Influence of the Main Filter on QRS-amplitude and Duration in Human Electrocardiogram.

Accurate measurement of electrocardiograms (ECG) is critical for effective diagnosis of patient’s cardiac functions. Detailed examination of filters’ effects on ECG accuracy, reproducibility and robustness covering a wide range of available commercial products can provide valuable information on the relationship between quality and effectiveness of filters, and assessments of patients’ cardiac functions. In this study, ECG device with 12 leads and built-in filters used for ECG measurements was assessed on human volunteers. Results showed that with respect to measuring QRS wave duration and R-amplitude variation, there was a 4 % inaccuracy when the main filter was ON and OFF, and R-amplitude variation was most pronounced in the V4 lead. Accordingly, variability of R-amplitude and length of QRS wave can be reduced by the use of appropriate lead, and filter activation during the ECG assessment

High resolution infrared absorption spectra, crystal field, and relaxation processes in CsCdBr_3:Pr^3+

High resolution low-temperature absorption spectra of 0.2% Pr^3+ doped CsCdBr_3 were measured in the spectral region 2000--7000 cm-1. Positions and widths of the crystal field levels within the 3H5, 3H4, 3F2, and 3F3 multiplets of the Pr^3+ main center have been determined. Hyperfine structure of several spectral lines has been found. Crystal field calculations were carried out in the framework of the semiphenomenological exchange charge model (ECM). Parameters of the ECM were determined by fitting to the measured total splittings of the 3H4 and 3H6 multiplets and to the observed in this work hyperfine splittings of the crystal field levels. One- and two-phonon relaxation rates were calculated using the phonon Green's functions of the perfect (CsCdBr_3) and locally perturbed (impurity dimer centers in CsCdBr_3:Pr^3+) crystal lattice. Comparison with the measured linewidths confirmed an essential redistribution of the phonon density of states in CsCdBr_3 crystals doped with rare-earth ions.Comment: 16 pages, 5 tables, 3 figure

Optical spectra, crystal-field parameters, and magnetic susceptibility of the new multiferroic NdFe3(BO3)4

We report high-resolution optical absorption spectra for NdFe3(BO3)4 trigonal single crystal which is known to exhibit a giant magnetoelectric effect below the temperature of magnetic ordering TN = 33 K. The analysis of the temperature-dependent polarized spectra reveals the energies and, in some cases, symmetries and exchange splittings of Nd3+ 84 Kramers doublets. We perform crystal-field calculations starting from the exchange-charge model, obtain a set of six real crystal-field parameters, and calculate wave functions and magnetic g-factors. In particular, the values g(perpendicular) = 2.385, g(parallel) = 1.376 were found for the Nd3+ ground-state doublet. We obtain Bloc=7.88 T and |JFN|= 0.48 K for the values of the local effective magnetic field at liquid helium temperatures at the Nd3+ site and the Nd - Fe exchange integral, respectively, using the experimentally measured Nd3+ ground-state splitting of 8.8 cm-1. To check reliability of our set of crystal field parameters we model the magnetic susceptibility data from literature. A dimer containing two nearest-neighbor iron ions in the spiral chain is considered to partly account for quasi-one-dimensional properties of iron borates, and then the mean-field approximation is used. The results of calculations with the exchange parameters for Fe3+ ions Jnn = -6.25 K (intra-chain interactions) and Jnnn = -1.92 K (inter-chain interactions) obtained from fitting agree well with the experimental data.Comment: 13 pages, 8 figures, 2 table

A lack of diversity, equity, and inclusion in clinical research has direct impact on patient care

info:eu-repo/semantics/publishedVersio

Primer to Voltage Imaging With ANNINE Dyes and Two-Photon Microscopy

ANNINE-6 and ANNINE-6plus are voltage-sensitive dyes that when combined with two-photon microscopy are ideal for recording of neuronal voltages in vivo, in both bulk loaded tissue and the dendrites of single neurons. Here, we describe in detail but for a broad audience the voltage sensing mechanism of fast voltage-sensitive dyes, with a focus on ANNINE dyes, and how voltage imaging can be optimized with one-photon and two-photon excitation. Under optimized imaging conditions the key strengths of ANNINE dyes are their high sensitivity (0.5%/mV), neglectable bleaching and phototoxicity, a linear response to membrane potential, and a temporal resolution which is faster than the optical imaging devices currently used in neurobiology (order of nanoseconds). ANNINE dyes in combination with two-photon microscopy allow depth-resolved voltage imaging in bulk loaded tissue to study average membrane voltage oscillations and sensory responses. Alternatively, if ANNINE-6plus is applied internally, supra and sub threshold voltage changes can be recorded from dendrites of single neurons in awake animals. Interestingly, in our experience ANNINE-6plus labeling is impressively stable in vivo, such that voltage imaging from single Purkinje neuron dendrites can be performed for 2 weeks after a single electroporation of the neuron. Finally, to maximize their potential for neuroscience studies, voltage imaging with ANNINE dyes and two-photon microscopy can be combined with electrophysiological recording, calcium imaging, and/or pharmacology, even in awake animals

