منابع مشابه
Indoor radon in Tunisian spas
Indoor radon concentrations were measured in four well-known spas of Tunisia using nuclear track detectors. The radon concentrations in these spas were found to be in the range of 19 − 870 Bq.m-3. The equilibrium factor F between radon and its progeny was found to vary in the range of 0.2 0.5, depending upon the ventilation rates within the buildings of the spas. Using the exposure-dose convers...
متن کاملThermal Springs and Spas in Poland
Geothermal waters from springs and wells are currently used in eight spas and water centers in Poland. These resorts have a long and interesting history, being an important part among all the health spas in the country. The demand for geothermal curative and recreation services offered in spas constantly increases. The paper presents several cases of geothermal resorts and some examples of init...
متن کاملVisitors Unchained
Traversing and transforming abstract syntax trees that involve name binding is notoriously difficult to do in a correct, concise, modular, customizable manner. We address this problem in the setting of OCaml, a functional programming language equipped with powerful object-oriented features. We use visitor classes as partial, composable descriptions of the operations that we wish to perform on a...
متن کاملVisitors Unchained
Traversing and transforming abstract syntax trees that involve name binding is notoriously di cult to do in a correct, concise, modular, customizable manner. We address this problem in the setting of OCaml, a functional programming language equipped with powerful object-oriented features. We use visitor classes as partial, composable descriptions of the operations that we wish to perform on abs...
متن کاملHospital visitors as controls in case-control studies.
OBJECTIVE Selecting controls is one of the most difficult tasks in the design of case-control studies. Hospital controls may be inadequate and random controls drawn from the base population may be unavailable. The aim was to assess the use of hospital visitors as controls in a case-control study on the association of organochlorinated compounds and other risk factors for breast cancer conducted...
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ژورنال
عنوان ژورنال: VIRUS - Beiträge zur Sozialgeschichte der Medizin
سال: 2020
ISSN: 1605-7066
DOI: 10.1553/virus13s219