BACKGROUND Despite resection followed by adjuvant radiotherapy, high-risk cutaneous squamous cell carcinomas of the head and neck region (SCCHN) often recur. Because adjuvant concurrent chemoradiation reduces recurrence among high-risk mucosal SCCHN, we sought to understand its efficacy among high-risk cutaneous SCCHN. METHODS We conducted a retrospective cohort study of patients with cutaneo...

the territory of serbia is vulnerable to various types of natural hazards and the risk is not equal across the entire territory; it varies depending on the type of hazard and the expected potential for damage. the first aim of this research was to determine the geographical distributions of the major types of natural hazards. seismic hazards, landslides, rock falls, floods, torrential floods...

In this chapter, there is insufficient space to exhaustively review the research which has been carried out on internal radionuclide effects. I hope only to highlight evidence which shows that internal radionuclides cannot be assessed by the current radiation risk model, and to suggest some research directions that may enable a new model to be developed, one which more accurately quantifies the...

On-line educational means were developed, which assist training in Radiation Protection and in Accelerator Technology Safety, in Radiotherapy Departments and Industrial Sterilization Facilities. Hypertext and multimedia courseware are gaining importance in University and Professional Education, and may partially release the teaching staff, and offer them more time to concentrate on more substan...

Ultraviolet radiation (UVR) emitted during arc welding frequently causes keratoconjunctivitis and erythema. The extent of the hazard of UVR varies depending on the welding method and conditions. Therefore, it is important to identify the levels of UVR that are present under various conditions. In this study, we experimentally evaluated the hazard of UVR emitted in gas tungsten arc welding (GTAW...

This study presents the results of ambient radioactive radiation, radiation health hazard indices and excess lifetime cancer risk estimation around radiological sections in Federal Teaching Hospital Gombe, Gombe State, Nigeria using a well calibrated Rados-200 meters Global Positioning System (Garmin 765). The mean annual outdoor equivalent dose 0.078 mSv/y. was measured. Mean effective doses 0...