Conveni de col·laboració en el Departament de Treball, Indústria, Comerç i Turisme de la Generalitat de Catalunya, l'Ajuntament de Barcelona, la Cambra Oficial de Comerç, Indústria i Navegació de Barcelona i la Federació de Comerç del Casc Antic, per a l'execució del Pla de Dinamització Comercial del Casc Antic

Aprovat per Decret de l'Alcaldia de 17-06-2003Signat per les entitats participants el 25-09-2003Annex. Contingut i etapes del Pla Dinamitzado

I Jornadas de Patrimonio Musical

Programa i resums de: "I Jornadas de Patrimonio Musical. 5-6 de mayo 2022. Universitat de Barcelona - Facultad de Geografia e Historia"[spa] Por primera vez la Universitat de Barcelona acoge unas I Jornadas de Patrimonio Musical, en esta ocasión en colaboración con el CSIC. Las Jornadas tienen un doble objetivo: dar a conocer el rico patrimonio musical que atesora la propia Universitat de Barcelona (custodiado por el CRAI Biblioteca de Fondo Antiguo), hoy en día poco conocido y que se revela de una importancia inusitada en el contexto catalán, español y del ámbito internacional. Y, por otro lado, plantear, reflexionar y proponer diferentes maneras de acercarse al estudio, la investigación, la conservación y la gestión del patrimonio musical. Contemplar las múltiples caras de la música respecto al patrimonio (oral, escrito, sonoro, organológico o instrumental, iconográfico...), y tratando de aplicar el estudio del pasado a la realidad presente y su proyección hacia el futuro, en estas I Jornadas de Patrimonio Musical se han invitado especialistas de ámbitos bien diferentes, conectados a través de la música, con la voluntad de abordar el patrimonio musical desde una mirada transversal y multidisciplinar.[cat] Per primera vegada la Universitat de Barcelona acull unes I Jornades de Patrimoni Musical, en aquesta ocasió en col·laboració amb el CSIC. Les jornades tenen un doble objectiu: donar a conèixer el ric patrimoni musical que atresora la pròpia Universitat de Barcelona (custodiat al CRAI Biblioteca de Fons Antic), fins avui dia poc conegut i que es revela d’una importància social inusitada en el context català, espanyol i de l’àmbit internacional. I, d’altra banda, plantejar, reflexionar i proposar diferents maneres d’apropar-se a l’estudi, la recerca, la conservació i la gestió del patrimoni musical. Tot contemplant les múltiples vessants de la música respecte al patrimoni (oral, escrit, sonor, organològic o instrumental, iconogràfic...), i tractant d’aplicar l’estudi del passat a la realitat present i la seva projecció cap el futur, en aquestes I Jornades de Patrimoni Musical s’han convidat especialistes d’àmbits ben diferents, connectats mitjançant la música, per així aconseguir abordar el patrimoni musical des d’una mirada transversal i multidisciplinària

Genetic Characterization of Hantaviruses Transmitted by the Korean Field Mouse (Apodemus peninsulae), Far East Russia

In an epizootiologic survey of 122 rodents captured in Vladivostok, Russia, antibodies positive for hantavirus were found in Apodemus peninsulae (4/70), A. agrarius (1/39), and Clethrionomys rufocanus (1/8). The hantavirus sequences identified in two seropositive A. peninsulae and two patients with hemorrhagic fever with renal syndrome (HFRS) from the Primorye region of Far East Russia were designated as Solovey and Primorye, respectively. The nucleotide sequences of the Solovey, Primorye, and Amur (obtained through GenBank) sequences were closely related (>92% identity). Solovey and Primorye sequences shared 84% nucleotide identity with the prototype Hantaan 76-118. Phylogenetic analysis also indicated a close relationship between Solovey, Primorye, Amur, and other viruses identified in Russia, China, and Korea. Our findings suggest that the Korean field mouse (A. peninsulae) is the reservoir for a hantavirus that causes HFRS over a vast area of east Asia, including Far East Russia