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1
Content available The Impact of the UGmax Soil Fertilizer on the Presence of Streptomyces Scabies on Edible Potato Tubers
Baranowska A., Zarzecka K., Gugała M., Mystkowska I.
Journal of Ecological Engineering
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2018
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Vol. 19, nr 3
68--73
EN
The purpose of the three-year-long field experiment was to identify the effect of the UGmax soil fertilizer (microbiological preparation) on the presence of Streptomyces scabies on tubers of two edible potato cultivars. The experiment was established using the randomized split-block method, in three replications, in central Poland (52°03’N; 22°3’E), on the soil consisting of loamy sands, slightly acidic and acidic. The examined factors included: 1st factor: edible potato cultivars (Satina and Typhoon), 2nd factor: doses and dates of application of the UGmax soil fertilizer (1. control object without UGmax; 2. UGmax applied to soil before planting tubers at a dose of 1.0 dm3∙ha-1; 3. UGmax applied to soil before planting tubers at a dose of 0.5 dm3∙ha-1, when the height of plants is about 10–15 cm, and in the flower buds making phase at a dose of 0.25 dm3∙ha-1; 4. UGmax before planting tubers at a dose of 1.0 dm3∙ha-1 and when the height of plants is about 10–15 cm, and in the flower buds making phase at a dose of 0.5 dm3∙ha-1; 5. UGmax when the height of plants is about 10–15 cm, and in the flower buds making phase at a dose of 0.5 dm3∙ha-1). Symptoms of common scab were assessed on a 9-point scale on 100 tubers randomly collected from different experiment objects. As a result of the study, it was demonstrated that treatments with the use of the UGmax soil fertilizer limited the occurrence of common scab on potato tubers and affected the average level of infestation of the sample and the average level of infestation of infested tubers.
2
Content available The Effect of Biostimulators on the Tastiness and Darkening of the Pulp of Raw and Cooked Potato Tubers
Mystkowska I., Baranowska A., Zarzecka K., Gugała M., Sikorska A.
Journal of Ecological Engineering
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2018
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Vol. 19, nr 5
116--121
EN
Field experiments were carried out in 2015–2017 with the use of bio-stimulators on an individual farm in Międzyrzec Podlaski. The experiment was based on a random split-plot method. The influence of two first factors was examined. The primary factor included three varieties of edible potato: Honorata, Jelly, Tajfun, and the secondary factor involved five ways of using bio-stimulators: Kelpak SL, Titanit, Green Ok, Brunatne Bio Złoto Cytokinin. The aim of the study was to evaluate the effect of bio-stimulators on the tastiness and darkening of the pulp of raw and cooked tubers after 10 minutes. The effectiveness of the application of individual bio-stimulators in the cultivation of edible potato varieties: Honorata, Jelly and Tajfun was compared with the control object (without using bio-stimulators) sprayed with water. The methods of using bio-stimulators did not change the tastiness and darkening of the pulp of raw tubers, but they had a significant impact on the darkening of the pulp of the cooked tubers. The raw and cooked pulp of the Honorata variety darkened the least, and the Jelly variety turned out to be the tastiest, scoring 8.0 points on a scale of 1–9 compared to the remaining varieties.
3
Content available Contents of Zinc, Copper and Manganese in Potato Tubers Depending on the Ways of Application of the Soil Fertilizer UGmax
Baranowska A., Zarzecka K., Gugała M., Mystkowska I.
Journal of Ecological Engineering
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2017
|
Vol. 18, nr 1
99--106
EN
The purpose of this study was to determine the influence of the soil fertilizer UGmax on zinc, copper and manganese contents in potato tubers. A three – year field experiment was carried out on soil which belonged to a very good rye complex. The experiment was established according to randomized split-plot method, in three replications. The following factors were examined: factor I: edible potato varieties (Satina and Typhoon), and factor II: doses and timing of UGmax application. As a result of conducted research, significantly smaller copper content in potato tubers was found, after usage of the soil preparation UGmax, in comparison with a control object, while zinc and manganese content continued to show only a downward trend. The influence of weather conditions and potato varieties on the copper cumulation in the dry mass of potato tuber was proved. An important influence of the factors of the experiment on the uptake of researched macroelements with the potato tuber yield was also shown.
4
Content available Czujnik kapilarny z rdzeniem domieszkowanym jonami samaru
Baranowska A., Żmojda J., Kochanowicz M., Miluski P., Dorosz D.
