Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish agriculture universities presents original papers and review articles relevant to all aspects of natural and engineering sciences. Covered by AGRICOLA, AGRO, AGRIS, Copernicus Index, IFIS Publishing (FSTA – Food Science and Technology Abstracts), DOJE-Directory of Open Access Journal, National Marine Biological Library UK, CAS USA (Chemical Abstracts), Ulrich's Periodicals Directory, Free E-journals, Worldcat, Thomson Zoological Record and ALPSP (Association of Learned and Professional Society Publisher – full membership). Presented in the Master List of Thomson ISI. License CC-BY.

Founded in 1998 ISSN 1505-0297

EJPAU, 1999, Volume 2, Issue 1

No / Available Online	Discipline	Sort By: Date - Discipline - Title Abstracts: Hide Abstracts Title Autors
2(1) #02 01 Mar 1999	Agronomy	CHANGES IN THE CONTENT OF PHENOLIC ACIDS IN LOOSE SAND AND BROWN SOIL FERTILISED WITH SOIL FROM SUGAR-PROCESSING PLANT SEDIMENTATION TANKS Roman S. Reszel, Stanisław Baran, Hanna Reszel

A single dose of 10, 25 and 50% (weight percentage) of the soil collected from sugar-processing plant was added to loose sand and brown soil. A four year - pot experiment was set where the following were cultivated, in turn: corn, buckwheat, spring wheat and corn. It was observed that the content of phenolic acids in soil grew proportionally to the dose of soil introduced and it was positively correlated with the contents of C-org, N-org, available P, K and Mg forms, floatable forms and sorption capacity, as well as the plant yield and its nitrogen and magnesium contents. However, the content of phenolic acids in brown soil did not show a linear dependence on the sediment dose, it correlated negatively with the amount of C fraction most susceptible to biological oxidation and with microbiological respiration activity, yet positively with the concentration of potassium available in soils, yield and its nitrogen content.
2(1) #01 01 Mar 1999	Veterinary Medicine	CORTICAL BRANCHES OF THE MIDDLE CEREBRAL ARTERY IN THE WILD BOAR (SUS SCROFA L.) Benedykt Skoczylas, Cezary Wiland

Anatomical arrangement of the middle cerebral artery in the wild boar was described based on 92 brain hemispheres. The artery was found to form 10 branches. Two rhinal arteries supply the part of cerebrum situated between the old and new cortex. Of the remaining 8 branches three are directed to the frontal region, two to the parietal region, while three temporal branches supply blood only to the new cortex. In the wild boar in 62% cases the rostral cerebral artery gave two, and in 38% cases three independent branches.
2(1) #01 01 Mar 1999	Agronomy	FLOW CYTOMETRIC ANALYSIS OF NUCLEAR REPLICATION STAGES DURING GERMINATION OF SUGAR-BEET SEEDS DIFFERENT IN VIGOUR Elwira Sliwińska, Hans Christian Pedersen

The nuclear replication stages in dry and germinating seeds of two sugar-beet cultivars were determined by flow cytometry. For each cultivar two seed lots of similar, high germination capacity, but different in seedling length vigour index (SLVI; applied as quality marker) were studied. Analyses were performed every 12 hours during 72 hours of germination and early seedling growth at 20^oC and 15^oC. Before start of germination, in all seed lots, about 90% of cells were arrested in the G₁ phase of the cell cycle. The proportion of G₁ cells decreased with time of germination, faster in higher quality seed lots than in those of lower quality. The G₂/G₁ ratio in dry seeds was slightly higher for the seeds of higher SLVI, and it increased during germination in all seed lots. However, the difference between higher and lower quality seeds of the same cultivar did not become more distinct during germination. The differentiation in cell cycle activity wa
2(1) #01 01 Mar 1999	Environmental Development	FORECAST OF INFLUENCE OF PLANNED SAND OUTPUT FROM UNDER WATER FROM “OBORA” SANDPIT ON LEVEL AND QUALITY OF UNDERGROUND WATER Mieczyslaw Chalfen, Wieslaw Szulczewski

The analysis of the influence of planned increase of sand output from under water in Obora sandpit on water relations of neighboring areas is conducted in this paper. The bases for the performed simulations were mathematical models based on Boussinesq equations and hydrodynamic dispersion equations. The model includes all most important factors occurring in a given area influencing the hydroisohipses system and lines of chemical pollutant concentrations. Apart from typical hydrogeological elements such as water-courses, wells, and supplying from the aeration zone, the terrains depression caused by copper ore exploitation was also considered. As results from the carried out multi-variant simulation computations, the planned sand output will not cause the formation of depression hopper and will not significantly deteriorate the quality of underground water in the area surrounding the sandpit.
2(1) #01 01 Mar 1999	Animal Husbandry	INFLUENCE OF SELENIUM ADDITIVE ON RAM SEMEN FREEZING QUALITY Beata Seremak, Jan Udala, Bogdan Lasota

The tests were conducted on 16 eiaculates sampled from 4 rams. After sampling and assessment the semen was divided into 3 parts: I test, II with the addition of 1 g Se/ml, III - with the addition of 10 g Se/ml. The semen was made subject to a 4-hour equilibration at the temperature of 4^oC, and then frozen.
2(1) #01 01 Mar 1999	Fisheries	ZOOPLANKTON–BASED ASSESSMENT OF THE LAKE MIEDWIE (NORTH–WESTERN POLAND) TROPHIC STATUS Barbara Szlauer

Studies on the Lake Miedwie zooplankton, associated with measurements of water temperature, dissolved oxygen content, and transparency showed the presence of at least 35 rotifer, 10 cladoceran, and 10 copepod species as well as the occurrence of mesotrophic lake indicators: Bythotrephes longimanus, Cyclops scutifer, and Daphnia cristata. The mesotrophic status of the lake is documented also by the structure of the zooplankton community and by the results of the Daphnia magna test for water fertility. All the data demonstrate the improvement in the lakes condition, compared to that in the 1980s. The results obtained attest to the need of biotic parameters to be incorporated into Lake Miedwie monitoring.
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