Thermo-mechanical controlled processing (TMCP) is employed to obtain the required level of mechanical properties of contemporary HSLA steel plates utilized for gas and oil pipeline production. The strength and crack resistance of pipeline steels are mainly determined by its microstructure and crystallographic texture. In this study, the influence of the structural and textural states of industrially produced API-5L X70-X80 pipeline steels on tensile mechanical properties was analyzed.
View Article and Find Full Text PDFBackground: The European Region, certified polio-free in 2002, remains at risk of wild poliovirus reintroduction and emergence of circulating vaccine-derived polioviruses (cVDPV) until global polio eradication is achieved, as demonstrated by the cVDPV1 outbreak in Ukraine in 2015.
Methods: We reviewed epidemiologic, clinical and virology data on cVDPV cases, surveillance and immunization coverage data, and reports of outbreak-related surveys, country missions, and expert group meetings.
Results: In Ukraine, 3-dose polio vaccine coverage declined from 91% in 2008 to 15% by mid-2015.
160 patients with destructive pulmonary tuberculosis of new onset were examined in a tuberculosis hospital. All of them were suspected of being ill with nonspecific bronchial disease after a questionnaire screening. Nonspecific bronchitis was diagnosed in 102 (63.
View Article and Find Full Text PDFA total of 68 children and adolescents suffering from tuberculosis, chronic pneumonia in the phase of exacerbation, pulmonary cysts and hamartochondroma were examined for the phagocytic activity of alveolar macrophages. In pulmonary tuberculosis, the low absorption properties of alveolar macrophages were established in all the phases of a specific process. The patients afflicted with chronic pneumonia were characterized in the phase of exacerbation by discreteness of the parameters of the activity of alveolar macrophages in the bronchoalveolar lavage fluid withdrawn from the focus of inflammation: the absorption activity increased whereas bactericidal one reduced.
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