检索结果-南通市图书馆

Insect Science 2023年第3期30卷 857-866页

作者： mikhail v.kozlov vitali Zverev Tobias M.Sandner Erik J.van Nieukerken Elena L.Zvereva Department of Biology University of TurkuTurkuFinland Department of Biology Philipps-Universitat MarburgMarburgGermany Naturalis Biodiversity Center Leidenthe Netherlands

Damage to plant communities imposed by insect herbivores generally decreases from low to high *** decrease is routinely attributed to declines in herbivore abundance and/or diversity,whereas latitudinal changes in per capita food consumption remain virtually ***,we tested the hypothesis that the lifetime food consumption by a herbivore individual decreases from low to high latitudes due to a temperature-driven decrease in metabolic *** 2016 to 2019,we explored latitudinal changes in multiple characteristics of linear(gallery)mines made by larvae of the pygmy moth,Stigmella lapponica,in leaves of downy birch,Betula *** mined leaves were larger than intact leaves at the southern end of our latitudinal gradient(at 60°N)but smaller than intact leaves at its northern end(at 69°N),suggesting that female oviposition preference changes with *** latitudinal changes were observed in larval size,mine length or area,and in per capita food consumption,but the larval feeding efficiency(quantified as the ratio between larval size and mine size)increased with ***,*** larvae consumed less foliar biomass at higher latitudes than at lower latitudes to reach the same *** on space-for-time substitution,we suggest that climate warming will increase metabolic expenses of insect herbivores with uncertain consequences for plant-herbivore interactions.

关键词： Betula pubescens climate change food quality insect herbivory metabolic expenses oviposition preference

Decline of Eulia ministrana(Lepidoptera:Tortricidae)in polluted habitats is not accompanied by phenotypic stress responses

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 2021年第5期28卷 1482-1490页

作者： vitali Zverev mikhail v.kozlov Department of Biology University of TurkuTurkuFinland

Env ironmental pollution is currently identified as one of the major drivers of rapid decline of insect populations,and this finding has revitalized interest in insect responses to *** tested the hypothesis that the pollution-induced decline of insect populations can be predicted from phenotypic stress responses expressed as morphological differences between populations inhabiting polluted and unpolluted *** explored populations of the brassy tortrix Eulia ministrana in subarctic forests along an environmental disturbance gradient created by long-lasting severe impacts of aerial emissions of the copper-nickel smelter in Monchegorsk,northwestern *** used pheromone traps to measure the population densities of this leafrolling moth and to collect specimens for assessment of three morphological stress indices:size,forewing melanization,and fluctuating asymmetry in wing *** length of *** increased by 10%,and neither forewing melanization nor fluctuating asymmetry changed from the unpolluted forest to the heavily polluted industrial ***,the population density of *** decreased 5 to 10 fold in the same pollution ***,none of the studied potential morphological stress indicators signaled vulnerability of *** to environmental pollution and/or to pollution-induced environmental *** conclude that insect populations can decline without any visible signs of *** use of morphological proxies of insect fitness to predict the consequences of human impact on insect populations is therefore risky until causal relationships between these proxies and insect abundance are deciphered.

关键词： copper-nickel smelter fluctuating asymmetry industrial melanism Kola Peninsula moth size pheromone trapping

High tolerance to simulated root herbivory in hydroponically grown cuttings of Salix phylicifolia

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 Forestry Research 2021年第6期32卷 2661-2668页

作者： mikhail v.kozlov Elena L.Zvereva Department of Biology University of Turku20014TurkuFinland

The shortage of information regarding the effects of root damage on forest plants,especially trees and shrubs,is the most critical gap in our knowledge of belowground insect *** study examines how the tea-leaved willow,Salix phylicifolia,responds to simulated root herbivory and how nutrient availability affects these *** grown cuttings were used to precisely apply the desired levels of root ***:shoot ratios increased proportionally to the intensity of root damage,whereas specific leaf area,leaf water content and chlorophyll fluorescence were not *** removal of 2-64%of roots once in early summer and the removal of 25%of roots three times during the summer did not change biomass production by *** repeated removal of 50 and 75%of roots decreased shoot biomass and,to a lesser extent,total root *** tolerance of tea-leaved willow to root damage was greater in low nutrient treatment than in high nutrient treatment,thus supporting the Growth Rate *** to this model,in low resource conditions plants do not attain their maximum growth rate and therefore have a higher capacity for regrowth after *** conclude that,in the absence of water limitations,tea-leaved willow shows high tolerance to root losses and is unlikely to be affected by realistic levels of root herbivory.

