Skocz do pozycji: 1.

Tytuł:

Radon a ryzyko raka płuc

Autorzy:

Fornalski, K. W.
Dobrzyński, L.

Powiązania:

https://bibliotekanauki.pl/articles/214365.pdf

Data publikacji:

2012

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
rak płuc
hipoteza progowa

Opis:

W powszechnej świadomości radioaktywny gaz radon jest współodpowiedzialny za powstawanie chorób nowotworowych płuc. Jednak problem wpływu niewielkich stężeń radonu na ryzyko raka płuc od lat stanowi przedmiot wielu wnikliwych badań i sporów uczonych co do interpretacji otrzymywanych wyników. Z jednej strony występują zwolennicy hipotezy o liniowym bezprogowym wzroście ryzyka, a z drugiej strony zwolennicy koncepcji hormezy radiacyjnej. Czy możliwe jest znalezienie złotego środka pomiędzy tymi wzajemnie wykluczającymi się hipotezami?

Źródło:

Postępy Techniki Jądrowej; 2012, 3; 21-28
0551-6846

Pojawia się w:

Postępy Techniki Jądrowej

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:

Structure and magnetic properties of Fe-B-Si-Zr metallic glasses

Autorzy:

Babilas, R.
Radoń, A.
Gębara, P.

Powiązania:

https://bibliotekanauki.pl/articles/1054824.pdf

Data publikacji:

2017-04

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

33.45.+x
61.05.cp
64.70.pe
75.50.Kj

Opis:

Fe-based amorphous alloys were characterized by X-ray diffraction, transmission Mössbauer spectroscopy and vibrating sample magnetometry. The studies were performed on (Fe_{0.75}B_{0.15}Si_{0.1})_{100-x}Zr_{x} (x=0, 1, 3) metallic glasses in the form of ribbons. The glassy samples were prepared by the "melt spinning" technique in argon protective atmosphere. The XRD patterns show the broad diffraction halo that is typical for amorphous Fe-based alloys. The Mössbauer spectroscopy allows to study the local environments of the Fe atoms in the glassy state, showing the changes in the amorphous structure due to the changing of Zr addition. From hysteresis loops obtained from vibrating sample magnetometry measurements, coercive force and saturation magnetization were determined versus different Zr content. The obtained magnetic properties allow to classify the studied amorphous alloys in as-cast state as soft magnetic materials.

Źródło:

Acta Physica Polonica A; 2017, 131, 4; 726-728
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:

Wpływ boru i krzemu na własności magnetycznestopów na bazie żelaza
Influence of boron and silicon on the magnetic properties of iron- based alloys

Autorzy:

Radoń, A.
Łoński, W.
Babilas, R.

Powiązania:

https://bibliotekanauki.pl/articles/101840.pdf

Data publikacji:

2015

Wydawca:

Politechnika Lubelska. Polskie Towarzystwo Promocji Wiedzy

Tematy:

szkło metaliczne
stopy amorficzne na osnowie Fe
własności magnetyczne
pole Weissa
metallic glass
amorphous alloys Fe-based
magnetic properties
Weiss field

Opis:

W pracy przedstawiono wyniki badań struktury i wybranych własności magnetycznych szkieł metalicznych na osnowie żelaza. Próbki do badań w postaci taśm wytworzono metodą “melt spinning”. W ramach badań własności magnetycznych wyznaczono indukcję nasycenia oraz natężenie pola koercji i wartość namagnesowania. Zakładając, że namagnesowanie można podobnie zdefiniować jak w przypadku paramagnetyków (klasyczna teoria ferromagnetyzmu wykorzystująca model pola molekularnego – pola Weissa) opracowano metodykę opisu własności magnetycznych dla badanych stopów amorficznych. Ilościowy wpływ pierwiastków stopowych (B,Si) na własności magnetyczne badanych materiałów pozwolił określić wartość współczynnika mocy wpływu β, której wielkość zastępuje stałą pola molekularnego.
The paper presents the results of structural and magnetic properties of selected iron- basedmetallic glasses. The samples in the form of tapes were prepared by "melt spinning".The study of the magnetic properties were determined saturation induction,magnetic coercivity and value of the magnetization. Taking advantage of the fact that the magnetization is defined similarly as in the case of paramagnetics (a classic theory of ferromagnetism that uses molecular field model –Weiss field) description model of the magnetic properties of amorphous material. Quantitative impact of alloying elements (B, Si) on the magnetic properties of the material allowed to determine the effect of power factor β , which replaces the fixed constant of molecular field.

Źródło:

Journal of Technology and Exploitation in Mechanical Engineering; 2015, 1, 1-2; 80-95
2451-148X

Pojawia się w:

Journal of Technology and Exploitation in Mechanical Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Two significant experiences related to radon in a high risk area in Spain

Autorzy:

Sainz, C.
Gutierrez-Villanueva, J. -L.
Fuente, I.
Quindos, L.
Soto, J.
Arteche, J. -L.
Quindos Poncela, L. S.

Powiązania:

https://bibliotekanauki.pl/articles/148910.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
workplace
mitigation
pilot house

Opis:

Radon is a natural radioactive gas and it is currently accepted as being responsible for lung cancer in some cases. One of the most important sources of indoor radon is from the soil. The radium content of soil is also a very important factor to be taken into account. The natural radiation map of Spain (MARNA) classifies the country into three regions with different levels of natural gamma radiation. There are some areas in Spain with high levels of natural radiation one of those is the province of Salamanca. Western part of this province presents a population of 20 000 inhabitants and 7% of the houses have an indoor radon concentration above 400 Bqźm–3. In this high risk area, the village of Villar de la Yegua is of special interest: 11% of the houses in this village have an indoor radon level below 400 Bqźm–3, 89 per cent have above 400 Bqźm–3 and 71 per cent of the houses have a radon concentration above 1000 Bqźm–3. An old uranium mine site close to this village has been selected for the construction of an experimental pilot house. It is a two story house located in the place with a very high 226Ra concentration in soil. Radon in soil at 1 m depth has an average level of 250 kBqźm–3. We present in this work the characteristics of the experimental unit located in this high risk area and we describe the zone where one of the Spanish villages with the highest radon concentration is located. This is a very interesting place for further research on indoor radon concentration and it is a unique opportunity of testing radon monitors, radon passive detectors and remedial actions for the mitigation of radon in real conditions. It is common to carry out intercomparison exercises under laboratory conditions. Nonetheless, it is not so common to develop these exercises in real conditions as we have in the experimental unit we present here. We offer in this work the possibility for other research groups of testing their equipments in this unit and we also show the evolution of the works carried out in the locality of Villar de la Yegua.

Źródło:

Nukleonika; 2010, 55, 4; 513-518
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:

Radon measurement as a monitoring possibility for mining subsidence occurrences
Możliwość wykorzystania pomiarów dla wykrywania przypadków osiadania terenów górniczych

Autorzy:

Kies, A.
Storoni, A.
Tosheva, Z.

Powiązania:

https://bibliotekanauki.pl/articles/340794.pdf

Data publikacji:

2004

Wydawca:

Główny Instytut Górnictwa

Tematy:

stężenie radonu
nradon na terenach górniczych
radon concentration
radon in mining areas

Źródło:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa; 2004, 1; 115-117
1643-7608

Pojawia się w:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:

Effect of electronic cigarette (EC) aerosols on particle size distribution in indoor air and in a radon chamber

Autorzy:

Khalaf, Hyam Nazmy
Mostafa, Mostafa Y. A.
Zhukovsky, Michael

Powiązania:

https://bibliotekanauki.pl/articles/146856.pdf

Data publikacji:

2019

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

size distribution
ultrafine particles
UFPs
electronic cigarette
EC
radioactive aerosols
rozkład wielkości
ultradrobne cząstki
e-papieros
aerozole radioaktywny

Opis:

Particle size distribution is an important factor governing whether aerosols can be deposited in various respiratory tract regions in humans. Recently, electronic cigarette (EC), as the alternative of tobacco cigarette, has become increasingly popular all over the world. However, emissions from ECs may contribute to both indoor and outdoor air pollution; moreover, comments about their safety remain controversial, and the number of users is increasing rapidly. In this investigation, aerosols were generated from ECs and studied in the indoor air and in a chamber under controlled conditions of radon concentration. The generated aerosols were characterized in terms of particle number concentrations, size, and activity distributions by using aerosol diffusion spectrometer (ADS), diffusion battery, and cascade impactor. The range of ADS assessment was from 10–3 µm to 10 µm. The number concentration of the injected aerosol particles was between 40 000 and 100 000 particles/cm3. The distribution of these particles was the most within the ultrafi ne particle size range (0–0.2 µm), and the other particle were in the size range from 0.3 µm to 1 µm. The surface area distribution and the mass size distribution are presented and compared with bimodal distribution. In the radon chamber, all distributions were clearly bimodal, as the free radon decay product was approximately 1 nm in diameter, with a fraction of 0.7 for a clean chamber (without any additional source of aerosols). The attached fraction with the aerosol particles from the ECs had a size not exceeding 1.0 µm.

