Found 9746 publications. Showing page 367 of 390:
2006
2008
2006
The air quality in the National Museum of Art, Architecture and Design in Oslo, the National Gallery and the Museum of Decorative Arts and Design, was measured in several EU framwork program research projects in the period 2004-2013. The results from the measurements are reported and evaluations are made of the risk for damage to the museum objects due to the indoor environment, and of possible mitigating preventive conservation actions that could be implemented. The measurements did not show any critical environmental values, but some unwanted fluctuations, low values for relative humidity, and high values for climate, light and air pollution, which may be a risk for the conserveation of the objects. The relative humidity both in the National Gallery and the Museum of Decorative Arts and Design reached very low values in the winter (10-25%). This may constitute a risk for drying out and damage to organic materials such as textiles and paintings. The relative humidity in the National Gallery was strongly affected by the outdoor climate and in rain periods it could reach high values (values > 60 % were measured). This may constitute a risk for dimensional changes in and corrosion on objects, and possibly microbiological activity on surfaces. Quick fluctuations in relative humidity, that could cause dimensional stress and damage to objects, were measured in the Museum of Decorative Arts and Design. The light level in the Munch room in the National Galley was high and could damage tempera, oil paintings and more sensitive materials. The light levels in the Museum of Decorative Arts and Design were found to be acceptable. Concentrations of nitrogen dioxide infiltrating from outdoor, that could constitute a risk for damge to the obejects and materials, especially sensitive pigments and colourants, were measured in the exhibition rooms both in the National Gallery and in the Museum of Decorative Arts and Design. The air quality in the painting store room in the National Gallery was measured to be the same as in the exhibition rooms. The microclimate-frame that was used for a Munch painting in the National Gallery was found to protect this painting well against air pollution and UV-radiation, but gave little protection against the general light exposure, which was high in the Munch-room. The showcase, which was examined in the Museum of Decorative Arts and Design, reduced the fluctuations in the climate exposure of the exhibited objects and the concentration of air pollutants coming into the showcase from the room. The concentration of nitrogen dioxide in the showcase was still found to be higher than recommended and the modelling that was performed indicated that most of the nitrogen dioxide infiltrating into the showcase was deposited to the exhibited textiles. The exposure of the textiles to nitrogen dioxide constituted a risk for damage especially for sensitive colourants, but also for sensitive textils such as e.g. silk. Tightening of the showcase could have reduced the amount of nitrogen dioxide in it and the total negative effect of the air pollutants on the exhibited textiles. Possible installation of textile with activated carbon in the showcase could have reduced the amount of organic acids in a tighter showcase. A significant amount salt particles was measured to be present in the indoor air in the National Gallery. The sources were probably both windborne seasalt and deicing salts used around the building. Black particles that seemed to be deposited from the vetilation air was observed on the door and door case to the painting store room in the National Gallery.
2014
2010
Air quality in the border areas between Norway and USSR. Model description and modelling results NILU OR
1991
Measurement of air quality and evaluation of risk for damage to objects in three buildings belonging to the Museum of Cultural History in Oslo, were performed in the years 2010-13 as part of two EU projects: ¿TeACH¿ (Grant agreement no. 212458) (2008-2011) and ¿MEMORI¿ (Grant agreement no. 265132). The measuements were perforemed with different kinds of dust and particle collectors and with dosimetry measuring damage on sensitive materials.
2014
Air quality in Sandefjord, Norway. November 2021 – August 2023.
This report examines the air quality patterns in terms of particulate matter with a diameter less than 2.5 μm (PM2.5) in Sandefjord, Norway. PM2.5 was monitored through five low-cost sensors in hourly resolution from November 2021 to August 2023. The sensors’ reliability is high, with consistent PM2.5 measurements and similar variation over time. Occasional extreme PM2.5 was attributed to local contributions with higher values observed during cold months, or specific long-range transport events. Overall, Sandefjord maintained good air quality for most of the measurement period with daily PM2.5 levels below the air quality criteria. Residential heating activities (wood burning) is the most significant local source, being more pronounced during winter.
NILU
2024
Air Quality in Ny-Ålesund. Monitoring of Local Air Quality 2018.
De målte konsentrasjonene var generelt lave for alle komponenter og under nasjonale grenseverdier for beskyttelse av menneskets helse og økosystemet.Vind fra nordlige sektorer ga de høyeste gjennomsnittskonsentrasjonene av nitrogenoksider og svoveldioksid, noe som peker på kraftstasjonen og havnen som mulige kilder. Måleresultatene for CO2 viser en årlig variasjon, med høyere konsentrasjoner om vinteren og lavere om sommeren. Kilder for de målte konsentrasjonene av CO var mest sannsynlig lokal snøskutertrafikk.
NILU
2019
Air quality in Ny-Ålesund. Monitoring of local air quality 2016-2017.
The concentrations of the measured components are generally low and below national limit values for the protection of human health and critical levels for the protection of vegetation.
Wind from northern sectors gave the highest average concentrations of nitrogen oxides and sulphur dioxide, which indicates the power station and the harbour as possible sources. The measurement results for CO2 show an annual variation with higher concentrations in the winter and lower in summer. Measured concentrations of CO were most likely caused by local snowmobile traffic.
NILU
2018