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Heat-induced mortality and expression of heat shock proteins in Colorado potato beetles treated with imidacloprid

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Insect Science 2016年第4期23卷 548-554页

作者： Jie Chen Ai Kitazumi Jasper Alpuerto andrei Alyokhin Benildo de los Reyes School of Biology and Ecology University of Maine Orono ME 04469 USA Department of Entomology LouisianaState University Baton Rouge LA 70803 USA.

The Colorado potato beetle is an important pest of solanaceous plants in the Northern Hemisphere. Better understanding of its physiological responses to temperature stress and their interactions with still-prevalent chemical control has important implications for the management of this insect. We measured mortality and expression of the Hsp70 heat shock proteins in the Colorado potato beetle larvae exposed to sublethal concentration of the commonly used insecticide imidacloprid, and to supraoptimal temperatures. Both turned out to be significant stress factors, although induction of Hsp70 by imidacloprid observed in the present study was low compared to its induction by the heat. The two factors also interacted with each other. At an extreme temperature of 43 ~C, exposure to a sublethal dose of imidacloprid resulted in a significant rise in larval mortality, which was not observed at an optimal temperature of 25 ~C. Heat-stressed larvae also failed to respond to imidacloprid by producing more Hsp70. These findings suggest that when field rates of insecticides become insufficient for killing the exposed beetles under optimal temperature conditions due to the evolution of resistance in beetle populations, they may still reduce the probability of resistant beetles surviving the heat shock created by using propane flamers as a rescue treatment.

关键词： chemical stress climate change heat stress insecticide resistance integratedpest management Leptinotarsa decemlineata (Say)

Parallel Algorithm and Software for Image Inpainting via Sub-Riemannian Minimizers on the Group of Rototranslations

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Numerical Mathematics(Theory,Methods and Applications) 2013年第1期6卷 95-115页

作者： Alexey P.Mashtakov andrei A.Ardentov Yuri L.Sachkov Program Systems Institute Pereslavl-ZalesskyRussia

The paper is devoted to an approach for image inpainting developed on the basis of neurogeometry of vision and sub-Riemannian *** is realized by completing damaged isophotes(level lines of brightness)by optimal curves for the left-invariant sub-Riemannian problem on the group of rototranslations(motions)of a plane SE(2).The approach is considered as anthropomorphic inpainting since these curves satisfy the variational principle discovered by neurogeometry of vision.A parallel algorithm and software to restore monochrome binary or halftone images represented as series of isophotes were *** approach and the algorithm for computation of completing arcs are presented in detail.

关键词： Image inpainting sub-Riemannian geometry neurogeometry of vision group of rototranslations of a plane parallel software

Hybrid Triboelectric-Electromagnetic Nanogenerators for Mechanical Energy Harvesting:A Review

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Nano-Micro Letters 2021年第12期13卷 163-220页

作者： Joao V.Vidal Vladislav Slabov andrei L.Kholkin Marco P.Soares dos Santos Department of Physics and CICECO-Aveiro Institute of Materials University of Aveiro3810-193 AveiroPortugal Department of Physics and I3N University of Aveiro3810-193 AveiroPortugal Laboratory of Functional Low-Dimensional Structures National University of Science and Technology MISISMoscowRussia Department of Mechanical Engineering Centre for Mechanical Technology and Automation(TEMA)University of Aveiro3810-193 AveiroPortugal

Motion-driven electromagnetictriboelectric energy generators(E-TENGs) hold a Hybrid triboelectric-electromagnetic generators C A Bgreat potential to provide higher voltages,higher currents and wider operating bandwidths than Cantilever generators1 μm both electromagnetic and triboelectric generators Rotating generatorsSliding generators standing alone. Therefore,they are promising solutions to autonomously supply a broad range of Flexible blade generators Magnetoelectric highly sophisticated devices. This paper provides generators a thorough review focused on major recent breakLinear generators Multidimensional generators throughs in the area of electromagnetic-triboelectric vibrational energy harvesting. A detailed Pendulum generators analysis was conducted on various architectures including rotational,pendulum,linear,sliding,cantilever,flexible blade,multidimensional and 1 cm magnetoelectric,and the following hybrid technologies. They enable highly e cient ways to harvest electric energy from many forms of vibrational,rotational,biomechanical,wave,wind and thermal sources,among others. Open-circuit voltages up to 75 V,short-circuit currents up to 60 mA and instantaneous power up to 144 mW were already achieved by these nanogenerators. Their transduction mechanisms,including proposed models to make intelligible the involved physical phenomena,are also overviewed here. A comprehensive analysis was performed to compare their respective construction designs,external excitations and electric outputs. The results highlight the potential of hybrid E-TENGs to convert unused mechanical motion into electric energy for both large-and small-scale ***,this paper proposes future research directions toward optimization of energy conversion e ciency,power management,durability and stability,packaging,energy storage,operation input,research of transduction mechanisms,quantitative standardization,system integration,miniaturization and multi-energy hybrid cells.

