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Biostratigraphy versus isotope geochronology: Testing the Urals island arc model

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Geoscience Frontiers 2019年第1期10卷 119-125页

作者： Svetlana Tessalina cristina Talavera Michael E.Pritchin Victor Puchkov John de Laeter Centre for Isotope Research Curtin University The Institute for Geoscience Research (TIGeR) Curtin University School of GeoSciences Institute of Geology and Geochemistry Urals Branch of Russian Academy of Sciences Institute of Geology Ufimian Scientific Investigation Centre

Formation of the Urals volcanic-hosted massive sulphide(VHMS) deposits is considered to be related with the intra-oceanic stage of island arc(s) development in the Upper Ordoviciane Middle Devonian based on the biostratigraphic record of ore-hosting sedimentary rocks. However, the direct Re-Os dating of four known VHMS systems in the Urals gives significantly younger Re-Os isochron ages ranging from355 ± 15 Ma up to 366 ± 2 Ma. To address this discrepancy, we performed SHRIMP U-Pb dating on zircons extracted from rhyodacites(Eifelian biostratigraphic age of 393 -388 Ma) from the footwall of the Alexandrinka VHMS deposit which has a Re-Os isochron age of sulphides of 355 ± 15 *** ^(206) Pb/^(238) U mean age of 374 ± 3 Ma(MSWD ? 1.4 and probability ? 0.11) is considered to be the crystallisation age of the host volcanic rock. This age is ca. 15 Ma younger than the Eifelian(393 -388 Ma)biostratigraphic age and overlaps the Frasniane Famennian boundary(372 ± 2 Ma), characterised by the final stages of Magnitogorsk Arc e East European continent collision. Such an inconsistency with geochronological age may be due to a reburial of conodonts during resedimentation as a result of erosion of older rocks in younger sedimentary sequences.

关键词： Urals Volcanic-hosted massive sulphide deposits U-Pb dating Geochronology

A broad overview of genotype imputation:Standard guidelines,approaches,and future investigations in genomic association studies

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BIOCELL 2023年第6期47卷 1225-1241页

作者： MIRKO TRECCANI ELENA LOCATELLI cristina PATUZZO GIOVANNI MALERBA GMLab Department of NeurosciencesBiomedicine and Movement SciencesUniversity of VeronaVerona37134Italy

The advent of genomic big data and the statistical need for reaching significant results have led genome-wide association studies to be ravenous of a huge number of genetic markers scattered along the whole *** its very beginning,the so-called genotype imputation served this purpose;this statistical and inferential procedure based on a known reference panel opened the theoretical possibility to extend association analyses to a greater number of polymorphic sites which have not been previously assayed by the used *** this review,we present a broad overview of the genotype imputation process,showing the most known methods and presenting the main areas of interest,with a closer look to the most up-to-date approaches and a deeper understanding of its usage in the presentday genomic landscape,shedding a light on its future developments and investigation areas.

关键词： Haplotypes Variant Calling Inference Linkage Analysis NGS

Triassic actinopterygian fishes:the recovery after the end-Permian crisis

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Integrative Zoology 2014年第4期9卷 394-411页

作者： Andrea TINTORI TomažHITIJ Dayong JIANG cristina LOMBARDO Zuoyu SUN Department of Earth Sciences‘A.Desio’ Universitàdegli Studi di MilanoMilanoItaly Dental School Faculty of MedicineUniversity of LjubljanaLjubljanaSlovenia Department of Geology and Geological Museum Beijing UniversityBeijingChina

In the last 15 years,the discovery of several new actinopterygian fish faunas from the Early and Middle Triassic of the Tethys,cast new light on the timing,speed and range of their recovery after the end-Permian *** addition to several new taxa having been described,the stratigraphical and geographical record of many others have been greatly *** fact,most of the new fossiliferous sites are in southern China,thus at the Eastern end of the Tethys,and furthermore a few are somewhat older(Chaohu,Panxian,Luoping)than the major classical Western Tethys sites(Monte San Giorgio).Following these new finds,it is possible to have a better definition of the Triassic recovery ***,after a quite short phase till the end of the Smithian(Olenekian,Early Triassic)in which a rather consistent fauna was present all around the Pangea coasts,a major radiation occurred in the Early-Middle Anisian after the new Middle Triassic fish fauna already appeared in the late Early Triassic,thus occuring well before what was previously supposed from the Alps ***,the new assemblages from southern China point to an early broader differentiation among the basal neopterygians rather than in the‘subholosteans’,the group that was then dominant in the Western Tethys since the Late Ani*** stands that during the Norian a new basal neopterygian radiation gave rise to several new branches that dominated the remaining part of the Mesozoic.

