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Distribution of nitrogen and phosphorus compounds in filter media of constructed wetland

Gasiunas, V., Lithuanian Univ. of Agriculture, Vilainiai [2010]

The objective of the present studies is to estimate a distribution of nitrogen and phosphorus compounds in filter media of horizontal filters. The studies were carried out in 2009 within two wastewater treatment facilities of horizontal flow in Lithuania. From both treatment facilities sand samples of different depth and separate profiles in the direction of water flow were taken. These sample ...

SUBJECT: investigacion; contenido de humedad; letonia; wastewater treatment; composicion quimica

POSTED TO: Research for Rural Development. International Scientific Conference Proceedings (Latvia) [1691-4031]

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Due to the recently increasing frequency of extreme changes in river runoff regime, scientific literature deals with the characteristics of runoff formation. Works are carried out in analyzing climate changes and a lot of attention falls on land–use structures. Following thorough analysis of the lithological structure of river basins in separate costal zones, this article aims at evaluating ri ...

SUBJECT: investigacion; letonia; lithuania; hydrologie; escorrentia

POSTED TO: Research for Rural Development. International Scientific Conference Proceedings (Latvia) [1691-4031]

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The pollution of the river water with organic matter deteriorates the chemical, biological and microbiological quality of the water and has a negative effect upon the biological variety of the water environment. The paper analyses the study period (1996-2000) seasonal change of organic matter in the upper reaches of the River Nevezis (study sites upstream and downstream Panevezys). The highest ...

SUBJECT: investigacion; materia organica; letonia; water pollution; polucion del agua

POSTED TO: Research for Rural Development. International Scientific Conference Proceedings (Latvia) [1691-4031]

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Mineral nitrogen and phosphate cycles in different crop rotations

Guzys, S., Lithuanian Univ. of Agriculture, Vilainiai [2010]

A current investigation compared various intensive crop rotations (Norfolk, row crops, cereals, short term grass) grown on Cambisols. The study results showed significant effects of N-fertilization of the agroecosystem on mineral N concentration in drainage water and its leaching process. The highest N concentration in drainage water and leaching was determined in the conditions of cereals and ...

SUBJECT: investigacion; soil chemicophysical properties; letonia; water pollution; abonos npk

POSTED TO: Research for Rural Development. International Scientific Conference Proceedings (Latvia) [1691-4031]

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Global warming undoubtedly influences the flow of rivers. It is essential to observe the climate changes, trace, analyse and forecast how they could influence the environment and, especially, how it can influence the flow of rivers. In this article two maximum flows of basins of two different rivers are analyzed: the river Venta (above Papile) and the river Krazante (above Pluskiai) during the ...

SUBJECT: investigacion; letonia; cambio climatico; methode statistique; climatic change

POSTED TO: Research for Rural Development. International Scientific Conference Proceedings (Latvia) [1691-4031]

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Comparable analysis of financial ratios of farms and impact of subsidies on them in the European Union countries

Alekneviciene, V., Lithuanian Univ. of Agriculture, Akademija et al. [2011]

Financial ratios of the EU countries' farms, their comparative analysis and interpretation from the financial management point of view, the impact of subsidies on financial situation of farms are presented in the article. The research was carried out for the first time. The novelty is both in the methodology (due to the specific methodology of financial ratios calculation and limitations of th ...

SUBJECT: investigacion; subsidios; letonia; economic analysis; subvention

POSTED TO: Economic Science for Rural Development (Latvia) [1691-3078]

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Teaching mathematics at the Faculty of Economics and Management

Rimkuviene, D., Lithuanian Univ. of Agriculture, Akademija et al. [2011]

Mathematics is an auxiliary subject for students of the University of Agriculture. Nowadays, in many fields specialists find the right activity development complicated unless the sufficient level of mathematical literacy is possessed. Traditionally, Lithuanian University of Agriculture is more attractive to students from rural schools. They have lower academic achievements than those applying ...

SUBJECT: universidades; investigacion; enseignement; letonia; ensenanza

POSTED TO: Economic Science for Rural Development (Latvia) [1691-3078]

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Enzymes play an important role in cereal processing not only because in many instances they have an impact on processability, but also they add to final product quality. High activities of different hydrolytic enzymes could cause the losses of grain quality and lead to processing problems and unsatisfactory end-products. However, the information on the impact of various cultural practices and ...

SUBJECT: investigacion; cereales; letonia; organic agriculture; conventional farming

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Interest in the development of bioprocesses for the production or extraction of bioactive compounds from natural sources has increased in recent years due to the potential applications of these compounds in food, chemical, and pharmaceutical industries. Obtention of 1kg of spice from saffron stigmas generates 150 000 blooms and 1 500 kg of leaves, which are presently both considered as waste. ...

SUBJECT: investigacion; saffron; safran; letonia; compose de la flaveur

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The residues obtained after hydrodistillation of three aromatic plants (Calamintha grandiflora, Myrrhis odorata and Tussilago farfara) were separated into solid and liquid fractions. The liquid fraction was dried while the solid fraction was extracted with acetone, methanol or ethanol. Two main types of antioxidant activity tests were employed: i) assays to evaluate oxidation of fats, oils and ...

SUBJECT: plante a huiles essentielles; investigacion; letonia; essential oil crops; antioxidants

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