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Biomedical subjects

M Milanov

Publications and source records attributed to M Milanov.

14 recordsLinked to original sources
PubMed1998

Radionuclide accumulation in near-shore sediments along the Bulgarian Black Sea Coast.

The accumulation of radionuclides in Black Sea marine ecosystems was investigated by low level gamma spectrometry. Artificial as well as natural radionuclides were determined in bottom sediments samples from 35 reference locations along the Bulgarian Black Sea coast, evenly distributed from the Rumanian to the Turkish border including the main Black Sea resorts and rivers. The measurement of radionuclides in sea bed sediments was carried out during six consecutive seasons using a HPGe detector. The data obtained show that the nuclide concentrations depend strongly on the sediment nature. Results for sandy sediments are within close range, while those for slime and silt vary to a much greater extent. The radionuclide content in the sandy sediments of the main Black Sea resorts is at the lowest limit of the determined values. Small seasonal changes of radionuclide concentration in sandy sediments were observed while greater variations in slime and silt occur. From the data obtained 134Cs/137Cs and 137Csmeas/137CsChern ratios are calculated to determine the Chernobyl part of the measured 137Cs. The activities determined in the sediments for natural radionuclides correspond to those cited in the literature for natural levels, showing no additional anthropogenic contamination. A data base for the nuclide concentration values was created which will enable the modeling of radionuclide transfers by estimation of their concentration variations, accumulation and influence on the marine ecosystems.

Bulgaria↗
PubMed1990

[Endorectal ultrasonic study of the large intestine (a preliminary report)].

Endorectal ultrasound examination is known mainly as a method of examination of the prostate gland. In this report results are presented of the use of this method in patients with tumors of the rectum or of the adjacent organs, with the purpose of evaluating the relation of the tumor to the intestinal wall. In 7 cases gamma 4 with cancer of the colon and 1 with benign tumor, 1 patient with cancer of the uterine cervix and 1 patient with recurrent tumor in the pararectal space) the results of endorectal ultrasound examination matched the data of the histopathologic examination (in 6 cases) and with the clinical course of the disease (in 1 case) followed up over a period of 5 years. It is suggested that endorectal echography has a place as supplementary method of examination in patients with malignant tumors in the rectal area; the accumulated information will help to choose the therapeutic approach.

Adenocarcinoma↗
PubMed1981

[Endoscopic diagnostic errors in colon cancer].

The results of colonoscopy in 567 patients with malignant tumors of the colon have shown that in 10,0% of cases there were errors in primary endoscopic diagnosis due to inferior examination of the colon, missing of malignant tumors, misinterpretation of the alterations revealed. The authors believe that a single endoscopic examination can not be considered decisive, especially when tumor had been clinically or roentgenologically suspected. Only repeated dynamic observations during 12-14 months with 1-3 month intervals can give final conclusions. The authors believe the thorough early analysis, knowledge of endoscopic symptoms, correct estimation of the data of colonoscopy and biopsy to allow avoiding serious diagnostic errors in future.

Biopsy↗
PubMed1976

[Streptococcosis in chickens. II. Cultural, morphological and biochemical studies of streptococcal strains].

Isolated were a total of 33 Streptococcus strains during two enzootics in adult and young chickens. Their cultural, morphologic, and biochemical aspects were studied in order to elucidate the biotype to which they belonged. Taking into consideration their capacity to ferment trehalose and the fact that they failed to ferment sorbite along with their beta-hemolytic activity, belonging to serologic group C, these Streptococcus cultures were determined as Streptococcus pyogenes hum. C.

Animals↗
PubMed1976

[Some biochemical studies of Listeria monocytogenes strains].

A total of 231 strains of Listeria organisms have been isolated during the last 14 years from adult sheep, lambs, fetuses, and ensilaged forage. Their differentiation have shown that 67 of them belong to the 1 st serotype, 77 -- to 4 c, and 26 have been determined as strains of the 5th serotype. The biochemical study on 170 of the strains have revealed that: more of them, belong to the 1 st, 4 c, and 5 th serotype break down dextrose, trehalose, levulose, salycin, esculin, ramnose, and glycerin. They do not produce hydrogen sulfide and indol, do not liquefy gelatin, and are negative for adonite and inulin. Not all prove catalase-Foges-Proskauer- and methylred--positive.

Animals↗