Wyniki wyszukiwania

1

Spectral data acquisition system [SDAS]

100%

Weselucha-Birczynska A., Birczynski B.

Current Topics in Biophysics

|

1992

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tom 16

|

nr 1

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

The effect of soil particles aggregation on ion adsorption

88%

Usiarow O. G., Stawinski J., Jozefaciuk G., Swieboda R.

International Agrophysics

|

1993

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tom 07

|

nr 4

3

Physicochemical analysis of phosphatidylcholine-ceramide system in bilayer lipid membranes

75%

Naumowicz M., Petelska A. D., Figaszewski Z. A.

Acta Biochimica Polonica

|

2008

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tom 55

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nr 4

721-730

Electrochemical impedance spectroscopy was used for the study of two-component lipid membranes. Phosphatidylcholine and ceramide were to be investigated, since they play an important biochemical role in cell membranes. The research on biolipid interaction was focused on quantitative description of processes that take part in a bilayer. Assumed models of interaction between amphiphilic molecules and the equilibria that take place there were described by mathematical equations for the studied system. The possibility of complex formation for two-component system forming bilayers was assumed that could explain the deviation from additivity rule. Equilibria were described by mathematical equations that were further verified experimentally. The determined values of parameters (stability constant, molecular area of complex, capacitance and conductance of the lipid membranes formed from molecules and complexes) were used for calculation of model curves. The comparison of model curves and experimental points verified the assumed model

4

Phytoplankton-based recovery requirement for urban lakes in the implementation of the Water Framework Directive’s ecological targets

75%

Napiorkowska-Krzebietke A., Dunalska J.

Oceanological and Hydrobiological Studies

|

2015

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tom 44

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nr 1

5

Physico-chemical properties of Rhododendron honey produced in Turkey

75%

Rasgele P. G., Kekecoglu M.

Herba Polonica

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2013

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tom 59

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nr 3

Rhododendron honey is a monofloral honey and it is collected from the flowers of Rhododendron species widely spreading over many countries, mainly in America, Turkey, Indonesia, Australia. It is belived that Rhododendron honey treats several disorders and is used traditionally as an alternative medicine. The determination of the chemical characteristics of the Rhododendron honey is essential for public health. In this research, the physicochemical characteristics of Rhododendron, chestnut and flower honey samples collected from beekeepers in Turkey were determined and compared. Physico-chemical parameters such as moisture, acidity, sucrose, invert sugar, fructose/glucose, conductivity, diastase and hydroxymethylfurfural were analysed in each honey sample. According to the results obtained, no differences were found in physico-chemical properties of Rhododendron, honey samples, except from moisture and acidity compared with those of chestnut and flower honeys. In order to differentiate Rhododendron honeys, new methods should be developed. This honey should be reintroduced to medicine and used in pharmaceutical industry.

6

Application of mineral water from geothermal source for fermentation of beetroot

63%

Wrzodak A., Szwejda-Grzybowska J.

Journal of Horticultural Research

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2020

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tom 28

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nr 1

7

Effects of a floodplain lake restoration on macroinvertebrate assemblages - a case study of the lowland river (the Slupia River , N Poland)

63%

Obolewski K., Glinska-Lewczuk K., Strzelczak A., Burandi P.

Polish Journal of Ecology

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2014

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tom 62

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nr 3

A study on the response of macroinvertebrate assemblages to the restoration of hydrological connectivity of an oxbow lake through the channel excavation is presented. The study included a five-year environmental monitoring (hydrological, hydro-chemical measurements and invertebrate sampling) carried out in the years 2008–2009 and 2011–2012 in the floodplain of the Słupia River (N Poland). The results allowed for assessing ecological effects of the hydrotechnical treatments (re-opening of an old river bed, declogging and installation of wooden deflectors) applied in the oxbow restoration. The results confirmed the preliminary hypothesis that the level of hydrological connectivity determines the dynamics of invertebrate fauna communities in river-floodplain systems. Analysis of the data revealed that such reconnection considerably influenced the structure of hydrobionts by altering abiotic habitat conditions. Effects of radical changes in the habitat morphology and hydrodynamic conditions and monitoring of macroinvertebrate assemblages preformed in the restored lake indicated a significant instability of the ecosystem soon after the treatment, what was confirmed by the results of canonical analysis, in which 50% of the total variance remained unexplained. Among factors analysed, water quality parameters explained 21.4% of the total variance in macroinvertebrate communities. However, the hydrobionts showed a significant instability with respect to variable hydrological conditions (flow through the lake) what contributed to a low share of water flow along the oxbow in explaining the total variance. The analysis of long-term changes that occurred in the studied ecosystem showed that the restoration of full hydrological connectivity brought only a short-term increase in benthofauna abundance. The most distinct reorganization in the structure of macroinvertebrate communities was observed in the first year after the reconnection while the consecutive four years brought only insignificant changes, mainly the appearance of a few species, mainly molluscs. Our investigation suggests that the taxonomic composition of macroinvertebrates in the studied oxbow lake having the only one-arm opening, before the improvement of hydrological connectivity, seemed to be more stable and optimal for this kind of habitat, than after the hydrotechnical works, when the ecosystem became passable due to both-arms connections to the river channel. Therefore, semi-lotic oxbows, connected to parent rivers only with one arm, can be properly functioning aquatic ecosystems in river floodplains.

