m salehi

Determination or state estimation is one of the pillars of the Attitude Control System. Sensors are the main instrument for determining the attitude of the system, but due to the presence of various noises and disturbances affecting the attitude sensors, appropriate filtering methods should be used. Cost and weight reduction in flight systems has been very important, so the use of microelectromechanical sensors, due to energy consumption, weight and low price, has received much attention. But noise is one of the drawbacks of microelectromechanical sensors that by combining data from different sensors using fusion algorithms, the data can be improved. In this research, the Gain scheduled complementary filter algorithm on a low-cost sensor and in laboratory conditions, based on a test platform with high dynamics and noise is implemented and compared with Kalman filter data and fixed reference. Finally, laboratory tests that the proposed algorithm works more accurately than the Kalman filter by applying noises in a static state as well as considering the oscillatory motion.

The current research aims to assess the feasibility of groundwater resources in two soft and hard formations of the Shamil-Takht basin using logic and operators Fuzzy and Boolean in the GIS environment. For this purpose, eight and seven thematic layers in the soft and the hard formations were investigated and analyzed separately. The layers were prepared in a raster format in the GIS environment and then each of the layers was classified according to the values of usefulness obtained with Fuzzy membership degree and 0 and 1 Boolean values. In the next step, AND and Gamma operators for Fuzzy layers and Algebraic Multiplication operators for Boolean logic were used in combining layers. The groundwater potential map of the studied area was obtained from the desired pixels resulting from performing the operations at the output. Based on this, in Fuzzy logic, 77.1% of the area of soft formation and 11% of the area of hard formation, and in Boolean logic, 24.1% of the area of soft formation and 1.74% of the area of hard formation had the possibility of water sources. Areas with high potential of groundwater resources were in areas with low slope and cultivated and areas with weak potential of water resources were in areas with alluvial and sedimentary formations. Also, the field investigations confirm that the emerging springs and existing wells in the Shamil-Takht basin are located in the areas with the lowest slope and high density of the waterway.

In the present paper, two-stage refilled friction stir spot welding is used to join mild steel sheets with a thickness of 2 mm. Meanwhile, alumina and titanium oxide nanopowders are also introduced to the nugget to achieve superior mechanical properties. Two non-consumable tools are used with and without pins to weld and refill the keyhole, respectively. Before refilling, the keyhole is filled with nanopowders which are then distributed by the pinless refilling tool. Three parameters are investigated; the rotational speed of the welding tool and the rotational speed and dwell time of the refilling tool. The tensile test is used to evaluate the strength of the joints. The microhardness is measured in the welding zone to evaluate the powder distribution. The results suggest an increase in the joint strength by 42% and 18% with alumina and TiO2 as reinforcement, respectively. With a 31.94% contribution, the refilling tool rotational speed is the most effective input parameter affecting the joint strength. Considering the microstructure analysis and the microhardness test, the material flow pattern is mainly downward which results in the accumulation of the reinforcing powder in the lower sheet especially when a lower refilling tool rotational speed is used.

Quinoa is a dicotyledonous plant from the Amaranthaceae family, with favorable nutritional value and a high potential for growth and production in adverse environmental conditions. Despite being three carbon, it has high water consumption efficiency and as a new crop, due to its wide adaptation to different environment conditions such as salinity and drought, as well as being premature, it is suitable for planting in arid and desert areas and has many factors. Genetic and environmental factors such as genotype, density, arrangement and planting date, soil salinity, and drought stress affect yield. Among these, drought is one of the most important non-living stresses that cause great damage to crops and horticulture in the world every year. And especially Iran, which is considered an arid and semi-arid country. The effect of moisture stress on plants varies depending on which stage of plant growth occurs and plants can work through various mechanisms such as reducing growth parameters, closing pores, reducing photosynthesis, changing regulatory mechanisms of ion transport, and increasing activity. Antioxidant enzymes cope with drought stress to some extent, although such mechanisms are energy-intensive and cause a decline in performance.

order to investigate the optimal density of quinoa at different levels of irrigation, a factorial experiment was conducted based on completely randomized design with three replications at the research farm of the Faculty of Agriculture, Birjand University. The first factor was irrigation levels (based on 50, 75, and 100% water requirement) and the second factor was plant density at 5 levels (40, 60, 80, 100, and 120 plants m-2). Measurement traits included relative leaf water content, stomatal conductance, electrolyte leakage, number of branches, number of grains per branch, branch weight, 1000-grain weight, grain yield, water use efficiency, and grain protein.

