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Siberian silkmoth outbreaks surpassed geoclimatic barrier in Siberian Mountains

Journal of Mountain Science 2020年第8期17卷 1891-1900页

作者： KHARUK Viacheslav I. im Sergei T. SOLDATOV Vladimir V. Sukachev Institute of Forest Federal Scientific CenterRussian Academy of ScienceSiberian BranchAcademgorodok 50/28Krasnoyarsk660036 Russia Siberian Federal University Svobodny str.79Krasnoyarsk660041 Russia Reshetnev Siberian State University of Science and Technology Krasnoyarsky rabochy str.31Krasnoyarsk660014 Russia Russian Center of Forest Protection Academgorodok 50A/2Krasnoyarsk660036 Russia

Siberian silkmoth(SSM,Dendrolimus sibiricus Tschetv.)is the most important defoliator of Siberian pine(Pinus sibirica Du Tour)and fir(Abies sibirica Ledeb.)***-induced SSM outbreaks are one of the major driving factors of successions within the taiga *** is suggested that climate change impacted the SSM range and life *** analyzed the migration of alpine and northerly SSM outbreak boundaries in Siberia and the impact of the climate variables and topography on the outbreak *** used time-series scenes(multispectral data,and vegetation indexes EVI and NDII)in combination with field studies,climate variables,and GIS *** found that SSM outbreaks in the area of alpine boundary shifted about 370 m uphill since the mid of *** outbreak onset was promoted by increased dryness and active temperatures and decreased root zone moisture content in the spring-early summer *** terrain topography strongly affected SSM outbreak onset and ***,the outbreak was located at the middle elevations on the gentle concave southeastern slopes,which are the favorable insect habitats between *** the outbreak expanded uphill and downhill,to steeper slopes,and both concave and convex *** with elevation range expansion,SSM surpassed its northern historical outbreak boundary:the potential outbreaks’boundary moved about 300 km *** warming contributes to SSM migration into former outbreak free conifer stands located in highlands and at northern latitudes.

关键词： Insect outbreaks Remote sensing monitoring Insect ranges expansion Siberian silkmoth Forest health Conifer mortality

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Alpine ecotone in the Siberian Mountains:vegetation response to warming

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Journal of Mountain Science 2021年第12期18卷 3099-3108页

作者： KHARUK Viacheslav I. im Sergei T. PETROV Il’ya A. Sukachev Institute of Forest Federal Scientific CenterRussian Academy of ScienceSiberian BranchAcademgorodok 50/28Krasnoyarsk 660036Russia Siberian Federal University Svobodny str.79Krasnoyarsk 660041Russia Reshetnev Siberian State University of Science and Technology Krasnoyarsky rabochy str.31Krasnoyarsk 660014Russia

Birch(Betula tortuosa)is one of the treeline forming species within the Siberian *** analysed the area dynamics of birch stands and the upslope climb of birch treeline based on the Landsat time series scenes and on-ground *** found that since the warming onset(1970th)birch area increased by 10%,birch stands and treeline boundary were moving upslope with a rate of 1.4 m/yr and 4.0 m/*** upslope shift correlated with air temperatures at the beginning(May-June)and the end(August-October)of the growth ***,no correlation was found between birch upslope migration and *** negatively influenced both birch area growth and birch upslope climb during spring,fall,and *** the windy habitats,birch,together with larch and Siberian pine,formed clusters(hedges)which mitigated the influence of adverse *** clusters are the adaptive pattern for trees’upslope climb within windward *** other adaptation to the harsh alpine ecotone habitat is non-leaf(bark)photosynthesis which supports tree ***,Betula tortuosa upslope climb depends on the wind impact and warming in spring and fall that extended growth *** ongoing warming and observed wind speed decrease on the background of sufficient precipitation,it is expected to further birch advance into alpine tundra in the Siberian Mountains.

