Diversity Analysis of Rotifers from Temporary Spring Pools of Jallo Park, Lahore, Pakistan

Temporary pools are relatively small water bodies with limited resources and are seasonally available. These freshwater bodies are rich source of microbial and planktonic lifeObjective: This survey was conducted to find out the presence of rotifers in temporary pools formed inJallo Park established in 1978 and explore their density and diversityMethods: Sample collection was done from ten pools with the help of a planktonic mesh. The counting was performed with a Sedgwick- Rafter chamber. Diversity indices like Shannon Weaver index etc. Were applied Results: In present study 27 rotifer species belonging to 14 genera were identified. The highest diversity and density was shown by Brachionus and Lecane. There was even distribution in each pool. Results of ANOVA showed statistically significant difference in population density and diversityConclusions: This study has presented a guideline to find out rotifer diversity which could be present in any water reservoir like temporary pool.

Evaluation of Nuclear Reaction Cross Sections for the Production of Radioisotopes of Yttrium for Medical Application

Evaluation of nuclear reaction cross section data was performed for the production of radionuclides of yttrium i.e. 86,87,88Y for medical applications via charhged particle induced reactions on different targets of 86.87,88Sr, 85Rb and natZr. Nuclear reaction cross sections for the production of these radionuclides were also measured experimentally via deuteron induced reaction on natural zirconium target up to 50 MeV beam energy by stack foil activation technique followed by gamma ray spectroscopy at Lawrence Berkeley National Lab, USA. A comprehensive analysis of all the experimental data obtained during actual experiment, EXFOR database and literature was done. The nuclear model calculations were performed by using nuclear model codes i.e. ALICE-IPPE, TALYS 1.6 and EMPIRE to check the reliability and consistency of experimental data. The recommended cross sections were generated based on our evaluation methodology. Yield of each radionuclide was calculated from the recommended cross sections. Medical applications of these radionuclides demand that they should be in a pure form, free from any radionuclidic impurity. So analysis of radionuclidic impurities associated with each reaction was performed based on our recommended cross sections and TALYS calculations. The recommended cross sections, yield and accompanying impurities are used for optimization of different charged particle induced reactions for the production of 86,87,88Y.