Wyniki wyszukiwania - AGRO

1

Interactions entre les ondes de gravite et un fond deformable en eau de faible profondeur

100%

Boczar-Karakiewicz B.

Oceanologia

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1978

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tom 09

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Is the ecosystem services concept useful in Polish policy making? Qualitative analysis of experts perception

100%

Maczka K., Matczak P.

Ekonomia i Środowisko

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2014

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nr 4[51]

3

X-ray fluorescence [XRF] - modern spectrometric method of inorganic quantitative and qualitative environmental analysis

100%

Kondzielski I., Szymanski T., Buczkowski R.

Ochrona Środowiska i Zasobów Naturalnych

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1999

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tom 18

4

Qualitative analysis and estimation of content of phenolic acids from fruit of Hacquetia epipactis [Scop] DC. by chromatographic methods

100%

Bartnik M., Stolarczyk A., Glowniak P., Burczyk J., Glowniak K.

Herba Polonica

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2003

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tom 49

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nr 3-4

Hacquetia epipactis (Scop.) DC. (Umbelliferae) is the only species of the genus Hacquetia growing mainly in Poland. In presented work extracts from fruits of this plant were investigated on the presence of phenolic acids. Free phenolic acid fractions and fractions obtained from the acid and alkaline hydrolyses were analysed by 2D TLC on cellulose layers. Chromatograms were observed in UV light (366 nm) before and after treatment with ammonia vapour and in daylight after derivatisation with 3% FeCI3 or diazotized sulphanilic acid. RP-HPLC analysis was performed using mobile phase methanol-water (20:80) with 1% acetic acid (v/v). Before HPLC samples had been purified using SPE method. The contents of phenolic acids in extract from fruits of Hacquetia (in ng/g of dry mass) were as follows: 47.69 - caffeic, 34.00 - p-coumaric, 15.35 - protocatechuic, 9.03 - p-hydroxybenzoic, 7.31 - ferulic and 6.22 - vanillic acid.

5

Comparative analysis of anthocyanin composition of juices obtained from selected species of berry fruits

100%

Stoj A., Malik A., Targonski Z.

Polish Journal of Food and Nutrition Sciences

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2006

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tom 15/56

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nr 4

A qualitative and quantitative analysis of anthocyanins in juices of three varieties of strawberry (Senga, Ducat, Marmolada), raspberry (Beskid, Canby, Malling Seedling), black currant (Ben Lomond, Titania, Ojebyn) and red currant (Rondom, Jonker, Holenderska) picked in three following years: 1998, 1999 and 2000, was presented in this paper. An HPLC technique was applied using a Gilson chromatograph and a DAD detector. Prior to the chromatographic analysis, anthocyanins were purified on a mini-column Sep-Pak C18 Waters. It was indicated that within species the juices examined differed in the quantitative and qualitative composition of anthocyanins. Pelargonidin-3-glucoside and cyanidin-3-xylorutinoside were the main anthocyanins in strawberry and red currant juices, respectively, independently of variety. Those anthocyanins were not detected in raspberry and black currant juices, in which cyanidin-3-sophoroside as well as delphinidin-3-rutinoside and cyanidin-3-rutinoside were the main anthocyanins, respectively. Differences of anthocyanin composition of juices obtained from different berry fruits create the possibility of detecting the adulterations of expensive raspberry and black currant juices with cheap strawberry and red currant juices on the basis of anthocyanin analysis.

6

Chemical composition and cytotoxic activity of the polysaccharide fraction in Sarcodon imbricatus (Basidiomycota)

84%

Sulkowska-Ziaja K., Muszynska B., Ekiert H.

Acta Mycologica

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2012

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tom 47

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nr 1

The aim of the study was chemical analysis of polysaccharide fractions from sporocarps of Sarcodon imbricatus collected in natural sites and from the mycelium of in vitro cultures. Three polysaccharide fractions (FOI, FOII, FOIII) were isolated from sporocarps and two (FKI, FKII) from in vitro cultures. Qualitative analysis by HPLC method showed that they are composed of galactose and fucose (FOI, FKI) or glucose and fucose (FOII, FKII). FOIII fraction of the sporocarps consisted of glucose only. Molecular weights of isolated fractions ranged from 3.8 to 16.3 kDa for fractions from the sporocarps and from 5.8 to 14.7 kDa for that ones isolated from in vitro culture. The total percentage of sugar content for all fractions ranged from 97.8% to 99.1%. The percentage of uronic acids contents in acidic fractions was 2.6% and 2.7% for the FOI and FKI respectively. The work included also an assessment of cytotoxic activity of polysaccharide fractions in relation to tumor cell lines of human breast cancer MCV-7. FOI polysaccharide fraction of the sporocarps inhibited the growth of cancer cells in 50% compared to the control at a concentration of 0.0125%, while the polysaccharide fraction FKI from in vitro cultures inhibited cell growth in a concentration of 0.016%.

