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  • 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
  • Bacteria
  • INGV  (15)
  • Frontiers Media SA  (14)
  • Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu  (7)
  • Istituto Nazionale di Geofisica e Vulcanologia  (5)
  • American Chemical Society
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  • 1
    Publication Date: 2022-01-31
    Description: Biodegradation mediated by indigenous microbial communities is the ultimate fate of the majority of oil hydrocarbon that enters the marine environment. The aim of this Research Topic is to highlight recent advances in our knowledge of the pathways and controls of microbially-catalyzed hydrocarbon degradation in marine ecosystems, with emphasis on the response of microbial communities to the Deepwater Horizon oil spill in the Gulf of Mexico. In this Research Topic, we encouraged original research and reviews on the ecology of hydrocarbon-degrading bacteria, the rates and mechanisms of biodegradation, and the bioremediation of discharged oil under situ as well as near in situ conditions.
    Keywords: GC1-1581 ; QR1-502 ; Q1-390 ; Biodegradation ; Metagenomics ; oil spill ; metatran ; bacterioplankton ; Bacteria ; Gulf of Mexico ; microbial communities ; hydrocarbon ; Deepwater Horizon
    Language: English
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  • 2
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    Frontiers Media SA
    Publication Date: 2024-04-04
    Description: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact
    Keywords: Bacteria ; Secretion ; Membrane ; Transport ; Protein Complex ; Pathogen ; thema EDItEUR::P Mathematics and Science::PD Science: general issues ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKF Pathology::MKFM Medical microbiology and virology ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSG Microbiology (non-medical)
    Language: English
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  • 3
    Publication Date: 2024-04-05
    Description: During spontaneous food/beverage fermentations, the microbiota associated with the raw material has a considerable importance: this microbial consortium evolves in reason of the nutrient content and of the physical, chemical, and biological determinants present in the food matrix, shaping fermentation dynamics with significant impacts on the ‘qualities’ of final productions. The selection from the indigenous micro-biodiversity of ‘virtuous’ ecotypes that coupled pro-technological and biotechnological aptitudes provide the basis for the formulation of ‘tailored’ starter cultures. In the fermenting food and beverage arena, the wine sector is generally characterized by the generation of a high added value. Together with a pronounced seasonality, this feature strongly contributes to the selection of a large group of starter cultures. In the last years, several studies contributed to describe the complexity of grapevine-associated microbiota using both culture-dependent and culture-independent approaches. The grape-associated microbial communities continuously change during the wine-making process, with different dominances that correspond to the main biotechnological steps that take place in wine. In order to simplify, following a time trend, four major dominances can be mainly considered: non-Saccharomyces, Saccharomyces, lactic acid bacteria (LAB), and spoilage microbes. The first two dominances come in succession during the alcoholic fermentation: the impact of Saccharomyces (that are responsible of key enological step of ethanol production) can be complemented/integrated by the contributions of compatible non-Saccharomyces strains. Lactic acid bacteria constitute the malolactic consortium responsible of malolactic fermentation, a microbial bioconversion often desired in wine (especially in red wine production). Finally, the fourth dominance, the undesired microbiota, represents a panel of microorganisms that, coupling spoilage potential to the resistance to the harsh conditions typical of wine environment, can cause important economic losses. In each of these four dominances a complex microbial biodiversity has been described. The studies on the enological significance of the micro-biodiversity connected with each of the four dominances highlighted the presence of a dichotomy: in each consortia there are species/strains that, in reason of their metabolisms, are able to improve wine ‘qualities’ (resource of interest in starter cultures design), and species/strains that with their metabolism are responsible of depreciation of wine. Articles describing new oenological impacts of yeasts and bacteria belonging to the four main categories above mentioned (non-Saccharomyces, Saccharomycetes, lactic acid bacteria, and spoilage microbes) are welcome. Moreover, in this Research Topic, we encourage mini-review submissions on topics of immediate interest in wine microbiology that link microbial biodiversity with positive/negative effects in wine.
    Keywords: QR1-502 ; Q1-390 ; Wine ; Yeasts ; Microbial Diversity ; Bacteria ; Safety ; alcoholic fermentation ; malolactic fermentation ; grapes ; quality ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSG Microbiology (non-medical)
    Language: English
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  • 4
    Publication Date: 2024-04-05
    Description: The most common quorum sensing (QS) system in Gram-negative bacteria occurs via N-acyl homoserine lactone (AHLs) signals. An archetypical system consists of a LuxI-family protein synthesizing the AHL signal which binds at quorum concentrations to the cognate LuxR-family transcription factors which then control gene expression by binding to specific sequences in target gene promoters. QS LuxR-family proteins are approximately 250 amino acids long and made up of two domains; at the N-terminus there is an autoinducer-binding domain whereas the C-terminus contains a DNA-binding helix-turn-helix (HTH) domain. QS LuxRs display surprisingly low similarities (18-25%) even if they respond to structurally similar AHLs. 95% of LuxRs share 9 highly conserved amino acid residues; six of these are hydrophobic or aromatic and form the cavity of the AHL-binding domain and the remaining three are in the HTH domain. With only very few exceptions, the luxI/R cognate genes of AHL QS systems are located adjacent to each other. The sequencing of many bacterial genomes has revealed that many proteobacteria also possess LuxRs that do not have a cognate LuxI protein associated with them. These LuxRs have been called orphans and more recently solos. LuxR solos are widespread in proteobacterial species that possess a canonical complete AHL QS system as well as in species that do not. In many cases more than one LuxR solo is present in a bacterial genome. Scientists are beginning to investigate these solos. Are solos responding to AHL signals? If present in a bacterium which possesses a canonical AHL QS system are solos an integral part of the regulatory circuit? Are LuxR solos eavesdropping on AHLs produced by neighboring bacteria? Have they evolved to respond to different signals instead of AHLs, and are these signals endogenously produced or exogenously provided? Are they involved in interkingdom signaling by responding to eukaryotic signals? Recent studies have revealed that LuxR solos are involved in several mechanisms of cell-cell communication in bacteria implicating them in bacterial intraspecies and interspecies communication as well as in interkingdom signaling by responding to molecules produced by eukaryotes. LuxR solos are likely to become major players in signaling since they are widespread among proteobacterial genomes and because initial studies highlight their different roles in bacterial communication. This Research Topic allows scientists studying or interested in LuxR solos to report their data and/or express their hypotheses and thoughts on this important and currently understudied family of signaling proteins.
