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Using remotely sensed and climate data to predict the current and potential future geographic distribution of a bird at multiple scales: the case of Agelastes meleagrides, a western African forest endemic

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Avian Research 2019年第3期10卷 262-270页

作者： Benedictus Freeman Daniel jiménez-García Benjamin Barca Matthew Grainger Biodiversity Institute University of KansasLawrenceKS 66045USA Centro de Agroecoloía y Ambiente Instituto de CienciasBenemérita Universidad Autónoma de PueblaPueblaPueblaMexico Royal Society for the Protection of Birds Gola Rainforest National ParkKailahunSierra Leone School of Natural and Environmental Sciences Newcastle UniversityNewcastle upon Tyne NE1 7RUUK

Background:Understanding geographic distributions of species is a crucial step in spatial planning for biodiversity conservation, particularly as regards changes in response to global climate *** information is especially important for species of global conservation concern that are susceptible to the effects of habitat loss and climate change. In this study, we used ecological niche modeling to assess the current and future geographic distributional potential of *** Guineafowl (Agelastes meleagrides)(Vulnerable) across West Africa. Methods:We used primary occurrence data obtained from the Global Biodiversity Information Facility and national parks in Liberia and Sierra Leone, and two independent environmental datasets (Moderate Resolution Imaging Spectroradiometer normalized difference vegetation index at 250 m spatial resolution, and Worldclim climate data at 2.5' spatial resolution for two representative concentration pathway emissions scenarios and 27 general circulation models for 2050) to build ecological niche models in Maxent. Results: From the projections, *** Guineafowl showed a broader potential distribution across the region compared to the current IUCN range estimate for the species. Suitable areas were concentrated in the Gola rainforests in northwestern Liberia and southeastern Sierra Leone, the *** corridor in southeastern Liberia and southwestern Cote d'lvoire, and the Nimba Mountains in northern Liberia, southeastern Guinea, and northwestern Cote d'*** *** projections anticipated minimal range shifts in response to climate change. Conclusions: By combining remotely sensed data and climatic data, our results suggest that forest cover, rather than climate is the major driver of the species' current distribution. Thus, conservation efforts should prioritize forest protection and mitigation of other anthropogenic threats (*** pressure) affecting the species.

关键词： Climate change Conservation Conservation planning Ecological niche modeling Species distribution Upper Guinea Forest White-breasted Guineafowl

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Attenuation artifacts in light sheet fluorescence microscopy corrected by OPTiSPIM

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Light(Science & Applications) 2018年第1期7卷 392-404页

作者： Jürgen Mayer Alexandre Robert-Moreno James Sharpe jim Swoger Centre for Genomic Regulation(CRG) The Barcelona Institute of Science and TechnologyDr.Aiguader 8808003 BarcelonaSpain Universitat Pompeu Fabra(UPF) BarcelonaSpain InstitucióCatalana de Recerca i Estudis Avançats(ICREA) Pg.Lluis Companys 2308010 BarcelonaSpain Present address:European Molecular Biology Laboratory(EMBL) Dr.Aiguader 8808003 BarcelonaSpain

Light sheet fluorescence microscopy(LSFM)is rapidly becoming an essential technology for mesoscopic imaging of samples such as embryos and adult mouse ***,LSFM can suffer from optical artifacts for which there is no intrinsic *** attenuation of light due to absorbing material causes“shadow”artifacts along both the illumination and detection *** approaches have been introduced to reduce this problem,including scanning illumination and multi-view ***,neither of these approaches completely eliminates the *** the distribution of the absorbing material is complex,shadows cannot be *** introduce a new approach that relies on multi-modal integration of two very different mesoscopic *** LSFM,optical projection tomography(OPT)can operate in transmission mode to create a voxel map of the 3D distribution of the sample’s optical ***,we demonstrate a hybrid instrument(OPTiSPIM)that can quantify this attenuation and use the information to correct the shadow artifacts of LSFM.

