Biomedical subjects

L Jordanova

Publications and source records attributed to L Jordanova.

13 recordsLinked to original sources

PubMed2000

Determination of trace metals in high purity gold.

The possibility of using ETAAS or ICP-AES for the determination of trace amounts of Ag, Bi, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Pd, Pt and Sb in pure gold is investigated. The influence of the matrix element on the atomization of the trace analytes is studied and optimal instrumental parameters are defined. An analytical method based on matrix element reductive separation followed by spectrometric determination of trace analytes is proposed as an alternative for the analysis of high purity gold. Advantages and disadvantages of proposed analytical procedures from the viewpoint of achieved repeatability, reproducibility and detection limits and of the duration of analysis are discussed.

Journal Article↗

PubMed2000

Electrothermal atomic absorption spectrometric determination of trace elements in high-purity silver after total and partial reductive separation of the matrix.

A sensitive and reliable ETAAS determination of metal traces in high purity silver after total (Bi, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb) and partial (As, Hg, Sb, Se) separation of the matrix with ascorbic acid is described. The temperature program is optimized for analyte determination in ascorbic acid media and in 1% silver solution.

Journal Article↗

PubMed1997

Prevalence of multiple sclerosis in Bulgaria.

The previously reported prevalence of multiple sclerosis in Bulgaria is considerably lower than that reported for neighbouring countries. The aim of this study was to perform a detailed epidemiological investigation in well-defined populations in this country to obtain an accurate estimate of the frequency of multiple sclerosis. An epidemiological study was conducted in two small areas of the country. All patients with clinically or laboratory-supported, definite multiple sclerosis according to Poser's criteria were personally interviewed. The study was begun in January, 1993 and December 31, 1995 was selected as prevalence day. The prevalence ratio of multiple sclerosis per 100,000 population was 39.3 in the first community and 39.1 in the second. Thus, the prevalence ratio of multiple sclerosis in Bulgaria is not significantly different from that reported in bordering countries.

Adolescent↗

PubMed1996

"A slap in the face for old Mother Nature": Disease, debility, and decay in Huysmans's A Rebours.

Explore the source record for details and available documents.

Environment↗

PubMed1995

The social construction of medical knowledge.

The paper examines some of the ways in which a social constructionist perspective may be useful for social historians of medicine. It outlines the streams of thought that, over the last twenty years or so, have contributed to this perspective. Some of the problems and issues raised by social constructionism are considered. The relationships between the history of science and the history of medicine are discussed in order to clarify the extent to which the latter can and should be modeled on the former. I suggest that social constructionism is useful, partly because it gives weight to ideas, and that there is a potentially fruitful alliance to be considered between the social history of medicine and cultural history.

Historiography↗

PubMed1995