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Polychromatic Fourier-PAM fluorometry and hyperspectral analysis of chlorophyll fluorescence from Phaseolus vulgaris leaves: Effects of green light

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Information Processing in Agriculture 2020年第2期7卷 204-211页

作者： Vladimir Lysenko Ya Guo alexey Kosolapov Elena Usova Tatyana Varduny Vladimir Krasnov Southern Federal University Academy of Biology and BiotechnologyRostov-on-DonRussia Russian Information-Analytical and Water Management Research Center Rostov-on-DonRussia School of IoT Engineering Jiangnan UniversityWuxiChina Rostov State Medical University Department of General and Clinical Biochemistry No.1Rostov-on-DonRussia

Maximal and partial quantum yields of photosystem II(Fv/Fm and Fv–/Fp)in Phaseolus vulgaris leaves were determined in response to the turning on saturating and low(undersaturating)actinic light,*** lights(ML)of blue,green,and red colors were applied simultaneously using a novel method of the polychromatic fast Fourier transforming pulse amplitude modulation(FFT PAM)chlorophyll *** of ML were cross-combined with the colors of low and saturating actinic ***/Fm values measured with the green ML were found to be close to that of red light,whereas application of blue ML leads to lower Fv/*** addition,5-nm resolved excitation spectra were measured to evaluate the dependence between red/far red fluorescence ratios(peak height based–F685/F730,and deconvolved peak square based–F685sq/F730sq)and wavelength of the excitation *** demonstrates that chlorophyll fluorescence ratio red/far red may be dependent on the spectral absorbance of *** data obtained confirm the results of the previous studies which explain high photosynthetic activity of the green light in terms of redistribution of absorbed quanta throughout thickness of the leaf,thus suggesting possible advisability of green light application in greenhouse lighting,especially for the plants having thick leaves.

关键词： Multicolor PAM Fourier transforms Chlorophyll fluorescence Green light Red/far red ratio Greenhouse lighting

Highly selective/enantioselective Pt-ReOx/C catalyst for hydrogenation of L-malic acid at mild conditions

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Journal of Energy Chemistry 2018年第3期27卷 903-912页

作者： Bair S.Bal'zhinimaev Eugene A.Paukshtis alexey P.Suknev Nikita V.Makolkin Boreskov Institute of Catalysis SB RA5 Prospect Akademika Lavrentieva5Novosibirsk 630090Russia

The catalyst preparation strategy was based on a strict introduction sequence of rhenium and platinum precursors and their strong interaction with carbon support resulted in the formation of 0.5 nm Pt-Re Ox species of atomic dispersion, where platinum is metallic, while monolayer rhenium is partially oxidized（Re2＋）. The reaction kinetics was studied taking into account the process of L-malic acid association leading to the formation of inactive cyclic oligomeric species. High TOFs（ca. 50 h-1）, selectivities（ca. 99%）and stability of Pt-Re Ox/C catalysts in aqueous-phase hydrogenation of L-malic acid, which are close to those of the homogeneous pincer type complexes, were revealed at mild conditions（T = 90–130 ℃）. Taking into account that（i） hydrogenation reaction occurred 2–3 orders of magnitude faster than its racemization and（ii） association of L-malic acid dominates at low temperatures and in a concentrated solution,special reaction conditions that allow obtaining chemically and optically（ee 〉 99%） pure（S）-3-hydroxy-γ-butyrolactone and（S）-1,2,4-butanetriol were found. Basing on HAADF-STEM, EDX, XPS, and kinetic studies, the structure of active species and basic reaction pathways are proposed.

关键词： L-malic acid Hydrogenation Enantioselectivity Platinum Rhenium Atomic dispersion

Data-driven approach to learning salience models of indoor landmarks by using genetic programming

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International Journal of Digital Earth 2020年第11期13卷 1230-1257页

作者： Xuke Hu Lei Ding Jianga Shang Hongchao Fan Tessio Novack alexey Noskov Alexander Zipfa GIScience Research Group Institute of GeographyHeidelberg UniversityHeidelbergGermany School of Geography and Information Engineering China University of GeosciencesWuhanPeople’s Republic of China National Engineering Research Center for Geographic Information System WuhanPeople’s Republic of China Department of Civil and Environmental Engineering Norwegian University of Science and TechnologyTrondheimNorway

In landmark-based way-finding,determining the most salient landmark from several candidates at decision points is *** overcome this problem,current approaches usually rely on a linear model to measure the salience of ***,linear models are not always able to establish an accurate quantitative relationship between the attributes of a landmark and its perceived ***,the numbers of evaluated scenes and of volunteers participating in the testing of these models are often *** the aim of overcoming these gaps,we propose learning a non-linear salience model by means of genetic *** compared our proposed approach with conventional algorithms by using photographs of two hundred test scenes collected from two shopping *** hundred volunteers who were not in these environments were asked to answer questionnaires about the collected *** results from this experiment showed that in 76%of the cases,the most salient landmark(according to the volunteers’perception)was correctly predicted by our proposed *** accuracy rate is considerably higher than the ones achieved by conventional linear models.

