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Temporal niche overlap among insectivorous small mammals

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Integrative Zoology 2011年第4期6卷 375-386页

作者： emerson M.VIEIRA Gabriela PAISE Laboratory of Ecology of Mammals ZoologyUniversity of Vale do Rio dos SinosSão LeopoldoBrazil Graduate Program of Ecology University of CampinasCampinasBrazil

Being active in the same environment at different times exposes animals to the effects of very different environmental factors,both biotic and *** the present study,we used live traps equipped with timing devices to evaluate the potential role of biotic factors(competition and food abundance)on overall overlap in the temporal niche axis of 4 insectivorous small mammals in high-elevation grassland fields(‘campos de altitude’)of southern *** on resources availability(invertebrates),data on animal captures were pooled in 2 seasons:‘scarcity’(June 2001−September 2001)and‘abundance’(November 2001-May 2002)*** tested for non-random structure in temporal niche overlap among the species in each *** species were the rodents Oxymycterus nasutus(Waterhouse,1837),Deltamys sp.,Akodon azarae(Fischer,1829),and the marsupial Monodelphis brevicaudis Olfers,*** studied community was mainly diurnal with crepuscular *** using the Pianka index of niche overlap indicated that the empirical assemblage-wide overlap was not significantly different from randomly generated patterns in the abundance season but significantly greater than expected by chance alone in the scarcity *** the species showed an increase in temporal niche breadth during the abundance season,which appears to be related to longer daylength and high nocturnal *** on both temporal niche overlap and temporal niche breadth were the opposite to those that we were expecting in the case of diel activity patterns determined by competition for dietary ***,we conclude that competition did not seem to be preponderant for determining patterns of temporal niche overlap by the studied community.

关键词： activity patterns Brazil chronoecology community structure competition niche partitioning

Fuzzy ARTMAP neural network for seafloor classification from multibeam sonar data

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High Technology Letters 2006年第2期12卷 219-224页

作者：周兴华 Chen Yongqi Nick emerson Du Dewen The First Institute of Oceanography State Oceanic Administration Qingdao P.R. China The Department of Land Surveying and Geo-Informafics Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong SAR of China

This paper presents a seafloor classification method of multibeam sonar data, based on the use of Adaptive Resonance Theory （ART） neural networks. A general ART-based neural network, Fuzzy ARTMAP, has been proposed for seafloor classification of multibeam sonar data. An evolutionary strategy was used to generate new training samples near the cluster boundaries of the neural network, therefore the weights can be revised and refined by supervised learning. The proposed method resolves the training problem for Fuzzy ARTMAP neural networks, which are applied to seafloor classification of multibeam sonar data when there are less than adequate ground-troth samples. The results were synthetically analyzed in comparison with the standard Fuzzy ARTMAP network and a conventional Bayesian classifier. The conclusion can be drawn that Fuzzy ARTMAP neural networks combining with GA algorithms can be alternative powerful tools for seafloor classification of multibeam sonar data.

关键词： Fuzzy ARTMAP neural network genetic algorithms seafloor classification multibeam sonar

Bugs improve nerve regeneration: fasting-induced, microbiome-derived metabolite enhances peripheral nerve regeneration

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Signal Transduction and Targeted Therapy 2022年第11期7卷 3978-3979页

作者： Zerina Kurtovic Camilla I.Svensson emerson Krock Department.of Physiology and Pharmacology Centre for Molecular MedicineKarolinska InstitutetSolna17177Sweden Kancera AB Karolinska Institutet Science ParkSolna17165Sweden

In a recent study published in Nature,Serger et *** intermittent fasting(IF)to gut microbiome alterations and enhanced peripheral nerve regeneration following injury.1 Fasting has been purported to have neuroregenerative effects,but the underlying mechanisms remained *** authors found that IF-induced elevation of IPA(a microbiome-derived metabolite)promotes neutrophil infiltration into the dorsal root ganglia(DRG),which enhances the regeneration of sciatic nerve fibers(Fig.1).

