Search Results - "Jan, Jiri"

Stratification and respiration dynamics in shallow ponds: insights from continuous temperature measurements by Goncharov, Oleksandr, Jan, Jiří, Borovec, Jakub

“…In this study, we performed continuous high spatial resolution temperature measurements (six thermistors per 1–1.4 m water column) at six sites in three…”
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Approach for predicting P sorption/desorption behaviour of potentially eroded topsoil in watercourses by Borovec, Jakub, Jan, Jiří

“…This study focuses on the quantification of the impact of potentially eroded topsoil particles on the available watercourse P concentration. We used 56 topsoil…”
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Contrasting catchment soil pH and Fe concentrations influence DOM distribution and nutrient dynamics in freshwater systems by Osafo, Nana O.-A., Jan, Jiří, Porcal, Petr, Borovec, Jakub

“…Organic matter (OM) quantity, quality, and nutrient dynamics within twelve shallow lakes in the Czech Republic were assessed in the context of catchment soil…”
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Deep convolutional neural network-based segmentation and classification of difficult to define metastatic spinal lesions in 3D CT data by Chmelik, Jiri, Jakubicek, Roman, Walek, Petr, Jan, Jiri, Ourednicek, Petr, Lambert, Lukas, Amadori, Elena, Gavelli, Giampaolo

“…•Individual architecture of convolutional neural network.•Patient and scan protocol dependent pre-processing.•Medial axis transform post-processing for shape…”
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Assessment of two non-invasive techniques for measuring turbulent benthic fluxes in a shallow lake by Breton, Felipe, Souza, Guilherme Calabro, Lorke, Andreas, Dubois, Philippe, Jodeau, Magali, Moilleron, Régis, Vinçon-Leite, Brigitte, Jan, Jiří, Borovec, Jakub, Lemaire, Bruno J.

“…Benthic fluxes refer to the exchange rates of nutrients and other compounds between the water column and the sediment bed in aquatic ecosystems. Their…”
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Dynamic modeling of neuronal responses in fMRI using cubature Kalman filtering by Havlicek, Martin, Friston, Karl J., Jan, Jiri, Brazdil, Milan, Calhoun, Vince D.

“…This paper presents a new approach to inverting (fitting) models of coupled dynamical systems based on state-of-the-art (cubature) Kalman filtering. Crucially,…”
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Sound-speed image reconstruction in sparse-aperture 3-D ultrasound transmission tomography by Jifik, Radovan, Peterlik, Igor, Ruiter, Nicole, Fousek, Jan, Dapp, Robin, Zapf, Michael, Jan, Jiff

“…The paper is focused on sound-speed image reconstruction in 3-D ultrasound transmission tomography. Along with ultrasound reflectivity and the attenuation…”
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What do results of common sequential fractionation and single-step extractions tell us about P binding with Fe and Al compounds in non-calcareous sediments? by Jan, Jiří, Borovec, Jakub, Kopáček, Jiří, Hejzlar, Josef

“…Correct identification of P forms together with their main Fe and Al binding partners in non-calcareous sediments is of crucial importance for evaluation of P…”
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Bioaccumulation of chemical elements at post-industrial freshwater sites varies predictably between habitats, elements and taxa: A power law approach by Carreira, Bruno M., Kolář, Vojtěch, Chmelová, Eliška, Jan, Jiří, Landeira-Dabarca, Josip Adašević Andrea, Vebrová, Lucie, Poláková, Martina, Horká, Petra, Otáhalová, Šárka, Musilová, Zuzana, Borovec, Jakub, Tropek, Robert, Boukal, David S.

“…Elevated environmental levels of elements originating from anthropogenic activities threaten natural communities and public health, as these elements can…”
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Assessment of phosphorus associated with Fe and Al (hydr)oxides in sediments and soils by Jan, Jiří, Borovec, Jakub, Kopáček, Jiří, Hejzlar, Josef

“…Purpose Numerous extraction procedures have been used to characterize phosphorus (P) forms bound to iron (Fe) and aluminum (Al) (hydr)oxides in soils and…”
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Muddying the unexplored post-industrial waters: Biodiversity and conservation potential of freshwater habitats in fly ash sedimentation lagoons by Kolar, Vojtech, Chmelová, Eliška, Bílková, Martina, Borovec, Jakub, Carreira, Bruno M., Černý, Martin, Ditrich, Tomáš, Horká, Petra, Hrivniak, Ľuboš, Hrubý, František, Jan, Jiří, Landeira-Dabarca, Andrea, Lepšová-Skácelová, Olga, Musilová, Zuzana, Otáhalová, Šárka, Poláková, Martina, Polášková, Vendula, Sacherová, Veronika, Špaček, Jan, Sroka, Pavel, Vebrová, Lucie, Boukal, David S., Tropek, Robert