关键词： Belowground herbivory Chlorophyll fluorescence Leaf water content Plant growth

Climate shapes the spatiotemporal variation in color morph diversity and composition across the distribution range of Chrysomela lapponica leaf beetle

在线全文

学校读者我要写书评

暂无评论

Insect Science 2022年第3期29卷 942-955页

作者： mikhail v.kozlov Zowi Oudendijk Anders Forsman vojtech Lanta Maxwell v.L.Barclay vladimir I.Gusarov Bert Gustafsson Zheng-Zhong Huang Oksana Y.Kruglova Yuri M.Marusik Yuri E.mikhailov Marko Mutanen Alexander Schneider Lukas Sekerka Maksim E.Sergeev vitali Zverev Elena L.Zvereva Department of Biology University of TurkuTurkuFinland Department of Animal Ecology and Physiology Radboud UniversityNijmegenThe Netherlands Department of Biology and Environmental Science Linnaeus UniversityKalmarSweden Institute of Botany The Czech Academy of SciencesDukelskaTrebohCzech Republic Department of Life Sciences Natural History MuseumLondonUnited Kingdom Natural History Museum University of OsloOsloNorway Departmant of Zoology Swedish Museum of Natural HistoryStockholmSweden elnsititute of Zoology Chinese Academy of SciencesBeijingChina Faculty of Biology Belarusian State UniversityMinskBelarus Department of Biocenology Institute for Biological Problems of the NorthFar East Branch of the Russian Academy of SciencesMagadanRussia Department of Zoology&Entomology University of the Free StateBloemfonteinSouth Africa Department of Ecology&Nature Management Ural State Forest Engineering UniversityYekaterinburgRussia Ecology and Genetics Research Unit University of OuluOuluFinland Department of Terrestrial Zoology Senckenberg Research Institute and Natural History MuseumFrankfurt am MainGermany Department of Entomology National MuseumPrague 9CirkusovaCzech Republic Federal Scientific Center of the East Asia Terrestrial Biodiversity Far East Branch of the Russian Academy of SciencesVladivostokRussia

Color polymorphism offers rich opportunities for studying the eco-evolutionary mechanisms that drive the adaptations of local populations to heterogeneous and changing *** explored the color morph diversity and composition in a Chrysomela lapponica leaf beetle across its entire distribution range to test the hypothesis that environmental and climatic variables shape spatiotemporal variation in the phenotypic structure of a polymorphic *** obtained information on 13617 specimens of this beetle from museums,private collections,and *** specimens(collected from 1830-2020)originated from 959 localities spanning 33°latitude,178°longitude,and 4200 m *** classified the beetles into five color morphs and searched for environmental factors that could explain the variation in the level of polymorphism(quantified by the Shannon diversity index)and in the relative frequencies of individual color *** highest level of polymorphism was found at high latitudes and *** color morphs differed in their climatic requirements;composition of colour morphs was independent of the geographic distance that separated populations but changed with collection year,longitude,mean July temperature and betweenyear temperature *** proportion of melanic beetles,in line with the thermal melanism hypothesis,increased with increasing latitude and altitude and decreased with increasing climate *** morph frequencies also declined during the past century,but only at high latitudes and altitudes where recent climate warming was especially *** observed patterns suggest that color polymorphism is especially advantageous for populations inhabiting unpredictable environments,presumably due to the different climatic requirements of coexisting color morphs.

关键词： adaptive polymorphism color morphs evolutionary dynamics geographic variation phenotypic diversity thermal melanism

Morphology of crater and caldera lakes in the Far Eastern region of Russia and the features of their development

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 Mountain Science 2024年第4期21卷 1246-1258页

作者： Dmitrii N.kozlov Ekaterina v.LEBEDEvA Institute of Marine Geology and Geophysics Far Eastern Branch of the Russian Academy of SciencesYuzhno-Sakhalinsk 693022Russia Institute of Geography Russian Academy of SciencesMoscow 119017Russia

volcanic lakes in the Kuril-Kamchatka region are difficult to access,and for this reason,they remain poorly studied,with only scattered and brief data *** authors have conducted a study of 10 lake basins using modern digital echolocation survey techniques and have also compiled and summarized published data for 15 lakes in the region,calculating their main morphometric *** has been established that many caldera lake basins are modified by young explosive funnels,extrusive or effusive domes,and exhibit traces of hydrothermal *** lakes of the same genetic type in the Kuril-Kamchatka region are similar in depth and depression forms,the group of caldera lakes shows less homogeneity across all morphometric *** was found that the absolute heights of the reservoirs on Kamchatka Peninsula are generally greater than those on the Kuril Islands,as is often the case with the size of their *** volcanic lakes under study can rapidly change their volume and shape under the influence of endogenous *** the first time for this region,on the base of repeated observations,underwater extrusive dome rate growth and the approximate rates of 2 lake level changes were *** observations of lakes in the Ksudach calderas(Kamchatka)and on Simushir Island indicate approximate rates of level changes:a decrease ranging within 0.5-0.6 m per year(over a 27-year observation interval)and an increase reaching up to 0.26 m per year(over a 48-year interval).The growth rate of the underwater extrusive dome in Lake Shtyubel has averaged 1-1.6 m per year over the past 25 *** analysis has facilitated the first generalization regarding the morphology and developmental features of crater and caldera lakes in the Kuril-Kamchatka region of Russia,representing an important step in their *** results obtained will provide a solid foundation for subsequent research in this region and may be of interest to researchers studying