7

Comparative study of qualitative structure the beech logs sorted by the old and the new European standard EN 1316-1

84%

Racko V., Cunderlik I.

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

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2013

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tom 84

8

Proba rozdzialu kwasow fenolowych zawartych w granulacie keratyno-mocznikowym przy uzyciu kapilarnej elektroforezy strefowej

84%

Bowanko G.

Acta Agrophysica

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2000

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tom 38

29-35

Wykorzystując metodę kapilarnej elektroforezy strefowej przeprowadzono rozdział kwasów fenolowych w granulacie keratyno - koro-mocznikowym (KKM), ustalając warunki tego rozdziału.

9

Variation of phenolic acids from herb and roots of Salsola kali L.

84%

Sokolowska-Krzaczek A., Skalicka-Wozniak K., Czubkowska K.

Acta Societatis Botanicorum Poloniae

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2009

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tom 78

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nr 3

197-201

Qualitative and quantitative analysis of phenolic acids present as free and liberated from their conjunction with sugars and alcohols after hydrolysis in Salsola kali L was done, together with comparison of their content in roots and herb. Analysis was conducted by 2D-TLC and HPLC methods. Eleven phenolic acids were identified such as: protocatechuic, caffeic, gentisic, p-coumaric, p-hydroxybenzoic, p-hydroxyphenylacetic, syryngic, vanillic, ferulic, α- and ß-resorcylic. Differences in composition of fraction of free phenolic acids and those liberated after hydrolysis were noticed. The amount of individual compounds were in the range between 0.10±0.04 mg/100 g of dry weight for p-OH-benzoic acid and 6.40±1.75 mg/100 g of dry weight for ferulic acid.

10

Preliminary surveys on the lactic acid bacteria occurrence in the Baltic Sea fishes

84%

Daczkowska-Kozon E.

Acta Ichthyologica et Piscatoria

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1988

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tom 18

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nr 2

11

Algae communities in springs of Lodz Hills scarp with diversified hydrochemical conditions

84%

Zelazna-Wieczorek J., Ziulkiewicz M.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2004

|

tom 01

12

Political dimension of Arctic research

84%

Luszczuk M., Padrtova B., Szczerbowicz W.

Oceanologia

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2020

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tom 62

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nr 4PB

13

Influence of the pedogenic process of humus accumulation on the physical and chemical transformation of quartz grain surfaces

84%

Chojnicki J., Zagajewski A.

Polish Journal of Soil Science

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2010

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tom 43

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nr 2

The pedogenic process of humus accumulation causes stronger and more diverse chemical rather than physical transformations of quartz grain surfaces. Chemical weathering of quartz grain surfaces in the humus horizon results in etching and corrosion over oncrusting and encrusting; an opposite situation is observed in the parent rock and the underlying rocks. Etchings and corrosion pits in the humus horizon were formed in the pedogenic process of humus accumulation, whereas oncrustings and encrustings in the parent rock and the underlying rocks are of geological origin. Microchemical analysis (EDS) indicated the highest total content of Si, Ca, Al and Fe in the oncrustings and encrustings on quartz grains.

14

Quantitative and qualitative analysis of live sheep production from mass breeding system. Part II. Slaughter value of live sheep and the analysis of conditions of the functioning of the sheep breeding sector

84%

Liskiewicz M. J., Gruszecki T. M., Gregula-Kania M.

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2013

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tom 31

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nr 3

15

Mapping sea ice distribution in the Puck Bay from MODIS satellite data

84%

Urbanski J. A., Kryla L.

Oceanological and Hydrobiological Studies

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2006

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tom 35

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nr 4

16

Qualitative and quantitative analysis of the postnatal development of the ventroposterolateral nucleus of the thalamus in rat and rabbit

84%

Luczynska A., Dziewiatkowski J., Jagalska-Majewska H., Kowianski P., Wojcik S., Labuda C., Morys J.