Źródło:

Nukleonika; 2019, 64, 1; 31-38
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:

A radon anomaly in soil gas at Cazzaso,NE Italy, as a precursor of an ML = 5.1 earthquake

Autorzy:

Vaupotič, J.
Riggio, A.
Santulin, M.
Zmazek, B.
Kobal, I.

Powiązania:

https://bibliotekanauki.pl/articles/148908.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
soil gas
Barasol probes
anomalies
earthquakes

Opis:

At Cazzaso (Friuli) in northeast Italy, radon (222Rn) activity concentration in soil gas in a borehole at a depth of 80 cm has been monitored continuously (at a frequency of once an hour) since May 2004, using a Barasol probe (Algade, France). In addition, environmental parameters (air and soil temperature, barometric pressure) have been recorded. The results have been evaluated and the relationship between radon levels and seismic activity is discussed. Correlation between radon concentration and barometric pressure has been observed. Preliminary results have shown a distinct radon anomaly prior to some earthquakes.

Źródło:

Nukleonika; 2010, 55, 4; 507-511
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:

The presence and dosimetry of radon and thoron in a historical, underground metalliferous mine

Autorzy:

Kleinschmidt, R.
Watson, D.
Janik, M.
Gillmore, G.

Powiązania:

https://bibliotekanauki.pl/articles/92202.pdf

Data publikacji:

2018

Wydawca:

Główny Instytut Górnictwa

Tematy:

radon
thoron
progeny
mines
dose
NORM
toron
potomstwo
kopalnie
dawka

Opis:

A combination of long term passive, and short term active radon-222, radon-220 and respective progeny measurements were conducted in both traverse and longitudinal axes of a historical metalliferous underground mine in North Queensland, Australia. While the passive monitor results provided average radon and thoron air concentrations over periods of 70-90 days, active measurements over a four day period provided significantly more detail into the dynamics of radon and progeny concentrations in the naturally ventilated mine environment. Passive monitor concentrations for radon and thoron ranged between 60 and 390 Bq m^-3 (mean: 140 ±55 Bq m^-3) and 140 and 2600 Bq m^-3 (mean: 1070 ±510 Bq m^-3) respectively, with passive thoron progeny monitors providing a mean concentration of 9 ±5 Bq m^-3EEC. Active measurement mean concentrations for radon, thoron, radon progeny and thoron progeny in the centre of the mine drive were 130 ±90 Bq m^-3, 300 ±100 Bq m^-3, 20 ±20 Bq m^-3EEC and 10 ±10 Bq m^-3EEC respectively. It was identified that thoron passive detector placement is critical in establishing reliable monitoring data, and is the reason for the discrepancy between the active and passive thoron results in this study. Site specific progeny measurements are required for the accurate estimation of dose to persons entering the mine. Based on short term active measurements and passive thoron progeny monitor results, the dose contribution from thoron and progeny in the mine was observed to contribute up to 80% of the total radon/thoron inhalation dose, and therefore should not be underestimated in monitoring programs under similar conditions.

Źródło:

Journal of Sustainable Mining; 2018, 17, 3; 120-130
2300-1364
2300-3960

Pojawia się w:

Journal of Sustainable Mining

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:

Factors underlying persistently high radon levels in a house located in a karst limestone region of Ireland : lessons learned about remediation

Autorzy:

Long, S. C.
Fenton, D.
Scivyer, C.
Monahan, E.

Powiązania:

https://bibliotekanauki.pl/articles/147388.pdf

Data publikacji:

2016

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

karst geology
lessons learned
radon
remediation methods

Opis:

The remediation of buildings with elevated radon concentrations is generally straightforward. However, in some cases a number of attempts may be needed to reduce concentrations to below the reference level and, occasionally, it may be impossible to reduce concentrations to below the reference level in a cost effective way. This paper details the work carried out between 2004 and 2012 to reduce radon concentrations in a house with initial radon concentrations of almost 1500 Bq/m3. Over this period, high radon levels were consistently recorded despite the introduction of various radon remedial measures. Remedial work was carried out on ten occasions with 29 radon tests carried out to measure the effect of this work. The paper describes the structure of the house and the karst geology that it is built on and the likely contribution of these factors to the difficulties encountered reducing concentrations. Ultimately, radon concentrations were reduced to about 450 Bq/m3 but no further reductions were considered practicable without substantial and costly renovation to the house. Nonetheless, the remedial work carried out to date has resulted in a significant reduction in the risk to the homeowner of developing lung cancer. This work has also added to the understanding of radon remediation techniques in Ireland, particularly for houses built on karst limestone.

Źródło:

Nukleonika; 2016, 61, 3; 327-332
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:

A note on Radon-Nikodym derivatives and similarity for completely bounded maps

Autorzy:

Gheondea, A.
Kavruk, A. S.

Powiązania:

https://bibliotekanauki.pl/articles/255174.pdf

Data publikacji:

2009

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Radon-Nikodym derivative
C*-algebra
completely positive map
similarity

Opis:

We point out a relation between the Arveson's Radon-Nikodym derivative and known similarity results for completely bounded maps. We also consider Jordan type decompositions coming out from Wittstock's Decomposition Theorem and illustrate, by an example, the nonuniqueness of these decompositions.

Źródło:

Opuscula Mathematica; 2009, 29, 2; 139-145
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:

Atmospheric radon concentration around a phosphogypsum stack at Wislinka (Northern Poland)
Stężenie radonu w atmosferze w okolicy hałdy fosofgipsów w Wiślince (Pólnocna Polska)

Autorzy:

Tchorz-Trzeciakiewicz, D.E.
Solecki, A.T.

Powiązania:

https://bibliotekanauki.pl/articles/15015.pdf

Data publikacji:

2012

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza

Opis:

The measurements of atmospheric radon concentration were carried out for one year at the turn of 2008/2009, using Kodak LR 115 passive track detectors. The average atmospheric radon activity near the phosphogypsum stack was 104 Bq m–3. This is below the level accepted for indoor air. The results indicate that there are strong positive correlations between radon concentration and temperature (r=0.9) or atmospheric pressure (r=0.9) and a negative correlation between radon concentration and humidity (r=-0.7) or wind velocity (r=-0.7). Moreover, for all monitoring points the correlation between radon atmospheric concentrations measured in four seasons of the year were analyzed. The correlation coefficients are as follows: winter-summer 0.7, winter-autumn 0.2, winter-spring 0.2. Influence of radon exhalation from the stack was especially distinct in winter when the background radon activity was low. Spring and autumn farmland cultivation works increase radon exhalation from the soil, so that the contribution of radon emitted from the stack was less obvious.
Pomiary stężenia radonu w atmosferze przeprowadzono w ciągu jednego roku, na przełomie lat 2008/2009, z użyciem detektorów Kodak LR-115. średnie stężenie radonu w atmosferze wynosiło 104 Bq m–3, co jest wartością poniżej dopuszczalnego stężenia tego gazu w budynkach mieszkalnych. Wykazano silne dodatnie korelacje między stężeniem radonu i temperaturą (r=0.9), i ciśnieniem atmosferycznym (r=0.9) oraz ujemne korelacje między stężeniem radonu a wilgotnością powietrza (r=-0.7) oraz prędkością wiatru (r=-0.7). Ponadto obliczono korelację między stężeniami radonu zarejestrowanymi w wyznaczonych punktach pomiarowych w poszczególnych sezonach. Współczynniki korelacji w sezonach: zima – lato, zima – jesień, zima – wiosna wynoszą odpowiednio: 0,7; 0,2; 0,2. Wpływ ekshalacji radonu z hałdy na stężenie radonu w atmosferze jest szczególnie widoczny w sezonie zimowym, w którym poza obszarami sąsiadującymi z hałdą rejestruje się najniższe w roku stężenie tego gazu. Wiosną i jesienią prace rolnicze wpływają na wzrost ekshalacji radonu z gruntu, przez co udział radonu, który wydostał się z hałdy, staje się mniej wyrazisty.

