Wyniki wyszukiwania - Biblioteka Nauki

1

Wykorzystanie energii wietrznej w rekultywacji jezior

100%

Podsiadłowski S.

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tom Nr 4

14-15

2

Project of Coagulant Dispenser in Pulverization Aerator With Wind Drive

45%

Osuch E. , Osuch A. , Podsiadłowski S. , Piechnik L. , Chwirot D.

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tom Vol. 18, nr 5

192--198

EN

Lakes are one of most important freshwater ecosystems, playing significant role in functioning of nature and human economy. Swarzędzkie Lake is good example of ecosystem, which in last half-century was exposed to the influence of strong anthropopressure. Direct inflow of sewage with large number of biogens coming to the lake with water of inflows caused distinct disturbance of its functioning. In autumn 2011 restoration bagan on Swarzędzkie Lake for reduction of lake trophy and improvement of water quality. For achieving better and quicker effect, simultaneously combination of some methods was applied, among others method of oxygenation of over-bottom water with help of pulverization aerator and method of precise inactivation of phosphorus in water depths. Characterization and analysis of improved coagulant dispenser applying active substance only during work of pulverization aerator is the aim of this thesis. Principle of dispenser work, its structure and location in pulverization aerator were explained. It was stated that introduction to water a factor initiating process of phosphorus inactivation causes significant reduction of mineral phosphorus in water and size of coagulant dose correlates with intensity of work of pulverization aerator with wind drive.

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Analiza czynników wpływających na segregację odpadów przez gospodarstwa domowe z wykorzystaniem metody AHP

38%

Osuch E. , Osuch A. , Podsiadłowski S. , Rybacki P. , Adamski M. , Mioduszewska N.

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tom Nr 47

157--162

PL

Wzrost liczby ludności i nieustanny wzrost konsumpcjonizmu powodują powstawanie coraz większej ilości odpadów różnego pochodzenia. Segregacja odpadów stanowi nadal duży problem dla możliwości selektywnej zbiórki odpadów. Świadomość i wiedza ludzi w zakresie dbania o środowisko naturalne jest coraz większa. Coraz więcej ludzi przekonuje się do konieczności segregowania swoich odpadów, jednakże w podjęciu decyzji każdy z nich mógł kierować się innymi czynnikami. Celem pracy było zebranie czynników szczegółowych, jakie wpłynęły na decyzję o segregowaniu odpadów przez osoby regularnie je segregujące, pogrupowaniu je w czynniki główne i określenia ich wpływu na globalną decyzję. W pracy wykorzystano metodę Analitycznej Hierarchizacji Procesu, która pozwala na określenie wpływu poszczególnych czynników na decyzję. Badania przeprowadzone były wśród 30 losowo wybranych respondentów z województwa wielkopolskiego. Badania wykazują na wysoka świadomość ludzi o konieczności dbania o środowisko naturalne.

EN

The population and the consumerism increase cause producing different kinds of waste. Segregation is still the biggest problem of the selective collection of waste. The awareness and the knowledge of people in caring about the natural environment is growing. More people are becoming convinced to sort their waste. However, in making a decision about segregation, each of them could be influenced by other factors. The aim of this study was to collect detailed factors which influence the decision about waste segregation. Research was conducted among people who regularly sort waste. Then the main factors were grouped and their influence on the global decision was shown. In this paper a method of the Analytical Hierarchization of the Process was used. Research was conducted amongst 30 randomly chosen respondents from the Wielkopolska Voivodeship. The results of the research showed high awareness of people about the need to care about the natural environment

4

Assessment of the Condition of Samołęskie Lake Waters

38%

Osuch E. , Osuch A. , Podsiadłowski S. , Rybacki P. , Adamski M. , Ratajczak J.

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tom Vol. 17, nr 2

108--112

EN

Samołęskie Lake is situated in the Poznań Lakeland in Greater Poland Voivodeship, Szamotuły County, Wronki District. The lake adjoins a little village of Samołęż of about 500 residents. The glacial waterbody of over 30ha acreage is a typical tunnel-valley lake having a maximum depth of over 22 meters. It predominantly serves fishing and recreation purposes offering a beach and a sailing center. Near the coastline (not in the direct vicinity) there is a farmland. The objective of the dissertation was to assess the quality of Samołęskie Lake waters that was delivered based on the studies carried out in spring and summer, when the waterbody demonstrates excessive fertility. The studies covered the analysis of the basic physical and chemical parameters of the lake water. The measurement was carried out on a fortnight basis by means of a measurement apparatus such as the photometer and the Secchi disc. The collected results are presented with the use of figures later in this paper, whereas their in-depth analysis allowed to compile and formulate conclusions. The results of studies and analyses lay the foundations to state that the quality of Samołęskie Lake waters requires continuous monitoring and application of remedial and rehabilitation measures.

5

Functioning of the Lake Rusałka ecosystem in Poznań (western Poland)

32%

Gołdyn R. , Szeląg-Wasielewska E. , Kowalczewska-Madura K. , Dondajewska R. , Budzyńska A. , Podsiadłowski S. , Domek P. , Romanowicz-Brzozowska W.

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tom Vol. 39, No.3

65-80

EN

Lake Rusałka is a shallow, artificial, strongly eutrophic reservoir. Thermal stratification is weak and comprises only about 8% of the bottom surface. In summer, the epilimnion is oversaturated with oxygen due to intensive phytoplankton growth (chlorophyll a up to 80.2 μg l^-1), while conditions in the hypolimnion are anaerobic. The high concentration of ammonium nitrogen and low N:P ratio stimulated intense growth of cyanobacteria in the period from June to November. The domination of rotifers in the metazooplankton and low diversity and biomass of benthic macroinvertebrates was the cause of low top-down pressure of these organisms on the phytoplankton. The most advantageous restoration measures were identified to improve water quality and make the recreational use of the lake possible.