    Keywords: QH301-705.5 ; Q1-390 ; LuxR solos ; Quorum Sensing ; signaling ; AHL ; Bacteria ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences
    Language: English
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  • 5
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    Frontiers Media SA
    Publication Date: 2024-04-05
    Description: Proteins suffer many conformational changes and interactions through their life, from their synthesis at ribosomes to their controlled degradation. Only folded and soluble proteins are functional. Thus, protein folding and solubility are controlled genetically, transcriptionally, and at the protein sequence level. In addition, a well-conserved cellular machinery assists the folding of polypeptides to avoid misfolding and ensure the attainment of soluble and functional structures. When these redundant protective strategies are overcome, misfolded proteins are recruited into aggregates. Recombinant protein production is an essential tool for the biotechnology industry and also supports expanding areas of basic and biomedical research, including structural genomics and proteomics. Although bacteria still represent a convenient production system, many recombinant polypeptides produced in prokaryotic hosts undergo irregular or incomplete folding processes that usually result in their accumulation as insoluble aggregates, narrowing thus the spectrum of protein-based drugs that are available in the biotechnology market. In fact, the solubility of bacterially produced proteins is of major concern in production processes, and many orthogonal strategies have been exploited to try to increase soluble protein yields. Importantly, contrary to the usual assumption that the bacterial aggregates formed during protein production are totally inactive, the presence of a fraction of molecules in a native-like structure in these assemblies endorse them with a certain degree of biological activity, a property that is allowing the use of bacteria as factories to produce new functional materials and catalysts. The protein embedded in intracellular bacterial deposits might display different conformations, but they are usually enriched in beta-sheet-rich assemblies resembling the amyloid fibrils characteristic of several human neurodegenerative diseases. This makes bacterial cells simple, but biologically relevant model systems to address the mechanisms behind amyloid formation and the cellular impact of protein aggregates. Interestingly, bacteria also exploit the structural principles behind amyloid formation for functional purposes such as adhesion or cytotoxicity. In the present research topic we collect papers addressing all the issues mentioned above from both the experimental and computational point of view.
    Keywords: QR1-502 ; Q1-390 ; protein aggregation ; bacterial chaperones ; Bacteria ; Functional amyloids ; protein expression ; Protein Folding ; Prion-like proteins ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSG Microbiology (non-medical)
    Language: English
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  • 6
    Publication Date: 2024-04-05
    Description: According to the World Health Organization (WHO), in 2012 infectious diseases and related conditions account for more than 70% of premature deaths across 22 African countries and estimated 450 000 people worldwide developed multi-drug resistant tuberculosis. This alarming situation, of great public health concern, calls for the urgent development of novel and efficient responding strategies. The employment of important research platforms, such as genomics and proteomics, has contributed significant insight into the mechanisms underlying microbial infection and microbe-host interaction. In this Frontiers Research Topic, we aim to produce a timely and pertinent discussion regarding the current status of “Proteomics of microbial Human pathogens” and the role of proteomics in combating the challenges posed by microbial infection and indeed acquired anti-microbial resistance. As the field of proteomics progressed from 2-DE gel based approaches to modern LC-MS/MS based workflows, remarkable advances have been reported in terms of data quantity and quality. Given the immediate and enormous advantages that high resolution and accurate mass spectrometers have brought to the field, proteomics has now evolved into a robust platform capable of generating large amounts of comprehensive data comparable to that reported previously in genomics studies. For example, detection of the complete yeast proteome has been reported and other small proteomes, such as those of bacteria, are within reach. Mass spectrometry-based proteomics has become an essential tool for biologists and biochemists, and is now considered by many as an essential component of modern structural biology. Additionally, the introduction of high-resolution mass spectrometers has driven the development of various different strategies aimed at accurate quantification of absolute and relative amount of protein(s) of interest. Emerging targeted mass spectrometry methodologies such as; Selected Reaction Monitoring (SRM), Parallel Reaction Monitoring (PRM) and SWATH, are perhaps the latest breakthrough within the proteomics community. Indeed, through a label free approach, targeted mass spectrometry offers an unequalled capability to characterize and quantify a specific set of proteins reproducibility, in any biological sample. Usefully, Aebersold and colleagues have recently generated and validated a number of assays to quantify 97% of the 4,012 annotated Mycobacterium tuberculosis (Mtb) proteins by SRM. As such, the Mtb Proteome library represents a valuable experimental resource that will undoubtedly bring new insight to the complex life cycle of Mtb. Finally, as reviewed recently in Frontiers Research Topic, mass spectrometry-based proteomics has had a tremendous impact on our current understanding of post translational modification (PTM) in bacteria including the key role of PTMs during interaction of pathogenic bacteria and host interactions. We believe that our understanding of microbial Human pathogens has benefited enormously from both 2-DE gel and modern LC-MS/MS based proteomics. It is our wish to produce an integrated discussion surrounding this topic to highlight the existing synergy between these research fields. We envisage this Research Topic as a window to expert opinions and perspectives on the realistic practicalities of proteomics as an important tool to address healthcare problems caused by microbial pathogens.
    Keywords: QR1-502 ; Q1-390 ; Mass Spectrometry ; Proteomics ; infectious diseases ; Bacteria ; pathogen ; Microbes ; Protein posttranslational modifications ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSG Microbiology (non-medical)
    Language: English
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  • 7
    Publication Date: 2024-04-04
    Description: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact
    Keywords: Alzheimer's disease ; Amyloid ; Bacteria ; Infection ; Spirochetes ; Dementia ; Pathogens ; Biofilm ; Senile plaque ; Beta amyloid ; Tau ; Inflammation ; Bacterial amyloid ; HSV1 ; Virus ; thema EDItEUR::P Mathematics and Science::PD Science: general issues ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAN Neurosciences
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  • 8
    Publication Date: 2024-04-05
    Description: This eBook presents all 10 articles published under the Frontiers Research Topic "Evolutionary Feedbacks Between Population Biology and Genome Architecture", edited by Scott V. Edwards and Tariq Ezaz. With the rise of rapid genome sequencing across the Tree of Life, challenges arise in understanding the major evolutionary forces influencing the structure of microbial and eukaryotic genomes, in particular the prevalence of natural selection versus genetic drift in shaping those genomes. Additional complexities in understanding genome architecture arise with the increasing incidence of interspecific hybridization as a force for shaping genotypes and phenotypes. A key paradigm shift facilitating a more nuanced interpretation of genomes came with the rise of the nearly neutral theory in the 1970s, followed by a greater appreciation for the contribution of nonadaptive forces such as genetic drift to genome structure in the 1990s and 2000s. The articles published in this eBook grapple with these issues and provide an update as to the ways in which modern population genetics and genome informatics deepen our understanding of the subtle interplay between these myriad forces. From intraspecific to macroevolutionary studies, population biology and population genetics are now major tools for understanding the broad landscape of how genomes evolve across the Tree of Life. This volume is a celebration across diverse taxa of the contributions of population genetics thinking to genome studies. We hope it spurs additional research and clarity in the ongoing search for rules governing the evolution of genomes.
