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Tree structure and diversity shape the biomass of primary temperate mountain forests

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Forest Ecosystems 2024年第4期11卷 568-579页

作者： Dheeraj Ralhan Ruffy Rodrigo Heather Keith Annemiek Irene Stegehuis Jakob Pavlin Yumei Jiang Milos Rydval Juliana Nogueira Alexandre Fruleux Marek Svitok Martin Mikolas Daniel Kozak Martin Dusatko pavel Janda Oleh Chaskovsky Catalin-Constantin Roibu Miroslav Svoboda Czech University of Life Sciences Prague Faculty of Forestry and Wood SciencesKamycka 129Suchdol16521 Praha 6Czech Republic Department of Forest Science Biliran Province State UniversityBiliran6549Philippines Griffith Climate Action Beacon Griffith UniversityParklands DriveSouthportGold CoastQueensland4222Australia Laboratoire de Geologie IPSLCNRSUMR 8538Ecole Normale SuperieurePSL UniversityParisFrance Univ.Lille Institut Mines-TelecomUniv.ArtoisJuniaULR 4515LGCgELaboratoire de Genie Civil et Geo-EnvironnementF-59000LilleFrance Department of Biology and General Ecology Faculty of Ecology and Environmental SciencesTechnical University in ZvolenMasaryka 2496001ZvolenSlovakia Institute of Forest Management Ukrainian National Forestry UniversityLvivUkraine Forest Biometrics Laboratory–Faculty of Forestry Stefan Cel Mare University of SuceavaUniversitații Street Number.13Suceava720229Romania

Primary forests are spatially diverse terrestrial ecosystems with unique characteristics,being naturally regenerative and heterogeneous,which supports the stability of their carbon storage through the accumulation of live and dead ***,little is known about the interactions between biomass stocks,tree genus diversity and structure across a temperate montane primary ***,we investigated the relationship between tree structure(variability in basal area and tree size),genus-level diversity(abundance,tree diversity)and biomass stocks in temperate primary mountain forests across Central and Eastern *** used inventory data from726 permanent sample plots from mixed beech and spruce across the Carpathian *** used nonlinear regression to analyse the spatial variability in forest biomass,structure,and genus-level diversity and how they interact with plot-level tree age,disturbances,temperature and *** found that the combined effects of genus and structural indices were important for addressing the variability in biomass across different spatial *** processes in disturbance regimes and uneven tree age support forest hete rogeneity and the accumulation of live and dead biomass through the natural regeneration,growth and decay of the forest *** complexities in basal area index,supporte d by genus-level abundance,positively influence total biomass stocks,which was modulated by tree age and *** forests showed higher tree density and basal area than mixed beech forests,though mixed beech still contributes significantly to biomass across *** heterogeneity was strongly influenced by complexities in forest composition(tree genus diversity,structure).We addressed the importance of primary forests as stable carbon stores,achieved through structure and *** such ecosystems is critical for ensuring the stability of the primary forest,carbon store and biodiversity into the future.

关键词： Biodiversity indicators Biomass carbon stock Ecosystem functioning Forest composition Primary forest structure Tree size distribution

Artificial enhancement of sturgeon stock in freshwater reservoirs:A case study on sterlet Acipenser ruthenus of the Kama reservoir

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Aquaculture and Fisheries 2024年第2期9卷 287-294页

作者： pavel B.Mikheev Semyon N.Kazarinov Alla G.Melnikova Stanislav V.Ponosov Nikolai G.Petrenko Andrei I.Nikiforov Alexey Yu Puzik Olga N.Elchenkova Perm State National Research University Perm614990Russia Khabarovsk Branch of the Federal State Budget Scientific Institution“Russian Federal Research Institute of Fisheries and Oceanography”“KhabarovskNIRO” Khabarovsk680038Russia Perm Branch of the Federal State Budget Scientific Institution“Russian Federal Research Institute of Fisheries and Oceanography”“PermNIRO” Perm614991Russia Federal State Budget Scientific Institution“Russian Federal Research Institute of Fisheries and Oceanography”“VNIRO” Moscow117454Russia Moscow State Institute of International Relations(University)of the Ministry for Foreign Affairs of Russia“MGIMO” Moscow117454Russia Department of State Control Supervision and Protection of Aquatic Biological Resources for Perm KraiMiddle-Volga Regional Office of the Federal Fishery AgencyPerm614990Russia

