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    Wyświetlanie 1-8 z 8
    Tytuł:
    The use of the Circular Hough Transform for counting coins
    Autorzy:
    Gomółka, Z.
    Żesławska, E.
    Twaróg, B.
    Paszkiewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/114081.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    Hough transform
    image detection
    segmentation
    digital image processing
    edge detection
    Opis:
    The paper presents the circular Hough transform in the process of detecting and counting coins. The issues of linear and circular Hough transform are discussed. An algorithm for counting coins in a three-dimensional image using the discrete Hough space is demonstrated. Moreover, the results of the application for detecting and counting coins in a static image and video stream are presented. Observations of histograms for HSV and RGB color palettes, for different camera resolutions and various parameters of image segmentation, edge detection and smoothing filter have been made.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 9; 434-437
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement of methane flux in the selected area of the Polish Outer Carpathians – preliminary research
    Autorzy:
    Twaróg, A.
    Guzy, P.
    Sechman, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/184497.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    emission
    atmosphere
    soil
    Opis:
    Methane emissions associated with the hydrocarbon-generation process occurring in sedimentary basins are considered to be one of two types of geologic sources of methane emissions to the atmosphere. Current methane emissions releasing from geological sources amount 45–60 Tg CH 4 yr –1. The measured values of flux migrating from soil into the atmosphere are influenced by a series of factors, e.g. porosity and permeability of overlying layers, occurrence of cracks and faults, atmospheric pressure, seasonal temperature fluctuations and presence of methanotrophic bacteria. The latter, as a result of methane consumption, may trigger negative flux values (Etiope 2015). Previously, the methane emission measurements in the Polish Outer Carpathians were carried out with a method of static chambers (Sechman & Dzieniewicz 2009). The studies presented in the paper consisted in initial methane emission measurements by flux meter. Their purpose was to examine distribution of methane fluxes on the land surface, as well as change in emission along with depth, omitting the ‘screening’ near-surface zone. The studies were carried out in a small area of the Carpathian petroleum oil region, nearby Rymanów, between October and December 2015. Measurement of the methane fluxes were performed with application of a portable flux meter (West System 2012). The device performs one measurement per second on average, recording concentration changes in time (ppm/s). Average measurement time was 360 seconds. When a high methane concentration was registered, gas samples were collected from the accumulation chamber and directed to a detailed chromatographic analysis (field sampling and analytical procedure – see Sechman & Dzieniewicz 2009). There were 137 measurements taken on 87 stands in total, recording emission from the land surface, and emission with application of 1-m deep holes – in order to omit the “screening” near-surface zone (Sechman & Dzieniewicz 2009). The emission was recorded along the 1000- m long profile, where samples of soil gas were collected previously, and around the drill holes covered with soil. Furthermore, during the process of drilling 4 boreholes, there were CH 4 test emission measurements taken examining change in methane flux with depth (to 10 m). In case of the KB-7 borehole, measurements were taken 1 and 22 days after the drilling. The natural emission was recorded on 70 measuring stations. The flux was identified only in 30% of the performed measurements. Negative emission was predominant within the examined area (68% of all measurements), with an average value of −3.8 mg∙m −2 ∙d −1. Average value of the positive flux reached 3 mg∙m −2 ∙d −1. Range of the measured flux values is comprised within the scope from −5.2 mg∙m −2 ∙d −1 to 14.9 mg∙m −2 ∙d −1. Emission measurements with the additional holes were carried out at 37 positions. Fluxes with positive values were identified in 6 of them, while the negative values were recorded in 4. Range of the measured flux values with the additional hole was from −6.4 mg∙m −2 ∙d −1 to 2 mg∙m −2 ∙d −1 ; average negative and positive flux values are as follows, respectively: −2.3 mg∙m −2 ∙d −1 and 1.3 mg∙m −2 ∙d −1. Within the examined area, methane emission from the land surface, and to the depth of 1 m, was