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Tytuł:
Multicriteria optimization of manufacturing processes taking into account the validity criteria
Autorzy:
Plonka, S.
Lorek, L. R.
Powiązania:
https://bibliotekanauki.pl/articles/99875.pdf
Data publikacji:
2016
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
multicriteria optimization
manufacturing processes
manufacturing cost
product quality
Opis:
In the paper a method is presented of the best variant selection of a manufacturing process of a rotor to open end spinning machine with use of original optimization proceeding based on adopted criteria, taking into consideration their importance. Unit manufacturing cost and five criteria of manufacturing quality were taken as criteria to the assessment. The assessment criteria resulted from calculations and measurements were normalized. Knowledge of experts was used to determine importance of the criteria taken to the assessment. Each from the experts had built his own importance matrix of the assessment criteria, comparable in pairs, using the Saaty’s method. The weights of individual criteria were determined on the basis of cumulative matrix. In the next stage of the proceeding, normalized decisions were created by raising each assessment to a power equal to corresponding weight. In the last stage of the proceeding, a single optimal ordering comprising the smallest s-th components of the individual decisions d1, d2, …, dm was created. A variant which corresponds to the largest component of the optimal ordering is assumed as the best variant.
Źródło:
Journal of Machine Engineering; 2016, 16, 4; 31-48
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effects of Hearing Protectors on Auditory Localization: Evidence From Audio-Visual Target Acquisition
Autorzy:
Bolia, R. S.
McKinley, R. L.
Powiązania:
https://bibliotekanauki.pl/articles/90772.pdf
Data publikacji:
2000
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
auditory localization
hearing protection
visual search
ochrona słuchu
środowisko pracy
lokalizacja źródła dźwięku
Opis:
Response times (RT) in an audio-visual target acquisition task were collected from 3 participants while wearing either circumaural earmuffs, foam earplugs, or no hearing protection. Analyses revealed that participants took significantly longer to locate and identify an audio-visual target in both hearing protector conditions than they did in the unoccluded condition, suggesting a disturbance of the cues used by listeners to localize sounds in space. RTs were significantly faster in both hearing protector conditions than in a non-audio control condition, indicating that auditory localization was not completely disrupted. Results are discussed in terms of safety issues involved with wearing hearing protectors in an occupational environment.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2000, 6, 3; 309-319
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical investigations for the verification of shear centre and deflection of sigma section by back propagation neural network using Python
Autorzy:
Janani, S.
Thenmozhi, R.
Jayagopal, L. S.
Powiązania:
https://bibliotekanauki.pl/articles/230800.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sieć neuronowa sztuczna
propagacja
sekcja sigma
centrum ścinania
ugięcie
konstrukcja dachu
artificial neural network
propagation
sigma section
shear centre
deflection
roof construction
Opis:
The most important challenges in the construction field is to do the experimentation of the designing at real time. It leads to the wastage of the materials and time consuming process. In this paper, an artificial neural network based model for the verification of sigma section characteristics like shear centre and deflection are designed and verified. The physical properties like weight, depth, flange, lip, outer web, thickness, and area to bring shear centre are used in the model. Similarly, weight, purlin centres with allowable loading of different values used in the model for deflection verification. The overall average error rate as 1.278 percent to the shear centre and 2.967 percent to the deflection are achieved by the model successfully. The proposed model will act as supportive tool to the steel roof constructors, engineers, and designers who are involved in construction as well as in the section fabricators industry.
Źródło:
Archives of Civil Engineering; 2019, 65, 2; 181-192
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biological nutrient removal using a novel five-step continuous flow activated sludge process technology
Autorzy:
Abualhai, S.
Naseer, R.
Xiwu, L.