The paper presents the results of the sterlet sturgeon Acipenser ruthenus reintroduction into the Kama Reservoir(Perm Krai,Russia)by sterlet fry from hatcheries into the reservoir since *** effectiveness of hatchery releases was evaluated by monitoring gillnet sampling *** results showed that the species was reported throughout entire Kama Reservoir,which contrasts with 1988-1994 data,when the species was registered only at the upper part of the reservoir near the Kama River *** highest number and biomass values of catch per unit effort(CPUE)of the sterlet were found in submerged river channels-the deepest habitats with flow conditions which are close to the ecological requirements of the *** distribution of the sterlet within the channel biotopes of the reservoir is defined by reduced *** biggest individuals and the widest size range of the sterlet were typical for the upper area of the reservoir and Chusovskoy Bay,which have the greatest *** smallest sizes were typical for fish from catches near the dam of the reservoir,which is consistent with the published data on the distribution of sterlet in reservoir *** presented results may indicate the artificial formation of the sterlet stock in the Kama Reservoir maintained by hatchery *** revealed distribution of the sterlet in the reservoir determines the direction of further research on natural reproduction and thus formation of an artificially formed ***,future studies are required to assess the possibility of hybridization of the sterlet of artificial origin with natural populations of the species,since the low genetic diversity of the sterlet released into the Kama Reservoir which can lead to irreversible loss of genetic individuality of the natural stocks of the species in the catchment of upper course of the Kama River.

关键词： Sterlet Acipenser ruthenus Kama reservoir Hatchery releases CPUE Artificial stock formation

极地冰盖钻孔孔壁截面形态高精度测量方法与装置优化设计

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极地研究 2024年

作者：柏洪亮张楠 pavel Talalay 陈艳吉刘昀忱范晓鹏宫达韩博吉林大学建设工程学院吉林大学地球探测科学与技术学院吉林大学极地科学与工程研究院

极地冰川钻探已成为了极地科学研究的热点,而极地冰盖钻孔孔壁截面形态数据能够提供冰川运动规律和冰盖稳定性等信息。本文针对吉林大学研制的极地冰盖钻孔高精度物理参数检测的测井仪对于钻孔孔壁截面形态的测量需求,设计了一种新型测... 详细信息

极地冰川钻探已成为了极地科学研究的热点,而极地冰盖钻孔孔壁截面形态数据能够提供冰川运动规律和冰盖稳定性等信息。本文针对吉林大学研制的极地冰盖钻孔高精度物理参数检测的测井仪对于钻孔孔壁截面形态的测量需求,设计了一种新型测量装置,其结构精简,测量精度高,对零部件的维护与修理也十分便捷。为验证这种测量装置结构的合理性与精度,文章还对该装置结构及其重要零部件进行了数值模拟分析和实验验证。同时针对该测量装置结构中存在的不足,提出了改进方法,该方法提高了该测量装置的测量精度和数据处理便捷性。以上的改进既扩大了该测量装置的适用范围,也使其适用于各种尺寸钻孔横截面形态的测量,为极地冰盖钻孔孔壁截面形态的高精度测量提供了一种有力工具,有利于推动对冰川运动规律和冰盖稳定性等方面的研究。

关键词：极地冰盖测量装置孔径测量模拟分析

Using Optical Tweezers to Study the Friction of the Red Blood Cells

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Advances in Bioscience and Biotechnology 2024年第2期15卷 100-111页

作者： Edoukoua Jean Michel Konin pavel Yale Abadê Ange-Boris N’guessan Kouassi Benoit Kouakou Abaka Michel Kouacou Eugene Megnassan Département des Sciences et Techniques Université Alassane Ouattara Bouaké C&#244te d’Ivoire Laboratoire d’Instrumentation Image et Spectroscopie (L2IS) Institut National Polytechnique Félix Houphou&#235t-Boigny (INPHB) Yamoussoukro C&#244te d’Ivoire Classes préparatoires aux grandes Ecoles Université de San Pedro San Pedro C&#244te d’Ivoire Laboratoire de Physique Fondamentale et Appliquée Université Nangui Abrogoua (UNA) Abidjan C&#244te d’Ivoire

