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Showing 2 results for Ghodusi
Volume 12, Issue 49 (10-2015)
Abstract
Iran has a long history in manufacturing a wide range of dairy products and cheese is one of the most important fermented dairy product which is high in protein. Lour cheese (Lour is similar to cottage cheese) is prepared traditionally in the mountainous region of Gilan province, north of Iran, using sheep or cow’s milk. This cheese is very well known cheeses in the region and is preferred by many locals. It is prepared through heating (up to the boiling point) the cheese whey with addition of milk (LCM) or Doogh (buttermilk) (LCB). In this study, batched of Lour cheese (with milk and with buttermilk) were produced in the traditional way and were examined for sensory, physicochemical and rheological properties. The results showed that the moisture content of LCM and LCB was 66/45% and 72/82 %, respectively. The amount of fat measured was 22/33% and 13/70 %, respectively. LCM contained less protein (8/77%) compared to LCB (9/73%). The study also showed significantly different preference for over LCB over LCM by 40 untrained panelists. These finding were backed up by the rheological analysis Overall, Lour cheese proved to be a healthy alternative for feta type cheese however, more work is to be done to commercialize it.
Volume 19, Issue 12 (December 2019)
Abstract
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.
