Wyniki wyszukiwania - Biblioteka Nauki

1

A survey on nitrogen and phosphor compound variation processes in wastewater stabilization ponds

100%

Pirsaheb M. , Fazlzadehdavil M. , Hazrati S. , Sharafi K. , Khodadadi T. , Safari Y.

Polish Journal of Environmental Studies

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2014

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tom 23

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nr 3

EN

Being economical has increased utilization of stabilization ponds to remove different contaminants from wastewater in proper weather conditions. Our current study investigates variations of nitrogen and phosphorous compound concentrations in effluent of wastewater stabilization ponds. 60 samples were taken from raw wastewater, anaerobic pond (AP) effluent, primary and secondary facultative ponds (PFP and SFP), and effluent of final ponds in weekly intervals for 3 months. Samples were examined based on standard methods (20th edition) for the examination of water and wastewater. Nitrogen kjeldahl removal output due to the AP, PFP, SFP, and the whole system were 20.6±4.9, 6.6±3.4, 13.4±9.5, and 47.7±9.1%, respectively. Nitrite removal output due to the PFP, SFP, and the whole system were 30.1±8.8, 36.3±9.8, and 58.8±5.2%, respectively. Respective values for phosphor removal output in AP and SFP, and the whole system were 21.8±10.3%, 13.3±10.1%, and 20.9±17.1%. However, nitrite concentrations in all samples from AP effluent and phosphor levels in all samples from PFP effluent increased compared with those of influent. The results showed that AP plays an important role in removal of organic nitrogen and phosphorous compounds. While the whole system output in nitrogen compound removal was 58.8±5.2%, phosphor removal output showed low efficiency (20.9±17.1%). Increasing the number of complete ponds is suggested for increasing phosphor removal efficiency.

2

Changes in the quality of the water of Lake Wicko Male [Szczecin Lagoon] over the years 1991-1997

100%

Poleszczuk G. , Sitek S.

Bulletin of the Sea Fisheries Institute

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1997

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nr 3

3

The runoff of nitrogen and phosphorus compounds from selected agricultural regions in the Vistula and Odra drainage basins

86%

Taylor R.

Oceanologia

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1984

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tom 18

4

The algae of a reservoir of nitrogen wastewaters

86%

Rzeczycka M. , Bonkowska E. , Przytocka-Jusiak M.

Acta Hydrobiologica

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1987

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tom 29

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nr 1

5

Bacterial cellulose synthesis by Kombucha microorganisms on a medium with a variable composition of nutrients

86%

Betlej I. , Krajewski K.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2019

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tom 108

6

The activity of selected lysosomal hydrolases in the mouse liver after paclitaxel and morphine administration

86%

Krol T. , Wieczorek A. , Lysek-Gladysinska M.

Cellular and Molecular Biology Letters

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2002

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tom 07

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nr Suppl.

7

Effect of Alar on nitrogen compounds content in apple trees

72%

Ciesielska-Piper J. , Sadowski A.

Fruit Science Reports

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1987

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tom 14

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nr 3

8

Influence of pollution sources of points and areals differentiation of the concentration of phosphorus and nitrogen compounds in water of Mały Jeziorak Lake

72%

Domska D. , Wojtkowiak K.

Polish Journal of Natural Sciences

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2010

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tom 25

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nr 3

EN

There were showed influence of the points (local and city reception basin outflow) and the areas (recreation area and wasteland) differentiation of pollution sources on the concentration of nitrogen and phosphorus compounds in water of Mały Jeziorak Lake. There were analyzed NO₃⁻, NO₂⁻, NH₄⁺, total P and PO₄⁻³ content. Results of the studies were indicated that the most components concentration was low in I class of water cleanliness. There was more ammonium and nitrate nitrogen content near the recreation area and more nitrate nitrogen content in spring and summer time near the dairy outflow. Moreover, higher total phosphorus content but not more than in I class of water cleanliness norm were in the lake water with village rain outflow and near the recreation area and, phosphates content in II class water cleanliness in spring time near the recreation area.

