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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

Boosting the piezoelectric property of relaxor ferroelectric single crystal via active manipulation of defect dipole polarization

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Journal of Materiomics 2023年第1期9卷 166-173页

作者： Qingyuan Hu Huimin Liao Xin Liu Li Jin Kexin Song Yongyong Zhuang Zhuo Xu vladimir ya Shur Xiaoyong Wei Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic ImformationXi'an Jiaotong UniversityXi'an710049China School of Natural Sciences and Mathematics Ural Federal UniversityEkaterinburg620000Russia

To further enhance the property of piezoelectric materials is of great significance to improve the overall performance of electro-mechanical *** in this work,we propose a thermal annealing and high temperature poling approach to achieve significantly enhanced piezoelectricity in Pb(In_(1/2)Nb_(1/2))O_(3)single bondPb(Mg_(1/3)Nb_(2/3))O_(3)single bondPbTiO_(3)(PIN-PMN-PT)crystals with a morphotropic phase boundary(MPB)*** main idea of our approach is to realize a more sufficiently polarized crystal via active manipulation of defects and orientation of defect *** of defect dipoles by the high temperature poling is proved by the piezo-response force ***,a d_(33)of 3300 pC/N and a SE of 0.25%are obtained,nearly 60%higher than that of conventionally poled ***,such a boosting of piezoelectric property is obtained under a maintained Curie *** research not only reveals the active control of defect dipole via modified poling method in the PIN-PMN-PT crystal,but also provides a feasible strategy to further improve the property of piezoelectric materials.

关键词： Piezoelectric property Relaxor ferroelectric single crystals Defects Defect polarization

Tunable order in colloids of hard magnetic hexaferrite nanoplatelets

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Nano Research 2022年第2期15卷 898-906页

作者： Artem A.Eliseev Lev A.Trusov Evgeny O.Anokhin Andrei P.Chumakov vladimir V.Korolev Anastasia E.Sleptsova Peter Boesecke vladimir ya.Shur vladimir yaShur Pavel E.Kazin Andrei A.Eliseev Faculty of Chemistry Moscow State UniversityLeninskie Gory lb3Moscow 119991Russia Department of Materials Science MSU-BIT UniversityShenzhen 517182China Faculty of Materials Science Moscow State UniversityLeninskie Gory lb73Moscow 119991Russia European Synchrotron Radiation Facility Avenue des Martyrs 71Grenoble 38043France School of Natural Sciences and Mathematics Ural Federal UniversityLenin Ave 51Ekaterinburg 620000Russia

Structural ordering in the concentrated magnetic colloids containing 50×5 nm hard magnetic disc-like SrFe_(12)O_(19) nanoparticles was investigated by cryogenic scanning electron microscopy,optical microscopy,magnetic measurements,and small-angle X-ray *** was revealed that macroscopically homogeneous magnetic liquid consists of dynamic threads of stacked *** threads align into quasiperiodic arrays with the distances between individual threads of a few *** also can form pseudodomain structures with -90°domain boundaries realized through T-type thread *** effects of magnetic attraction and electrostatic repulsion on the equilibrium interplatelet distance in the threads were *** was demonstrated that this distance can be tuned by the control of the particles charge and electric double layer screening from Stern layer thickness(-1 nm)to tens of *** was shown that the permanent magnetic field is not able to cause any structural changes in the ordered magnetic liquid phase,while alternating field draws particles apart by their *** variation of interparticle distance up to 6%was achieved using an alternating magnetic field of low *** data were complemented by the theoretical models of screened electrostatic interactions between spherical and platelike magnetic *** last model provides good predictive power and correlates with the experimental *** stabilization energy of the condensed phase in the order of 1-10 kBT was derived from the *** approach allows controlling of an equilibrium interparticle distance and interparticle distance distribution by adjusting the magnetization and surface charge of the particles as well as the ionic strength of the solvent.

关键词： hexaferrite ferrofluid self-assembly colloidal solution

Impact of high strength electromagnetic fields generated by Tesla transformer on plant cell ultrastructure

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Information Processing in Agriculture 2017年第3期4卷 253-258页

作者： Anna Rusakova Igor Nosachev vladimir Lysenko ya Guo Alexander Logvinov Evgeniya Kirichenko Tatyana Varduny Sergey Cherednikov Olga Chugueva Academy of Biology and Biotechnology Southern Federal UniversityRostov-on-DonRussia Department of Physics Southern Federal UniversityRostov-on-DonRussia School of IoT Engineering Jiangnan UniversityWuxiChina

Non-thermal effects of direct electric fields and alternating electromagnetic fields(EMF)have been successfully used in a number of studies and applications in agriculture and *** different kinds of high strength EMF generators,the Tesla transformer(TT)is known as a widely applied,low cost,and troubleproof device,which generates EMF in the range of 2-8 *** of a number of developed and perspective applications of high strength EMFs in agriculture and biotechnology,the EMFs generated by TT,as well as the 1-50 MHz range of high strength EMF still remain unexplored in the fields of plant physiology,ultrastructure studies and *** this work,we have shown that TT-EMFs(4 MHz)induced fast stem and petiole bending,disappearance of cell organelles,vacuolar membranes,and increase of a non-photochemical chlorophyll fluorescence quenching in *** is intriguing that such fatal effects can be evoked in plants by EMFs which are well known as harmless for man at the applied strength and frequency.