Szkło i Ceramika
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2016
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R. 67, nr 1
10--13
PL
W artykule przedstawiono czujnik światłowodowy wykorzystujący szklane włókno kapilarne, wyposażone w luminescencyjny rdzeń. Na rdzeń światłowodu zaproponowano szkło krzemianowe domieszkowane jonami samaru, zapewniające selektywną absorpcję promieniowania w zakresie 550-720 nm. Konstrukcja czujnika pozwala na pomiar stężenia roztworów, zaprezentowany na przykładzie roztworu Rodaminy B (RhB) w zakresie stężeń 0,01 - 0,15% ww. W wyniku metody sumowania sygnałów z dwóch pasm luminescencji uzyskano czułość pomiaru na poziomie -275•103 %-1. Otrzymane wyniki wskazują, że opracowana konstrukcja optrody może posłużyć jako kompaktowy czujnik luminescencyjny do ciągłego pomiaru właściwości roztworów.
EN
The paper presents optical fiber sensor based on an optical fiber capillary with a luminescent side ribbon. Siliceous core was doped with Sm3+ ions which ensure multi colour luminescence in visible spectrum (550-720 nm). The special fibre construction allows to measure concentration of Rhodamine B (RhB) solution in rage of 0.01 - 0.15% ww. The sensitivity was obtained by using combination of measurements at 564 nm and 601 nm wavelengths and it reached -275•103 %-1. The use of certain wavelengths at measurement procedure allows to obtain the increase of selectivity and sensitivity of optrode. The results allow to reach the conclusion that the designed optrode has the ability to be used for construction of compact luminescent sensors, measuring selected properties of the solutions.
5
Content available Efficacy of Herbicides in Potato Crop
Baranowska A., Mystkowska I., Zarzecka K., Gugała M.
Journal of Ecological Engineering
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2016
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Vol. 17, nr 1
82--88
EN
The experiment was conducted on slightly acidic soil classified as very good rye complex. The aim of the study was to assess the impact of plant–care procedures with the use of herbicides and their mixtures on the number and weed species composition in the field of three edible potato cultivars: Satina, Tajfun and Cekin. The weed infestation was determined at two dates: before the row closure and before tuber harvest. The most effective in decrease of weed infestation, before the row closure as well as before the harvesting of the tubers, appeared to be variations in which herbicides mixtures were used: Command 480 EC 0.2 l ha-1 + Dispersive Afalon 450 SC 1.0 l ha-1 and Stomp 400 SC 3.5 l ha-1 + Dispersive Afalon 450 SC 1.0 l ha-1. According to the conducted researches, the potato cultivars did not have significant effect on weed infestation marked at the beginning and at the end of vegetation.
6
Content available Effect of Some Herbicides Application on Nitrates (V) Content in Potato Tubers
Zarzecka K., Gugała M., Dołęga H., Mystkowska I., Baranowska A., Sikorska A., Głuszczak B.
Journal of Ecological Engineering
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2016
|
Vol. 17, nr 3
198--202
EN
A field experiment was carried out in the Agricultural Experimental Station Zawady (52°03’ N; 22°33’E), owned by the Siedlce University of Natural Sciences and Humanities in 2005–2007. The research was designed as a two factors randomized block with three replicates. The factors examined in the experiment included two potato varieties – Irga and Balbina and four weed control methods combined mechanical and chemical for herbicides application: Plateen 41,5 WG (metribuzin + flufenacet), Racer 250 EC (fluorochloridone), Sencor 70 WG (metribuzin), and control object – mechanical weeding before and after potato sprouting. The study was designed to test the influence of weed control methods on nitrates content in consumption potato tubers. The nitrates (V) content depended on the weed control methods, varieties and weather conditions throughout the growing season. The highest nitrates (V) content was determined when weeds were controlled mechanically and chemically using Sencor 70 WG. The study results demonstrated that Balbina had a higher concentration of nitrates (V) compared with Irga.
7
Content available The Effect of Agrotechnical Factors on the Potassium Content and its Removal by Potato Tubers
Zarzecka K., Gugała M., Mystkowska I., Sikorska A., Baranowska A.
Journal of Ecological Engineering
|
2015
|
Vol. 16, nr 4
180--184
EN
A 3-year field experiment covered two methods of soil tillage, conventional and sim-plified, as well as the following herbicide options: Plateen 41,5 WG, Plateen 41,5 WG + Fusilade Forte 150 EC, Plateen 41,5 WG + Fusilade Forte 150 EC + adjuvant Atpolan 80 EC, Barox 460 SL, Barox 460 SL + Fusilade Forte 150 EC, Barox 460 SL + Fusilade Forte 150 EC + adjuvant Atpolan 80 EC and control object – mechanical weeding. Potassium content and its removal by potato tubers significantly depended on soil tillage methods, weed control methods and research years. More potassium was contained in tubers harvested from conventional tillage compared with the re-duced tillage. Herbicides applied in the potato field significantly decreased potassium content in tubers compared with the control object. Simplifications of soil tillage de-creased potassium accumulation in potato tubers compared with the conventional till-age. Significant changes were also observed in content of potassium and its removal by 1 tonne tubers between the experimental years.
