Wyniki wyszukiwania - Biblioteka Nauki

1

Wpływ promieniowania jonizującego na Streptococcus lactis MB-6 w różnych fazach stadium rozwojowego

100%

Niewolak S.

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nr 02(108)

2

Przestrzenne rozmieszczenie i sezonowe zmiany liczebnosci bakterii wiazacych azot atmosferyczny [wolnozyjacych] i oligonitrofilnych w wodzie glebowo-gruntowej zlewni jeziora eutroficznego

100%

Niewolak S.

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nr 1

123-140

3

The occurrence of yeasts in some of the Masurian Lakes

100%

Niewolak S.

Acta Mycologica

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1976

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tom 12

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nr 2

4

Sanitary and bacterial analysis of water and bottom sediments of a heavily polluted, hypertrophic lake

100%

Niewolak S.

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nr 1-2

5

The evaluation of the degree of pollution and sanitary-bacteriological state of surface water in Wigry Lake, North-East Poland. Part III. Waters of Hanczanska Bay and the areas adjoing Wigry Lake

100%

Niewolak S.

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tom 10

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nr 3

EN

This work comprises the results of examinations of a number of indicator bacteria on the degree of pollution (TVC 20°C, TVC 37°C), sanitary state (TC, FC, FS), and usefulness for recreation of Hanczanska Bay and areas adjoining Wigry Lake. Adequate studies were made in 1997, a year after the start of 3rd degree sewage treatment in the Wastewater Treatment Plant in Suwalki. All of these bacteria in general were more numerous in the water of Hanczanska Bay, especially in spring-summer. In the waters of northern Ploso of Wigry Lake numbers of bacteria were only periodically numerous at some water samples. The highest percentage of pure water samples fulfilling the requirement for bathing waters was found at sites on the border between Hanczanska Bay and the waters of Northern Ploso of Wigry Lake; the lowest percentage was found at sites in Hanczanska Bay. Gradual decrease of TVC 20°C ( sometimes 37°C) with the distance from the mouth of the Czarna Hancza River towards south-east sites shows this direction of the movement of main water masses of the Czarna Hancza River. No significant differences in percentage of unpolluted water samples stated in Hanczanska Bay and areas adjoing Wigry Lake with a comparison of data from 1994-1996 years of investigation.

6

The sanitary and bacteriological quality of water flowing into Wadag Lake

100%

Niewolak S.

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nr 3

EN

A number of indicatory microorganisms are found in clean and lightly polluted surface water in the ditch in Słupy village and in the drainage ditch in the region of Barczewo; in the Elżbieta Canal and in Wójtowo stream - for clean (TVC 37°C), lightly (TC, FC, and FS), or strongly (TVC 20°C) polluted surface water; and for inconsiderably or noticeably (TVC 20°C and TVC 37°C) and strongly (TC, FC, FS and Clostridium perfnngens) polluted surface waters, in the Orzechówka and Pisa Rivers. An inconsiderable amount of pollution by indicatory microorganisms is characteristic of the waters of Wadąg Lake and the Wadąg River, which flows from this reservoir. The greater amount of pollution by these microorganisms in the investigated watercourses occurs after rainfall in May and/or June, in September 1992, and after rain and thawing in the lake in January 1993.

7

Evaluation of pollution and the sanitary-bacteriological state of Lake Wigry, Poland. Part II. Near-shore waters of Lake Wigry

100%

Niewolak S.

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nr 3

8

The sanitary and bacteriological estimation of surface and undergroung waters in the region of a pig slurry agricultural utilization

100%

Niewolak S.

