نتایج جستجو برای: radiation hazards
تعداد نتایج: 276161 فیلتر نتایج به سال:
INTRODUCTION There are no adequate data to determine whether intensity-modulated radiotherapy (IMRT) is superior to three-dimensional conformal radiotherapy (3DCRT) in the treatment of non-small cell lung cancer (NSCLC). This meta-analysis was conducted to compare the clinical outcomes of IMRT and 3DCRT in the treatment of NSCLC. METHODS No exclusions were made based on types of study design....
Integrating sensors with autonomously navigating robots makes them useful for many applications: delivery of packages, components, and supplies; monitoring wireless networks, radiation, or HVAC; and responding to emergencies and hazards. MobileRobots' intelligent, autonomous mobile platforms perform these and many other tasks. A result of nearly eleven years of development, the company's next-g...
An autopsy may subject prosectors and others to a wide variety of infectious agents, including bloodborne and aerosolized pathogens such as human immunodeficiency virus, hepatitis B and C viruses, and Mycobacterium tuberculosis. Other hazards include toxic chemicals (e.g., formalin, cyanide, and organophosphates) and radiation from radionuclides used for patient therapy and diagnosis. These ris...
BACKGROUND The impact of adjuvant radiation in patients with atypical meningioma remains poorly defined. We sought to determine the impact of adjuvant radiation therapy in this population. METHODS We identified 91 patients with World Health Organization grade II (atypical) meningioma managed at Dana-Farber/Brigham and Women's Cancer Center between 1997 and 2011. A propensity score model incor...
Although exposure to electromagnetic radiation in radiofrequency range has caused a great deal of concern globally, radiofrequency radiation has many critical applications in both telecommunication and non-communication fields. The induction of adaptive response phenomena by exposure to radiofrequency radiation as either increased resistance to a subsequent dose of ionizing radiation or resista...
A “breadboard” model of the proposed satellite infrared spectrometer for the measurement of atmospheric temperature profiles was used in two experiments a t ground level. These were designed to demonstrate the feasibility of the instrument and to investigate some of the hazards involved in inverting the radiation integral. I t is shown in the second experiment that realistic temperature profile...
Erythema ab igne (EAI), also known as "toasted skin syndrome" or "heatinduced circumscribed dermal melanosis", presents with pigmented reticular skin lesions with telangiectasias due to prolonged thermal radiation exposure. This article describes a 16-year-old male patient with EAI due to the use of a thermal pillow, and discusses a potential causative agent of EAI. The potential hazards of mis...
Our children come in contact with a wide variety of environmental hazards every day. The dangers lurk in the foods they eat, the water they drink and the air they breathe. Substances like mercury, lead and some pesticides and solvents can damage a child’s nervous system. PCBs and dioxin can disrupt a child’s hormones. Radiation, asbestos, arsenic and dioxin can cause cancer in children. Sulfur ...
The potential ocular hazards associated with the use of dental curing lights were evaluated. Recommendations are provided for precluding exposure of personnel to hazardous levels of optical radiation. Users should not stare directly into the dental curing lights at distances shorter than 25 cm (which would not be a likely event). Eye protectors which filter wavelengths below 500 nm may be desir...
The potential impacts of climate change (CC) on Occupational Health and Safety (OHS) have been studied a little in tropical countries, while they received no attention in northern industrialized countries with a temperate climate. This work aimed to establish an overview of the potential links between CC and OHS in those countries and to determine research priorities for Quebec, Canada. A narra...
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