Wyniki wyszukiwania

1

Ammonia emission as an environmental threat

100%

Kanoniuk D., Podgorski W.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2004

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tom 01

2

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Chemical criteria in the critical loads concept

84%

Mill W.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2002

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tom 481

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nr 1

The critical loads concept has been developed under the Convention on Long-Range Transboundary Air Pollution as a scientific basis for the negotiations of its environmentally effect-oriented protocols. The basic idea of this concept is to balance the atmospheric depositions which a given ecosystem is exposed to with the capacity of this ecosystem to buffer the input in the system. Accordingly, a critical loads approach to control acidic emissions in relation to their ecological effects has been introduced. Critical load is defined as "a quantitative estimate of an exposure to one or more pollutants below which significant harmful effects on specified sensitive elements of the environment do not occur according to present knowledge". In this study, the critical loads approach has been applied to the problem of forest ecosystem acidification resulting from sulfur and nitrogen emission. There are several criteria that may be used as critical chemical limits in forest soil solution. These are critical pH, critical Al concentration, critical BC/A1 ratio and Al depletion criterion. The reliability of the calculated critical loads is strongly influenced by the quality of the chemical criteria applied. For abiotic aspects like soil chemistry or ground water quality the critical limits are clear because the dose-effect relations are quite well understood. For biotic indicators like root damage it is more difficult to find critical limits which can be used as threshold levels below which effects are negligible. The process of root damage is quite a complex one and a combination of side factors like droughts and adverse soil chemical condition may contribute to it. So, when a single critical limit such as the ВС/Al ratio is used, this will inherently lead to a considerable uncertainty in the value of this critical limit. Critical limits are based on laboratory experiments during a limited period of time in which sample roots are subject to constantly elevated BC/A1 ratios. One of major problems in applying this kind of criteria is the interpretation of the laboratory bioassay results in relation to field conditions. The aim of this paper is to summarize the current knowledge and to formulate the major questions that should be answered to abate the existing uncertainty in relating the anthropogenically modified soil chemistry and the reaction of forest ecosystems.

3

The proposed methodology for analysis of ecological problems concerning the technical infrastructure of motor transport

84%

Zielinska E., Leja K.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2011

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tom 11

4

Heavy metal in falling dust in eastern Mazowieckie Province

84%

Krolak E.

Polish Journal of Environmental Studies

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2000

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tom 09

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nr 6

517-522

Deposition of Cu, Zn, Mn, Cr, Ni, Pb and Cd, and their concentrations in falling dust were measured in 1995-1998 in eastern Mazowieckie Province (former Siedleckie Province). No maximum permissible values of dust deposition, nor Pb and Cd concentrations, were exceeded. It was observed that the elements of low melting temperatures (Pb, Zn) reached higher concentrations in particulate matter, and higher deposition level in heating season compared with summer. Among all the examined metals Ni appeared to be the most stable in falling particulate matter. The results indicate that the main source of metals in falling particulate matter is the thermal and electric power industry.

5

Functional diagnosis of respiratory efficiency of cokery mill employees working in a polluted atmosphere

84%

Kolarzyk E., Stepniewski M.

Polish Journal of Environmental Studies

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1999

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tom 08

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nr 4

Reaction of the airways to inhaled Berodual was evaluated in two groups of metallurgists surveilled by systematic, complex medical examinations for appx. 25 years: 31 coke oven and 31 cold-rolling mill workers. All subjects under examination were active smokers, smoking more than 20 cigarettes a day. The frequency of ventilatory disorders: central bronchi obturation, small bronchi obturation and emphysemal changes, as well as microclimatic conditions of their living places, even mean anthropometric indices were similar. The main differentiating factor was presence of air pollutants in their workshops. Employees of coke owen division were exposed to variety of noxious substances: CO, NOx, SO2, benzene, its derivatives, HCN and policyclic aromatic hydrocarbons. In cold rolling division concentration of air pollutions was much smaller and virtually devoided of BaP. As revealed by Berodual provocation test in coke owen workers irreversible obturation and fixed emphysemal changes were far more frequent than in workers of cold rolling mill performing their job in favorable microclimatic conditions.

6

Energy balance for a three-way catalytic reactor

67%

Ambrozik A., Danilczyk W., Kruczynski S.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2006

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tom 06

7

Comprehensive solution of the problem of acidification of soils in the province of Silesia caused by anthropogenic transformations

67%

Jackowska I., Kaczor A.

Acta Agrophysica. Rozprawy i Monografie

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2010

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nr 7[186]

8

Measurements of the deposition of selected compounds in the forest in Wolin National Park; A review

67%

Poleszczuk G., Lysiak-Pastuszak E.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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1998

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tom 02

9

Wplyw napiecia zasilania filtru bifilarnego na skutecznosc usuwania pylow roslinnych z powietrza

67%

Sumorek A., Pietrzyk W.

Acta Agrophysica

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2003

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tom 82

165-175

10

Tendencies of changes in the chemical composition of precipitation in the Wielkopolski National Park

67%

Walna B., Kurzyca I.

Journal of Water and Land Development

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2009

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nr 13a

11

Oznaczanie ogolnej liczby grzybow w powietrzu atmosferycznym i wewnatrz pomieszczen

67%

Krogulski A., Podsiadly T.

Roczniki Państwowego Zakładu Higieny

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