Wyniki wyszukiwania - Biblioteka Nauki

1

Możliwości rekultywacji jezior o różnych cechach morfometrycznych za pomocą koagulantów glinowych i żelazowych

100%

Łopata M. , Gawrońska H.

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tom Nr 4 (18)

44-45

PL

Michał Łopata 1 Ą fiatach 2001-2012 Katedra Inżynierii Ochrony Środowiska UWM w Olsztynie przygotowała i prze- Helena Gawrońska prowadziła pięć projektów rekultywacji jezior metodą inaktywacji fosforu. Zabiegom poddano jeziora o różnych typach hydrologicznych i zróżnicowanej morfometrii (tab. 1). Jako czynnika wiążącego fosfor we wszystkich przypadkach użyto chlorku poliglinu PAX 18 i w dwóch przypadkach siarczanu żelaza PIX 113. Na całość doświadczeń złożyło się czternaście aplikacji w pełnej skali technicznej.

2

Jeszcze o olejach do tłokowych silników lotniczych

100%

Gawrońska H. , Górski W.

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1998

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tom R. 7, nr 50

22-25

EN

On the basis of information forwarded by Mobil Oil Poland company, some facts about lubricating of aviation engines in the pioneering times are explained. Changes in requirements forblubricating oils for aircraft piston engine in the new editions of SAE specifications J 1899 and J 1966 are presented. Principles of new calculation method of the total ash content are given.

3

Ochrona zbiorników wodnych

100%

Lossow K. , Gawrońska H.

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2000

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tom nr 9

92-93

PL

Rekultywacja (odnowa) jezior ma na celu cofnięcie, zatrzymanie lub choćby tylko zwolnienie procesów eutrofizacji jezior, a czasami wręcz usunięcie jej ujemnych następstw. Ochrona zbiorników wodnych polega natomiast na ograniczeniu dopływu substancji biogennych (pożywkowych) i organicznych ze zlewni. Wszystkie metody rekultywacyjne są stosowane w obrębie misy jeziorowej, a ochronne - na terenach przyległych, w zlewni.

4

The influence of a long-term artificial aeration on the nitrogen compounds exchange between bottom sediments and water in Lake Długie

100%

Brzozowska R. , Gawrońska H.

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2009

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tom Vol. 38, No.1

113-119

EN

The study was conducted on a degraded Lake Długie in Olsztyn (surface area 26.8 ha, max depth 17.3 m) restored in 1987 – 2000 with the method of the artificial aeration with destratification. The aim of the study was to determine the influence of the applied method on the exchange of nitrogen compounds between the bottom sediments and overlying water. The results revealed that the applied method caused a decrease of nitrogen release from the bottom sediments and influenced the content of this component in the sediments. The observed changes may have been the effect of the intensification of the coupled nitrification-denitrification processes occurring in the aquatic conditions modified by the restoration.

5

Phosphorus immobilization in Lake Głęboczek following treatment with polyaluminum chloride

100%

Łopata M. , Gawrońska H.

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2008

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tom Vol. 37, No.2

99-105

EN

In 2001-2003, a survey was conducted of the effectiveness of restoration in the heavily eutrophic polymictic Lake Głęboczek, located in Tuchola. The application of the phosphorus inactivation method with polyaluminum chloride PAX 18 resulted in the complete removal of phosphates, and in a considerable (up to 50-60%) reduction of total phosphorus in the lake water. The sorptive capacity of the bottom sediments was enhanced after the restoration, particularly in the top layer (0-5 cm). An increase of the aluminum content and of mineral forms of phosphorus was observed, mainly the aluminum-bound fraction (at its greatest, by over 330%). The amount of mobile phosphorus in the sediments decreased by 40%. The evidence of the durable immobilization of phosphorus in the aquatic ecosystem was the limited phosphorus release from the bottom sediments. This was confirmed by a significant decrease of total phosphorus in the interstitial waters (from 4-6 mg dm-3 to 2-3 mg dm-3), and by a practically complete removal of phosphates from the near-bottom waters.

6

Paliwa płynne - masa, objętość, gęstość, kwarki i... podatek akcyzowy

100%

Gawrońska H. , Górski W.