The results showed that the yield components in response to low irrigation conditions were significantly reduced, so that the highest 1000-seed weight, number of branches, number of seeds per branch, branch weight and yield at the level of 100% water requirement were, respectively, 0.1 (g), 1368.4 (branching per square meter), 132.64 (grains per branching), 2377.8 (grams per square meter) and 3265.25 (kg ha-1) have been obtained. The maximum orifice conductivity measured at 35.66 (mol CO2 per square meter) was obtained at the beginning of flowering at 100% water requirement. Also, with decreasing irrigation level, physiological traits including relative leaf water content decreased significantly and traits such as electrolyte leakage and grain protein increased. The optimal density at the irrigation level of 100, 75, and 50% of water requirement were 113, 105, and 80 plants per square meter, respectively. The interaction of irrigation levels and density also showed that the highest yield was 100% of water requirement and density of 100 plants with 4226.52 kg ha-1. The results showed that at the irrigation levels of 100 and 75% of the water requirement, the highest yield was obtained at a density of 100 plants and with a decrease in density at these levels by 61.2 and 73.2%, respectively, was associated with a decrease in yield, but at the level of 50%. The highest yield was obtained at a density of 80 plants, which was accompanied by a decrease in yield to 40 plants with a yield of 73.5%. The results also show an increase in optimal density with increasing irrigation level, so that the most optimal density at the irrigation level of 100% of the water requirement is 113 plants per square meter and with increasing the stress to 75 and 50% of the water requirement, respectively, density Optimal yields of 105 and 80 plants per square meter have been achieved.

general, the results show that lack of moisture has an adverse effect on quinoa yield such as 1000-seed weight, branch weight, number of seeds per branch, and number of branches in the main inflorescence and reduces the optimal plant density.

Climate change is rapidly degrading the conditions of crop production. For instance, increasing salinization and aridity is forecasted to increase in most parts of the world. As a consequence, new stress-tolerant species and genotypes must be identified and used for future agriculture. Stress-tolerant species exist but are actually underutilized and neglected. Quinoa, scientifically known as Chenopodium quinoa Willd. is a member of the Amaranthaceae family. Promoting the cultivation and nutrition of quinoa will diversify food products in the country, sustainable production, increase farmers' incomes and provide part of the community's food needs. Crop simulation models have been used for various studies such as selecting the appropriate cultivar, determining the best planting date, predicting the effect of diversity and climate change on growth. Field research requires a lot of time and money, while computer simulation models can save time and money by conducting extensive experimental simulations.

This research was conducted in two regions of Yazd province with 10 separate experiments in the form of a randomized complete block design with 3 replications. Experimental factors included 5 promising modified lines in Yazd Salinity Research Center with Titicaca cultivar. The lines consisted of four intermediate maturity lines, numbered 1 (NSRCQE), 2 (NSRCQC), 3 (NSRCQD), and 6 (NSRCQA), one late maturity line numbered 4 (NSRCQB), and the early maturity cultivar Titicaca numbered 5. Sampling and note-taking were performed regularly, once every three days, in proportion to the progress of the phenological stages of each line. A model based on degree-day-growth was prepared in FST language. In preparing the length table, due to the short day of Quinoa, for all lines in the model up to 12.5 hours, the development rate was one, and after 13.8 hours, the development rate was zero. The base temperature in the model was 2 °C. Then, the model was calibrated and evaluated with data taken from the field.

RMSE (CV) coefficient of variation between 7 to 12%, root mean square error (RMSE) between 4.4 to 6.4 days, Wilmot agreement index (d) between 0.99 to 1, model efficiency (ME) between 0.96  to 0.98, the mean deviation from the model (MB) was between 0.05 to 0.08 and the coefficient of determination (R2) was between 92 % to 98%. These values indicated a good estimate of the day to flowering of quinoa with the model written in FST language, and the values of day to flowering simulated gained the necessary validity. The coefficient of variation of nRMSE (CV) is between 6.8 to 8.6%, the root mean square error (RMSE) is between 6.2 and 8.7 days, the Wilmot agreement index (d) is between 0.75 and 0.92, The mean deviation from the model (MB) was between 0.05 to 0.08 and the coefficient of determination (R2) was between 92% and 98%. These values indicated a good estimate of the day to physiological maturity with the model written in the FST language, and the day values to the simulated physiological maturity gained the necessary validity. Calibration and evaluation of model efficiency using root mean square error (RMSE), coefficient of variation or nRMSE percentage (CV), Wilmot agreement index (d), model efficiency (ME), and mean model deviation (MB), coefficient of explanation (R2), line test 1: 1 day until germination, flowering and good physiological maturity was estimated.

The results of this study indicated that, the quinoa model prepared for quinoa in terms of degree-day-growth well predicts the developmental stages (emergence, flowering and maturation) of this plant in terms of maturity (early, medium and late) and can be its help determined the appropriate planting date in different areas. This calibrated sub-model can now be used to evaluate different temperature and photoperiod effects for decision making in a wide range of growth environments in quinoa cultivation systems in current and future climatic conditions. Therefore, this sub-model can be used in educational-research and applied work in the field.

The shortage of different ABO blood groups is a permanent problem that many blood transfusion centers encounter. The conversion of blood group A and B to group O is a solution to this problem. In this research we aimed to clone and express the α-galactosidase enzyme gene to convert the blood group B to O.

In this experimental study, the α-galacosidase gene from coffee bean was codon-optimized and cloned into the pBHA plasmid. After replication in E. coli, plasmid was cut with BamH1 and Nco1 restriction enzymes and the α-galacosidase gene was purified by gel electrophoresis. The gene was then cloned into the expression vector, pET-20b. The expression construct was introduced into E. coli Rosetta 2 (DE3) and the expression of the enzyme was induced by IPTG. The presence of protein production was investigated using SDS-PAGE and Western blotting. Protein function test was also evaluated by the ability of B cells to convert to O cells.

