منابع مشابه
Radioactivity in some sachet drinking water samples produced in Nigeria
Background: Activity concentrations of 40K, 226Ra and 228Ra were measured in some sachet drinking water samples produced in Nigeria. Materials and Methods: The measurement was done by using high-purity germanium (HPGe) detector (Canberra Industries Inc.). The measured activity concentrations for 226Ra (U-series) and 228Ra (Thseries) were used with their ingested dose conversion factors ...
متن کاملAssessment of the Natural Radioactivity and Concentrations of Some Heavy Elements in the Dust of Some Schools in Karbala, Iraq
Introduction: This study covered the assessment of the natural radioactivity levels and heavy metalsconcentration in dust samples collected from selected schools in the holy Governorate of Karbala. The purpose of thisstudy was to assess the radiological health and safety impact of dust pollution on the children going to school. Material and Methods:</...
متن کاملradioactivity in some sachet drinking water samples produced in nigeria
background: activity concentrations of 40k, 226ra and 228ra were measured in some sachet drinking water samples produced in nigeria. materials and methods: the measurement was done by using high-purity germanium (hpge) detector (canberra industries inc.). the measured activity concentrations for 226ra (u-series) and 228ra (thseries) were used with their ingested dose conversion factors to estim...
متن کاملSome problems in topology
Broadly speaking, we may say that analysis situs, or topology, deals with the properties of geometrical figures that remain invariant when the figures are subjected to arbitrary continuous transformations. There are, however, several distinct kinds of analysis situs, because there are several distinct ways of interpreting the physical notion of continuity in mathematical language. For example, ...
متن کاملSome Problems in Growing
Sugar beets are grown for sugar in 22 States—Michigan, Ohio, Indiana, Illinois, Wisconsin, Minnesota, Iowa, Kansas, Nebraska, South Dakota, North Dakota, Colorado, Montana, Texas, New Mexico, Utah, Idaho, Oregon, Washington, Arizona, Wyoming, and California. They are grown in New Mexico, Arizona, Utah, Nevada, California, and Oregon for seed. Almost 20 percent of the national sugar requirem.ent...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 1909
ISSN: 0148-0227
DOI: 10.1029/te014i001p00025