检索结果-南通市图书馆

Competition, cooperation, and parental effects in larval aggregations formed on carrion by communally breeding beetles Necrodes littoralis (Staphylinidae: Silphinae)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2024年第6期31卷 1918-1929页

作者： Natalia Lis anna Mądra-bielewicz Jędrzej Wydra Szymon Matuszewski Department of Animal Taxonomy and Ecology Adam Mickiewicz UniversityPoznańPoland Laboratory of Criminalistics Adam Mickiewicz UniversityPoznańPoland Wielkopolska Centre for Advanced Technologies Adam Mickiewicz UniversityPoznańPoland

Aggregations of juveniles are dominant forms of social life in some insect *** societies are shaped by competitive and cooperative interactions of the larvae,in parallel with parental *** of necrophagous larvae are excellent systems to study these *** littoralis(Staphylinidae:Silphinae),a carrion beetle that colonizes cadavers of large vertebrates,forms massive juvenile *** spreading over carrion anal and oral exudates,the beetles form the feeding matrix,in which the heat is produced and by which adults presumably affect the fitness of the *** predict that exploitative competition shapes the behavior of *** larvae in their ***,cooperative interactions may also operate in these systems due mainly to the benefits of collective ***,indirect parental effects(i.e.,formation of the feeding matrix)probably modulate larval interactions within the *** manipulating parental effects(present/absent)and larval density(0.02−1.9 larvae/g of meat),we found a strong negative group-size effect on fitness components of ***,in colonies with parental effects over almost the entire density range,and in colonies without parental effects for densities larger than 0.5 larva/*** was accompanied by positive group-size effects in terms of development time(it shortened with larval density)and thermogenesis(it increased with larval density).A pronounced positive group-size effect on juvenile fitness was found only in colonies without parental effects and only in the low-density *** results support the hypothesis that larval societies of *** are shaped by exploitation competition.

关键词： carrion group-size effect intraspecific interactions larval societies

A rare neurological manifestation of a malnourished alcohol-dependent acute pancreatitis patient with Marchiafava-Bignami disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Gastroenterology Report 2021年第2期9卷 179-181,I0003页

作者： Maciej Szmygin Joanna bielewicz Krzysztof Pyra anna Szczepanska-Szerej Konrad Rejdak Department of Interventional Radiology and Neuroradiology Medical University of LublinLublinPoland Department of Neurology Medical University of LublinLublinPoland

Introduction Marchiafava-Bignami disease(MBD)is a rare demyelinating disorder,usually associated with heavy chronic alcohol *** may occasionally occur in patients who are not alcoholics but are chronically malnourished and patients with severe nutritional deficiencies[1].White-matter degeneration affects the corpus callosum and results in neurocognitive impairment and dysfunction of the corticobulbar and pyramidal tracts[2].

关键词： degeneration alcohol rare

Erratum to:Competition of insect decomposers over large vertebrate carrion:Necrodes beetles(Silphidae)*** flies(Calliphoridae)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2022年第6期68卷 737-737页

作者： Szymon MATUSZEWSKI anna MA˛DRA-bielewicz Laboratory of Criminalistics Adam Mickiewicz UniversityPoznan 61-809Poland Wielkopolska Centre for Advanced Technologies Adam Mickiewicz UniversityPoznan 61-614Poland

Cyclicity of the Lower Buntsandstein in the eastern part of the Central European Basin:implications for Early Triassic palaeogeography and for geochronological calibration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Palaeogeography 2024年第2期13卷 252-292页

作者： anna Becker Polish Geological Institute-National Research Institute 4 Rakowiecka str.00-975 WarsawPoland