关键词： Actinopterygians biodiversity predation stratigraphy Triassic recovery

Important parameters in plasma jets for the production of RONS in liquids for plasma medicine: A brief review

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Frontiers of Chemical Science and Engineering 2019年第2期13卷 238-252页

作者： Anna Khlyustova Cédric Labay Zdenko Machala Maria-Pau Ginebra cristina Canal Biomaterials Biomechanics and Tissue Engineering GroupDepartment of Materials Science and MetallurgyUniversitat Politecnica de CatalunyaBarcelona 08019Spain Research centre in Multiscale Science and Engineering Universitat Politecnica de CatalunyaBarcelona 08019Spain Faculty of Mathematics Physics and InformaticsComenius UniversityBratislava 84248Slovakia

Reactive oxygen and nitrogen species (RONS) are among the key factors in plasma medicine. They are generated by atmospheric plasmas in biological fluids, living tissues and in a variety of liquids. This ability of plasmas to create a delicate mix of RONS in liquids has been used to design remote or indirect treatments for oncological therapy by treating biological fluids by plasmas and putting them in contact with the tumour;Documented effects include selective cancer cell toxicity, even though the exact mechanisms involved are still under investigation. However, the "right" dose for suitable therapeutical activity is crucial and still under debate. The wide variety of plasma sources hampers comparisons. This review focuses on atmospheric pressure plasma jets as the most studied plasma devices in plasma medicine and compiles the conditions employed to generate RONS in relevant liquids and the concentration ranges obtained. The concentrations of H2O2, NO2^-, NO3^- and short-lived oxygen species are compared critically to provide a useful overview for the reader.

关键词： atmospheric plasma jets liquids ROS RNS plasma-dose

Modeling Biodiversity Benefits and External Costs from a Keystone Predator Reintroduction Policy

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Journal of Mountain Science 2012年第3期9卷 385-394页

作者： Yohan LEE Jane L. HARRISON cristina EISENBERG Byungdoo LEE Department of Forest Ecosystem and Society Oregon State University Corvallis OR 97331 U.S.A Department of Forest Engineering Resources and Management Oregon State University Corvallis OR 97331 U.S.A Korea Forest Research Institute Hoegiro 57 Dongdaemun-gu Seoul 130-712 South Korea

In this paper, an economic model was constructed to determine the optimal wolf population and distribution across the Northern Rocky Mountains. Both ecological and economic concepts were incorporated in an implicitly spatial social welfare maximization problem. This interdisciplinary model relies on multiple data sources, including current wolf population and distribution information, opportunity cost to local landowners, and contingent valuation studies to determine willingness-to-pay for wolves. Economic models tend to externalize ecological concerns and ecological models often omit the complex human dimensions of conservation policy. Accordingly, this model can serve as a guide for integrating best practices from both fields. The model presented here is sufficiently general to apply to wolves in other ecosystems and to other highly interacting species such as beavers and bison. The Northern Rocky Mountain wolf was used as an example of how this economic model works, but this model can be applied far more broadly.

关键词： Wolf Economics Biodiversity Ecological economics Opportunity cost Conservationpolicy Endangered species

Spouting behaviour of binary mixtures in square-based spouted beds

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Particuology 2019年第2期17卷 193-201页

作者： cristina Moliner Filippo Marchelli Massimo Curti Barbara Bosio Giorgio Rovero Elisabetta Arato Department of Civil Chemical and Environmental Engineering (DICCA) University of Genova (UNIGE) Genova Italy Faculty of Science and Technology Free University of Bolzano (UNIBZ) Bolzano Italy Department of Applied Science and Technology (DISAT) Polytechnic University of Turin (POLITO) Turin Italy

From experime nts, the influe nee of the physical characteristics of different bin ary mixtures of solids on the spouting regime of a pyramidal square-based spouted bed reactor is assessed. The applied methodology permits a more precise evaluation of the effects of the tested variables (diameter, density, sphericity) on the response variables (minimum air flows at which spouting begins and at which to maintain spouting con ditions). The associated pressure drops along the bed of particles a nd the height of the formed fountai n are analysed in each case. During the initial stages of fluidisation, binary mixtures containing different density ratios show dead zones. Segregation becomes more evident at large-size and high-density ratios. The lack of sphericity was found to be the main reason leading to blocking, channelling, and start-up problems when system failures occur. Nevertheless, the extent of segregation in all cases decreases with increasing the spouting velocity. In addition, a computational fluid dynamic model based on the discrete element method, previously validated for a single solid bed, is proposed as a tool to predict and evaluate potential segregation phenomena in binary mixtures. This model reproduced with high accuracy the encountered segregation phenomena. Its use may help define the technical limts inherent in the pyramidal spouted bed reactor.

