Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 7

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  alkalinity
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Evaluation of some bean lines tolerance to alkaline soil

100%
Radi A. A., Abdel-Wahab D. A., Hamada A. M.
Journal of Biology and Earth Sciences
|
2012
|
tom 02
|
nr 1
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Mapping of Spatial Distribution of Soil Salinity and Alkalinity in a Semi-arid Region

100%
Keshavarzi A., Sarmadian F.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
|
2012
|
tom 44
|
nr 1
Spatial variability of salinity and alkalinity is important for site-specific management since they are the most important factors influencing soil quality and agricultural production. Geostatistical methods provide a means to study the heterogeneous nature of spatial distributions of soil salinity and alkalinity. The present study was carried out to evaluate the accuracy of different spatial interpolation methods including kriging, cokriging and IDW methods for prediction of spatial distribution of salinity (EC) and sodium adsorption ratio (SAR) in soils of Ziaran region in Qazvin province, Iran. The tracking of the soil profi les was done using a Garmin eTrex-H model global positioning system (GPS) receiver. Sampling was done with stratifi ed random method and sixty soil samples from 0 to 15 cm depth were collected. After data normalization, the variograms were developed. For selecting the best model for competing on experimental variograms, the lower RSS value was used. Experimental variograms were fitted to spherical and exponential models. The best model for interpretative was selected by means of cross validation and error evaluation methods, such as RMSE method. The sum of Ca2++ Mg2+ and Na+ concentration which were highly correlated with soil salinity and sodium adsorption ratio, respectively, are used as auxiliary parameters in this study. The results showed that kriging and cokriging methods were better than IDW method for prediction of EC and SAR. Finally, the soil EC and SAR maps were prepared, using different spatial interpolation methods in GIS environment.
3

Niektóre systemy nawapniania sokow cukrowniczych

80%
Ginal S.
Gazeta Cukrownicza
|
1988
|
tom 96
|
nr 06
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Quantity of selected physical and chemical parameters in surface microlayers and subsurface water on the example of three lakes

80%
Antonowicz J.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
|
2008
|
tom 12
For the period of 4 years, in quarter-time cycle, samples had been taken from surface microlayers and subsurface water of the lakes: Gardno, Jasień and Dołgie Wielkie, by two techniques (Garret net and glass plate). In each talked over layers we have analyzed contents of calcium, general alka-linity, conductance and water reaction (pH). We have also determined the ability of surface mi-crolayer to accumulate these components and we have compared it to subsurface water ability and verified whether this ability depends on the kind of the lake.
5

Alkaliczność soku rzadkiego i jej zmiany podczas zagęszczania i krystalizacji

80%
Hangyal K., Gryllus V.
Gazeta Cukrownicza
|
1988
|
tom 96
|
nr 04-05
6

Investigations on the transfer of chemical substances at the water-sediment interface in the Puck Bay

80%
Bolalek J., Falkowska L., Jankowska H., Vershinin A.
Oceanologia
|
1991
|
tom 30
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Analysis and assessment of technological processes of the Miedwie Lake surface water treatment plant for the city of Szczecin

71%
Wira J., Wira D.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
|
2005
|
tom 09
Miedwie Lake is the biggest post-glacial lake of the West-Pomeranian Voievodship. At the same time it is the fifth of the largest lakes in Poland. As regards the geographical situation, Miedwie Lake is situated centrally between three big agglomerations i.e. Szczecin, Stargard Szczecinski and Pyrzyce (Fig. 1). The lake lies on the territory of three municipalities: Pyrzyce and Warnice in the District of Pyrzyce as well as Stargard Szczecinski in the District of Stargard (Rozmiarek 1983, Szyper 1990). At the moment, the reservoir is characterised with the regular, prolonged shape resembling an ellipse. Banks are shallow, regular and sometime very wet. The lake has the belt of the nearshore reaching locally tens metres far from the lake bank, what is the reason, together with the fact that the wind blows always here, that it is convenient for practising the various kinds of water sports. The lake area amounts to 3 527 ha; maximal depth – 43.8 m; average depth – 19.3 m; water capacity – 681.7 mln m3; shore-line length – 38.8 km; water level datum 14.1 m above sea level; maximal width 3.16 km; maximal length 16.2 km. The lake’s bottom is the lowest situated area on the territory of Poland.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.