The presence of the recombinant protein was confirmed by SDS-PAGE and Western blot assay. The purified protein could partially convert blood group B RBCs into group O as detected by decreasing the agglutination strength with B antiserum from 4+ to less than 1+.

The production of eukaryotic proteins in a prokaryotic host is a major step in mass production. Optimization of different expression conditions is essential to achieve sufficient amount of enzyme.

 Medicinal plants have played an essential role in the development of human culture. Medicinal plants are resources of new drugs and many of the modern medicines are produced indirectly from plants. Although the production of secondary metabolites is controlled by genes, their production is considerably influenced by environmental conditions, so environmental factors cause changes in the growth of medicinal plants as well as the amount of active substances. Essential oil quantity and quality are affected by the different environmental conditions. Physiological, morphological and genetic variations were seen in populations of species that occurred in different habitats. These variations were created in response to contrasting environmental conditions. In many plant species, studies on the pattern of variation in populations have shown the localized populations are adapted to the particular environmental conditions of their habitat. The genus Phlomis L. (Lamiaceae) includes about 113 perennial herbs or shrubs distributed in Asia, Europe, and Africa. Some of the Phlomis species have been reported for their traditional uses as analgesic, diuretic, tonic, anti-diarrheic agents and to treat various conditions such as gastric ulcer, inflammation, diabetes, hemorrhoids and wounds. In Flora of Iran, this genus is represented by 20 species, including Phlomis olivieri Benth.
 This study was conducted to evaluate the morphological and phytochemical diversity of eleven populations of P. olivieri Benth. from different districts of Hamedan province in 2021. Traits such as plant height, stem diameter, leaf length and width, fresh and dry weight of the flowering branch, inflorescence length, fresh and dry weight of the plant, number of inflorescence cycles, essential oil percentage were measured. In order to investigate the physical and chemical properties of soil, soil samples were collected from a depth of 30 cm. Then they were transferred to the soil laboratory. Plants samples were collected in the flowering stage and were dried at 25-30°C. They were stored in envelopes at 22±3°C away from the sun. For extracting the essential oil of the samples, 100 gr of the plant was milled and then distilled with water. Hydrodistillation lasted for 4 hours. The main components of essential oil were identified and determined by gas chromatography in the Institute of Medicinal Plants in Karaj. Gas chromatography was carried out on Agilent 6890 with capillary column 30m*0.25 mm, 0.25 mm film thickness. The grouping of populations based on morphological and phytochemical traits was done by cluster analysis in SPSS using the Ward method. Also, the traits correlation (quantitative) was done using the Pearson method.
 According to the results, the highest fresh and dry weight of flowering branch (6.96 g and 3.48 g) and also the highest fresh and dry weight of the plant (11.77 g and 5.86 g) belonged to the Koohani population. The tallest inflorescence (24.2 cm) belonged to the Jowzan population and the shortest inflorescence belonged to the Gammasiab population (8.9 cm). The highest stem diameter (4.45 mm) was observed in the Garin population. The maximum plant height (49.4 cm) was related to the Rahdarkhaneh population, which was not significantly different from the Garin population, and the minimum was related to the population of Garmak (31 cm), which was not significantly different from the population of Gammasiab (33.50 cm). Also, 31 compounds were identified in this plant essential oil that caryophyllene, germacrene D, and (E)-b-Farnesene had the highest percentage of essential oil constituents. In this study, the highest amount of essential oil (0.04%) was related to the Koohani population which had the lowest altitude among other populations. Therefore, it seems that environmental factors, as well as genetic factors, have been effective in creating diversity in morphological and phytochemical characteristics of this plant.
 The results obtained from this study showed that P. olivieri Benth. populations gathered from different regions of Hamedan province, had a high diversity in terms of essential oil content. The results showed that in addition to genetic factors, environmental and climatic factors also affect phytochemical traits. In this study, the highest amount of essential oil was produced in the Koohani population (located in Nahavand city) with the lowest altitude among other populations. According to the research on the essential oil components of P. olivieri in different regions of Iran, the components of its essential oil and their percentages are completely different; so, some of the components that are seen in one region, are not observed in another region, and this issue emphasizes on the effect of climatic conditions. This difference is quite evident even in the studied populations in a province.

In this paper, mechanical behaviour and buckling analysis of human femoral bone are performed using the finite element method. A method is proposed to model the geometry and mechanical properties of Femur specimens. Mechanical properties of the bone are regarded both as homogeneous and nonhomogeneous quantities. Compressive tests are performed in three regions of the midshaft to validate the mechanical properties obtained by the CT scan. Waterjet cutting method is used to cut the samples which are used in compressive tests, and the 3D-printed models are used to locate the samples between the jaws of the test machine. Critical axial buckling loads of the femurs are studied, applying both of the homogeneous and nonhomogeneous material properties. Results show that the buckling load which is obtained by proposed homogenous modeling technique is close to the one which is obtained by nonhomogeneous modeling, and the proposed method is quite capable to simplify the FE analysis of the diaphyseal cortical bone.

