placed beside the foreign outstanding accession in cluster I.

In this research work, solvent extraction and stripping of zinc ions from a Zn-Mn-Cd-bearing solution was investigated using D2EHPA as the extractant in a chloride medium. The efficiency of the extraction and stripping stages was evaluated separately, and different parameters such as the pH, extractant concentration, reaction temperature, and contact time were studied. Based on the results obtained, 97% of zinc, 14% of manganese, and 3% of cadmium were extracted at pH = 2.5, 10% (v/v) of D2EHPA, and 40 °C from the solution containing 5 g L-1</sup> of each metal ion. The stripping isotherms of zinc, manganese, and cadmium at different pH values showed that manganese and zinc were stripped at two different pH values. Thus more than 70% of manganese and more than 90% of zinc were stripped at pH = 2.5 and pH = 0.5, respectively. Kinetic studies indicated that the extraction and stripping of zinc in the first 0.5-1 minute was high. The McCabe–Thiele diagrams showed that two stages of extraction and two stages of stripping in the continuous counter-current flow condition were adequate to separate zinc from Mn and Cd. The dominant Zn species extracted by D2EHPA was ZnCl+</sup>, and the values for the thermodynamic parameters ΔHo</sup>, ΔSo</sup>, and ΔGo</sup> were 25.65 kJ mol−1</sup>, 79.20 J K−1</sup> mol−1</sup>, and 0.86 kJ mol−1</sup>, respectively, which showed that the reaction was endothermic at equilibrium.

The main mission of blood centers is to provide safe and adequate blood products for patients. With the advancement of science and technology, the need for safe blood still has priority and no substitute for human blood is discovered. Participation in social activities such as voluntary blood donation should be provoked by different entities including public relations departments. The purpose of this study was to investigate the role of public relations departments in the motivation of citizens' participation in blood donation in Ardabil.
 

This cross-sectional study was conducted by multistage cluster sampling on 384 citizens over 18 years of age and using questionnaires in Ardabil. SPSS 22 data analysis software and regression data analysis were performed.
 

Donors aged between 18 and 60 years old participated in the study. Research findings showed that the mean rates of the role of public relations was 3.66 (Deviation 0.84), persuasive role 3.72 (Deviation 0.41), awareness role 3.60 (Deviation 1.46), problem-solving role 3.11 (Deviation 0.51), advisory role 3.45 (Deviation 0.48), the role of relationship management 2.80 (Deviation 0.57),  the role of public education 2.57 (Deviation 0.63). According to the findings, the mean rates of the citizen participation are 3.21 (Deviation 0.33), conditional behavioral participation 3.35 (Deviation 0.51), solidarity-oriented participation 3.36 (Deviation 0.73), and development-oriented partnership 3.22 (Deviation 0.78).
 

Dimensions of public relations (as persuasive, awareness, problem solving, advisory, relations management) in Iranian Blood Transfusion Organization has placed positive impact on the motivation of Ardabil citizens to participate in blood donation.
 

In this paper, an analytical solution for the asymmetric temperature distribution in a long orthotropic cylinder, by considering the Cattaneo theory, is presented. The temperature distribution, due to the non-axisymmetric initial condition, is obtained by using the separation of variable method. In order to verify the analytical results, the governing equations are solved numerically by using finite difference method. In presented results, the effect of the heat wave travelling from the outer wall and simultaneously from the center into the cylinder as well as their interference on the temperature distribution is discussed thoroughly. Additionally, the effect of lay up angle on the temperature distribution in both radial and circumferential directions is investigated. The time history of the non-Fourier temperature has a wavy form in contrast to the Fourier one. According to the results, the non-Fourier temperature distribution does not converge to the Fourier one before reaching to the steady state.

Now days, simulation of viscoelastic flows at high Weissenberg numbers is one of the most obstacles and important issues for rheologists to observe the rheological properties at sufficiently high weissenberg number. It is well known that the conformation tensor should, in principle, remain symmetric positive definite (SPD) as it evolves in time. In fact, this property is crucial for the well-posedness of its evolution equation . In practice this property is violated in many numerical simulations. Most likely, this is caused by the accumulation of spatial discretization errors that arises from numerical integration of the governing equations. In this research we apply a mathematical transformation, the so-called hyperbolic tangent, on the conformation tensor to bound the eigenvalues and prevent the generation of negative spurious eigenvalues during simulations . The flow of FENE-P fluid through a 2D channel is selected as the test case. Discrete solutions are obtained by spectral/hp element methods which based on the high orders polynomials and have high accuracy for physical instability problems. This enhanced formulation, hyperbolic tangent, prevails the previous numerical failure by bounding the magnitude of eigenvalues in a manner that positive definite is always satisfied. Under this new transformation, the maximum accessible Weissenberg number increases 100% comparing the classical constitutive equation(FENE-P classic).

