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Anna Nakonieczna  - - - 
Top co-authors See all
Wojciech Skierucha

86 shared publications

Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland

Andrzej Wilczek

30 shared publications

Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland

Agnieszka Szypłowska

23 shared publications

Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland

Marcin Kafarski

18 shared publications

Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland

Grzegorz Janik

6 shared publications

Wroclaw University of Environmental and Life Sciences, Institute of Environmental Protection and Development, Wroclaw, Poland

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Publication Record
Distribution of Articles published per year 
(2013 - 2018)
Total number of journals
published in
 
3
 
Publications
Article 8 Reads 0 Citations Dark matter cosmic string in the gravitational field of a black hole Łukasz Nakonieczny, Anna Nakonieczna, Marek Rogatko Published: 13 March 2018
Journal of Cosmology and Astroparticle Physics, doi: 10.1088/1475-7516/2018/03/024
DOI See at publisher website
Article 0 Reads 7 Citations Electrical impedance measurements for detecting artificial chemical additives in liquid food products Anna Nakonieczna, Bartosz Paszkowski, Andrzej Wilczek, Agnie... Published: 01 August 2016
Food Control, doi: 10.1016/j.foodcont.2016.01.044
DOI See at publisher website
Article 0 Reads 1 Citation Detection of Atmospheric Water Deposits in Porous Media Using the TDR Technique Anna Nakonieczna, Marcin Kafarski, Andrzej Wilczek, Agnieszk... Published: 13 April 2015
Sensors, doi: 10.3390/s150408464
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
Investigating the intensity of atmospheric water deposition and its diurnal distribution is essential from the ecological perspective, especially regarding dry geographic regions. It is also important in the context of monitoring the amount of moisture present within building materials in order to protect them from excessive humidity. The objective of this study was to test a constructed sensor and determine whether it could detect and track changes in the intensity of atmospheric water deposition. An operating principle of the device is based on the time-domain reflectometry technique. Two sensors of different plate volumes were manufactured. They were calibrated at several temperatures and tested during field measurements. The calibration turned out to be temperature independent. The outdoor measurements indicated that the upper limits of the measurement ranges of the sensors depended on the volumes of the plates and were equal to 1.2 and 2.8 mm H2O. The respective sensitivities were equal to 3.2 × 10−3 and 7.5 × 10−3 g·ps−1. The conducted experiments showed that the construction of the designed device and the time-domain reflectometry technique were appropriate for detecting and tracing the dynamics of atmospheric water deposition. The obtained outcomes were also collated with the readings taken in an actual soil sample. For this purpose, an open container sensor, which allows investigating atmospheric water deposition in soil, was manufactured. It turned out that the readings taken by the porous ceramic plate sensor reflected the outcomes of the measurements performed in a soil sample.
Article 2 Reads 3 Citations Application of a Coaxial-Like Sensor for Impedance Spectroscopy Measurements of Selected Low-Conductivity Liquids Agnieszka Szypłowska, Anna Nakonieczna, Andrzej Wilczek, Bar... Published: 30 September 2013
Sensors, doi: 10.3390/s131013301
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
The paper presents a coaxial-like sensor operating in the 20 Hz–2 MHz frequency range used to determine the electrical properties of selected liquids of low electrical conductivity. Examined materials included low-concentrated aqueous solutions of potassium chloride, sodium chloride and trisodium citrate, which are common food additives. Impedance spectra of the measurement cell filled with particular liquids were obtained and analyzed using the electrical equivalent circuit approach. The values of physical quantities and parameters describing the equivalent circuit components, including a constant phase element, were calculated for each sample. The applied sensor was also calibrated for electrical conductivity measurements up to 8 mS/m. The constant phase element parameters differed among the studied solutions and concentrations. This may provide a basis for a detection method of small amounts of compounds, such as food additives in low-concentrated aqueous solutions. To demonstrate the potential of the presented method, samples of purchased mineral water and a flavored drink containing various additives were tested.
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