Search

Your search keyword '"Jiménez de la Morena J"' showing total 9 results
Start Over Author "Jiménez de la Morena J"
9 results on '"Jiménez de la Morena J"'

1. ScipionTomo: Towards cryo-electron tomography software integration, reproducibility, and validation

Author

Jiménez de la Morena, J., Conesa, P., Fonseca, Y.C., de Isidro-Gómez, F.P., Herreros, D., Fernández-Giménez, E., Strelak, D., Moebel, E., Buchholz, T.O., Jug, F., Martinez-Sanchez, A., Harastani, M., Jonic, S., Conesa, J.J., Cuervo, A., Losana, P., Sánchez, I., Iceta, M., del Cano, L., Gragera, M., Melero, R., Sharov, G., Castaño-Díez, D., Koster, A., Piccirillo, J.G., Vilas, J.L., Otón, J., Marabini, R., Sorzano, C.O.S., and Carazo, J.M.

Published
2022
Full Text
View/download PDF

2. On bias, variance, overfitting, gold standard and consensus in single-particle analysis by cryo-electron microscopy

Author

Sorzano, C. O. S., primary, Jiménez-Moreno, A., additional, Maluenda, D., additional, Martínez, M., additional, Ramírez-Aportela, E., additional, Krieger, J., additional, Melero, R., additional, Cuervo, A., additional, Conesa, J., additional, Filipovic, J., additional, Conesa, P., additional, del Caño, L., additional, Fonseca, Y. C., additional, Jiménez-de la Morena, J., additional, Losana, P., additional, Sánchez-García, R., additional, Strelak, D., additional, Fernández-Giménez, E., additional, de Isidro-Gómez, F. P., additional, Herreros, D., additional, Vilas, J. L., additional, Marabini, R., additional, and Carazo, J. M., additional

Published
2022
Full Text
View/download PDF

4. Cryo-EM and Single-Particle Analysis with Scipion

Author

Jiménez-Moreno, A., primary, del Caño, L., primary, Martínez, M., primary, Ramírez-Aportela, E., primary, Cuervo, A., primary, Melero, R., primary, Sánchez-García, R., primary, Strelak, D., primary, Fernández-Giménez, E., primary, de Isidro-Gómez, F.P., primary, Herreros, D., primary, Conesa, P., primary, Fonseca, Y., primary, Maluenda, D., primary, Jiménez de la Morena, J., primary, Macías, J.R., primary, Losana, P., primary, Marabini, R., primary, Carazo, J.M., primary, and Sorzano, C.O.S., primary

Published
2021
Full Text
View/download PDF

5. Magnetic properties of iron oxide nanoparticles prepared by seeded-growth route

Author

Ministerio de Economía y Competitividad (España), European Commission, Comunidad de Madrid, Espinosa, Ana, Muñoz-Noval, A., García-Hernández, Mar, Serrano Rubio, Aída, Jiménez de la Morena, J., García García-Tuñón, Miguel Ángel, Ministerio de Economía y Competitividad (España), European Commission, Comunidad de Madrid, Espinosa, Ana, Muñoz-Noval, A., García-Hernández, Mar, Serrano Rubio, Aída, Jiménez de la Morena, J., and García García-Tuñón, Miguel Ángel

Abstract

In this work we investigate the magnetic properties of iron oxide nanoparticles obtained by two-step synthesis (seeded-growth route) with sizes that range from 6 to 18 nm. The initial seeds result monocrystalline and exhibit ferromagnetic behavior with low saturation field. The subsequent growth of a shell enhances the anisotropy inducing magnetic frustration, and, consequently, reducing its magnetization. This increase in anisotropy occurs suddenly at a certain size (~10 nm). Electronic and structural analysis with X-ray absorption spectroscopy indicates a step reduction in the oxidation state as the particle reaches 10 nm size while keeping its overall structure in spite of the magnetic polydispersity. The formation of antiphase magnetic boundaries due to island percolation in the growing shells is hypothesized to be the mechanism responsible of the magnetic behavior, as a direct consequence of the two-step synthesis route of the nanoparticles.