Powiązania:
https://bibliotekanauki.pl/articles/208183.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
nitrogen removal
activated sludge process
chemical oxygen demand
sewage
nutrient removal
biological processes
nutrient concentrations
usuwanie azotu
chemiczne zapotrzebowanie tlenu
ścieki
biologiczne usuwanie składników odżywczych
proces biologiczny
stężenie substancji odżywczych
metoda osadu czynnego
proces osadu czynnego
Opis:
An anaerobic-anoxic/oxic (AA/O) five-tank biological process called five-step continuous flow activated sludge process (FSCFASP) was developed to force the oscillation of organic matter and nutrient concentrations in process reactors. The run scheme and schematic diagram of FSCFASP was described. The run cycle was divided into two symmetrical half cycles with eight periods during each cycle. The duration of each period was established according to biological process requirements. The optimal running times of the periods were 90, 60, 60, 30, 90, 60,6 0 and 30 min at the HRT of 16 h, air/water ratio of 35% and SRT of 21 day at the temperature range of 19-23 °C. The optimized system achieved 88.09±1.43%, 90.33±2.9%, 68.83±5.34% and 87.67±2.9% of the chemical oxygen demand, NH4+-N, TN, and TP removal efficiencies, respectively, during a 11-month operation with the effluent meeting the Chinese sewage discharge standard GB18918-2002 (level A). Simultaneous nitrification and denitrification phenomena were observed in the tank one which is important to reduce the quantity of aeration and the duration of a next anoxic state. Compared with other existing technologies, this system achieved high nitrogen and phosphorus removal without equipment of sludge and mixed liquor return. Thus, it is effective for reducing energy consumption.
Źródło:
Environment Protection Engineering; 2013, 39, 3; 165-184
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The modification of the raceway profile in the double row slewing bearing
Autorzy:
Kania, L.
Śpiewak, S.
Pytlarz, R.
Powiązania:
https://bibliotekanauki.pl/articles/950120.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
slewing bearings
contact zone
fem analysis
Opis:
The slewing bearings are applied in heavy working machines and operated in extreme conditions. A characteristic feature of these bearings are a high load which determining a large deflection of a contact zone rolling element - raceway. This phenomenon combined with the effects of a bearing clearance causes a significant increase in a contact angle of the bearing. This in turn causes displacement of the contact zone to an undesirable position. In the construction of slewing bearing is applied of a large value of the osculation ratio. This leads to occur of large sizes of the contact zone identified in a radial cross-section. The sizes are comparable to values of the radius of the ball. The contact zone is type of quasi-linear. Effects of changes the position of the contact zone in the double-row ball slewing bearing has been presented in the paper. The raceway profile for such bearing consists of the arc section changing in the radial section. When the contact zone includes a change point of curvature of the raceway profile it comes to a concentration of a contact stress, and this is unfavourable for operation of the bearing. In order to eliminate this phenomenon to the profile introduced a transition curve. For this purpose was selected a clothoid. The curve ensures a gradual change of curvature from the arc section of the profile to the zero curvature of the straight profile section. The raceway profile becomes the smooth curve of the second rank. In the article are presented a numerical model of the contact zone for the double-row ball slewing bearing and the distributions of a pressure in the contact zone for the ordinary and modified raceway profiles. The calculation results have been presented as graphs of the distributions of the pressure along the contact zone. It has been shown that the introduction modification of the raceway profile eliminates the concentration of the pressure along the contact zone profile. The results obtained can be used during design of the raceway profiles of the double-row ball slewing bearing.
Źródło:
Journal of KONES; 2016, 23, 1; 139-146
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy feedback linearizing controller and its equivalence with the fuzzy nonlinear internal model control structure
Autorzy:
Boukezzoula, R.
Galichet, S.
Foulloy, L.
Powiązania:
https://bibliotekanauki.pl/articles/929632.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sterowanie rozmyte
sterowanie odwrotne
sterowanie wewnętrzne
fuzzy control
inverse control
feedback linearization
internal model control
Opis:
This paper examines the inverse control problem of nonlinear systems with stable dynamics using a fuzzy modeling approach. Indeed, based on the ability of fuzzy systems to approximate any nonlinear mapping, the nonlinear system is represented by a Takagi-Sugeno (TS) fuzzy system, which is then inverted for designing a fuzzy controller. As an application of the proposed inverse control methodology, two popular control structures, namely, feedback linearization and Nonlinear Internal Model Control (NIMC) are investigated. Moreover, the paper points out that, under some conditions, both of the control structures are equivalent and naturally implement a Smith predictor in the presence of time delays.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2007, 17, 2; 233-248
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The possibilities of underground CO2 storage in the Zaosie Anticline
Możliwości wykorzystania antykliny Zaosia do podziemnego składowania CO2
Autorzy:
Marek, S.