关键词： connected fibers ported

Cosmopolitan Temporalities： A Sociological Analysis on Climate Imageries in Brazil and China

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Fudan Journal of the Humanities and Social Sciences 2018年第1期11卷 49-68页

作者： Marcelo Fetz Estevao Bosco emerson Palmieri Federal University of Espfrito Santo Av. Fernando Fen'aft 514 GoiabeirasVit6ria-ES 29075-910 Brazil University of Sao Paulo Sao Paulo Brazil State University of Campinas/UNICAMP Campinas Brazil

Time is a central theoretical resource for climate change science, climate policies, social actions addressing climate change problems, and shaping concepts of uncertainty and ambiguity. This paper presents a debate on how different epis- temic climate science communities deal with the concept of time by considering the social construction of climate imageries. To do so, we undertake two case studies on how China and Brazil＇s climate communities have shaped situated knowledge based on different historical social experiences that created different modes of dealing with climate change： China has created a concept of time based on practical climate experiences, while Brazil has developed a futuristic sense of how the climate will behave in the future. Finally, we address the idea of cosmopolitan climate imageries originated from hybrid forums and constructed by stocks of knowledge which have been shared transhistorically by different epistemic communities towards a common climate governance.

关键词： Climate change Time, Social imageries China. Brazil

Metabolic pathways as possible therapeutic targets for progressive multiple sclerosis

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Neural Regeneration Research 2017年第8期12卷 1262-1267页

作者： Rebecca M.Heidker Mitchell R.emerson Steven M.Le Vine Department of Molecular and Integrative Physiology University of Kansas Medical Center Department of Pharmaceutical Sciences College of Pharmacy-Glendale Midwestern University

Unlike relapsing remitting multiple sclerosis, there are very few therapeutic options for patients with progressive forms of multiple sclerosis. While immune mechanisms are key participants in the pathogenesis of relapsing remitting multiple sclerosis, the mechanisms underlying the development of progressive multiple sclerosis are less well understood. Putative mechanisms behind progressive multiple sclerosis have been put forth： insufficient energy production via mitochondrial dysfunction, activated microglia, iron accumulation, oxidative stress, activated astrocytes, Wallerian degeneration, apoptosis, etc. Furthermore, repair processes such as remyelination are incomplete. Experimental therapies that strive to improve metabolism within neurons and glia, e.g., oligodendrocytes, could act to counter inadequate energy supplies and/or support remyelination. Most experimental approaches have been examined as standalone interventions; however, it is apparent that the biochemical steps being targeted are part of larger pathways, which are further intertwined with other metabolic pathways. Thus, the potential benefits of a tested intervention, or of an established therapy, e.g., ocrelizumab, could be undermined by constraints on upstream and/or downstream steps. If correct, then this argues for a more comprehensive, multifaceted approach to therapy. Here we review experimental approaches to support neuronal and glial metabolism, and/or promote remyelination, which may have potential to lessen or delay progressive multiple sclerosis.

关键词： acetyl-coenzyme A carboxylase biotin estrogen iron Kynurenine pathway mitochondria thyroidhormone remyelination stem cells vitamin D

Chronological Age and Performance in Paralympic Powerlifters: Differences Between Sexes, Competition, and Weight Categories

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Journal of Science in Sport and Exercise 2023年第1期5卷 53-61页

作者： João Paulo Lopes-Silva Dillon Richardson emerson Franchini Applied Research Group Performance and Health CESMAC University CenterMaceióAlagoasBrazil International Paralympic Committee(IPC) BonnGermany Sport Department School of Physical Education and SportUniversity of Sao PauloSao PauloBrazil

Purpose We quantified the chronological age and performance of Paralympic powerlifters competing at the elite level in the World Championships(WC)and Paralympic Games(PG),and examined the age-related differences between sexes,weight categories,and competition *** This was a retrospective study involving 3107 athletes who took part in the last eight WC and six *** pow-erlifters were divided by sex,chronological age,weight category,and competition *** Overall,males were older(33 years)and stronger(lifting 168 kg)than female(32 years and lifting 96 kg,respec-tively)para powerlifters(P<0.05).Male and female para powerlifters lifted heavier loads in the PG(174 and 103 kg,respectively)than in WC(163 and 93 kg,respectively)and medallists were younger(31 and 30 years for females and males,respectively)than non-medallists(33 and 32 years for females and males,respectively)(P<0.05).Para powerlifters compet-ing in lighter categories were younger when compared to heavier categories(P<0.05),but their relative load was heavier compared to heavier competitors(P<0.05).Conclusion Our results show that medallists were younger(31 and 30 years)than non-medallists(33 and 32 years)for females and males,respectively.