PL

W pracy określono wpływ zróżnicowania źródeł zanieczyszczeń punktowych (odpływ wód burzowych i ścieków z mleczarni) oraz obszarowych (teren rekreacyjny i nieużytek) na zawartość związków azotu i fosforu w wodzie części misy jeziora Mały Jeziorak. W metodyce badań uwzględniono analizę zawartości NO₃⁻, NO₂⁻, NH₄⁺, P ogółem i PO₄⁻³. Na podstawie uzyskanych wyników wykazano bezpośredni, a także zróżnicowany, wpływ punktowych źródeł zanieczyszczeń oraz obszaru przylegającego do linii brzegowej jeziora Jeziorak Mały oraz okresu wegetacyjnego na zawartość mineralnych związków azotu i fosforu, a tym samym na jakość wody badanej tafli jeziora. Stwierdzono, że zawartość większości badanych związków była przeważnie niska i mieściła się w klasie I czystości wód. W wodzie jeziora przylegającego do terenu rekreacyjnego było więcej azotu amonowego i azotanowego, a w miejscu odpływu ścieków z mleczarni w okresie wiosenno-letnim – więcej azotu azotanowego. Większą zawartość fosforu ogółem, nieprzekraczającą jednak norm I klasy czystości wód, zaobserwowano ponadto w wodzie jeziora, do której spływały osiedlowe wody burzowe i przy granicy z terenem rekreacyjnym, a fosforanów (w granicach normy II klasy czystości wód) – wiosną w okolicy terenu rekreacyjnego.

9

The effect of microwave radiation on the changes of nitrogen compounds in a reactor with a biofilm

72%

Zielinski M. , Krzemieniewski M.

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2007

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tom 10

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nr 2

10

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

72%

Brzozowska R. , Gawronska H.

|

tom 38

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nr 1

113-119

11

Dynamika zawartosci zwiazkow azotu w wodach jeziora Olecko Wielkie

72%

Wojtas A. , Dabek M.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2006

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tom 513

547-553

PL

Badania przeprowadzone w latach 1990-2000 obejmowały wybrane cechy jakościowe wód kąpielisk (Zespołu Szkół Technicznych, Dzikiej Plaży, Szyjki, Skoczni) jeziora Olecko Wielkie. Średnie stężenie amoniaku i azotu azotynowego w badanych latach malało zarówno wiosną, jak i latem. Natomiast azotu azotanowego malało tylko wiosną, a w czasie lata miało tendencję wzrostową. W okresie wiosennym średnie zawartości amoniaku, azotu azotanowego i tlenu rozpuszczonego były w porównaniu do okresu letniego wyższe. Natomiast azot azotynowy występował w nieznacznie wyższych stężeniach latem. Współczynniki korelacji prostej między zawartością tlenu rozpuszczonego a zawartością azotu amonowego wahały się od 0,32 do -0,62, azotu azotanowego od 0,25 do -0,54, azotu azotynowego od -0,07 do -0,71.

EN

The research done in the years 1990-2000 concerned the chosen qualities of bathing beaches (Zespół Szkół Technicznych, Dzika Plaża, Szyjka, Skocznia) in Olecko Wielkie lake. The average concentration of ammonia and nitrities decreased both in spring and summer whereas the concentration of nitrate decreased only in spring. In summer the concentration of nitrate showed an increasing tendency. Comparing to summer the average concentration of ammonia, nitrate and dissolved oxygen was higher in spring. However, the concentration of nitrities was slightly higher in summer. The coefficients of straight correlation between the concentration of dissolved oxygen and ammonia fluctuated from 0.32 to -0.62; between oxygen and nitrate from 0.25 to -0.54; and between oxygen and nitrities from -0.07 to -0.71.

12

Evaluation of natural minerals (zeolite and bentonite) for nitrogen compounds adsorption in different water temperatures suitable for aquaculture

72%

Sahin D. , Oz M. , Sertasi E. , Oz U. , Karsli Z. , Aral O.