Salinity stress is one of the major abiotic stresses which injures plants by limited water absorption and nutrient imbalance and limits crop growth. In order to study the effect of nitrogen fertilizer on physiological traits of quinoa at high salt concentrations, a greenhouse experiment was conducted in a factorial arrangement based on a randomized complete block with three replications in 2019. The first factor included 5 levels of salinity (100 (control), 200, 300, 400, 500 mM) and the second factor comprised of 4 levels of nitrogen fertilizer (50, 100, 150 and 200 ppm). Traits that were measured included quantum yield, photosynthetic efficiency index, shoot dry weight, proline content, soluble sugar content, malondialdehyde content, catalase and peroxidase activity, shoot potassium and sodium content. Results showed that quantum yield, proline content and soluble carbohydrate were affected by salinity and nitrogen concentration. With increasing salinity levels from 100 to 500 mM, quantum yield, proline and soluble carbohydrate content increased, but with increasing nitrogen levels from 50 ppm to 200 ppm soluble carbohydrate and proline content decreased and increased, respectively. Shoot dry weight, malondialdehyde content, catalase and peroxidase activity, shoot sodium and potassium content were affected by the interaction of salinity and nitrogen levels. Results showed that at high levels of salinity and increasing nitrogen levels to 150 and 200 ppm, shoot dry weight and shoot potassium content decreased, also malondialdehyde, catalase, and peroxidase activity and shoot sodium content increased. According to these results, in low (100 and 200 mM) and medium (300 mM) salinity levels application of 200 ppm nitrogen and in high salinity (400 and 500 mM) levels application of 50 ppm nitrogen in nutrient solution of quinoa is reasonable.

Epidemiological studies have indicated the prevalence of a wide spectrum of diffused pigment lesions throughout the world and Iran. The aim of this study was to determine the frequency distribution of oral diffused pigment lesions in patients presenting to Oral Diseases Department of Isfahan Dental School.

A cross-sectional descriptive study was conducted on 303 patients presenting to Oral Diseases Department of Isfahan Dental School during the first three-month period of 2019. The demographic data, location of lesions, and type of lesions were recorded in a checklist and analyzed with the SPSS version 22 using Chi square, Mann Whitney test, Fisher's exact test, and spearman correlation coefficient. The level of significance was set at 5%.

In this study, 303 patients were examined of whom 93 (30.69%) were diagnosed with diffused pigment lesions. As for the pigmentation severity, the patients were grouped into low, moderate, and high with 54 persons (58%), 13 persons (14%) and 26 persons (28%) in each group, respectively. The most frequent site was labial gingiva and the most common type was the physiologic type. The results showed that gender had no effect on the frequency distribution (P=0.09) but gender and age had significant effects on the severity of pigmentation (P=0.047, r=0.459 and P<0.001 respectively). Skin color had a significant effect on the type of pigmentation
(P < 0.001).

The frequency of oral diffuse pigmentation in patients presenting to the Isfahan dental school was noticeable.

Rail wheels are one of the most important parts of rail vehicles. The presence of damage on the rolling surface of the wheels causes an increase in vibrations in the wheels, and consequently, this can damage other components. Rail systems generally follow a preventive inspection process, which is costly, low-efficiency, time-consuming and prone to human error. Nowadays, condition monitoring based maintenance is preferred for this purpose. In such methods, vibrations, noise or other functional parameters of vehicle components, including wheels, are measured and analyzed. In this study, a method for wheel damage detection by measuring rail vibrations is presented. By measuring the vibrations of the rails through installation of measuring devices, the vibrations caused by the passage of each wheel are recorded. Then, using the Moving Root Mean Square in the time domain, the health condition of the vehicle is monitored. Proper adjustment of related parameters such as window length and overlap in calculating Moving RMS has a great impact on the results. The proposed method is implemented on the measured data. The presence and location of wheel damage was determined successfully.

One of the important factors in the adaptation of plants to new environmental conditions is the appropriate response of development stages to temperature and photoperiod regimes. The thermal time, growing degree days (GDD) or heat unit concept is commonly the basis for modeling phenological development in crop models for different common crops and under-utilized crops. The GDD concept describes crop development as a function of temperature accumulation above the base temperature (lower limit) and in some cases below a cut off temperature (upper limit). Evaluation of plant photoperiod sensitivity is often beneficial help to use appropriate cultivars which in turn to ensure cultivation success. Considering that adaptation of quinoa to new regions demands acclimation to appropriate temperature range also day-length, this study aimed to investigation of quinoa response to Yazd weather condition as an arid region to assess the possibility of quinoa cultivation under these conditions.

This research was conducted through 10 separate experiments and were based on a randomized complete block design with three replications. The experimental treatment consisted of five lines (1, 2, 3, 4 and 5), and one cultivar (Titikaka) which belong to different maturing groups including early, middle and late maturing. Ten planting dates selected to be serial as following: March 29, April 29, May 28, June 28, July 26, August 23, September 6, September 20, January 29, and February 29. Every three days, phenological stages of each line including planting distance to each stage of development including emergence, four leaves, flower bud, panicle formation, pollination, seed filling, seed hardening and ripening were recorded accordingly. Using local weather data and equation 1 the needed GDD for every development stage was calculated:GDD= (Tmax-Tmin)/2-T(1)MS-Excel Ver. 15 was employed to arrange recorded data and required calculating. Fitting equations and plotting the graphs were done using Slide Write Ver. 2 and Minitab Ver. 20 software.  

