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The tropical-subtropical evergreen forest transition in East Asia:An exploration

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Plant Diversity 2020年第4期42卷 255-280页

作者： peter Ashton Hua Zhu Arnold Arboretum Harvard UniversityRoyal Botanic GardensKewUK Center for Integrative Biology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesYunnanPR China

The transition from tropical to subtropical(warm temperate)evergreen forests is more clearly apparent in East Asia,fromNepal to the western Pacific coast,than elsewhere in the *** review the nature of this transition and hypothesize the physical,ultimately climatic,factors thatmay maintain it,with a special focus on how the increasing instability and warming of climates will affect these forests.A primary climatic mediator of the transition is proposed,thereby offering a testable hypothesis for the climateeforest transition *** is known of this transition is summarized in context of the primary climatic mediators of elevational zonation of forest formations in equatorial Asia to the tree line,in the Himalaya at the India-Indo-Burma northern tropical margin,and as both elevational and latitudinal zonation in southern *** secondary edaphic and other physical changes are described for the Himalaya,and hypothesized for southern *** forest ecotones are seen to be primarily defined by tree floristic change,on which account changes in structure and physiognomy are *** montane tropical-subtropical transition in the Himalaya is narrowand observed to correlate with an as yet ill-defined frost line.A distinct tropical-subtropical transition forest is recognized in the southwest *** is a total change in canopy species at the Himalayan ecotone,but subcanopy tropical species persist along an elevational decline of c.400 *** latitudinal transition in South China is analogous,but here the tropical subcanopy component extends north over ten degrees latitude,albeit in *** tropical-subtropical transition is uniquely clear in East Asia because here alone a tropical wet summer-dry winter monsoon extends to 35north latitude,encompassing the subtropical evergreen forest,whereas subtropical evergreen forests elsewhere exist under drier temperate summer climate regimes.

关键词： Tropical Subtropical Forest transition Ecotone East Asia

From first fibers to mode-division multiplexing(Invited Paper)

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Chinese Optics Letters 2016年第12期14卷 2-6页

作者： peter J.Winzer Nokia Bell Labs Holmdel NJ 07733 USA

This Review focuses on optical transmission fibers and the high-capacity systems operating thereon. It attempts to combine key lessons learned from the 50-year history of low-loss optical fibers with views on future fiber and systems requirements, discussing likely evolution paths and potential pitfalls in resolving the optical network capacity crunch.

关键词： multiplexing crosstalk likely resolving combine installed learned today coherent deployment

From Persistent Identifiers to Digital Objects to Make Data Science More Efficient

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Data Intelligence 2019年第1期1卷 6-21页

作者： peter Wittenburg Max Planck Computing and Data Facility Gießenbachstraße 285748 GarchingGermany

Data-intensive science is reality in large scientific organizations such as the Max Planck Society,but due to the inefficiency of our data practices when it comes to integrating data from different sources,many projects cannot be carried out and many researchers are *** about 80%of the time in data-intensive projects is wasted according to surveys we need to conclude that we are not fit for the challenges that will come with the billions of smart devices producing continuous streams of data-our methods do not *** experts worldwide are looking for strategies and methods that have a potential for the *** first steps have been made since there is now a wide agreement from the Research Data Alliance to the FAIR principles that data should be associated with persistent identifiers(PID)and metadata(MD).In fact after 20 years of experience we can claim that there are trustworthy PID systems already in broad *** is argued,however,that assigning PIDs is just the first *** we agree to assign PIDs and also use the PID to store important relationships such as pointing to locations where the bit sequences or different metadata can be accessed,we are close to defining Digital Objects(DOs)which could indeed indicate a solution to solve some of the basic problems in data management and *** addition to standardizing the way we assign PIDs,metadata and other state information we could also define a Digital Object Access Protocol as a universal exchange protocol for DOs stored in repositories using different data models and data *** could also associate a type with each DO and a set of operations allowed working on its content which would facilitate the way to automatic processing which has been identified as the major step for scalability in data science and data industry.A globally connected group of experts is now working on establishing testbeds for a DO-based data infrastructure.

关键词： Big data Data management Persistent identifiers Digital objects Data infrastructure Data intensive science

On variations of m, n-simply presented abelian p-groups

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Science China Mathematics 2014年第9期57卷 1771-1784页

作者： DANCHEV peter Department of Mathematics University of Plovdiv

We define a few new classes of p-primary abelian groups,and study their crucial properties,one of which is the so-called Nunke’s-esque *** are also closely related to n-simply presented groups from Keef and Danchev(2... 详细信息

关键词： m n-simply presented groups m n-totally projective groups potentially m n-simply presented groups completely m n-simply presented groups absolutely m n-simply presented groups

Treatment of the later stages of Parkinson’s disease – pharmacological approaches now and in the future

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Translational Neurodegeneration 2015年第1期4卷 17-25页

作者： peter Jenner Neurodegenerative Diseases Research Group Institute of Pharmaceutical SciencesFaculty of Health Sciences and MedicineKing’s CollegeLondon SE11ULUK