Dziewińska, L.
Tarkowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/217054.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
składowanie CO2
struktura geologiczna
poziomy wodonośne
Polska
CO2 storage
geological structure
aquifer
Polska
Opis:
The Zaosie Anticline is located not far from Łódź and Bełchatów. It is one of the most interesting geological structures for underground CO2 storage in Poland and thus it requires a detailed study. The paper presents the geological characteristics of the Zaosie Anticline against the background of the geological structure of the region as well as the potential aquifers for CO2 storage, including their suitability for CO2 storage. The Zaosie Anticline was examined by seismic profiles and four deep boreholes. The following formations suitable for underground CO2 storage were analysed: Lower Jurassic Borucice and Komorowo formations and Lower Triassic Baltic Formation. The primary aquifer for CO2 storage in the Zaosie Anticline is the Baltic Formation of Scythian age. The secondary aquifer is the Upper Pliensbachian Komorowo Formation. The primary Lower Triassic aquifer was surveyed by three deep boreholes. Its volumetric storage capacity is approximately 340 million tons, and the TDS content in the formation water reaches 250g/dcm3. The aquifer is sealed directly by a thick series of clay-carbonate evaporite rocks and a thick packet of Middle and Upper Triassic and Jurassic deposits. Its disadvantage is a considerable depth to this level, which affects the petrophysical characteristics of reservoir rocks. The secondary aquifer, the Komorowo Formation, shows better petrophysical parameters of rocks in terms of CO2 storage, the depth to the aquifer is adequate, but its disadvantage is a low content of TDS in the formation water and the likelihood of contact with surface waters. The Borucice Formation aquifer is not recommended for CO2 storage because it occurs at a small depth and possibly contacts with meteoric waters. The Zaosie structure is of interest to the Bełchatów Power Station. Relatively near the structure (up to 50 km) are also the Dalkia Łódź ZEC SA plants, and the following plants are located a little further (up to 100 km): KCW Warta SA, Kozienice Power Plant SA, ZE PAK SA (Power Plant Group Company, Adamów), Vattenfall Heat Poland SA - (Siekierki and Żeran in Warsaw) and LaFarge Cement Poland SA (Małogoszcz).
Antyklina Zaosia znajduje się w bliskiej odległości od Łodzi i Bełchatowa i jest jedną z bardziej interesujących struktur geologicznych do składowania CO2 w Polsce, dlatego też dokonano szczegółowego jej opracowania. Przedstawiono charakterystykę geologiczną antykliny Zaosia na tle budowy geologicznej regionu, szczegółową budowę geologiczną, charakterystykę potencjalnych poziomów do składowania CO2 oraz przydatność rozważanych poziomów zbiornikowych do podziemnego składowania dwutlenku węgla. Antyklina Zaosia została rozpoznana profilami sejsmicznymi i czterema głębokimi otworami wiertniczymi. Do składowania CO2 przeanalizowano poziomy zbiornikowe: dolnojurajskie (formacja borucicka i formacja komorowska) oraz dolnotriasowy (formacja Bałtycka). Pierwszoplanowym poziomem zbiornikowym dla składowania CO2 w antyklinie Zaosia jest poziom formacji bałtyckiej scytyku, natomiast drugoplanowym poziomem zbiornikowym jest poziom formacji komorowskiej górnego pliensbachu. Pierwszoplanowy dolnotriasowy poziom zbiornikowy został rozpoznany trzema głębokimi otworami, jego wolumetryczna pojemność składowania wynosi około 340 mln ton, a mineralizacja wód złożowych osiąga 250 g/dcm3. Jest on uszczelniony bezpośrednio grubym kompleksem skał ilasto-wapnisto-ewaporytowych oraz miąższym pakietem skał triasu środkowego i górnego oraz jury. Jego mankamentem jest znaczna głębokość, co wpływa ujemnie na cechy petrofizyczne skał zbiornikowych. Drugoplanowy poziom zbiornikowy formacji komorowskiej posiada lepsze parametry petrofizyczne skał pod kątem składowania CO2, ma odpowiednią głębokość zalegania, a jego mankamentem jest mała mineralizacja wód złożowych i prawdopodobieństwo kontaktu z wodami powierzchniowymi. Poziom zbiornikowy formacji borucickiej nie jest rekomendowany do składowania CO2 z uwagi na jego małą głębokość i możliwy kontakt z wodami infiltracyjnymi. Struktura Zaosia stanowi przedmiot zainteresowania Elektrowni w Bełchatowie. W bliskiej odległości (do 50 km) od niej znajdują się zakłady Dalkia Łódź ZEC SA, a w nieco dalszej (do 100 km): KCW Warta SA, Elektrownia Kozienice SA, Zespół Elektrowni PAK SA (Adamów), Vattenfall Heat Poland SA - (Siekierki i Żerań w Warszawie), LaFarge Cement Poland SA (Małogoszcz).
