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Worldwide, breast cancer (BrCa) is currently the leading cause of deaths associated to malignant lesions in adult women. Given that some studies have mentioned that peritumoral adipocytes may contribute to breast carcinogenesis, present work sought to quantitative evaluate the morphometry of these cells in a group of adult women. Three thousand six hundred sixty four breast adipocytes, that came from...
This paper describes the development of a type-N coaxial microcalorimeter and its associated transfer standard, which together are now used as the Mexican Primary Standard for Microwave Power from 0.05 GHz to 18 GHz. The comparison method used to evaluate the microcalorimeter correction factor is presented, and the calibration results for the effective efficiency of the transfer standard are shown...
This paper reports a methodology followed to characterize an open-area Antenna Calibration Test Site (CALTS). Guidelines for validating a CALTS are given in CISPR 16-1-5 edition 06-2012 standard. The method employed, however, provides an extended characterization of the site by applying the validation criteria of the standard at nine locations on the site instead of only one. Two validation criteria...
This paper describes the development of a 10 MHz to 18 GHz radiofrequency power calibration transfer system based on the direct comparison technique using a resistive power splitter. This system is capable of measuring thermistor and thermoelectric based power detectors. The measurement uncertainties are thoroughly evaluated for the complex quantities in terms of magnitude and phase by following the...
Scattering parameter measurements are very important in fields such as telecommunications. A description of the establishment of the Mexican national standards for providing traceability to these measurements is presented in this work
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