Lower Buntsandstein small—scale cycles recognized in the Central European Basin(CEB) are readily used for astrochronological calibration of the Early Triassic time scales,although they are not well studied *** borehole sections from the eastern part of the CEB,forming a south-north transect perpendicular to the basin axis,were studied in terms to better understand the depositional history of the Lower Buntsandstein developed as the Baltic Formation in the studied Polish part of the *** sedimentary facies were recognized,based on lithological and sedimentological investigations of 655.7 m of drill cores from the Otyń IG 1,Gorzów Wielkopolski IG 1 and Kamień Pomorski IG 1 *** facies can be grouped according to a lithological criterion into facies of predominantly siliciclastic lithology(including 9facies types) and facies of predominantly carbonate lithology(including 2 facies types).Facies analysis allowed to distinguish 8 facies associations of:1) alluvial fan,2) playa,3) sandy-muddy coastal plain,4)embayment and distal delta,5) lagoon,6) sand bars or shoals,7) ooidal shoals or bars,and 8) ***-upward(DC) and shallowing-upward(SC) sedimentary cycles were recognized in parts of the Baltic Formation,with DCs dominating in the southernmost located Otyń IG 1,and SCs dominating in Gorz ow Wielkopolski IG 1,located in the axial part of the *** cycles are very *** statistical significance of the sedimentary cycles is relatively low according to Markov-chain analysis conducted with the phpSedistat software of Stanova et al.(2009).Analysis of small—scale cycles performed on well logs of investigated boreholes and additional boreholes in the vicinity of Otyń IG 1,implementing the earlier study of Becker(2005),showed that the correlation of well-log cycles(GR cycles) and sedimentary cycles is not *** cycles can be roughly correlated with lithological carbonate—siliciclastic cycles(c-s cycles),refle

关键词： Triassic Lower Buntsandstein Cyclicity Central European Basin

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cornea modelling

Eye and Vision 2020年第1期7卷 11-25页

作者： anna Pandolfi Department of Civil and Environmental Engineering Politecnico di MilanoPiazza Leonardo da Vinci 3220133 MilanoItaly

Background:Biomechanics introduces numerous technologies to support clinical practice in ophthalmology,with the goal of improving surgical outcomes and to develop new advanced technologies with minimum impact on clinical ***,a few misconceptions on the way that computational methods should be applied to living tissues contributes to a lack of confidence towards computer-based ***:Corneal biomechanics relies on sound theories of mechanics,including concepts of equilibrium,geometrical measurements,and complex material *** peculiarities of biological tissues require the consideration of multi-physics,typical of the eye environment,and to adopt customized geometrical models constructed on the basis of advanced optical imaging and in-vivo ***:Patient-specific models are able to predict the outcomes of refractive surgery and to exploit the results of in-vivo test to characterize the material properties of the corneal ***:Corneal biomechanics can become an important support to clinical practice,provided that methods are based on the actual multi-physics and use customized geometrical and mechanical models.

关键词： Corneal biomechanics Physiologic configuration Tonometry modelling Refractive surgery modelling

Joint power and spectrum allocation algorithm in cognitive radio networks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2011年第4期22卷 691-701页

作者： anna Auguste Anghuwo Communication Research Center Harbin Institute of Technology

The spectrum sharing problem between primary and cognitive users is mainly investigated. Since the interference for primary users and the total power for cognitive users are constrained, based on the well-known water-filling theorem, a novel one-user water-filling algorithm is proposed, and then the corresponding simulation results are given to analyze the feasibility and validity. After that this algorithm is used to solve the communication utility optimization problem subject to the power constraints in cognitive radio network. First, through the gain to noise ratio for cognitive users, a subcarrier and power allocation algorithm based on the optimal frequency partition is proposed for two cognitive users. Then the spectrum sharing algorithm is extended to multiuser conditions such that the greedy and parallel algorithms are proposed for spectrum sharing. Theory and simulation analysis show that the subcarrier and power allocation algorithms can not only protect the primary users but also effectively solve the spectrum and power allocation problem for cognitive users.

关键词： cognitive radio spectrum sharing water-filling algo-rithm interference constraint communication overhead.

