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Abstract

Magnesium aluminate spinel (MgAl2O4) is an important refractory material of magnesia origin. It is formed by the reaction of magnesium and aluminum oxides. In this study, TiO2 was added to magnesite waste and alumina (Al2O3) powders in different proportions and the mixtures were sintered at different temperatures after shaping. The aim of this study was to produce spinel economically by recycling waste materials. Therefore, titanium dioxide (TiO2) added magnesium aluminate spinel was produced and the products obtained were characterized by XRD and SEM-EDS analyses. In addition, bulk density, apparent porosity and microhardness values were measured and the effects of TiO2 additive on magnesium aluminate properties were examined. The better values were determined in samples doped 4 wt.% TiO2 at the sintering temperature of 1400°C.
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Authors and Affiliations

N. Canikoğlu
1
ORCID: ORCID

  1. Sakarya University, Engineering Faculty, Department of Metallurgical and Materials Engineering, Sakarya/Turkey
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Abstract

Desmopathy of the collateral ligaments of the equine interphalangeal joint is caused by a combination of factors, including hoof shape, excessive loading and ground surface. This complex problem poses a diagnostic challenge due to the non-specificity of perineural analgesia and the limitations associated with the most popular imaging methods such as radiography and ultrasonography. The aim of this study was to retrospectively determine the prevalence of desmopathy of the collateral ligaments of the equine distal interphalangeal joint in Poland between 2016 and 2019, and to establish the frequency and type of the associated pathologies. Desmopathy of the collateral ligaments of the distal interphalangeal joint was diagnosed in 14% of 152 horses examined by magnetic resonance imaging (MRI). In 64% of the cases, other changes were observed in the equine digit, and in 36% of the cases, desmopathy was the only diagnosed problem. Desmopathy of the collateral ligaments is not a frequently reported pathology in the distal part of the equine limb. The diagnostic difficulties described in this article suggest that considerable caution should be exercised when formulating the final diagnosis, prognosis and treatment options.
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Authors and Affiliations

M. Mieszkowska
1
J. Abako
1
M. Mieszkowski
2
Y. Zhalniarovich
1

  1. Department of Surgery and Radiology with Clinic, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego 14, Olsztyn, 10-719, Poland
  2. Department of Anesthesiology and Intensive Care, Faculty of Medicine, Collegium Medicum, University of Warmia and Mazury in Olsztyn, al. Warszawska 30, 10-082, Olsztyn, Poland

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