关键词： Indoor navigation landmarks salience model genetic programming

Acoustic plasmonics of Au grating/Bi2Se3 thin film/sapphire hybrid structures

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Chinese Physics B 2020年第6期29卷 49-53页

作者： Weiwu Li Konstantin Riegel Chuanpu Liu alexey Taskin Yoichi Ando Zhimin Liao Martin Dressel Yuan Yan Physikalisches Institut Universitat StuttgartPfaffenwaldring 5770550 StuttgartGermany State Key Laboratory for Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China Physics Institute II University of Cologne50937 KolnGermany Physikalisches Institut der Universitat Wurzburg 97074 WurzburgGermany Institute for Topological Insulators 97074 WurzburgGermany

The surface plasmon polaritons of the topological insulator Bi2Se3 can be excited by using etched grating or grave structures to compensate the wave vector mismatch of the incident photon and plasmon. Here, we demonstrate novel gold grating/Bi2Se3 thin film/sapphire hybrid structures, which allow the excitation of surface plasmon polaritons propagating through nondestructive Bi2Se3 thin film with the help of gold diffractive gratings. Utilizing periodic Au surface structures,the momentum can be matched and the normal-incidence infrared reflectance spectra exhibit pronounced dips. When the width of the gold grating W(with a periodicity 2 W) increases from 400 nm to 1500 nm, the resonant frequencies are tuned from about 7000 cm-1 to 2500 cm-1. In contrast to the expected ■ dispersion for both massive and massless fermions,where q ~π/W is the wave vector, we observe a sound-like linear dispersion even at room temperature. This surface plasmon polaritons with linear dispersion are attributed to the unique noninvasive fabrication method and high mobility of topological surface electrons. This novel structure provides a promising application of Dirac plasmonics.

关键词： surface plasmon polaritons topological insulator infrared optoelectronics nanophotonics

Analysis of financial development and open innovation oriented fintech potential for emerging economies using an integrated decision‑making approach of MF‑X‑DMA and golden cut bipolar q‑ROFSs

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Financial Innovation 2023年第1期9卷 170-203页

作者： alexey Mikhaylov Hasan Dinçer Serhat Yüksel Financial University under the Government of the Russian Federation MoscowRussia The School of Business İstanbul Medipol UniversityIstanbulTurkey

The purpose of the paper is to identify the factors of financial development that have the greatest impact on open innovation in 7 emerging *** analysis was performed featuring the MF-X-DMA method,as well as its further verification for auto-correlation and *** time period covers years from 2002 to *** article states that the main indicators to improve financial development should enhance the process of bank lending and equity market *** important area is the development of competition by providing equal access to information to all market participants in a continuously refining technical *** analysis with the MF-X-DMA method confirms the statistical significance of this *** article fills the knowledge gap into the link between open innovations and the relatively low capitalization of the modern emerging countries’financial market,low liquidity in small cap stocks at the financial market and concentration of the banking sector,as well as risks arising in the process of *** analysis has also been conducted by generating a novel fuzzy decision-making *** the first stage,the determinants of open innovation-based fintech potential are weighted for the emerging *** this purpose,M-SWARA methodology is taken into consideration based on bipolar q-ROFSs and golden *** second stage of the analysis includes evaluating the emerging economies with the determinants of open innovation-based fintech *** this context,emerging seven countries are examined with ELECTRE *** found the most significant factor is the open innovation-based fintech potential.

关键词： Financial depth Economic monetization Macroeconomic impact Banking sector Concentration

Superheavy Particle Production in High Energy Heavy Ion Collisions

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Journal of Modern Physics 2021年第4期12卷 433-439页

作者： alexey Kurepin Department of Experimental Physics Institute for Nuclear Research Russian Academy of Sciences Moscow Russia

The existence of several TeV superheavy particles (SHPs) is predicted by theories beyond the Standard Model. Particles with a mass exceeding the energy in the center of mass in the collision of protons with protons can be produced in subthreshold heavy ion collisions at the LHC. The purpose of the performed research was to estimate the rate of a rare process of SHPs production. It was shown that the data on the subthreshold production of antiprotons can be explained by the phenomenological parton model. The obtained parton distribution function was used to determine the number of SHPs produced in subthreshold heavy ion collisions at the LHC. In one month of collision of lead with lead, the yield of 16 TeVparticles is about 70 per year. To study the kinematically forbidden phenomena in proton-proton interactions in collisions of heavy nuclei at the LHC, an experiment on the production of antiprotons is proposed in the ALICE fixed target project.