Polish Journal of Environmental Studies

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1994

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tom 03

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nr 1

EN

A number of indicatory microorganisms of contamination (TVC 2Q°C, TVC 37°C) and sanitary (TC, FC, FS, Clostridium perfringens) states were investigated in pig slurry (fresh and stored in a four-lagoon system), the surface water of the drainage ditch in a region fertilized by the slurry, the water of the Łeba River, and in the ground water (shallow and deep) of this region. The highest numbers of indicatory microorganisms were found in fresh slurry. In the case of stored slurry, their numbers decreased 100-1000 times, reaching after one year the values which are permitted for agriculturally utilizing sewage. The highest numbers of indicatory microorganisms were found in the drainage ditch water and in the shallow and deep piezometers neighbouring ring the lagoons.

9

Total viable count and concentration of enteric bacteria in bottom sediments from the Czarna Hancza River, Northeast Poland

100%

Niewolak S.

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nr 5

EN

Studies were carried out to determine counts of TVC 20oC, TVC 37oC, TC, FC, FS and Clustridium perfringens in bottom sediments of the Czarna Hancza River, from about 1 cm layer, at 10 stations located in Suwalki region (stations 1 and 2), in the villages Sobolewo (stations 3 and 4), the old river bed of the Czarna Hancza and its intlow to Lake Wigry (stations 5 and 6), and in the villages Czerwony Folwark, Mackowa Ruda, Buda Ruska and Wysoki Most (stations 7-10) east of Lake Wigry. Bottom sediments from stations 1-4 and 7-l0 were mostly sandy, while at stations 5 and 6 they dominated by silty clay. Studies were carried out in 1995 and 1996, at monthly intervals with the exception of winter. Water was examined at the same time. All groups of indicatory bacteria were l00-1000 times more numerous in the bottom sediments than in water. They were usually least numerous in sandy bottom sediments, especially in the villages Buda Ruska and Wysoki Most (stations 9 and 10), and the highest in silty clay sediments in the region of the old Czarna Hancza bed and its inflow to Lake Wigry (stations 5 and 6). Minimal and maximal counts of indicatory bacteria were noted in different months upon particular sampling stations. Only sometimes curves of their numbers corresponded to the respective curves of bacteria counts in water. It is suggested that sanitary and bacteriological studies of water should be supplemented by respective studies of the surface layer of bottom sediments.

10

Bacteriological and sanitary evaluation of ponds supplied with biologically pretreated sewage under conditions of fish culture

63%

Niewolak S. , Tucholski S.

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tom 03

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nr 2

187-202

11

Cellulolytic, lecithin-mineralizing, tribasic calcium phosphate-solubilizing and sulfate-reducing bacteria in meadow soils irrigated with biologically treated sewage

63%

Niewolak S. , Tucholski S.

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nr 3

692-708

EN

The effect of irrigation (fresh water, treated sewage, treated sewage stored in a biological pond) and mineral fertilization (NPK) of meadow soils on the counts of aerobic and anaerobic cellulolytic bacteria, lecithin-mineralizing bacteria, tribasic calcium phosphate-solubilizing bacteria, anaerobic sulfate-reducing bacteria was examined. The studies were performed in 1996 and 1997 in 8 different variants of irrigation and fertilization on 32 plots in the vicinity of the treatment plant in Olsztynek. Aerobic and anaerobic cellulose-degrading bacteria generally occurred in greater numbers in the soil from the plots irrigated with fresh water and/or with treated sewage stored in biological pond (particularly for the maximum dose). They were sporadically recorded in NPK fertilized soil. Lecithin-mineralizing bacteria occurred in great numbers both in non-irrigated, non-fertilized soil and in soil irrigated with fresh water and/or treated sewage. Tribasic calcium phosphate-solubilizing bacteria were sometimes recorded in greater numbers in NPK fertilized soil. Sulfate-reducing bacteria usually occurred in small numbers in the soils irrespectively of the irrigation or fertilization variant. The bacteria groups under study were reported in greater numbers in the 0-10 cm soil layer with the exception of anaerobic cellulose-degrading bacteria which were more numerous in the 15–25 cm and the 30–50 cm soil layers.