The problems associated with the pharmacological treatment of the later stages of Parkinson’s disease(PD)remain those seen over many *** centre on a loss of drug effect(‘wearing off’)with disease progression,the occurrence of dyskinesia,notably with L-dopa use and the appearance of non-motor symptoms that are largely refractory to dopaminergic *** strategies in late PD have been dominated by the use of drug combinations and the subtle manipulation of drug ***,change is occurring as the understanding of the basis of motor complications and fluctuations and non-motor symptoms *** pharmacological options are expanding with the advent of longer acting versions of existing dopaminergic drugs,new drug delivery systems and the introduction of non-dopaminergic agents able to manipulate motor function both within the basal ganglia and in other brain ***-dopaminergic agents are also being investigated for the treatment of dyskinesia and for the relief of non-motor ***,while therapy continues to improve,the treatment of late stage PD remains problematic with non-motor symptoms dominating the unmet need in this patient group.

关键词： pharmacological dosage expanding

Metal concentrations and mycorrhizal status of plants colonizing copper mine tailings: potential for revegetation

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Science China(Life Sciences) 2005年第Z1期48卷 156-164页

作者： CHRISTIE peter Department of Agricultural and Environmental Science The Queen's University of Belfast Newforge Lane Belfast BT9 5PX Northern Ireland UK

A field survey of metal concentrations and mycorrhizal status of plants growing on copper mine tailings was conducted in Anhui Province, China. Available phosphorus and organic matter in the tailings were very low. High concentrations of Pb, Zn, As and Cd as well as Cu were observed on some sites. The dominant plants growing on mine tailings belonged to the families Gramineae and Compositae, and the most widely distributed plant species were Imperata cylin-drica, Cynodon dactylon and Paspalum distichum. Coreopsis drummondii also grew well on the arid sites but not on wet sites. Very low or zero arbuscular mycorrhizal (AM) fungal colonization was observed in most of the plants, but extensive mycorrhizal colonization was recorded in the roots of C. drummondii and C. dactylon. Metal concentrations in plant tissues indicated that /. cylindrica and P. distichum utilized avoidance mechanisms to survive at high metal concentrations. The investigation suggests that remediation and revegetation of heavy metal contaminated sites might be facilitated by selection of tolerant plant species. Isolation of tolerant AM fungi may also be warranted.

关键词： phytoremediation, revegetation, heavy metals, copper mine tailings, arbuscular mycorrhiza.

Smith normal forms of incidence matrices

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Science China Mathematics 2013年第7期56卷 1359-1371页

作者： SIN peter Department of Mathematics University of Florida

A brief introduction is given to the topic of Smith normal forms of incidence matrices. A general discussion of techniques is illustrated by some classical examples. Some recent advances are described and the limits o... 详细信息

关键词： Smith normal form incidence matrix adjacency matrix

Cockroach as the Earliest Eusocial Animal

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Acta Geologica Sinica(English Edition) 2010年第4期84卷 793-808页

作者： peter VRSANSKY Geological Institute Slovak Academy of SciencesBratislavaSlovakia Russian Academy of Sciences MoscowRussia

A completely preserved cockroach Socialaperlucida gen. et sp. nov. （Blattida： Socialidae faro. nov.） is described from the Mesozoic （Albian Early Cretaceous） amber of Archingeay in France. It is categorized within the new family Socialidae, originating from the Mesozoic cockroach family Liberiblattinidae, and representing the sister group to the most basal known eutermite families. Numerous direct and indirect morphological evidence （such as a unique narrow body and pronotum with reduced coloration, legs without carination and with numerous sensillar pitts （forelegs） as adaptations to life in nests analogical to the living termitophillous species; enlarged head, long palps for communication, a general venation modified in a direction towards termites （subcosta and radial vein [R] approximated, R branches approximated, simplified, cross-veins reduced）, and possibly also the development of the breaking forewing sutura for detaching wings after marriage flight）, suggest its eusocial mode of life. Thus, the first eusociality originated within cockroaches, prior to giving birth to termites; termites and Cryptocercus are not directly related. The group of eusocial cockroaches makes termite morphotaxon polyphyletic, but also in this case, the erection of a new order for mastotermites （including Cratomastotermitidae） and/or the inclusion of eusocial, morphological cockroaches within termites appears counterproductive, thus an example of such a general exception to the taxonomical procedure is provided.

关键词： fossil insect Mesozoic amber Blattida eusociality termite origin polyphyletic taxon new family

Possibilities for Healthcare Computing

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Journal of Computer Science & Technology 2011年第4期26卷 625-631页

作者： peter Szolovits Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology

Advances in computing technology promise to aid in achieving the goals of healthcare. We review how such changes can support each of the goals of healthcare as identified by the U.S. Institute of Medicine： safety, effectiveness, patient-centricity, timeliness, efficiency, and equitability. We also describe current foci of computing technology research aimed at realizing the ambitious goals for health information technology that have been set by the American Recovery and Reinvestment Act of 2009 and the Health Reform Act of 2010. Finally, we mention efforts to build health information technologies to support improved healthcare delivery in developing countries.

关键词： healthcare computing United States national plans meaningful use criteria substitutable applications medical natural language processing mobile health telehealth