关键词： Particle Physics Heavy Ion Collisions Parton Model Antiproton Production

Improved Responses with Multitaper Spectral Analysis for Magnetotelluric Time Series Data Processing:Examples from Field Data

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Acta Geologica Sinica(English Edition) 2024年第S01期98卷 14-17页

作者： Matthew J.COMEAU Rafael RIGAUD Johanna PLETT Michael BECKEN alexey KUVSHINOV Department of Geoscience&Engineering Delft University of Technology The Netherlands Institute of Geophysics ETHZürichSwitzerland Institut für Geophysik Universität MünsterGermany

In order to attain good quality transfer function estimates from magnetotelluric field data(i.e.,smooth behavior and small uncertainties across all frequencies),we compare time series data processing with and without a multitaper approach for spectral *** are several common ways to increase the reliability of the Fourier spectral estimation from experimental(noisy)data;for example to subdivide the experimental time series into segments,taper these segments(using single taper),perform the Fourier transform of the individual segments,and average the resulting spectra.

关键词： magnetotellurics electrical resistivity time series processing Fourier analysis multitaper

A one-stage model of experimental acute necrotizing pancreatitis in rats

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中国病理生理杂志 2013年第10期29卷 1870-1876页

作者： SARAPULTSEV alexey RANTSEV Maxim SARAPULTSEV Petr MEDVEDEVA Svetlana DANILOVA Irina Institute Immunology and Physiology the Ural Branch of Russian Academy of Sciences

AIM:To establish a one-stage model of experimental acute necrotizing pancreatitis(ANP)in rats characterized by the simplicity of performance and a high degree of ***:ANP modeling in rats was performed based on modification of the ligation model as follows:synthetic material ligature using an atraumatic needle was performed to capture pancreatic gland ducts and marginal duodenum *** tips were exteriorized to the abdominal wall,and the ligature was skinned over to avoid catching intestine *** macroscopic appearance and histological changes were *** biochemical and hemostatic indicators were also ***:Laboratory analysis of rats with experimental ANP showed a pattern of disturbances similar to that observed during pancreatic necrosis in humans as soon as the first *** blood analysis revealed enhanced leukocytosis and alterations in leukogram characteristics,indicating acute *** levels of amylase,aspartate aminotransferase and creatinine significantly increased(P<0.05).Hemostatic indicators showed alterations indicating formation of disseminated intravascular coagulation,and signs of endotoxicosis were *** typical pancreatic necrosis patterns of disturbances were validated by the results of histological ***:Histological changes and laboratory indicators confirm the development of a suitable model of ANP.

关键词： Pancreatitis,acute necrotizing Rats Endotoxemia

Visualization of the electronic phase separation in superconducting K_(x)Fe_(2−y)Se_(2)

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Nano Research 2021年第3期14卷 823-828页

作者： Yujie Chen Juan Jiang Haifeng Yang Pavel Dudin alexey Barinov Zhongkai Liu Haihu Wen Lexian Yang Yulin Chen State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing100084China Department of Physics Clarendon LaboratoryUniversity of OxfordParks RoadOxfordOX13PUUK Advanced Light Source Lawrence Berkeley National LaboratoryBerkeleyCA94720USA School of Physical Science and Technology ShanghaiTech University and CAS-Shanghai Science Research CenterShanghai201210China L’Orme des Merisiers Synchrotron SOLEILSaint Aubin-BP 4891192Gif sur Yvette CedexFrance Elettra-Sincrotrone Trieste TriesteBasovizza34149Italy ShanghaiTech Laboratory for Topological Physics Shanghai200031China National Laboratory of Solid State Microstructures and Department of Physics Nanjing UniversityNanjing210093China Frontier Science Center for Quantum Information Beijing100084China

Type-II iron-based superconductors(Fe-SCs),the alkali-metal-intercalated iron selenide A_(x)Fe_(2−y)Se_(2)(A=K,Tl,Rb,etc.)with a superconducting transition temperature of 32 K,exhibit unique properties such as high Néel temperature,Fe-vacancies ordering,antiferromagnetically ordered insulating state in the phase diagram,and mesoscopic phase separation in the superconducting *** particular,the electronic and structural phase separation in these systems has attracted intensive attention since it provides a platform to unveil the insulating parent phase of type-II Fe-SCs that mimics the Mott parent phase in *** this work,we use spatial-and angle-resolved photoemission spectroscopy to study the electronic structure of superconducting K_(x)Fe_(2−y)Se_(2).We observe clear electronic phase separation of K_(x)Fe_(2−y)Se_(2) into metallic islands and insulating matrix,showing different K and Fe *** the metallic islands show strongly dispersive bands near the Fermi level,the insulating phase shows an energy gap up to 700 meV and a nearly flat band around 700 meV below the Fermi energy,consistent with previous experimental and theoretical results on the superconducting K_(1−x)Fe_(2)Se_(2)(122 phase)and Fe-vacancy ordered K_(0.8)Fe_(1.6)Se_(2)(245 phase),*** results not only provide important insights into the mysterious composition of phase-separated superconducting and insulating phases of K_(x)Fe_(2−y)Se_(2),but also present their intrinsic electronic structures,which will shed light on the comprehension of the unique physics in type-II Fe-SCs.

关键词： spatial-and angle-resolved photoemission spectroscopy(µ-ARPES) iron-based superconductors phase separation electronic structure