identified only in 30% of measurements. The measurements are characterized by low values, from −6.4 mg∙m −2 ∙d −1 to 14.9 mg∙m −2 ∙d −1. Results of test emission measurements recorded in subsequently drilled depth intervals, performed for 4 drilling boreholes. For the KB-6, KB-7, KB-8 and KB-10 boreholes, average values of methane emission from subsequent depth intervals were as follows, respectively: 49.2, 68.6, 3.5 and 1.5 mg∙m −2 ∙d −1. These results are higher than values of natural emission measured on the land surface or with application of holes to 1 m. The highest emission values were recorded for the KB-7 borehole. A detailed distribution of CH 4 flux values was correlated with a lithology and molecular composition of gas collected from the accumulation chamber in three depth intervals (3.5 m, 5.5 m and 10 m). Results of the gas molecular analysis prove that the source of methane emission is characterized by both microbial and endogenous origin. It is assumed that occurrence of components heavier than methane in the samples, arises from their depth origin (Saunders et al. 1991). An increase of methane concentration in intervals related to occurrence of shales – may suggest its recent origin. It also needs to be noticed that C 1 /C 2 ratio values (from 207 to 807) increase along with depth, what may prove prevailing share of microbial methane. When 24 hours passed after drilling the KB-7 borehole, the emission value dropped to 0.6 mg∙m −2 ∙d −1, and after about three weeks, during an hourly emission measurement, a positive flux of 0.1 mg∙m −2 ∙d −1 was observed in time 0–470 second and a negative flux of −0.05 mg∙m −2 ∙d −1 was observed in time 480–2660 second. Furthermore, small concentrations of ethane (0.006 ppm) and ethylene (0.005 ppm) were identified in gas sample collected after 22 days. The emissions study conducted in the Rymanów area (Outer Carpathians) indicates the mixed source of methane. In order to determine the detailed methane source, it would be necessary to perform an analysis of the carbon isotopic composition in the samples taken. The low emission values measured on the land surface results from the fact that the emissions were suppressed by the sealing overburden layer. The measurements taken 1 day and then 22 days after drilling – in the KB-7 stabilized borehole, show a decline in emissions value. This may result from an insignificant inflow of hydrocarbons from the depth, bacterial oxidation of these hydrocarbons, and from the influx of air to the borehole.
    Źródło:
    Geology, Geophysics and Environment; 2016, 42, 1; 135-136
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Korelacja modeli matematycznych parametrów sensorycznych ze strukturą kinematyczną manipulatora typu ręka człowieka HAND-K3
    Correlation of the sensory parameters mathematic models with the kinematic structure of the hand-k3 hand type manipulator
    Autorzy:
    Handke, A.
    Twaróg, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/387421.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    model matematyczny
    manipulator
    sterowanie
    mathematical model
    control
    Opis:
    Praca dotyczy funkcyjnego powiązania zbioru modeli matematycznych sieci czujników nacisku rozmieszczonych w grupach na modułach palców manipulatora, z konfiguracją jego połączeń ruchowych w czasie. Opracowane modele matematyczne wyprowadzonych parametrów sensorycznych, w układzie współrzędnych ustalonego środka części dłoniowej manipulatora, posłużyły do przeprowadzania serii pomiarów i doświadczeń oraz wyznaczenia kluczowych kryteriów wykorzystanych przy optymalizacji struktur kinematycznych manipulatorów typu ręka człowieka. Celem pracy jest stworzenie zbioru funkcji i przekształceń znanych zależności z zakresu teorii manipulatorów, koniecznych do wyznaczenia reguł sterowania ruchem modułów palców prototypu manipulatora typu ręka człowieka HAND-K3 w kontakcie z badanymi obiektami.
    This paper refers to functional connection of set of mathematical models of tactile sensor array disposed in groups of each finger phalanx in the prototype manipulator with the configuration of its motor connections in time. Correlation of previously elaborated mathematic model of the sensor array in meta- carpus’s coordinate system of the manipulator’s hand served for conducting series of experiments, measurements and establishing key criteria used in the optimizing process of the hand type manipulator’s kinematic structure. The main goal of this work is to generate a set of functions and transformations common in the theory of manipulator’s, essential in designating rules in controlling the movement of finger modules in the HAND-K3 hand type manipulator prototype in interaction with examined objects.
