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 Physics , 2013, Abstract: The removal of radioactivity from liquid scintillator has been studied in preparation of a low background phase of KamLAND. This paper describes the methods and techniques developed to measure and efficiently extract radon decay products from liquid scintillator. We report the radio-isotope reduction factors obtained when applying various extraction methods. During this study, distillation was identified as the most efficient method for removing radon daughters from liquid scintillator.
 Journal of Environmental Science and Technology , 2011, Abstract: n the cells. Scanning Electron Micrographs showed distinct cytoskeleton changes of the cell in presence of metals. Bioremedial package was developed under immobilized condition both with pure isolates as well as mixed consortia for treating heavy metal containing waste water. Efficiency of Lead removal was measured using atomic absorption spectroscopy. All the isolates were found to accumulate metals to different extent. Laboratory scale bioremediation study indicated effective lead removal by immobilized consortium as well as individual strains. The mixed consortium removed 83.68% metal from distilled water and 94.4% from Bheri water both supplemented with 5 mM lead nitrate salt, within 48 h.
 Physics , 2014, DOI: 10.1088/1674-1137/39/1/016003 Abstract: Nonlinearity of the liquid scintillator energy response is a key to measuring the neutrino energy spectrum in reactor neutrino experiments such as Daya Bay and JUNO. We measured in laboratory the nonlinearity of the Linear Alkyl Benzene based liquid scintillator, which is used in Daya Bay and will be used in JUNO, via Compton scattering process. By tagging the scattered gamma from the liquid scintillator sample simultaneously at seven angles, the instability of the system was largely cancelled. The accurately measured nonlinearity will improve the precision of the $\theta_{13}$, $\Delta m^2$, and reactor neutrino spectrum measurements at Daya Bay.
 Physics , 2010, DOI: 10.1088/1475-7516/2011/06/009 Abstract: A direct WIMP (Weakly Interacting Massive Particle) detector with a neutron veto system is designed to better reject neutrons. Two experimental configurations are studied in the present paper: one is for an Xe detector enclosed in a Gd-loaded scintillator and the other one is for an Xe detector placed inside a reactor neutrino detector. The Gd-doped liquid scintillator (or the neutrino detector) is used as a neutron veto device. The neutron backgrounds for the two experimental designs have been estimated using Geant4 simulations. The results show that the neutron backgrounds can decrease to O(0.1) events per year per tonne of liquid Xenon. We calculate the sensitivities to spin-independent WIMP-nucleon elastic scattering. An exposure of one tonne $\times$ year could reach a cross-section of about 6$\times$$10^{-11}$ pb.