Showing 43 results for Ty
Volume 18, Issue 52 (7-2003)
Abstract
To prove the famous Cohen factorization theorem, even in Banach algebras, having a bounded approximate identity has special importance. In extending the Cohen’s theorem to topological algebras, we not only use an approximate identity, but some more powerful boundedness is also needed. Here we recall an open problem about uniformly bounded approximate identities on complete metrizable LMC algebras, and try to answer it1.
Volume 18, Issue 56 (9-2006)
Abstract
Due to the importance of benthic cyanobacteria in nitrogen fixation in paddyfields, the physiological responses of Fischerella ambigua FS 18 to salinity (NaCl 0, 0.5 & 1%) were investigated. Results indicated that growth rate was higher in control and that NaCl did not inhibit growth of other treatments. Similar responses were seen in the case of other physiological processes. Chlorophyll was declined with increasing salinity. Phycobiliproteins (PBP), phycocyanin (PC) and allophycocyanin (APC) were at least in 0.5% but the differences were not significant. The light-saturated photosynthetic rate was higher in control and decreased with increasing in salinity. With respect to nitrogenase activity, the highest rate was in control and the cultures with higher growth rates reached to the maximum level at a shorter time. There was no significant difference between 0.5 and 1% in relation to nitrogenase activity.
Volume 18, Issue 56 (9-2006)
Abstract
Premenstrual syndrome is a common cyclic problem among the young and middle -aged women which occurs in the luteal phase of the mestrual cycle. It is characterized by a combination of distressing physical, psychological and behavioral symptoms. The prevalence and frequency of syndrome (PMS) was assessed in all students living in an undergraduate female dormitory of Teacher Training University. The results of this study showed that among 326 nuliparous students, 98.2% of them regularly experienced symptoms consistent with PMS. The 4 most common symptoms were abdominal pain, backache, depression and anger. In this study the most disagreeable symptoms were abdominal ache (29.1%), backache (21.6%), anger(9.7%) , anxiety( 9%), and social withdrawal (8/80%) . There was an association between the city of origin and some of the symptoms such as: depression and acne in north of Iran and abdominal ache and back pain in east of Iran. About 43% of students had familial history of PMS and 51% of them took drug for decreasing their symptoms. A severe form of Premenstrual syndrome is premenstrual dysphoric disorder (PMDD), which its prevalence among the university students was 16.9% .