Źródło:

Journal of Elementology; 2012, 17, 2
1644-2296

Pojawia się w:

Journal of Elementology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:

Wyniki rocznego monitoringu stężenia radonu w powietrzu budynku mieszkalnego w Łodzi na tle warunków meteorologicznych
Results of 1-year monitoring of air radon concentration in a detached house in Łódź with reference to meteorological conditions

Autorzy:

Podstawczyńska, Agnieszka

Powiązania:

https://bibliotekanauki.pl/articles/578302.pdf

Data publikacji:

2016

Wydawca:

Łódzkie Towarzystwo Naukowe

Tematy:

bioklimat domu
jakość powietrza
radon
temperatura powietrza
opady
ciśnienie atmosferyczne
Łódź
bioclimate of house
air quality
air temperature
precipitation
air pressure

Opis:

W pracy dokonano analizy zmienności stężenia aktywności radonu (Rn-222) w powietrzu, rejestrowanego w trybie ciągłym, w domu jednorodzinnym w Łodzi, w okresie 356 dni, w latach 2014–2015. Tło meteorologiczne pomiarów Rn-222 stanowiły wartości temperatury powietrza w budynku i w warunkach zewnętrznych, sum godzinnych opadu atmosferycznego, ciśnienia atmosferycznego oraz typy cyrkulacji. Stwierdzono zmienność sezonową oraz dobową poziomu stężenia badanego radionuklidu w powietrzu uwarunkowaną sposobem użytkowania domu oraz czynnikami meteorologicznymi. Zamknięcie (nieużytkowanie) domu w lipcu 2014 roku spowodowało 5-krotny wzrost stężenia aktywności Rn-222 w stosunku do wartości średniej. Spadek temperatury powietrza w otoczeniu budynku wykazał słabą korel ację dodatnią, ze wzrostem stężenia aktywności Rn-222 w domu. Zmniejszenie poziomu stężenia aktywności Rn-222 w budynku obserwowano po intensywnych opadach. Ciśnienie atmosferyczne i typ cyrkulacji nie wykazywały wpływu na poziom rejestrowanego stężenia aktywności Rn-222.
The aim of the study was to investigate the variability of air Rn-222 concentration in a single-family detached house in Łódź with reference to indoor-outdoor air temperature differences, precipitation, air pressure and type of atmospheric circulation. Experiments comprising continuous, simultaneously measurements of meteorological elements and air Rn-222 concentration using AlphaGUARD® PQ2000 PRO (ionization chamber, diffusion mode) in the period from 20 May 2014 to 10 May 2015. A slightly positive correlation between Rn-222 levels and indoor-outdoor air temperature has been shown but the relationship with air pressure was not confirmed. The analysis indicated that rainfall can be an important meteorological controlling factor of air Rn-222 levels in houses located in an area with shallow groundwater.

Źródło:

Acta Geographica Lodziensia; 2016, 104; 137-146
0065-1249

Pojawia się w:

Acta Geographica Lodziensia

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:

Attempts on radon exhalation rate determination from a waste-dump at the Bogdanka coal mine using the Picorad detectors
Próby oznaczania szybkości ekshalacji radonu ze składowiska odpadów kopalni węgla kamiennego "Bogdanka" przy użyciu detektorów Picorad

Autorzy:

Komosa, A.
Chibowski, S.
Chałupnik, S.

Powiązania:

https://bibliotekanauki.pl/articles/340369.pdf

Data publikacji:

2004

Wydawca:

Główny Instytut Górnictwa

Tematy:

kopalnia Bogdanka
ekshalacja radonu
Detektor Picoard
Pojezierze Łęczyńsko-Włodawskie
Bogdanka coal mine
radon exhalation
Picorad detector
Łęczna-Włodawa lake District

Źródło:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa; 2004, 1; 79-80
1643-7608

Pojawia się w:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

A two cones support theorem

Autorzy:

Estrada, R.

Powiązania:

https://bibliotekanauki.pl/articles/255211.pdf

Data publikacji:

2016

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

Radon transforms
support theorems
distributions

Opis:

We show that if the Radon transform of a distribution ƒ vanishes outside of an acute cone Co, the support of the distribution is contained in the union of Co and another acute cone C1, the cones are in a suitable position, and ƒ vanishes distributionally in the direction of the axis of C1, then actually supp ƒ C ⊂ Co. We show by examples that this result is sharp.

Źródło:

Opuscula Mathematica; 2016, 36, 2; 207-213
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:

Using a scale model room to assess the contribution of building material of volcanic origin to indoor radon

Autorzy:

Lucchetti, Carlo
Castelluccio, Mauro
Altamore, Matteo
Briganti, Alessandra
Galli, Gianfranco
Soligo, Michele
Tuccimei, Paola
Voltaggio, Mario

Powiązania:

https://bibliotekanauki.pl/articles/146125.pdf

Data publikacji:

2020

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

building materials
indoor radon
indoor thoron
model room
natural radiation
radon
thoron exhalation rates

Opis:

In the frame of Radon rEal time monitoring System and Proactive Indoor Remediation (RESPIRE), a LIFE 2016 project funded by the European Commission, the contribution of building materials of volcanic origin to indoor radon concentration was investigated. First, total gamma radiation and related outdoor dose rates of geological materials in the Caprarola area (Central Italy) were measured to define main sources of radiation. Second, 222Rn and 220Rn exhalation rates of these rocks used as building materials were measured using an accumulation chamber connected in a closed loop with a RAD7 radon monitor. Among others, the very porous “Tufo di Gallese” ignimbrite provided the highest values. This material was then used to construct a scale model room of 62 cm × 50 cm × 35 cm (inner length × width × height, respectively) to assess experimental radon and thoron activity concentration at equilibrium and study the effects of climatic conditions and different coatings on radon levels. A first test was carried out at ambient temperature to determine experimental 222Rn and 220Rn equilibrium activities in the model room, not covered with plaster or other coating materials. Experimental 222Rn equilibrium was recorded in just two days demonstrating that the room “breaths”, exchanging air with the outdoor environment. This determines a dilution of indoor radon concentration. Other experiments showed that inner covers (such as plasterboard and different kinds of paints) partially influence 222Rn but entirely cut the short-lived 220Rn. Finally, decreases in ambient temperature reduce radon exhalation from building material and, in turn, indoor activity concentration.

Źródło:

Nukleonika; 2020, 65, 2; 71-76
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 16.

Tytuł:

Evaluation of radon risk for Białystok inhabitants regarding the type of town buildings

Autorzy:

Karpińska, M.
Kapała, J.
Szpak, A.
Mnich, Z.

Powiązania:

https://bibliotekanauki.pl/articles/148400.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

indoor radon
Białystok
mean annual concentration of radon
type of buildings

Opis:

Radon and its short-lived disintegration products are the most significant factors of exposure to ionizing radiation from natural sources. Białystok has the population of about 300,000 inhabitants in 100,460 flats in 16,282 houses. They are mostly one-family houses (about 80.7per cent) and two-family houses (8.2 per cent). It can be estimated that about 2/3 of the Białystok inhabitants live in the so-called “blocks of flats”. The study aimed at evaluation of the exposure to radon present in the flats. The integral method of trace detectors was used to measure radon concentration indoors. All values of the radon concentration were the mean annual values as they were obtained on annual exposure or were calculated and corrected to annual exposure based on shorter periods of time. Radon concentration distribution in flats of 3 housing estates in Białystok was analyzed. The effective dose of inhaled radon per a statistical inhabitant of Białystok (about 1.1 mSv) per year was calculated on the basis of mean values of radon concentration. Inhabitants of one-family houses obtained slightly higher annual doses – 1.4 mSv while the inhabitants of block of flats got lower annual doses – 0.8 mSv.

Źródło:

Nukleonika; 2010, 55, 2; 213-217
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 17.

Tytuł:

Zastosowanie folii PTFE w konstrukcji sensora promieniowania alfa
Applications of PTFE foil as a sensor alpha-radiation

Autorzy:

Gubański, A.
Kupracz, J.

Powiązania:

https://bibliotekanauki.pl/articles/159999.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Elektrotechniki

Tematy:

elektret
dozymetr elektretowy
radon
electrets
PTFE foil
sensor

Opis:

Zastosowanie elektretu w rozwiązaniu dozymetru wykorzystuje efekt kompensacji dodatniego ładunku zgromadzonego w sensorze (elektrecie) w wyniku oddziaływania promieniowania z materią. Jony ujemne, powstałe w wyniku działania promieniowania jonizującego wewnątrz komory jonizacyjnej, kompensują dodatni ładunek elektretu. Pomiar ładunku próbki elektretowej, zastosowanej jako sensor, przed ekspozycją, oraz bezpośrednio po, pozwalają ocenić stężenie czynnika wywołującego zagrożenie w badanym środowisku.
This article presents PTFE electret elements for detection and measurement of α-emission. Negative ions produced inside the chamber are collected on the positively charged electret, causing a reduction of its surface charge. The measurement of the depleted charge during the exposure period is a measure of integrated ionization during the measurement period. The electret charge is read before and after the exposure using a specially built non-contact electret voltage. Radon is a colourless, odourless and chemically inert radioactive gas, occurring as a radioactive decay product of the element uranium,238U in a wide range of rocks and soils, and in building materials incorporating or manufactured from these. Radon concentrates in the built environment, the most significant isotope, 222Rn, decaying by α-emission (half-life 3.8 days) to 218Po and thence (3.05 min) to 214Po, themselves both α-emitters. Radon is now recognised to be the second largest cause of lung cancer in the after smoking. Electret elements for dosimetr made of PTFE foil, and were formed on the corona triode.

Źródło:

Prace Instytutu Elektrotechniki; 2013, 262; 47-56
0032-6216

Pojawia się w:

Prace Instytutu Elektrotechniki

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:

A laboratory facility (RTD) to study radon transport through modeled soil bed: results of preliminary measurements

Autorzy:

Kozak, K.
Mazur, J.
Hovhannisyan, H.