The Rise and Challenges of Literary Sound Studies:An Interview with anna Snaith

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

外国文学研究 2024年第6期46卷 1-11页

作者： Xu Xi anna Snaith English Language and Literature Studies at Beijing Normal University-Hong Kong Baptist University United International College Zhuhai 519000China the Department of English King's College London

anna Snaith is Professor of Twentieth-Century Literature at the Department of English,King's College London.A renowned scholar of Virginia Woolf,she has edited a scholarly edition of The Years for Cambridge University Press,and A Room of One's Own and Three Guineas(Oxford World Classics).Her major publications include Modernist Voyages:Colonial Women Writers in London,1890-1945(Cambridge UP,2014)and an edited collection,Sound and Literature(Cambridge UP,2020).Her research interests include modernist women writers,modernism and colonialism,and literary *** this interview,Snaith answers questions about her recent exploration of literary sound *** talks about how Woolf's writings inspire her attention to sound,concisely introduces the key works and scholars in the field,and discusses the challenges of working on interdisciplinary projects with scholars from diverse *** is important,she believes,to name this field because the literary has conventionally been sidelined in sound *** is crucial for understanding modernism because the modernist era coincided with a revolution in sonic media and *** points out literary scholars can contribute to sound studies by combining close linguistic analysis of the representation of sound with a broader analysis of its cultural and social significance in the world.

关键词： sound studies literary modernism Virginia Woolf noise

Plasma-assisted oxidation of benzoic acid

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2020年第4期14卷 513-521页

作者： anna Khlyustova Nikolay Sirotkin Laboratory of Chemistry of Hybrid Nanomaterials and Supermolecular Systems G.A.Krestov Institute of Solution Chemitry of Russian Academy of SciencesIvanovo 153045Russia

Plasma-assisted oxidation of organic com-pounds is one of the developing technologies for wastewater *** effectively accelerate degradation processes due to plasma generated reactive species and ultra-violet *** of BA in aqueous solutions by the atmospheric pressure glow discharge and underwater diaphragm discharge was studied and monitored by fluorescence and spectrophoto-metric *** type and solution pH affect the formation rates of mono-and dihydroxybenzoic *** derivatives were formed only by glow discharge *** yields of hydroxyl radical were estimated on the kinetics data for the hydroxylation of benzoic *** steps of the hydroxylation processes and further oxidation were described.

关键词： atmospheric pressure glow discharge under-water diaphragm discharge oxidation benzoic acid hydroxyl radical

Each coin has 2 sides: a positive role of alien Potamopyrgus antipodarum (Grey, 1843) snails in reducing the infection of native lymnaeids with trematodes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2024年第2期70卷 262-269页

作者： anna Cichy anna Stanicka Elzbieta Zbikowska Faculty of Biological and Veterinary Sciences Nicolaus Copernicus University in TorunLwowska 187-100 TorunPoland

The change in the distribution of organisms in freshwater ecosystems due to natural or manmade processes raises the question of the impact of alien species on local *** most studies indicate a negative effect,the positive one is more difficult to discern,espe-cially in multispecies systems,including hosts and *** purpose of the study was to check whether the presence of an alien host,Potamopyrgus antipodarum,reduces the intensity of Echinoparyphium aconiatum metacercariae in a native host,Radix *** additionally tested the impact of water temperature and the biomass of the alien host on the dilution *** experimentally studied(1)the lifespan of echinostome cercariae in different temperatures,(2)the infectivity of cercariae toward the alien host and native host,and(3)the impact of different biomass of the alien host on the intensity of metacercariae in the native *** found that cercarial survival and infectivity were tem-perature ***,cercarial survival decreased with increasing temperature,contrary to cercarial *** cercariae entered the renal cavity of both the native host and alien host,and successfully transformed into *** number of metacercariae in the native host decreased with the increasing biomass of the alien *** results indicate that lymnaeids may benefit from the co-occur-rence with P antipodarum,as the presence of additional hosts of different origins may reduce the prevalence of parasites in native ***,the scale of the dilution effect depends not only on the increased spectrum of susceptible hosts but also on the other variables of the environment,including water temperature and host density.

关键词： biological invasion density dilution effect echinostomes Radix spp. temperature.