Bierzychudek M.E.,Instituto Nacional Of Tecnologia Industrial |
Jones G.R.,U.S. National Institute of Standards and Technology |
Elmquist R.E.,U.S. National Institute of Standards and Technology
Review of Scientific Instruments | Year: 2014
We describe a cryogenic two-terminal high-resistance bridge and its application in precision resistance scaling from the quantized Hall resistance (QHR) at RH = RK/2 = 12 906.4035 Ω to decade resistance standards with values between 1 MΩ and 1 GΩ. The design minimizes lead resistance errors with multiterminal connections to the QHR device. A single variable voltage source and resistive ratio windings are utilized to achieve excellent dynamic stability, which is not readily obtained in low-current measurements with conventional cryogenic current comparators (CCCs). Prototypes of this bridge have been verified by a successful international comparison of high-resistance scaling using two-terminal CCCs in the national metrology institutes of Argentina, Mexico, and the United States. © 2014 AIP Publishing LLC.
Gomez G.,Instituto Nacional Of Tecnologia Industrial
IEEE Latin America Transactions | Year: 2013
The international Vocabulary of metrology defines traceability like the property of a measurement result by which the measurand can be related to a reference by means of an uninterrupted and documented chain of comparisons, each one of which contributes to the measurement uncertainty. Basing on this definition we can speak of traceability like the succession of patterns and calibrations that relate a measurement result to a reference. The present work shows the importance of these concepts applied in the area of electromedical equipment, more specifically in the calibration of electrosurgery equipment. In this work also discuss the operation of electrosurgical equipment, the parameters being to calibrate by means of analyzers, how they instruments make the measurement of the parameters previously mentioned and the methods of calibration. © 2003-2012 IEEE.
Bernini M.B.,Institute Fisica Rosario |
Federico A.,Instituto Nacional Of Tecnologia Industrial |
Kaufmann G.H.,Institute Fisica Rosario |
Kaufmann G.H.,Centro Internacional Franco Argentino Of Ciencias Of La Informacion Y Of Sistemas
Applied Optics | Year: 2011
We propose a phase measurement technique to retrieve optical phase distributions coded in noisy temporal speckle pattern interferometry signals presenting regions of adjacent low-modulated pixels, which is based on the bidimensional empirical mode decomposition and the Hilbert transform. It is shown that this approach can effectively remove noise and minimize the influence of large sets of adjacent nonmodulated pixels located in the time series of speckle interferograms. The performance of the phase retrieval approach is analyzed using computer-simulated speckle interferograms modulated with a temporal carrier. The results are also compared with those given by a technique based on the one-dimensional empirical mode decomposition. The advantages and limitations of the proposed approach are finally discussed. © 2011 Optical Society of America.
Agency: Cordis | Branch: FP7 | Program: CP-FP-SICA | Phase: KBBE.2011.2.5-02 | Award Amount: 3.97M | Year: 2012
Food security is a major concern for all countries in the face of population increase and diminishing energy and water supplies. Over one billion people in low and middle income countries suffer from malnutrition. To meet the UN Millennium Development Goals to eradicate hunger and poverty, it is essential to reduce post harvest losses, including in the fisheries sector. The overall objectives of SECUREFISH are to strengthen capacity in low cost technology; to improve the preservation of existing fish supplies; to utilise waste and bycatch to produce value-added products; to develop an integrated quality management tool and finally to test the developed technology and quality management tool in different real third country conditions. There are six work packages (WP). WP1 will ensure the efficient management of the project. WP2 will develop low cost innovative processing tools based on traditional technology for preserving fish including a solar tunnel drier, a modified solar assisted extruder and fast freezing/ continuous atmosphere freeze-drier (CAFD). In WP3, underutilised bycatch and waste by-products of fish processing will be recovered and converted to high value products. WP4 will develop an effective total quality management tool (safety and risk assessment; HACCP quality cost and traceability, nutritional and eating quality and carbon footprint) of three fish product chains (solar dried, extruded and frozen/CAFD) which will be tailored to suit local needs. The technological advances (WP2) and quality management tool (WP4) will be evaluated in the three fish product chain case studies in Africa (Kenya, Namibia, Ghana), Asia (India and Malaysia) and Latin America (Argentina) to include different economic, cultural and social conditions. The case studies involve stakeholders including SMEs to ensure sustained implementation of project results. WP6 details a strategy for education, training and dissemination to widely promote the results and guidelines.
Agency: Cordis | Branch: FP7 | Program: CP-FP-SICA | Phase: NMP.2011.2.3-1 | Award Amount: 4.15M | Year: 2012
The EU fruit juice and nectars market stood at a healthy 11.3 billion litres in 2009. A 60% of total volume consumed is packaged with carton, a 25% with PET and the remainder is packaged with glass (13%) and other packaging formats (2%).Environmental sustainability concerns are rising on the public agenda, becoming even more relevant to the consumers.The EU juice and nectars industry is aware of its important role and responsibility, making use of best practice which involves full LCA to reduce both carbon and water footprint. Juices and nectars producers have sought to provide the most environmentally friendly packaging available.Meanwhile, packaging innovations is getting ahead of developments in recycling.It is illogical that VAT as high as 20% to 25% can be applied to packaged fruit juice.There is a need to join efforts between packaging companies, recycling operators and governments to maximise the latest technology. The use of conventional polymeric materials petrochemical based in packaging, represents an important environmental impact and waste generation due to their non-biodegradability. Some alternative materials obtained from renewable resources can be found in the market. These materials fulfil the environmental concerns but they show some limitations in terms of performance like processing by injection and thermal resistance joined to high associated costs. This situation makes necessary research to improve their added value. The aim of PHBOTTLE project is to develop a new BOTTLE (body, cap & sleeve) from biodegradable material, concretely PHB, which will be obtained by fermentation of wastewater from juice processing industries (renewable biogenic resource); optimising eco and energy efficiency in the material production and processing. The new bottle will be used for juice packaging with a competitive price, although other applications will be also studied (non-food packaging such as cosmetics and non-packaging applications)