W doświadczeniu analizowano efektywność rozkładu fenolu przez szczep Pseudomonas putida PCM2135. Komórki bakteryjne zostały poddane adaptacji do wysokich stężeń fenolu, która polegała na stopniowym zwiększaniu jego stężenia w pożywce. Maksymalna szybkość rozkładu fenolu wyniosła 15,2 rngdrnLh'. Hadany szczep usunął 400 mg fenolu w ciągu 24 godzin. Przeprowadzone testy toksyczności wykazały. że zaadaptowane komórki /' putida PCM2153 są zdolne do przeżycia w roztworze fenolu nawet o stczcniu 3000 rngdm'. Uzyskane wyniki sugerują, że badany szczep może być wykorzystany do efektywnego oczyszczania ścieków charakteryzujących sir; wysokim stężeniem fenolu. W zawiązku z odpornością szczepu na wysokie stężenia fenolu, może on być wykorzystywany do biorcmcdiacji terenów silnie zanieczyszczonych fenolem, gdzie rozcieńczanie zanieczyszczeń jest niemożliwe.

The paper presents the results of experimental-numerical tests of firing at aluminum composite materials. The test materials were manufactured by pressure infiltration of porous ceramic preforms made of -Al2O3 particles in the amount of 30% and 40% by volume. The EN AW-7075 alloy was chosen as the material matrix, and the steel 7.62×39 mm (M 43) FMJ (Full Metal Jacket) intermediate ammunition was selected for firing. In the result of the experiment, the samples were perforated with a clear difference in the muzzle diameter. The projectile with fragments caused damage to up to three reference plates placed behind the samples (witness plates) in composites with 40% of particles by volume. The mechanics of crack propagation during ballistic impacts of the projectile was characterized based on microstructure studies. Then, using numerical analysis of impact load, the examination of composite materials puncture in the ABAQUS environment was carried out. The Finite Element Method (FEM) was employed for the discretization of geometric models using Hex elements. The Johnson-Cook constitutive model describing the relationship between stress and strain in metal-ceramic composites was applied for the analyses. Numerical models were then subjected to numerical verification using smoothed particle hydrodynamics (SPH). Based on the obtained results, it was found that the hybrid FEM/SPH method correlates significantly with the experimental results.

Using a thin layer chromatography the content and composition of krill lipids was examined in different sex and maturity stages. The content of lipids decreased in the following sequence: immature males — females with eggs — juvenile specimens — spent females — mature males. In females the differences concerned mainly phospholipids and waxes, in males — triacylglicerols; this fact proves the different utilisation of lipids for reproduction in both sexes.