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In recent years, the demand for healthy functional foods has increased and food industry is trying to meet these new needs. This study aimed to assess the effect of different concentrations of green tea powder (GTP) on the physicochemical characteristics, sensory properties, antioxidant activity, and culture viability of probiotic ice cream over a 90-day storage period. Seven ice cream samples containing 0–3% GTP and Lactobacillus casei were produced and evaluated at 0, 30, 60, and 90 days of storage. Folin-Ciocalteu and diphenyl picrylhydrazyl (DPPH) methods were applied to determine the total polyphenol content and antioxidant property, respectively. The results showed that the titratable acidity, antioxidant activity, total polyphenols, viscosity, melting resistance, and viable count of L. casei increased with increasing GTP concentration (p<0.05). Also over time, there was no significant difference in viscosity and total solids, but the total phenol, antioxidant activity, and viability of probiotic bacteria decreased significantly (p<0.05). The results of the sensory evaluation revealed that the flavor and color of the samples containing 1.5 and 2% GTP had the highest scores (p<0.05). Samples containing 1.5 % GTP that had the highest score of color, flavor, and overall acceptability, high antioxidant activity and viable count of L. casei ≥ 10⁷ cfu/g during storage could be introduced as a new product with health-promoting properties.
 

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The Economic Schedules of Shah Abbas I (1587-1629) are considered an important step forward in bringing a major transition in regional and international commerce during the medieval age. That could possibly performed through an extensive autonomy of the central government on the southern coast specially Hormuz and Kish islands that incurred national benefits in foreign commercial and logistic relationship especially with European countries. The strategic commodity of silk has had significant role in reconstruction of commercial ties between Iran and European countries. Using historical and geographical accounts (travelogue), this article tries to recognize the importance and status of the southern Iranian ports in silk trade with a case study of Bandar Abbas.  The findings show that the process of silk commerce in Iran was organized with a precise supervision of Shah Abbas himself and his efforts to come up with production centers such as Kashan, Yazd and Isfahan in central Iran as well as export centers in southern regions such as Laar and Bandar Abbas.    

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Choosing the right equipment in terms of price, performance and reliability, is one of the main challenges in the automation industry. Among these equipments, electric motors are the most important elements which are widely used in the industries. Electro motors selection is made according to certain rules and principles, and it is very important to know the governing conditions. Using amotor with less power than required will lead to system failure and a motor with much more power will result in extra costs. In this article, scientific selection of an electric motor for the bending process in an automation system has been discussed. Using real conditions of a manufacturer and available data in articles and books, the necessary relationships were extracted. 28 number of motors (among the available ones) were nominated in the first stage of preliminary monitoring. Then, by applying other prevailing conditions and characteristics, 3 motors with different powers selected for final investigations. Eventually, after using Simscape simulations & exerting less energy consumption criteria, the 5RK90GE-CW2ML2 motor (manufactured by Oriental Motor Company) was selected and was approved after satisfying the power, quality and safety conditions.
 

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In the Safavid era, cities played a decisive role in the activities of urban social life, especially with regard to commodity, distribution and exchanging system between urban and rural society as well as defining the role of organizations in the commercial process. This paper is based on historical analyzing method where the authors could utilize primary sources to study social and economic states of urban life in Persian cities during Safavid. Farah Abad, Isfahan and Bandar Abbas in North, Center and South of Iran have been examined. These cities were selected considering their functional nature as producer, industrial (processor) and exporter centers.
The outcome of the study shows that the cities founded and developed during Safavid, specially on Silk Road, during the reign of Shah Abbas I (996-1038 AH), played the role of producer, distributer and exporter in north, center and south of Iran. Based on their functional capacities, cities of that era are divided into three types: producer of raw materials, intermediary and processing, and finally exporter (port) cities. The analysis of economic relations of those cities indicates that the king had despotic monopolization of all aspects of the cities where the urban economy deeply on agricultural economy of countryside.