    Źródło:
    Acta Mechanica et Automatica; 2010, 4, 3; 40-46
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gases in the near-surface zone of the reclaimed Barycz municipal waste landfill – a case study from southern Poland
    Autorzy:
    Kopera, Paulina A.
    Sechman, Henryk
    Twaróg, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/27310119.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    landfill
    emission
    surface distribution
    methane
    carbon dioxide
    biogas
    hydrocarbons
    Opis:
    The formation of biogas at municipal landfills and the significant emission of greenhouse gases from these facilities into the environment were the main reasons for analyzing the molecular composition of soil gas in the near-surface zone at the reclaimed part of the Barycz municipal waste landfill. The relations between the studied components (methane, carbon dioxide, light hydrocarbons and non-hydrocarbon components) and impact of the magnitude of recorded concentrations of methane and carbon dioxide on their emission to the atmosphere were evaluated. Two profiles were determined, along which 41 soil and landfill gas samples were taken at 20-meter intervals. At the same time, emissions were measured at each sampling point using a static chamber with a portable fluxometer. Chromatographic analysis showed that the concentrations of methane and carbon dioxide fluctuated in the ranges: 2.1 ppm – 76 vol% and 0.04 ppm – 11 vol%, respectively. Relatively high concentrations of these gases were determined at many of the measurement points, and this was particularly evident at the A-A’ profile, indicating stronger biochemical processes in this part of the landfill, or lateral migration of methane from the neighbouring stage II of the landfill, where biogas extraction is currently taking place. In addition, significant correlations between methane, carbon dioxide, and oxygen were demonstrated, indicating ongoing methane fermentation processes. Based on the study, it can be concluded that the southern part of the A-A’ profile is an optimal place to locate a degassing well from which biogas production could be used. However, the research is only preliminary and, it will be necessary to extend the soil gas tests before the final decision on the location of the well is made. Moreover, it has been shown that the concentrations of methane and carbon dioxide measured at points located outside the landfill were low. This means that generated biogas probably does not migrate beyond the boundaries of reclaimed waste landfill, but this will need to be confirmed by performing additional soil gas tests inside and outside the landfill area. The preliminary assessment of the effectiveness of the reclamation carried out was confirmed by the negligible values of the measured methane and carbon dioxide emissions on the surface.
    Źródło:
    Geology, Geophysics and Environment; 2023, 49, 2; 101--121
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    From Light to Heavy Nuclear Systems, Production and Decay of Fragments Studied with Powerful Arrays
    Autorzy:
    Casini, G.
    Morelli, L.
    Barlini, S.
    Piantelli, S.
    D'Agostino, M.
    Baiocco, G.
    Marchi, T.
    Abbondanno, U.
    Ademard, G.
    Appannababu, S.
    Bini, M.
    Bonnet, E.
    Borderie, B.
    Bougault, R.
    Bruno, M.
    Chbihi, A.
    Cinausero, M.
    Degerlier, M.
    Fabris, D.
    Frankland, J.
    Gelli, N.
    Gramegna, F.
    Gruyer, D.
    Gulminelli, F.
    Kordyasz, A.
    Kozik, T.
    Kravchuk, V.
    Kulig, P.
    Le Neindre, N.
    Lopez, O.
    Maurenzig, P.
    Olmi, A.
    Pasquali, G.
    Pârlog, M.
    Poggi, G.
    Rivet, M.
    Rosato, E.
    Sosin, Z.
    Spadaccini, G.
    Stefanini, A.
    Twarog, T.
    Valdrè, S.
    Vient, E.
    Raduta, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402639.pdf
    Data publikacji:
    2015-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    25.70.Gh
    25.70.Pq
    25.70.Mn
    29.40.-n
    Opis:
    Reactions between heavy-ions at various energy regimes produce many nuclear fragments which can be populated in highly excited states. The study of these fragments, detected at the end of their particle decay, is important to investigate nuclear forces and structure effects. In recent years there have been many efforts to extend these studies towards the drip-lines, i.e. to systems far from the β-stability valley, by using accelerated radioactive beams. The development of such infrastructures is accompanied by the development of more powerful detectors and associated electronics, capable to identify ions with very different sizes and kinetic energies. Here we give two examples which show how advanced arrays can contribute to the studies on nuclear phenomena. The examples come from the European FAZIA collaboration and from recent campaigns with the GARFIELD apparatus, the latter in operation at the INFN Legnaro Laboratory (Italy) where the SPES RIB facility is under construction.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 5; 1548-1551
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emission Measurements of Geogenic Greenhouse Gases in the Area of “Pusty Las” Abandoned Oilfield (Polish Outer Carpathians)
    Autorzy:
    Guzy, P.