Folia Morphologica

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2003

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tom 62

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nr 2

The morphometric analysis of changes occurring in the rat and rabbit ventroposterolateral (VPL) nucleus of the thalamus during the postnatal development was performed using unbiased stereological methods. The materials used in the study included 30 Wistar rats and 32 New Zealand rabbits aged from P0 to P180 (P-postnatal day), which were divided into six and eight age groups, respectively. The following stereological parameters of VPL nucleus on the cresyl violet stained sections were determined: volume of the nucleus, numerical density and total number of neurons. The total number of neurons indicated that the development of VPL nucleus in both species ended within the third week of postnatal life. The volume of VPL nucleus increased gradually (by about 2.2 and 5 times in rats and rabbits, respectively) in comparison with the volume of the cerebral hemisphere during the development from P0 to adulthood. The numerical density of VPL neurons decreased rapidly at the beginning of postnatal life and stabilized by the end of the third week. In both species, the gradual increase in the volume of VPL nucleus and the simultaneous decrease in the neuronal density in the first week of postnatal life were mainly caused by changes in the neuropil volume. The total number of cells did not change remarkably during the first postnatal week. However, it decreased significantly during the second week. This decrease was probably due to the naturaly occuring cell death. These results show that the most prominent qualitative and quantitative changes in VPL nucleus and its neurons occur during the first two weeks of postnatal life of rats and rabbits. Also, because the thalamocortical relay neurons completely acquire their physiological features, this the most critical period of time for their morphological maturation.

17

Detection, separation and analysis of alpha-amino acids by means of TLC using 4-dipropylaminodiazabenzene-4'-isothiocyanate (DPABITC)

84%

Wawrzycki S., Pyra E., Wawrzycki B.

Herba Polonica

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2000

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tom 46

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nr 4

Przeprowadzono syntezę i zastosowano uzyskany 4-dipropyloaminodiazabcnzeno-4'-izotiocy- janian (DPABITC) do otrzymywania tiohydantoinowych pochodnych 15 a-aminokwasów (DPABTH-AMK). Barwne pochodne rozdzielano metodą chromatografii cienkowarstwowej (TLC) na żelu krzemionkowym stosując układy rozpuszczalników różnych klas.

18

Qualitative and quantitative analysis of Baltic phytoplankton pigments

84%

Ston J., Kosakowska A.

Oceanologia

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2000

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tom 42

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nr 4

The paper presents the results of research into the pigment composition of seawater samples taken from various depths in the Gulf of Gdańsk in April and September 1999. Pigments were separated by RP–HPLC, and identification was confirmed by co-injection with reference standards and on-line diode array spectra. The following groups of pigments were identified: chlorophylls: a, b, c1 + c2; photosynthetic carotenoids (PSC) – peridinin, fucoxanthin, α-carotene; photoprotecting carotenoids (PPC) – diadinoxanthin, alloxanthin, zeaxanthin, lutein, neoxanthin, violaxanthin and β-carotene. Quantitative and qualitative diversity in pigment characteristics were observed in both seasons, though lutein and α-carotene were not identified in the September samples. The respective April and September concentrations of the functional groups of pigments were: total chlorophylls content 0.47–104.25 and 0.57–13.66 μg dm−3; PSC 0.07–21.23 and 0.02–1.56 μg dm−3; PPC 0.05–14.08 and 0.04–1.79 μg dm−3. Within the PSC group, peridinin and fucoxanthin were dominant in the April samples, but only fucoxanthin in the September ones. Among the PPCs, diadinoxanthin and alloxanthin were dominant in April, zeaxanthin in September. Photosynthetic and photoprotecting carotenoids display a linear correlation with chlorophyll a content in all the samples.

19

Long-term changes of phytoplankton in Lake Mamry Polnocne

84%

Napiorkowska-Krzebietke A., Hutorowicz A.

Oceanological and Hydrobiological Studies

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2005

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tom 34

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nr Suppl.3

20

Dynamics of the phytoplankton community in mesotrophic Lake Borowno

67%

Wisniewska M., Paczuska B.

Oceanological and Hydrobiological Studies

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2013

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tom 42

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nr 2

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