In the last two decades the study of red blood cell elasticity using optical tweezers has known a rise appearing in the scientific research with regard to the various works carried out. Despite the various work done, no study has been done so far to study the influence of friction on the red blood cell indentation response using optical tweezers. In this study, we have developed a new approach to determine the coefficient of friction as well as the frictional forces of the red blood cell. This approach therefore allowed us to simultaneously carry out the indentation and traction test, which allowed us to extract the interfacial properties of the microbead red blood cell couple, among other things, the friction coefficient. This property would be extremely important to investigate the survival and mechanical features of cells, which will be of great physiological and pathological significance. But taking into account the hypothesis of friction as defined by the isotropic Coulomb law. The experiment performed for this purpose is the Brinell Hardness Test (DB).

关键词： Friction Indentation Optical Tweezers Tribology Red Blood Cells

Human Eosinophil Cell Manipulation by Optical Tweezers

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Open Journal of Biophysics 2024年第3期14卷 330-338页

作者： pavel Yale Jean Michel Edoukoua Konin Abadê Ange-Boris N’guessan Michel Abaka Kouacou Jérémie T. Zoueu Laboratoire dInstrumentation Image et Spectroscopie (L2IS) Institut National Polytechnique Houphout-Boigny (INPHB) Yamoussoukro Cte dIvoire Laboratoire de Chimie et de Physique Appliques Sciences et Techniques Universit Alassane Ouattara Bouak Cte dIvoire

In this work, lateral deformation of human eosinophil cell during the lateral indentation by an optically trapped microbead of diameter 4.5 µm is studied. The images were captured using a CCD camera and the Boltzmann statistics method was used for force calibration. Using the Hertz model, we calculated and compared the elastic moduli resulting from the lateral force, showing that the differences are important and the force should be considered. Besides the lateral component, the setup also allows us to examine the lateral cell-bead interaction. The mean values of the properties obtained, in particular the elastic stiffness and the shear stiffness, were Eh = (37.76 ± 2.85) µN/m and Gh = (12.57 ± 0.32) µN/m. These results show that the lateral indentation can therefore be used as a routine method for cell study, because it enabled us to manipulate the cell without contact with the laser.

关键词： Optical Tweezers Human Eosinophil Cell Indentation Shear Stiffness

Battery health management-a perspective of design,optimization,manufacturing,fault detection,and recycling

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Energy Storage and Saving 2024年第3期3卷 190-208页

作者： pavel M.Roy Harsh H.Sawant Pratik P.Shelar Prashil U.Sarode S.H.Gawande Industrial Tribology Laboratory Department of Mechanical EngineeringM.E.S.College of EngineeringSavitribai Phule Pune UniversityPune411007India

This paper explores the key aspects of battery technology,focusing on lithium-ion,lead-acid,and nickel metal hydride(NiMH)*** delves into manufacturing processes and highlighting their significance in optimizing battery *** addition,the study investigates battery fault detection,emphasizing the importance of early diagnosis using artificial intellignece(AI)and machine learning(ML)*** paper also addresses battery recycling techniques,discussing methods such as pyrometallurgy,hydrometallurgy,mechanical separation,and electrodialysis,considering their environmental *** comprehensive analysis sheds light on the evolution of battery technology and its role in sustainable energy systems.

关键词： Battery health Manufacturing Fault detection Recycling

Interaction of water droplets with pyrolyzing coal particles and tablets

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Defence Technology（防务技术） 2023年第12期30卷 1-12页

作者： Anastasia Islamova pavel Tkachenko pavel Strizhak National Research Tomsk Polytechnic University Heat and Mass Transfer Laboratory30 Lenin AvenueTomsk634050Russia