Powiązania:

https://bibliotekanauki.pl/articles/148126.pdf

Data publikacji:

2009

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
transport
facility
diffusion

Opis:

The paper describes a laboratory facility (radon transport device – RTD) which makes it possible to study radon transport. The measuring position is a vertical cylindrical vessel with a height of 202 cm and a diameter of 24 cm. It can be filled with sand, gravel or other soil materials to be studied. The facility is providing radon gas from the source to the studied material and making it possible to measure radon concentration at different vertical distances from the source. The parameters of the medium (temperature, humidity) can be measured at the same time. The preliminary measurements using the RTD with sand as medium are presented.

Źródło:

Nukleonika; 2009, 54, 3; 193-198
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 19.

Tytuł:

Radon in potable waters in Luxembourg

Autorzy:

Tosheva, Z.
Kies, A.
Hofmann, H.

Powiązania:

https://bibliotekanauki.pl/articles/148840.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon concentration
geological dependence
seasonal radon variation
waters in Luxembourg

Opis:

The presence of elevated concentrations of radon in water is a potential health risk when the water is used in public water supply, mainly because of the increase of radon concentration in the indoor air due to degassing [16]. Samples were taken from a large number of Luxembourg’s drinking water springs in 2007 to determine the major ion chemistry and potential contaminants, mainly from agriculture. The natural radioactive isotopes were analysed as part of this program. Two sampling campaigns were performed, one in summer, one in winter, to consider seasonal variations. This paper presents the radon activities, which were sampled during the two field campaigns and measured using liquid scintillation counting (LSC). For quality assurance of our results we made three replicates from each collected water sample. This methodology was used because it is more accurate than other possible methods of radon measurement, and its limit of detection is sufficiently low, i.e., 700 Bqźm–3. The correlation between radon and radium levels was estimated, as well as the dependence of radon levels on geology. The results from the year 2007 were compared to previous measurements from the year 2003. Five springs in the program were sampled monthly throughout a year to account for possible seasonal variations, additionally to the large spatial extend of the program.

Źródło:

Nukleonika; 2010, 55, 4; 583-588
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 20.

Tytuł:

Measurement of radon (222Rn) and thoron (220Rn) concentration with a single scintillation cell

Autorzy:

Machaj, B.
Urbański, P.
Bartak, J.

Powiązania:

https://bibliotekanauki.pl/articles/146829.pdf

Data publikacji:

2007

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
thoron
measurement
scintillation cell

Opis:

. A single scintillation cell (ö 54 × 74 mm) is used for the measurement of radon and thoron. The radon and thoron laden air is filtered and forced to flow at 1 dm3/min through the scintillation cell in the period of 1 10 min. The count number from alpha radiation is registered in the periods of 3 10 min and 20 30 min. Two values of detection and deposition efficiency of alpha radiation are used for radon (at air flow and air at rest in the cell) and for thoron. Measurements of radon laden air and thoron laden air showed good agreement between the reference concentration and the measured concentration, not worse than 1% for radon and not worse than 2% for thoron. Combination of radon + thoron concentration showed also a small interference ("cross talk") not worse than 1%.

Źródło:

Nukleonika; 2007, 52, 4; 167-171
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 21.

Tytuł:

Soil types and their relations with radon concentration levels in Middle Governorate of Gaza Strip, Palestine

Autorzy:

Ubeid, K.F.
Ramadan, K.A.

Powiązania:

https://bibliotekanauki.pl/articles/971260.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej

Tematy:

grain-size distribution
radon
pollution
gaza strip
palestine

Opis:

Determination of natural radioactivity has been carried out in surface and core agricul- tural soil samples collected from various sites in the Middle Governorate – Gaza Strip, Palestine. Mechanical and chemical analysis has been done to determine soil characteristics. Radon activity concentration measurements were carried out using solid state nuclear tracks detectors, Cr-39. The mechanical analysis results show that they belong to two classes, sandy loam and loamy sand. The sandy loam soil was observed in the eastern side of the study area, whereas the loamy sand was observed in western and middle parts. The radon concentration levels were higher in core samples and were proportionate to the soil depth. Also they were higher in sandy loam than loamy sand soil samples. The radon concentration levels had a positive correlation with fine grains (clay- to silt-size) of soil sample which translocated from upper to lower horizons of soil during its development. Additionally, there was a positive correlation with pH and water content, whereas a negative correlation was observed with organic matter and potassium contents. The positive cor- relation referred to a large specific surface of fine grains which were located in lower horizons of soil and were able to adsorb more water and consequently led to high radon concentration levels.

Źródło:

Polish Journal of Soil Science; 2020, 53, 1
0079-2985

Pojawia się w:

Polish Journal of Soil Science

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 22.

Tytuł:

Potencjalnie lecznicze wody radonowe wschodniej części Wysokiego Grzbietu Gór Izerskich (Sudety) o największej zawartości radonu w Polsce
Potentially medicinal radon waters of the eastern part of the High Ridge in the Izera Range (Sudetes), containing the greatest radon concentration in Poland

Autorzy:

Prusak, Jakub
Przylibski, Tadeusz A.

Powiązania:

https://bibliotekanauki.pl/articles/20222176.pdf

Data publikacji:

2023

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

222 Rn
radon
wody gruntowe
woda radonowa
woda lecznicza
Sudety
Szklarska Poręba
groundwater
radon water
medicinal water
Sudetes

Opis:

In the years 2020-2022, the authors conducted research on the activity concentration of 222 Rn in the groundwater of the eastern part of the Izera metamorphic unit. As a result, they found potentially medicinal radon waters in hornfelses of the eastern part of the Szklarska Poręba band. The value measured in one of the water samples appeared to be the highest activity concentration of 222Rn in groundwater of Poland so far - 3368 ±61 Bq/dm3. The authors also found that outflows of potentially medicinal radon waters account for almost 85.5% (47 out of 55) of all groundwater outflows in the study area. Thanks to the large amount of data obtained, the authors calculated a new value of the hydrogeochemical back-ground of 222 Rn in the groundwater of the Izera metamorphic unit. The background is currently 17-890 Bq/dm3. In Poland, higher values have only been reported of the Lądek-Śnieżnik metamorphic unit. The research results also open the way to the possible creation of a modern radon spa in Szklarska Poręba. It could operate in Biała Dolina on the basis of both previously found resources of radon waters of the Karkonosze granite and the radon waters forming within the eastern part of the Izera metamorphic unit.

Źródło:

Przegląd Geologiczny; 2023, 71, 2; 58-70
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 23.

Tytuł:

Investigation of the influence of chamber construction parameters on radon exhalation rate

Autorzy:

Kozłowska, B.
Mazur, J.
Kozak, K.
Walencik-Łata, A.
Baic, B.

Powiązania:

https://bibliotekanauki.pl/articles/147577.pdf

Data publikacji:

2016

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

accumulation chambers
exhalation rate
measurement techniques
radon

Opis:

Radon exhalation from ground is a process dependent on the emanation and migration of radon through ambient air. Most studies on radon exhalation from soil were performed regarding the influence of meteorological and soil parameters. As radon exhalation rate can be affected by the internal properties of the sample, it may also be influenced by the exhalation chamber geometry such as volume-to-area (V/S) ratio or other construction parameters. The measurements of radon exhalation from soil were made using different constructions of accumulation chamber and two types of radon monitors: RAD7 (Durridge) and AlphaGUARD PQ2000PRO (Genitron). The measurements were performed on one site in two locations and approximately at the same time. The first tests did not show the correlations of exhalation rate values and the chamber’s construction parameters and their geometrical dimensions. However, when examining the results, it seems that there are still too many factors that might have affected the process of radon exhalation. The future experiments are planned to be conducted in controlled laboratory conditions.

Źródło:

Nukleonika; 2016, 61, 3; 269-273
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 24.

Tytuł:

Intercomparison of radon CR-39 detector systems conducted in CLORs calibration chamber

Autorzy:

Mamont-Cieśla, K.
Stawarz, O.
Karpińska, M.
Kapała, J.
Kozak, K.
Grządziel, D.
Chałupnik, S.
Chmielewska, I.
Olszewski, J.
Przylibski, T. A.
Żebrowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/148842.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon-222
CR-39 track detector
intercomparison
RadoSys

Opis:

Six radon laboratories, which perform indoor radon measurements to jointly investigate temporal variations of radon concentration in houses in a couple of regions in Poland, participated in the intercomparison exercise. There are involved three commercially available Hungarian RadoSys systems and four own laboratory methods. All of them are based on the etched-track CR-39 detectors. The intercomparison was conducted in a calibration laboratory of the Central Laboratory for Radiological Protection (CLOR), Warsaw, Poland, accredited by the Polish Center for Accreditation (previously AP 101, at present AP 057). Comparison measurements were performed during three expositions in the CLOR’s radon calibration chamber under controlled normal climatic conditions and steady radon concentration. The results were referred to the value of the radon concentration determined by AlphaGUARD monitor traceable to the primary 222Rn standard in Physikalisch-Technische Bundesanstalt (PTB), Braunchweig, Germany. The mean performance ratio defined as a ratio of the reference to participant’s result range from 0.88 to 1.31.

