Wszystkie pola: atmosphere monitoring - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Estimation of Slant Tropospheric Delays from GNSS Observations with Using Precise Point Positioning Method
Autorzy:: Savchuk, S.
Khoptar, A.
Powiązania:: https://bibliotekanauki.pl/articles/320603.pdf
Data publikacji:: 2018
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: Global Navigation Satellite Systems (GNSS)
atmosphere monitoring
precise point positioning method (PPP)
zenith tropospheric delay
slant tropospheric delay
Opis:: Global Navigation Satellite Systems give opportunities for atmospheric parameters analysis in behalf of solving many atmosphere monitoring tasks. The authors of this article demonstrated possibility of slant tropospheric delays determination with using precise point positioning method – PPP. The atmospheric parameters, retrieved from GNSS observations, including zenith tropospheric delays, horizontal gradients, and slant tropospheric delays, are analyzed and evaluated. It was obtained slant tropospheric delays, along the satellite path, for each satellite, at a certain elevation angle and azimuth, at each time, instead of obtaining a single zenith tropospheric delay composed of all visible satellites at one time. The results obtained proved that suggested method was correct.
Globalne systemy nawigacji satelitarnej ‒ GNSS ‒ dają możliwości analizy parametrów atmosferycznych do rozwiązywania wielu zadań związanych z monitorowaniem atmosfery. Autorzy tego artykułu zademonstrowali możliwość estymacji opóźnienia troposferycznego w kierunku do satelity za pomocą metody absolutnego precyzyjnego pozycjonowania ‒ PPP. Parametry atmosferyczne, uzyskane z obserwacji GNSS, w tym opóźnienie troposferyczne w kierunku zenitu, gradienty poziomy i opóźnienie troposferyczne w kierunku do satelity są analizowane i oceniane. Otrzymaliśmy opóźnienia troposferyczne w kierunku do satelity dla każdego satelity pod pewnymi kątami wzniesienia i azymutu w każdej chwili, zamiast uzyskać pojedyncze opóźnienie troposferyczne w kierunku zenitu złożone z wszystkich widzialnych satelitów naraz. Uzyskane wyniki wykazały, że sugerowana metoda była prawidłowa.
Źródło:: Annual of Navigation; 2018, 25; 253-266
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Health risk assessment related to hydrogen peroxide presence in the workplace atmosphere – analytical methods evaluation for an innovative monitoring protocol
Autorzy:: Mucci, Nicola
Dugheri, Stefano
Bonari, Alessandro
Farioli, Andrea
Rapisarda, Venerando
Garzaro, Giacomo
Cappelli, Giovanni
Arcangeli, Giulio
Powiązania:: https://bibliotekanauki.pl/articles/2116638.pdf
Data publikacji:: 2020-03-13
Wydawca:: Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:: environmental monitoring
occupational medicine
hydrogen peroxide
exposure scenario
airborne exposure
electrochemical sensor
Opis:: ObjectivesHydrogen peroxide (HP) accounts for 15% of the total global chemical revenue. According to the National Institute of Occupational Safety and Health, the HP concentration immediately dangerous to human life or health is 75 ppm. Operators exposed to HP should pay attention when choosing the monitoring technique that should be specific and sensitive enough to discriminate the exposure levels from background concentrations. In order to assess the long- and short-term exposure to HP in disinfection processes, the authors compared 6 industrial hygiene monitoring methods to evaluate their efficiency in measuring airborne HP concentrations.Material and MethodsAirborne HP concentrations were evaluated using an on-fiber triphenylphosphine solid-phase microextraction method, and they were compared with those obtained using a 13-mm Swinnex titanium oxysulfate filter holder and 4 portable direct-reading electrochemical sensors. A survey carried out in wood pulp bleaching, food and beverage disinfection processing, and in a hospital department to reduce the risk of spreading nosocomial infections, was performed during routine operations to access the risk of HP occupational exposure.ResultsThrough the generation of HP gaseous dynamic atmospheres (0.1–85 ppm), the authors evaluated the consistency of the results obtained using the 6 methods described. The monitoring campaigns showed that the increase in HP could be relatively high (until 67 ppm) in food and beverage processing.ConclusionsIn the authors’ opinion, the current 8-h time-weighted average limits of 1 ppm for HP do not reflect the actual risk; a short-term exposure limit would, therefore, provide a much better protection.
