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Neural Regeneration Research 2025年第5期20卷 1403-1404页

作者： Oliver Kann Lennart soder Babak Khodaie Institute of Physiology and Pathophysiology Heidelberg UniversityHeidelbergGermany Interdisciplinary Center for Neurosciences(IZN) Heidelberg UniversityHeidelbergGermany

The metabolite lactate (L-lactate) can be generated and released by diverse brain cells,including neurons,astrocytes,and oligodendrocytes (Kann,2023;Rae et al.,2024).Lactate production usually requires the degradation of glucose (D-glucose)-and glycogen in astrocytes-to pyruvate by glycolysis and subsequent conversion of pyruvate to lactate by the enzyme lactate dehydrogenase(Figure 1A;Dienel,2019;Rae et al.,2024).

关键词： consequences Figure restoration

Controlling light-with-light without nonlinearity

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Light(science & Applications) 2012年第1期1卷 87-91页

作者： Jianfa Zhang Kevin F macdonald Nikolay I Zheludev Optoelectronics Research Centre&Centre for Photonic Metamaterials University of SouthamptonSouthamptonHampshire SO171BJUK

According to the fundamental Huygens superposition principle,light beams traveling in a linear medium will pass though one another without mutual ***,the field of photonics is based on the premise that controlling light signals with light requires intense laser fields to facilitate beam interactions in nonlinear media,where the superposition principle can be *** we challenge this wisdom and demonstrate that two coherent beams of light of arbitrarily low intensity can interact on a metamaterial layer of nanoscale thickness in such a way that one beam modulates the intensity of the *** show that the interference of beams can eliminate the plasmonic Joule losses of light energy in the metamaterial or,in contrast,can lead to almost total absorption of *** of this phenomenon may lie in ultrafast all-optical pulse-recovery devices,coherence filters and terahertz-bandwidth light-by-light modulators.

关键词： all-optical metamaterial plasmonic

Nonlinear dielectric optomechanical metamaterials

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Light(science & Applications) 2013年第1期2卷 85-89页

作者： Jianfa Zhang Kevin F macdonald Nikolay I Zheludev Optoelectronics Research Centre&Centre for Photonic Metamaterials University of SouthamptonSO171BJUK Centre for Disruptive Photonic Technologies Nanyang Technological UniversitySingapore 637371

We introduce a dielectric photonic metamaterial presenting a giant nonlinear optical response driven by resonant optomechanical *** inherently free of Joule losses,it exhibits optical bistability at intensity levels of less than 0.2 mW mm22 and,furthermore,manifests nonlinear asymmetric transmission with a forward:backward optical extinction ratio of more than 30 dB.

关键词： Metamaterial optical bistability optomechanical

Nearest Neighbor sampling of Point sets Using Rays

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Communications on Applied Mathematics and Computation 2024年第2期6卷 1131-1174页

作者： Liangchen Liu Louis Ly Colin B.macdonald Richard Tsai Department of Mathematics The University of Texas at Austin2515 SpeedwayAustinTX 78712USA Oden Institute for Computational Engineering and sciences The University of Texas at Austin201 E24th StAustinTX 78712USA Department of Mathematics University of British Columbia1984 Mathematics RdVancouverBCV6T1Z2Canada

We propose a new framework for the sampling,compression,and analysis of distributions of point sets and other geometric objects embedded in Euclidean *** approach involves constructing a tensor called the Raysense sketch,which captures nearest neighbors from the underlying geometry of points along a set of *** explore various operations that can be performed on the Raysense sketch,leading to different properties and potential *** information about the data set can be extracted from the sketch,independent of the ray *** integrals on point sets can be efficiently computed using the *** also present several examples illustrating applications of the proposed strategy in practical scenarios.