8
Content available Content and uptake of selected trace elements by weeds in potato to cultivation under different conditions of soil tillage and weed control methods
Zarzecka K., Gugała M., Baranowska A.
Journal of Ecological Engineering
|
2014
|
Vol. 15, nr 4
131--136
EN
The study utilized data from a field experiment carried out at the Experimental Station in Zawady owned by the University of Natural Sciences and Humanities in Siedlce in the years 2005–2007. The experimental factors included two soil tillage systems and seven weed control methods in potato. Iron, copper and zinc in weeds were deter- mined with the AAS method. The trace element content in weed dry matter before row closure of potato depended significantly on soil tillage methods (excluding Cu), weed control methods and weather conditions, and, prior to tuber harvest, on soil tillage and weather conditions during the growing season. The uptake of Fe, Cu, and Zn by weeds from the area of 1 hectare depended on the experimental factors, weed biomass and weed chemical composition.
9
Content available Inverse problem for determination of the bubble size spectrum
Baranowska A., Klusek Z.
Hydroacoustics
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2014
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Vol. 17
7--16
EN
The aim of this paper is a presentation of problems that might arise during determination of the bubble size spectrum in the sea using an inverse acoustics method. The mathematical model is introduced and limits of its numerical solution are discussed. Theoretical considerations lead to ill-posed system of integral equations and the system of linear equations resulting from a discretization process is solved using the Tikhonov regularization method. A mathematical model is tested for a power-law bubble size distribution. Some examples of theoretical studies related to this problem are provided. Practical applications of the bubble population determination algorithm on the basis of collected in situ empirical data concerning sound speed and attenuation are given.
10
Content available Numerical investigations of the nonlinear waves generation in a bubble layer
Baranowska A.
Hydroacoustics
|
2012
|
Vol. 15
7-12
EN
The purpose of the paper was to conduct numerical investigations of the nonlinear wave generation in a layer with uniformly distributed mono-size spherical bubbles. The mathematical model and examples of results of theoretical studies of this problem are presented. The mathematical model of the pressure propagation in the bubbly liquid layer is constructed using the linear non-dissipative wave and the Rayleigh-Plesset equations. The Commander and Prosperetti model is employed to compute the phase sound speed in the bubble layer. The spectra of transmitted and reflected waves are studied and the amplitudes of selected frequency harmonics of these waves examined.
11
Content available Theoretical Studies of Nonlinear Generation Efficiency in a Bubble Layer
Baranowska A.
Archives of Acoustics
|
2012
|
Vol. 37, No. 3
287-294
EN
The aim of the paper is a theoretical analysis of propagation of high-intensity acoustic waves throughout a bubble layer. A simple model in the form of a layer with uniformly distributed mono-size spherical bubbles is considered. The mathematical model of the pressure wave’s propagation in a bubbly liquid layer is constructed using the linear non-dissipative wave equation and assuming that oscillations of a single bubble satisfy the Rayleigh-Plesset equation. The models of the phase sound speed, changes of resonant frequency of bubbles and damping coefficients in a bubbly liquid are compared and discussed. The relations between transmitted and reflected waves and their second harmonic amplitudes are analyzed. A numerical analysis is carried out for different environmental parameters such as layer thicknesses and values of the volume fraction as well as for different parameters of generated signals. Examples of results of the numerical modeling are presented.
12
Content available Numerical modeling of the nonlinear wave propagation in a bubble layer
Baranowska A.
Hydroacoustics
|
2011
|
Vol. 14
9-16
EN
The aim of the paper is a theoretical analysis of acoustic waves propagation through a bubble layer. The mathematical model of the pressure propagation in bubbly liquid layer is constructed by the linear non-dissipative wave and the Rayleigh-Plesset equations. The acoustic pressure field inside the layer, the reflected and transmitted waves, and suitable power spectral density are studied. Numerical analysis is carried out for different layer thicknesses, different values of physical parameters and generated signals. Some results of numerical investigations are also presented.
13
Content available Pressure field in a plane layer
Baranowska A.
