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Abstract

In the past decades, Mg alloys have been studied intensively as potential orthopedic applications. The present research work, the FEA of the obtained contact stresses in the case of the load applied on Mg-0.5Ca-xMn alloys has been investigated. It has been used the NCB Curved Femur Shaft Plate type as a model in order to establish the necessary modeling parameters. The objective of the present work was to highlight the strain values at the contact point on the surface of the Mg-0.5Ca-xMn alloys. The results showed that the highest stresses observed near the gaps of the plate and in the screws. It means that all mechanical loads are sustained by the plate and screws, and the patient’s femur can be recovered.
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Authors and Affiliations

R.O. Nastasa
1
ORCID: ORCID
A. Tufescu
1
ORCID: ORCID
C. Munteanu
1 2
ORCID: ORCID
B. Istrate
1
ORCID: ORCID
A. Przybył
3
ORCID: ORCID
G. Ianus
1
ORCID: ORCID

  1. Gheorghe Asachi Technical University, Faculty of Mechanical Engineering, Blvd. Mangeron, No. 43, 700050, Iasi, Romania
  2. Technical Science Academy of Romania, 26 Dacia Blvd, Bucharest 030167, Romania
  3. Częstochowa University of Technology, Department of Physics, 19 Armii Krajowej Av., 42-200 Częstochowa, Poland
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Abstract

In the present study a severe outbreak of hemorrhagic pneumonia (HP) in neonatal minks concomitant with Leismania infantum (L. infantum) detection is reported. The outbreak took place on a Greek mink farm and affected 1,362 mink kits, with 524 dying. Macroscopic lesions of 14 necropsied affected kits were confined to the respiratory system with dark red, consolidated lung lobes and to the small intestine with severe, acute, hemorrhagic and necrotic enteritis. Microscopic examination of lung sections revealed severe hemorrhagic pyogranulomatous pneumonia. Bacteria were obtained in pure culture from the lungs of all necropsied animals and were confirmed as Pseudomonas aeruginosa (P. aeruginosa). Three out of 14 (21.4%) animals were positive for the presence of L. infantum DNA. The outbreak was attributed to the infection of minks with P. aeruginosa, possibly as a consequence of being immuno-suppressed by L. infantum. Further research is necessary, especially on the pathogenesis of P. aeruginosa/L. infantum co-infection and the implications of this interaction on HP disease outcome.
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Authors and Affiliations

G. Filioussis
E. Petridou
D. Papadopoulos
E. Karavanis
E. Morgan
C. Billinis
E. Papadopoulos

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