关键词： illumination light absorbing

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Heat transfer in a tapered fluidized bed of biomass particles with pulsed gas flow

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Particuology 2019年第1期17卷 2-14页

作者： Dening Jia Xiaotao Bi C. jim Lim Shahab Sokhansanj Atsushi Tsutsumi Department of Chemical and Biological Engineering The University of British Columbia2360 East MallVancouverBCV6T 1Z3Canada Environmental Sciences Division Oak Ridge National LaboratoryOak RidgeTN 37831USA Collaborative Research Center for Energy Engineering Institute of Industrial ScienceThe University of Tokyo4-6-1 KomabaMeguro-kuTokyo 153-8505Japan

Bed-to-surface heat transfer of pure biomass particles in a pulsed fluidized bed with a tapered bottom section was investigated. Three biomass species — Douglas fir, pine, and switchgrass — were studied under various operating conditions. Their heat transfer coefficients were found to be closely associated with hydrodynamics dominated by gas pulsations. A higher superficial gas velocity generally yielded better gas–solid contact and higher heat transfer rates. A moderately increasing pulsation frequency promoted convective heat transfer of particles but also reduced pulsation intensity, leading to undesired flow behaviours such as channelling and partial defluidization. The study of the pulsation duty cycle revealed that, for cohesive particles, a smaller duty cycle was preferred to generate powerful pulsations to break up inter-particle forces. Moreover, a duty cycle increase allowed higher gas throughput as long as a suitable fluidization was maintained. The addition of finer particles to a coarse fraction increased particle mobility, and subsequently heat transfer, which also explained the higher heat transfer coefficients of switchgrass as it contained more fines compared with fir and pine. Experimental results in the tapered bed were also compared with those of non-tapered geometry where a 10%–20% increase in heat transfer was observed.

关键词： Fluidized bed Gas pulsations Tapered column Heat transfer Biomass

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Effects of the mass and volume shrinkage of ground chip and pellet particles on drying rates

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Particuology 2018年第3期16卷 1-9页

作者： Hamid Rezaei Shahab Sokhansaj C. jim Lim Anthony Lau Xiaotao Bi Chemical and Biological Engineering Department University of British Columbia Vancouver BC V6T 1Z3 Canada Environmental Science Division Oak Ridge National Laboratory Oak Ridge TN 37381 USA

The effects of varying the mass and volume of ground chip and pellet particles on the particle drying rate were analyzed. Samples of whole pellets and chips were hammer milled using a 3.2 mm screen and the ground chip and pellet particles were found to have similar size distributions, although the pellet particles were denser and more spherical than the chip particles. Prior to drying, water was added to the particles to obtain 0.10, 0.30, 0.50, 0.70, and 0.90 moisture contents （on a dry mass basis）. The moistened particles were subsequently dried in a constant temperature thin layer dryer set at 50,100, 150, or 200 ~C under dry pure nitrogen, dry compressed air, or atmospheric air. The chip and pellet particles exhibited similar degrees of shrinkage, but the pellet particles underwent a greater reduction in their bulk volume during drying. It appears that the more spherical pellet particles are prone to shrinkage in more than one direction, whereas the needle-like chip particle shrink only in one direction. A variable radius first order drying model was found to fit the experimental data better than a fixed radius model.

关键词： Moisture loss Particle density Ground chip Ground pellet Particle shrinkage Bulk shrinkage

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Seeing is believing:Stem cells to treat blindness

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Genes & Diseases 2016年第2期3卷 103-104页

作者： Fei Li jim Hu The Editorial Office of Genes&Diseases Chongqing400046China Department of Pathology and Laboratory Medicine The Hospital for Sick ChildrenUniversity of TorontoTorontoONM5G 0A4Canada

The majority of clinical blindness is caused by a loss of transparency of the lens and cornea,largely due to cataracts and corneal *** most common treatment used to restore the transparency is surgical removal of the damaged tissues,followed by transplantation of donated corneal tissue or an artificial ***,these therapies are not without limitations or untoward *** the intricate regulatory signals required for cornea and lens development has made it possible to harness the lineage growth potential of stem cells for cornea repair and lens regeneration,as showcased in two recent studies published in the March 17th issue of Nature.