关键词： Alpine biomes Treeline shift rate Treeline ecotone Siberian mountain forests Betula tortuosa Forest densification Tree clustering

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Defocused imaging-based quantification of plasmon-induced distortion of single emitter emission

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Light(Science & Applications) 2023年第10期12卷 2236-2247页

作者： Gwiyeong Moon Taehwang Son Hajun Yoo Changhun Lee Hyunwoong Lee Seongmin im Donghyun Kim School of Electrical and Electronic Engineering Yonsei UniversitySeoul 03722Korea LG Innotek Seoul 07796South Korea Center for Systems Biology Massachusetts General HospitalBostonMAUSA LG Display PajuGyeonggi-do 10845South Korea

Optical properties of single emitters can be significantly improved through the interaction with plasmonic structures,leading to enhanced sensing and imaging *** turn,single emitters can act as sensitive probes of the local electromagnetic field surrounding plasmonic structures,furnishing fundamental insights into their physics and guiding the design of novel plasmonic ***,the interaction of emitters in the proximity to a plasmonic nanostructure causes distortion,which hinders precise estimation of position and polarization state and is one of the reasons why detection and quantification of molecular processes yet remain fundamentally challenging in this era of ***,we investigate axially defocused images of a single fluorescent emitter near metallic nanostructure,which encode emitter positions and can be acquired in the far-field with high sensitivity,while analyzing the images with pattern matching algorithm to explore emitter-localized surface plasmon interaction and retrieve information regarding emitter *** distortion in defocused images of fluorescent beads and quantum dots near nanostructure was observed and analyzed by pattern matching and finite-difference time-domain methods,which revealed that the distortion arises from the emitter interaction with *** matching algorithm was also adopted to estimate the lateral positions of a dipole that models an emitter utilizing the distorted defocused images and achieved improvement by more than 3 times over conventional diffraction-limited localization *** improvement by defocused imaging is expected to provide a way of enhancing reliability when using plasmonic nanostructure and diversifying strategies for various imaging and sensing modalities.

关键词： distortion matching interaction

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Web search volume as a surrogate of public interest in biodiversity: a case study of Japanese red list species

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Ecosystem Health and Sustainability 2018年第12期4卷 26-35页

作者： Ji Yoon Kim Akira Noda Ran-Young im Jun Nishihiro Department of Environmental Science Toho UniversityChibaJapan Center for Wildlife Conservation Studies Toho UniversityChibaJapan

Introduction:Citizen science has contributed substantially to the quantity of biodiversity data collections and is used as an essential monitoring scheme for global conservation ***,there remain large gaps in the geographic and taxonomic coverage of data collections,and different levels of interest in participation and uneven distribution of participants can result in biased data collection in citizen science *** issues must be addressed for more efficient use of citizen science-based biodiversity *** compared web search volumes with citizen-collected occurrence data of Japanese Red List ***:Uneven distribution of web search volumes with different taxa was correlated with the amount of data collected by citizen-volunteered ***,the relative web search volumes and amounts of citizen-collected data showed similar spatial patterns at the province ***:Overall,our results indicate that web search volume can indirectly reflect potential citizen participation or interest in particular *** search behavior can help project coordinators estimate potential citizen engagement and refine efficient citizen participation programs for biodiversity conservation.

关键词： Big data citizen science culturomics endangered species internet behavior

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A facile one-step approach to hierarchically assembled core-shell-like MnO2@MnO2 nanoarchitectures on carbon fibers： An efficient and flexible electrode material to enhance energy storage

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Nano Research 2016年第5期9卷 1507-1522页

作者： Goli Nagaraju Yeong Hwan Ko Sung Min Cha Sang Hyuk im Jae Su Yu Department of Electronics and Radio Engineering Institute for Wearable Convergence Electronics Kyung Hee University 1732 Deogyeong-daero Giheung-gu Yongin-si Gyeonggi-do 446-701 Republic of Korea Functional Crystallization Center (ERC) Department of Chemical Engineering Kyung Hee University 1732 Deogyeong-daeroGiheuncl-qu Yonqin-si Gyeonqqi-do 446-701 Republic of Korea

