195 research outputs found
B. Slavchev. Medical care for unmarried pregnant women: current problems.
No full textАдрес за кореспонденция:
Божидар Славчев
СБАЛАГ „Майчин дом”
ул. „Здраве” № 2
1431 СофияИзследвани са проблемите на медицинското обслужване на извънбрачно бременните. Извънбрачната раждаемост се обуславя от редица социално-икономически, семейно-битови, културни, възпитателни, психологични и други фактори. Наложително е подобряването на медикосоциалната помощ за извънбрачно бременните, като се осъществи тяхното ранно обхващане и системно наблюдение.
***** Author studies the medical services for unmarried pregnant women. The extramarital birthrate is determined by a variety of factors: social, economic, family, domestic, cultural, educational, psychological. There is urgent need to improve the medical and social care for unmarried pregnant women by ensuring their early dispensary control and systematic supervision
Archaeological monitoring of dredging works for the construction of “Gaztrade” SA port in Beloslav lake
No full textBetween March and December 2019 an archaeological monitoring of the dredging works for the construction of “Gaztrade” SA port was carried out in Beloslav Lake, Varna district (fig. 1). According to the project, a passage (150 m wide, 195–322 m long and 10 m deep) was dug to make a deep waterconnection with the navigable channel linking the Beloslav and Varna lakes (fig. 1.2). The objective of the archaeological monitoring was to make sure no archaeological structures would be affected by this large-scale underwater dredging. The main challenge was to effectively carry out the monitoring and fulfil its objectives while complying with the technology used for hydraulic dredging and pumping the extracted mass on the shore (fig. 1.3). No archaeological structures have been found to be affected by the port construction. Only some stray archaeological materials were recorded and documented: several pottery fragments from different ages, animal bones, pieces of processed wood. None of these archaeological materials could be linked to a specific archaeological site
Seasonal Variation of Essential Oil Yield and Composition of Sage (Salvia officinalis L.) Grown in Castilla - La Mancha (Central Spain)
No full textLinks between phenology, yield and composition of the essential oil of common sage, Salvia officinalis L., grown in Guadalajara (Central Spain) were determined in the different phases of the biological cycle during one year. Data showed an average yield about 1.0%. The analysis of the oil components was carried out by GC-FID and GC/MS. The main oil constituent was alpha thujone (40.1 - 46.5%). Other identified compounds are beta pinene (2.6 - 4.5%), cineole (3.5 - 8.7%), beta thujone (4.1 - 5.6%), camphor (4.1 - 8.0%), borneol (1.3 - 3.7%), alpha humulene (3.8 - 7.3%), viridiflorol (3.4-12.6%) and manool (0.1-4.5%). The highest yield of oil was obtained in the period of full flowering and the highest concentration of alpha thujone in the period of initial flowering
L-form transformation phenomenon in Mycobacterium tuberculosis associated with drug tolerance to ethambutol
No full textAbstractObjective/background: Cell wall-deficient bacterial forms (L-forms) may occur along with resistance to factors that trigger their appearance. It is of interest to study the relationship between the L-form transformation of Mycobacterium tuberculosis and the exhibition of drug tolerance to ethambutol (EMB), an inhibitor of cell wall synthesis. Methods: L-form variant was produced from a sensitive EMB strain of M. tuberculosis through a cryogenic stress treatment protocol and was subsequently cultivated in Middlebrook 7H9 semisolid medium, containing EMB in a minimal inhibitory concentration of 2mg/L. Susceptibility to EMB of the parental strain and its L-form variant was evaluated phenotypically and using polymerase chain reaction-restriction fragment length polymorphism assay targeting a mutation in the embB306 gene fragment. Results: In contrast to the sensitivity to EMB of the parental strain, its L-form variant showed phenotypic resistance to high concentrations of EMB (16mg/L), but the mutation in embB306 was not found. Electron microscopy observation of the L-form variant showed a heterogenic population of bacteria, with different degrees of cell wall deficiency, as well as cells of protoplastic type without cell walls. Of special interest were the observed capsule-like structures around the L-form cells and the biofilm-like matrix produced by the L-form population. Conclusion: We suggest that the expression of phenotypic resistance to EMB in M. tuberculosis can be associated with alterations or loss of cell walls in L-form bacteria, respectively, which results in a lack of a specific target for EMB action. In addition, production of capsule-like structures and biofilm matrix by L-forms could contribute to their resistance and survival in the presence of antibacterial agents
Bulgaria: sea-level change and submerged settlements on the Black Sea
No full textThe Black Sea is recognised as having great potential for the preservation of submerged prehistoric sites because of the large area of land exposed on the continental shelf at lowest sea levels, especially along its western and north-western coastlines. However, very few have been discovered to date, and those that are known are located in Bulgaria. Because of the complexities associated with the periodic isolation of the Black Sea from the Mediterranean and its reconnection, offshore research has tended to focus on geological and geophysical investigation of inundation history, with unresolved and strongly-held disagreements about the timing and rapidity of sea level rise at the end of the Last Glacial and its potential human impact. In Bulgaria, a rich concentration of underwater prehistoric sites has been discovered thanks to dredging activities earlier in the 20th century and a long tradition of underwater archaeological investigations going back to the 1970s. These demonstrate the presence of substantial in situ village settlements of Eneolithic and Early Bronze Age date in shallow water (< 10 m), with excellent preservation of large ceramic assemblages, wooden structures, and faunal and palynological data on palaeodiet and palaeoeconomy. More recently, large scale marine-geological and archaeological projects have begun, aimed at integrating shallow-water inshore investigations with offshore survey in deeper water
Research on transient thermal process of a friction brake during repetitive cycles of operation
No full textЮридическата литература на Здравко Славчев The Juridical literature of Zdarvko Slavchev
No full textBibliosphere for the first time is presenting the very productive author of legal literature – Zdravko Slavkov. Separate titles are annotated, accompanied with light remarks from the author on topics, related to editing, how are the feelings of Bulgarians towards state and municipal tax administration, are they defrauded; should students visit more often libraries
Attractiveness of leg length: Report from 27 nations
No full textThe leg-to-body ratio (LBR) is a morphological index that has been shown to influence a person's attractiveness. In our research, 3,103 participants from 27 nations rated the physical attractiveness of seven male and seven female silhouettes varying in LBR. We found that male and female silhouettes with short and excessively long legs were perceived as less attractive across all nations. Hence, the LBR may significantly influence perceptions of physical attractiveness across nations. © The Author(s) 2011
Emergence and dispersal of snakes after syntopic hibernation
No full textA communal hibernaculum situated in Southwestern Bulgaria and its adjacent area (4 km in diameter) was studied. Seven snake species used this hibernating den, Malpolon insignitus, Dolichophis caspius, Platyceps najadum, Elaphe quatuorlineata, Telescopus fallax, Vipera ammodytes and Xerotyphlops vermicularis. The emergence of the snakes was related to the rise of daily temperatures. Malpolon insignitus emerged from hibernation earlier in the spring than the other species, and most individuals were the first to leave the hibernaculum. There was a temporal segregation among the basking area in early spring, between the latter species and D. caspius, which were the two most abundant species. These two species also used the same area of the hibernaculum, in contrast to P. najadum and E. quatuorlineata, which used a different area. After spring dispersal, M. insignitus and D. caspius used the same microhabitats during the rest of the active period. The earlier emergence of M. insignitus (and earlier departure from the site) probably reduces the competition for basking sites. The early departure of the species may give advantage in the competition for optimal microhabitats with D. caspius
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