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Search results for: ABSORPTION OF GAMMA RADIATION
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Investigation of OSL signal of resistors from mobile phones for accidental dosimetry
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Measurements of high-temperature emission spectra of highly irradiated LiF:Mg,Cu,P (MCP-N) TL detectors
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Luminescent properties of Tb and Eu activated AxB1-xAlO3 (A = Y, Lu, Gd; B = Lu; x = 0, 0.5, 1) mixed oxides crystals prepared by micro-pulling-down method
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Analysis of TL and OSL kinetics of lithium aluminate
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Study of radioluminescence in LiMgPO4 doped with Tb, B and Tm
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Radial distribution of dose within heavy charged particle tracks – Models and experimental verification using LiF:Mg,Cu,P TL detectors
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Thermoluminescence kinetics of undoped and doped (Ti, Cu, Ce) lithium aluminate crystals
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Thermoluminescent response of differently doped lithium magnesium phosphate (LiMgPO4, LMP) crystals to protons, neutrons and alpha particles
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Detection of neutrons with LiF fluorescent nuclear track detectors
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Thermoluminescence and optically stimulated luminescence studies on LiMgPO4 crystallized by micro pulling down technique
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Evaluation of the relative thermoluminescence efficiency of LiF:Mg,Ti and LiF:Mg,Cu,P TL detectors to low-energy heavy ions
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Comparative studies on OSL properties of LiMgPO4:Tb,B powders and crystals
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Investigations of the influence of Am-241 photons on the measured alpha particle response of luminescent materials
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OSL and RL of LiMgPO4 crystals doped with rare earth elements
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Position of LiF:Mg,Cu,P TL peak as an alternative method for ultra-high-dose dosimetry
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Radio-photoluminescence of highly irradiated Lif:Mg,Ti and Lif:Mg,Cu,P detectors
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New OSL detectors based on LiMgPO4 crystals grown by micro pulling down method. Dosimetric properties vs. growth parameters
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Spectral characteristic of high-dose high-temperature emission from LiF:Mg,Cu,P (MCP-N) TL detectors
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Analysis of TL and OSL kinetics in lithium magnesium phosphate crystals
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Composite thermoluminescent detectors based on the Ce3+ doped LuAG/YAG and YAG/LuAG epitaxial structures
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Social Convergence in Nordic NUTS-3 Regions
PublicationGeographical proximity, common historical roots and collaboration within the Nordic Council make the Nordic countries, often wrongly treated as monoliths. However, in reality, Nordic regions differ in terms of broadly defined social and economic development. Issues concerning the standard of living are one of the priorities of the Helsinki Treaty signed by Nordic countries. The main goal of this paper is to analyze the existence...
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Pathological and physiological high-frequency oscillations in focal human epilepsy
PublicationHigh-frequency oscillations (HFO; gamma: 40-100 Hz, ripples: 100-200 Hz, and fast ripples: 250-500 Hz) have been widely studied in health and disease. These phenomena may serve as biomarkers for epileptic brain; however, a means of differentiating between pathological and normal physiological HFO is essential. We categorized task-induced physiological HFO during periods of HFO induced by a visual or motor task by measuring frequency,...
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Dysfunctional prefrontal cortical network activity and interactions following cannabinoid receptor activation.
PublicationCoordinated activity spanning anatomically distributed neuronal networks underpins cognition and mediates limbic-cortical interactions during learning, memory, and decision-making. We used CP55940, a potent agonist of brain cannabinoid receptors known to disrupt coordinated activity in hippocampus, to investigate the roles of network oscillations during hippocampal and medial prefrontal cortical (mPFC) interactions in rats. During...
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Human verbal memory encoding is hierarchically distributed in a continuous processing stream
PublicationProcessing of memory is supported by coordinated activity in a network of sensory, association, and motor brain regions. It remains a major challenge to determine where memory is encoded for later retrieval. Here we used direct intracranial brain recordings from epilepsy patients performing free recall tasks to determine the temporal pattern and anatomical distribution of verbal memory encoding across the entire human cortex. High...
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Direct determination of paraquat herbicide by square-wave voltammetry by two-step transfer mechanism at heterogeneous boron-doped carbon nanowall electrodes
PublicationBoron-doped carbon nanowalls (B:CNW) versus boron-doped diamond (BDD) materials were investigated for the effective electrochemical detection of highly toxic herbicide paraquat (PQ). Depending on the surface morphology and functional groups of BDD and B:CNWs, the electrochemical absorption and detection of the target analyte PQ revealed different detection mechanisms. The surface absorption mechanism was mainly observed for BDD,...
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Ryszard Katulski prof. dr hab. inż.