The results showed that the mean of flowering temperature up to seed formation stage was between 25 and 30 °C for five lines and was between 20 and 25 °C in cultivar 6. The mean length of photoperiod for flowering and seed formation stage of these lines was between 12 and 12.5 hours. The relationship between temperature and day length was inversely related to the number of days of flowering stage, i.e., with decreasing day length and increasing temperature, the number of days for flowering stage was increased. The time required for flowering stage, between 20 to 30° C, for the early maturing cultivar was about 35 days, for the middle maturing lines including 1, 2, 3 and 6 was about 40 days and for the late maturing line 4 was about 45 days. At temperatures higher than 30 °C, a decreasing trend was observed in the number of days required for flowering stage. From the budding stage to the end of the growth period, a significant difference in the GDD was observed for the quinoa lines. The GDD of quinoa was the highest (2530 °C) for late maturing line (4) and was the lowest (1805 °C) for the early maturing cultivar. The effect of planting date on the GDD of quinoa lines showed that moving from March planting date to July, there was an increasing trend on the GDD of quinoa lines and by moving from July planting date to October, a decreasing trend was observed.

In general, quinoa is a short-day plant which is affected by the day length from flowering to seed maturity stages. Line 6 responded qualitatively to day length; however, the other lines responses were quantitatively. The study of the simultaneous effect of temperature and day length showed that temperature has a compensatory effect for day length during flowering stage. According to the results, it seems that the most suitable planting date for early lines suggests in September, for middle maturing lines suggests in August and for late maturing lines suggests in August. The results also showed that line 6 is more suitable than other lines for cultivation in cold regions.

In this study, microstructural changes in the thermomechanical processing and its effect on the corrosion behavior of 321 austenitic stainless steel were investigated. EDS analysis and optical microscopy were used to identify precipitates and microstructure, respectively. To evaluate the corrosion properties, potentiodynamic polarization test and electrochemical impedance spectroscopy were performed. First, the as-received sample was subjected to cold rolling with a 90% thickness reduction at liquid nitrogen temperature, and then annealing was performed at temperatures of 750, 850, and 1050 °C for 10 min. The results showed that severe cold rolling slightly improved the corrosion properties and in annealed samples, the corrosion resistance increased with more uniform microstructure, more reversion of martensite phase to austenite, and reduction of grain size. Annealed samples at 850 °C and 1050 °C with polarization resistance values of 8.200 kΩ.cm2 and 3.800 kΩ.cm2 depicted the highest and lowest corrosion resistance compared to other samples, respectively.

Today, given the capacity of developing economies, technological startups as start-up businesses play an important and considerable role, especially in the field of entrepreneurship. However, due to the lack of suitable platforms, both from the social perspective in terms of education and culture as well as from the economic perspective, they have many risks and this causes a lot of startups to have trouble in their commercialization process and eventually fail. Using entrepreneurial ecosystems at the university level is one of the approaches to effective development of startups, especially technological startups, which can provide the possibility of their effective development by recognizing the needs of the target market and considering the level of individual and collective capabilities of entrepreneurs and creating a balance between them. Thereofre, the purpose of this research is to develop university entrepreneurship ecosystems based on strengthening startups through rough set theories.

The methodology of this research is hybrid and to perform it, Meta-analyses, delphi and Rough Set Collection have been used. The target population in the qualitative sector comprised of similar research studies and academic experts at the entrepreneurial level. But the target population in the quantitative sector comprised of 20 managers and deputies at various academic levels in the Golestan province. Considering the requirement of using Rough theory analysis, this amount of the statistical population is acceptable.

In this study, first by screening the selected studies, 9 propositions for strengthening startups and 5 components of the entrepreneurship ecosystem at the university level were determined. Due to the confirmation of the theoretical adequacy limit based on Delphi analysis, they entered the analysis phase of Rough Set Theory. The findings in this section make it clear that the most influential propositions for strengthening startups are the existence of technological needs and the formulation of appropriate strategies. For their development in terms of entrepreneurship ecosystems at the university level, two educational / research and innovative functions should be considered as a platform for the development of startups.

 The entrepreneurs operating in the form of technological startups need to obtain the reuired data for the development of their business through collecting ecological information and paying attention to social approaches so that they can meet the technological demands by selecting a codified strategy in this area. Moreover, based on Gery Vikor’s analysis it was determined that the most influentiasl role of the university as entrepreneurship ecology is strengthening the level of educational and research functions. This means that it is necessary for the university to lead the educational level and the promotion of scientific research in the direction of entrepreneurship in the form of entrepreneurial policies announced by the president’s deputy for technology and information. As a result, the university can be turned into a platform for the formation and flourishing of entrepreneurial ideas in the form of startups.  In other words, the university can be effective in creating knowledge and developing capability and specialized entrepreneurial skills and cause the individuals to obtain appropriate entrepreneurial skills in the areas of enhancing their knowledge to start their own startup business. In fact, this finding reveals that in line with its defined nature and philosophy, the university should have educational and research functions that are aimed at the formation of entrepreneurial approaches especially in higher education levels and just avoid the development of theories that are impractical.  The philosophy of the existence of entrepreneurial ecosystems at the university level means that for this purpose the students’ level of knowledge can be developed and improved so that as an entrepreneurer, they can play a considerable role in today’s unstable economic environment.