    Keywords: QK1-989 ; Q1-390 ; Genetic Drift ; intron ; natural selection ; gene ; plant ; vertebrate ; Bacteria ; Sex Chromosomes ; Genome ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PST Botany and plant sciences
    Language: English
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  • 9
    Publication Date: 2023-12-20
    Description: Periodontitis is an infection-induced inflammatory disease of the tooth supporting tissues. Treatment of periodontal diseases and regeneration of the effected tissues can be possible only in the early diagnosis of the disease. If left undiagnosed or untreated, periodontitis leads to irreversible soft and hard tissue destruction and finally to tooth loss. Saliva is known to contain inflammatory mediators, host tissue and cell degradation products as well as microbial metabolites and enzymes, reflecting the health status of the oral cavity. In this topic, in collaboration with the well-known scientists working on the field of salivary diagnostics, we demonstrate evidence on monitoring periodontitis by salivary analysis.
    Keywords: Q1-390 ; RC109-216 ; host response ; Chair-side ; diagnostics ; Periodontal disease ; Salivary ; Bacteria ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general
    Language: English
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  • 10
    Publication Date: 2023-12-21
    Description: In recent years there has been a substantial increase in the number of diseases with the inflammatory component such as such as allergy, asthma, rheumatoid arthritis, inflammatory bowl disease (IBD, which includes ulcerative colitis and Crohn's disease), chronic sinusitis, and many other conditions. The majority of these diseases are multifactorial, with the contribution of genetic and environmental factors. Among the latter, the role of certain microorganisms and viruses in triggering or sustaining the inflammatory process is most controversial. In rheumatoid arthritis, for example, the following bacteria and viruses have been implicated in triggering the disease: Mycoplasma spp., Proteus mirabilis, Escherichia coli, Staphylococcus spp., Bordetella spp., Acinetobacter spp., the parvoviruses, Epstein-Barr virus, and retroviruses. The list of putative microbial triggers of rheumatoid arthritis is still growing, and it becomes essentially impossible to make a causation link between certain infectious agents and the disease. In the light of these disappointing results there are calls for even larger studies with the use of more advanced and large-scale technologies. The primary function of the immune system is the maintenance of body homeostasis and protection against any threats to it via several lines of elaborate and complex immune defense. Given even higher complexity that involves the microbiota and the corresponding host-microbe interaction, the conditions for this equilibrium become even more challenging. In the absence of a defined pathogen, for example, the spectrum of microorganisms involved in triggering inappropriate immune responses may include polymicrobial communities or the cumulative effect of several microbial/viral factors. Under the normal circumstances there is a fine-tuned balance between commensal microbiota and the host’s immune responses. However, when this balance is compromised, for example in IBD, a massive immune response is launched against commensal microbiota resulting in chronic inflammation. Besides the microbial/viral factors, the balance of the immune system can be compromised by other causes. Given, for example, the close and inclusive interaction of the immune, nervous and endocrine systems, the list of these provoking factors can expand even more. For instance, it has been demonstrated that even mild sleep deprivation may increase the production of interleukin-6 and C-reactive protein. Understanding the complex role of microbial and environmental factors in inflammatory and autoimmune diseases, therefore, is the main subject of this topic.
    Keywords: R5-920 ; RC581-607 ; QR1-502 ; Q1-390 ; environment ; Autoimmune ecology ; Silica exposure ; Rheumatoid arthritis ; Viruses ; Bacteria ; bic Book Industry Communication::M Medicine
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  • 11
    Publication Date: 2024-04-05
    Description: Post-translational modifications (PTMs) are widely employed by all living organisms to control the enzymatic activity, localization or stability of proteins on a much shorter time scale than the transcriptional control. In eukarya, global analyses consistently reveal that proteins are very extensively phosphorylated, acetylated and ubiquitylated. Glycosylation and methylation are also very common, and myriad other PTMs, most with a proven regulatory potential, are being discovered continuously. The emergent picture is that PTM sites on a single protein are not independent; modification of one residue often affects (positively or negatively) modification of other sites on the same protein. The best example of this complex behavior is the histone “bar-code” with very extensive cross-talk between phosphorylation, acetylation and methylation sites. Traditionally it was believed that large networks of PTMs exist only in complex eukaryal cells, which exploit them for coordination and fine-tuning of various cellular functions. PTMs have also been detected in bacteria, but the early examples focused on a few important regulatory events, based mainly on protein phosphorylation. The global importance (and abundance) of PTMs in bacterial physiology was systematically underestimated. In recent years, global studies have reported large datasets of phosphorylated, acetylated and glycosylated proteins in bacteria. Other modifications of bacterial proteins have been recently described: pupylation, methylation, sirtuin acetylation, lipidation, carboxylation and bacillithiolation. As the landscape of PTMs in bacterial cells is rapidly expanding, primarily due to advances of detection methods in mass spectrometry, our research field is adapting to comprehend the potential impact of these modifications on the cellular physiology. The field of protein phosphorylation, especially of the Ser/Thr/Tyr type, has been profoundly transformed. We have become aware that bacterial kinases phosphorylate many protein substrates and thus constitute regulatory nodes with potential for signal integration. They also engage in cross-talk and eukaryal-like mutual activation cascades. The regulatory potential of protein acetylation and glycosylation in bacteria is also rapidly emerging, and the cross-talk between acetylation and phosphorylation has been documented. This topic deals with the complexity of the PTM landscape in bacteria, and focus in particular on the physiological roles that PTMs play and methods to study them. The topic is associated to the 1st International Conference on Post-Translational Modifications in Bacteria (September 9-10, 2014, Göttingen, Germany).
    Keywords: QR1-502 ; Q1-390 ; Infection ; Phosphorylation ; Hydroxylation ; Protein Kinases ; S-thiolation ; Proteomics ; Bacteria ; Dehydration ; N-glycosylation ; antimicrobial peptides ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSG Microbiology (non-medical)
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  • 12
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    Frontiers Media SA
    Publication Date: 2024-04-05
    Description: DNA replication, a central event for cell proliferation, is the basis of biological inheritance. Complete and accurate DNA replication is integral to the maintenance of the genetic integrity of organisms. In all three domains of life, DNA replication begins at replication origins. In bacteria, replication typically initiates from a single replication origin (oriC), which contains several DnaA boxes and the AT-rich DNA unwinding element (DUE). In eukaryotic genomes, replication initiates from significantly more replication origins, activated simultaneously at a specific time. For eukaryotic organisms, replication origins are best characterized in the unicellular eukaryote budding yeast Saccharomyces cerevisiae and the fission yeast Schizosaccharomyces pombe. The budding yeast origins contain an essential sequence element called the ARS (autonomously replicating sequence), while the fission yeast origins consist of AT-rich sequences. Within the archaeal domain, the multiple replication origins have been identified by a predict-and-verify approach in the hyperthermophilic archaeon Sulfolobus. The basic structure of replication origins is conserved among archaea, typically including an AT-rich unwinding region flanked by several short repetitive DNA sequences, known as origin recognition boxes (ORBs). It appears that archaea have a simplified version of the eukaryotic replication apparatus, which has led to considerable interest in the archaeal machinery as a model of that in eukaryotes. The research on replication origins is important not only in providing insights into the structure and function of the replication origins but also in understanding the regulatory mechanisms of the initiation step in DNA replication. Therefore, intensive studies have been carried out in the last two decades. The pioneer work to identify bacterial oriCs in silico is the GC-skew analysis. Later, a method of cumulative GC skew without sliding windows was proposed to give better resolution. Meanwhile, an oligomer-skew method was also proposed to predict oriC regions in bacterial genomes. As a unique representation of a DNA sequence, the Z-curve method has been proved to be an accurate and effective approach to predict bacterial and archaeal replication origins. Budding yeast origins have been predicted by Oriscan using similarity to the characterized ones, while the fission yeast origins have been identified initially from AT content calculation. In comparison with the in silico analysis, the experimental methods are time-consuming and labor-intensive, but convincing and reliable. To identify microbial replication origins in vivo or in vitro, a number of experimental methods have been used including construction of replicative oriC plasmids, microarray-based or high-throughput sequencing-based marker frequency analysis, two-dimensional gel electrophoresis analysis and replication initiation point mapping (RIP mapping). The recent genome-wide approaches to identify and characterize replication origin locations have boosted the number of mapped yeast replication origins. In addition, the availability of increasing complete microbial genomes and emerging approaches has created challenges and opportunities for identification of their replication origins in silico, as well as in vivo and in vitro. The Frontiers in Microbiology Research Topic on DNA replication origins in microbial genomes is devoted to address the issues mentioned above, and aims to provide a comprehensive overview of current research in this field.