Źródło:
Gospodarka Surowcami Mineralnymi; 2011, 27, 4; 89-107
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantification in frame semantics with binders and nominals of hybrid logic
Autorzy:
Kallmeyer, L.
Osswald, R.
Pogodalla, S.
Powiązania:
https://bibliotekanauki.pl/articles/103893.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Podstaw Informatyki PAN
Tematy:
frame semantics
quantification
hybrid logic
Abstract Categorial Grammar
Opis:
This paper aims to integrate logical operators into frame-based semantics. Frames are semantic graphs that allow lexical meaning to be captured in a fine-grained way but that do not come with a natural way to integrate logical operators such as quantifiers. The approach we propose stems from the observation that modal logic is a powerful tool for describing relational structures, including frames. We use its hybrid logic extension in order to incorporate quantification and thereby allow for inference and reasoning. We integrate our approach into a type theoretic compositional semantics, formulated within Abstract Categorial Grammars. We also show how the key ingredients of hybrid logic, nominals and binders, can be used to model semantic coercion, such as the one induced by the begin predicate. In order to illustrate the effectiveness of the proposed syntax-semantics interface, all the examples can be run and tested with the Abstract Categorial Grammar development toolkit.
Źródło:
Journal of Language Modelling; 2017, 5, 2; 357-383
2299-856X
2299-8470
Pojawia się w:
Journal of Language Modelling
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of ADC Resolution on Low-Frequency Electrical Time-Domain Impedance Spectroscopy
Autorzy:
Namin, R. L.
Ashtiani, S. J.
Powiązania:
https://bibliotekanauki.pl/articles/221144.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electrical impedance spectroscopy
analogue-to-digital converter
Ramp signal
fast Fourier transform
Nyquist plot
Opis:
In this paper, the effect of the resolution of an analogue-to-digital converter (ADC) on the accuracy of timedomain low-frequency electrical impedance spectroscopy is examined. For the first time, we demonstrated that different wideband stimuli signals used for impedance spectroscopy have different sensitivities to the resolution of ADC used in impedance spectroscopy systems. We also proposed Ramp and Half-Gaussian signals as new wideband stimulating signals for EIS. The effect of ADC resolution was studied for Sinc, Gaussian, Half-Gaussian, and Ramp excitation signals using both simulation and experiments. We found that Ramp and Half-Gaussian signals have the best performance, especially at low frequencies. Based on the results, a wideband electrical impedance spectroscopy circuit was implemented with a high accuracy at frequencies bellow 10 Hz.
Źródło:
Metrology and Measurement Systems; 2017, 24, 2; 425-436
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of molybdenum addition on W-Ni-Fe based heavy alloys sintered with spark plasma sintering
Autorzy:
Prasad, B. S. L.
Annamalai, R.
