in recent years, the application of composite materials in aircraft and space vehicle structural components has become increasingly popular. preventing failure of composite structural systems has been an important issue in engineering design. due to the lack of through-the-thickness reinforcement, structures made from laminated composite materials and adhesively bonded joints are highly suscept...

A specimen transport audit was performed at a routine and reference laboratory. Over the survey period (1986-89) the percentage of specimens received and assessed as hazardous (inadequately packed, misidentified, or contaminated by leakage) fell significantly from 12.0 to 2.8%. Specimen transport audit identified technical and logistical faults associated with sample transmission. It is conclud...

he increasing trend toward ambulatory care, home healthcare, nursing home care, and other alternate sites, has created variations in laboratory services and increased probability of medical errors. As an example, in order to increase laboratory volume, laboratory administrators have had to redirect blood collection services to outlying home and clinic settings via contracts with various physici...

HYPOTHESIS Specimen mammography is not beneficial in the management or outcome of patients undergoing image-guided needle-localized breast biopsies. DESIGN A retrospective study of consecutive patients who underwent needle/dye-localized breast biopsies between January 1, 1993, and December 31, 1995. SETTING National Cancer Institute (Bethesda, Md)-designated comprehensive cancer center. P...

man, set. 32, an old soldier, who had suddenly dropped down dead. No history of previous illness could be obtained. The heart was very much enlarged as seen in situ at the post-mortem, the enlargement being chiefly confined to the base. On opening the heart it was seen that this enlargement was not due to hypertrophy, but to a tumour of the septum. This tumour on examination was found to be an ...

Objective: Among the various impression materials, for alginate tear strength is probably more important than the compressive strength. The tear strength is important when an impression involves a mechanical undercut and/or lacks bulk strength to resist tearing. This study evaluated tear strength of Iralgin and compared it with tear strength of Alginoplast. Methods: In this invitro experime...

a vermiform specimen taken from a 10-year-old boy patient with the chief complain of sneezing, coughing and nasal dis-charge with a history of consumption of fast snack in the day before and liver of sheep in two weeks ago was referred for diagnosis to the helminth taxonomy laboratory, dept. of mdical parasitology and mycology, school of public health, tehran university of medical sciences, ira...