    Keywords: QR1-502 ; Q1-390 ; orisome ; Replication Origin ; Cell-cycle ; Archaea ; origin recognition complex (ORC) ; Bacteria ; DNA Replication ; Replication regulation ; yeast ; Regulatory proteins ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSG Microbiology (non-medical)
    Language: English
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  • 13
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    Frontiers Media SA
    Publication Date: 2023-12-21
    Description: The Nod-like receptor (NLR) family of proteins are evolutionary conserved molecules that in plants and mammals have been implicated in innate immune sensing of microbes and infection-associated physiological changes, contributing to immune protection of the challenged host organism through the instruction of inflammatory responses, antimicrobial defense and adaptive immunity. Recent data however suggests that the biological roles of NLR go beyond the function of classical pattern recognition molecules (PRM) as they have been implicated in essential cellular processes including autophagy, apoptosis, modification of signal transduction and gene transcription as well as reproductive biology. In this research topic, we aim to provide a comprehensive state-of the art overview of the emerging functions of NLR in plant and mammalian immunity, cell biology and reproductive biology. Potential topics may include, but are not limited to the following areas: • Functions of NLRs as PRMs in infection • Cross-talk of NLRs with other PRMs • Signal transduction pathways of NLRs • New functions of NLRs other than pattern recognition • Structural aspects of NLR activation • Mechanisms of NLRs in cell biological processes • Aspects of NLRs in reproductive biology • Functions of NLRs in plant immune responses
    Keywords: R5-920 ; RC581-607 ; Adaptive Immunity ; PAMP ; pathogens ; MAMP ; innate immunity ; Bacteria ; Sensing ; virus ; LRR ; DAMP ; bic Book Industry Communication::M Medicine
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  • 14
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    Frontiers Media SA
    Publication Date: 2024-04-11
    Description: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact
    Keywords: Airborne ; Andean highland ; Bacteria ; fish ; hydrothermal vent ; hot spring ; microorganisms ; Plants ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TC Biochemical engineering::TCB Biotechnology
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  • 15
    Publication Date: 2022-10-31
    Description: Dataset: CTD Profile Casts
    Description: CTD Depth Profile Cast Data for the InVirT-2019-BATS (Bermuda Atlantic Time Series) project taken in the on board of the R/V Atlantic Explorer AE1926 in 2019. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/835593
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1829636
    Keywords: Bermuda Atlantic Time Series ; BATS ; Virus ; Phage ; Metatranscriptomics ; Bacteria ; Diel ; Sargasso Sea
    Repository Name: Woods Hole Open Access Server
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  • 16
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    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Publication Date: 2022-10-31
    Description: Dataset: Coral Associated Microbes on Mo'orean Coral Reefs
    Description: Three species of coral, plus water and sediment, were sampled at 21 sites around the island of Mo’orea, French Polynesia during the dry and rainy seasons in 2017 and 2018. Coral associated microbes (bacteria and archaea) were investigated and their community composition characterized through sequencing of the 16S rRNA gene. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/845039
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1635798, NSF Division of Ocean Sciences (NSF OCE) OCE-1635913
    Keywords: Bacteria ; Archaea ; Moorea Coral Reef LTER ; Holobiont ; Microbiome ; Earth Microbiome Project
    Repository Name: Woods Hole Open Access Server
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  • 17
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    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Publication Date: 2022-10-31
    Description: Dataset: BLOOFINZ-GoM flow cytometry abundance
    Description: Phytoplankton and bacteria abundance from flow cytometry from samples collected in the Gulf of Mexico on R/V Nancy Foster cruises NF1704 and NF1802 in May 2017 and May 2018 For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/835414
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1851558, National Oceanic and Atmospheric Administration (NOAA) NA16NMF4320058
    Keywords: Phytoplankton ; Bacteria ; Prochlorococcus ; Synechococcus ; Gulf of Mexico
    Repository Name: Woods Hole Open Access Server
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  • 18
    Publication Date: 2022-05-27
    Description: © The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Gosselin, K. M., Nelson, R. K., Spivak, A. C., Sylva, S. P., Van Mooy, B. A. S., Aeppli, C., Sharpless, C. M., O’Neil, G. W., Arrington, E. C., Reddy, C. M., & Valentine, D. L. Production of two highly abundant 2-methyl-branched fatty acids by blooms of the globally significant marine cyanobacteria Trichodesmium erythraeum. ACS Omega, 6(35), (2021): 22803–22810, https://doi.org/10.1021/acsomega.1c03196.
    Description: The bloom-forming cyanobacteria Trichodesmium contribute up to 30% to the total fixed nitrogen in the global oceans and thereby drive substantial productivity. On an expedition in the Gulf of Mexico, we observed and sampled surface slicks, some of which included dense blooms of Trichodesmium erythraeum. These bloom samples contained abundant and atypical free fatty acids, identified here as 2-methyldecanoic acid and 2-methyldodecanoic acid. The high abundance and unusual branching pattern of these compounds suggest that they may play a specific role in this globally important organism.
    Description: This work was funded with grants from the National Science Foundation grants OCE-1333148, OCE-1333162, and OCE-1756254 and the Woods Hole Oceanographic Institution (IR&D). GCxGC analysis made possible by WHOI’s Investment in Science Fund.