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Engineering Au nanoparticle arrays on SiO2 glass by pulsed UV laser irradiation
PublicationWe study semi-regular arrays of Au nanoparticles (NP) obtained via UV laser irradiation of thin Au films on glass substrate. The NP structures are prepared from films of a thickness up to 60 nm produced by discharge sputtering or pulsed laser deposition, and annealed by nanosecond laser pulses at 266 or 308 nm, respectively, at fluencies in the range of 60-410 mJ/cm2. For the rare- and close-packed NP structures, consistent description...
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Comment on "Quantitative comparison of analysis methods for spectroscopic optical coherence tomography"
PublicationIn a recent paper by Bosschaart et al. [Biomed. Opt. Express 4, 2570 (2013)] various algorithms of time-frequency signal analysis have been tested for their performance in blood analysis with spectroscopic optical coherence tomography sOCT). The measurement of hemoglobin concentration and oxygen saturation based on blood absorption spectra have been considered. Short time Fourier transform (STFT) was found as the best method for...
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Synthesis and Spectroscopic Properties of New Bis-tetrazoles
PublicationSyntheses of N,N'-phenyltetrazole podands link with aliphatic chains containing oxygen, nitrogen and sulphur atoms, are described. The complexing properties of these compounds towards metal cations (Fe2+, Cu2+, Zn2+, Co2+, Ni2+) were investigated by absorption and infrared spectroscopy. The UV-Vis titrations were performed to estimate the stability constant values of the respective complexes with Cu2+ ion. Changes in UV-Vis absorption...
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rigid polyurethane foams modified with selected nanofillers
PublicationThe nanofillers: natural montmoryllonite (MMT) - Bentonite, natural MMT modified with a quaternary ammonium salt - Cloisite30B, has been used in rigid polyurethane foams (PUFs). The influence of fillers amounts on processing parameters, physical-mechanical properties (density, water absorption, brittleness and compression strength) and thermal properties (thermal stability, fire behaviours) of such foams has been analysed. The...
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Overview of Metamaterials-Integrated Antennas for Beam Manipulation Applications: The Two Decades of Progress
PublicationMetamaterials (MMs) are synthetic composite structures with superior properties not found in naturally occurring materials. MMs have gained massive attention over the last two decades because of their extraordinary properties, such as negative permittivity and permeability. These materials enable many applications in communication subsystems, especially in the field of antenna design, to enhance gain, bandwidth, and efficiency,...
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Two-photon perimetry utilizing picosecond laser
PublicationAge-related impairments are becoming more and more severe for aging societies. The sensory organ diseases are particularly troublesome as they exclude seniors from their everyday activity. Therefore, maintaining good quality eyesight is essential for normal functioning. New medical therapies help restrain age-related changes, but still, monitoring is essential to the treatment process. Humans do not have the natural ability to...
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Problematyka dotycząca zapewnienia fotostabilności substancji leczniczych w postaciach leku
PublicationUV and visible radiation may influence on the stability of some active pharmaceutical ingredients and in a consequence destabilizes such medicinal products, causes changesin its physicochemical properties also with negative pharmacological and sometimes even toxic effects. For this reason it is important to conduct the routine testing photostability. The knowledge of chemistry and technology as well as some methods of...
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FINITE GROUND CPW-FED UWB ANTENNA OVER THE METALLIC CYLINDRICAL SURFACES
PublicationThe investigation of finite ground coplanar fed ultra-wideband (UWB) antenna and the influence of its curvature and the proximity of circular metallic screen on the reflection coefficients and radiation characteristics is presented. The antenna is composed of two circular coplanar strips which enclose slot aperture of similar shape and is designed on a thin and flexible substrate which allows its bending. The antenna configuration...
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Analytical chemistry in technical approaches: immobilization of biosorbent waste containing heavy metals in cemented materials
PublicationAn ecologically safe and economically justified method of stabilization of the used biosorbents was developed. Sorbent contaminated with heavy metals has been successfully solidified/stabilized using a hydraulic binder. The test results indicated that up to 1% of the biosorbent residue used could be added without compromising the compressive strength of the mortar. The compressive strength of the modified mortars did not change...
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X-ray diffraction (XRD) of silica-coated bismuth oxide (Bi2O3) and gadolinium oxide (Gd2O3) structures
Open Research DataData contain results from X-ray diffraction (XRD) measurements of pristine Bi2O3 and Gd2O3 structures using Aeris diffractometer (Malvern Panalytical, Malvern, UK) with Cu-Kα radiation (λ = 1.544 Å)
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X-ray diffraction (XRD) of silica-coated bismuth oxide/gadolinium oxide (Bi2O3+Gd2O3) structures
Open Research DataData contain results from X-ray diffraction (XRD) measurements of pristine Bi2O3 and Gd2O3 structures using Aeris diffractometer (Malvern Panalytical, Malvern, UK) with Cu-Kα radiation (λ = 1.544 Å)
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XRD patterns of the V2O5 nanorods after thermal treatment under reducing atmosphere
Open Research DataThe DataSet contains the XRD patterns of V2O5 nanorods after thermal treatment under a reducing atmosphere. Samples were annealed at 450C for 2, 20, and 40h under a reducing atmosphere (94% Ar, 6% H2).