关键词： E-TENG Hybrid triboelectric-electromagnetic Nanogenerators Energy harvesting

Photoluminescence control by hyperbolic metamaterials and metasurfaces:a review

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Opto-Electronic Advances 2021年第8期4卷 30-56页

作者： Leonid Yu.Beliaev Osamu Takayama Pavel N.Melentiev andrei V.Lavrinenko DTU Fotonik-Department of Photonics Engineering Technical University of Denmark0rsteds Plads 343DK-2800 Kgs.LyngbyDenmark Institute of Spectroscopy RAS Moscow 108840Russia Higher School of Economics National Research UniversityMoscow 101000Russia

Photolu min esce nee in clud ing fluoresce nee plays a great role in a wide variety of applicati ons from biomedical sensing and imag ing to optoelectr on ***,the enhan ceme nt and con trol of photolu min esce nee has imme nse impact on both fun dame ntal scie ntific research and aforeme nti oned applicati *** various nano phot tonic schemes and nanostructures to enhance the photoluminescence,we focus on a certain type of nanostructures,hyperbolic metamaterials(HMMs).HMMs are highly ani sotropic metamaterials,which produce intense localized electric ***,HMMs n aturally boost photolu min esce nee from dye molecules,qua ntum dots,n itroge n-vaca ncy cen ters in diam on ds,perovskites and tra nsiti on metal dichalcoge *** provide an overview of various con figuratio ns of HMMs,i nclud ing metal-dielectric multilayers,trenches,metallic nanowires,and cavity structures fabricated with the use of noble metals,transparent conductive oxides,and refractory metals as plasmonic *** also discuss lasing action realized with HMMs.

关键词： fluorescence metamaterials metasurfaces Purcell effect nanophotonics hyperbolic metamaterials

Overview of the microbiota in the gut-liver axis in viral B and C hepatitis

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World Journal of Gastroenterology 2021年第43期27卷 7446-7461页

作者： Maria Adriana Neag andrei Otto Mitre Adrian Catinean Anca Dana Buzoianu Department of Pharmacology Toxicology and Clinical PharmacologyIuliu Hatieganu University of Medicine and Pharmacy of Cluj-NapocaCluj-Napoca 400337Romania Faculty of Medicine Iuliu Hatieganu University of Medicine and Pharmacy of Cluj-NapocaCluj-Napoca 400012Romania Department of Internal Medicine Iuliu Hatieganu University of Medicine and Pharmacy of Cluj-NapocaCluj-Napoca 400006Romania

Viral B and C hepatitis are a major current health issue,both diseases having a chronic damaging effect on the liver and its *** liver disease can lead to even more severe and life-threatening conditions,such as liver cirrhosis and hepatocellular *** years have uncovered an important interplay between the liver and the gut microbiome:the gut-liver *** B and C infections often cause alterations in the gut microbiota by lowering the levels of‘protective’gut microorganisms and,by doing so,hinder the microbiota ability to boost the immune *** aimed at restoring the gut microbiota balance may provide a valuable addition to current practice therapies and may help limit the chronic changes observed in the liver of hepatitis B and C *** review aims to summarize the current knowledge on the anatofunctional axis between the gut and liver and to highlight the influence that hepatitis B and C viruses have on the microbiota balance,as well as the influence of treatments aimed at restoring the gut microbiota on infected livers and disease progression.

