Temat: quantitative measurements - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: An application of a Raman scattering analyzer for the determination of natural gas composition at a processing plant
Autorzy:: Włodek, T.
Kuczyński, Sz.
Smulski, R.
Polański, K.
Powiązania:: https://bibliotekanauki.pl/articles/298597.pdf
Data publikacji:: 2016
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: Raman spectroscopy
natural gas measurements
quantitative measurements
qualitative measurements
measurement technical assumptions
composition analysis
Opis:: The development of conventional and unconventional natural gas reservoir management includes continuous monitoring of hydrocarbon exploitation processes and its impact on the reservoir and environment. Raman spectroscopy, which allows for the identification of reservoir fluids (including natural gas) components can be a very promising method for the application of providing a quick, non-invasive, nondestructive analysis. The proposed in this paper measurement methods are focused on the use of:– a laboratory cell (autoclave) with sapphire window mounted on a specially prepared bypass pipeline;– a dedicated Raman probe mounted to the available installed stub pipe;– the construction of a special measurement cell. The article presents the basic technical assumptions for measurements of the composition of natural gas with the use Raman spectroscopy.
Źródło:: AGH Drilling, Oil, Gas; 2016, 33, 3; 619-627
2299-4157
2300-7052
Pojawia się w:: AGH Drilling, Oil, Gas
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Identification of the eddy current method features in the implementation of computer simulation algorithms for controlling the characteristics of the food production equipment parts
Autorzy:: Zashchepkina, N. M.
Zdorenko, V. G.
Sebko, V.
Markina, O. M.
Powiązania:: https://bibliotekanauki.pl/articles/367785.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: computer simulation
food production modernization
quantitative indicator
coefficients influence
errors of aggregate measurements
symulacja komputerowa
produkcja żywności
modernizacja produkcji
wskaźnik ilościowy
błędy pomiarowe
Opis:: Purpose: The purpose of this article is to study the theoretical provisions of the operation of a vortex device in the implementation of a non-contact method of controlling the details of brewing equipment using computer simulation algorithms. Design/methodology/approach: The theoretical positions of thermal ECT operation with a copper product are obtained, which is controlled while maintaining a constant value of the magnetic field frequency f1 = 70.0 Hz, with small values of the generalized parameter x≤1.1 and increasing the parameter x due to the increase in the frequency of thermal ECT, that is, at x≥3.5. Findings: On the basis of computer simulation algorithms the results of the joint measuring control of diameter d, electrical resistance ρ and temperature t of the sample made of copper (in the temperature range from 20-160°C) and the results of determination of thermally dependent thermal ECT signals with the sample of equipment details and the values of specific normalized values that relate the ECT signals to the physical and mechanical characteristics of the samples of the equipment being monitored. Research limitations/implications: Product diameters range is 5 mm to 50 mm. The lower boundary is limited by the frequency of the magnetic field f = 20 Hz and the upper boundary by the diameter of the frame of the thermal eddy current transformer transducer is 50 mm. Perspective positions of work require further development in the direction of extending the limits of control of geometrical parameters of the samples due to the use of automated control systems based on overhead eddy current transformer transducers. Practical implications: The practical value of the work is to increase the overall likelihood of control of the parameters of brewing equipment parts by increasing its instrumental component Di, due to the reduction of measurement errors due to instrumental techniques and on the basis of computer modelling algorithms for three-parameter control of parts of brewing equipment, electrical and temperature parameters, allows to obtain the value of the overall control probability Dz = 0.998. Originality/value: The originality of the article is the study of the theoretical provisions of the eddy current transformer transducer and the implementation of a non-contact method of controlling the details of brewing equipment using computer simulation algorithms that take into account the modes of joint three-parameter control: at high values of the generalized parameter x (with three-parameter surface control), at small values of x (while controlling the value of the average cross section geometry, electrical, temperature settings) at a fixed frequency magnetic field (get information on the diameter d, resistivity ρ and temperature t with a certain depth of penetration of the magnetic field in the sample Δ).
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2019, 97, 1; 31-40
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Pomiar emisji amoniaku ze źródeł rolniczych metodą mikrometeorologicznej dozymetrii pasywnej
Application of micrometeorological method of passive dosimetry to monitoring ammonia emission from agricultural sources
Autorzy:: Kierończyk, M.
Marcinkowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/338941.pdf
Data publikacji:: 2004
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: amoniak
dozymetria pasywna
emisja
próbnik strumieniowy
ammonia emission
manure
quantitative measurements
Opis:: Amoniak coraz częściej jest zaliczany do głównych zanieczyszczeń pochodzenia antropogenicznego. Głównym źródłem tego gazu jest działalność rolnicza, a zwłaszcza produkcja zwierzęca. Od połowy lat 90. XX w. w Oddziale IMUZ w Elblągu rozpoczęto badania emisji amoniaku ze źródeł rolniczych znajdujących się na otwartych przestrzeniach (składowiska nawozów naturalnych, pola nawożone obornikiem i gnojówką). Do pomiarów zastosowano jeden z kilku wariantów mikrometeorologicznej metody dozymetrii pasywnej. Metoda ta, pierwotnie opracowana i testowana w krajach skandynawskich, została wdrożona do dalszych badań sprawdzających. W opracowaniu przedstawiono zarys metodyki oraz zalety i wady stosowanej techniki pomiarowej. W porównaniu z innymi metodami, opisywana w pracy ma niewątpliwe zalety, zwłaszcza podczas badań terenowych. Należą do nich między innymi stosunkowo mały koszt tzw. próbników strumieniowych oraz możliwość wielokrotnego ich użytkowania, łatwość wykonania pomiarów i operacji bez potrzeby stosowania skomplikowanej aparatury elektronicznej.
Atmospheric ammonia is more and more often identified as a major pollutant of anthropogenic origin. The main source of the gas is agricultural activity, especially animal production. Most losses of ammonia nitrogen occur at various stages of agricultural management and during the utilisation of animal excreta as manure. During storage of manure and application to the land, considerable amounts of ammonia are released. Contribution of gaseous ammonia to eutrophication and acidification of natural ecosystems is not discussed here. Until recently an assessment of ammonia emission has been based on different calculation which made the results highly uncertain with an error even between ± 30-40 % [Buijsman i in., 1987]. In the European Union ammonia emission from agriculture was considered an environmental problem and intensive research works were initiated to elaborate precise and accurate methods to measure the emission. In the middle of the nineties of the XX century a study on ammonia emissions from manure storage and from fields treated with solid and liquid manure was undertaken in the Division of the Institute for Land Reclamation and Grassland Farming in Elbląg . One of several variations of micrometeorological method of passive dosimetry was applied for measurements. The method scientifically described and tested in Scandinavian countries was introduced to further studies. This paper presents the outline of methodology together with the advantages and shortcomings of the technique. In comparison with other methods this one has some advantages, especially in the field measurements. Good points of the method are: low cost of the flux samplers, possibility of multiple use, easy-to-operate measurements without using electronic apparatus.
Źródło:: Woda-Środowisko-Obszary Wiejskie; 2004, T. 4, z. 2a; 537-546
1642-8145
Pojawia się w:: Woda-Środowisko-Obszary Wiejskie
Dostawca treści:: Biblioteka Nauki

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