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1. [Proterozoic history and present state of cyanobacteria].

Author

Sergeev VN, Gerasimenko LM, and Zavarzin GA

Subjects
Biological Evolution, Carbonates, Europe, Kazakhstan, Origin of Life, Phosphates, Prokaryotic Cells microbiology, Siberia, Silicates, Cyanobacteria, Environmental Microbiology, Fossils, Geologic Sediments microbiology
Abstract

The paper delves into the main regularities of the distribution of fossil microorganisms in Precambrian rocks, beginning from the Archean Eon about 3.5 billion years ago and ending in the Cambrian Period about 0.5 billion years ago. The paper analyzes facial peculiarities in the lateral differentiation of microfossils in Proterozoic basins and the main stages of temporal changes in fossil cyanobacterial communities, which are based on the irreversible succession of physicochemical conditions on the Earth and the evolution of eukaryotic microorganisms and their incorporation into prokaryotic ecosystems. To gain insight into Proterozoic fossil records, modern stratified cyanobacterial mats built up from layers of prokaryotes are considered. The analysis of phosphatization, carbonatization, and silification processes in modern algal-bacterial communities suggests that analogous processes took place in Proterozoic microbiotas. A comparison of modern and Precambrian living forms confirms the inference that cyanobacterial communities are very conservative and have changed insignificantly both morphologically and physiologically during the past two billion years.

Published
2002

2. Education's Role in Preparing Globally Competent Citizens. BCES Conference Books, Volume 12

Author

Bulgarian Comparative Education Society (BCES), Popov, Nikolay, Wolhuter, Charl, Ermenc, Klara Skubic, Hilton, Gillian,, Ogunleye, James, Chigisheva, Oksana, Popov, Nikolay, Wolhuter, Charl, Ermenc, Klara Skubic, Hilton, Gillian,, Ogunleye, James, Chigisheva, Oksana, and Bulgarian Comparative Education Society (BCES)

Abstract

This volume contains papers submitted to the 12th Annual International Conference of the Bulgarian Comparative Education Society (BCES), held in Sofia and Nessebar, Bulgaria, in June 2014, and papers submitted to the 2nd International Partner Conference, organized by the International Research Centre 'Scientific Cooperation,' Rostov-on-Don, Russia. The volume also includes papers submitted to the International Symposium on Comparative Sciences, organized by the Bulgarian Comparative Education Society in Sofia, in October 2013. The 12th BCES Conference theme is "Education's Role in Preparing Globally Competent Citizens." The 2nd Partner Conference theme is "Contemporary Science and Education: New Challenges -- New Decisions." The book consists of 103 papers, written by 167 authors and co-authors, and grouped into 7 parts. Parts 1-4 comprise papers submitted to the 12th BCES Conference, and Parts 5-7 comprise papers submitted to the 2nd Partner Conference. The 103 papers are divided into the following parts: (1) Comparative Education & History of Education; (2) Pre-service and In-service Teacher Training & Learning and Teaching Styles; (3) Education Policy, Reforms and School Leadership; (4) Higher Education, Lifelong Learning and Social Inclusion; (5) Educational Development Strategies in Different Countries and Regions of the World: National, Regional and Global Levels; (6) Key Directions and Characteristics of Research Organization in Contemporary World; and (7) International Scientific and Educational Cooperation for the Solution of Contemporary Global Issues: From Global Competition to World Integration.

Published
2014