Published
2013

6. On the discrimination between magnetite and maghemite by XANES measurements in fluorescence mode

Author

Espinosa, Ana, Serrano A., Llavona A., Jiménez De La Morena J., Abuín M., Figuerola A., Pellegrino T., Fernández J.F., García-Hernández M., Castro G.R., García M.A., Espinosa, Ana, Serrano A., Llavona A., Jiménez De La Morena J., Abuín M., Figuerola A., Pellegrino T., Fernández J.F., García-Hernández M., Castro G.R., and García M.A.

Published
2012

7. Miniaturized Devices For Au Nanorods Detection

Author

Carmona Tejero, Noemí, Bouzas, V., Jiménez de la Morena, J., García, M. A., Carmona Tejero, Noemí, Bouzas, V., Jiménez de la Morena, J., and García, M. A.

Abstract

We present here some miniaturised devices designed for the detection of nanorods in water and blood media. The devices use light emitting diodes as monochromatic light sources and Si photodiodes for detection. Devices working on transmission mode are able to detect nanorods concentration below micrograms/litre. Sensitivity is reduced is one or of magnitude for nanorods in blood. We show detection of low nanorods concentration with devices working in reflection mode, opening the possibility to perform direct imaging of nanorods in vivo. The optima condition for detection and resolution limits are also discussed.

Published
2010

8. Miniaturized Devices For Au Nanorods Detection

Author

Carmona, N., Bouzas, V., Jiménez de la Morena, J., Pérez García, Miguel Ángel, Carmona, N., Bouzas, V., Jiménez de la Morena, J., and Pérez García, Miguel Ángel

Abstract

We present here some miniaturised devices designed for the detection of nanorods in water and blood media. The devices use light emitting diodes as monochromatic light sources and Si photodiodes for detection. Devices working on transmission mode are able to detect nanorods concentration below micrograms/litre. Sensitivity is reduced is one or of magnitude for nanorods in blood. We show detection of low nanorods concentration with devices working in reflection mode, opening the possibility to perform direct imaging of nanorods in vivo. The optima condition for detection and resolution limits are also discussed.

Published
2010

9. Scipion3: A workflow engine for cryo-electron microscopy image processing and structural biology.

Author

Conesa P, Fonseca YC, Jiménez de la Morena J, Sharov G, de la Rosa-Trevín JM, Cuervo A, García Mena A, Rodríguez de Francisco B, Del Hoyo D, Herreros D, Marchan D, Strelak D, Fernández-Giménez E, Ramírez-Aportela E, de Isidro-Gómez FP, Sánchez I, Krieger J, Vilas JL, Del Cano L, Gragera M, Iceta M, Martínez M, Losana P, Melero R, Marabini R, Carazo JM, and Sorzano COS

Abstract

Image-processing pipelines require the design of complex workflows combining many different steps that bring the raw acquired data to a final result with biological meaning. In the image-processing domain of cryo-electron microscopy single-particle analysis (cryo-EM SPA), hundreds of steps must be performed to obtain the three-dimensional structure of a biological macromolecule by integrating data spread over thousands of micrographs containing millions of copies of allegedly the same macromolecule. The execution of such complicated workflows demands a specific tool to keep track of all these steps performed. Additionally, due to the extremely low signal-to-noise ratio (SNR), the estimation of any image parameter is heavily affected by noise resulting in a significant fraction of incorrect estimates. Although low SNR and processing millions of images by hundreds of sequential steps requiring substantial computational resources are specific to cryo-EM, these characteristics may be shared by other biological imaging domains. Here, we present Scipion, a Python generic open-source workflow engine specifically adapted for image processing. Its main characteristics are: (a) interoperability, (b) smart object model, (c) gluing operations, (d) comparison operations, (e) wide set of domain-specific operations, (f) execution in streaming, (g) smooth integration in high-performance computing environments, (h) execution with and without graphical capabilities, (i) flexible visualization, (j) user authentication and private access to private data, (k) scripting capabilities, (l) high performance, (m) traceability, (n) reproducibility, (o) self-reporting, (p) reusability, (q) extensibility, (r) software updates, and (s) non-restrictive software licensing., Competing Interests: The authors declare no competing interests exist., (© The Author(s) 2023.)

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results