    Keywords: Lipids ; Alkyls ; Bacteria ; Genetics ; Chromatography
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 19
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    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Publication Date: 2022-10-31
    Description: Dataset: Diatom Matrix RNAseq
    Description: Transcriptome data for bacteria Ruegeria pomeroyi DSS-3, Stenotrophomonas sp. SKA14, Polaribacter dokdonensis MED152, and Dokdonia MED134 collected eight hours after individual inoculation into a diatom Thalassiosira psuedonana culture. The sequence data description for PRHNA448168 is at https://www.ncbi.nlm.nih.gov/bioproject/?term=PRJNA448168. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/818765
    Description: NSF Division of Integrative Organismal Systems (NSF IOS) IOS-1656311
    Keywords: Phytoplankton ; Bacteria ; Co-cultures ; Transcriptomes ; RNAseq
    Repository Name: Woods Hole Open Access Server
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    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Publication Date: 2022-10-31
    Description: Dataset: MO - biogeochemical and microbial field surveys
    Description: Biogeochemical and microbial field surveys from the BATS site, Bermuda from R/V Atlantic Explorer cruises from 2009-2013. This dataset includes water samples collected from 2009-2013 at the Bermuda Hydrostation that were analyzed for DOC, POC, bacterial abundance, leucine, and thymidine incorporation. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/543314
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-0802004
    Keywords: Hydrography ; Bacteria ; Organic matter ; Sargasso Sea
    Repository Name: Woods Hole Open Access Server
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    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Publication Date: 2022-10-31
    Description: Dataset: qPCR
    Description: These data include the quantification of specific microbial taxa within the sediments collected during Integrated Ocean Drilling Program (IODP) Expedition 347: Baltic Sea. DNA was extracted from the interior of frozen whole round cores sampled from Little Belt, Anholt Loch, Landsort Deep, and Bornholm Basin at The University of Tennessee. For a more detailed description of drill sites, access the data set, "IODP-347 drill site locations". Primers specifically targeting the 16S rRNA gene of bacteria, archaea, anaerobic methane oxidizers (ANME-1), and Miscellaneous Crenarchaeota Group (MCG; taxonomically reassigned as the Bathyarchaeota phylum of Archaea) were used to assess abundance of these microbial groups. Abundance data was generated using quantitative-PCR (qPCR) and a non-specific, intercalating DNA stain, SYBR Green. Values were compared against a standard curve to generate copies/uL. These data were collected by Alex Shumaker as part of Dr. Karen Lloyd and Dr. Andrew Steen’s project funded by the National Science Foundation entitled, "Quantifying the contribution of the deep biosphere in the marine sediment carbon cycle using deep-sea sediment cores from the Baltic Sea". For a complete list of measurements, refer to the supplemental document 'Field_names.pdf', and a full dataset description is included in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: http://www.bco-dmo.org/dataset/641358
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1431598
    Keywords: qPCR ; Bacteria ; Archaea ; Baltic Sea ; Marine sediment
    Repository Name: Woods Hole Open Access Server
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  • 22
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    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Publication Date: 2022-10-31
    Description: Dataset: Inferno vent plume proteins-Av1
    Description: Proteins identified from the black smoker chimney Inferno hydrothermal vent plume waters at Axial Seamount, an active volcano along the Juan de Fuca Ridge spreading center, were identified using tandem mass spectrometry (MS/MS). These data are reported as Supplementary Table 3 and discussed in the on-line publication “Sulfur oxidizers dominate carbon fixation at a biogeochemical hot spot in the dark ocean” by Mattes, et al., 2013. doi for that publication: 10.1038/ismej.2013.113. This is the first of two replicate datasets. For a complete list of measurements, refer to the supplemental document 'Field_names.pdf', and a full dataset description is included in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: http://www.bco-dmo.org/dataset/627835
    Description: NSF Ocean Sciences (NSF OCE) OCE-1232840
    Keywords: Bacteria ; Proteomics ; Hydrothermal
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  • 23
    Publication Date: 2017-04-04
    Description: The abstracts herein – collected for the 34th Course of the International School of Geophysics, held in Erice, Italy (“Ettore Majorana” Foundation and Centre for Scientific Culture, 25-30 September, 2010) – focus on geophysical, geological and geochemical methods applied to the planning of the soundest energy mix in densely populated countries, where the coexistence of different technologies requires unique underground facilities and resources. In the framework of IEA and EU programmes, where the concepts of “smart grids” and “smart cities” are prevailing, we rather propose the concept of “smart region” planning the use of both underground and surface areas in a new social-energetic paradigm of “zero kilometer” life. The coexistence of geological storage of CO2 and natural gas, geothermics and, possibly, nuclear waste temporary storage (near surface or geological) is today necessary owing to the progressive decrease of space and resources. In this context, the following technologies turn out to be very important: renewables (geothermal energy), nuclear power, clean coal technologies via CO2 Capture and Storage (CCS), Enhanced Oil Recovery (EOR), Enhanced Coal Bed Methane (ECBM), non-conventional gas exploitation, and seasonal storage of natural gas (also for strategic reserves). These technologies have been recently emphasized in Italy by the Ministry of Economic Development and by the Ministry of the Environment and Territory, as well as by research institutions such as INGV and CNR. Key topics addressed during the Course were: • Geological storage and disposal: assessment of available volume and structures. • Subsurface geological resources: management of potential conflicts among various technologies. • Geological site characterization and risk assessment for policy makers and regulators: the role of the energy industry. • New high tech frontiers for geothermal power production. • New concepts in nuclear waste disposal. • Numerical simulation software for geothermal exploration, geological storage and nuclear waste disposal. • Sharing subsurface data coming from oil & gas and geothermal exploration. • High resolution characterization of shallow aquifers and reservoirs: multi-strata exploitation by different energy technologies. • Case histories and natural analogues: “learning by doing” and “acceptable risk” concepts. The 34th Course of the International School of Geophysics is dedicated to students and young contract researchers starting their carreers in a period of energetic-environmental global crisis. Although their scientific contribution is of high quality, they are usually underpaid in public research institutions with respect to volatile staff of some international organizations who, making use of the results of governmentfunded research, make final decisions on low-carbon energy technologies.