International Letters of Natural Sciences

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2018

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tom 71

EN

In this study, it was aimed to determine the effects of zeolite and bentonite on the ammonium adsorption at different temperatures. In this research three trial groups with 3 repetitions were created for three different water temperatures (18±0.1°C, 24±0.0°C, 27±0.0°C). Experimental groups were prepared by adding NH4 + amount of 10.5 mg/l in 2 liters of water. After that, zeolite, zeolite+bentonite and bentonite were added into the bottles as 10 gram per liter. Water temperature, pH and TAN (Total Ammonium Nitrogen) values were determined during the trial period. At the end of trial TAN values at 27 °C were recorded as 10.103±0.11 mg/l, 9.227±0.13 mg/l and 7.933±0.17 mg/l in zeolite, zeolite+bentonite and bentonite groups, respectively. At the end of trial TAN values at 24 °C were recorded as 10.027±0.17 mg/l, 9.282±0.15 mg/l and 8.336±0.15 mg/l in zeolite, zeolite+bentonite and bentonite groups, respectively. At the end of trial TAN values at 18 °C were recorded as 9.012±0.28 mg/l, 7.702±0.14 mg/l and 6.594±0.14 mg/l in zeolite, zeolite+bentonite and bentonite groups, respectively. Maximum ammonium removal capacity, qe, was found to be 0.50 mg/g in the bentonite (18 °C). The TAN values determined at 18 °C were statistically more significant (p<0.05) than the TAN values obtained at 24 °C and 27 °C.

13

Effect of cultivar and harvest date of kale [Brassica oleracea L. var. acephala] on content of nitrogen compounds

72%

Korus A. , Lisiewska Z.

Polish Journal of Environmental Studies

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2009

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tom 18

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nr 2

235-241

EN

The level of total nitrogen, protein nitrogen, nitrates (NO₃⁻) and nitrites (NO₂⁻) was measured in the leaves of kale of the cultivars Winterbor F₁, Redbor F₁ and Średnio Wysoki Zielony Kędzierzawy. The investigation was carried out in two successive years, the raw material being harvested three times each year, i.e. 10, 14 and 18 weeks after planting seedlings in the field. Depending on the year of the investigation, the cultivar and the date of harvest, the content found in 100 g fresh matter of kale was: 0.54-0.74 g total nitrogen and 0.46-0.50 g protein nitrogen; in 1000 g the content of nitrates (NO₃⁻) was 248-2810 mg and of nitrites (NO₂⁻) 0.14-0.95 mg. In both years the highest content of total nitrogen was found in leaves of Średnio Wysoki Zielony Kędzierzawy and of protein nitrogen in Winterbor F₁. The cultivar Redbor F₁ was characterized by the highest content of nitrates and nitrites. Comparing material from the three harvest dates, average values for the year and cultivar showed that the second harvest contained 9% more total nitrogen and 4% more protein nitrogen than the first, while the third harvest contained, respectively, 17% and 8% more than the first. Nitrate content fell by 67% and 83%, respectively, and nitrite increased by 5% (but later was reduced by 46%). Nitrate and nitrite are regulated in spinach and lettuce and for this reason understanding the accumulation of these compounds is critical if regulations are developed for kale.

14

Effect of different sucrose and nitrogen levels in the medium on chlorophyll and anthocyanin content in Clematis pitcheri shoots cultured in vitro at different temperatures

72%

Kawa-Miszczak L. , Wegrzynowicz-Lesiak E. , Gabryszewska E. , Saniewski M.

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tom 17

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nr 1

113-121

EN

The aim of the work presented was to determine the chlorophyll and anthocyanin accumulation in Clematis pitcheri shoots cultured in vitro at different temperatures on the medium with various sucrose and nitrogen level. Two concentrations of sucrose: 10 g-l-1 and 30 gT1, and two levels of nitrogen compounds: 100% and 50% of standard MS strength, were used. Shoots were cultured at 15°C, 20°C and 25°C. It was found that plantlets of C. pitcheri grown at 20°C contained the highest and at 15°C the lowest content of chlorophyll. The sucrose concentration in the medium had no or only a slight effect. Lower level of nitrogen compounds (50% N) stimulated accumulation of chlorophyll in shoots as compared to a normal strength (100% N), with the highest differences at 15°C. High sucrose (30 g-l-1) and nitrogen (100% N) concentrations and low temperature (15°C) significantly promoted anthocyanins accumulation. Reduction of nitrogen compounds level in the medium to 50% and lowering sucrose concentration to 10 gT1 leads to decrease of anthocyanins accumulation in the shoots cultured at 15°C and 20°C. In the case of explants cultured at 25°C, the sucrose and nitrogen concentration in the medium had no or only a slight effect on accumulation of anthocyanins in the shoots.