Źródło:: International Journal of Occupational Medicine and Environmental Health; 2020, 33, 2; 137-150
1232-1087
1896-494X
Pojawia się w:: International Journal of Occupational Medicine and Environmental Health
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Monitoring of Air Pollution in the Area Affected by the Storage of Primary Oil Refining Waste
Autorzy:: Strizhenok, Alexey V.
Ivanov, Andrey V.
Powiązania:: https://bibliotekanauki.pl/articles/1839556.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: environment
oil
oil sludge
sludge pond
air pollution
dispersion of pollutants
atmosphere
environmental mapping
Opis:: At present, monitoring of air pollution near industrial facilities is one of the most urgent tasks. Its implementation is a requirement of Article 42 of the Constitution of the Russian Federation and the basis for the ecological well-being of the population. This problem is especially critical for the production facilities located within residential areas or in close proximity to them. The scientific article presents the results of a monitoring study of the air pollution in a residential area exposed to the negative impact of the storage of primary oil refining waste. Within the frames of the scientific research, the analysis of the stock materials of the enterprise was conducted; field observation was performed on the territory of the considered enterprise and the construction of ecological cartographic models was carried out, reflecting the level of the air pollution in the territory under consideration. The study also carried out a literary review and presented a list of the main existing technologies for the utilization of oil sludge to improve the quality of the air in the region under consideration.
Źródło:: Journal of Ecological Engineering; 2021, 22, 1; 60-67
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Anthropogenic changes of CO2, CH4, N2O, CFCI3, CF2Cl2, CCl2FCClF2, CHCl3, CH3CCI3, CCI4, SF6 and SF5CF3 mixing ratios in the atmosphere over southern Poland
Autorzy:: Różański, K.
Nęcki, J.
Chmura, Ł.
Śliwka, I.
Zimnoch, M.
Bielewski, J.
Gałkowski, M.
Bartyzel, J.
Rosiek, J.
Powiązania:: https://bibliotekanauki.pl/articles/2060461.pdf
Data publikacji:: 2014
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: atmosphere
monitoring
greenhouse gases
halogenated compounds
Opis:: An overview of long-term, sysiematic observations of trace gas composition of the atmosphere over southern Poland is given. Three major greenhouse gases (CO2, CH4, N2O) and selected halocarbons (freons F-11, F-12 and F-113; chloroform; 1,1,1-trichloroetane; carbon tetrachloride; sulphur hexafluoride and trifluoromethyl sulphur pentafuoride) were monitored. Measurements were performed at two locations of contrasting characteristics: (1) the high-mountain site Kasprowy Wierch, High Tatras, representing atmospheric conditions relatively free of local influences, and (2) two sites located in the Kraków agglomeration, representing a typical urban atmosphere. The data available for Kraków and Kasprowy Wierch were compared with the Mace Head data, representing a marine regional background. The impact of continental sources for some of the measured gases is clearly seen in the Kraków and Kasprowy Wierch records. The mean offset between CH4 concentrations recorded at Kasprowy Wierch and at Mace Head for the period 1998-2012 is 20.7 ppb and stems from continental emissions of this gas originating mainly from anthropogenic activities (leaks of natural gas distribution networks, landfills, livestock). For N2O, a similar offset of ca. 1 ppb for the period 2009-2012 was observed. Although the long-term concentration trends of selected halogenated compounds measured in Kraków coincide in general with the respective trends in Mace Head data, the Kraków records contain numerous spikes and periods of enhanced concentrations, reflecting the impact of local sources of these compounds. The impact of a legislative framework enforced in Poland in July 2002, regulating the trade, storage and disposal of ozone-depleting substances, is visible in the Kraków record of halogenated compounds.
Źródło:: Geological Quarterly; 2014, 58, 4; 673--684
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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