Search results for "Paper based"
showing 5 items of 5 documents
Development and Evaluation of Paper-Based Devices for Iron(III) Determination in an Advanced Undergraduate Laboratory
2020
We describe a paper-based microfluidic device for iron(III) assay in an applied instrumental analysis laboratory. Simple and convenient devices were fabricated by the students using patterning of f...
Electrochemical sensor for phosphate ions based on laser scriber reduced graphene oxide
2022
This preliminary work shows a new and innovative way to produce laser scribed reduced graphene oxide (LSGO) electrodes using different porous substrates (ranging from paper to plastic and fabric). The obtained electrodes were also tested as electrochemical sensors towards the detection of phosphate ions in water. To obtain the electrodes, a water suspension of GO was filtered on top of substrate (such as Whatman® filter paper) and a complete sensor was obtained from its reduction using a CO2 laser. The electrode is composed of working and counter electrodes made of LSGO and a reference electrode of a Ag/AgCl obtained by using a commercial AgCl conductive paste. Phosphate ions were detected …
Economical Issues Regarding the Implementation and Functioning of the Common Catalogue of Varieties of Agricultural Plant Species
2013
Abstract Economical constraints regarding the full implementation and functioning of the common catalogue on plant genetic resources for food and agriculture (PGEFA) are discussed in this paper based on the assessment of the current European Union regulatory framework. Based on this article's results new financial mechanisms should be developed at the national level for further responding to the European requirements including measures regarding the conservation varieties. This assessment is further supporting the need for developing and implementing new financial mechanisms in the support of the poor rural populations as well as for small farmers in harmony with commercial agriculture.
Paper-based vs computer-based exams in CS1
2016
In this study, we examine the "test mode effect" in CS1 exam using the Rainfall problem. The participants started working with pen and paper, after which they had access to a computer, and they could rework their solution with a help of a test suite developed by the authors. In the computer- based phase many students were able to fix the errors that they had committed during the paper-based phase. These errors included well-known corner cases, such as empty array or division by zero.
Escenarios para una Empresa Socialmente Responsable en e Posconflicto Colombiano (Scenarios for a Socially Responsible Company in the Colombian Post-…
2015
Spanish Abstract: En 2012 el Gobierno colombiano y las FARC, comenzaron unos dialogos para ponerle fin a la confrontacion armada de mas de 50 anos mediante la firma del “Acuerdo para la terminacion del conflicto y la construccion de una paz estable y duradera”. ?Como sera el escenario del postconflicto para los alzados en armas y toda aquella masa de ciudadanos y campesinos que aun no tienen unas condiciones dignas de vida? Este trabajo fundamentado en la teoria de la accion comunicativa, en la prospectiva, en la teoria del derecho positivo y en las bases conceptuales de una responsabilidad social de las organizaciones acorde con la justicia social, examina diversas posibilidades de una vid…