PL

Zbadano wpływ nawadniania (wodą, oczyszczonymi ściekami, oczyszczonymi ściekami retencjonowanymi w stawie biologicznym) i nawożenia mineralnego NPK gleb łąkowych na liczebność bakterii rozkładających błonnik w warunkach tlenowych i beztlenowych, bakterii mineralizujących lecytynę i rozpuszczających fosforan trójwapniowy oraz beztlenowych bakterii redukujących siarczany. Badania przeprowadzono w latach 1996–1997 w 8 wariantach nawodnieniowo-nawożeniowych na 32 poletkach przy oczyszczalni ścieków w Olsztynku. Bakterie rozkładające błonnik w warunkach tlenowych i beztlenowych występowały z reguły liczniej w glebach nawadnianych wodą i/lub ściekami oczyszczonymi i następnie retencjonowanymi w stawie biologicznym, a niekiedy również w glebach nawożonych mineralnie NPK. Bakterie mineralizujące lecytynę występowały równie licznie zarówno w glebach nienawadnianych i nienawożonych, jak i w nawadnianych wodą i/lub oczyszczonymi ściekami. Liczba bakterii redukujących siarczany była natomiast znacznie niższa w glebach wszystkich wariantów nawodnieniowo-nawożeniowych. Badane grupy bakterii występowały na ogół liczniej w warstwie gleby 0–10 cm. Wyjątkiem były bakterie rozkładające błonnik w warunkach beztlenowych, które dominowały w głębszych warstwach (15–20 cm i 30–50 cm).

12

Badania mikrobiologiczne gleb lakowych nawadnianych biologicznie oczyszczonymi sciekami

63%

Niewolak S. , Tucholski S.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2001

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tom 477

431-442

PL

Badano liczebność bakterii heterotroficznych, bakterii przetrwalnikujących tlenowych, promieniowców oraz grzybów nitkowatych i drożdżoidalnych w glebach łąkowych nienawadnianych i nienawożonych (kontrolnych), w glebach nawadnianych odpływami z mechaniczno-biologicznej oczyszczalni oraz w glebach nawadnianych tymi samymi odpływami retencjonowanymi w stawie biologicznym oraz nawadnianych czystą wodą bez lub z nawożeniem mineralnym NPK. Nie stwierdzono większych różnic w liczebności badanych grup drobnoustrojów w glebach 8 różnych wariantów nawodnieniowo-nawożeniowych. W glebach nienawadnianych i nienawożonych (kontrolnych) oraz w glebach nawadnianych odpływami ściekowymi retencjonowanymi w stawie biologicznym maksymalne liczebności badanych grup drobnoustrojów występowały w warstwie z głębokości 0-10 cm. W głębszych warstwach gleby (15-25 cm i 30-50 cm) ich liczba się zmniejszała. W powierzchniowej warstwie gleby (z głębokości 0-10 cm) maksymalne liczebności bakterii heterotroficznych stwierdzano w październiku 1997 r., promieniowce i grzyby w lipcu 1996 i/lub 1997 r.

EN

Numbers of heterotrophic bacteria, aerobic spore-forming bacteria, actinomycetes and fungi (filamentous and yeasts) were studied in meadow soils non irrigated; irrigated with: sewage effluent; sewage effluent after retention in biological pond at three various volumes; pure water with or without mineral fertilizers and fertilized only with mineral NPK. The studies were carried out in 1996 and 1997. No big differences in the numbers of investigated microorganism groups in soil of all 8 experimental variants were stated. Maximal numbers of all microorganism groups in 0-10 cm layer of soil not irrigated and not fertilized (control) as well as in the soil irrigated with sewage effluent after retention in biological pond. In deeper soil layers (15-25 cm and 30-50 cm) their numbers generally decreased. Numbers of all microorganism groups varied within the investigation period.

13

Ocena stopnia zanieczyszczenia i stanu sanitarno-bakteriologicznego jeziora Hańcza

63%

Niewolak S. , Gotkowska-Płachta A.