Organizational culture is considered as an important element in the body of an organization that has a positive impact on the performance of the every organization, so that the success of any organization depends on culture of the organization, partly. Much research has been done on the role of this factor in promoting organizational productivity and achieving organizational goals. The present study was conducted to determine the impact of  Components   of Organizational Culture on components of  the Faculty Members᾽ development in Islamic Azad Universities of Khorasan Razavi.

This cross-sectional study conducted on 291 faculty members of Islamic Azad Universities of Khorasan Razavi using stratified random sampling in ​​the academic year of 2016-2017. Two questionnaires of organizational culture (derived from Denisonchr('39')s organizational culture model) and improvement (derived from Ijtihad et al., study) were used for measurements .Data were analyzed by Linear regression test, t-test, one-way ANOVA through SPSS.

The findings showed that the components of involvement (β = 0.159), adaptability (β = 0.153) and compatibility (β = 0.117) had a significant effect on the educational component of development.  Compatibility (β = 0.291) had a significant effect on the research component of development. Involvement (β = 0.187), compatibility (β = 0.384) had a significant effect on the individual component of development.  Involvement (β = 0.359), compatibility (β = 0.183) and adaptability (β = 0.119) had a significant effect on the organizational component of development. Involvement (β = 0.213), compatibility (β = 0.267) had a significant effect on the moral component of development. Components of both organizational culture and development were similar in gender and academic rank among the participants.

From this study, it was concluded that the components of organizational culture had a significant effect on the components of faculty members᾽ development. When the organizational culture is in the direction of development, faculty members perform their duties with more motivation and enthusiasm in educational, research, personal, organizational and moral dimensions.

The aim of this study was to investigate the modeling of Internet addiction based on social support with mediation alexithymia in high school students. The method of the present study was descriptive and structural equation modeling. The statistical population of this study consisted of all high school students in Sari in the academic year of 2014-2015. 361 students (178 girls and 183 boys) were randomly selected and completed the Zimt Social Support Scale, the Toronto Mediation Alexithymia Scale, and the Kimberly Young Internet Addiction Scale. The results of regression equations showed that social support has a direct effect on Internet addiction and indirectly mediation alexithymia. alexithymia have a positive and significant relationship with Internet addiction. Also, social support shows a negative and significant relationship with alexithymia (p <0.05). In total, the predictor variables predicted the 0.21 variance of Internet addiction. Therefore, in the field of Internet addiction in students, the variables of social support and alexithymia should be considered.

To evaluate safflower genotypes under saline conditions and select tolerant genotype(s), 18 safflower genotypes obtained from Dryland Agricultural Research Institute, Iran, were planted at three salinity levels (2, 6, and 12 dS m-1) as main plot and genotypes randomized in subplots using split plots arrangements in randomized complete block design with three replications in Sadough salinity research station, Yazd, Iran, in 2016-17 and 2017-18 growing seasons. Gentypes were selected based on their performance at different salinity levels as well as using stress tolerance indices. The mean reduction in seed yield in the first and second growing season at 12 dS m-1 salinity level relative to control was 36% and 51%, respectively. The STI, MP, GMP, HM, Yis, Yip and MSTI1 indices were highly correlated with seed yield in three environments. Using principal component analysis the first component designated stress tolerance and the second component was salinity stress susceptibility. The results of cluster analysis using stress tolerance indices that had high correlations with seed yield showed that genotypes 4, 26, 34 and 35 were superior to control (cv. Faraman) and grouped in one group, however, genotype 6 performed the same as control. Selected genotypes had higher seed yield in three salinity conditions. In conclusion, LRV-57-57, 26-S6-58-11, Local Kurdistan, Isfahan 4 and PI-537682 with average seed yield of 172, 120, 152, 155 and 141 g m-2, at 12 dS m-1 salinity level, respectively, were selected as salinity tolerant genotypes.

