BackExaminar Artículos por departamento (cas.) "Química analítica"
Now showing items 21-40 of 48
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Micro-Capillary Coatings Based on Spiropyran Polymeric Brushes for Metal Ion Binding, Detection, and Release in Continuous Flow
(MDPI, 2018-04)Micro-capillaries, capable of light-regulated binding and qualitative detection of divalent metal ions in continuous flow, have been realised through functionalisation with spiropyran photochromic brush-type coatings. Upon ... -
Microcantilever arrays functionalised with spiropyran photoactive moieties as systems to measure photo-induced surface stress changes
(Elsevier, 2016-12)[EN] Herein we investigate the feasibility of detecting photo-induced surface stress changes using the deflection response of cantilevers. For this purpose, silicon microcantilevers have been functionalised with spiropyran ... -
Microtechnologies for Cell Microenvironment Control and Monitoring
(MDPI, 2017-06)A great breadth of questions remains in cellular biology. Some questions cannot be answered using traditional analytical techniques and so demand the development of new tools for research. In the near future, the development ... -
Multianalytical Approach to explain the darkening process of hematite pigment in paintings from ancient Pompeii after accelerated weathering experiments
(Royal Society of Chemistry, 2013-10-17)[EN] In this paper, recently excavated fresco painting fragments from the House of Marcus Lucretius (Pompeii) and not exposed to the atmosphere since the eruption of the Mount Vesuvius were subjected to a controlled SO2 ... -
Multispectroscopic and Isotopic Ratio Analysis To Characterize the Inorganic Binder Used on Pompeian Pink and Purple Lake Pigments
(ACS Publications, 2016-05-18)Because of the fact that pigments are not ubiquitous in the archeological record, the application of noninvasive analytical methods is a necessity. In this work, pink and purple lake pigments recovered from the excavations ... -
Naked Eye Y Amelogenin Gene Fragment Detection Using DNAzymes on a Paper-based Device
(Elsevier, 2020-05-07)Nowadays, there are strong efforts in developing new technology for rapid detection of specific DNA sequences for environmental monitoring, forensic analysis and rapid biomedical diagnosis applications. That is where ... -
Nature and origin of white efflorescence on bricks, artificial stones, and joint mortars of modern houses evaluated by portable Raman spectroscopy and laboratory analyses
(Elsevier, 2015-02-05)Bricks and mortar currently constitute one of the most important building materials used in the construction of most modern facades. The deterioration of these materials is caused primarily by the impact of numerous ... -
On-demand generation and removal of alginate biocompatible microvalves for flow control in microfluidics
(Elsevier, 2016-10-29)[EN] This paper describes, for the first time, the use of alginate hydrogels as miniaturised microvalves within microfluidic devices. These biocompatible and biodegradable microvalves are generated in situ and on demand, ... -
Phantom Membrane Microfluidic Cross-Flow Filtration Device for the Direct Optical Detection of Water Pollutants
(Elservier, 2017-11-06)The diffusion of autonomous sensing platforms capable of a remote large-scale surveillance of environmental water basins is currently limited by the cost and complexity of standard analytical methods. In order to create a ... -
Photoswitchable Layer-by-layer Coatings Based on Photochromic Polynorbornenes Bearing Spiropyran Side Groups
(American Chemical Society, 2018-04-10)Micro-capillaries, capable of light-regulated binding and qualitative detection of divalent metal ions in continuous flow, have been realised through functionalisation with spiropyran photochromic brush-type coatings. Upon ... -
Poly(ionic Liquid) Thermo-responsive Hydrogel Microfluidic Actuators
(2017-03-14)tributylhexyl phosphonium sulfopropylacrylate (PSPA) poly(ionic liquid) (PILc) hydrogels as temperature controlled actuators in microfluidic devices. The hydrogel size is modulated by localised changes in its temperature ... -
Porous self-protonating spiropyran-based NIPAAm gels with improved reswelling kinetics
(Springer, 2016-02)[EN] This study focuses on improving the speed ofactuation of poly(N-isopropylacrylamide)-based photoresponsive gels containing copolymerised spiropyran as the photoswitch and acrylic acid as the proton source. The improvement ... -
Portable and Raman imaging usefulness to detect decaying on mortars from Punta Begoña Galleries (Getxo, North of Spain)
(Wiley, 2016-12)Punta Begoña Galleries were built in 1918 in Getxo (Basque Country, North of Spain) but were abandoned in 1960. Nowadays, their conservation state is very poor. In this work, portable Raman spectroscopy was applied to ... -
Predicting Dimensions in Microfluidic Paper Based Analytical Devices
(MDPI, 2020-12-26)The main problem for the expansion of the use of microfluidic paper-based analytical devices and, thus, their mass production is their inherent lack of fluid flow control due to its uncontrolled fabrication protocols. To ... -
Producing Omega-3 Polyunsaturated Fatty Acids: A Review of Sustainable Sources and Future Trends for the EPA and DHA Market
(MDPI, 2020-11-16)Omega-3 polyunsaturated fatty acids (Omega-3 PUFA) are recognized as being essential compounds for human nutrition and health. The human body generates only low levels of Omega-3 PUFA. Conventional sources of Omega-3 PUFA ... -
Raman imaging to quantify the thermal transformation degree of Pompeian yellow ochre caused by the 79 AD Mount Vesuvius eruption
(Springer, 2019-11-07)Most of the wall paintings from Pompeii are decorated with red and yellow colors but the thermal impact of 79 AD MountVesuvius eruption promoted the partial transformation of some yellow-painted areas into red. The aim of ... -
Response of Horticultural Soil Microbiota to Different Fertilization Practices
(MDPI, 2020-10-06)Environmentally friendly agricultural production necessitates manipulation of microbe–plant interactions, requiring a better understanding of how farming practices influence soil microbiota. We studied the effect of ... -
Reusable Ionogel-based Photo-actuators in a Lab-on-a-disc
(Elsevier, 2017-11-04)This paper describes the design, fabrication and performance of a reusable ionogel-based photo-actuator, in-situ photopolymerised into a lab-on-a-disc microfluidic device, for flow control. The ionogel provides an effective ... -
Review on Microfluidic Paper-based Analytical Devices towards Commercialisation
(Elsevier, 2017-11-11)Paper-based analytical devices introduce an innovative platform technology for fluid handling andanalysis, with wide range of applications, promoting low cost, ease of fabrication/operation and equipment independence. This ... -
Selective ultrasensitive optical fiber nanosensors based on plasmon resonance energy transfer
(American Chemical Society, 2020-04-03)The facet of optical fibers coated with nanostructures enable the development of ultraminiature and sensitive (bio)chemical sensors. The reported sensors until now lack of specificity and the fabrication methods offer poor ...