Inżynieria i Ochrona Środowiska

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1999

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tom T. 2, nr 3/4

265-278

PL

Przedstawiono wyniki badań liczebności bakterii wskaźnikowych stopnia zanieczyszczenia (ogólna liczba bakterii na agarze bulionowym w temperaturze 20 i 37°C) i stanu sanitarnego (ogólna liczba bakterii z grupy pałeczki okrężnicy, liczba bakterii kałowych z grupy pałeczki okrężnicy i liczba paciorkowców kałowych) oraz oceny przydatności do kąpieli wód jeziora Hańcza, jego dopływów i odpływu. Badania prowadzono od maja do października 1997 r. na 3 stanowiskach usytuowanych w pelagialu, 2 stanowiskach usytuowanych na dopływach i jednym na odpływie z jeziora Hańcza. W wodzie pelagialu i w wodach przybrzeżnych jeziora Hańcza liczby badanych bakterii wskaźnikowych były najczęściej typowe dla czystych wód powierzchniowych (I klasy czystości). W wodzie cieków dopływających do jeziora Hańcza zależnie od daty poboru prób liczby badanych bakterii wskaźnikowych odpowiadały wartościom typowym dla wód czystych (I klasy czystości), nieznacznie zanieczyszczonych (H klasy czystości) i wyraźnie zanieczyszczonych (III klasy czystości). W wodzie odpływającej z jeziora Hańcza liczby badanych bakterii wskaźnikowych były zbliżone do stwierdzanych w wodzie pelagialu tego zbiornika.

EN

The paper presents the results of studies on the degree of pollution and the sanitary-bacteriological state of pelagic and near-shore waters of Lake Hańcza and their tributaries in Suwałki Lake District, Poland 1997. Five sampling stations were selected in the most characteristic points of the lake, four in inflowing rivers ' and streams, and one in river Czarna Hańcza outflowing from Lake Hańcza. Total viable count at 20°C and total viable count at 37°C were used as indicators of pollution, while total coliforms, fecal coliforms and fecal streptococci were served as indicators of the sanitary state. Pelagic and near-shore waters of Lake Hańcza were classified (with some exceptions) as clean, whereas waters of tributaries as clean slightly and sometimes moderately polluted. Only single samples collected from these stations showed noticeable pollution.

14

Ability of bacteriological self-purification of common carp, tench and crucian carp fingerlings reared in pond receiving the discharge from sewage treatment plant and then kept in running river water of different quality

63%

Niewolak S. , Tucholski S.

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tom 08

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nr 1

49-61

15

Ocena sanitarno-epidemiologiczna oligotroficznego jeziora Wukśniki

63%

Niewolak S. , Kaczor E.

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tom 16

16

Reduction of bacterial contamination of common carp under various rearing conditions

63%

Niewolak S. , Tucholski S.

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tom 08

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nr 1

63-74

17

Effect of some herbicides on the survival of bacteria indicating sanitary conditions and of enteropathogens in lake water. II. The influence of Aresin

63%

Niewolak S. , Komar M.

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tom 09

18

Physico-chemical parameters and heterotrophic microorganisms of underground waters of Omulewskie Reservoir aquifers in the Mazurian Lake District

63%

Kochanska E. , Niewolak S.

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nr 1

EN

This work presents the results of research on physico-chemical and microbiological amounts of heterotrophic bacteria, Actinomycetes, filamentous and yeast fungi in underground waters of aquifers of Omulewskie Reservoir in the Mazurian Lake District in 1989-1992/1993. The examination included water from 11 wells (20-64 m) and 3 piezometric bore-holes (6.5-23.5 m) on woodland (control well), managed by individual farmers and on large farms. Colour of water, pH, dry mass, and total hardness of the examined water samples did not exceed the values accepted for natural hydrochemical background. Electrolytic conductivity rarely exceeded 400 μS/cm. The concentration of the main cations and anions classifies the waters of the examined wells into four types: 1. carbonate-calcium-magnesium; 2. carbonate-calcium; 3. carbonate-chloride-calcium and 4. carbonate-calcium-sulphate. The concentration of oxygen was the lowest in the water from wells situated on large farms, the highest on the area of woodland; on the contrary BOD5. Oxidability only in the water of the wells on the woodland area was the same as the values accepted for the natural hydrochemical background. The amount of total nitrogen was the lowest in the water from the wells situated on large farms and it was correlated with respectively low or high amounts of total phosphorus. The amount of iron reached higher values only in the water of some wells on the area of large farms. Heterotrophic bacteria with higher optimal temperatures and oligotrophic bacteria were the most numerous among heterotrophic microorganisms. Actinomycetes and filamentous fungi were rare and in minimal quantities. There were more yeast fungi, especially those which did not produce carotenoid dyes.