“…Deposits of fly ash and other coal combustion wastes are common remnants of the energy industry. Despite their environmental risks from heavy metals and trace…”
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Blind Visualization of Task-Related Networks From Visual Oddball Simultaneous EEG-fMRI Data: Spectral or Spatiospectral Model? by Labounek, René, Wu, Zhuolin, Bridwell, David A, Brázdil, Milan, Jan, Jiří, Nestrašil, Igor

“…Various disease conditions can alter EEG event-related responses and fMRI-BOLD signals. We hypothesized that event-related responses and their clinical…”
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Organic matter character as a critical factor determining the fate and stability of its association with iron in sediments by Osafo, Nana O.-A., Jan, Jiří, Valero, Astolfo, Porcal, Petr, Petrash, Daniel A., Borovec, Jakub

“…Purpose Complexes of organic matter (OM) with iron (Fe) oxyhydroxides (OM-Fe) prevent/reduce microbial degradation and enhance its stabilization in soils and…”
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Exploring task-related variability in fMRI data using fluctuations in power spectrum of simultaneously acquired EEG by Labounek, René, Lamoš, Martin, Mareček, Radek, Brázdil, Milan, Jan, Jiří

“…•Introduced MATLAB toolbox called EEG Regressor Builder.•Novelty: relative EEG power in GLM EEG-fMRI estimation.•Task-related activity coded better by relative…”
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Iron and nitrogen cycling, bacterioplankton community composition and mineral transformations involving phosphorus stabilisation in the ferruginous hypolimnion of a post-mining lake by Petrash, Daniel A, Jan, Jiří, Sirová, Dagmara, Osafo, Nana O-A, Borovec, Jakub

“…Lake Medard is an oligotrophic post-mining lake characterised by ferruginous bottom waters, with marked redox gradients resulting from iron (Fe) and nitrogen…”
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Redox-driven geochemical partitioning of metal(loid)s in the iron-rich anoxic sediments of a recently flooded lignite mine pit: Lake Medard, NW Czechia by Umbría-Salinas, Karelys, Valero, Astolfo, Jan, Jiří, Borovec, Jakub, Chrastný, Vladislav, Petrash, Daniel A.

“…•Metal's fate was assessed by coupling their partitioning with REE systematics.•Highly mobile As(III) would represent a potential ecological risk after…”
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EEG spatiospectral patterns and their link to fMRI BOLD signal via variable hemodynamic response functions by Labounek, René, Bridwell, David A., Mareček, Radek, Lamoš, Martin, Mikl, Michal, Bednařík, Petr, Baštinec, Jaromír, Slavíček, Tomáš, Hluštík, Petr, Brázdil, Milan, Jan, Jiří

“…•Examining of fMRI associations with stable EEG spatiospectral pattern timecourses.•EEG-fMRI associations were examined during three paradigms.•EEG-fMRI F-maps…”
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Stable Scalp EEG Spatiospectral Patterns Across Paradigms Estimated by Group ICA by Labounek, René, Bridwell, David A., Mareček, Radek, Lamoš, Martin, Mikl, Michal, Slavíček, Tomáš, Bednařík, Petr, Baštinec, Jaromír, Hluštík, Petr, Brázdil, Milan, Jan, Jiří

“…Electroencephalography (EEG) oscillations reflect the superposition of different cortical sources with potentially different frequencies. Various blind source…”
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Thickness related textural properties of retinal nerve fiber layer in color fundus images by Odstrcilik, Jan, Kolar, Radim, Tornow, Ralf-Peter, Jan, Jiri, Budai, Attila, Mayer, Markus, Vodakova, Martina, Laemmer, Robert, Lamos, Martin, Kuna, Zdenek, Gazarek, Jiri, Kubena, Tomas, Cernosek, Pavel, Ronzhina, Marina

“…Highlights • A texture analysis approach for assessment of the retinal nerve fiber layer thickness in color fundus images. • Suitable for computer-aided…”
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Detection of Glaucomatous Eye via Color Fundus Images Using Fractal Dimensions by J. Jan, R. Kolar

“…This paper describes a method for glaucomatous eye detection based on fractal description, followed by classification. Two methods for fractal dimensions…”
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