    Description: Published
    Description: 1-102
    Description: 1.8. Osservazioni di geofisica ambientale
    Description: N/A or not JCR
    Description: open
    Keywords: deep geothermics ; CO2 and natural gas storage ; radioactive waste disposal ; underground coexistence ; energy mix ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 24
    Publication Date: 2017-04-03
    Description: The last century was dominated by the creation of scientific theories: the newborn Relativistic, Quantum and Cosmological Theories are proper examples. The Earth Sciences followed this trend by proposing the principles of Plate tectonics. On the contrary, the concept of the Expanding Earth was not developed as a commonly accepted paradigm, but was an open field of original investigations, interpretations, and results. This innovative attitude is evident in the di erent interpretations of the Pacific and Indian oceans paleogeographical evolution; in the cosmological or incidental motor of expansion (still to be identified); in the different estimates of the Earth’s radial expansion. This is a positive sign of vitality: we cannot crystallize these ideas in a few postulates from which we may deduce all the answers, and to which we may constrain all data. The Expanding Planet scheme provides a common explanation of several complex and debated issues relating to Paleontology, Paleomagnetism, Geology and Climatology. The Workshop, through oral and poster contributions, will cover a wide range of issues in a field that, although supported by compelling evidence, is still in search of a definite and commonly accepted cause for the expansion. Our final goal is to explore the Expanding Earth concept from di erent scientific perspectives. Some important new entries come from Physics and these can suitably be linked to clues derived from Paleogeography, Paleontology, Life Evolution, Climatology, ... etc. It is perhaps of particular significance that these progresses in Physics, towards a material physical space, will be presented at the Ettore Majorana Centre, considering that the uncle and mentor of Ettore Majorana was Quirino Majorana, a physicist who performed several experiments with a view to revealing the material essence of gravity. A group of non-expansionist researchers in the fields of Geodesy, Oceanography and Seismology, have accepted our invitation to deliver lectures to our community to clarify the limits and show up the new ways that expansionists should consider while building their new interpretations. The Poster session is going to be full of high quality presentations and also of papers by outstanding scientists in absentia, who will not be able to come to Erice. The Workshop should be a forum for sharing ideas and for promoting the convergence of aims, but also given that we are the so-called heretics in Geosciences the birthplace of new and original ideas, possibly destined to become the accepted conceptions in the future. Acknowledgements. The Directors of the Workshop, Stefan Cwojdzi´nski and Giancarlo Scalera, wish to heartily thank Prof. Antonino Zichichi and Prof. Enzo Boschi for their great far-sightedness in accepting and making possible the realization of this Conference at the Ettore Majorana Foundation and Centre for Scientific Culture. They have been confident of a project whose success was not guaranteed in advance. The followers of the expansion tectonics are just a few today and do not have a central and o cial position in academic institutions, but are animated by the inner certainty of being on the right track. This Workshop represents a further encouragement to continue our work on the several di erent aspects of the Expanding Earth concept. The General Director of INGV, Tullio Pepe and the Head of the Cultural Services Fabio Florindo have greatly facilitated the administrative aspects of the event. The organization of the Earth Expansion Evidence meeting would not have been possible without the invaluable collaboration of Silvia Nardi who sometimes with firm hand has assumed the role of vice-directors , and without the important contribution of all the sta of the EMFCSC, supervised by Mrs. Fiorella Ruggiu. We thanks Barbara Angioni, Daniela Riposati, Luigi Innocenzi , Stefano Bucci, Davide Di Luigi, and Alessandro Bannoni, who have kindly and creatively collaborated to the colourful graphics and aesthetic look of the Erices Meeting.
    Description: INGV, Regione Sicilia, Ministero Sviluppo Economico
    Description: Published
    Description: Ettore Majorana Foundation and Centre for Scientific Culture, Erice, Sicily
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: 5.9. Formazione e informazione
    Description: open
    Keywords: Expanding Earth ; 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous ; 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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    Istituto Nazionale di Geofisica e Vulcanologia
    Publication Date: 2017-04-04
    Description: This is the first volume of an international scientific journal that is dedicated to issues of geoethics and geological culture. Its goal is to inform the Italian and international scientific communities about what emerged at the GeoItalia 2011 conference, attended by not only Italian geoscientists. At this conference, the geoscientists questioned their role in society and the responsibilities that they have to assume as scholars of the planet Earth and experts of the territory. They highlighted the need for rediscovery of the cultural values of geology as a science that can contribute to the construction of correct social knowledge, and the need to be aware that geoethics cannot exist without a real awareness among geoscientists of the cultural value of the Earth sciences.
    Description: Published
    Description: 331
    Description: 5.9. Formazione e informazione
    Description: JCR Journal
    Description: open
    Keywords: Geoethics ; Geoetica ; Geological Culture ; Earth Sciences ; Philosophy ; Education ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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  • 26
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    Istituto Nazionale di Geofisica e Vulcanologia
    Publication Date: 2017-04-04
    Description: Prof. Giulio Giorello is amongst the most prominent philosophers of science in Italy and in the world. He is currently Professor of the Philosophy of Science at the University of Milan, Director of the Series ‘Science and Ideas’ (Raffaele Cortina Books Editor), and Literary Journalist of the cultural pages of the Corriere della Sera, one of the most important of the Italian newspapers. In this keynote presentation, in interview form, he talks about the value that the Earth sciences have had through history, framing this group of disciplines in ethical and epistemological terms, and highlighting some important elements that have to be considered in geological activities.
    Description: Published
    Description: 343-346
    Description: 5.9. Formazione e informazione
    Description: JCR Journal
    Description: open
    Keywords: Geoethics ; Geological Culture ; Geoetica ; Giulio Giorello ; Earth Sciences ; Interview ; Philosophy ; Epistemology ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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  • 27
    Publication Date: 2017-04-03
    Description: (extended abstract)
    Description: INGV, Regione Sicilia, Ministero Sviluppo Economico
    Description: Published
    Description: Ettore Majorana Foundation and Centre for Scientific Culture, Erice, Sicily
    Description: 5.9. Formazione e informazione
    Description: open
    Keywords: Inertia ; Physics ; Fluid Dynamics ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous ; 05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Extended abstract
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  • 28
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    Istituto Nazionale di Geofisica e Vulcanologia
    Publication Date: 2017-04-04
    Description: The international debate in the field of geoethics focuses on some of the most important environmental emergencies, while highlighting the great responsibilities of geoscientists, whatever field they work in, and the important social, cultural and economic repercussions that their choices can have on society. The GeoItalia 2009 and 2011 conferences that were held in Rimini and Turin, respectively, and were organized by the Italian Federation of Earth Science, were two important moments for the promotion of geoethics in Italy. They were devoted to the highlighting of how, and with what tools and contents, can the geosciences contribute to the cultural renewal of society. They also covered the active roles of geoscientists in the dissemination of scientific information, contributing in this way to the correct construction of social knowledge. Geology is culture, and as such it can help to dispel misconceptions and cultural stereotypes that concern natural phenomena, disasters, resources, and land management. Geological culture consists of methods, goals, values, history, ways of thinking about nature, and specific sensitivity for approaching problems and their solutions. So geology has to fix referenced values, as indispensable prerequisites for geoethics. Together, geological culture and geoethics can strengthen the bond that joins people to their territory, and can help to find solutions and answers to some important challenges in the coming years regarding natural risks, resources, and climate change. Starting from these considerations, we stress the importance of establishing an ethical criterion for Earth scientists, to focus attention on the issue of the responsibility of geoscientists, and the need to more clearly define their scientific identity and the value of their specificities.
    Description: Published
    Description: 335-341
    Description: 5.9. Formazione e informazione
    Description: JCR Journal
    Description: open
    Keywords: Geoethics ; Education ; History of science ; Public issues ; General (Philosophy of Earth sciences) ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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  • 29
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    Istituto Nazionale di Geofisica e Vulcanologia
    Publication Date: 2017-04-04
    Description: Franco Ferrarotti, Professor emeritus at ‘La Sapienza’ University of Rome; since winning the first Chair in this discipline in Italy in 1961, he has been considered the Father of Italian Sociology. An independent Member of Italian Parliament in the third government (1958-1963), a member of the New York Academy of Sciences, and a ‘visiting Professor’ at many universities in Europe, North America, Russia, Japan and Latin America. Franco Ferrarotti has taught and still teaches in Europe and America, and he has received many awards throughout his career. In this interview, he talks about the social aspects and consequences of Earth sciences studies.
