210 research outputs found
La secuencia pleistocénica dunar de Son Mosón (Mallorca) y sus correlaciones faunísticas y estratigráficas
Abstract not availabl
Erratum: The Non-Coding RNA Journal Club: Highlights on Recent Papers-4. Non-Coding RNA 2016, 2, 9.
Please note that in the published editorial [1], affiliations 1, and 8 contained errors.[...]
Estem perdent el control?
This essay challenges the predominant assumption that humans shape technology using top-down, intelligent design, suggesting that technology should instead be viewed as the result of a Darwinian evolutionary process where humans are the agents of mutation. Consequently, we humans have much less control than we think over the outcomes of technology development.Aquest assaig qüestiona la suposició predominant que els humans donen forma a la tecnologia mitjançant un disseny descendent intel·ligent, suggerint que la tecnologia hauria de ser vista com el resultat d’un procés evolutiu darwinià en què els humanssón els agents de mutació. En conseqüència, els humans tenim molt menys control del que pensem sobre els resultats del desenvolupament tecnològic
First Report of Cucurbit chlorotic yellows virus Infecting Cucumber and Zucchini in Algeria
This work was supported by the Spanish Ministerio de Ciencia, Innovacion y Universidades, cofunded with FEDER funds (project nos. AGL2017-85563-C2-1-R and RTA2017-00061-0O3-03 [INIA]) and the programa para grupos de investigacion de excelencia from the Conselleria d'Educacio, Investigacio, Cultura i Esport, (Generalitat Valenciana) (Prometeo Program 2017/078). A. Kheireddine thanks the Erasmus+ Programme of the European Union for her mobility project (KA107 2018-20). C. Saez is a recipient of a predoctoral fellowship from Generalitat Valenciana, cofunded by the Operational Program of the European Social Fund (FSECV 2014-2020) (grant no. ACIF/2016/188). Plant Dis. 104: 1264, 2020; published online as https://doi.org/10.1094/PDIS-10-19-2091PDN.Accepted for publication 19 December 2019.Kheireddine, A.; Sáez-Sánchez, C.; Sifres Cuerda, AG.; Picó Sirvent, MB.; López Del Rincón, C. (2020). First Report of Cucurbit chlorotic yellows virus Infecting Cucumber and Zucchini in Algeria. Plant Disease. 104(4):1264-1264. https://doi.org/10.1094/PDIS-10-19-2091-PDNS12641264104
A new lower limb portable exoskeleton for gait assistance in neurological patients: a proof of concept study
Background: Few portable exoskeletons following the assist-as-needed concept have been developed for patients with neurological disorders. Thus, the main objectives of this proof-of-concept study were 1) to explore the safety and feasibility of an exoskeleton for gait rehabilitation in stroke and multiple sclerosis patients, 2) to test different algorithms for gait assistance and measure the resulting gait changes and 3) to evaluate the user's perception of the device.
Methods: A cross-sectional study was conducted. Five patients were recruited (4 patients with stroke and 1 with multiple sclerosis). A robotic, one-degree-of-freedom, portable lower limb exoskeleton known as the Marsi Active Knee (MAK) was designed. Three control modes (the Zero Force Control mode, Mode 1 and Mode 3) were implemented. Spatiotemporal gait parameters were measured by the 10-m walking test (10MWT), the Gait Assessment and Intervention Tool (G.A.I.T.) and Tinetti Performance Oriented Mobility Assessment (gait subscale) before and after the trials. A modified QUEST 2.0 questionnaire was administered to determine each participant's opinion about the exoskeleton. The data acquired by the MAK sensors were normalized to a gait cycle, and adverse effects were recorded.
Results: The MAK exoskeleton was used successfully without any adverse effects. Better outcomes were obtained in the 10MWT and G.A.I.T. when Mode 3 was applied compared with not wearing the device at all. In 2 participants, Mode 3 worsened the results. Additionally, Mode 3 seemed to improve the 10MWT and G.A.I.T. outcomes to a greater extent than Mode 1. The overall score for the user perception of the device was 2.8 ± 0.4 95% CI.
Conclusions: The MAK exoskeleton seems to afford positive preliminary results regarding safety, feasibility, and user acceptance. The efficacy of the MAK should be studied in future studies, and more advanced improvements in safety must be implemented.G. Puyuelo-Quintana has received financial support by the “Doctorado Industrial” grant of Ministerio de Ciencia, Innovación y Universidades de España
(reference DI-16- 08731).
A. Plaza-Flores and E. Garces-Castellote have received financial support by
the “Doctorado Industrial” grant of Comunidad de Madrid (reference
IND2017/TIC-7698 and IND2018/TIC-9618, respectively).Peer reviewe
Objective evaluation of ram and buck sperm motility by using a novel sperm tracker software
This work offers researchers the first version of an open-source sperm tracker software (Sperm Motility Tracker, V1.0) containing a novel suit of algorithms to analyze sperm motility using ram and buck sperm as models. The computer-assisted semen analysis is used in several publications with increasing trend worldwide in the last years, showing the importance of objective methodologies to evaluate semen quality. However, commercial systems are costly and versatility is constrained. In the proposed method, segmentation is applied and the tracking stage is performed by using individual Kalman filters and a simplified occlusion handling method. The tracking performance in terms of precision (number of true tracks), the percentage of fragmented paths and percentage of correctly detected particles were manually validated by three experts and compared with the performance of a commercial motility analyzer (Microptic's SCA). The precision obtained with our sperm motility tracker was higher than the one obtained with a commercial software at the current acquisition frame rate of 25 fps (P < 0.0001), concomitantly with a similar percentage of fragmentized tracks (P = 0.0709) at sperm concentrations ranging 25-37 106 cells/mL. Moreover, our tracker was able to detect trajectories that were unseen by SCA. Kinetic values obtained by using both methods were contrasted. The higher values found were explained based on the better performance of our sperm tracker to report speed parameters for very fast motile sperm. To standardize results, acquisition conditions are suggested. This open-source sperm tracker software has a good plasticity allowing researchers to upgrade according requirements and to apply the tool for sperm from a variety of species.Fil: Buchelly Imbachí, Francisco Javier. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Zalazar, Lucia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Biológicas. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Biológicas; ArgentinaFil: Pastore, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Biológicas. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Biológicas; ArgentinaFil: Greco, M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Biológicas. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Biológicas; ArgentinaFil: Iniesta-Cuerda, M.. Universidad de Castilla-La Mancha; EspañaFil: Garde, J. J.. Universidad de Castilla-La Mancha; EspañaFil: Soler, A. J.. Universidad de Castilla-La Mancha; EspañaFil: Ballarin, Virginia Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Científicas y Tecnológicas en Electrónica. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones Científicas y Tecnológicas en Electrónica; ArgentinaFil: Cesari, Andreina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Biológicas. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Biológicas; Argentin
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