8

Changes in stream water contamination in select Slovakian settlements

63%

Kasiarova S., Feszterova M.

Polish Journal of Environmental Studies

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2010

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tom 19

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nr 2

343-349

This article presents the results of concentrations of N-NO₂, N-NO₃, Cl⁻, SO₄²⁻, P-PO₄, N-NH₄, Fe, chemical oxygen demand with KMnO₄, HCO₃⁻, Ptotal, acid neutralizing capacity between the pH range of 4.5 and 3.5 along with pH and electrolytic conductivity for Štiavnica Stream (in south-central Slovakia). These parameters were monitored at four monitoring places (Banska Štiavnica, Svaty Anton, Prenčov, and Hontianske Nemce) from 2006 to 2008. The rank order of soluble nitrogen forms on the basis of median values were in Banska Štiavnica N-NH₄>N-NO₂>N-NO₃, in Svaty Anton, Prenčov and Hontianske Nemce N-NO₃>N-NH₄>N-NO₂. The concentration of phosphates phosphor was high in all sampling places, with the highest in Banska Štiavnica (0.29 mg・L⁻¹). Physico-chemical parameters such as pH were in the interval from 6.52 to 7.93, electrolytic conductivity and chemical oxygen demand were highest in Banska Štiavnica (EC = 51.51 mS・m⁻¹, CODMn = 10.46 mg・L⁻¹). The aim of our article is to prove, according to our analyses, that surface water quality has gotten worse and to point out the importance of monitoring smaller streams that are permanently contamined by local settlements.

9

Physico-chemical analysis of sugar factory effluent stress on seedling growth of black gram (Vigna mungo (L.) Hepper) varieties

63%

Elayaraj B.

International Letters of Natural Sciences

|

2014

|

tom 12

|

nr 1

The physico-chemical parameters of the content in the effluents from Rajasree sugar factory of Villupuram district have been explored and its impact on the germination and growth patterns of black gram varieties has been studied. Physico-chemical parameters included color, odour, pH, temperature, electrical conductivity, suspended solids, dissolved solids, BOD, COD, chloride, sulphate, calcium, oil and grease concentration. Germination studies was conducted with black gram seed varieties (ADT-3, ADT-5, Vamban-3, Vamban-5 and Co-6) treated with different concentrations (control, 5, 10, 25, 50, 75 and 100 % ) of sugar mill effluent. Germination studies parameters such as germination percentage, germination index, shoot length, root length, fresh and dry weight of seedlings were found to be increased up to 10 % concentration of effluent. Vigour index, tolerance index, percentage of phytotoxicity and germination index were also calculated. The above mentioned parameters were decreased with the increase of effluent concentrations (25-100 %).

10

The effect of long-term contamination by heavy metals on community and genome alterations of Chironomidae (Diptera) in a stream with mine drainage water (Southern Poland)

63%

Szarek-Gwiazda E., Michailova P., Ilkova J., Kownacki A., Ciszewski D., Aleksander-Kwaterczak U.

Oceanological and Hydrobiological Studies

|

2013

|

tom 42

|

nr 4

11

Biochemical and physico-chemical analysis of starch polysaccharides

63%

Huber A., Praznik W.

Polish Journal of Food and Nutrition Sciences

|

1993

|

tom 02

|

nr 2

12

Practical limits of some standard chemical analyses in pollution control

63%

Polakiewicz T.