Źródło:

Nukleonika; 2010, 55, 4; 589-593
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 25.

Tytuł:

Dispersion of radon in the atmosphere around old uranium mill tailings

Autorzy:

Molchanov, O.
Soroka, Y.
Podrezov, A.
Soroka, M.
Buzinny, M.
Pavlenko, T.

Powiązania:

https://bibliotekanauki.pl/articles/148918.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
uranium tailings
track detector
equilibrium factor

Opis:

This paper presents the results of investigations of radon levels in the atmosphere around old uranium tailings aiming to estimate the influence of inactive uranium sites to the population and personnel. These tailings are situated in the area of a former uranium processing activity of a Pridniprovsk Chemical Plant in the city of Dniprodzierzhinsk. The radon-222 measurements have been carried out using an etched track system TRACK 2010Z. The minimum detectable activity of radon-222 has made up 2 Bq/m3 with the exposure of 30 days. Corresponding data sets of radon-222 and its daughters have been analysed. We have calculated distribution of the radon equilibrium factor (F), i.e. the ratio between radon and radon daughters for the investigated site. Our study shows a contrast spatial radon-222 dispersion in the atmosphere, while radon-222 is lowered to the background levels. The average value of the F makes up 0.146 for the undisturbed open atmosphere. Atmospheric inversions cause a significant rise of F that goes up to 0.487. The present research has been carried out within the frameworks of the STCU project no. 3290.

Źródło:

Nukleonika; 2010, 55, 4; 535-538
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 26.

Tytuł:

Quaternary deposits and weathered bedrock material as a source of dangerous radon emissions in Estonia

Autorzy:

Petersell, V.
Jüriado, K.
Raukas, A.
Shtokalenko, M.
Täht-Kok, K.

Powiązania:

https://bibliotekanauki.pl/articles/94608.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

radon
uranium
klint
graptolite argillite
Quaternary deposits
till
uran
argilit
osady czwartorzędowe

Opis:

The risk of dangerous radon emissions in Estonia is high, being among the highest in Europe. In almost 33 per cent of Estonian land area, the content of radon in soil-contained air exceeds the safe limit for unrestricted construction (50 kBq/m3). In such high radon-risk areas the concentration of radon in soil-contained air ranges from 50 to 400 kBq/m3, in a few cases reaching up to 2,100 kBq/m3 exceeding the permitted level for residential areas. The situation is particularly serious in the northernmost part of the country, where uranium-rich graptolite argillite (Dictyonema shale) and the Obolus phosphorite are close to ground surface and their particles are constituent parts of Quaternary deposits. Radon emissions from bedrock have been investigated in detail, but to date Quaternary strata as a source of radon emissions are poorly studied. According to our measurements the highest concentrations of radon are related to tills containing clasts and fines of graptolite argillite and phosphorite. Glacial deposits include also granitoidal material, containing U, Th and K, which have been transported by glaciers from the outcrop areas of crystalline basement rocks in Finland and the Gulf of Finland. Due to weathering, outwash and repeated redeposition other genetic types are poorer in radioactive elements and they are weaker sources of radon.

Źródło:

Geologos; 2015, 21, 2; 139-147
1426-8981
2080-6574

Pojawia się w:

Geologos

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 27.

Tytuł:

Radon 222Rn in drinking water of West Pomeranian Voivodeship and Kuyavian-Pomeranian Voivodeship, Poland

Autorzy:

Wieprzowski, K.
Bekas, M.
Waśniewska, E.
Wardziński, A.
Magiera, A.

Powiązania:

https://bibliotekanauki.pl/articles/146558.pdf

Data publikacji:

2018

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

drinking water
ionizing radiation
Kuyavian-Pomeranian Voivodeship
preliminary monitoring of radioactivity
radon-222 concentration
West Pomeranian Voivodeship
woda pitna
promieniowanie jonizujące
województwo kujawsko-pomorskie
wstępne monitorowanie radioaktywności
stężenie radonu-222
województwo zachodniopomorskie

Opis:

Radon Rn-222 is a commonly occurring natural radionuclide found in the environment from uranium- -radium radioactive series, which is the decay product of radium Ra-226. The presence of radon carries negative health effects. It is, in fact, classifi ed as a carcinogen, and therefore, it is necessary to continuously monitor its concentration. The aim of this study was to determine the level of radon-222 concentration in water intended for human consumption in the two voivodeships of Poland: West Pomeranian and Kuyavian-Pomeranian. Measurements were performed for more than 60 intakes. The level of radon was measured by using the liquid scintillation counting method. The range of measured radon concentration in the water from the West Pomeranian Voivodeship was from 0.90 to 11.41 Bq/dm3 with an average of 5.01 Bq/dm3, while that from the Kuyavian-Pomeranian Voivodeship was from 1.22 to 24.20 Bq/dm3 with an average of 4.67 Bq/dm3. Only in three water intakes, the concentration of radon-222 exceeded the value of 10 Bq/dm3. The obtained results allowed to conclude that population exposure associated with radon-222 in water is negligible and there is no need to take further action. In the case of three intakes where a higher concentration of radon was found, the potential exposure was low.

Źródło:

Nukleonika; 2018, 63, 2; 43-46
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 28.

Tytuł:

Radon – occurrence and impact on the health

Autorzy:

Dobrzyńska, M.M.
Gajowik, A.
Wieprzowski, K.

Powiązania:

https://bibliotekanauki.pl/articles/28765533.pdf

Data publikacji:

2023

Wydawca:

Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny

Opis:

Radon is noble, monatomic, radioactive, heavier than the air gas. It is colorless, odorless, tasteless. It exists in natural environment as a result of the decay of radium, and emits mainly alpha radiation and less beta radiation. Residential radon concentrations vary widely by geographic area. The higher concentration of radon is expected globally in the grounds where uranium, radium and thoron are present. Radon may gather in caves, tunnels, mines as well as in other lowestlying spaces, such as basements, and cellars. In accordance with Atomic Law (2000), the reference level for the average annual concentration of radioactive radon in rooms intended for human habitation is 300 Bq/m3. The most dangerous damages caused by ionizing radiation i.e. radon and its derivatives are changes to DNA, which may disturb the functions of cells and in the consequence lead to induction of cancer of respiratory tract, mainly of lungs and also leukaemia. So, the main consequence of exposure to high amount of radon are cancers of respiratory system. Radon enters the human organism mainly through inhaled atmospheric air. Moreover, radon significantly increased a risk of induction cancer in smokers and vice versa, smoking promotes the development of lung cancer after the exposure to radon and its derivatives. Radon may also have beneficial effect on the human body. Therefore it is used in medicine; mainly in radonbalneotherapy i.e. bath treatments, rinsing the mouth and inhalation. Beneficial effects of radon confirms the validity of the theory of radiation hormesis, which assumes that low doses of radiation may stimulate the repair of DNA damage by activation of protective mechanisms, which neutralize free radicals.

Źródło:

Roczniki Państwowego Zakładu Higieny; 2023, 74, 1; 5-14
0035-7715

Pojawia się w:

Roczniki Państwowego Zakładu Higieny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 29.

Tytuł:

Radon intercomparison tests : Katowice, 2016

Autorzy:

Chałupnik, Stanisław
Skubacz, Krystian
Wysocka, Małgorzata
Mazur, Jadwiga
Bonczyk, Michał
Kozak, Krzysztof
Grządziel, Dominika
Urban, Paweł
Tchorz-Trzeciakiewicz, D.
Kozłowska, Beata
Walencik-Łata, Agata
Podstawczyńska, Agnieszka
Olszewski, Jerzy
Bartak, Jakub
Karpińska, Maria
Wołoszczuk, Katarzyna
Dohojda, Marek
Nowak, Jakub
Długosz-Lisiecka, Magdalena
Foerster, Elisabeth
Przylibski, Tadeusz A.

Powiązania:

https://bibliotekanauki.pl/articles/146183.pdf

Data publikacji:

2020

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

active monitors
passive monitors
Polish Radon Centre
proficiency test
radon

Opis:

At the beginning of the year 2016, the representatives of the Polish Radon Centre decided to organize proficiency tests (PTs) for measurements of radon gas and radon decay products in the air, involving radon monitors and laboratory passive techniques. The Silesian Centre for Environmental Radioactivity of the Central Mining Institute (GIG), Katowice, became responsible for the organization of the PT exercises. The main reason to choose that location was the radon chamber in GIG with a volume of 17 m3 , the biggest one in Poland. Accordingly, 13 participants from Poland plus one participant from Germany expressed their interest. The participants were invited to inform the organizers about what types of monitors and methods they would like to check during the tests. On this basis, the GIG team prepared the proposal for the schedule of exercises, such as the required level(s) of radon concentrations, the number and periods of tests, proposed potential alpha energy concentration (PAEC) levels and also the overall period of PT. The PT activity was performed between 6th and 17th June 2016. After assessment of the results, the agreement between radon monitors and other measurement methods was confirmed. In the case of PAEC monitors and methods of measurements, the results of PT exercises were consistent and confirmed the accuracy of the calibration procedures used by the participants. The results of the PAEC PTs will be published elsewhere; in this paper, only the results of radon intercomparison are described.