PL

Celem pracy było oznaczenie zawartości chlorofilu i antocyjanów w pędach Clematis pitcheri rosnących in vitro w zależności od temperatury oraz poziomu sacharozy i azotu w pożywce. Zastosowano dwa stężenia sacharozy- 10 gl-1 i 30 gl-1 oraz dwa poziomy związków azotowych - 100% i 50% standardowego składu pożywki MS. Kultury prowadzono w 15°C, 20°C i 25°C. Stwierdzono, że zawartość chlorofilu była najwyższa w pędach rosnących w 20°C, a najniższa w 15°C. Stężenie sacharozy w pożywce miało niewielki wpływ na zawartość chlorofilu w pędach. Natomiast obniżenie poziomu związków azotowych (50% N) stymulowało akumulację chlorofilu w pędach w porównaniu z normalnym poziomem soli azotowych (100% N), a największe różnice byfy w pędach rosnących w 15°C. Wyższe stężenie sacharozy (30 gT1) i azotu (100% N) w pożywce oraz niska temperatura (15°C) zwiększafy akumulację antocyjanów. Zmniejszenie poziomu zwi ązków azotowych do 50% standardowego składu pożywki MS oraz niskie stężenie sacharozy (10 gT1) prowadziło do obniżenia zawartości antocyjanów w pędach rosnących w 15°C i 20°C. W przypadku eksplantatów rosnących w 25°C, stężenie sacharozy i azotu w pożywce nie wpływało lub miało niewielki wpływ na akumulacj ę antocyjanów w pędach.

15

The assessment of influence of different nitrogen compounds and time on germination of Lupinus angustifolius seeds and chemical composition of final products

72%

Kasprowicz-Potocka M. , Walachowska E. , Zaworska A. , Frankiewicz A.

Acta Societatis Botanicorum Poloniae

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2013

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tom 82

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nr 3

EN

The aim of the research was to determine changes in the chemical composition in lupin seeds during seed germination in a solution containing selected nitrogen compounds. Blue lupin seeds of the Neptun cultivar were germinated for 3 or 4 days in darkness, at 24°C in 1% solutions containing the following nitrogen compounds: urea, nitric acid, ammonium sulphate, methionine or yeast extract. The control consisted of seeds germinated in water. The presence of all nitrogen sources has resulted in a poorer growth of the sprouts as compared to seeds germinated in water. There was a significant increase in the true protein content as well as a significant decrease in the content of crude ash and alkaloids in the germinated seeds. The seeds germinated for 4 days had significantly higher total protein content and significantly lower content of nitrogen-free extract compounds and oligosaccharides as compared to the seeds germinated for 3 days. A significant influence of the nitrogen source on the concentration of some amino acids was found. Cystine was found to be absent in seeds germinated in the nitric acid solution, while there occurred a twofold increase in the cystine content and a fivefold increase in the methionine content in seeds germinated in the aqueous solution of methionine and an 50% increase in the cystine concentration was observed in seeds germinated in the yeast extract and ammonium sulphate solution. Methionine and cystine were the limiting amino acids in all the samples, accept of seeds germinated in the methionine solution were it was valine. Aqueous solutions of ammonium sulphate and yeast extract were found to have the most advantageous influence on the chemical composition of lupin germination products.

16

Wpływ nawożenia fosforowego na plon i zawartość związków azotowych w burakach cukrowych w wysiewach polowych

72%

Siegenthaler A.

Gazeta Cukrownicza

|

1988

|

tom 96

|

nr 02

17

The influence of the organic matter of sewage sediments on biological activity of microorganisms which carry out the transformations of carbon and nitrogen compounds

72%

Pisarek I. , Grata K.