关键词： Tesla transformer Steam bending Electromagnetic fields Organelle destruction PhotosystemⅡ

Electrical triggering of earthquakes:results of laboratory experiments at spring-block models

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Earthquake Science 2017年第4期30卷 167-172页

作者： Victor A.Novikov vladimir I.Okunev Vadim N.Klyuchkin Jing Liu Yuri ya.Ruzhin Xuhui Shen Joint Institute for High Temperatures of Russian Academy of Sciences MoscowRussia Institute of Earthquake Science China Earthquake AdministrationBeijingChina Pushkov Institute of Terrestrial Magnetism and Radio Wave Propagation TroitskMoscow RegionRussia Institute of Crustal Dynamics China Earthquake AdministrationBeijingChina

Recently published results of field and laboratory experiments on the seismic/acoustic response to injection of direct current （DC） pulses into the Earth crust or stressed rock samples raised a question on a possibility of electrical earthquake triggering. A physical mechanism of the considered phenomenon is not clear yet in view of the very low current density （10-7-10-s A/m^2） generated by the pulsed power systems at the epicenter depth （5-10 km） of local earthquakes occurred just after the current injection. The paper describes results of laboratory ＂earthquake＂ triggering by DC pulses under conditions of a spring-block model simulated the seismogenic fault. It is experimentally shown that the electric triggering of the laboratory ＂earthquake＂（sharp slip of a movable block of the spring-block system） is possible only within a range of subcritical state of the system, when the shear stress between the movable and fixed blocks obtains 0.98-0.99 of its critical value. The threshold of electric triggering action is about 20 A/m^2 that is 7-8 orders of magnitude higher than estimated electric current density for Bishkek test site （Northern Tien Shan, Kirghizia） where the seismic response to the man-made electric action was observed. In this connection, the electric triggering phenomena may be explained by contraction of electric current in the narrow conductive areas of the faults and the corresponding increase in current density or by involving the secondary triggering mechanisms like electromagnetic stimulation of conductive fluid migration into the fault area resulted in decrease in the fault strength properties.

关键词： Earthquake simulation Spring-block model Electric pulse Triggering threshold

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多无人船通信网络拓扑优化控制算法

控制理论与应用 2016年第12期33卷 1639-1649页

作者：崔亚妮任佳杜文才 SHIKHIN vladimir 海南大学信息科学技术学院海南海口570228 海南大学南海海洋资源利用国家重点实验室海南海口570228 莫斯科动力学院自动化与计算机工程学院俄罗斯莫斯科111250

为构建有效、可靠的多无人船网络拓扑结构,本文提出一种基于改进粒子群优化的多无人船网络拓扑优化控制算法.该算法通过综合考虑网络连通度、链路通信质量、网络连接收益和网络连接成本构建多无人船网络拓扑优化模型.为确保模型与应用... 详细信息

为构建有效、可靠的多无人船网络拓扑结构,本文提出一种基于改进粒子群优化的多无人船网络拓扑优化控制算法.该算法通过综合考虑网络连通度、链路通信质量、网络连接收益和网络连接成本构建多无人船网络拓扑优化模型.为确保模型与应用对象的适配性,重点分析海上无线电波的传播特性,并在此基础上,完成链路通信质量、网络连接收益和网络连接成本的表征.为获得模型的全局最优解,加快模型的收敛速度,在粒子群优化算法的迭代寻优过程中,借鉴电磁场中带电粒子间的相互作用,利用粒子的电荷量动态自适应调整算法的控制参数,当粒子种群多样性小于给定的阈值时,将粒子种群中适应度值最小的粒子作为扰动粒子,引导粒子向未搜索区域移动,克服算法的早熟收敛.仿真结果证明了该算法的有效性.

关键词：无人船拓扑优化电波传播类电磁机制粒子群优化

Human Body Surface Oscillations Remote Measurements by Means of Laser Doppler Interferometer

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Journal of Mathematics and System Science 2012年第7期2卷 404-408页

作者： Larisa A. Glushchenko Fedor A. Zapryagaev vladimir S. Makin Vadim ya. Krokhalev Scientific Research Institute of Optico-electronic Instrument Making Sosnovy Bor 188541 Leningrad Region Russia Ural State Medical Academy EkateHnburg 620000 Russia