Źródło:

Nukleonika; 2020, 65, 2; 127-132
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

A technology of drinking water decontamination from radon and its decay products

Autorzy:

Voinov, Igor
Remez, Viktor P.
Ioshin, Alexey A.
Semenishchev, Vladimir S.
Gorchakov, Dmitry A.

Powiązania:

https://bibliotekanauki.pl/articles/148301.pdf

Data publikacji:

2020

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon in drinking water
radon measurement
sorption

Opis:

Underground water is one of the main sources of radon for households. This article focuses on the estimation and removal of radon from underground water using the technology and inorganic sorbents developed by EKSORB Ltd., Russia for liquid radioactive waste treatment in the nuclear power industry. The article presents the results of tests of a system for the removal of radon and radon daughters from water patented by EKSORB. This is achieved by filtering water through RATZIR sorbent, followed by periodic load regeneration. Over a period of three years, the plant is successful in removing radon from the water that had an initial radon content of approximately 1500 Bq/L to less than 60 Bq/L, without releasing radon to indoor/outdoor air.

Źródło:

Nukleonika; 2020, 65, 2; 67-70
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Radon - jak go unikać?

Autorzy:

Derugo, A.

Powiązania:

https://bibliotekanauki.pl/articles/274311.pdf

Data publikacji:

2010

Wydawca:

Roble

Tematy:

radon
promieniowanie jonizujące
pomiar promieniowania
ionizing radiation
radiation measurement

Źródło:

LAB Laboratoria, Aparatura, Badania; 2010, 15, 4; 16-19
1427-5619

Pojawia się w:

LAB Laboratoria, Aparatura, Badania

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Potencjalnie lecznicze wody radonowe Masywu Ślęży
Potentially therapeutic radon waters of Ślęża Massif

Autorzy:

Przylibski, T. A.
Fijałkowska, L.
Bielecka, A.

Powiązania:

https://bibliotekanauki.pl/articles/2074598.pdf

Data publikacji:

2008

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

radon
222Rn
wody podziemne
wody radonowe
groundwater
radon water
medicinal water
potential therapeutic water

Opis:

The authors have conducted research on radon occurrence in the groundwater system of Ślęża Massif in the Fore-Sudetic block. The research included documenting occurrence of radon waters in the granitoids of Strzegom-Sobótka Massif, buildingNWandWslopes of Ślęża. Among several springs flowing out from the granitoids and their waste, the Klasztorne Spring is characterized by constant radon (222Rn) concentration (306 ±39 Bq/dm3), but also constant though small discharge during the year, which enables estimating the admissible volume of this spring at 0.3 m3/h. The results obtained during the research show that this water can be treated as potentially medicinal. It generates the opportunity for the nearby town of Sobótka to develop as a health resort. Confirming the presence of radon groundwater in the granitoid part of Ślęża Massif implies a great probability that such w occur in the whole area of the Strzegom-Sobótka intrusion. It opens possibilities of recognizing new resources of potential therapeutic water and entails the necessity to take suitable actions for radiological protection of people living in this area.

Źródło:

Przegląd Geologiczny; 2008, 56, 8/2; 763-771
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Uranium, radium and radon isotopes in selected brines of Poland

Autorzy:

Kozłowska, B.
Walencik, A.
Przylibski, T. A.
Dorda, J.
Zipper, W.

Powiązania:

https://bibliotekanauki.pl/articles/148912.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

uranium
radium
radon
brines

Opis:

Natural radioactive isotopes were studied in nine different types of brines from four locations in Poland. Investigated brines are exploited from various geological structures composed of the rocks of different chemical and mineral composition as well as different age and depth. All investigated brines are used in balneotherapy (i.e. baths, inhalations, showers). The main goal of this study was to obtain some basic knowledge on the activity range of natural elements such as uranium, radium and radon in different brine types in Poland and their variability depending on their location in certain geological structures. Activities of 234,238U, 226,228Ra and 222Rn isotopes were measured with the use of two nuclear spectrometry techniques: liquid scintillation and alpha spectrometry. The activity concentrations of 222Rn vary from below 1 to 76.1 plus or minus 3.7 Bq/l, for the 226Ra isotope from 0.19 plus or minus 0.01 to 85.5 plus or minus 0.4 Bq/l and for 228Ra from below 0.03 to 2.17 plus or minus 0.09 Bq/l. For uranium isotopes, the concentrations are in the range from below 0.5 to 5.1 plus or minus 0.4 mBq/l for 238U and from 1.6 plus or minus 0.4 to 45.6 plus or minus 2.0 mBq/l for 234U. The obtained results indicate high radium activity concentrations corresponding to high mineralization of waters.

Źródło:

Nukleonika; 2010, 55, 4; 519-522
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

The influence of air conditioning changes on the effective dose due to radon and its short-lived decay products

Autorzy:

Grządziel, A.
Kozak, K.
Mazur, J.
Połednik, B.
Dudzińska, M. R.
Bilska, I.

Powiązania:

https://bibliotekanauki.pl/articles/147303.pdf

Data publikacji:

2016

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
radon progeny
attached fraction of radon progeny
unattached fraction of radon progeny
dose conversion factor

Opis:

Most people spend the majority of their time in indoor environments where the level of harmful pollutants is often significantly higher than outdoors. Radon (222Rn) and its decay products are the example of radioactive pollutants. These radioisotopes are the main source of ionizing radiation in non-industrial buildings. The aim of the study was to determine the impact of air-conditioning system on radon and its progeny concentrations and thus on the effective dose. The measurements were carried out in the auditorium at the Environmental Engineering Faculty (Lublin University of Technology, Poland). Measurements of radon and its progeny (in attached and unattached fractions) as well as measurements of the following indoor air parameters were performed in two air-conditioning (AC) operation modes: AC ON and AC ON/OFF. The air supply rate and air recirculation were taken into consideration. The separation of radon progeny into attached and unattached fractions allowed for determining, respectively, the dose conversion factor (DCF) and the inhalation dose for teachers and students in the auditorium. A considerable increase of the mean radon progeny concentrations from 1.2 Bq/m3 to 5.0 Bq/m3 was observed in the AC ON/OFF mode compared to the AC ON mode. This also resulted in the increase of the inhalation dose from 0.005 mSv/y to 0.016 mSv/y (for 200 h/year). Furthermore, the change of the air recirculation rate from 0% to 80% resulted in a decrease of the mean radon concentration from 30 Bq/m3 to 12 Bq/m3 and the reduction of the mean radon progeny concentration from 1.4 Bq/m3 to 0.8 Bq/m3. This resulted in the reduction of the inhalation dose from 0.006 mSv/y to 0.003 mSv/y.

Źródło:

Nukleonika; 2016, 61, 3; 239-244
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Emisja radonu w obszarze zakładów górniczo-hutniczych "Bolesław" S.A
Radon emission in the area of Mining and Metallurgical Works "Bolesław"

Autorzy:

Wysocka, M.
Zych, A.
Skowronek, J.
Pajor, G.

Powiązania:

https://bibliotekanauki.pl/articles/2074382.pdf

Data publikacji:

2005

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

radon
ekshalacja radonu
emisja radonu
radium
radon exhalation
radiological contamination

Opis:

Exploitation of the mineral resources and accumulation of the postexploitation wastes may in some cases increase the radiological hard for the inhabitants of the mining regions, as well as for the environment. Radon emission levels in the area of lead and zinc ores exploitation have been measured. Additional measure-ments were performed in the areas not affected by human activity, at the outcrops of Triassic rocks. The radon emis-sions do not exceed average values measured in undisturbed areas. Moreover, results obtained at the sites where waste storage sites are lower than those from ”normal“ areas.

Źródło:

Przegląd Geologiczny; 2005, 53, 2; 133--136
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

A note on strictly positive Radon measures

Autorzy:

Plebanek, Grzegorz

Powiązania:

https://bibliotekanauki.pl/articles/967029.pdf

Data publikacji:

1996

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Źródło:

Colloquium Mathematicum; 1996, 69, 2; 187-192
0010-1354

Pojawia się w:

Colloquium Mathematicum

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Distribution of indoor radon concentrations between selected Hungarian thermal baths

Autorzy:

Shahrokhi, A.
Nagy, E.
Csordás, A.
Somlai, J.
Kovács, T.

