We consider the discrete system resulting from mixed finite element approximation of a second-order elliptic boundary value problem with Crouzeix-Raviart nonconforming elements for the vector valued unknown function and piece-wise constants for the scalar valued unknown function. Since the mass matrix corresponding to the vector valued variables is diagonal, these unknowns can be eliminated exa...

In this paper we develop and analyze a family of mixed finite element methods for the numerical solution of the Stokes problem in two space dimensions. In these schemes, the pressure is interpolated on a mesh of quadrilateral elements, while the velocity is approximated on a triangular mesh obtained by dividing each quadrilateral into four triangles by its diagonals. Continuous interpolations o...

The aim of this study was to determine the composition and nutritional value of conventional and transgenic, so-called Roundup Ready (RR) maize with an introduced gene of glyphosate resistance. Crude protein, crude fibre, ash, fat, starch, sugar, amino acids, fatty acid and macroelement levels were determined by chemical analysis. In both maize lines a low level of Ca (0.15 g.kg-1 DM) and of th...

Juniperus drupacea fruit is widely used in traditional and complementary medicine Turkey for the treatment of different diseases various forms such as molasses tar. This study was carried out to evaluate phenolic compounds, organic acid, sugar, macro- micromineral distributions methanol water extracts J. drupace fruit, well their antioxidant antimicrobial potential. For this purpose, total cont...

Although most tomatoes are grown in open ground, their cultivation glass greenhouses or tunnel-typegreenhouses covered with plastic film is becoming more common to supply local markets fresh fruit. In closed soil, mainly tall varieties of grown. They make it possible use the area as efficiently and get rich harvests. Tomatoes can be stored for 11 months, unlike those ground. usually harvested u...

Relevance. At present, the issues of mineral nutrition medicinal plants with essential elements remain unstudied, and lack certain microelements in soils is an underestimated agroecological factor. This necessitates study effect different doses zinc copper fertilizers on content mobile forms meadow-chernozem soil when cultivating Achillea millefolium L. Tanacetum vulgare southern forest-steppe ...

Theory predicts and recent study revealed that depth of the thermocline can strongly influence the nutrient availability and composition of plankton communities. We are focused on the effect of metalimnetic gradients on water chemistry and plankton communities in three stratified lakes with different trophic conditions. Vertical changes in water chemistry revealed significant increase of macroe...

Corn gluten meal (CGM) is a major coproduct of corn wet milling; it has value because of high protein. However, variation in composition and high P content reduce market value. Data that characterize gluten streams would be helpful in identifying key processing steps that could be modified to improve the quality of CGM and increase processing efficiency. Few data are published in the literature...

The macroelement (nitrogen, phosphorus, potassium, sulfur, calcium, and magnesium) contents in individual parts of 1-year-old seedlings (leaves, shoots, root system) the common beech (Fagus sylvatica L.) were investigated. grown nine different densities peat substrate (0.196–0.317 g cm−3) 265 cm3 containers. It was found that compaction influenced content seedlings. With an increase compaction,...