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Changes in soil density under influence of tractor wheel pressures

100%

Powalka M., Bulinski J.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

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2014

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nr 63 Agric.Forest Eng.

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Investigation of density change of agricultural materials

84%

Didukh V., Tsyz I.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2003

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tom 03

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Effect of compacting soil on changes in its strength

84%

Powalka M., Bulinski J.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

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2014

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nr 63 Agric.Forest Eng.

4

Breeding bird dynamics in a primeval temperate forest over thirty-five years: variation and stability in the changing world

67%

Wesolowski T., Mitrus C., Czeszczewik D., Rowinski P.

Acta Ornithologica

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2010

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tom 45

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nr 2

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Effect of variable temperature and moisture content conditions on selected properties of wood-CFRP composite

67%

Burawska I., Zbiec M., Beer P.

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

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2012

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tom 77

Effect of variable temperature and moisture content conditions on selected properties of wood-CFRP composite Intended structural application of wood-CFRP composite requires analysis of its properties in time function, including environmental conditions changes. The paper presents results of selected mechanical and physical properties of composite, using artificial aging methods. It was shown that artificial aging cycles determined according to standards and other regulations, relating to 1 year of natural aging, caused a decrease of composite's density, as well as a significant decrease of Young's modulus, with negligible change in the values of bending strength.

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Changes in the density and spatial structure of trees in pine stands planted at different initial spacing

67%

Ceitel J., Szmyt J.

Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu

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2004

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tom 69

7

Relationship between Cognetia sphagnetorum Vejd. [Oligochaeta, Enchytraeidae] and soil microorganisms: a microcosm experiment

67%

Nowak E., Piotrowska-Seget Z.

Polish Journal of Ecology

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2005

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tom 53

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nr 2

Changes in densities of microorganisms were analysed in Cognetia sphagnetorum Vejd. cultures at normal and low numbers of microorganisms. Different abundance of microorganisms was achieved by using captan and oxytetracycline. During 14 weeks, the following variables were measured: total numbers of bacteria and fungi by plate method, the biomass of microorganisms by PLFA method, content of ions, and activity of acid and alkaline phosphatase and urease. Numbers of enchytraeids increased with numbers of fungi. The presence of animals reduced the activity of soil enzymes and the content of Cl, SO₄, Na, Ca, and Mg ions in soil leacheates. An increase in the content of N-NO₃ and N-NH₄ was not significant.

Ograniczanie wyników

2 Annals of Warsaw University of Life Sciences - SGGW. Agriculture

1 Acta Ornithologica

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

1 Polish Journal of Ecology

1 Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu

1 Teka Komisji Motoryzacji i Energetyki Rolnictwa

2 Bulinski J.

2 Powalka M.

1 Beer P.

1 Burawska I.

1 Ceitel J.

1 Czeszczewik D.

1 Didukh V.

1 Mitrus C.

1 Nowak E.

1 Piotrowska-Seget Z.

1 Rowinski P.

1 Szmyt J.

1 Tsyz I.

1 Wesolowski T.

1 Zbiec M.

2 2014

1 2012

1 2010

1 2005

1 2004