Results 1 to 10 of about 28,930 (189)

3D printed opto-microfluidic autonomous analyzer for photometric applications [PDF]

HardwareX, 2023
3D printed opto-microfluidic autonomous analyzer for photometric applications performs the automation of analytical micro-processes. The proposed device was designed under restrictions of small size and low energy consumption, which allow its portability
Camarillo-Escobedo Rosa, Flores-Nuñez Jorge, García-Muñoz Luis, Camarillo-Escobedo Juana, Peña-Dominguez Edgar   +4 more
doaj   +2 more sources

Multilayered Manufacturing Method for Microfluidic Systems Using Low-Cost, Resin-Based Three-Dimensional Printing [PDF]

Sensors
This work presents a multilamination method for fabricating microfluidic devices or analytical microsystems using commercial 3D printers and photocurable resins as primary components.
Victor Edi Manqueros-Avilés, Hesner Coto-Fuentes, Karla Victoria Guevara-Amatón, Francisco Valdés-Perezgasga, Julian Alonso-Chamarro   +4 more
doaj   +2 more sources

Image segmentation with Cellular Automata [PDF]

Heliyon
Image segmentation is a computer vision technique that involves dividing an image into distinct and meaningful regions or segments. The objective was to partition the image into areas that share similar visual characteristics.
Cesar Ascencio-Piña, Sonia García-De-Lira, Erik Cuevas, Marco Pérez   +3 more
doaj   +2 more sources

Search Patterns Based on Trajectories Extracted from the Response of Second-Order Systems

Applied Sciences, 2021
Recently, several new metaheuristic schemes have been introduced in the literature. Although all these approaches consider very different phenomena as metaphors, the search patterns used to explore the search space are very similar.
Erik Cuevas, Héctor Becerra, Héctor Escobar, Alberto Luque-Chang, Marco Pérez, Heba F. Eid, Mario Jiménez   +6 more
doaj   +1 more source

CUBA SURFACE ESTIMATION FROM SHORELINE MAPPING, GENERATED BY SENTINEL-2 IMAGE PROCESSING [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The coastal with its geographical elements are modified over time, changes that may occur in the long or short term so, shoreline represented in the cartographic documents does not always match with reality.
D. Ojeda Martínez, P. Martinez Fernández, P. C. Matamoros Fombellida, M. Morejón González, R. Álvarez Portal, K. Labori de la Rosa   +5 more
doaj   +1 more source

Effective and Efficient Resonant Transitions in Periodically Modulated Quantum Systems

Quantum Reports, 2021
We analyze periodically modulated quantum systems with SU(2) and SU(1,1) symmetries. Transforming the Hamiltonian into the Floquet representation we apply the Lie transformation method, which allows us to classify all effective resonant transitions ...
Isabel Sainz, Andrés García, Andrei B. Klimov   +2 more
doaj   +1 more source

Kinetic characterization, antioxidant and in vitro toxicity potential evaluation of the extract M116 from Bacillus amyloliquefaciens, a Cuban southern coastmarine microorganism [PDF]

Journal of Pharmacy & Pharmacognosy Research, 2023
Context: Marine ecosystems are sources of bioactive compounds. Thirty-eight microorganism strains from the Cuban platform were screened, which allowed us to identify an extract from Bacillus amyloliquefaciens, strain CBM-116, as a source for obtaining ...
Ilianet Céspedes, Fabiana Fuentes-León, Idania Rodeiro, Yoskiel Laurencio-Lorca, María V. Iglesias, José A. Herrera, Cindel Cuellar, Valia Caballero, Lis Pereira, Elizabeth Cuétara, Ángel Sanchez, Miguel D. Fernández, Roberto R. Núñez, Ivones Hernández-Balmaseda, Eudalys Ortiz   +14 more
doaj   +1 more source

Naturaleza y arqueología: la reproducción en sociedades cazadoras-recolectoras o la primera revolución reproductiva [PDF]

Revista Atlántica-Mediterránea de Prehistoria y Arqueología Social, 2010
La explicacion para las sociedades cazadoras-recolectoras prehistoricas se basa en procesos inferenciales y analogicos que toman como referencia las sociedades cazadoras-recolectoras modernas. Sin embargo ninguna sociedad estudiada por la Etnografia era primitiva y mucho menos prehistorica.
Assumpció Vila, Jordi Estévez
openaire   +1 more source

Introducción al dosier: A 50 años del golpe de Estado: reflexiones sobre la revolución y la historia reciente desde la militancia [PDF]

Aletheia, 2023
A 50 años del golpe de Estado: reflexiones sobre la revolución y la historia reciente desde la ...
Alonso, Jimena, Robles Recabarren, Javiera Libertad, Saporosi, Lucas   +2 more
openaire   +3 more sources

"Sin mujeres no hay revolución" : transversal feminist politics in the digital mediated activism of the Argentine collective Ni una menos [PDF]

, 2021
While the advent of the Internet and digital social networks has opened opportunities for global connectivity, participation, and broadcasting to agents outside the media, corporations and the state, inequities structuring societies and transnational relations still organize the flows of power in digital environments.
openaire   +2 more sources