关键词： volcanic lakes Echolocation survey volcanism Gashydrotherms Kamchatka Kuril Islands

Agglomeration of coal and polyethylene mixtures during fixed‑bed co‑gasification

在线全文

学校读者我要写书评

暂无评论

International Journal of Coal Science & Technology 2024年第2期11卷 91-100页

作者： Igor G.Donskoy Aleksandr N.kozlov Maksim v.Penzik Denis A.Svishchev Lu Ding Melentiev Energy Systems Institute Russian Federation130 Lermontova StreetIrkutskRussia 664033 East China University of Science and Technology 130 Meilong RoadShanghai 200237China

The article presents the results of experimental studies on the gasification of mixtures of brown coal and polyethylene(up to 20 wt%fraction)in a laboratory *** work aims to study the agglomeration process during the heating and oxidation of the *** measurement results(gas composition,pressure drop)provide indirect information on the dynamics of thermal decomposition and structural changes in the fuel *** have shown that the interaction between polyethylene and a coal surface leads to the formation of dense agglomerates,in which the molten polymer acts as a *** form as a result of interfacial interactions between components and filtration flow *** hydrogen/carbon ratio in the solid residue of coal-polyethylene co-gasification increases from 0.07–0.2 to 1.11,indicating the formation of stable hydrocarbon compounds on the carbon *** conducted research makes it possible to identify possible interactions between chemical reactions and transfer processes that lead to agglomeration in mixtures of coal with polyethylene.

关键词： Coal Polyethylene Gasification Combustion Agglomeration

Exploring van der Waals materials with high anisotropy:geometrical and optical approaches

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第4期13卷 645-653页

作者： Aleksandr S.Slavich Georgy A.Ermolaev mikhail K.Tatmyshevskiy Adilet N.Toksumakov Olga G.Matveeva Dmitriy v.Grudinin Kirill v.voronin Arslan Mazitov Konstantin v.Kravtsov Alexander v.Syuy Dmitry M.Tsymbarenko mikhail S.Mironov Sergey M.Novikov Ivan Kruglov Davit A.Ghazaryan Andrey A.vyshnevyy Aleksey v.Arsenin valentyn S.volkov Kostya S.Novoselov Moscow Center for Advanced Studies Kulakova str.20Moscow 123592Russia. Emerging Technologies Research Center XPANCEOInternet CityEmmay TowerDubaiUnited Arab Emirates. Donostia International Physics Center(DIPC) Donostia/San-Sebastián 20018Spain. Institute of Materials Ecole Polytechnique Federale de Lausanne1015 LausanneSwitzerland. Department of Chemistry Lomonosov Moscow State UniversityMoscow 119991Russia. Laboratory of Advanced Functional Materials Yerevan State UniversityYerevan 0025Armenia. National Graphene Institute(NGI) University of ManchesterManchester M139PLUK. Department of Materials Science and Engineering National University of SingaporeSingapore 03-09 EASingapore. Institute for Functional Intelligent Materials National University of Singapore117544 SingaporeSingapore

The emergence of van der Waals(vdW)materials resulted in the discovery of their high optical,mechanical,and electronic anisotropic properties,immediately enabling countless novel phenomena and *** success inspired an intensive search for the highest possible anisotropic properties among vdW ***,the identification of the most promising among the huge family of vdW materials is a challenging quest requiring innovative ***,we suggest an easy-to-use method for such a survey based on the crystallographic geometrical perspective of vdW materials followed by their optical *** our approach,we found As2S3 as a highly anisotropic vdW *** demonstrates high in-plane optical anisotropy that is~20%larger than for rutile and over two times as large as calcite,high refractive index,and transparency in the visible range,overcoming the century-long record set by *** these benefits,As2S3 opens a pathway towards nextgeneration nanophotonics as demonstrated by an ultrathin true zero-order quarter-wave plate that combines classical and the Fabry–Pérot optical phase ***,our approach provides an effective and easy-to-use method to find vdW materials with the utmost anisotropic properties.