关键词： Point clouds sampling Classification Registration Deep learning Voronoi cell analysis

THE ROLE OF LONG-TERM EXPERIMENTs IN VALIDATING TRAIT-BAsED APPROACHEs TO ACHIEVING MULTIFUNCTIONALITY IN GRAssLANDs

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Frontiers of Agricultural science and Engineering 2022年第2期9卷 187-196页

作者： Jonathan sTORKEY Andrew J.macdonald Rothamsted Research West CommonHarpendenHertfordshireAL52JQUK

Quantifying the relationships between plant functional traits and ecosystem services has been promoted as an approach to achieving multifunctional grassland systems that balance productivity with other regulating,supporting and cultural *** trade-offs and synergies between traits and services has largely relied on meta-analyses of studies from different systems and *** study demonstrated the value of focused studies of long-term experiments in grassland systems that measure traits and services in the same space and time to better understand the ecological constraints underlying these trade-offs and *** analysis is presented that uses data from the Park Grass Experiment at Rothamsted Research on aboveground productivity,species richness and soil organic carbon stocks to quantify the relationships between these three outcomes and the power of variance in plant functional traits in explaining *** was a trade-off between plots with high productivity,nitrogen inputs and soil organic carbon and plots with high species richness that was explained by a functional gradient of traits that are indicative of contrasting strategies of resource acquisition of resource *** were identified of using functional traits to identify opportunities for mitigating these trade-offs and moving toward more multifunctional systems.

关键词： multifunctional grassland systems Park Grass Experiment soil organic carbon ecosystem service

Design of two-dimensional carbon-nitride structures by tuning the nitrogen concentration

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npj Computational Materials 2020年第1期6卷 562-569页

作者： saiyu Bu Nan Yao Michelle A.Hunter debra J.searles Qinghong Yuan state Key Laboratory of Precision spectroscopy School of Physics and Electronic ScienceEast China Normal University3663 N.Zhongshan RoadShanghai 200062PR China Centre for Theoretical and Computational Molecular science Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQLD 4072Australia College of Teacher Education East China Normal University3663 N.Zhongshan RoadShanghai 200062PR China school of Chemistry and Molecular Biosciences The University of QueenslandBrisbaneQLD 4072Australia

Nitrogen-doped graphene(NG)has attracted increasing attention because its properties are significantly different to pristine graphene,making it useful for various applications in physics,chemistry,biology,and materials ***,the NGs that can currently be fabricated using most experimental methods always have low N concentrations and a mixture of N dopants,which limits the desirable physical and chemical properties.

关键词： dimensional carbon structures

Analysis of Open Access Landscape

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图书情报工作 2005年第12期49卷 6-13页

作者： Helen Doyle Andy Gass debra Lappin Rebecea Kennison Public Library of science 185 Berry street Suite 1300San FranciscoCA 94107USA

This paper is created by bounding 5 editorials of Public Library of science (PLos ) which have written on various aspects of open access. It covers wide range topics of important open access issues, such as from paying for open access to copyright to open access as a public issue, which may be more or less of interest of our audience.

关键词：公共图书馆公开文件文献资料图书馆管理

A database of modeled gridded dry deposition velocities for 45 gaseous species and three particle size ranges across North America

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Journal of Environmental sciences 2023年第5期127卷 264-272页

作者： Leiming Zhang Zhuanshi He Zhiyong Wu Anne Marie macdonald Jeffrey R.Brook shailesh Kharol Air Quality Research Division Science and Technology BranchEnvironment and Climate Change CanadaTorontoON M3H 5T4Canada Department of Chemical Engineering and Applied Chemistry University of TorontoTorontoON M5S 2E4Canada

