Résumé Research Application Summary Maize streak virus (MSV) diversity in Uganda and the assessment of gene silencing as a tool for development of resistance to MSV Owor, B.E.1, Thompson, J.A.1 & Shepherd, D.M.1 1Department of Molecular and Cell Biology, University of Cape Town, Private Bag, Rondebosch 7701, South Africa Corresponding author: [email protected] Through an extensive survey con...

Mild heat stress promotes thermotolerance and protection against several different stresses in aquatic animals, consequences correlated with the accumulation of heat shock protein 70 (Hsp70). The purpose of this study was to determine if non-lethal heat shock (NLHS) of the Asian green mussel, Perna viridis, an aquatic species of commercial value, promoted the production of Hsp70 and enhanced it...

Pesticides used in agriculture can have hazardous effects on aquatic organisms, and amphibians are even more threatened than other aquatic vertebrates. Maneb is widely used to control fungal diseases on crops, fruits, and vegetables. The aim of this study was to investigate the acute toxic effects of maneb on the common (Bufo bufo) and green toad (Pseudepidalea viridis) tadpoles. Tadpoles at th...

Abstract This study aims to estimate the effective radiation dose and organ from head CT procedures. It was conducted in three main private hospitals Khartoum State-Sudan, using Toshiba machines with 64 slices. The total number of patients included this 142 (82 males 60 females). were calculated by Expo software. slightly varied among according gender age. for female (5.99 mSv) higher than that...

Algae of the genera Dunaliella and Asteromonas can maintain extremely high concentration gradients (>10(4)) of glycerol between the intracellular space and the medium. This unique ability is highly temperature-dependent. Treating the algae for several minutes at temperatures exceeding 60 C causes complete release of all the internally held glycerol; 50% release occurs around 50 C, but essential...

After the 2011 Fukushima Daiichi nuclear power plant accident, little information has been available on individual doses from external exposure among residents living in radioactively contaminated areas near the nuclear plant; in the present study we evaluated yearly changes in the doses from external exposure after the accident and the effects of decontamination on external exposure. This stud...

The Nuclear Regulatory Commission is amending its regulations to make minor corrections and clarifying changes to the NRC's 10 CFR Part 20, "Standards for Protection Against Radiation." The final rule is also intended to conform other regulations with the Commission's 1991 revised radiation protection requirements. In addition, the final rule includes a minor policy change that raises the monit...

To evaluate current environmental contamination and contributions from internal and external exposure due to the accident at the Chernobyl Nuclear Power Plant (CNPP) and nuclear tests at the Semipalatinsk Nuclear Testing Site (SNTS), concentrations of artificial radionuclides in edible mushrooms, soils and stones from each area were analyzed by gamma spectrometry. Annual effective doses were ca...

Crystals of the reaction center (RC) from Rhodopseudomonas sphaeroides with the space group P2(1)2(1)2(1), have been studied by x-ray diffraction. The Patterson search (molecular replacement) technique was used to analyze the data, with the structure of the reaction center from Rhodopseudomonas viridis as a model system. A preliminary electron density map of the reaction center from R. sphaeroi...