    Description: Published
    Description: 347-348
    Description: 5.9. Formazione e informazione
    Description: JCR Journal
    Description: open
    Keywords: Geoethics ; Geological Culture ; Geoetica ; Social aspects ; Geologists activity ; Scientific information ; Society ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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    Istituto Nazionale di Geofisica e Vulcanologia
    Publication Date: 2017-04-04
    Description: We argue here that the introduction of an ethical code of conduct that follows the example of the Hippocratic Oath of physicians will help geologists to acquire binding awareness of their professional and social responsibilities. The ethical behavior and obligations of modern geologists involve, but are not limited to, the following issues: correct land/ environment use and management; respect of truth and science; and protection of the Earth systems, on both the local and global scales, and therefore, of our well-being. We believe that for geoligists, the explicit acceptance of an ethical code will help to promote: (i) an awareness of their social role, expertise and sense of belonging to a professional community; (ii) an understanding of the expectations of citizens and society; and (iii) cultural growth, with better use of research and implementation of scientific and professional skills. All this should enhance the public recognition of the social mission of geologists, which is essential for the well-being of society. Therefore, we suggest that like in the majority of medical schools, ethical training should be a part of the university curriculum for students in geology.
    Description: Published
    Description: 365-369
    Description: 5.9. Formazione e informazione
    Description: JCR Journal
    Description: open
    Keywords: Geoethics ; Geological Culture ; Geoetica ; Hippocratic Oath ; Geologists ; Social responsibility ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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  • 31
    Publication Date: 2017-04-04
    Description: Red Pompeian paintings, very famous for their deep intensity, are currently suffering from darkening. The origins of this darkening degradation are not clearly identified yet and remain a major issue for curators. In the specific case of cinnabar (HgS)-based red pigment, a photoinduced conversion into black metacinnabar is usually suspected. This work is focused on the blackening of red cinnabar paintings coated on a sparry calcite mortar. Different samples exhibiting different levels of degradation were selected upon visual observations and analyzed by synchrotron-based microanalytical techniques. Atomic and molecular compositions of the different debased regions revealed two possible degradation mechanisms. On one hand, micro X-ray fluorescence elemental maps show peculiar distributions of chlorine and sulfur. On the other hand, X-ray absorption spectroscopy performed at both Cl and S K-edges confirms the presence of characteristic degradation products: (i) Hg- Cl compounds (e.g., corderoite, calomel, and terlinguaite), which may result from the reaction with exogenous NaCl, in gray areas; (ii) gypsum, produced by the calcite sulfation, in black coatings. Metacinnabar is never detected. Finally, a cross section was analyzed to map the in-depth alteration gradient. Reduced and oxidized sulfur distributions reveal that the sulfated black coating consists of a 5-ím-thick layer covering intact cinnabar.
    Description: Published
    Description: 7484-7492
    Description: reserved
    Keywords: Microspectroscopy Analysis ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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  • 32
    Publication Date: 2019-11-04
    Description: A wideband HF simulator has been constructed that is based on a detailed physical model. It can generate an output giving a time realization of the HF wideband channel for any HF carrier frequency and bandwidth and for any given transmitter receiver path, time of day, month and year and for any solar activity/geomagnetic conditions. To accomplish this, a comprehensive solution has been obtained to the problem of HF wave propagation for the most general case of a 3D inhomogeneous ionosphere with time-varying electron density fluctuations. The solution is based on the complex phase method (Rytov s method), which has been extended to the case of an inhomogeneous medium and a point source of the field. Results of simulation obtained according to the technique developed have been presented, calculated for a single-hop path 1000 km long oriented to the south from St. Petersburg and including a horizontal electron density gradient present in the IRI model used as the basis of the ionosphere model. The fluctuations of the ionospheric electron density were characterized by an inverse power law anisotropic spatial spectrum. For this model, the random walk of the phasor at the receiver is determined and shown both for paths reflected in the E- and Fregions, being significantly larger for the latter. The oblique sounding ionogram is constructed and reveals three propagation modes: the E-mode and low and high angle F-mode paths. The time-varying field due to each of these paths is then summed at the receiving location enabling the calculation of the scattering function and also the time realization of the received signal shown as a function of both fast and slow time. This is performed both with and without the presence of the geomagnetic field; in the former case the splitting of the F2-mode into both e- and o-modes is seen. It is also shown how the scattering function can be obtained from the time realization of the channel in a way akin to experimental determination of the scattering function from channel measurements. Results from the simulations show the very significant effect of irregularities of even modest magnitude and the comparative effects due to background ionosphere dispersion and the fluctuating irregularities as well as geomagnetic mode splitting. Since the simulator is based on a physical model, it should be possible by comparison of experimental results and simulation to identify the correspondence between physical parameters (e.g., the variance and anisotropy of the electron density fluctuations, orientation of the propagation path to the magnetic meridian, bulk ionosphere motions) with observed channel parameters (e.g., Doppler spread and shift, time delay spread).
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: 01. Atmosphere::01.02. Ionosphere::01.02.06. Instruments and techniques ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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  • 33
    Publication Date: 2019-11-04
    Description: This paper reviews the history of the study of historical British earthquakes. The publication of compendia of British earthquakes goes back as early as the late 16th Century. A boost to the study of earthquakes in Britain was given in the mid 18th Century as a result of two events occurring in London in 1750 (analogous to the general increase in earthquakes in Europe five years later after the 1755 Lisbon earthquake). The 19th Century saw a number of significant studies, culminating in the work of Davison, whose book-length catalogue was published finally in 1924. After that appears a gap, until interest in the subject was renewed in the mid 1970s. The expansion of the U.K. nuclear programme in the 1980s led to a series of large-scale investigations of historical British earthquakes, all based almost completely on primary historical data and conducted to high standards. The catalogue published by BGS in 1994 is a synthesis of these studies, and presents a parametric catalogue in which historical earthquakes are assessed from intensity data points based on primary source material. Since 1994, revisions to parameters have been minor and new events discovered have been restricted to a few small events.