The dry deposition process refers to the flux loss of an atmospheric pollutant due to uptake of the pollutant by the earth’s *** deposition flux of a chemical species is typically calculated as the product of its surface-layer concentration and its dry deposition velocity(V_(d)).Field measurement based V_(d) data are very scarce or do not exist for many chemical species considered in chemistry transport *** the present study,gaseous and particulate dry deposition schemes were applied to generate a database of hourly V_(d) for 45 gaseous species and three particle size ranges for two years(2016–2017)at a 15 kmby 15 km horizontal resolution across North *** V_(d) of the 45 gaseous species ranged fromsec across the whole domain,with chemical species-dependentmedian(mean)values being in the range of 0.018–1.37 cm/sec(0.05–1.43 cm/sec).The spatial distributions of the two-year average V_(d) showed values higher than 1–3 cm/sec for those soluble and reactive species over certain land *** species have the highest V_(d) over water surfaces,while insoluble but reactive species have the highest V_(d) over *** V_(d) of PM_(2.5) across the whole domain ranged from 0.039 to 0.75 cm/sec with median(mean)value of 0.18(0.20)cm s^(−1),while the mean V_(d) for PM_(2.5)–10 is twice that of PM_(2.5).Uncertainties in the modeled V_(d) are typically on the order of a factor of 2.0 or larger,which needs to be considered when applying the dataset in other studies.

关键词： Air quality modeling Atmospheric pollutant Atmospheric deposition Dry deposition velocity spatiotemporal distribution

Passivity breakdown on 436 ferritic stainless steel in solutions containing chloride

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Journal of Materials science & Technology 2019年第4期35卷 637-643页

作者： Jiaming Wang shengsheng Qian Yanhui Li Digby D.macdonald Yiming Jiang Jin Li Department of Materials science Fudan University Department of Materials science and Engineering University of California at Berkeley Key Laboratory of Thermo-Fluid science and Engineering of MOE Xi'an Jiaotong University

Passivity breakdown on 436 ferritic stainless steel(Fss) has been investigated in solutions containing different concentrations of chloride at 25?C and interpreted in terms of the point defect model(PDM). The measured near-normal distributions of passivity breakdown potentials for 436 Fss under experimental conditions are in good agreement with the calculated results according to the PDM. The linear dependence of breakdown potential on the square root of potential scanning rate, which was described by the PDM,provides the estimation of the critical concentration of condensed vacancies at the metal/film interface,which leads to the passivity breakdown. This value is in good agreement with that calculated from the microstructure properties of the alloy substrate and the barrier layer of the passive film. This study demonstrates the validity of the PDM in describing the passivity breakdown on 436 Fss in NaCl solutions.

关键词： 436 ferrite stainless steel Passivity breakdown Point defect model Chloride ions

selection in monoculture vs. mixture alters plant metabolic fingerprints

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Journal of Plant Ecology 2015年第5期8卷 549-557页

作者： debra Zuppinger-Dingley Dan F.B.Flynn Helmut Brandl Bernhard schmid Institute of Evolutionary Biology and Environmental studies University of ZurichWinterthurerstrasse 190CH-8057 ZurichSwitzerland The Arnold Arboretum of Harvard University 1300 Centre StreetBostonMA 02131USA

Aims In grassland biodiversity experiments,positive biodiversity effects on primary productivity increase over *** research has shown that differential selection in monoculture and mixed-species communities leads to the rapid emergence of monoculture and mix-ture types,adapted to their own biotic *** used eight plant species selected for 8 years in such a biodiversity experiment to test if monoculture and mixture types differed in metabolic pro-files using infrared *** Fourier transform infrared spectroscopy(FTIr)was used to assess metabolic fingerprints of leaf samples of 10 individuals of each species from either monocultures or *** FTIr spectra were analyzed using multivariate procedures to assess(i)whether indi-viduals within species could be correctly assigned to monoculture or mixture history based on the spectra alone and(ii)which parts of the spectra drive the group assignment,*** metabolic groups were subject to differential selection in monocultures *** Findings Plant individuals within each of the eight species could be classified as either from monoculture or mixture selection history based on their FTIr *** metabolic groups were differentially selected in the different species;some of them may be related to defense of patho-gens accumulating more strongly in monocultures than in *** rapid selection of the monoculture and mixture types within the eight study species could have been due to a sorting-out process based on large initial genetic or epigenetic variation within the species.

关键词： biodiversity plant evolution selection FTIr spectroscopy metabolic fingerprint