关键词： Spouted bed reactor Segregation Computational fluid dynamics

Benthic diatom community response to metal contamination from an abandoned Cu mine:Case study of the Gromolo Torrent(Italy)

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Journal of Environmental Sciences 2019年第1期31卷 233-246页

作者： Raffaella Tolotti Sirio Consani cristina Carbone Greta Vagge Marco Capello Laura Cutroneo Department of Earth Environment and Life Sciences University of Genoa

Environmental contamination has become a global problem of increasing intensity due to the exponential growth of industrialization. One main debated issue is the metal contamination of rivers receiving Acid Mine Drainage(AMD) from active/abandoned mines. In order to assess the quality of lotic systems, diatoms are commonly used, as their assemblage modifies on the basis of changes in environmental parameters. Benthic diatom changes were analyzed along the metal-impacted Gromolo Torrent(Liguria, NW Italy) with the aim of understanding the effects of input from the abandoned Libiola Cu mine. The results support the hypothesis that metals from AMD lead to massive changes in diatoms, resulting in low biological diversity and in a shift of dominance, passing from the genera Cymbella and Cocconeis to more tolerant and opportunistic species, such as Achnanthidium minutissimum and Fragilaria rumpens. The high concentrations of labile metals, measured through Diffusion Gradients in Thin-films(DGT) immediately downstream of the two AMD inputs in the torrent, corresponded to a sudden decrease in the presence of diatoms, indicating the possible reaching of acute toxic levels. In particular,A. minutissimum dominated the mining area and was positively correlated with Cu and Zn;whereas F. rumpens bloomed downstream of this area, where the metal content was diluted,and was positively correlated with As and Pb. Finally, an important abundance of Nitzschia palea and teratological forms of A. minutissimum and F. rumpens were observed downstream from the mine, indicating that metals may have an important impact on diatoms up to the torrent mouth.

关键词： Benthic diatom community Biomarkers Metal contamination Diatom teratologies Acid Mine Drainage Libiola mine (Liguria,NW Italy)

Aspects of forest restoration and hydrology:the hydrological function of litter

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Journal of Forestry Research 2022年第2期33卷 543-552页

作者： Luara Castilho Pereira Leonardo Balbinot Marcelle Teodoro Lima Julieta Bramorski Kelly cristina Tonello Hydrology in Forest Ecosystems Lab.(Hidrolef) Department of Environmental SciencesFederal University of São Carlos(UFSCar)SorocabaSão PauloBrazil Hydrology in Forest Ecosystems Lab.(Hidrolef) Department of Environmental SciencesFederal University of Amapá(UNIFAP)MacapáAmapáBrazil

Although forests play important roles in the hydrological cycle,there is little information that relates the water retention capacity of litter in areas under passive restoration,especially in Cerrado *** study relates litter levels to water holding capacity and effective water retention among forest fragments under different passive restoration stages:46,11,and 8 years to better understand litter hydrological functions in the *** retention capacity and effective water retention capacity of litters(unstructured materials,branches and leaves)in the field were monitored on a monthly *** litter accumulation at 46 years was significantly higher than that of the other succession *** litter mass was significantly higher than that of leaves and *** 46-year stage had the highest water holding capacity in the leaf fraction,followed by unstructured material and *** the water holding capacity was lower in the oldest resto-ration,this site showed the highest efficiency under field *** process was quickly reestablished,as the 11-year restoration showed results closer to that for the 46-year stage in comparison to the area at 8 ***,passive restoration plays a key role in soil water mainte-nance due to the influence of litter in Cerrado *** and the imminent need of restoring degraded sites,highlight the need for further studies focused on bet-ter understanding of the process of forest restoration and its temporal effect on soil water recovery dynamics.

关键词： Forest hydrology Litter interception Stemflow Cerrado Águas Perenes Forest Water holding capacity

Alpha-synuclein as a biomarker in Parkinson's disease: focus on neural derived extracelluar vesicles

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Neural Regeneration Research 2022年第7期17卷 1503-1504页

作者： cristina Agliardi Franca R.Guerini Mario Meloni Mario Clerici IRCCS Fondazione Don Carlo Gnocchi MilanItaly Department of Pathophysiology and Transplantation University of MilanMilanItaly

The prevalence of Parkinson’s disease(PD)is rapidly increasing,and more than 12 million people are expected to suffer from PD by *** is a highly invalidating neurodegenerative condition that arises from the progressive degeneration of dopaminergic neurons in the substantia nigra pars *** main cause for such degeneration is the formation of cytoplasmic inclusions known as Lewy bodies.

关键词： degeneration Alpha prevalence