High Temperature oxidation of Zircaloy-4 was studied in N2–O2–H2O gas mixtures using labelled 18O2, thermogravimetry, Raman imaging and mass spectrometry. Samples were either exposed to N2–18O2–H2O mixtures, or two-stage oxidised first then H216O - N2 16O2 atmospheres. In the pre-transition, diffusion-controlled regime, mostly steam contributes zirconia formation, while nitrogen-catalysed post ...

The anti-pre-S antibody in the samples of sera from normal healthy persons and patients with different clinical types of liver diseases due to hepatitis B virus (HBV) infection was detected by a newly established enzyme-linked immunosorbent assay technique. This test is a blocking assay where anti-pre-S antibody in the patient's serum blocks subsequent addition of horse radish peroxidase-labell...

The aim of this study was to demonstrate the constitutive expression of mitochondrial uncoupling protein 1 (UCP 1) in pure thymocytes using laser scanning confocal microscopic imagery. To that end we probed thymocytes from UCP 1 knock-out and wild-type mice. Mitochondrial location in thymocytes was determined using Mitotracker Red and the nucleus was labelled using Hoescht stain. We demonstrate...

The supervised machine learning approach usually requires a large number of labelled examples to learn accurately. However, labelling can be a costly and time consuming process, especially when manually performed. In contrast, unlabelled examples are usually inexpensive and easy to obtain. This is the case for text classification tasks involving on-line data sources, such as web pages, email an...

The isolation and culture of an enriched population of cells from rat lymph nodes that have several properties of high endothelial cells are described. High endothelial cells synthesize a unique sulphated glycolipid. This macromolecule in high endothelial cells was labelled with 35SO4 prior to cell isolation and was used to identify high endothelial cells after isolation. Collagenase digestion ...

objective : the aim of study was to develop a rapid assay, dye labelled monoclonal antibody assay (dlmaa), using non-radioactive organic synthetic dyes for identification of toxic shock syndrome toxin-1 (tsst-1) producing strains of staphylococcus aureus. materials and methods: the assay protocol required only two simple steps; addition of tsst-1 antigen to a nitrocellulose membrane and then ad...

HE very specialized meiotic events that occur in all sexually reproducing organisms have not been investigated in any great detail by means of high resolution tritium autoradiography. Most of the work so far has been done with animals because of technical difficulties in obtaining uptake of labelled nucleosides in the microsporocytes of plants (TAKATS 1962). LIMA-DE-FARIA (1959, 1961,1962) has ...