z. ebrahimi

In this research, an indirect flow solar dryer of vegetables with indirect heating of nanofluid has been experimentally tested. The system consists of a flat plate solar collector with a water-iron nanofluid working fluid and the dried material is mint vegetable. The time of the experiment was the summer and fall of 1400 at Payam Noor University in Aghajari in the south of Iran. The studies showed that the average efficiency of the collector used is 44.3% and the average thermal efficiency of the dryer is 26.1%. Also, the results obtained from this study in comparison with previous researches provide an acceptable performance in terms of efficiency for dryers with indirect heating. Weather conditions including temperature, humidity and solar radiation were evaluated. According to the data, it was found that the influence of humidity and wind speed was small due to the lack of significant changes and the correlation coefficient was close to 0.3. But in terms of air temperature and solar radiation, with increasing temperature and radiation, the drying stages take place in less time, so that the equilibrium humidity reaches less than 10% in about 5 hours and causes t the dryer efficiency reaches about 29%.

The issue of knowledge and culture and how to institutionalize them in the social system is already one of the approaches of the late period in the university system. Academic centers in the dynamics of changing their function, today has a fundamental mission in learning the flow of the system of knowledge and culture, and religious culture in the feedback of the educational system, is the focus of the drivers of thought. Waqf, as the source of the grace of the system of thought, can fulfill many civic obligations in this activity.

The purpose of this study is to present a meta-combination of the main examples and themes of religious culture in the Islamic University based on studies.

  Accordingly, the present study is qualitative in terms of the purpose of the applied type and research approach. The statistical population of the study includes researches in the field of religious culture in which a total of 95 published articles were selected and examined physically or electronically. According to the research criteria, 14 articles were purposefully selected and the analysis took place.

  Deep attention to the issue of culture and its basic structures as one of the characteristics of the endowment is the central theme and the main theme of these articles that emphasize the need to promote endowments in the field of the university system. At the same time, providing an effective scientific solution on how to umbrella the component of culture before the endowment in the academic system is a neglected issue of this research.

Findings of the article show that religious culture has 12 examples in terms of economic criteria, 19 in terms of social criteria and 17 examples in terms of culture.

To investigate the effects of different salinity levels on the essential oil content, and some morphological and physiological characteristics of two oregano subspecies (Origanum vulgare subsp. gracile (K.Koch) letsw. and O. vulgare subsp. hirtum (Link) letsw.), a factorial greenhouse experiment was conducted in a completely randomized design with four treatments and three replications. The salinity stress treatment was applied using sodium chloride in Hoagland nutrient solution at four levels of control (no stress), and mild (salinity 30 mM), moderate (salinity 60 mM), and severe (salinity 90 mM) stresses. According to the results, under salinity stress the growth indices, total carotenoids, and chlorophyll index decreased, but the activity of antioxidant enzymes and concentration of malondialdehyde and hydrogen peroxide increased in both subspecies. The wet and dry weight, carotenoids, hydrogen peroxide, and guaiacol peroxidase activity were obtained higher in subsp. hirtum than subsp. gracile. The percentage and essential oil composition were also affected by salinity. With increasing the salinity levels, the essential oil percentage was significantly increased compared to the control and its highest amount (0.8%) was observed under mild stress. Thirty five compounds were identified in both oregano subspecies essential oil. Carvacrol (30-72%: subsp. hirtum crarvacrol more than the other subsp.), γ-terpinene, carvacrol methyl ether, and p-cymene were the main components of both subspecies. The results of this study demonstrated the superiority of subsp. hirtum to the other oregano subspecies in terms of the tolerance to salinity stress and also quantitative and qualitative yields.

This paper investigates the weldability of super-duplex steel hollow pipes, which are welded by Gas Tungsten Arc Welding (GTAW) process, using destructive and non-destructive tests. Non-destructive inspections were performed by visual inspection and radiography, which indicate the proper quality of the performed welds. Material analysis, metallographic, tensile and hardness tests have been performed for different welding positions. The effects of the welding position on the microstructure and mechanical properties of the welded specimens were investigated. The results of the metallographic test reveal the good balance between austenite-ferrite phases in the weld zone. According to materials analysis, chromium to nickel weight percent is higher at the 12 o’clock position. The hardness test results show that the average hardness is the same in different welding positions. The presented results indicate the good weldability of the super-duplex steel pipes fabricated by the GTAW process. The weldability assessment of the GTAW super-duplex steel hollow pipes using both destructive and non-destructive tests, at different welding positions, is an innovative research.

Data Envelopment Analysis )DEA( is a technique for measuring the efficiency of decision making units. In all models of the DEA, for each unit under assessment, the numerical efficiency which may be less than or equal to one is obtained. Given the possible large number of efficiency units for evaluating units, we use various methods of ranking. span style="font-family: Cambria Math;font-size:8pt;color:rgb(0,0,0);font-style:normal;font-variant:normal L1 norm is one of the methods of ranking. This method has been used for categorical data. In this paper, we assume data as interval and introducespan style="font-family: Cambria Math;font-size:8pt;color:rgb(0,0,0);font-style:normal;font-variant:normal L1 norm andrun it on a single example.

Abstract

Mixed germ cell tumors of the ovary uncommon but aggressive tumors are seen most often in young women or adolescent girls and are generally curable if found and treated early. Use of chemotherapy after initial surgery has dramatically improved the prognosis for many females with these tumors. This study reports a case of successful pregnancy in a patient with malignant ovarian mixed germ cell tumor. Case Report: The patient was an 18-year old nulliparous woman who had pelvic pain menstruation delay right Adnex mass and positive B-HCG. She was found to have a malignant mixed germ cell tumor comprising of both embryonal carcinoma and immature teratoma. Treatment consisted of salpingo-oophorectomy with adjunctive chemotherapy. In view of malignant germ cell tumors occurring almost exclusively in young females preservation of their ovarian function and fertility was an important issue. The present study confirmed that normal gonadal function and fertility are possible after conservative surgery for ovarian germ cell malignancies even with adjuvant chemotherapy.

Background and objectives Takayasu s arteritis so-called pulseless disease is a syndrome mostly seen in young women. It is a chronic inflammatory arteritis affecting large vessels. It is associated with abnormal angiography of the upper aorta and its main branches resulting in vascular impairment in the upper extremities. This report presents a case of successful pregnancy in a patient with Takayasu s arteritis. Case The patient was a 36 years old G2P1 woman. Her first child was delivered by cesarean section. She was suffering from Takayasu s arteritis and was treated with prednisolone since 7 years ago. She had an unplanned pregnancy after expulsion of IUD. In her past medical history in addition to Takayasu s arteritis involving subclavian artery an iodine 131 ablation for treatment of hyperthyroidism was noticed. She was first sought medical attention at 8th week of pregnancy and as she had normal cardiopulmonary and renal functions the pregnancy was continued. Subtotal thyroidectomy was performed at 10th week of gestation following a suspicious FNA showing a cold thyroid nodule. She was then treated with thyroxine in addition to prednisolone to control the post-thyroidectomy hypothyroidism. At 37th week her pregnancy was terminated by cesarean section with epidural analgesia because of reduction of amniotic fluid index and a BPS of 8/10.