Hierarchical core-shell-like MnO2 nanostructures （NSs） were used to anchor MnO2 hexagonal nanoplate arrays （HNPAs） on carbon cloth （CC） fibers. The NSs were prepared by a novel one-step electrochemical deposition method. Under an external cathodic voltage of -2.0 V for 30 min, hierarchical core-shell-like MnO2-NS-decorated MnO2 HNPAs （MnO2 NSs@MnO2 HNPAs） were uniformly grown on CC with reliable adhesion. The phase purity and morphological properties of the samples were characterized by various physicochemical techniques. At a constant external cathodic voltage, growth of MnO2 NSs@MnO2 HNPAs on CC was carried for different time periods. When utilized as a flexible, robust, and binder-free electrode for pseudocapacitors, the hierarchical core-shell-like MnO2 NSs@MnO2 HNPAs on CC showed clearly enhanced electrochemical properties in 1 M Na2SO4 electrolyte solution. The results indicate that the MnO2 NSs@MnO2 HNPAs on CC have a maximum specific capacitance of 244.54 F/g at a current density of 0.5 A/g with excellent cycling stability compared to that of bare MnO2 HNPAs on CC （112.1 F/g at 0.5 A/g current density）. We believe that the superior charge storage performance of the pseudocapacitive electrode can be mainly attributed to the hierarchical MnO2 NSs@MnO2 HNPAs building blocks that have a large specific surface area, offering additional electroactive sites for efficient electrochemical reactions. The facile and single-step approach to growth of hierarchical pseudocapacitive materials on textile based electrodes opens up the possibility for the fabrication of high-performance flexible energy storage devices.

关键词： manganese oxide hierarchical structures carbon cloth electrochemical deposition energy storage properties

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Warming hiatus-and evergreen conifers in Altay-Sayan Region,Siberia

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Journal of Mountain Science 2018年第12期15卷 2579-2589页

作者： Viacheslav I.KHARUK Sergei T.im Il'ya A.PETROV Sukachev Institute of Forest Federal Scientific CenterRussian Academy of ScienceSiberian BranchAcademgorodok 50/28Krasnoyarsk660036Russia Siberian Federal University Suobodny str.79Krasnoyarsk 660041Russia Reshetnev Siberian State University of Science and Technology Krasnoyarsky rabochy str.31Krasnoyarsk 660014Russia

"Warming hiatus" occurred in the AltaySayan Mountain Region, Siberia in c. 1997–2014. We analyzed evergreen conifer(EGC) stands area(satellite data) and trees(Siberian pine, Pinus sibirica Du Tour, Siberian fir, Abies sibirica Ledeb.) growth increment(dendrochronology data) response to climate variables before and during the hiatus. During the hiatus, EGC area increased in the highlands(>1000 m)(+30%), whereas at low and middle elevations(imate variables switch after breakpoint year(1983). Before breakpoint, June air temperature(positive correlation) and moisture(negative correlations) controlled GI. Further temperature increase leads GI depression and switched correlation signs

关键词： Growth increment Warming hiatus Warming impact Conifer decline Tree growth Tree mortality Conifer mortality Water stress

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Olfactory Response of Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) to Volatiles Emitted by Mungbean Plants

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Agricultural Sciences in China 2011年第4期10卷 560-565页

作者： BAI Shu-xiong WANG Zhen-ying HE Kang-lai im Dae-joon State Key Laboratory of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing 100193 P.R.China National Crop Experiment Station Rural Development Administration Suwon 441-100 Republic of Korea

Intercropping maize with the prostrate variety of mungbean, Vigna radiata （L.） Wilczek which grows flat along the ground can increase parasitism of the eggs of the Asian corn borer, Ostrinia furnacalis （Guenée）, a crucial insect pest of maize in China, by Trichogramma ostriniae Pang Chen. This study investigated the behavioural responses of T. ostriniae to plant volatiles emitted from whole plants, leaves, and flowers of prostrate and erect varieties of mungbean in a 4-armed olfactometer. Female parasitiods were significantly attracted to the odours from some varieties of prostrate mungbean when the visit duration and the number of visits were considered, but were not attracted to the odours from any erect varieties. The attractive odours were shown to emanate from the leaves, rather than from the flowers of prostrate mungbean plants. These results have implications for the augmentation of Trichogramma parasitoids in bio-control of O. furnacalis and other crop pests.