Powiązania:

https://bibliotekanauki.pl/articles/147307.pdf

Data publikacji:

2016

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

AlphaGUARD
CR-39
EU BSS
Hungary
radon
thermal bath

Opis:

Owing to the high potential of radon to increase the risk of lung cancer, health organizations are enforced to update their regulations and recommendations regarding indoor radon levels each year. In this study, the indoor radon concentrations of three randomly selected thermal baths in Hungary using CR-39 and an AlphaGUARD radon monitor were measured with regard to the new updated standards of the European Basic Safety Standard (EU BSS, Council Directive 2013/59/Euratom, 2014). The annual average of indoor radon concentrations in Parad Medical Bath, Igal Health Spa and Eger Turkish Bath were measured as 159 ± 19, 176 ± 27 and 301 ± 30 Bq/m3, respectively. Indoor radon concentration in all measurement locations were determined to be below the reference level, with the exception of the main pool, small pool and sparkling bath areas in the Eger Turkish Bath that were measured as 403 ± 42, 315 ± 32 and 354 ± 36 Bq/m3, respectively. In light of the results, the estimated annual average radon concentration in the thermal baths was below the EU BSS reference level of 300 Bq/m3. Personal dosimetry is required to estimate the annual effective dose from inhaled radon by the workers at the Eger Turkish Bath. This procedure is required in order to justify the application of the mitigation process of decreasing working hours, improving the ventilation rate or increasing the number of classified employees in response to the official radiation surveillance programme.

Źródło:

Nukleonika; 2016, 61, 3; 333-336
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Radon in drinking water in the Białystok region of Poland

Autorzy:

Karpińska, M.
Kapała, J.
Mnich, Z.
Szpak, A.

Powiązania:

https://bibliotekanauki.pl/articles/148370.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon in water
Białystok region
liquid scintillation

Opis:

Water is one of the indoor sources of 222Rn. As radon is soluble in water, it is carried indoor by water supply and there it is released. The presence of radon in groundwaters is caused by direct migration of 222Rn from rocks and soil to waters as well as by radium content in water. Radon inflow indoor is possible in the areas where drinking water shows high radon concentration. Radon concentration changes significantly from low in natural surface water to relatively high from water in drilled wells. It is estimated that out of 10,000 Bq·m–3 of radon contained in water supply we can obtain radon concentration increase by 1 Bq·m–3 indoor. The aim of the study was to measure radon in water supply in the Białystok region and also estimation of doses and investigation how the treatment influenced radon concentration in water. Water was collected from rural and municipal waterworks as well as from home wells. Measurements of radon concentration in particular stages of drawing and treatment of water in Białystok waterworks were also conducted. A liquid scintillation method was used in the study. The arithmetic mean of radon concentrations in the samples was equal to 5800 Bq·m–3, median – 4800 Bq·m–3, and geometric mean – 4600 Bq·m–3. The lowest values of radon concentration were observed in surface waters (from surface intake). Radon concentrations in waters from drilled wells, shallow home wells and surface intake were compared and statistically significant differences were obtained at p < 0.05. The results of radon concentrations in drinking water in the Białystok area revealed radon-poor waters (88%) and low-radon waters (12%).

Źródło:

Nukleonika; 2010, 55, 2; 177-180
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Świadomość skażenia otoczenia człowieka radonem
Awareness of radon contamination of our environment

Autorzy:

Para, A.K.
Para, A.W.

Powiązania:

https://bibliotekanauki.pl/articles/887058.pdf

Data publikacji:

2013

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

skazenia srodowiska
radon
promieniowanie jadrowe
detektory
swiadomosc spoleczna
zagrozenia zdrowia
zagrozenia srodowiska

Źródło:

Scientific Review Engineering and Environmental Sciences; 2013, 22, 1[59]
1732-9353

Pojawia się w:

Scientific Review Engineering and Environmental Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

The effect of earthquake-induced radon release on the population in the seismic active regions of Armenia

Autorzy:

Saghatelyan, E.
Petrosyan, A.
Aghabalyan, Y.
Baburyan, M.
Davtyan, A.

Powiązania:

https://bibliotekanauki.pl/articles/340837.pdf

Data publikacji:

2004

Wydawca:

Główny Instytut Górnictwa

Tematy:

uwalnianie radonu
skażenie radonem
ochrona radiologiczna w Armenii
trzęsienie ziemi
radon release
radon contamination
radiological protection in Armenia
earthquake

Źródło:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa; 2004, 1; 137-138
1643-7608

Pojawia się w:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Radon and thoron parallel measurements in dwellings nearby a closed Hungarian uranium mine

Autorzy:

Németh, C.
Jobbágy, V.
Kávási, N.
Somlai, J.
Kovács, T.
Tokonami, S.

Powiązania:

https://bibliotekanauki.pl/articles/148705.pdf

Data publikacji:

2010

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon
thoron
dwelling

Opis:

Integrated measurements of radon (222Rn) and thoron (220Rn) were executed in a Hungarian village, located in the vicinity of an abandoned uranium mine. The applied passive radon and thoron monitor was the RADUET which is based on a CR-39 track detector. The investigated 35 houses were one storey buildings made of bricks. The rock under the village is a gray-sandstone with an average of 136 and 77 Bqźkg–1 uranium and thorium, respectively. The detectors were mostly placed in the inhabited areas of the houses, such as bedrooms and living-rooms, at a height of 1–1.5 m close to the wall. The measurement periods were between December 2006 and May 2007 and between May 2007 and February 2008. Annual averages of radon concentrations were calculated applying seasonal correction factors to the results of the two measurement periods. The results show that the radon concentrations in the case of considerable part of the investigated dwellings seems to be significantly higher than the Hungarian averages for ground-floor houses (152 Bqźm–3). The thoron concentrations in some cases are also not negligible indicating that radon measurements which are sensitive to thoron can be misleading. Additionally, thoron can also be a contributor of extra dose.

Źródło:

Nukleonika; 2010, 55, 4; 459-462
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

The diagnosis of onboard generators (alternators)

Autorzy:

Gębura, A.
Radoń, T.

Powiązania:

https://bibliotekanauki.pl/articles/258804.pdf

Data publikacji:

2009

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

technical diagnostics
frequency modulation

Opis:

In the paper selected problems related to diagnostics of onboard generators and alternators fitted with control systems are discussed. Problems refer to commutator generators and synchronous single- and threephase alternators. Special attention is paid to commutation effects. Results of incorrectness and possibility to detect them are discussed. There are also discussed effects associated with changes in a character of pulsation, which occur during shortings or insulation clearances in rotor or stator wiring. Possibility of diagnosis of generator’s or alternator’s parts by means of analysis of pulsation component parameters is indicated. In the case of alternators a number of diagnostic methods based on observation of changes in shape of voltage or frequency modulation, is discussed. This allows to detect many mechanical or electrical faults of generators, alternators or their control systems.

Źródło:

Polish Maritime Research; 2009, 3; 36-40
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Radon-based technique for the analysis of atmospheric stability : a case study from Central Poland

Autorzy:

Podstawczyńska, A.
Chambers, S. D.

Powiązania:

https://bibliotekanauki.pl/articles/146556.pdf

Data publikacji:

2018

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

radon-222
Central Poland
stability classification
stable nocturnal boundary layer
atmospheric mixing state
Polska centralna
klasyfikacja stabilności

Opis:

An economical and easy-to-implement technique is outlined by which the mean nocturnal atmospheric mixing state (“stability”) can be assessed over a broad (city-scale) heterogeneous region solely based on near- -surface (2 m above ground level [a.g.l.]) observations of the passive tracer radon-222. The results presented here are mainly based on summer data of hourly meteorological and radon observations near Łodź, Central Poland, from 4 years (2008–2011). Behaviour of the near-surface wind speed and vertical temperature gradient (the primary controls of the nocturnal atmospheric mixing state), as well as the urban heat island intensity, are investigated within each of the four radon-based nocturnal stability categories derived for this study (least stable, weakly stable, moderately stable, and stable). On average, the most (least) stable nights were characterized by vertical temperature gradient of 1.1 (0.5)⁰C·m-1, wind speed of ~0.4 (~1.0) m·s-1, and urban heat island intensity of 4.5 (0.5)⁰C. For sites more than 20 km inland from the coast, where soils are not completely saturated or frozen, radon-based nocturnal stability classification can significantly enhance and simplify a range of environmental research applications (e.g. urban climate studies, urban pollution studies, regulatory dispersion modelling, and evaluating the performance of regional climate and pollution models).

Źródło:

Nukleonika; 2018, 63, 2; 47-54
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:

Un espace de Banach réticulé qui a presque la propriété de Radon-Nikodym

Autorzy:

Talagrand, Michel

Powiązania:

https://bibliotekanauki.pl/articles/1388709.pdf

Data publikacji:

1983

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Źródło:

Studia Mathematica; 1983, 76, 3; 255-266
0039-3223

Pojawia się w:

Studia Mathematica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Issues of radon (Rn-222) exhalation measurements
Problematyka pomiarów ekshalacji radonu (Rn-222)

Autorzy:

Modzelewska, D.
Dołhańczuk-Śródka, A.
Ziembik, Z.