Powiązania:
https://bibliotekanauki.pl/articles/200737.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tungsten heavy alloys
sintering
mechanical properties
fracture mode
ciężkie stopy wolframu
spiekanie
właściwości mechaniczne
tryb pękania
Opis:
Tungsten heavy alloys comprising tungsten, nickel and ferrous were modified, where molybdenum was added in varying weight proportions keeping the ratio of Ni: Fe (8:2) constant. The powders were mixed in a high-energy ball mill and were further fabricated using the spark plasma sintering (SPS) method at a peak temperature of 1000°C with heating rate of 100°C/min. The details of the microstructure and mechanical properties of these various alloy compositions were studied. With the increasing weight composition of the Mo in the alloy, the relative density of the alloy increased with a significant improvement in all the mechanical properties. The yield strength (YS), ultimate tensile strength (UTS) and hardness improved significantly with increase in the proportion of Mo; however, a reduction in elongation percentage was observed. The maximum strength of 1250 MPa UTS was observed in the alloy with a Mo proportion of 24%. The heavy alloy unmixed with Mo has shown distinct white and grey regions, where white (W) grain is due to tungsten and grey region is a combinatorial effect of Ni and Fe. Upon addition of Mo, the white and gray phase differences started to minimize resulting in deep gray and black ‘C’-phase structures because of homogenization of the alloy. The main fracture mode found during this investigation in the alloys was inter-granular mode.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 2; 167-172
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular Dynamics in Chlorine Compounds Using X-Ray Thermal Parameters and Nuclear Quadrupole Resonance Data
Autorzy:
Ramu, L.
Banu, R.
Rani, S.
Chandramani, R.
Powiązania:
https://bibliotekanauki.pl/articles/2046846.pdf
Data publikacji:
2006-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
76.60.Gv
Opis:
Molecular dynamics (torsional frequencies) in several chlorine compounds were evaluated on the basis of X-ray thermal parameter data and nuclear quadrupole resonance data using Bayer's and Brown's approximation. It was found that the values obtained in both cases are in good agreement. The above approach is a good illustration of the supplementary nature of the data from X-ray studies in relation to nuclear quadrupole resonance studies of compounds in solid state.
Źródło:
Acta Physica Polonica A; 2006, 109, 6; 775-779
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Spectral Subtraction Based Algorithm for Real-time Noise Cancellation with Application to Gunshot Acoustics
Autorzy:
Ramos, A. L. L.
Holm, S.
Gudvangen, S.
Otterlei, R.
Powiązania:
https://bibliotekanauki.pl/articles/226624.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
gunshot acoustics
noise cancellation
spectral suppression
counter sniper systems
Opis:
This paper introduces an improved spectral subtraction based algorithm for real-time noise cancellation, applied to gunshot acoustical signals. The derivation is based on the fact that, in practice, relatively long periods without gunshot signals occur and the background noise can be modeled as being short-time stationary and uncorrelated to the impulsive gunshot signals. Moreover, gunshot signals, in general, have a spiky autocorrelation while typical vehicle noise, or related, is periodic and exhibits a wider autocorrelation. The Spectral Suppression algorithm is applied using the pre-filtering approach, as opposed to post-filtering which requires a priori knowledge of the direction of arrival of the signals of interest, namely, the Muzzle blast and the Shockwave. The results presented in this work are based on a dataset generated by combining signals from real gunshots and real vehicle noise.
Źródło:
International Journal of Electronics and Telecommunications; 2013, 59, 1; 93-98
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Time-Resolved Emission from Semiconductor Microcavities
Autorzy:
Kłopotowski, Ł.
Viña, L.
Kavokin, A.
Dang, L. S.
André, R.
Powiązania:
https://bibliotekanauki.pl/articles/2038372.pdf
Data publikacji:
2004-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.36.+c
71.55.Gs
78.47.+p
Opis:
We present a time-resolved study of the light emission of a CdTe-based microcavity. In the nonlinear regime, under high excitation conditions, in the strong coupling regime, we observe pronounced beats of the intensity of the photoluminescence arising from the bottleneck region of the exciton-polariton band. These beats are very sensitive to the excitation density and vanish under weak pumping conditions. We attribute the beats to a new nonlinear coupling mechanism of optically active and dark crystal states, related to polariton-polariton scattering, which leads to mixing between bright and dark states.
