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The paper presents a simulation and rendering model of three dimensional covective cloud evolution. The model is physically based, however its purpose is graphical. The main stress is put on balancing two parts of a model: the atmsphere simulation with convective motion of air and water vapor combined with rendering of semi-transparent and light-scattering clouds, in order to achieve realistic animation...
Volunteer environments usually consist of a large number of computing nodes, with highly dynamic characteristics, therefore reliable models for a planning of the whole computing are highly desired. An easy to implement approach to modelling and simulation of such environments May employ agent-based universal simulation frameworks, such as RePast or MASON. In the course of the paper the above-mentioned...
The aim of this study was to determine the prevalence of infection with gastrointestinal parasites in water buffaloes raised in the Notecka Forest region in the Wielkopolska Province (Poland). Coproscopic examinations were performed between January and June 2009. The mean prevalence of gastrointestinal parasites in the water buffalo herd was 44%. Gastrointestinal nematodes (10%) and flukes (Fasciola...
Concentration of selenium in serum samples was determined using a modified Watkinson's spectrofluorometric method. Selenium concentration averaged 0.021 ±0.008 µg/mL for water buffaloes and 0.074 ±0.017 µg/mL for dairy cows. The analysis of selenium concentrations in cows showed deficiency level in 2.0%, marginal level in 64%, and optimal level in 34% of the examined samples. In water buffaloes, deficiency...
Celem pracy było wykazanie różnic i podobieństw w zachowaniu dwóch wspólnie wypasanych gatunków zwierząt roślinożernych (bydła i koni) oraz sprawdzenie czy zachowanie zwierząt chowanych w warunkach zbliżonych do naturalnego bytowania wpływa na zmianę ich behawioru i sprzyja występowaniu zachowań typowych dla wolno żyjących przodków. Obserwacje behawioralne dotyczące 500 krów i 40 koni prowadzono przez...
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