Polish Journal of Environmental Studies

|

1992

|

tom 01

|

nr 1

On the basis of selected examples it is shown that chemical analyses performed according to the Polish Norms can produce incorrect results. The sources of errors were disclosed and some improvements suggested. The pH-measurements of acid rains and water samples with conductivity less than 25 μS/cm, the COD (dichromate) determination especially of saline wastes, the BOD determination by the dilution method, the BOD and COD as the indexes of organic matter content, and the TOC determination as a helpful index for troublesome samples were discussed.

13

Use of the Filter-Sandwich carriers in continuous effectiveness monitoring of slurry treatment methods as an element improving biosafety in agriculture

51%

Skowron K., Olszewska H., Paluszak P., Skowron K. J., Bauza-Kaszewska J.

Annals of Agricultural and Environmental Medicine

|

2013

|

tom 20

|

nr 2

Slurry, due to high microbiological contamination, requires hygienization before spreading. The agricultural usage of treated slurry has to guarantee biosafety. Therefore, constant monitoring of the slurry treatment process should be conducted. The use of Filter-Sandwich carriers seems to be a prospective solution. The aim of the research was to test whether Filter-Sandwich carriers influence the survivability of microorganisms during the slurry hygienization process and hence, whether they are safe for the environment. Raw cattle and swine slurry with different dry matter content was the research material. Salmonella Senftenberg W775 rods were introduced directly into the slurry and into the carriers placed in the liquid excrements stored at 4 and 20 °C, and underwent anaerobic digestion at 35 °C. The number of tested bacteria obtained from the slurry and carriers was determined using the MPN method with proper microbiological media. The values of physicochemical parameters of the raw and treated slurry were determined, both for the carriers and for slurry only. Biosafety control was also conducted for the carriers in slurry containers. The differences in the theoretical survivability between Salmonella Senftenberg W775 re-isolated from the slurry and the carriers, and in the values of the selected physicochemical parameters obtained at the end of the process, were not statistically significant. The re-contamination of the sterile slurry caused by the bacteria in the carrier was not observed after placement of the carrier with inoculated material. The conducted research proves the usefulness of Filter-Sandwich carriers for continuous hygienization monitoring of the slurry treatment process. This refers not only to the semi-technical scale, but also to the full-scale process.

14

Oznaczanie etylobicyklofosforanu w materiale biologicznym metoda chromatografii gazowej

51%

Kalski A., Smok W.

Bromatologia i Chemia Toksykologiczna

|

1992

|

tom 25

|

nr 1

69-71

A gas chromatographic procedure using methylbicyclophosphorothionate as an internal standard, for the determination of ethylbicyclophosphate in the brain, blood, and liver of small laboratory animals, was elaborated. The compound was extracted from the tissue with acetonitrile, and re-extracted from 2.5% sodium sulfate solution with chloroform. After evaporation of the solvent, the residue was dissolved in acetone. Chromatographic partition was carried out using a glass column (4 m x 0.4 cm) packed with 3% OV-17 on W/H.P. chromosorb at 250°C. Recovery of ethylbicyclophosphate ranged from 65% to 95%. Linear relationship of standard curve within the concentration range from 0.4 to 4.0 µg of ethylbicyclophosphate, was found. Precision for the assay of 2.0 µg samples, was 7.36%.

15

The elements of specific biological activity in therapeutic waters in Polish health resorts

51%

Drobnik M., Latour T., Sziwa D.

Journal of Elementology

|

2011

|

tom 16

|

nr 4

The study characterizes specific therapeutic waters in Polish health resorts, which contain iodide, fluoride, silicon, sulphides, iron(II), carbon dioxide and radon in concentrations that ensure the therapeutic status of water and specify how it can be used for medical treatment. Based on the physicochemical analysis, it has been verified that among 160 waters from 39 health resorts, 37 contain Fe(II) in concentrations > 10 mg dm–3, which means that they can be classified as ferruginous. Twelve waters containing fluoride in concentrations > 2 mg dm–3 were recognized as therapeutic fluoride waters. Five waters were classified as siliceous ones owing to the content of silicon compounds above 70 mg dm–3 (H2SiO3). Twenty-eight of the analysed waters contain sulphides (H2S+HS–) in concentrations > 1 mg dm–3 and 64 waters contain iodide in concentrations > 1 mg dm–3. Carbon dioxide, which occurs in 72 waters in concentrations above 1 g dm–3 (acidulous waters), proved to be the most widespread component. Waters which contain radon in an amount corresponding to the radiation of 74 Bq (2 nCi) in 1 dm3 are classified as radon waters. Ten of the analysed waters were found to contain this element. The waters were highly varied in chemical composition and type of specific components. Sulphurous waters are mainly used for mineral baths; ferruginous waters are drunk; fluoride and silicon-rich waters are taken for mineral baths and iodide waters are used for mineral baths and inhalations. Using these waters in balneotherapy is an important part of spa treatment and defines different healing profiles of Polish health resorts.