关键词： Clinical trial Congenital cataract Cornea repair Human iPSCs LEC Lens regeneration

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Interfacial friction effects on sealing performances of elastomer packer

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Petroleum Science 2024年第3期21卷 2037-2047页

作者： Peng-Cheng Wang Ming-Hui Chen jim Jenkinson Yong-Xin Song Li Sun Department of Mechanical Engineering University of HoustonHoustonTX77024USA Guren Nanomaterials Suzhou215127JiangsuChina Department of Marine Engineering Dalian Maritime UniversityDalian116026LiaoningChina

Elastomer sealing performance is of critical importance for downhole tools application including the use of fracturing(Frac)plugs during multi-stage hydraulic *** practice sealing performances of such plugs are normally evaluated through pressure tests,and in numerical simulation studies,maximum contact stress,average contact stress and contact length data are used to determine sealing quality between a packer and *** previous studies,the impact of friction forces on sealing performance is often *** work aims to fill this knowledge gap in determining the influence of friction forces on elastomer packer sealing *** first determined the most appropriate constitutive hyperelastic model for the elastomers used in frac *** we compared analytical calculation results with Finite Element Analysis simulation using a simplified tubular geometry and showed the significant influences on interfacial friction on elastomer packer stress distribution,deformation,and contact stress after *** the demonstration of validity of FEA method,we conducted systematic numerical simulation studies to show how the interfacial friction coefficients can affect the maximum contact stress,average contact stress,contact stress distribution,and maximum mises stress for an actual packer used in plug *** addition,we also demonstrated how the groove in a packer can affect packer deformation and evolvement during setting with the consideration of interfacial *** study underscores the critical role that friction forces play in Frac plug performance and provides a new dimension for optimizing packer design by controlling interfacial interactions at the packer contact surfaces.

关键词： Elastomer seal Friction Sealing performance Contact stress

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A Theoretical Framework for Demystifying the Causes of Dysfunction and Disorder in the Chinese Market Economy:A Weberian Perspective Huangnan

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Fudan Journal of the Humanities and Social Sciences 2020年第2期13卷 259-275页

作者： Huangnan Shen jim XiaoJie Liu Department of Management London School of Economics and Political ScienceLondonUK Department of Economics Sciences PoParisFrance

This paper explores a theoretical framework for demystifying the causes of the dysfunction and disorder of the present Chinese market *** is posited that Max Weber’s classification of the two potentially conflicting ethics he associates with the behaviour of politicians,the ethic of conviction and the ethic of responsibility offers the basis for a more thorough and accurate account of the dysfunction and disorder within China’s current markets and political ***,this paper contends that cultural determinism and neo-institutional economics fail to capture the contextual factors influencing the transition from the Maoist era of state control to contemporary China’s market led economy(following the opening-up of the country since 1978)than a wider reaching Weberian analysis of the contextual factors involved might *** paper proposes that the distinct ethical foundation for the Chinese market economy is based upon the ethic of conviction,which is the continuity of the philosophical underpinnings of the national ideology during the Maoist *** turn,this has led to the distortion of the incentives for firms in China to provide high-quality goods and *** paper also conducts a study of the ethical foundations of the present Chinese economy from the comparative perspectives of Smith’s concept of the market economy and from a Confucian *** this comparative examination,it will be demonstrated that the ethical feature of the modern market economy,stemming from Smith and Confucianism,is based on the ethic of responsibility,which is a mutually opposed concept to the ethic of conviction;therefore,firms whose business ethics are founded upon the ethic of“responsibility”are less prone to deceive consumers as they adhere to a contractual“responsibility”towards the consumer that many Chinese firms still see as of secondary importance as the ethic of“conviction”still dominating the policies,society and culture of the centralist econ

关键词： Moral Foundation Chinese Market Economy Morality of Conviction Morality of Responsibility Weberian Analysis

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The 12th International Symposium on Spermatology

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Asian Journal of Andrology 2015年第4期17卷 519-520页

作者： R John Aitken jim M Cummins Brett Nixon Priority Research Centre in Reproductive Science Discipline of Biological Sciences and HunterMedical Research Institute University of NewcastleNSW 2308 Australia Division of Veterinary andBiomedical Sciences Murdoch University MurdochWA. Australia.