Hydroacoustics
|
2010
|
Vol. 13
9-16
EN
The paper presents results of analytical and numerical investigations of a plane acoustic waves propagation through a plane layer surrounded by another medium. The waves generation problem is discussed. The mathematical model of the pressure propagation in the layer is proposed. Propagated through the layer changes in pressure, the reflected and transmitted waves were studied. Some results of numerical investigations are presented.
14
Content available Modeling of the acoustic waves propagation in non-homogeneous medium
Baranowska A.
Hydroacoustics
|
2009
|
Vol. 12
1-8
EN
The aim of the paper is theoretical analysis of acoustic waves propagation in medium which are not homogeneous. The paper presents mathematical model and some results of numerical investigations. The mathematical model was built on the basis of the KZK equation. To solve the problem numerically the finite-difference method was applied. The on-axis pressure and power spectrum density were analysed both in homogeneous and non-homogeneous medium
15
Content available Modeling of nonlinear generation in a bubble layer
Baranowska A., Klusek Z.
Hydroacoustics
|
2009
|
Vol. 12
9-16
EN
The paper presents a numerical approach to modelling the linear and nonlinear scattering at a layer of bubbles. Numerical studies of noncoherent scattering using a Monte Carlo method that can cope with various effects of propagation inside of a bubbles layer such as boundary reflections, scattering anisotropy, sound dispersion, sound attenuation and time dependence are performed. Based on Rayleigh-Plesset bubble's oscillation equation, the propagation and backscattering of signals at bubble population of different size spectra is analyzed. Propagated through the layer and backscattering changes in the signal spectra are studied and modeled according to the properties of bubble populations similar as in the sea.
16
Content available Modeling of the finite amplitude plane wave propagation in non-dissipative medium
Baranowska A.
Hydroacoustics
|
2008
|
Vol. 11
11-18
EN
The paper presents results of theoretical analysis of the finite amplitude plane wave propagation problem. The case of harmonic plane wave propagation in non-dissipative medium was considered. The mathematical model and some results of numerical investigations are presented. The mathematical model was built on the basis of one-dimensional continuity equation, equation of motion in differential form and state equation. The finite difference method was applied to solve the problem numerically. The pressure changes and harmonic pressure amplitude changes were analysed. The results of computer calculations were compared with solution of the Burgers equation.
17
Content available Harmonic generation from a finite amplitude wave circular source
Baranowska A.
Hydroacoustics
|
2007
|
Vol. 10
9-16
EN
The finite amplitude wave propagation problem for circular source was considered. The paper presents mathematical model and some results of theoretical investigations. The problem was considered as an axial symmetric one. The mathematical model was built on the basis of the Khokhlov – Zabolotskaya – Kuznetsov (KZK) equation. To solve this equation the Fourier series expansion and finite-difference method were applied. The pressure harmonic amplitudes as a function of distance form the source and waveform were examined. Influence of discrete model parameters on accuracy of numerical calculations was investigated.
18
Content available remote Scheduling algorithms for Virtual Output Queuing switches
Baranowska A., Kabaciński W.
Electronics and Telecommunications Quarterly
|
2007
|
Vol. 53, No 3
252-272
EN
In this article we have given an overview of different scheduling algorithms for virtual output queuing switches. We have also proposed three new scheduling algorithms for VOQ switches called Hierarchical Round-Robin Matching (HRRM), Matching Matching with Random Selection (MMRS) and Maximal Matching with Round-Robin Selection (MMRRS). Evaluation of the proposed algorithms was performed under Bernoulli and bursty packet arrivals with uniform and non-uniform distributions to output ports. Performance evaluation of the proposed algorithm under different traffic models is given and compared with other well-known algorithms. The simulation results show that MMRRS and HRRM achieves 100% throughput and low MTD for high loads.
19
Content available remote Numerical approximations of parabolic functional differential equations on unbounded domains
Baranowska A.
Annales Societatis Mathematicae Polonae. Seria 1: Commentationes Mathematicae
|
2007
|
Vol. 47, [Z] 2
193-205
EN
The paper is concerned with initial problems for nonlinear parabolic functional differential equations. A general class of difference methods is constructed. A theorem on the error estimate of approximate solutions for difference functional equations of the Volterra type with an unknown function of several variables is presented. The convergence of explicit difference schemes is proved by means of consistency and stability arguments. It is assumed that given function satisfy nonlinear estimates of the Perron type with respect to a functional variable. Results obtained in the paper can be applied to differential integral problems and equations with retarded variables. Numerical examples are presented.
20
Zjawiska zachodzące w starzejącym się papierze
Podsiadło H., Baranowska A.
Przegląd Papierniczy
|
2006
|
R. 62, nr 7
389-391
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