关键词： Data analysis Para athletes Sports performance Gender

Star power: harnessing the reactive astrocyte response to promote remyelination in multiple sclerosis

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Neural Regeneration Research 2024年第3期19卷 578-582页

作者： Markley Silva Oliveira Junior Laura Reiche emerson Daniele Ines Kortebi Maryam Faiz Patrick Küry Department of Neurology Neuroregeneration laboratoryMedical FacultyHeinrich-Heine-UniversityDüsseldorfGermany Institute of Medical Science University of TorontoTorontoCanada Division of Anatomy Department of SurgeryUniversity of TorontoTorontoCanada

Astrocytes are indispensable for central nervous system development and *** response to injury and disease,astrocytes are integral to the immunological-and the,albeit limited,repair *** this review,we will examine some of the functions reactive astrocytes play in the context of multiple sclerosis and related animal *** will consider the heterogeneity or plasticity of astrocytes and the mechanisms by which they promote or mitigate ***,we will discuss a set of biomedical strategies that can stimulate astrocytes in their promyelinating response.

关键词： astrocytes demyelination drug-based therapies myelin repair oligodendrocyte precursor cells reactive astrogliosis

美的透视爱默生散文选美爱默生 emerson，Ralph Waldo 著

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Influence of ZnO/graphene nanolaminate periodicity on their structural and mechanical properties

1988年

作者：（美）爱默生 emerson Ralph Waldo 佟孝功等译

本书选译《爱默生作品全集》文章8篇。有:《梭罗》、《美国的学者》、《显赫的平民拿破仑》等。

ISBN: (纸本)7540409126

本书选译《爱默生作品全集》文章8篇。有:《梭罗》、《美国的学者》、《显赫的平民拿破仑》等。

关键词：散文地点:美国年代:近代学科:选集

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Journal of Materials Science & Technology 2018年第9期34卷 1487-1493页

作者： Igor Iatsunskyi Margarita Baitimirova emerson Coy Luis Yate Roman Viter Arunas Ramanavicius Stefan Jurga Mikhael Bechelany Donats Erts NanoBioMedical Centre. Adam Mickiewicz University 85 Urnultowska str. 61-614. Poznan Poland Institute of Chemical Physics and Institute of Atomic Physics and Spectroscopy University of Latvia 19 Raina Boulevard LV 1586 Riga Latvia Surface Analysis and Fabrication Platform CIC biomaGUNE Paseo Miramoin 182 20009 Donostia-San Sebastian Spain Department of Physical Chemistry Institute of Chemistry Faculty of Chemistry and Geosciences Vilnius UniversityNaugarduko str. 24 LT-03225 VilniusLithuania Institut Européen des Membranes IEM - UMR 5635 ENSCM CNRS Univ Montpellier Montpellier France

Structural, electronic and mechanical properties of ZnO/Graphene（ZnO/G） nanolaminates fabricated by low temperature atomic layer deposition（ALD） and chemical vapor deposition（CVD） were *** performed scanning and transmission electron microscopy（SEM/TEM）, X-ray diffraction（XRD）, electron energy loss spectroscopy（EELS）, Raman spectroscopy, X-Ray photoelectron spectroscopy（XPS） and nanoindentation to characterize the ZnO/G nanolaminates. The main structural and mechanical parameters of ZnO/G nanolaminates were calculated. The obtained results were analyzed and interpreted taking into account mechanical interaction and charge effects occurring at the G-ZnO interface. The influence of graphene sublayers number on the mechanical behavior of the ZnO/G nanolaminates was studied. By reducing the bilayer thickness, the mechanical parameters of the films can be tuned（Young＇s modulus100-200 GPa, hardness 3-9 GPa）. The softer response of the multilayers as compared to the single layers of ZnO and graphene was attributed to the structural changes in the ZnO layer and the interfaces. This study shows the mechanical behavior of ZnO/G nanolaminates and their influence on the development of novel electro-optical devices based on these structures.

关键词： Nanolaminate Graphene ZnO XPS Nanointendation Multilayers Atomic layer deposition Chemical vapor deposition