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Residues of nitrites and nitrates in selected meat products examined in Poland within the framework of sanitary-hygiene supervision in 1996

100%

Michalski M. M.

Bulletin of the Veterinary Institute in Puławy

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1997

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tom 41

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nr 2

Nitrite and nitrate residues measured in veterinary laboratories and in the Department of Hygiene of Food of Animal Origin, National Veterinary Research Institute are summarised. Measurements were done according to Polish Standards. Mean nitrate and nitrite concentrations (13380 samples) ranged from 15.0 ± 10.6 to 49.9 ± 71.0 μg/kg, and from 15.5 ± 15.5 to 64.1 ± 38.7 μg/kg, respectively. The residue limit (125 mg/kg) was exceeded in 3.3% of examined samples.

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ST36 electroacupuncture activates nNOS, iNOS and ATP-sensitive potassium channels to promote orofacial antinociception in rats

84%

Almeida R. T., Galdino G., Perez A. C., Silva G., Romero T. R., Duarte I. D.

Journal of Physiology and Pharmacology

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2017

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tom 68

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nr 1

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Occurrence of nitrogen cycle bacteria in the Biebrza River

84%

Frak M., Kardel I., Jankiewicz U.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2012

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tom 44

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nr 1

This paper of the selected groups of nitrogen cycle bacteria in the Biebrza River was analysed. In the water samples the quantity of ammonifying bacteria, nitrifying bacteria, proteolitic bacteria was estimated and also selected water quality indicators were analysed. Large quantities of proteolitic bacteria and ammonifying bacteria were found while the quantity of nitrifying bacteria was very small. Water quality analyses proved high TOC concentrations and low nitrate as well as nitrite concentrations. It was found, that the mineral forms of nitrogen being the intensive product of organic matter degradation is not released (low concentrations of ammonia), but it is accumulated in microorganisms cells. Low concentrations of ammonia are limiting for the number of nitrifying bacteria. The seasonal character of the occurrence of all analysed bacteria groups was as well found. The analytical procedure used was adjusted for bacteriological research on rivers of low anthropopressure.

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Uranium exposure induced reactive oxygen species and nitric oxide generation in Arabidopsis thaliana

67%

Tewari R., Horemans N., Nauts R., Wannijn J., Plevoets J., Van Hees M., Vandenhove H.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 2

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Determination of ammonia, nitrate and nitrite concentrations in marine water samples with cultured marine ornamental fish water sample analysis

67%

Manikandarajan T., Ramamoorthy K., Shanmugasundaram S., Eswar A., Kathirvel K., Sankar G.

International Letters of Natural Sciences

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2015

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tom 42

The present studies were concentration of ammonia, nitrite, nitrate, dissolved oxygen, temperature, salinity and pH. For seven physicochemical parameters were determined in marine water samples along with marine ornamental fish water sources from CAS in marine biology laboratory conditions at Parangipettai. Water sample have been studied at a marine water sources. The study concentrations of parameters like ammonia, nitrite, nitrate, dissolved oxygen, temperature, salinity, and pH. And physicochemical parameters have been calculated. The data showed the difference of the investigated parameters in samples as follows; Concentration of water quality parameters like ammonia was maximum level above 1.158 μmol¯1, nitrite was ranging from 0.811 to 0.922 μmol¯1, nitrate was range maximum level above 4.84 μmol¯1, dissolved oxygen content was maximum level above 2.4 mg¯1, temperature was ranging from 32.3 to 100 °C, salinity values ranging from 0 to 36ppt and pH was ranging from 6.5 to 8.0. During the study period of from July 2013 to June 2014 we investigated concentration of seven physicochemical parameters value Marine water samples with cultured fish species in presence of water from CAS in Marine Biology laboratory Annamalai University at Parangipettai.

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Nitrification activity of autotrophically and mixotrophically grown nitrobacteria in batch cultures

67%

Blaszczyk M., Spytkowska A.

Acta Microbiologica Polonica

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1995

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tom 44

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nr 1

7

Denitrification of nitrate by Pseudomonas stutzeri

67%

Blaszczyk M.

Acta Microbiologica Polonica

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1995

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tom 44

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nr 2

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Stężenie niektórych składników biogennych w wodzie potoku Pychowickiego

51%

Rajda W., Kanownik W., Goryl E.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2008

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tom 528

W wodzie potoku Pychowickiego o powierzchni zlewni 5,44 km², w górnej i dolnej części zagospodarowanej osadniczo, a w części środkowej nieużytkowanej, podmokłej i porośniętej bujną roślinnością i częściowo zajętej pod ekstensywne użytki zielone, oznaczono standardowymi metodami, w pięciu punktach pomiarowo-kontrolnych i pięciu terminach, stężenia NH₄⁺ , NO₃₋, NO₂₋i PO₄³⁻ . Dokonano oceny zagrożenia eutrofizacją wody zbiornika przeciwpowodziowego, projektowanego na terenie zlewni w ramach programu małej retencji. W wyniku badań nie stwierdzono wyraźnego związku pomiędzy stężeniem badanych składników a losowo wybranymi terminami oznaczeń. Natomiast wyraźne różnice stężeń odnotowano pomiędzy punktami kontrolnymi, gdzie na stan czystości wody oddziaływały antropogeniczne czynniki otoczenia. Na terenach osadniczych i bezpośrednio poniżej woda potoku kwalifikowała się do V i IV klasy czystości, a po przepłynięciu przez ekstensywnie wykorzystywaną i częściowo nieużytkowaną część doliny, wskaźniki te kwalifikowały wodę do klasy II. Stwierdzona poprawa była skutkiem bioakumulacji rozpuszczonych składników biogennych. W dolnej, zabudowanej domami jednorodzinnymi, części zlewni ponownie wystąpiło obniżenie czystości wody do klasy III. Wyniki badań mogą być przydatne przy wyborze lokalizacji zbiornika oraz w decyzjach dotyczących zagospodarowania jego zlewni.

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Histopathological changes in juvenile carp Cyprinus carpio L. continuously exposed to high nitrite levels from hatching

51%

Korwin-Kossakowski M., Ostaszewska T.

Archives of Polish Fisheries

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2003

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tom 11

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nr 1

Carp were cultivated (from day 3 to 30 after hatching) in water with a nitrite concentration of 7 mg NO₂-N dm³. The results of histological studies confirmed pathological changes in the throat, gills, heart, blood, swim bladder, liver and kidneys. These changes mainly had an adverse impact on respiration and growth. The total length and weight of fish from water with nitrites was lower by 30 and 75%, respectively, and their survival rate was 62% (97% in the control group).

Ograniczanie wyników

Residues of nitrites and nitrates in selected meat products examined in Poland within the framework of sanitary-hygiene supervision in 1996

ST36 electroacupuncture activates nNOS, iNOS and ATP-sensitive potassium channels to promote orofacial antinociception in rats

Occurrence of nitrogen cycle bacteria in the Biebrza River

Uranium exposure induced reactive oxygen species and nitric oxide generation in Arabidopsis thaliana

Determination of ammonia, nitrate and nitrite concentrations in marine water samples with cultured marine ornamental fish water sample analysis

Nitrification activity of autotrophically and mixotrophically grown nitrobacteria in batch cultures

Denitrification of nitrate by Pseudomonas stutzeri

Stężenie niektórych składników biogennych w wodzie potoku Pychowickiego

Histopathological changes in juvenile carp Cyprinus carpio L. continuously exposed to high nitrite levels from hatching