Changes in the geographical distribution of plants are one of the major impacts of the climate change. This study was aimed to predict the potential changes in the distribution of Artemisia aucheri Boiss in Isfahan rangelands. Therefore, six bioclimatic variables and two physiographic variables were used under the Generalized Linear Model (GLM), Flexible Denotative Analysis (FDA), Surface Range Envelope (SRE), Random Forest (RF), and Multivariate Adaptive Regression Spline (MARS), as well as in an ensemble model framework. Among the environmental factors, the mean temperature of the coldest quarter and the mean annual precipitation played the most important role or exhibited relative importance in model fitting. Based on the model evaluation, the ensemble model and then MARS presented the most accurate prediction in the determination of the climatic habitat. There was also a significant difference between area under curve (AUC) of the SRE model with a good performance and other models with a high performance. The maximum presence of the species occurred at the 2000-3000 m elevation and the 100-250 mm annual precipitation. In both CCSM4 and MPI-ESM-LR climatic models, the highest amount of habitat displacement is likely to happen under the RCP8.5 scenario in 2070, while the lowest amount may happen under the RCP2.6 scenario in 2050. Also, the habitat of species will be displaced more in 2070 than in 2050. The results of this study can be used to prioritize conservation measures or species introduction into areas with similar ecological conditions.

Selecting the appropriate rangeland improvement method is a challenging task for range managers because it requires consideration of  various criteria. This study was  aimed to evaluate various restoration and reclamation practices in the rangelands of Semirom-Isfahan using Multi-Criteria Decision Making (MCDM) methods. Grazing management, water point development, pit seeding, exclosure, water harvesting and planting almond, fertilization and direct cropping of forage were compared using various social, economic, managerial and environmental criteria. These criteria included cost, local conflict, response time, applicability of method, employment, forage production and their effectiveness. The criteria were weighted from 0 to 1 for all rangeland improvement alternatives based on the  results obtained from 30 questionnaires from experts in universities, Isfahan Research and Education Center for Agriculture and Natural Resources, and Natural Resources and Watershed Management Organization of Isfahan. The criteria were ranked based on the Likert method and rangeland improvement alternatives were compared using the MDCM approach and the  Facilitator software. According to the results, grazing management and pit seeding were identified as the best rangeland improvement alternatives, with favorability ranges of 0.54-0.98 and 0.6-0.95 respectively Water resource development had a lower risk of failure with the favorability ranges of 0.55-0.76, as compared to the other alternatives. The results, therefore, indicated that performing water harvesting along with planting almond in this area could be an inappropriate rangeland improvement alternative with the  favorability of less than 0.5, so it should not be implemented in this area.

Titanium dioxide nanoparticles (TiO2) are known as a widely used photocatalyst. In order to improve the performance of these nanoparticles, the recombination of the electron-cavity pair must be reduced and the absorption rate of the visible region should be expanded. One way to increase the performance of these nanoparticles is using cerium doped TiO2. In the present study, pure and doped titanium dioxide nanoparticles were made by the electrical discharge method. The effect of cerium dopants on the structural, morphological and optical properties were studied by x-ray diffraction (XRD), scanning electron microscopy (FESEM), diffused reflection spectroscopy (DRS), photoluminescence (PL) and infrared fourier transform (FTIR) spectroscopy analyses. XRD analysis revealed that the size of TiO2 nanocrystals was decreased to 7.7 nm. The FESEM morphology of the samples also showed that the uniformity of the Ce doped TiO2 was decreased. Further, the DRS results indicated that the band gap energy of Ce-TiO2 was decreased to 2.24 eV. The photoluminescence results demonstrated that the intensity of PL was reduced for the Ce-TiO2 sample, which reduced the recombination of the electron-hole coupling and increased the photocatalytic activity in the doped sample.

In this research, we are proposing carbon-ceramic electrodes containing TiO2 nanoparticles and MWCNT for the degradation of Reactive Blue 222 dyes by sonoelectrochemistry. In addition, an electrochemical nanosensor based on glass carbon electrode modified with graphene oxide and gold nanourchins was introduced to online determination of dye. Due to the special characteristics of nanoaddetive, the proposed nanosensor has unique features such as high surface area, accelerated electron transfer and high stability. The results of determination the Reactive Blue 222 dye in a concentration range of 25-900 μM with a detection limit 8 μM depict a good performance of the sensor for determined dye. The degradation process were optimized various factors affecting including the amount of potential difference, the amount of TiO2 nanoparticles, MWCNT and the solution pH by the statistical response surface method. At optimal conditions, including pH 0.8, potential difference 0.90 V on carbon ceramic electrode containing 0.2 wt% TiO2 and 3.89 wt% multiwall carbon nanotube during 120 min applying sonoelectrochemical degradation, 96% of 1.0 mM Reactive Blue 222 was degradaed and 88% of initial TOC value (121.33 ppm) was reduced.