OBJECTIVES In this study, we evaluated the efficacy of using gonadal shielding in pediatric patients. PATIENTS AND METHODS Between October 2011 and February 2012, 1137 pelvic X-rays of 675 consecutive patients (323 boys, 352 girls; mean age 6.8 years; range 6 month to 17 years) in our hospital were evaluated in terms of gonadal shielding use by a team including an orthopedist, a gynecologist ...

background: changes in body composition may be used for monitoring progression/ regression of a disease. prompt γ-rays in vivo neutron activation analysis (ivnaa) has been widely used for the measurement of body composition in recent years. objective: in this paper, we tried to improve the safety of ivnaa operator. methods: the most important factor for reducing the operator receiving dose is t...

This paper evaluates a novel receiver design concept that implements photovoltaic (PV) cells on heat shields and bellows shields to capture optical spillage from central receiver and parabolic trough concentrating solar power (CSP) plants, generating electricity from concentrated light that would otherwise be wasted. A combination of conventional silicon and multi-junction concentrating PV (CPV...

OBJECTIVE To determine whether gonad shields are correctly positioned on the pelvic radiographs of children with slipped capital femoral epiphysis. DESIGN Retrospective study of radiographs taken of children treated by in situ pinning of slipped capital femoral epiphysis between 1 January 1983 and 31 December 1988. SETTING Three teaching hospitals in north west England. PATIENTS 32 patien...

Turning motor into anchor A motor in the fl y oocyte is turned into a static anchor to hold its polarity-inducing cargo in place, say Renald Delanoue, Bram Herpers, Jan Soetaert, Ilan Davis (University of Oxford, UK), and Catherine Rabouille (University Medical Centre Utrecht, Netherlands). The switch from motor to anchor is thrown by an RNA-binding protein called Squid. Squid mutants were orig...

The results of substantiation the improved technology for manufacturing frequency-selective electromagnetic shields are presented. improvement this was ensured by following: 1) inclusion elements in form classical Archimedes spirals, formed from foil materials, into volume manufactured to ensure properties such shields; 2) fixing specified thermal pressing. indicated features determine main adv...

BACKGROUND AND AIM: Protective equipment, such as lead aprons and thyroid shields, is effective in reducing patient radiation. This study was conducted for evaluation the use of thyroid shields and lead aprons in dental offices, in Kerman, Iran, in June 2014.METHODS: In this descriptive-analytical study, 106 dental offices with active X-ray machines were evaluated in Kerman. The information was...