We collected surface ocean water, snow, grab ice, ice core, melt pond and ice-rafted sediment (IRS) from 5 stations during the Western Arctic US GEOTRACES cruise (USGCG Healy; August 10 – October 7, 2015) analyzed for 210 Po (T 1/2 = 138.4 days) Pb 22.3 years) in dissolved particulate phases (snow, seawater) to investigate Po: disequilibria these matrices. Thirteen aerosol samples, using a larg...

New Experiments with Spheres-Gas (NEWS-G) is a dark matter direct detection experiment that will operate at SNOLAB (Canada). Similar to other rare-event searches, the materials used in detector construction are subject stringent radiopurity requirements. The features 140-cm diameter proportional counter comprising two hemispheres made from commercially sourced 99.99% pure copper. Such copper wi...

Telah dilakukan pengukuran konsentrasi radionuklida ( 226 Ra, 210 Pb, Po dan 40 K) pada tembakau rokok di Kota Padang menggunakan spektrometer gamma RAD7. Penelitian ini bertujuan untuk menentukan mengestimasi dosis efektif tahunan yang diterima perokok. Pengukuran 3 merek rokok, diawali dengan preparasi sampel, kalibrasi RAD7, serta radionuklida. Hasil penelitian menunjukkan bahwa Ra terukur s...

background: tea is one of the most popular beverages all over the world which is prepared from the leaves of a shrub camellia sinensis. eastern black sea region of turkey which account for around 100% of all tea production in turkey was among the areas contaminated by chernobyl accident. materials and methods: a comprehensive study was planned and carried out to determine the level of gross α a...