منابع مشابه
An Improved Shashlyk Calorimeter
Shashlyk electromagnetic calorimeter modules with an energy resolution of about 3%/ √ E (GeV) for 50−1000 MeV photons has been developed, and a prototype tested. Details of these improved modules, including mechanical construction, selection of wave shifting fibers and photo-detectors, and development of a new scintillator with improved optical and mechanical properties are described. How the m...
متن کاملDesign and Use of Aneroid Bomb Calorimeters
(1) The object of a bomb calorimeter is to absorb the heat released from an accurately measured amount of chemical reaction and convert it into a temperature rise which can be measured with corresponding accuracy. Questions associated with the chemical reaction are often difficult, but will not be discussed here. This paper is concerned with the purely physical questions associated with the tem...
متن کاملAn optical differential scanning calorimeter cryomicroscope.
An optical-DSC system was designed, built, tested, calibrated and verified to incorporate into a single device the capability for simultaneous optical cryomicroscopy and differential scanning calorimetry (DSC). This instrument can be used to obtain both visual and thermal data for an individual specimen subjected to a defined freezing and thawing protocol with very little compromise in quality ...
متن کاملEvaluating the accuracy of an aneroid sphygmomanometer in a clinical trial setting.
BACKGROUND The mercury sphygmomanometer, the "gold" standard for blood pressure measurements, has been gradually phased out in many institutions because of environmental concerns. Our on-going clinical trial compared the use of mercury vs. aneroid sphygmomanometers, before implementing a study-wide transition to the aneroid sphygmomanometer. METHODS The Diabetes Prevention Program Outcomes St...
متن کاملAssessing blood pressure accuracy of an aneroid sphygmomanometer in a national survey environment.
BACKGROUND The "gold standard" employed for obtaining blood pressure (BP) for all the National Health and Nutrition Examination Surveys (NHANES) has been the mercury sphygmomanometer (HgS). Because of environmental concerns, there is a need to explore an alternative to HgS. METHODS We compared the accuracy of the Welch Allyn 767 wall aneroid sphygmomanometer (AnS) to the HgS in children and a...
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ژورنال
عنوان ژورنال: Bulletin of the Bureau of Standards
سال: 1915
ISSN: 0096-8579
DOI: 10.6028/bulletin.271