In the last couple of years, a number of new and rapid tests for the diagnosis of Tuberculosis (TB) have been developed based on the low molecular weight antigens from Mycobacterium tuberculosis (Mtb) culture supernatant. This study aimed to isolate and purify low molecular weight antigens secreted by Mtb strain C for diagnostic purpose. The secretory proteins from culture filtrate of Mtb were extracted using ammonium sulphate precipitations and sephadex-G50 gel chromatography. The obtained antigen fractions were analyzed for their protein concentrations and approximate molecular weight using Lowry method and SDS-PAGE (12.5%), respectively. DOT-ELISA and Western blot assay was performed to confirm the presence of purified low molecular weight proteins isolated from Mtb using sera from pulmonary tuberculosis patients (polyclonal antibodies). During chromatography, low molecular weight proteins were separated, that was approximately 0.7 mg/ml of the total proteins (1.662 mg/ml). The purified protein fractions in molecular weight range of 14 kDa-41kDa appeared during SDS-PAGE analysis. The chromatographic band fraction in the weight range of 30-41 kDa was identified in the TB patients’ sera using Western blotting. The low molecular weight proteins in the culture filtrate of Mtb strain C were purified using ammonium sulphate and chromatography. These fractions were confirmed using Western blotting. The obtained results might support the hypothesis that the Mtb culture filtrate antigens could be used as a rapid and sensitive assay for the detection of patients with pulmonary TB.

The purpose of this study was to determine the effectiveness of group games in preventing school anxiety and improving the self-concept of primary school children. A quasi-experimental study was conducted in two groups (pre-test and post-test). The statistical population consisted of all 12 to 13 year old school children in Tehran in 2015-16 that 30 students were selected by stratified sampling. Self-concept questionnaire related to Sanchez school, demographic checklist and school anxiety scale were used. Data analysis was performed using covariance analysis. The results showed that these scores were significantly correlated with school anxiety and academic self-concept, which were controlled by covariance analysis. According to the results of group games, there is a significant difference between school anxiety and academic self-concept scores in the control and experimental groups (P≤0.05). The results of this study include implications for future research on the application of learning and study strategies in preventing school anxiety and improving students' self-concept.

The purpose of this study is explaining the aspects of entrepreneurial University in Technical and Vocational University Area 8 (Mazandaran, Golestan, and Semnan provinces). According to the review of the research studies in the past including Ataiee et al. (2017), the researchers in the present study concluded that applying the criteria of the entrepreneurial universities in the organizational and educational chart of universities will result in the development of the power of innovation and creativity of students and graduates to perform entrepreneurial activities; Mahdi (2015) believes that the establishment and effectiveness of the entrepreneurial university is not possible without the systematic development of entrepreneurship education and effective training of students, professors, managers and staff of the university system and strengthening the entrepreneurial characteristics of the university's human resources. Bahayani (2015) believes that the following four elements should be considered for entrepreneurship in universities: organizational structure and management style, education and research, government facilities for entrepreneurial activities, entrepreneurial culture. Also, Naderi et al. (2014) emphasizes the entrepreneurial capabilities of students in terms of independence, internal control, motivation, success, risk-taking and creativity in different stages of higher education and by presenting a model with six different dimensions, they intend to take into account the dimensions and components of the entrepreneurial university within the technical and vocational university, which is the only university in charge of higher technical and vocational education in the country, and technical and vocational colleges, as the sub-units of this university, have a history of more than 40 years of educational activity and are among the first centers of higher education in the country. In fact, by determining the dimensions and components of the entrepreneurial university, it is possible to find out whether we have achieved our desired goals or not?

This research is applied in terms of purpose and descriptive in terms of method. The statistical population in this study is comprised of 448 individuals selected from all heads, deputies, official managers or expert officials and department heads of the technical and vocational colleges and institutes in district 8 (in Mazandaran, Golestan, and Semnan provinces). 207 individuals were chosen through applying stratified random sampling and Cochran formula. To collect data, a researcher-made questionnaire with 95 items was used. The validity and reliability of the research tools were confirmed. To analyze the data, exploratory and confirmatory factor analysis tests were applied.

The research findings have indicated that the entrepreneurial university in the technical and vocational university includes 6 aspects: educational and research aspects, structural and organizational aspects, human resources, social and cultural aspects, economic and financial aspects, information and communication technology, and 18 components: (educational and research), (structural, prespective, mission, strategy, management and leadership), (professors, staff, university students and graduates ), (social and cultural), (economic, financial, facilities, equipment and research contracts) and ( infrastructure, offices, centres and companies).

From the findings, it can be concluded that in addition to identifying the dimensions and components of the entrepreneurial university, the structural and organizational aspect with the load factor of 0.950 has the most influence and the social and cultural aspect with the load factor of 0.874 has the least influence.

This study sought to compare the metacognitive knowledge profile of weak and strong students in problem solving. For achieving this purpose, one hundred students of the second educational District of Tehran were chosen by cluster sampling. They responded individually to the questions of "the Metacognitive Questionnaire Interview" and in the next step their performance in the pendulum problem solving task was perused. Then the subjects were divided into weak or strong groups based on their performance on the pendulum task. In order to compare their profile in metacognitive knowledge, repeated measures factorial design was utilized. The results indicated that the main effect of factor A (problem solving ability) and main effect of factor B (metacognitive knowledge) were significant. The significance of the main effect of factor A demonstrates that there is a significant difference between weak and strong problem solvers regarding the pendulum task. Furthermore, the significance of the main effect of factor B shows that there are significance differences between categories of students’ metacognitive knowledge. In addition, the interaction effect of A and B factors was significant which is indicative of the fact that there are different metacognitive knowledge profiles in the two groups. In general, the findings show that metacognitive knowledge plays an important role in problem solving.