The paper presents the experimental research findings for the patterns of collisions of water droplets with pressed tableted samples used as substrates and with small particles of a pyrolyzing solid *** coal samples were ***-substrate interactions were studied when varying the droplet diameter in the range from 1 to 4 mm and velocity from 0.5 to 4 m/*** corresponded to the Weber number range of *** coal tablet surface temperature was varied from 20 to 700℃.In the interactions of water droplets(0.7-1.5 mm in diameter,pre-collision velocity from 1 to 3 m/s)with coal particles(with a size of 0.2-1 mm,pre-collision velocity 0.7-2 m/s),the temperature of the latter was varied in the range of 330-480℃.The following regimes of the interaction of droplets with solid particles during chemical reactions and phase transformations were distinguished:spreading/agglomeration and break-up/*** in the characteristics of the interaction of water droplets with coal particles at varying temperatures were ***-particle interaction regime maps for B(We),We(Oh)and We(Ca)were *** collision regime boundaries were described using fitted curves that can be utilized to develop the existing mathematical models of droplet-particle collisions in *** was established that the gaseous volatile production in coal pyrolysis has a modest effect on the regimes and characteristics of the droplet destruction in the temperature range under consideration(20-700℃).

关键词： Droplet Particle Solid substrate Collision Agglomeration Separation

Influence of stress path change on the resistance to plastic deformation of cold rolled sheets

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Journal of University of Science and Technology Beijing 2005年第6期12卷 521-526页

作者： pavel Huml Metal Forming Department of Materials Science and Engineering The Royal Institute of Technology 10044 Stockholm Sweden

Flat workpieces have been tested in order to investigate the influence of stress path change （loading mode） while keeping strain path unchanged. These investigations are pertinent to the testing of cold rolled strips and to subsequent forming. The workpieces which first compressed by plane strain compression in thickness direction were then tested in perpendicular direction in order to measure the influence of strain and stress path. The tension workpieces came from flat die compression test at different deformation histories. Two different materials were investigated： 18/8 Ti stainless steel and AW-1050 aluminium. The results show that the plastic flow by tension in lengthwise direction after pre-strain by compression in thickness direction will begin at an appreciably lower stress than that of the workpieces unloaded after pre-compression. Comparing with two materials, it can be seen that both 18/8 Ti stainless steel and AW-1050 aluminium behave similarly. The drop in yield stress is lower for AW-1050 aluminium than that for 18/8 Ti stainless steel. However, reloading in different directions than in the precious step results in significantly higher strain hardening.

关键词： cold working plastic deformation strain path stress path loading mode flow stress yield stress strain hardening

葡萄VvMET1-1基因在葡萄和拟南芥中的功能研究

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中外葡萄与葡萄酒 2024年第3期 1-12页

作者：王风霞丁亭亭刘蕙萍李科杨国伟李傲张庆田 Chebukin pavel 任凤山王鹏飞山东省葡萄研究院山东济南250100 俄罗斯瓦维洛夫植物研究所海参崴690014 山东省农业科学院山东济南250100 山东省酿酒葡萄与葡萄酒技术创新中心山东烟台265600

DNA甲基化修饰对于植物的生长发育十分重要,而MET1是植物中重要的甲基转移酶,能维持植物的CG位点甲基化修饰。为了研究葡萄MET1基因的功能及对植物发育的影响,将葡萄VvMET1-1基因转入葡萄胚性愈伤组织和拟南芥中进行研究。本研究选择35S... 详细信息

DNA甲基化修饰对于植物的生长发育十分重要,而MET1是植物中重要的甲基转移酶,能维持植物的CG位点甲基化修饰。为了研究葡萄MET1基因的功能及对植物发育的影响,将葡萄VvMET1-1基因转入葡萄胚性愈伤组织和拟南芥中进行研究。本研究选择35S::VvMET1-1-GFP表达载体转入葡萄胚性愈伤组织后检测到明显的GFP信号,且该胚性愈伤组织能被成功诱导为体细胞胚,表明VvMET1-1首次被成功转入葡萄胚性愈伤组织中并且不影响胚性愈伤组织的发育和分化。VvMET1-1被转入拟南芥中发现,该基因能影响拟南芥叶片的长度和宽度,但是不影响植株形态和种子发育;转录组数据分析表明,许多逆境胁迫、生长素、种子萌发、果实成熟、脱落酸和茉莉酸合成相关的基因差异表达;甲基化组结果显示,拟南芥过表达VvMET1-1后CG和CHH位点甲基化水平分别发生了明显的上调和下调,且DNA甲基化差异区(DMR)的类型主要是CG和CHH型,因此推测VvMET1-1可能通过调控DNA甲基化水平的变化影响下游基因的表达,进而调控拟南芥的生长发育。

关键词：葡萄胚性愈伤组织 VvMET1-1 转录组测序