Excessive sun exposure in childhood is a critical variable influencing skin cancer risk. Nurses must teach parents how to properly protect their children from excessive sun exposures by demystifying UV radiation and teaching proper sun-protection measures. Protecting children from excessive sun exposure, while not curtailing recreation, should be the goal of all nurses caring for children.

objective: potato is the fourth important food crop after wheat, rice and maize. shrinkage  of  food  materials  has  a negative  consequence  on  the  quality  of  the dehydrated product. the main objective pursued in this paper is to investigate the shrinkage amount of potato slices during drying process using vacuum-infrared method. methods: in this work, the effect of the infrared radiation...

The solar chromosphere consists of three classes which contribute differentially to ultraviolet radiation reaching the earth. We describe a data set of solar images, means of segmenting the images into the constituent classes, and a novel high-level representation for compact objects based on a triangulated spatial ‘membership function.’ Such representations are fitted in a variable-dimension M...

The behavior of the ”constants”, G, c, h̄, a, e, mi and Λ, considering them as variable, in the framework of a flat cosmological model with FRW symmetries described by a bulk viscous fluid and considering mechanisms of adiabatic matter creation are investigated. Within two models; one with radiation predominance and another of matter predominance, this behavior are studied.

and Key Points 1. Exposure to many environmental agents is associated with an increased incidence of certain malignancies, although causation is usually difficult to prove. 2. Certain chemicals, infections (parasitic, viral, and bacterial) and ionizing radiation are known carcinogens. 3. Variable genetic susceptibility to carcinogenesis is apparent. 4. Up to two-thirds of human cancers are beli...

Introduction The leukemogenic effect of ionising radiation has been well established for high-dose exposure. In contrast, the risk associated with natural radiation exposure still needs to be documented. Ecological studies have suggested a positive association between indoor radon concentration and childhood leukaemia, which has not been confirmed by case-control studies. The studies that inves...

There is growing evidence that some variable high-energy γ−ray sources are associated with pulsar wind nebulae. We review the current status of X-ray and radio studies of the sources most likely to be significant emitters above 100 MeV. The assumption of the γ−radiation arising from synchrotron processes puts a lower limit on the magnetic field and suggests there may be significant doppler boos...

West African dust aerosol plumes are the most wide spread, persistent and dense [31]. The processes which are responsible for the dust uplift are highly variable in time and space with an annual peak during summer [10, 31]. Mineral dust particles affect the atmospheric radiation budget directly (e.g. [14, 42]) and indirectly (e.g. [16]). The indirect aerosol affect and the scattering of solar r...