Experimental results of remote laser measurement of a time structure of a pulse waves are resulted. Occurrence of the pulse waves are connected with the rhythmic reduction of a myocardittm. Speed of pulse wave＇s propagation does not depend on speed of current of blood, it is defined by diameter of a vessel, by its walls thickness, by elasticity of a vessel, and also by rheological properties of blood. Measurement of parameters of pulse waves is important tbr definition of a condition of cardiovascular system. Ways of measurement of characteristics of pulse waves used now （acoustic, electric, optical） are contact. In some cases, for example, in clinics on treatment of burns and so forth, the question of remote measurement of processes hemodynamics by use of methods of laser sotmding is rather actual. The results described in work have shown outlook of development of laser methods of diagnostics for present purposes. The measurement technique used by authors is based on use of longitudinal Doppler effect which essence consists in change of frequency or length of a wave of radiation at reflection from moving surface. For smoothing the measured signal （clearing from noise） the program developed by authors on the basis of the wavelet-analysis was used. Experimental measurements are shown, that the laser method allows to register distinctly structure of pulse waves which is characterized by two peaks. The results of remote laser measurement of a time structure of a pulse waves confirm the assumption made on the basis of general-theoretical physical positions, that characteristics of pulse waves can be registered on the Doppler effect basis.

关键词： Pulse wave Doppler effect laser remote methods.

Generalization of Abelian Gauge Symmetry, Dark Matter and Cosmological Expansion

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Journal of Modern Physics 2014年第1期5卷 34-43页

作者： Nikolay P. Tretyakov Alexandre ya. Terletsky vladimir N. Lukash Maximo A. Agüero Astro Space Centre of Lebedev Physics Institute Moscow Russia Department of Applied Mathematics State Social University of Russia Moscow Russia Department of Experimental Physics Peoples’ Friendship University of Russia Moscow Russia Facultad de Ciencias Universidad Autonoma del Estado de Mexico Toluca Mexico

A commutative generalization of the U(1) gauge symmetry group is proposed. The two-parametric family of two-connected abelian Lie groups is obtained. The necessity of existence of so-called imaginary charges and electromagnetic fields with negative energy density (dark photons) is derived. The possibilities when the overall Lagrangian represents a sum or difference of two identical Lagrangians for the visible and hidden sectors (i.e. copies of unbroken U(1)) are ruled out by the extended symmetry. The distinction between the two types of fields resides in the fact that for one of them current and electromagnetic kinetic terms in Lagrangians are identical in sign, whereas for another type these terms are opposite in sign. As a consequence, and in contrast to the common case, like imaginary charges attract and unlike charges repel. Some cosmological issues of the proposed hypothesis are discussed. Particles carrying imaginary charges are proposed as one of the components of dark matter. Such a matter would be imaginarily charged on a large scale for the reason that dark atoms carry non-compensated charges. It leads to important predictions for matter distribution, interaction and other physical properties being different from what is observed in dominant dark matter component in the standard model. These effects of imaginary charges depend on their density and could be distinguished in future observations. Dark electromagnetic fields can play crucial dynamical role in the very early universe as they may dominate in the past and violate weak energy condition which provides physical grounds for bouncing cosmological scenarios pouring a light on the problem of origin of the expanding matter flow.

关键词： Cosmology of Theories beyond the SM Cosmic Singularity Dark Energy Theory Dark Matter Theory

Arterial hypertension associated with somatic pathology in present-day practice of internal diseases

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Health 2014年第1期6卷 94-98页

作者： Yurii A. Nikolaev Igor M. Mitrofanov vladimir ya. Polyakov Nina. A. Dolgova Scientific Center of Clinical and Experimental Medicine Siberian Branch of The Russian Academia of Medical Science Novosibirsk Russia

Dynamics of regional and gender features of occurrence of arterial hypertension associated with diseases of gallbladder, biliary ducts and pancreas for 2003-2011 was analyzed. There researched 23,310 patients (9111 males and 14,188 females) treated in clinic of scientific centre of clinical and experimental medicine SB RAMS. Occurrence of such combination, depending on gender, residence (the Novosibirsk region (NR) or yakutia) as well as in age subgroups (16-39, 40-59 and over 60) was estimated. Occurrence of arterial hypertension associated with diseases of gallbladder, biliary ducts and pancreas was observed more in male of Subgroup I, living in NR and yakutia. In 2003-2008 in female of Subgroup III, living in NR comorbidity pathology was observed more frequently than in male. In Subgroup III in female of NR occurrence of combined pathology was maximum (36.6%) 2006-2008, in female of yakutia—38.5% in 2003-2005. Dependence of occurrence of combined pathology on residence was observed in male. In 2003-2011 in male of yakutia combined pathology was observed frequently than in male of NR. Occurrence of comorbidity pathology, depending on gender and age was typical for inhabitants of NR. In Group I comorbidity pathology was frequently observed in male, in Group III—in female. It is necessary to develop regional strategies for observing patients with combined pathologies to improve prevention, rehabilitation and treatment of patients with arterial hypertension associated with diseases of gallbladder, biliary ducts and pancreas.

关键词： Arterial Hypertension Somatic Pathology Comorbidity Siberia North Region