Źródło:
Acta Physica Polonica A; 2004, 106, 3; 435-442
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-Replication Processes in Nanosystems of Informatics
Autorzy:
Węgrzyn, S.
Winiarczyk, R.
Znamirowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/908088.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
informatyka
nanosystem of informatics
biological nanosystem of informatics
technical nanosystem of informatics
self-replication
Opis:
Recent research on the nanotechnological processes of molecular products and object synthesis as well as research on the nanosystems of informatics, stimulates the development of technical systems of informatics. Until now, they have been used mainly for computational tasks when, similarly to biological organisms, they allowed the development of self-replicating products and complete objects. One can focus here on the model of a circulation of materials, information and energy in a biological cell, and a model of the self-replication phenomenon. In the model of materials, information and energy circulation, we can distinguish a multi-phase process of creating products which are later used for object construction. The first phase is a translation process based on information from mRNA, while the next one consists of post-translational modifications based on environmental interactions. The self-replication model presented in this paper refers to a self-replication of a material object together with its internal software, which had determined the object creation. The presented models of materials, information and energy circulation in a biological cell together with models of the self-replication phenomenon can be a basis for the design and development of technical systems of informatics capable of creating self-replicating products and objects.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2003, 13, 4; 585-591
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of influence of environmental conditions and natural gamma radiation for radon concentration measurements
Analiza wpływu warunków środowiskowych oraz naturalnej promieniotwórczości gamma na wyniki pomiarów koncentracji radonu
Autorzy:
Skupio, R.
Kowalska, S.
Jankowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/1835256.pdf
Data publikacji:
2018
Wydawca:
Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:
radon
environmental conditions
gamma radiation
spectrometry
warunki środowiskowe
promieniowanie gamma
spektrometria
Opis:
The influence of environmental conditions and natural gamma radiation of rocks nearby measurement points has been introduced in this paper to radon concentration measurements in soil air. Our studies helped to assess anomalies caused by major tectonic zones that occurring in the Carpathians. These anomalies, can be used for interpretation and location of potential zones for oil and gas industry. Environmental tests had to be conducted because of the introduction of new measurement methodology within evaluation of statistical measurement errors and specific tests conditions. Stationary work was carried out in a limited area nearby Bagrowa st., Krakow, fieldwork was carried out at the Cergowa Mountain–Krosno profile. The conducted research did not show the influence of air humidity, precipitation, air temperature, air pressure and natural radioactive elements (K-40, U-238 and Th232) on the measured radon anomalies. In this study RAD7 spectrometer with a soil probe was used.
W pracy przedstawiono wpływ warunków środowiskowych i naturalnej promieniotwórczości skał występujących w otoczeniu punktów pomiarowych, na wyniki badań koncentracji radonu w powietrzu glebowym. Badania radonu pozwalają na identyfikację anomalii powodowanych występowaniem głównych stref uskokowych w Karpatach, co może pomóc wyznaczyć lokalizację występowania obszarów o potencjale dla poszukiwań przemysłu naftowego. Konieczność przeprowadzenia testów związana jest z opracowaniem nowej metodyki, która wymagała oceny błędów pomiarowych oraz warunków, w jakich należy prowadzić badania. Prace stacjonarne wykonane zostały w obrębie ograniczonej powierzchni w Krakowie przy ul. Bagrowej, prace terenowe przeprowadzono na profilu Góra Cergowa–Krosno. Badania nie ukazały wpływu wilgotności powietrza, opadów atmosferycznych, temperatury powietrza, ciśnienia atmosferycznego oraz naturalnych pierwiastków promieniotwórczych (K-40, U-238, Th-232) na mierzone anomalie radonowe. Do przeprowadzenia badań wykorzystano aparaturę badawczą w postaci spektrometru RAD7 wraz z sondą do pomiarów gazu w powietrzu glebowym.
Źródło:
Nafta-Gaz; 2018, 74, 8; 584-591
0867-8871
Pojawia się w:
Nafta-Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł

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