    Pietrzycki, D.
    Świerczewska, A.
    Sechman, H.
    Twaróg, A.
    Góra, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/124987.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    greenhouse gas
    methane
    carbon dioxide
    Outer Carpathians
    Opis:
    The Carpathians may play a significant role as a supplier of greenhouse gases to the atmosphere. Unfortunately, most of the discovered oil and gas deposits are recently only historical objects. An example is the Sękowa-Ropica Górna-Siary oil deposit located in the marginal part of the Magura Nappe where oil had been extracted in dug wells until the mid XX century. One of such extraction sites is the “Pusty Las” oilfield. In that area, 10 methane and carbon dioxide emission measurement sites were located, among which 4 in dried dug wells and 6 in dig wells still filled with oil and/or water. Dynamics of methane and carbon dioxide concentration changes were measured with the modified static chambers method. Gas samples were collected immediately after the installation of the chamber and again, after 5 and 10 minutes. In the case of reclaimed or dry dug wells, static chamber was installed directly at the ground surface. In wells still filled with oil and/or water the chamber was equipped with an “apron” mounted on special sticks. The dynamics of concentrations changes varied from -0.871 to 119.924 ppm∙min-1 for methane and from -0.005 to 0.053% obj∙min-1 for carbon dioxide. Average methane emission was 1.9 g∙m-2∙d-1 and that of carbon dioxide was 26.95 g∙-2∙d-1. The measurements revealed that an abandoned oil field supplies significant amounts of greenhouse gases to the atmosphere although the emission of methane is lower than that measured e.g. in mud volcanoes located in various parts of the world.
    Źródło:
    Journal of Ecological Engineering; 2017, 18, 4; 100-109
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka wybranych właściwości gleb i zbiorowisk roślinnych na terenach rekultywowanych i pozostawionych sukcesji po byłej Kopalni Siarki „Grzybów”
    Characteristic of selected soil properties and plant communities on reclaimed sites and sites left for succession on post-exploitation areas of Grzybów sulfur mine
    Autorzy:
    Krzaklewski, W.
    Pietrzykowski, M.
    Likus, J.
    Pająk, M.
    Twaróg, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/372640.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    kopalnia
    rekultywacja
    siarka
    sukcesja
    zalesienia
    mine
    reclamation
    sulfur
    succession
    afforestation
    Opis:
    Badano gleby i roślinność na terenach zrekultywowanych i pozostawionych sukcesji na obszarach poeksploatacyjnych Kopalni Siarki „Grzybów”. Nie stwierdzono fitotoksycznego zasiarczenia gleb. Zbiorowiska obydwu kategorii powierzchni różnił skład i budowa. Zbiorowiska z sukcesji, ze względu na większą różnorodność, powinny stanowić uzupełnienie rekultywacji leśnej.
    The soil and vegetation in area reclaimed and left the succession were re-searched on the post-mining areas KS Grzybów. There was not detected the phytotoxic sulfation of soils. Plant communities composition were different for both categories. The communities appeared in the way of succession should be complementary in the forest reclamation process because of their bigger diversity.
    Źródło:
    Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski; 2016, 161 (41); 78-86
    1895-7323
    Pojawia się w:
    Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Barwa nasion sosny zwyczajnej a podatność siewek na pasożytniczą zgorzel
    Cvet semjan sosny obyknovennojj i immunitet sejancev protiv paraziticheskikh ozhogov
    Colour of Scotch pine seed and susceptibility of seedlings to parasitic damping - off
    Autorzy:
    Grzywacz, A.
    Twarog, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/814142.pdf
    Data publikacji:
    1977
    Wydawca:
    Polskie Towarzystwo Leśne
    Źródło:
    Sylwan; 1977, 121, 07
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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