Powiązania:

https://bibliotekanauki.pl/articles/126822.pdf

Data publikacji:

2014

Wydawca:

Towarzystwo Chemii i Inżynierii Ekologicznej

Tematy:

radon
exhalation
concentration
measurement uncertainty
AlphaGUARD
ekshalacja
stężenie
niepewność pomiarowa

Opis:

The Rn-222 isotope, a naturally occurring radioactive gas, is created in a radioactive decay of Ra-226. Both radionuclides belong to the radium decay chain in which U-238 is the prime parent. Radon is usually in plenty found in the earth crust, rocks, soil, water and air, therefore it is regarded as an indicator of ionizing radiation dose received by a population. Due to radon negative influence on people’s health, measurements of its concentration are commonly performed. The presented research concerns assessment of measurements uncertainty of Rn-222 concentration exhaled from soil. The measurements were repeated at the same site. The experiment was carried out in natural conditions, in the city center and lasted about half a year. In Rn-222 concentration measurements the AlphaGUARD radon monitor was used. The device was operating in the 10-minutes flow mode, with the air pump and exhalation-box arranged in the closed cycle. The studies have shown a significant differences between results of radon exhalation measurements, which were carried out sequentially in the same place. Generally, increase in measurements number in a series lowers the result uncertainty. Consequently, the number of measurements in a series can be adjusted to the desired uncertainty of result. What is more, the distribution of the results in series is well described by the Poisson distribution.
Izotop Rn-222, naturalnie występujący radioaktywny gaz, powstaje na skutek rozpadu promieniotwórczego Ra-226. Oba radionuklidy należą do szeregu uranowo-radowego, który rozpoczyna U-238. Radon występuje w dużych ilościach w skorupie ziemskiej, skałach, glebie, wodzie i powietrzu, dlatego jest on traktowany jako wskaźnik dawki promieniowania jonizującego otrzymywanego przez ludzi. Ze względu na negatywny wpływ radonu na zdrowie ludzi pomiary stężenia tego gazu są często wykonywane. Zaprezentowano wyniki badań niepewności pomiarowej stężenia Rn-222 w powietrzu ekshalowanym z gleby. Pomiary powtarzano wielokrotnie w tym samym miejscu. Eksperyment przeprowadzony został w warunkach naturalnych, w centrum miasta i obejmował okres około pół roku. Do pomiarów stężenia radonu wykorzystano monitor radonowy AlphaGUARD. Pracował on w 10-minutowym trybie przepływowym, z pompą oraz komorą ekshalacyjną w obiegu zamkniętym. Badania wykazały znaczne różnice pomiędzy wynikami pomiarów, wykonywanych w całym okresie badawczym. W pojedynczej serii większa liczba pomiarów zmniejsza niepewność pomiarową. Dzięki temu ilość pomiarów w serii może być dostosowana do oczekiwanej niepewności pomiarowej wyniku. Stwierdzono, że rozkład wyników aktywności radonu w serii jest dobrze opisywany przez rozkład Poissona.

Źródło:

Proceedings of ECOpole; 2014, 8, 2; 409-415
1898-617X
2084-4557

Pojawia się w:

Proceedings of ECOpole

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

The Laboratory of Natural Radiation (LNR) : a place to test radon instruments under variable conditions of radon concentration and climatic variables

Autorzy:

Quindós Poncela, L. S.
Sainz Fernández, C.
Gutiérrez-Villanueva, J.-L.
Fuente Merino, I.
Celaya González, C.
Quindós López, L.
Quindós López, J.
Fernández Lopez, E.
Fernández Villar, A.

Powiązania:

https://bibliotekanauki.pl/articles/147764.pdf

Data publikacji:

2016

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

active monitors
interlaboratory comparison
in-situ
radon

Opis:

The publication of the new European Union Basic Safety Standards represents a remarkable milestone in the fi eld of radiological protection in terms of adding radon exposure to this framework. Therefore, the coming years will bring the need to measure radon not only in the workplaces but also in the living spaces as a direct outcome of the application of the new EU Directive. So, the importance of having reliable instruments is evident and interlaboratory exercises are becoming more and more popular. However, most of them are carried out under constant conditions of meteorological variables. We present in this paper a facility to broaden the interlaboratory comparisons further by adding the study of radon exposures under real conditions of changes in climatic parameters. In addition, the facility has the possibility to verify the response of radon monitors when the radon concentration changes several orders of magnitude in a short period of time. Our work shows some results of one of the interlaboratory exercises carried out in the premises, where the radon levels were rather homogeneous in the testing room.

Źródło:

Nukleonika; 2016, 61, 3; 275-280
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 47.

Tytuł:

Investigation of Radon Concentrations in Pamukkale-Turkey

Autorzy:

Kulalı, F.
Akkurt, İ.

Powiązania:

https://bibliotekanauki.pl/articles/1402504.pdf

Data publikacji:

2015-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

87.56.B-
87.66.-a

Opis:

Radon is an inert gas produced by the radioactive decay of radium with a half-life of 3.81 days. Radon is the largest source of natural ionizing radiation and every 2.6 km² of surface soil, to a depth of 15 cm, contains approximately 1 gram of radium, which releases radon in small amounts to the atmosphere. On a global scale, it is estimated that 91 TBq of radon are released from soil annually. In this work, the radon concentration in soil gas, which is transported from soil (1 m depth), is measured at five points in Pamukkale and its neighbourhood.

Źródło:

Acta Physica Polonica A; 2015, 128, 2B; B-445-B-446
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Ventilation: a technique for indoor radon mitigation
Wentylacja: technika obniżania zagrożenia radonowego wewnątrz pomieszczeń mieszkalnych

Autorzy:

Kant, K.
Chauhan, R.
Chakarvarti, S.

Powiązania:

https://bibliotekanauki.pl/articles/340800.pdf

Data publikacji:

2004

Wydawca:

Główny Instytut Górnictwa

Tematy:

stężenie radonu
środki zaradcze
wentylacja
SSNTDs
wentylator wydechowy
radon concentration
remediation
ventilation
exhaust fan

Źródło:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa; 2004, 1; 110-111
1643-7608

Pojawia się w:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:

Preliminary results of radon survey in thermal spas in V4 countries

Autorzy:

Műllerová, M.
Mazur, J.
Blahušiak, P.
Grządziel, D.
Holý, K.
Kovács, T.
Kozak, K.
Nagy, E.
Neznal, M.
Shahrokhi, A.

Powiązania:

https://bibliotekanauki.pl/articles/146825.pdf

Data publikacji:

2016

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

indoor radon
thermal spas
thermal water

Opis:

Radon concentration was measured in 11 thermal spas in Visegrad countries (Czech Republic, Hungary, Poland, and Slovakia). The results showed that in 84% of spas radon activity concentration is less than 400 Bq·m–3. However, areas with radon activity concentration exceeding 1000 Bq·m–3 were found in the Czech Republic and Slovakia as well. Preliminary analyses indicated that the highest radon activities in spas were found in places with thermal pools. Radon concentration in waters used in spas ranged from 0.5 Bq/l to 384 Bq/l. The influence of radon activity concentration in water on radon activity in the air inside the spa was observed. It was found to increase indoor radon with increasing radon in the waters. Correlation with indoor radon and radon in water was more significant for baths and less significant for pool waters. In the cases filling of the bath from water taps, significantly contribute to the increased radon was observed in the pool and bath areas of the spa.

Źródło:

Nukleonika; 2016, 61, 3; 303-306
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

A new geostatistical tool for the analysis of the geographical variability of the indoor radon activity

Autorzy:

Loffredo, Filomena
Scala, Antonio
Adinolfi, Guido Maria
Savino, Federica
Quarto, Maria

Powiązania:

https://bibliotekanauki.pl/articles/147965.pdf

Data publikacji:

2020

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

geographical variability
geostatistics
Gini coefficient
Lorenz curve
radon concentration
variogram

Opis:

The population is continuously exposed to a background level of ionizing radiation due to the natural radioactivity and, in particular, with radon (222Rn). Radon gas has been classified as the second leading cause of lung cancer after tobacco smoke [1]. In the confined environment, radon concentration can reach harmful level and vary accordingly to many factors. Since the primary source of radon in dwellings is the subsurface, the risk assessment and reduction cannot disregard the identification of the local geology and the environmental predisposing factors. In this article, we propose a new methodology, based on the computation of the Gini coefficients at different spatial scales, to estimate the spatial correlation and the geographical variability of radon concentrations. This variability can be interpreted as a signature of the different subsurface geological conditions. The Gini coefficient computation is a statistical tool widely used to determine the degree of inhomogeneity of different kinds of distributions. We generated several simulated radon distributions, and the proposed tool has been validated by comparing the variograms based on the semi-variance computation with those ones based on the Gini coefficient. The Gini coefficient variogram is shown to be a good estimator of the inhomogeneity degree of radon concentration. Indeed, it allows to better constrain the critical distance below which the radon geological source can be considered as uniform at least for the investigated length scales of variability; it also better discriminates the fluctuations due to the environmental predisposing factors from those ones due to the random spatially uncorrelated noise.

Źródło:

Nukleonika; 2020, 65, 2; 99-104
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

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