The 12th International Symposium of Spermatology continued the excellent tradition of this meeting since its inception in 1969 when the first Symposium was held in Italy under the Chairmanship of Professor Baccio Baccetti. This unique Symposium is held every 4 years and serves as a beacon for sperm cell biologists from all over the world, regardless of which species, animal or plant, they are working on. This willingness to embrace the fundamental biology of this distinctive cell type without species limitations is one of the hallmarks of this Symposium. For sperm biologists - it is our Olympics. The meeting in Newcastle, NSW brought together around 300 biologists from more than 22 different countries covering North and South America, Africa, Europe, Asia and Australia. Given the considerable distances and high cost involved in travelling to the East Coast of NSW, this was an outstanding outcome. The Symposium featured a series of 31 plenary lectures culminating in the prestigious Thaddeus Mann Memorial Lecture, which was delivered with typical grace and brilliance by Professor Masaru Okabe.

关键词： International Symposium Spermatology

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World Society for Pediatric Infectious Diseases declaration on combating antimicrobial resistance in children

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World Journal of Pediatrics 2018年第6期14卷 523-524页

作者： jim Buttery Yonghong Yang Mike Sharland Department of Infection and Immunity Monash Children’s Hospital246 Clayton RoadClaytonMelbourneVIC 3168Australia Monash University MelbourneVICAustralia Beijing Children’s Hospital Affi liated to Capital Medical University BeijingPeople’s R epublic of China Shenzhen Children’s Hospital ShenzhenPeople’s R epublic of China Pediatric Infectious Diseases Research Group St George’sUniversity of LondonLondonUK

Preface The rise of antimicrobial resistance (AMR) is recognised as a major threat to global health. The United Nations' Sustain-able Development Goals (SDG) do not explicitly address AMR, but many of the targets within the goals depend on effective therapy for infectious diseases. Notably, these include targets 3.1, 3.2, 3.3, and 3.8, relating to the reduc-tion of early life mortality, eradicating ongoing epidemics including AIDS, tuberculosis and malaria, and achieving universal health coverage, as well as targets relating to pov-erty, malnourishment, and education (1)The World Health Organization (WHO) recognised the outstanding importance of AMR by passing a Global Action Plan in 2015 and declar-ing AMR a global priority (2)However, the WHO Global Action Plan on AMR mentions children only twice and to date includes no specific objectives or action points focusing on child health.

关键词： Diseases World Society children

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Small universal simple spiking neural P systems with weights

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Science China(Information Sciences) 2014年第9期57卷 19-29页

作者： ZENG XiangXiang PAN LinQiang PREZ-jimNEZ Mario J. Key Laboratory of Image Processing and Intelligent Control School of AutomationHuazhong University of Science and Technology Department of Computer Science and Artificial Intelligence University of SevillaAvda. Reina Mercedes s/nSevilla 41012Spain

Spiking neural P systems with weights(WSN P systems,for short)are a new variant of spiking neural P systems,where the rules of a neuron are enabled when the potential of that neuron equals a given *** is known that WSN P systems are universal by simulating register ***,in these universal systems,no bound is considered on the number of neurons and *** this work,a restricted variant of WSN P systems is considered,called simple WSN P systems,where each neuron has only one *** complexity parameter,the number of neurons,to construct a universal simple WSN P system is *** is proved that there is a universal simple WSN P system with 48 neurons for computing functions;as generator of sets of numbers,there is an almost simple(that is,each neuron has only one rule except that one neuron has two rules)and universal WSN P system with 45 neurons.

关键词： bio-inspired computing membrane computing P system spiking neural P system universal computing device

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