16

Zastosowanie deskryptorow strukturalnych w analizie parametrow fizykochemicznych [QSPR] wybranych substancji aktywnych srodkow ochrony roslin

51%

Miszczyk M., Pyka A.

Progress in Plant Protection

|

2006

|

tom 46

|

nr 2

746-749

17

Charakterystyka jakosci miodow wielokwiatowych z roznych regionow Polski

51%

Majewska E., Kowalska J., Jezewska A.

Bromatologia i Chemia Toksykologiczna

|

2010

|

tom 43

|

nr 3

391-397

18

I edycja ogolnopolskiego konkursu wyrobow spirytusowych: O Znak Najwyzszej Jakosci

51%

Stecka K. M.

Przemysł Fermentacyjny i Owocowo-Warzywny

|

2002

|

tom 46

|

nr 12

13

19

Jakosc oszczypkow z uwzglednieniem oceny mleka owczego i zetycy

51%

Paciorek A., Bonczar G.

Żywność Nauka Technologia Jakość

|

2001

|

tom 08

|

nr 1

103-116

Prześledzono proces produkcji oszczypków w trzech wybranych bacówkach. Dokonano analizy fizykochemicznej i mikrobiologicznej mleka owczego, oszczypków oraz serwatki, w ciągu sezonu doju owiec. Stwierdzono, że proces produkcji oszczypków był zbliżony w trzech bacówkach. Oszczypki różniły się pod względem badanych parametrów zarówno w zależności od miejsca, jak i czasu produkcji. Jakość mikrobiologiczna oszczypków nie była zadawalająca.

20

Quality of kefir produced using ActiveFlora probiotic

45%

Mituniewicz-Malek A., Dmytrow I., Jasinska M.

Electronic Journal of Polish Agricultural Universities. Series Food Science and Technology

|

2009

|

tom 12

|

nr 3

Ograniczanie wyników

Spectral data acquisition system [SDAS]

The effect of soil particles aggregation on ion adsorption

Physicochemical analysis of phosphatidylcholine-ceramide system in bilayer lipid membranes

Phytoplankton-based recovery requirement for urban lakes in the implementation of the Water Framework Directive’s ecological targets

Physico-chemical properties of Rhododendron honey produced in Turkey

Application of mineral water from geothermal source for fermentation of beetroot

Effects of a floodplain lake restoration on macroinvertebrate assemblages - a case study of the lowland river (the Slupia River , N Poland)

Changes in stream water contamination in select Slovakian settlements

Physico-chemical analysis of sugar factory effluent stress on seedling growth of black gram (Vigna mungo (L.) Hepper) varieties

The effect of long-term contamination by heavy metals on community and genome alterations of Chironomidae (Diptera) in a stream with mine drainage water (Southern Poland)

Biochemical and physico-chemical analysis of starch polysaccharides

Practical limits of some standard chemical analyses in pollution control

Use of the Filter-Sandwich carriers in continuous effectiveness monitoring of slurry treatment methods as an element improving biosafety in agriculture

Oznaczanie etylobicyklofosforanu w materiale biologicznym metoda chromatografii gazowej

The elements of specific biological activity in therapeutic waters in Polish health resorts

Zastosowanie deskryptorow strukturalnych w analizie parametrow fizykochemicznych [QSPR] wybranych substancji aktywnych srodkow ochrony roslin

Charakterystyka jakosci miodow wielokwiatowych z roznych regionow Polski

I edycja ogolnopolskiego konkursu wyrobow spirytusowych: O Znak Najwyzszej Jakosci

Jakosc oszczypkow z uwzglednieniem oceny mleka owczego i zetycy

Quality of kefir produced using ActiveFlora probiotic