19

Potentially pathogenic microorganisms in water and bottom sediments in the Czarna Hancza River

63%

Niewolak S. , Opieka A.

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nr 3

EN

This work comprises the results of a number of Pseudomonas aeruginosa, Aeromonas hydrophila and Staphylococcus sp. in water and bottom sediments in the Czarna Hancza River in the region of Suwalki and Wigry National Park from spring to autumn in 1996. All these microorganisms were found in smaller quantities in water, and in larger quantities in the bottom sediments in the Czarna Hancza River. Their number was generally higher than the number of faecal bacteria of Escherichia coli group both in water and bottom sediments in this river at site 1 (in Stary Brod above Suwatki) and at sites 7-10 (in Czerwony Folwark, Mackowa Ruda, Buda Ruska, Wysoki Most, to the east of Wigry Lake). Their number was close to or lower than the number of faecal bacteria of Escherichia coli group at the sites situated above and below the inflow of treated sewage from the Treatment Sewage Plant in Suwalki (2a and 2b sites), in Sobolewo (3 and 4 sites), in the region of the old river-bed of the Czarna Hancza River (5 site) and its mouth to Wigry Lake (6 site). There were fewer at the sites of sand deposits, more at the sites of clay-argillaceous deposits. In the research period they were more numerous in the second half of summer. The number of Pseudomonas aeruginosa, Aeromonas hydrophila and Staphylococcus sp. should be taken into account as well as the number of the indicators bacteria of a sanitary state (total coliforms, faecal coliforms and faecal streptococci) while estimating the usefulness of water in the Czarna Hancza River for recreation.

20

Sanitary-bacteriological and parasitological estimation of sewage sludges from chosen sewage treatment plants on the Mazurian Lake District and their utilization in agriculture

63%

Niewolak S. , Szelagiewicz M.

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nr 3

EN

This work comprises the results of investigations on the amount of heterotrophic bacteria (mesophilic), bacteria showing the sanitary state (TC,FC,FS), anaerobic spore - forming bacteria (Clostridiumperfringens), pathogenic/ potentially pathogenic bacteria (Staphylococcus aureus, Pseudomonas aeruginosa, Salmonella spp.), filamentous fungi and yeasts and parasitic worms in sewage sludge at sewage treatment plants in Olsztyn, Olsztynek and Kętrzyn in the Mazurian Lake District. The number of FC, Clostridium perfringens and Salmonella as well as parasitic worms in the soils fertilized by 6.7 and 13.4 t/ha dry wt. of sewage sludge from deposit fields at sewage treatment plant in Olsztyn was also determined. The lowest degree of bacteriological contamination was found in sewage sludge from the sediment fields at the sewage treatment plant in Olsztyn, whereas the highest degree was found in sewage sludge from lagoons at thesewage treatment plant in Kętrzyn. The soils fertilized by sewage sludges from sediment fields at the sewage -treatment plant in Olsztyn contained 100 -100,000 times fewer FC and Clostridium perfringens and parasite worms than sewage sludge. There was a lack of pathogenic bacteria from group of Salmonella. The numbers of FC and Clostridium perfringens and parasitic worms in soils depended on the amount of sewage used in fertilization.This suggests preliminary hygienization of sewage sludges before they are used in agriculture.