{"title":"枣干果实若干物理性质的测定","authors":"M. Pourjafar","doi":"10.21013/JAS.V8.N2.P1","DOIUrl":null,"url":null,"abstract":"Some physical properties of Iranian Jujube fruit were evaluated. Jujube fruit samples mean values of length, width, thickness were found as 18.005mm, 14.96 mm, 15.26 mm. Arithmetic mean diameter, geometric mean diameter were found as 16.08mm, 16.01 respectively and surface area, Sphericity, porosity, mass, volume, bulk density and true density were also found as: 805.65 mm 2 ,89%, 77.2%, 1.45gr, 2.61 cm 3 , 0.23gr cm -3 , 0.55gr cm -3 respectively. Projected area perpendicular to length, width and thickness were measured as, 152.03 mm 2 , 220.02 mm 2 , 271.4mm 2 respectively. With comparison between friction coefficients on different surface for Jujube fruit. The results showed that the static coefficient of friction was more than dynamic coefficient of friction.The tests done on the galvanized steel surface, plywood and glass surface. The most coefficient of friction was found on the plywood surface and the least coefficient of friction was measured on the glass surface.","PeriodicalId":14487,"journal":{"name":"IRA-International Journal of Applied Sciences","volume":"111 1","pages":"48-54"},"PeriodicalIF":0.0000,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Determination of Some Physical Properties of Dried Jujube Fruit\",\"authors\":\"M. Pourjafar\",\"doi\":\"10.21013/JAS.V8.N2.P1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Some physical properties of Iranian Jujube fruit were evaluated. Jujube fruit samples mean values of length, width, thickness were found as 18.005mm, 14.96 mm, 15.26 mm. Arithmetic mean diameter, geometric mean diameter were found as 16.08mm, 16.01 respectively and surface area, Sphericity, porosity, mass, volume, bulk density and true density were also found as: 805.65 mm 2 ,89%, 77.2%, 1.45gr, 2.61 cm 3 , 0.23gr cm -3 , 0.55gr cm -3 respectively. Projected area perpendicular to length, width and thickness were measured as, 152.03 mm 2 , 220.02 mm 2 , 271.4mm 2 respectively. With comparison between friction coefficients on different surface for Jujube fruit. The results showed that the static coefficient of friction was more than dynamic coefficient of friction.The tests done on the galvanized steel surface, plywood and glass surface. The most coefficient of friction was found on the plywood surface and the least coefficient of friction was measured on the glass surface.\",\"PeriodicalId\":14487,\"journal\":{\"name\":\"IRA-International Journal of Applied Sciences\",\"volume\":\"111 1\",\"pages\":\"48-54\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IRA-International Journal of Applied Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.21013/JAS.V8.N2.P1\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IRA-International Journal of Applied Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21013/JAS.V8.N2.P1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
对伊朗枣果实的一些物理特性进行了评价。红枣果实样品的长、宽、厚均值分别为18.00mm、14.96 mm、15.26 mm。算术平均直径、几何平均直径分别为16.08mm、16.01，比表面积、球度、孔隙度、质量、体积、容重、真密度分别为805.65 mm 2、89%、77.2%、1.45gr、2.61 cm 3、0.23gr cm -3、0.55gr cm -3。垂直于长度、宽度和厚度的投影面积分别为152.03 mm 2、220.02 mm 2、271.4mm 2。对红枣果实不同表面摩擦系数进行了比较。结果表明:静摩擦系数大于动摩擦系数;试验在镀锌钢板表面、胶合板表面和玻璃表面进行。胶合板表面的摩擦系数最大，玻璃表面的摩擦系数最小。
Determination of Some Physical Properties of Dried Jujube Fruit
Some physical properties of Iranian Jujube fruit were evaluated. Jujube fruit samples mean values of length, width, thickness were found as 18.005mm, 14.96 mm, 15.26 mm. Arithmetic mean diameter, geometric mean diameter were found as 16.08mm, 16.01 respectively and surface area, Sphericity, porosity, mass, volume, bulk density and true density were also found as: 805.65 mm 2 ,89%, 77.2%, 1.45gr, 2.61 cm 3 , 0.23gr cm -3 , 0.55gr cm -3 respectively. Projected area perpendicular to length, width and thickness were measured as, 152.03 mm 2 , 220.02 mm 2 , 271.4mm 2 respectively. With comparison between friction coefficients on different surface for Jujube fruit. The results showed that the static coefficient of friction was more than dynamic coefficient of friction.The tests done on the galvanized steel surface, plywood and glass surface. The most coefficient of friction was found on the plywood surface and the least coefficient of friction was measured on the glass surface.
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