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: historical earthquakes ; seismicity ; earthquake catalogues ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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    Type: article
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    Publication Date: 2019-11-04
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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  • 35
    Publication Date: 2019-11-04
    Description: In this work, some results of a GPR survey carried out in a 10000 m2 large archaeological site, located in Lecce (Italy) near to a necropolis dating from the Messapian to the Roman imperial age, are reported. After a preliminary survey, performed on the entire area along parallel 1 m spaced profiles using a 200 MHz and a 500 MHz antenna in single-fold continuous mode, some smaller areas were selected, where the survey was repeated decreasing the profile spacing down to 0.50 m for the lower frequency antenna and to 0.25 m for the higher one. For two selected zones (D and B) the processed data were visualized in 3D space not only by the standard time slice technique, but also by two recently proposed approaches, namely by iso-amplitude surfaces of the complex trace amplitude and by 3D projection of energy and envelope stacks. The immediacy in revealing the spatial positioning of highly reflecting bodies, such as the anomaly interpreted as an old refilled cistern in zone D, makes 3D visualization techniques very attractive in archaeological applications of GPR. Their sensitivity to the signal/noise ratio is, on the other hand, highlighted by the quite poor performance in zone B, where the only reliable result provided by all the techniques was the soil/bedrock reflection, whereas none of them could effectively enhance the visibility of weak dipping reflections noted on 2D sections and probably related to fractures or bedding planes in the calcarenitic basement. The performance of the various techniques in these two different situations allowed insights into their main advantages and drawbacks to be gained.
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: ground-penetrating radar ; archaeological investigations ; visualization techniques ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
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  • 36
    Publication Date: 2019-11-04
    Description: Approximately 20 km north-east of Rome, along the modern trace of the Tiburtina road, recent archaeological diggings have brought to light a system of aqueduct galleries constructed by Roman engineers. This site falls inside the Acque Albule Basin, a travertine plateau Upper Pleistocene in age, that has been interpreted as a rhombshaped pull-apart basin created by strike-slip faulting within a N-S shear zone. This study provides evidence that two narrow water channels of this aqueduct system were significantly deformed by tectonic movement that occurred subsequent to their construction (II-III century A.D.). The geometry of the deformation pattern is compatible with that expected for a shear zone bounded by N-S oriented, right-lateral faults. The palaeomagnetic study of the volcanic formation («Pozzolane Rosse» Formation, 457± 4 kyr) containing the Roman aqueduct system evidences significant clockwise rotation around sub-vertical axis, consistent with the above-mentioned tectonic style.
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: palaeomagnetism ; block rotation ; active tectonics ; Rome ; 04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 37
    Publication Date: 2019-11-04
    Description: The Romans built the ancient town of Grumentum during the 3rd century B.C. in the southern part of the Agri high Valley (Basilicata Region, Southern Italy) near the confluence of the Sciaura stream in the Agri River. Now it is one of the most important archaeological sites of Southern Italy. In fact, after a period of wars in this area between Romans and Carthaginians, a great deal of restoration was started in 57 B.C. These works affected the city walls, public buildings and finally endowed the Roman colony with important infrastructures, such as the new aqueduct. In this work, we attempt to reconstruct the ancient layout of the Roman aqueduct of Grumentum. As a starting point, we followed some descriptions from the 19th century, when the structure was still well preserved. Then, we performed a multidisciplinary geophysical approach to the best preserved remains of the aqueduct. In particular, the geophysical investigation started with the use of a portable GPS allowing us to acquire the co-ordinates of the outcropping rests of the ancient structure. Then, we used an optical pumping magnetometer to perform seven gradiometric maps over a broad area of about 8000 m2. From the literature descriptions, dating to the first part of the 19th century, we can deduce that the state of preservation of the Roman aqueduct was much better than the present one. Thus we can hypothesise as the cause of its fast involution the fact that it was located in the epicentral area of the large destructive earthquake which occurred in the Basilicata Region in 1857 (Mallet, 1862). To this aim, we performed a first attempt to correlate the state of preservation of the aqueduct remains with the local seismic amplification by means of the HVSR (Horizontal to Vertical Spectral Ratio) technique. This survey allowed us to obtain the site amplification spectra along the aqueduct layout and assess the fundamental vibration frequency of the investigated structure. The possibility of landslides was ruled out by a careful geological survey. The relationship between aqueduct path and damage should then be attributed to closeness to earthquake seismogenic fault.
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: geoarchaeology ; magnetic prospecting ; HVSR investigation ; seismogenic fault ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 38
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    INGV
    Publication Date: 2019-11-04
    Description: In August 2001, Annali di Geofisica, 44 (4), pp. 659-669, published the paper: «Anomalous directional behaviour of the real parts of the induction arrows in the Eastern Alps: tectonic and palaeogeographic implications» written by Marcus Gurk and Pierre-André Schnegg. Concerning this paper we have two brief comments.
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 39
    Publication Date: 2019-11-04
    Description: Scientific letters, of great importance in the history of science and scientific instrumentation, have a particular importance for those sectors of earth sciences in which structured observation networks are distributed across the territory, such as seismology, meteorology, geomagnetism and astronomy. It may come as a surprise to know that in the historical scientific letter collections there can be information having a certain scientific novelty. The current scientific relevance for seismology of the content of some historical letters is one of the aspects that most of all motivate an investment into this kind of research, more by the seismologists than by the historians of science. The experiences conducted up until now within the TROMOS project (INGV-SGA)framework have led us to identify the following types of information: description on the effects of seismic events; scientific comments to theories,to publications, etc.; graphs; reproductions of seismograms; news of loans of recordings;information and drawings of instruments, their location and orientation within the observatories.
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 40
    Publication Date: 2019-11-04
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 41
    Publication Date: 2019-11-04
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 42
    Publication Date: 2019-11-04
    Description: The 346 A.D. earthquake is known through sparse historical sources. It is mentioned by Hyeronimus as felt in Rome and responsible for damage in the ancient Campania Province. Four epigraphs report the earthquake as the cause for the restorations of buildings at Aesernia-Isernia, Allifae-Alife, Telesia-Telese and Saepinum-Sepino. On this basis, an area possibly struck by the earthquake was already defined in the literature. Another seventeen epigraphs mentioning restoration or re-building of edifices in localities of central-southern Italy (without explicitly referring to the earthquake as the cause of the damage) are possibly related to the earthquake effects. We tried to enhance our knowledge on the 346 earthquake through archaeoseismological analyses. The investigation has benefited from specific fieldwork during archaeological excavations and a critical review of the available archaeological literature. However, a correct archaeoseismological interpretation is hindered by the occurrence of two earthquakes (346 and 375 A.D.) in a short time span and in adjacent areas (whose effects may be archaeo-chronologically undistinguishable) and the not always univocal evidence of the seismic origin of the detected collapses or restoration of structures. For this reason we propose a representation of the 346 A.D. effects through two extreme pictures: 1) the localities for which conclusive data on the earthquake effects are available and 2) the data of point 1 plus the localities for which archaeoseismological data consistent with the earthquake are available. The latter view defines an area of possible damage related to the 346 event larger than that previously known. In particular, the earthquake damage may result from a seismic sequence similar to that, which struck a part of the central and the southern Apennines in 1456, or from an event comparable to that which occurred in 1805, responsible for widespread damage in the northern sector of the southern Apennines.
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: archaeoseismology ; 346 A.D. earthquake ; 04. Solid Earth::04.06. Seismology::04.06.05. Historical seismology ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 43
    Publication Date: 2019-11-04
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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