PubMed Health⌕ Search

Biomedical subjects

N Bulut

Publications and source records attributed to N Bulut.

At least 19 recordsLinked to original sources
PubMed2006

Comparative evaluation of six ELISAs for the detection of antibodies to the non-structural proteins of foot-and-mouth disease virus.

To validate the use of serology in substantiating freedom from infection after foot-and-mouth disease (FMD) outbreaks have been controlled by measures that include vaccination, 3551 sera were tested with six assays that detect antibodies to the non-structural proteins of FMD virus. The sera came from naïve, vaccinated, infected and vaccinated-and-infected animals; two-thirds from cattle, the remainder from sheep and pigs. The assays were covariant for sensitivity, but not necessarily for specificity. A commercial kit from Cedi-diagnostics and an in-house assay from IZS-Brescia were comparable to the NCPanaftosa-screening index method described in the Diagnostic Manual of the World Animal Health Organisation. Using these three tests the specificity and sensitivity for the detection of carriers in vaccinated cattle approaches or exceeds 99% and 90%, respectively.

Animals↗
PubMed2005

Magnetic correlations in the Hubbard model on triangular and Kagomé lattices.

In order to study the magnetic properties of frustrated metallic systems, we present, for the first time, quantum Monte Carlo data on the magnetic susceptibility of the Hubbard model on triangular and kagomé lattices. We show that the underlying lattice structure determines the nature and the doping dependence of the magnetic fluctuations. In particular, in the doped kagomé case we find strong short-range magnetic correlations, which makes the metallic kagomé systems a promising field for studies of superconductivity.

Journal Article↗
PubMed1994

[Bridging long tibial shaft defects by partially demineralized bone matrix].

The problems arising from the transplantation of autogenic and allogenic bone have significantly limited the use of these methods. Hence, there is an ever increasing demand for suitable transplant materials that could be readily available to orthopaedic surgeons throughout the country. Although the advantages of demineralized bone matrix over allogenic cancellous bone have been shown in numerous experimental studies, its broad clinical application has so far been limited. The purpose of this study was to investigate the osteogenic properties of partially demineralized bone matrix in clinically relevant and realistic conditions. Tibial defects 5 cm in length in 24 merino sheep were bridged by way of medullary nailing and filled with various preparations of bone matrix. Cortical bone displaying poor vascularization and rotation instability of the osteosynthesis ensured extremely difficult testing conditions for the transplant. Postoperatively, the extent of new bone formation was evaluated by means of regular X-ray examinations over a period of 12-20 weeks. In addition, histological, fluorescent-optical and microradiographic examinations of the final specimen were carried out. Good new bone formation regularly followed the transplantation of partially demineralized bone matrix with a particle size of 750 microns. Complete bridging of the defect was achieved when small amounts of bone marrow were added. The use of bone matrix with a smaller or larger particle size did not influence the rate of new bone formation perceptibly.

Animals↗