we survey some recent results on cocharacters of upper triangular matrices. in particular, we deal both with ordinary and graded cocharacter sequence; we list the principal combinatorial results; we show di erent tech-niques in order to solve similar problems.

background and objective: to assess the incidence and risk factors of upper gastrointestinal bleeding in children admitted to pediatric intensive care unit for more than 6 hrs. methods: we prospectively collected medical records of children between 1 month and 18 years old admit-ted to our 10 bed picu of a tertiary care university hospital between december 1, 2014 and may 30, 2015. de-mographic...

purpose: to measure the upper eyelid crease landmarks in an iranian population sample. methods: we studied 208 iranian subjects aged 30 to 50 years. upper eyelid crease height was measured in lateral, medial and central positions using calipers. levator function (lf) was also evaluated after exclusion of frontalis muscle function. results: mean age was 39.1±5.9 years and female to male ratio wa...

conclusions postural stress among female machinists can increase the level of si to fairly risky and dangerous. also, changes in rating hand/wrist qec scores with hand/wrist si score were proportional in the studied samples. the si can increase under the influence of noise above 85 db, although it is not statistically significant. results there was no significant difference between work experie...

a 50-year-old lady presented with bloody vomiting and melena since four days prior to admission. her medical history was significant only for hypertension which was controlled by a 5 mg daily dose of amlodipine. she occasionally took nsaids. on admission, the physical exam revealed only mild tachycardia and pallor. hemoglobin was 9.7 g/dl, which subsequently declined to 7.9 g/dl. the first uppe...

conclusions the potential risk and prevalence of ulmsds among computer users of medical sciences university were less than those of technical-engineering university due to following ergonomic principles. rula found to be a proper method for the assessment of the ergonomic risk factors of the ulmsds in order to prevent such disorders. background along with widespread use of computers, work-relat...

background: coeliac disease (cd) is characterized by malabsorption resulting from inflammatory injury to the mucosa of the small intestine by an inappropriate immune response to dietary gluten proteins. the aim of this study was to assess the prevalence of cd in our endoscopy unit by taking routine duodenal biopsies during upper gi endoscopy. materials andmethods: nine hundred and thirteen pati...

congenital lobar emphysema is a rare cause of respiratory distress during infancy which is cured by surgery. we are reporting three cases of congenital lobar emphysema with different presentations of the disease. chest x-ray was the basis of diagnosis but confirmatory lung computerized tomography was also used. the emphysematous lobe was left upper lobe in two infants and right upper and middle...

horse shoe shaped lipoma of the upper extremity is a very rare entity. we present a case of 45 years old female who presented with painless progressive swelling over the distal forearm and tingling and numbness over the ulnar nerve territory. mri and surgical exploration showed a horse shoe shaped multilobulated lipoma encasing the distal ulna. the mass was excised in toto, and the sensory alte...

most of the ingested foreign bodies pass uneventfully through the gastrointestinal tract. however, long and rigid foreign bodies are associated with an increased risk of gastrointestinal impaction, perforation, and bleeding. spontaneous passage of a toothbrush has not been reported till date and the technique of its removal is a curiosity for surgeons. endoscopy is a recommended technique for t...