关键词： anisotropy anisotropic high

A combined computational/experimental study of anode-concerned voltage drop in aqueous primary Mg-air batteries

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 Magnesium and Alloys 2024年第5期12卷 1854-1866页

作者： Wen Xu Min Deng Darya Snihirova Linqian Wang Yulong Wu Sviatlana v.Lamaka mikhail L.Zheludkevich Daniel Hoche Institute of Surface Science Helmholtz-Zentrum Hereon21502 GeesthachtGermany School of Materials Science and Engineering Hebei University of Technology300000TianjinChina Institute for Materials Science Faculty of EngineeringKiel University24143 KielGermany

The voltage drop appearing at Mg anode-electrolyte interface is a critical issue for the battery power and energy density of aqueous primary Mg-air *** respective voltage loss is typically assigned to the deposits layer forming on the anode surface during *** this work,we experimentally and computationally investigate the critical factors affecting the voltage drop at Mg anode towards a deeper understanding of the contribution of deposit and its growth.A two-dimensional(2D)mathematical model is proposed to compute the voltage drop of Mg-0.15Ca wt.%alloy(Mg-0.15Ca)by means of a semi-empirical formulas and experiments-based modification model,considering the effect of discharge current density,the negative difference effect(NDE)and surface deposits layer *** model is utilized to simulate the discharge potential of the anode at predefined experimental current *** computed voltage drop(half-cell voltage)is in good agreement with the experimental *** applicability of the mathematical model is successfully validated on the second material(namely high-purity Mg).

关键词： Aqueous Mg-air battery voltage drop NDE Charge transfer Deposits-related resistances

Wood anatomy chronologies of Scots pine in the foothills of the Western Sayan(Siberia)

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2024年第3期35卷 13-27页

作者： Elena A.Babushkina Dmitry R.Dergunov mikhail S.Zharkov Liliana v.Belokopytova Dina F.Zhirnova Bao Yang Jingjing Liu Xiaomei Peng Eugene A.vaganov Khakass Technical Institute Siberian Federal UniversityAbakan 655017Russia Institute of Ecology and Geography Siberian Federal UniversityKrasnoyarsk 660036Russia Mathematical Methods and IT Department Siberian Federal UniversityKrasnoyarsk 660036Russia Key Laboratory of Desert and Desertification Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000People's Republic of China School of Geographic and Oceanographic Sciences Nanjing UniversityNanjing 210093People's Republic of China Department of Dendroecology V.N.Sukachev Institute of ForestSiberian Branch of the Russian Academy of ScienceKrasnoyarsk 660036Russia

Recent methodological advances in quantitative wood anatomy have provided new insights into the climatic responses of radial growth at the scale of cell structure of tree rings. This study considered long-term chronologies of tracheid measurements, indexed by a novel approach to separate their specific climatic responses from signal recorded in cell production(closely reflected in tree-ring width). To fill gaps in understanding the impact of climate on conifer xylem structure, Scots pine(Pinus sylvestris L.)trees > 200 years old were selected within the forest-steppe zone in southern Siberia. Such habitats undergo mild moisture deficits and the resulting climatic regulation of growth processes. Mean and maximum values of cell radial diameter and cell wall thickness were recorded for each tree *** a low level of climatogenic stress, components of cell chronologies independent of cambial activity were separated to obtain significant climatic signals revealing the timing of the specific stages of tracheid differentiation. Cell expansion lasted from mid-April to July and was impacted similarly to tree-ring width(stimulated by precipitation and stressed by heat), maximum cell size formed late June. A switch in the climatic responses of mean anatomical traits indicated transition to latewood in mid-July. Secondary wall deposition lasted until mid-September, suppressed by end of season temperatures. Generally, anatomical climatic responses were modulated by a less dry May and September compared with summer months.

关键词： Quantitative wood anatomy Cell radial size Cell wall thickness Pinus sylvestris Climatic response

Atherosclerosis originating from childhood:Specific features

在线全文

学校读者我要写书评

暂无评论

Journal of Biomedical Research 2024年第3期38卷 233-240页

作者： Anastasia v.Poznyak Alexey A.Yakovlev mikhailА.Popov Elena B.Zhigmitova vasily N.Sukhorukov Alexander N.Orekhov Institute for Atherosclerosis Research Moscow 121609Russia Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology Moscow 109240Russia Department of Cardiac Surgery Moscow Regional Research and Clinical InstituteMoscow 129110Russia Laboratory of Angiopathology Institute of General Pathology and PathophysiologyMoscow 125315Russia

Atherosclerosis is extremely ***,it is considered a disease of older people,who most often experience problems with the heart and blood *** much attention from the scientific community has been paid to studying the association between aging and atherosclerosis,as well as its consequences,there is evidence that atherosclerosis occurs at an early *** may form both during intrauterine development and in *** plays an important role in childhood atherosclerosis,along with previous infectious diseases and excess weight of both the child and the *** the present review,we examined the development of atherosclerosis and the prerequisites in childhood.

关键词： atherosclerosis childhood pediatrics cardiovascular disease