Search results for " Magne"
showing 10 items of 8203 documents
Molecular Spintronic Devices: from Molecular Spin Valves to Spin-OLEDs
2017
La investigación llevada a cabo durante el periodo de tesis doctoral y que se describe en este manuscrito pertenece al campo de la espintrónica molecular. Ha sido motivada por el deseo de incorporar nuevos materiales moleculares a dispositivos espintrónicos y ahondar en la comprensión de la inyección y el transporte de espín en este tipo de capas, a través del estudio de dispositivos como la válvula de espín molecular y el spin-OLED. En 1988 Albert Fert y Peter Grünberg descubrieron que la resistencia eléctrica de unas multicapas de Fe-Cr variaba considerablemente en función de la magnetización de las láminas. El efecto se conoce hoy en día como magnetoresistencia gigante o GMR, por sus sig…
Spin crossover cobalt(II) molecular nanomagnets as dynamic molecular systems
2022
Los complejos mononucleares de iones metálicos paramagnéticos de la primera serie de transición con ligandos "no-inocentes" hechos a medida han surgido recientemente como prototípicos de sistemas moleculares dinámicos (DMSs, del inglés “dynamic molecular systems”). El enorme impacto de los DMSs en varios dominios de la nanociencia y nanotecnología molecular se debe a su capacidad para ejecutar funciones específicas y selectivas bajo el control de un estímulo externo que modula adecuadamente sus propiedades estructurales y electrónicas (ópticas, redox y magnéticas). En esta Tesis Doctoral, a lo largo de siete capítulos describimos la química y las propiedades físicas de una clase única de na…
Reliability of transcranial magnetic stimulation and H-reflex measurement during balance perturbation tasks
2022
Following ankle movement, posterior balance perturbation evokes short- (SLR ∼30–50 ms), medium- (MLR ∼50–60 ms), and long-latency responses (LLR ∼70–90 ms) in soleus muscle before voluntary muscle contraction. Transcranial magnetic stimulation (TMS) and Hoffmann-reflex (H-reflex) measurements can provide insight into the contributions of corticospinal and spinal mechanisms to each response. Motor evoked potential (MEP) and H-reflex responses have shown good reliability in some dynamic muscle contraction tasks. However, it is still unclear how reliable these methods are in dynamic balance perturbation and corticospinal modulation during long amplitude balance perturbation tasks. 14 subjects …
Transkraniaalinen magneettistimulaatiotutkimus kätisyydestä
2013
Transkraniaalisen magneettistimulaation (TMS) avulla voidaan tutkia kivuttomasti ja noninvasiivisesti aivokuoren ja kortikospinaalisten ratojen toimintaa. Kohdistamalla stimulaatio primaariselle motoriselle aivokuorelle (M1) aiheutetaan lihasvaste (MEP) kehon vastakkaisella puolella. Kätisyyden vaikutuksesta kortikospinaalisten ratojen toimintaan on esitetty ristiriitaista tietoa. Tämän tutkielman tarkoituksena oli selvittää käden dominanssin vaikutusta MEP:hin oikea- ja vasenkätisillä. Lisäksi kätisyyksien välisiä eroavaisuuksia tarkasteltiin käsien vertailevien toiminnallisten testien avulla. Tutkimukseen osallistui 23 tervettä vapaaehtoista henkilöä (22–56-vuotta), joista 14 oli oikeakät…
The effect of transient visual deprivation on motor cortical excitability and motor learning : a pilot study
2016
Castro, Fabio, 2015. The Effect of Transient Visual Deprivation on Motor Cortical Excitability and Motor Learning. University of Jyväskylä, Department of Biology of Physical Activity, Master Thesis in Applied Biomechanics. 86 pp. We devised an experimental protocol to test the hypothesis that if the performer poses attention on the proprioceptive signals, in the form of awareness of the body in space, this could increase the corticospinal excitability and the overall performance. 10 right-handed volunteers were randomly assigned to either a group performing a skill training blindfolded (BLIND) or in normal (NORM) condition. The intervention included a visuomotor task-related skill training …
Excitation Transfer Engineering in Ce-Doped Oxide Crystalline Scintillators by Codoping with Alkali-Earth Ions
2018
This work has been supported by the European Social Fund Measure No. 09.3.3-LMT-K-712 activity Improvement of Researchers Qualification by Implementing the World-Class R&D Projects, and by grant #14.W03.31.0004 of the Russian Federation Government. Authors are grateful to CERN Crystal Clear Collaboration and COST Action TD1401 "Fast Advanced Scintillator Timing (FAST)" for support of collaboration.
The relationship between electrophysiological and hemodynamic measures of neural activity varies across picture naming tasks: A multimodal magnetoenc…
2022
Funding Information: This work was financially supported by the Academy of Finland (Finnish Center of Excellence in Computational Inference Research COIN and grants #292334, #294238 to SK; #255349, #315553 to RS; #257576 to JK; #286405 funding for TM), the Sigrid Jusélius Foundation (grant to RS), the Finnish Cultural Foundation (grant to ML), the Swedish Cultural Foundation in Finland (grant to ML), the Maud Kuistila Memorial Foundation (grant to ML), and Aalto Brain Center. Publisher Copyright: Copyright © 2022 Mononen, Kujala, Liljeström, Leppäaho, Kaski and Salmelin. Different neuroimaging methods can yield different views of task-dependent neural engagement. Studies examining the relat…
NMR and μ+SR detection of unconventional spin dynamics in Er(trensal) and Dy(trensal) molecular magnets
2019
Patologia Muscolare
2008
Imaging of Temporomandibular Joint: Approach by Direct Volume Rendering
2014
Background: The purpose of this study was to conduct a morphological analysis of the temporomandibular joint, a highly specialized synovial joint that permits movement and function of the mandible. Materials and Methods: We have studied the temporom-andibular joint anatomy, directly on the living, from 3D images obtained by medical imaging Computed Tomography and Nuclear Magnetic Resonance acquisition, and subsequent re-engineering techniques 3D Surface Rendering and Volume Rendering. Data were analysed with the goal of being able to isolate, identify and distinguish the anatomical structures of the joint, and get the largest possible number of information utilizing software for post-proces…