Polish Journal of Microbiology

|

2013

|

tom 62

|

nr 4

EN

Soil microorganisms play an important role in the organic matter transformation process. The soil microorganisms also are in symbiotic relationship with plants. At the same time, soil microorganisms are sensitive to both anthropogenic and natural habitat changes. Particular characteristics of organic matter (the C:N relation, pH, the content the content of assimilated nutrients, the xenobiotics etc.) modify the biotic conditions of the soils. This particularly concerns the microorganisms which carry out the changes in the mineral and organic nitrogen compounds and the transformation of the external organic matter. The first aim of this work was to assess the influence of the sewage sediments and the manure on the phytosanitary potential of the soil environment. The second aim of this article was to estimate the number and activity of microorganisms which carry out the transformation of carbon and nitrogen compounds. This work showed the stimulating effect of the external organic matter both on the number and on the activity of most of the physiological groups. The manure mainly stimulated ammonificators, amylolitic microorganisms and Azotobacter sp. The sewage sediments mainly stimulated ammonificators, nitrifiers of I phase and cellulolytic microorganisms. The statistically significant impact of the physio-chemical soil habitat on the biological activity of the analyzed groups of microbes was also noted.

18

Dyrektywa Azotanowa w praktyce rolniczej

72%

Szutowska G.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

|

2004

|

nr 10

13-14

19

Ethanol-induced changes in proteins and some mineral compounds of milk

72%

Czerniewicz M. , Kruk A. , Kielczewska K.

Polish Journal of Food and Nutrition Sciences

|

1999

|

tom 08

|

nr 4

EN

The ethanol-influenced changes in proteins and some mineral compounds of milk were examined. Despite apparent phasing (induction and post-induction phases), the ethanol coagulation of milk was found to be a continuous process, lasting until 75% of proteins was coagulated and about 20% of proteins was changed into proteozo-peptone and non-protein nitrogen. It was shown that as2-casein and ß-lactoglobulin were more resistant to alcohol than heating. The solubility of mineral compounds of milk was found to decrease upon the alcohol addition and the Ca/P weight ratio was indicative of variability in the form of salts being precipitated.

PL

Przeprowadzone badania wykazały, że koagulacja etanolowa mleka, pomimo pozornej etapowości agregacji białek, jest procesem ciągłym i przebiega aż do skoagulowania 75 % białek i przemiany około 20 % białek w związki PPN+NPN (rys. 1). W fazie indukcyjnej, trwającej do około 27-procentowego stężenia alkoholu, następuje systematyczna redukcja otoczki hydratacyjnej micel, natomiast w okresie poindukcyjnym wzrost stopnia hydratacji jest rezultatem okludowania wolnej wody między zdenaturowanymi białkami (rys. 2). Pod koniec fazy indukcyjnej procesu koagulacji następuje na tyle daleko posunięta dehydratacja micel i przemiany w łańcuchach polipeptydowych białek, co przypuszczalnie umożliwia powstawanie, stwierdzonych w izoelektrycznym koagulacie, kompleksów pomiędzy kazeiną a zdenaturowaną laktoglobuliną lub też może mieć miejsce jednoczesne strącanie laktoglobuliny ß (tab.1). Laktoglobulina ß jest mniej wrażliwa na działanie alkoholu aniżeli system kazeinowy mleka (tab. 1), co jest w przeciwieństwie do destabilizacji tych białek wywoływanej ogrzewaniem. Frakcje kazeinowe wykazują zróżnicowaną wrażliwość na etanol (rys.3). Kazeinę ß odznacza względnie wysoka labilność, co jest w kontraście do jej dużej odporności na ogrzewanie, natomiast kazeina może spełniać, obok frakcji kazeiny к, rolę stabilizującą w micelarnym systemie podczas procesu koagulacji etanolowej. Dodatek etanolu powoduje zmniejszenie rozpuszczalności soli mleka (rys. 4). W początkowej fazie koagulacji następuje tworzenie fosforanu dwuwapniowego, podczas gdy wyższe stężenie alkoholu powodują powstawanie fosforanu trójwapniowego (tab. 2). Niniejsze badania wskazują na istotne różnice w mechanizmach destabilizacji składników mleka powodowanych przez działanie alkoholu i ogrzewania, sugerując ograniczoną możliwość stosowania testów alkoholowych do oceny stabilności cieplnej mleka.

20

Elimination of nitrogen compounds in carp ponds fertilized with the biologically treated municipal sewage

72%

Kolasa-Jaminska B. , Kuczynski M. , Lewkowicz S. , Pilarczyk M.

Acta Scientiarum Polonorum. Piscaria

|

2003

|

tom 02

|

nr 1