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Investigation of plasmon resonance in a silver nanoparticles
Open Research DataSilver nanostructures were prepared on borosilicate glass (Corning 1737F) substrates. Thin Ag films (1–9 nm thickness) were deposited using a table-top dc magnetron sputtering coater (EM SCD 500, Leica) in pure Ar plasma (argon, Air Products 99.999%). The Ag target was of 99.99% purity, the rate of layer deposition was about 0.4 nm·s−1, and the incident...
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A Compact Circularly Polarized Antenna With Directional Pattern for Wearable Off-Body Communications
PublicationThis letter presents a geometrically simple and compact circularly polarized (CP) antenna with unidirectional radiation characteristics for off-body communications. The proposed antenna is based on a microstrip line monopole extension from a coplanar waveguide (CPW) and a protruded stub from one side of the coplanar ground plane along the length of the monopole. The orthogonal components of equal amplitudes required for circular...
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The Implementation of the Taxonomic Spatial Measure of Development in the Analysis of Convergence in the Standard of Living
PublicationThe main goal of this paper is to analyse the existence of the social convergence in the European Union between 19952012. The social convergence refers to a reduction in the dispersion of the standard of living across countries. A taxonomic spatial measure of development was used as the standard of living approximation. The use of the new approach proposed by E. Antczak allowed for an explanation of the disparities in the analysed...
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XRD patterns of ammonium vanadate nanocrystals
Open Research DataThe DataSet contains the XRD patterns of ammonium vanadate nanobelts obtained by the hydrothermal method with different conditions. The results show that the structure and phase compositions of samples dependent on reaction conditions.
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XRD patterns of VO2 and V6O13 nanostructures
Open Research DataThe DataSet contains the XRD patterns of VO2 and V6O13 thin films deposited on a silicon substrate. The as-prepared thin films were annealing under a reducing atmosphere (94% Ar, 6% H2) at 500, 600 and 700C for 10h.
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XRD patterns of V2O5 thin film morphology dependent on substrate types
Open Research DataThe DataSet contains the XRD patterns of the V2O5 thin film structure dependent on substrate types. The as-prepared thin films were deposited on alumina, zirconium, zirconium oxide and metallic vanadium substrate, then was annealing under an oxidizing atmosphere at 600C for 10h.
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XRD patterns of V2O5 nanostructures
Open Research DataThe DataSet contains the XRD patterns of vanadium pentaoxide nanostructures obtained by the sol-gel with different annealing temperatures under synthetic air. The results show that crystallinity dependent on the annealing temperature.
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XRD patterns of VO2 and V2O3 nanostructures
Open Research DataThe DataSet contains the XRD patterns of VO2 and V2O3 nanostructures obtained by the sol-gel with different reaction conditions. The information about xerogel powder synthesis is described in the Journal of Nanomaterials. The xerogel powder was annealing under argon atmosphere in the temperature range 400-1000C. The results show that the morphology...
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XRD patterns of vanadium oxide nanostructures on silicon substrate obtained by V2O5 recrystallization
Open Research DataThe DataSet contains the XRD patterns of vanadium oxide nanostructures on silicon substrates obtained by recrystallization of V2O5 thin films between 800-1200°C under synthetic air. The thin films were obtained by the sol-gel method. The information about sol synthesis is described in the Journal of Nanomaterials.
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XRD patterns of VO2 and V2O3 thin films obtained at 500°C
Open Research DataThe DataSet contains the XRD patterns of VO2 and V2O3 thin films obtained by the sol-gel method. The information about sol synthesis is described in the Journal of Nanomaterials. The thin films with different thicknesses (3-9 AsP layers) were deposited on a silicon substrate and were annealing at 500°C under an argon atmosphere.
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XRD patterns of vanadium oxide nanostructures on quartz glass substrate obtained by V2O5 recrystallization
Open Research DataThe DataSet contains the XRD patterns of vanadium oxide nanostructures on quartz glass substrates obtained by recrystallization of V2O5 thin films between 800-1200°C under synthetic air. The thin films were obtained by the sol-gel method. The information about sol synthesis is described in the Journal of Nanomaterials.
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XRD patterns of VO2 and V2O3 thin films obtained at 700°C
Open Research DataThe DataSet contains the XRD patterns of VO2 and V2O3 thin films obtained by the sol-gel method. The information about sol synthesis is described in the Journal of Nanomaterials. The thin films with different thicknesses (5-9 AsP layers) were deposited on a silicon substrate and were annealing at 700°C under an argon atmosphere.