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1999

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tom R. 8, nr 64

18-21

EN

Definitions of mass, volume, density and excise have been given. Referring to them a directive of Minister of Finances, requiring to calculate excise on the base of fuel volume at 15°C and changing an existing calculating system on the base of fuel mass, has been presented. A new excise calculating system is consistent with European Union regulations. In result of this directive, value of density at 15°C is needed. Technical, standardisation, calibration, and formal problems created by the directive have been described.

7

Ciecze eksploatacyjne. Podstawowe problemy biodegradowalności i ekotoksyczności

100%

Gawrońska H. , Górski W.

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1999

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tom R. 8, nr 65

38-42

EN

Some problems connected with environmental degradation caused by lubricants and other operating fluids have been presented. Preventive measures undertaken in other countries intending to limit present hazards have been signalised. Potential hazards resulting from use of petroleum fluids in Poland have been described.

8

Biodegradowalne ciecze eksploatacyjne a środowisko

100%

Gawrońska H. , Górski W.

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1999

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tom R. 8, nr 66

25-27

EN

Principles of biodegradation, definitions, classifications, and test methods used to biodegradability assessment of wide variety products have been described. Biodegradability test results obtained in different tests for some chemical compounds and typical biodegradability values of different base lubricants measured with the CEC method have been presented.

9

Toksykologiczne oddziaływanie cieczy eksploatacyjnych na środowisko

100%

Gawrońska H. , Górski W.

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1999

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tom R. 8, nr 67

12-15

EN

This paper describes briefly toxicological problems of operational fluids. The toxicological problems are presented by description of terms of toxicity, ecotoxicity, bioconcentration, regulatory limitations and test methods. Description of the test and test results obtained in the Microtox method are given. In summary, human health and environmental hazards are factors that cause more and more concern to the toxicology problems.

10

Biodegradowalność i ekotoksyczność wybranych rodzajów cieczy eksploatacyjnych

100%

Gawrońska H. , Górski W.

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1999

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tom R. 8, nr 68

5-13

EN

Financial resources and environmental initiatives in Poland in year 1999 have been presented. Biodegradability and ecotoxicity some operational fluids like: engine oils, hydraulic oils, metalworking fluids, lubricating greases, and brake and engine cooling fluids have been described. Problem has been illustrated by considerations about collecting and preventing measures with regard to legal and technical aspects.

11

Changes in the phytoplankton community of a lake restored with phosphorus inactivation (Lake Głęboczek, northern Poland)

80%

Jaworska B. , Gawrońska H. , Łopata M.

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2009

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tom Vol. 38, No.1

93-101

EN

The study applied qualitative and quantitative phytoplankton analysis as a tool for determining algal community characteristics and identifying the directions and general trends of changes caused by the restoration of Lake Głęboczek through phosphorous inactivation before and during its application. The method applied in the studied lake aimed at reducing phosphorous availability through the chemical precipitation of its excess mineral forms in the water body and limiting their mobility in the bottom sediments. Restoration efforts led to shifts in the phytoplankton domination structure followed by the inhibition of blue-green algae development. In consequence, a significant decrease was recorded in the growth rate of the phytoplankton community.

12

Strategia badania mechanizmu dezaktywacji metali przez rośliny. Cz. II: Genomika i specjacja bionieorganiczna "za pan brat"

71%

Pawlak K. , Ruzik R. , Lipiec E. , Ciurzyńska M. , Gawrońska H.

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2007

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tom nr 1

20-23

13

Rekultywacja Jeziora Wolsztyńskiego metodą inaktywacji fosforu

71%

Gawrońska H. , Lossow K. , Łopata M. , Brzozowska R. , Jaworska B.

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2007

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tom nr 6

75-78

PL

Główną przyczyną degradacji Jeziora Wolsztyńskiego byty wpływające przez wiele lat nieoczyszczone ścieki bytowe oraz zanieczyszczenia obszarowe. Mimo odcięcia ich dopływu i ograniczenia ładunków zanieczyszczeń wprowadzanych do jeziora jakość jego wód nie uległa większym zmianom. Wskazuje to na istotną rolę zasilania wewnętrznego, a to z kolei na potrzebę rekultywacji zbiornika.