The tool of immunological diagnosis denominated ELISA (Enzyme Linked Immuno-Sorbent Assay) it is probably the most used colorimetric test and it evaluates the compatibility antigen-antibody.
The development of a portable device and low cost that it is allows analyzing the ELISA plate ("in situ"). It will suppose one immediately identification of the disease and therefore a faster performance to palliate this disease. In addition to the being to low cost it will be more accessible for the population, especially of the underdeveloped countries population, where they have a depressed immunological systems as a result of the bad general condition of life; and this diseases will cause them serious injuries or even the death.
Another reason, but not less important it is that the presence of this disease cause great lost economic, with respect to a primary production sector like it is the farming sector, that produce a great social impact.
This paper presents a new portable instrument for read ELISA plates, based of the colour level (this measurement will take place in photodiodes) and using low-cost components.
Currently, plates are measured either photometrically which is costly and no portable or manually which is unacceptably subjective and dependent on training and illumination. This work shows a technique to improve the efficiency of clinical interpretation ELISA diagnostic plates.

The aim of this paper is to present a pioneer technical course in metrology in the Latin America. In the 90's, Brazil started to open its market to the world. Qualified human resources in metrology were needed and they were not available enough. A metrology technical course was established in 1998 by agreement among the National Institute of Metrology, Normalization and Industrial Quality (Inmetro), the General Office of Education of the Rio de Janeiro State (SEE-RJ) and the secondary school "Colégio Estadual Círculo Operário" (CECO), maintained by the government of the State of Rio de Janeiro, Brazil. The Inmetro/SEE-RJ/CECO technical course, during 11 years of existence, became a reference course in the region where it is located, and it can be considered an instrument of renewal and increase of the number of professionals that work in the metrology career.

The monitoring of air pollution and air emissions has suffered a great evolution during last decade in Portugal. In relation with this evolution, the necessary metrological control for the measurement equipments increased substantially, as required from the European Norm EN ISO/IEC 17025.
This work compares two alternative methodologies to calibrate equipments for monitoring air pollutants emitted from ducts and stacks to the atmosphere. The traditional method, by comparing the calibration gases, Certified Reference Materials (CRM) with the equipment measurements and other method that consists in generate the calibration gas by dynamic dilution method from a high concentration CRM for each quantity.
The dilution systems that use Mass Flow Controllers (MFC) are very suitable on this field. They also give some technical advantages in calibration process, but a bigger expanded uncertainty is reached, influenced first by the MFC.
When comparing dynamic dilution and traditional calibration methods for some measurement reference equipments by Z' – score and E_n methods, the results were satisfactory.

Lock-in and pulse phase infrared thermography measurement techniques have been exploited for quantitative assessment of subsurface defects in a reference specimen made of Plexiglas. Radiometric thermal images were post-processed using a contrast approach in the frequency domain, allowing defect depth location to be resolved with a relative combined standard uncertainty of about 7% for thicknesses above 3 mm. Conversely, significant radial heat diffusion next to the boundary of the discontinuity made accurate sizing of deeper subsurface defects more difficult. The obtained results demonstrate the potentiality of active thermography as a fast, powerful contactless NDT measurement tool.

This work presents a method to evaluate measurement results of calibrations of an itinerary energy standard (Wh) performed by laboratories that participate in an interlaboratorial comparison program. It is based in the methodology of linearization of the normal function distribution. This tool compares data of a laboratory under analysis to data of the reference laboratory using beta values of each laboratory within a specific period of the program. If any of these measures is outside stipulated ranges it is a sign that the laboratory under analysis needs to investigate its process.