关键词： Trichogramma ostriniae olfactory response Vigna radiata plant volatile

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White organic light-emitting diodes based on electroplex from polyvinyl carbazole and carbazole oligomers blends

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Chinese Physics B 2010年第3期19卷 546-550页

作者：陈飞鹏徐斌赵祖金田文晶吕萍 im Chan State Key Laboratory of Supramolecular Structure and Materials Jilin University Department of Chemistry Zhejiang University Department of Chemistry Konkuk UniversityKorea

White organic light-emitting diodes with a blue emitting material fluorene-centred ethylene-liked carbazole oligomer （Cz6F） doped into polyvinyl carbazole （PVK） as the single light-emitting layer are reported. The optical properties of Cz6F, PVK, and PVK：Cz6F blends are studied. Single and double layer devices are fabri- cated by using PVK： Cz6F blends, and the device with the configuration of indium tin oxide （ITO）/PVK：Cz6F/ tris（8-hydroxyquinolinate）aluminium （Alq3）/LiF/A1 exhibits white light emission with Commission Internationale de l＇Eclairage chromaticity coordinates of （0.30, 0.33） and a brightness of 402 cd/m^2. The investigation reveals that the white light is composed of a blue-green emission originating from the excimer of Cz6F molecules and a red emission from an electroplex from the PVK：Cz6F blend films.

关键词： white organic light-emitting diodes electroluminescence electroplex

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Fatigue crack in large-scale tubular joints for offshore structures

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Science China(Technological Sciences) 2011年第3期54卷 705-714页

作者： Chul-Hee JO Sung-Woo im Won-Chul CHO Kwan-Kyu PARK Department of Naval Architecture and Ocean Engineering Inha University Research Institute of Industrial Science and Technology Department of Civil & Environmental Engineering Chung-Ang University Samsung Heavy Industry Inc.

Tubular members have been used for constructing offshore structures. Large-scale fatigue tests of welded tubular K-joints under the balanced in-plane bending brace were carried out to investigate the fatigue behavior of API 2W Gr.50 steel produced by POSCO. The experimental results were verified by numerical approaches and compared with the IIW, DnV RP-C203 and API RP 2A-WSD design curves. The test results based on the hot spot stress were in agreement with the design curves. The SCF factor for tubular K-joint was also obtained. The numerical parametric study of the K-joint (using the finite element program) was described and its results were compared with experimental results. The stress effects of various parameters including α, β, γ, τ and θ on the stress in the K-joint were investigated. The stress distribution for each parameter was introduced. The study showed that the maximum stress of the joint varied according to the variation of joint parameters.

关键词： tubular K-joint API 2W Gr.50 hot spot stress SCF fatigue through-thickness crack S-N curve numerical parametric study

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Trap and 1/f-noise effects at the surface and core of GaN nanowire gateall-around FET structure

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Nano Research 2019年第4期12卷 809-814页

作者： Mallem Siva Pratap Reddy Ki-Sik im Jung-Hee Lee Raphael Caulmione Sorin Cristoloveanu School of Electronics Engineering Kyungpook National University Daegu 41566 Republic of Korea Advanced Material Research Center Kumoh National Institute of Technology Gumi 39177 Republic of Korea SOITEC Bernin 38190 France Institute of Microelectronics Electromagnetism and Photonics Grenoble Polytechnic Institute Minatec Grenoble 38016 France

Using capacitance,conductance and noise measurements,we investigate the trapping behavior at the surface and in the core of triangular-shaped one-dimensional (1 D) array of GaN nanowire gate-all-around field effect transistor (GAA FET),fabricated via a top-down *** surface traps in such a low dimensional device play a crucial role in determining the device *** estimated surface trap density rapidly decreases with increasing frequency,ranging from 6.07 × 1012 cm-2·eV-1 at 1 kHz to 1.90 × 1011 cm-2·eV-1 at 1 MHz,*** noise results reveal that the power spectral density increases with gate voltage and clearly exhibits 1/f-noise signature in the accumulation region (Vgs > Vth =3.4 V) for all *** the surface depletion region (1.5 V ime,the electron trapping/detrapping process through deep traps expands into the totally depleted nanowire core and the G-R noise prevails in the entire nanowire channel.

关键词： gate-all-around field effect transistor (FET) nanowire GaN trap 1/f-noise

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