关键词： Viral B hepatitis Viral C hepatitis Gut-liver axis Immunomodulation Lipopolysaccharides Short-chain fatty acids

Compressively-strained GaSb nanowires with core-shell heterostructures

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Nano Research 2020年第9期13卷 2517-2524页

作者： Zhongyunshen Zhu Johannes Svensson Axel R.Persson Reine Wallenberg andrei V.Gromov Lars-Erik Wernersson Departm ent of Electrical and Information Technology Lund UniversityBox 11822100 LundSweden Centre for Analysis and Synthesis Lund UniversityBox 12422100 Lundt Sweden NanoLund Lund UniversityBox 11822100 LundSweden EaStCHEM School of ChemistryUniversity of EdinburghEdinburgh EH93FJUK

GaSb-based nanowires in a gate-all-around geometry are good candidates for binary p-type transistors,however they require the introduction of compressive strain to enhance the transport ***,we for the first time demonstrate epitaxial GaSb-GaASxSb1-x core-shell nanowires with a compressively strained *** axial and hydrostatic strain in GaSb core have been measured by X-ray diffraction(XRD)and Raman scattering,*** optimal sample,almost without plastic relaxation,has an axial strain of-0.88%and a hydrostatic strain of-1.46%,leading to a noticeable effect where the light hole band is calculated to be 33.4 meV above the heavy hole band at the *** valence band feature offers more light holes to contribute the transport process,and thus may provide enhanced hole mobility by reducing both the interband scattering and the hole effective *** results show that lattice-mismatched epitaxial core-shell heterostructures of high quality can also be realized in the promising yet demanding GaSb-based system.

关键词： compressive strain GaSb-GaAsxSbi-x core-shell nanowires heterostructure p-type transistors

Quantifying Information via Shannon Entropy in Spatially Structured Optical Beams

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Research 2021年第1期2021卷 780-788页

作者： Maria Solyanik-Gorgone Jiachi Ye Mario Miscuglio andrei Afanasev Alan E.Willner Volker J.Sorger Department of Electrical and Computer Engineering The George Washington UniversityWashingtonDC 20052USA Department of Physics The George Washington UniversityWashingtonDC 20052USA Department of Electrical Engineering at University of Southern California Los AngelesCalifornia 90089USA

While information is ubiquitously generated,shared,and analyzed in a modern-day life,there is still some controversy around the ways to assess the amount and quality of information inside a noisy optical channel.A number of theoretical approaches based on,e.g.,conditional Shannon entropy and Fisher information have been developed,along with some experimental *** of these approaches are limited to a certain alphabet,while others tend to fall short when considering optical beams with a nontrivial structure,such as Hermite-Gauss,Laguerre-Gauss,and other modes with a nontrivial ***,we propose a new definition of the classical Shannon information via the Wigner distribution function,while respecting the Heisenberg *** this definition,we calculate the amount of information in Gaussian,Hermite-Gaussian,and LaguerreGaussian laser modes in juxtaposition and experimentally validate it by reconstruction of the Wigner distribution function from the intensity distribution of structured laser *** experimentally demonstrate the technique that allows to infer field structure of the laser beams in singular optics to assess the amount of contained *** the generality,this approach of defining information via analyzing the beam complexity is applicable to laser modes of any topology that can be described by well-behaved *** Shannon information,defined in this way,is detached from a particular alphabet,i.e.,communication scheme,and scales with the structural complexity of the *** a synergy between the Wigner distribution function encompassing the information in both real and reciprocal space and information being a measure of disorder can contribute into future coherent detection algorithms and remote sensing.

关键词： distribution Spatial complexity

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“智能化”刀具的不二选择

数控机床市场 2022年第5期 78-79页

作者： andrei Petrilin 伊斯卡

前言数控技术(CNC)的发展距今已有七十年历史。早在二十世纪五十年代,制造业的从业者们还对数控加工抱怀疑态度。然而时至今日我们已经很难设想没有数控机床加工的世界将会怎样。在金属切削行业,数控机床作为其中的核心环节甚至决定了... 详细信息

前言数控技术(CNC)的发展距今已有七十年历史。早在二十世纪五十年代,制造业的从业者们还对数控加工抱怀疑态度。然而时至今日我们已经很难设想没有数控机床加工的世界将会怎样。在金属切削行业,数控机床作为其中的核心环节甚至决定了企业的生产能力。当然,数控技术自身也仍在不断地革新和发展进步。

关键词：数控技术金属切削数控机床加工数控加工核心环节制造业刀具智能化

Wittmann Type Strong Laws of Large Numbers for Blockwise m-Negatively Associated Random Variables

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Journal of Mathematical Research with Applications 2016年第2期36卷 239-246页

作者： Guohui ZHANG Henar URMENETA andrei VOLODIN College of Mathematics and Statistics Hengyang Normal University

In this paper, Wittmann type strong laws of large numbers for blockwise mnegatively associated random variables are established which extend and improve the related known works in the literature.

关键词： strong laws of large numbers blockwise m-negatively associated random variables