Exposure to radioactive rocks from the Egyptian eastern desert attenuates the efficiency of the immune organs and induces apoptosis of blood lymphocytes in rat model.

Exposure to ionizing radiation emitted from natural sources induces many health hazards. The response to ionizing radiation involves a number of mediators including inflammatory cytokines and free radicals which mediate immunosuppression. The present study aimed to monitor the impact of exposure to natural radioactive rocks from the Egyptian eastern desert on the primary immune organs.

Considerable radioactivity levels in the granitic rocks of the central areas of the Eastern Desert, Egypt.

The distribution of the natural radioisotopes U, Ra, Th, and K in addition to their radiological parameters in granitic rock samples from five different localities (Gebel El-Missikat, Gebel El-Gidamy, Gebel Ria El-Garra, Gebel El-Aradiya, and Gebel Kab Amira) in the central area of the Eastern Desert, Egypt, was measured using high purity germanium (HPGe) detector-based γ-spectrometry. The average activity concentrations of U, Ra, Th, and K in all five studied areas are higher than the corresponding global average values. The highest average activity concentrations of U and Ra were observed in Gebel El-Missikat, whereas the highest average value of Th activity concentration was found at Gebel El-Gidamy, and the highest concentration of K was obtained at Gebel El-Aradiya.

Assessment of natural radioactivity levels in soil samples from some areas in Assiut, Egypt.

The natural radioactivity of soil samples from Assiut city, Egypt, was studied. The activity concentrations of 28 samples were measured with a NaI(Tl) detector. The radioactivity concentrations of (226)Ra, (232)Th, and (40)K showed large variations, so the results were classified into two groups (A and B) to facilitate the interpretation of the results.

Considerable hazards produced by heavy fuel oil in operating thermal power plant in Assiut, Egypt.

Heavy fuel oil and ash samples were collected from the Assiut thermal power plant in Egypt and subjected to gamma spectrometry analysis for natural radioactivity contents. Considerable results were observed where the ash contains nearly 1,000 times natural radionuclides more than raw oil. The results were confirmed by measuring the samples via using different devices in different institutions.

Manometric measurement of lacrimal sac pressure after endoscopic and external dacryocystorhinostomy.

Objective: To evaluate endoscopic and external dacryocystorhinostomy (DCR) using a quantitative, objective functional tool.

Material And Methods: This study comprised 58 cases divided into 4 groups: healthy controls; patients suffering from epiphora due to nasolacrimal duct (NLD) obstruction; patients who had undergone endoscopic DCR; and patients who had undergone external DCR. The lacrimal sac pressure was measured during blinking, forced blinking and the Valsalva maneuver using a polygraph.