Box tree moth, Cydalima perspectalis (Walker, 1859), is one of the major destructive pests that feed on the leaves and shoots of various Buxus species. In the course of this survey, the life cycle of C. perspectalis was studied in laboratory and natural (Hyrcanian Forests) conditions. The laboratory experiments were carried out at temperature of 25±1ºC, 70±10% relative humidity and a photo phase of 16 light: 8 dark hours. The average duration of an egg, larva, pre-pupa, pupa, as well as female and male longevity were 5.09±0.04, 23.15±0.17, 1.04±0.02, 7.80±0.05, 15.31±0.73 and 12.92±0.71 days, respectively. As an important pest newly introduced in northern Iran, the Box tree moth completes two and partial third generations per year. The results of this study would be useful for improving pest management strategies.

Premature ovarian failure, with a prevalence of 1% in women under the age of 40, leads to serious health problems for women of childbearing age. Since the causes are not fully understood and the available treatments are associated with side effects, complementary medicine, including Persian medicine, can be helpful. The aim of this study was to report a case of pregnancy following successful treatment of premature ovarian failure.

 The patient was a 38-year-old woman with a history of 16 months of amenorrhea who had atrophic ovaries on ultrasound. Due to increased gonadotropins, decreased estradiol and anti-mullerian hormone, the gynecologist diagnosed premature ovarian failure. After referring to the Persian Medicine Clinic and after getting a history and examination, her treatment started which included lifestyle modification and medication (2 Raha capsules every 12 hours, 2 tablespoons of Sekanjabin-e-Bazoori [oxymel] a day, decoction of Chamomile and Pennyroyal 200 cc per day and Abzan [a human-sized container filled with hot water] with four plants of Hollyhocks, Chamomile, Rose, and Mallow twice a week). The patient was followed for 18 months. Menstruation occurred after 3 months and the ovaries were normal size after 8 months on the second ultrasound and 10 months after starting treatment, the patient became pregnant and the result was a healthy male baby.

According to the results of the present study, Persian medicine can be effective in treating infertility caused by premature ovarian failure.

Chronic low-back pain is one of the psycho-physiological disorders with a high prevalence, resulting in severe health and economic consequences. Therefore, this study aims to compare the effectiveness of positive psychotherapy with cognitive-behavioral therapy on pain perception in males with chronic low-back pain.

This study was a quasi-experimental study with pretest, posttest, and control group with 2 months follow-up. The statistical population included all men with chronic low-back pain referred to the Trauma and Pain Clinic of the Healing Neuroscience Research Center at Khatam Ol-Anbia Hospital in Tehran in 2019. Using the available sampling method, 45people were selected and randomly assigned to three equal groups. Therapeutic interventions for each treatment approach were applied in 8 sessions once a week, and each session lasted 90minutes for the experimental groups; however, the control group did not receive any intervention. A researcher-made demographic information checklist and McGill pain questionnaire were used to collect data. Data were analyzed by descriptive statistics and repeated-measures analysis of variance.

There was a significant difference in the linear composition of the pain perception variables, as well as its dimensions, including pain sensory, affective, evaluative, and miscellaneous in terms of group membership at the three stages of pretest, posttest, and follow-up, and the interactive effect of the group and time (p < 0.05). Besides, the two treatment groups (positivist psychology and cognitive-behavioral therapy) showed significant differences with the control group in terms of the components of pain perception and its dimensions (p < 0.05). There was no significant difference between the effectiveness of these two treatments (p>0.05).

Positive psychotherapy and cognitive-behavioral therapy effectively improve pain perception in patients with chronic low-back pain. Thus, these programs can be recommended as adjunctive therapy to trauma and pain clinics.

Salinity is one of the most important factors limiting plants growth and production in irrigated agriculture. The natural potential of salt tolerant plants like Kochia could be exploited through legume-containing intercropping systems as an effective strategy in mitigating the increasing salinity crisis.This experiment used split plots based on a randomized complete block design with three replications, in 2016 and 2017, at the Iranian National Salinity Research Center, Yazd, Iran. Water salinity was considered as the main factor (EC= 4, 9, and 14 dS m-1) and the cropping system was considered as subfactor with seven levels including sole cropping of Kochia (Kochia scoparia), Sesbania (Sesbania aculeate), and Guar (Cyamopsiste tragonoliba) and their possible dual and triple intercropping systems. The highest absorbed light was observed in triple intercropping and the total forage yield in triple intercropping was increased by 5% and 4.1% at 4 and 9 dS m-1 salinity, respectively, compared to that in Kochia sole cropping, while it decreased by 1.5% at 14 dS m-1.The Land Equivalent Ratio (LER) values ranged from 0.99 to 1.33. The total crude protein yield in triple intercropping was increased by 55.8 to 66.3% as compared to Kochia sole cropping. The NDF (Neutral Detergent Fiber) and ADF (Acid Detergent Fiber) were decreased by 7 to 22% in various intercropping systems. Considering increased forage quantity and quality, mainly through decreasing NDF and increasing Dry Matter Intake (DMI) levels, cultivation of Kochia within triple intercropping systems can be recommended instead of Kochia sole cropping.