Upper protective seam mining has been widely applied in China, but the theory of long-distance multiple upper protective seam mining is not yet perfect. This article highlights the polystore system for integrating large-scale heterogeneous data in the astronomy domain. To address this problem, polystore systems present a new model of data integration and have been proposed to access unrelated data repositories using an uniform single query language. When the archives are published as remote data repositories, it is challenging work to organize the data against their increased diversity and to meet the information demands of users. These mainly consist of images and text without any structure in addition to data with some structure such as relations with key values. Many astronomical studies are producing large-scale archives of data and these archives are then published in the form of data repositories.
These data are now stored in domain-specific archives. Astronomy is also increasingly becoming a science which is now based on a lot of data processing and involves assorted data. The speed with which these data are growing as well as the varied data types involved and stored in scientific archives is posing further challenges. These data are growing in size and thus demand special attention. There is a need in the database management archives to manage such huge volumes of data without any particular structure which comes from unconnected and unrelated sources. Even though multiple models are used for integrating these data, combining such huge amounts of data into a single model remains challenging. The rise of big data has resulted in the proliferation of numerous heterogeneous data stores. For these reasons, in this review, we present an overview of the archaea, bacteria, and fungi present on the Antarctic continent and the surrounding area (maritime Antarctica, sub-Antarctica, Southern Sea, etc.) that have recently been identified using amplicon-based NGS methods. In recent years, amplicon-based next-generation sequencing (NGS) has allowed for a fast and thorough examination of microbial communities to accelerate the efforts of unknown species identification. Additionally, due to its inaccessibility, Antarctica contains a plethora of yet uncultured and unidentified microorganisms with great potential for useful biological activities and production of metabolites, such as novel antibiotics, proteins, pigments, etc. However, recent trends in climate change dictate an unavoidable change in the global biodiversity as a whole, and pristine environments, such as Antarctica, allow us to study and monitor more closely the effects of the human impact. Antarctica represents a unique environment, both due to the extreme meteorological and geological conditions that govern it and the relative isolation from human influences that have kept its environment largely undisturbed.
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