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Action of selected disinfectants on Toxocara canis eggs

100%

Laciak V. , Laciakova A. , Mate D. , Severa J. , Pagac M.

Medycyna Weterynaryjna

2009

tom 65

nr 02

The goal of the work was to monitor the occurrence of helmintologic disorders of dogs in the district of Košice-surroundings. Moreover, the authors wished to evaluate the potential devitalising effect of the following selected chemical substances and disinfective agents: NaOH (5%, 70°C), Savo (10%), Saniten (10%), H1(100%) on eggs of T. canis under laboratory conditions. Using coprologic examination the authors realized that the most common eggs in dog feces are of T. canis (41.4%). Then follow eggs of Trichuris sp. (21.8%), T. leonina (11.5%), eggs from the Ancylostomatidae group (9.2%) and Capillaria sp. (2.3%). Under laboratory conditions, the ovocide effectiveness of NaOH on nonembryonated eggs of T. canis by an exposition of 180 minutes was 23.98 ± 4.33%. The disinfective agent SAVO also had low effectiveness; by an exposition of 180 minutes it devitalized 24.77 ± 5.33% of eggs of T. canis. A higher effectiveness was evidenced by the disinfective agent Saniten. Using the disinfective agent H1, 98.04 ± 1.77% eggs of T. canis were devitalized. Based on the testing of each agent under laboratory conditions the authors can recommend the usage of the disinfective agent Hviezda, as it evidenced the best devitalizing effect on the eggs of T. canis.

Research of 316L metallic powder for use in SLM 3D printing

100%

Hajnys J. , Pagac M. , Mesicek J. , Petru J. , Spalek F.

Advances in Materials Science

2020

tom Vol. 20, nr 1(63)

5--15

3D metal printing is an increasingly popular production of steel parts. The most widespread and most accurate method is SLM (Selective Laser Melting), which uses metallic powder as the input material. The article is dedicated to researching the supplied powder from Renishaw. The powder is made by gas atomization and 3 phases of powder (virgin, sift and waste) that are present in the SLM process are examined. Powder morphology by SEM electron microscopy is investigated and the porosity of the powder is measured by optical method. Next, the powder grain size fraction is examined. In conclusion, there are recommendations and other directions of possible research. The main quantitative result from research is that, in general, small particles are reduced in the sift powder and the number of larger particles is increased, but the powder is still usable for further use.