in this paper we investigate the mechanism of internal erosion caused in the right abutment of the shahghasem dam’s spillway. shahghasem dam is an earthen dam located in yasouj, in southwest of iran. a significant hole and pipe have been observed in the corner of the right abutment from upstream view. the foundation is marlstone, which has low cohesion and susceptible for internal erosion and p...

aim and background: the aim of this study was to examine the quality curriculum of the department of clinical psychology of tehran university medical science.  methods and materials: it is a descriptive case study and the sampling comprises ma, phd students and attending professors of the department of clinical psychology tehran university of medical sciences in the academic year of 2010-2011 e...

conclusions in our conditions, the use of an anatomical landmark-guided procedure was the preferred treatment method due to limited resources and a lack of adequate training. background central venous cannulation is a current and important procedure used in the operating room and intensive care unit. some studies have shown that the application of ultrasound-guided cannulation can improve the s...

background:   to compare the results of two different ways of distal femoral osteotomy stabilization in patients suffering from genuvalgum: internal fixation with plate, and casting. methods:   in a non-randomized prospective study, after distal femoral osteotomy with the zigzag method, patients were divided into two groups: long leg casting, and internal fixation with blade plate. for all pati...

ibn al- rumi, the great arab poet of the 3rd , century(ah) is well known as literary imaginer. he was also skillful in the  music of poetry as it made his poems pleasant and effective since the music in his poems was harmonized whit content and sensation. the most beautiful part of his music poetry is internal music that we cannot hear it obviously; however, but it is hidden behind the words an...

background: mesocolic hernias are extremely rare. their exact incidence is still unknown. the clinical features are nonspecific and range from bilious vomiting and chronic abdominal pain exacerbated by meals, to asymptomatic presentations incidentally discovered during surgery. preoperative diagnosis still is difficult in spite of imaging techniques currently available. case report: in this stu...

Inspired by recent work of Batanin and Berger on the homotopy theory of operads, a general monad-theoretic context for speaking about structures within structures is presented, and the problem of constructing the universal ambient structure containing the prescribed internal structure is studied. Following the work of Lack, these universal objects must be constructed from simplicial objects ari...

Objective: To review internal impingement of the shoulder. Design: Review article. Anatomic & Biomechanical Factors: Internal impingement is typically understood to be the impingement of the cuff on the posterior-superior labrum, with shoulder abduction and external rotation, a position seen in overhead athletes. While pinching of the cuff on the posterior labrum can be seen in normal subjects,...