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Johan Tidblad Vladimir Kucera Farid Samie Surendra N. Das Chalothorn Bhamornsut Leong Chow Peng King Lung So Zhao Dawei Le Thi Hong Lien Hans Schollenberger Chozi V. Lungu David Simbi 《Water, Air, & Soil Pollution: Focus》2007,7(1-3):241-247
Many national exposure programmes have been performed in tropical and subtropical climates during the last 50 years. However,
ambitious programmes involving more than a few countries are scarce. In this paper a recently formed network of test sites
is described involving 12 test sites in Asia (India, Vietnam, Thailand, Malaysia and China including Hong Kong) and four test
sites in Africa (South Africa, Zambia and Zimbabwe). This effort is part of the 2001–2004 Swedish International Development
Agency (SIDA) funded Programme on Regional Air Pollution in Developing Countries (RAPIDC). Corrosion attack after one (2002–2003)
year of exposure (carbon steel, zinc, copper, limestone and paint coated steel) are presented together with environmental
data (SO2, NO2, HNO3, O3, particles, amount and pH of precipitation, temperature and relative humidity) for all the test sites. The obtained corrosion
values are substantially higher than expected for limestone, higher than expected for carbon steel and lower than expected
for zinc compared to values calculated using the best available dose–response functions. 相似文献
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P. S. Hart J. Bodurtha F. O. Redwine J. S. Smeltzer L. Kucera J. B. McCall J. A. Brown 《黑龙江环境通报》1990,10(3):169-173
The most prevalent soft tissue tumour in children is rhabdomyosarcoma. These tumours may develop within or outside of muscle anywhere in the body and at any age. We report what is apparently the earliest case of non-cardiac rhabdomyosarcoma detected prenatally. 相似文献
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S.P. Kucera J.M. Swann J.R. Kennedy T.W. Schultz 《Journal of environmental science and health. Part. B》2013,48(6):779-799
Abstract The effects of the fungicide benomyl and its breakdown products, carbendazim and butyl isocyanate, were examined on canine tracheal epithelial tissue in primary culture. Changes in ciliary frequencies were monitored with an optical spectrum analysis system. Serial dilutions of the test compounds were prepared in 100% corn oil and applied to the cell cultures for intervals up to 6 hours and frequencies measured at intervals of 15 minutes to 1 hour. Benomyl and butyl isocyanate caused concentration‐dependent decreases in ciliary beat frequency. Benomyl at 300 μg/ml (3 mM) caused ciliostasis within 75 minutes of exposure. Butyl isocyanate at a molar concentration three times lower than benomyl (1 mM) caused a similar response, although within 30 minutes. The IBC50 for benomyl was 0.75 mM, while for butyl isocyanate it was 0.52 mM. Carbendazim caused a moderate decrease in frequency over a 6 hour exposure period. Benomyl caused moderate to severe swelling of the mitochondria of ciliated epithelial cells with other cell organelles appearing normal. Butyl isocyanate did not cause any noticeable effect on cell ultrastructure and the apparently low rate of penetration of carbendazim into cells made it impossible to obtain an effect which justified ultrastructural analysis. It appears, at least for benomyl and butyl isocyanate, that while the physiological effect of these two compounds (inhibition of ciliary beat) is the same, the sites of action in the cell may be different. 相似文献
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K. H. Rutters B. E. Law R. C. Kucera A. L. Gallant R. L. DeVelice C. J. Palmer 《Environmental monitoring and assessment》1992,20(1):21-33
Regional monitoring and assessments of the health of forested ecosystems require indicators of forest conditions and environmental stresses. Indicator selections depend on objectives and the strategy for data collection and analysis. This paper recommends a set of indicators to signal changes in forest ecosystem distribution, productivity, and disturbance. Additional measurements are recommended to help ascribe those changes to climate variation, atmospheric deposition, and land use patterns. The rationale for these indicators is discussed in the context of a sequential monitoring and assessment strategy. 相似文献
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Release of Metals from Buildings,Constructions and Products during Atmospheric Exposure in Stockholm
This article presents results from investigations of run-off frommaterials used on buildings and other constructions obtained byshort term exposures of smaller model surfaces and one year exposures of larger materials surfaces on buildings and other constructions. Elevated concentrations of metals in run-off wereobserved for a wide range of different materials used on buildings and other constructions. Sources of metal emission tothe environment includes copper (Cu) surfaces, galvanized steel,impregnated wood, lead (Pb) surfaces, asphalt surfaces, paintedmaterial stainless steel and concrete. Metal emission rates fromsurfaces of copper and galvanized steel were measured from surfaces on buildings during 12 months exposure. The magnitude of metal emission form other surfaces was also estimated and theapplicability of these data for calculations of metal flows inan urban environment is discussed. 相似文献
7.
Environmental samples, such as seawater, seaweed, lake water, lake sediment and grass collected from the Baltic Sea area were analyzed for 129I and 127I by radiochemical neutron activation analysis. In 2000, the concentration of 129I in the seawater from Borholm and M?en in the Baltic Sea has reached 6.0 x 10(-13) and 16 x 10(-13) g/l, respectively, these are more than two orders of magnitude higher than the global fallout level. The highest value of 270 x 10(-13) g/l being found in the seawater from the Kattegat. By comparison of the level of 129I in the lake water and precipitation in this region, it is estimated that more than 95% of 129I in the Baltic Sea originates from reprocessing emissions, especially from the French nuclear fuel reprocessing plant at La Hague. More than 30% of 129I in the south Baltic and 93% in the Kattegat directly originates from the marine discharges of the European reprocessing plants. 相似文献
8.
Vladimir Kucera Johan Tidblad Katerina Kreislova Dagmar Knotkova Markus Faller Daniel Reiss Rolf Snethlage Tim Yates Jan Henriksen Manfred Schreiner Michael Melcher Martin Ferm Roger-Alexandre Lefèvre Joanna Kobus 《Water, Air, & Soil Pollution: Focus》2007,7(1-3):249-258
A “multi-pollutant exposure programme” reflecting the new pollution situation where SO2 is no longer the dominating pollutant has been performed by the International Co-operative Programme on Effects on Materials,
including Historic and Cultural Monuments (ICP Materials) within the activities of the Convention on Long-range Transboundary
Air Pollution. The main results obtained in the period 1997–2003 are summarised. Dose-response functions are presented for
carbon steel, zinc, copper, bronze and limestone. Parameters involved in the functions include besides SO2 and pH, which were included in the previously developed functions from ICP Materials, also the effect of particulate matter
and HNO3. 相似文献
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BACKGROUND: Commercial fishing is carried out worldwide, often in non-industrialized forms, and is associated with high rates of fatal and non-fatal occupational injury. PROBLEM: Fishermen who work independently in non-industrialized settings do not have access to union or industry sponsored safety services and must make their own decisions about safety practices. Learning the meaning of safety for them and the safety measures they employ is important before developing interventions. METHODS: Two fieldworkers conducted in-depth ethnographic interviews with 31 commercial fishermen in North Carolina. Interviews and fieldnotes were analyzed using QSR N5. RESULTS: Fishermen primarily related staying safe to work practices and attitudes. They identified specific safety measures, appropriate gear and boat maintenance, weather decisions, and working cooperatively when ocean fishing. DISCUSSION: The ethnographic research process can produce information about a group's norms of preventive behavior and safety concerns. Knowledge of workers' concepts and practices will inform researchers' inquiries. 相似文献