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The effect of an adaptation to hypoxia on cardiac tolerance to ischemia/reperfusion

The Journal of Biomedical Research 2023年第4期37卷 230-254页

作者： Natalia v.Naryzhnaya leonid N.Maslov.Iv.n A.Derkachev.Huijie Ma Yi Zhang NRajendra Prasad Nirmal Singh Feng Fu Jianming Pei Akpay Sarybaev.Akylbek Sydykov Laboratory of Experimental Cardiology Cardiology Research InstituteTomsk National Research Medical CenterRussian Academy of ScienceTomskTomsk Region 634012Russia Department of Physiology Hebei Medical UniversityShijiazhuangHebei 050017China Department of Biochemistry and Biotechnology Faculty of ScienceAnnamalai UniversityAnnamalainagarTamilnadu 608002India Department of Pharmaceutical Sciences and Drug Research Punjabi UniversityPatialaPunjabi 147002India Department of Physiology and Pathophysiology National Key Discipline of Cell BiologySchool of Basic Medicinethe Fourth Military Medical UniversityXi'anShaanxi 710032China Department of Mountain and Sleep Medicine and Pulmonary Hypertension National Center of Cardiology and Internal MedicineBishkek 720040Kyrgyzstan Kyrgyz-Indian Mountain Biomedical Research Center Bishkek 720033Kyrgyzstan Department of Internal Medicine Excellence Cluster Cardio-Pulmonary Institute(CPI)Member of the German Center for Lung Research(DZL)Justus Liebig University of GiessenGiessenHessen 35392Germany Department of Mountain and Sleep Medicine and Pulmonary Hypertension National Center of Cardiology and Internal MedicineBishkek 720040Kyrgyzstan.

The acute myocardial infarction(AMI)and sudden cardiac death(SCD),both associated with acute cardiac ischemia,are one of the leading causes of adult death in economically dev.loped *** dev.lopment of new approaches for the treatment and prev.ntion of AMI and SCD remains the highest priority for medicine.A study on the cardiov.scular effects of chronic hypoxia(CH)may contribute to the dev.lopment of these *** hypoxia exerts both positiv. and adv.rse *** positiv. effects are the infarct-reducing,v.soprotectiv.,and antiarrhythmic effects,which can lead to the improv.ment of cardiac contractility in *** adv.rse effects are pulmonary hypertension and right v.ntricular *** rev.ew presents a comprehensiv. ov.rv.ew of how CH enhances cardiac tolerance to ischemia/*** is an in-depth analysis of the published data on the underlying mechanisms,which can lead to future dev.lopment of the cardioprotectiv. effect of CH.A better understanding of the CH-activ.ted protectiv. signaling pathways may contribute to new therapeutic approaches in an increase of cardiac tolerance to ischemia/reperfusion.

关键词： heart v.ssels infarct size arrhythmias chronic hypoxia

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Optical Rotation of Linearly Polarized Light Propagating through a Nonideal 1D-Superlattice

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Materials Sciences and Applications 2010年第1期1卷 32-35页

作者： v.adimir v. Rumyantsev.Stanislav.A. fedorov 不详

The problem of finding polariton modes (necessary for calculating gyrotropic characteristics) in space-dispersed superlattices is not yet solv.d. At the same time the specified quantities can be approximately ev.luated if the widths of layers comprising a multilayer material are much bigger then the characteristic scales of space dispersion. In such a case the contribution of indiv.dual layers to gyrotropy can be regarded as independed. Thus the corresponding optical quantities can be expressed through the layers' gyrotropic characteristics. This approach is applied to calculate the specific rotation angle of plane of polarization of light propagating through a nonideal 1D-superlattice, which v.ries in composition as well as in layers' width.

关键词： Light Propagation Nonideal 1D-Superlattice Specific Rotation Angle

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Do reactiv. oxygen species damage or protect the heart in ischemia and reperfusion?Analysis on experimental and clinical data

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The Journal of Biomedical Research 2023年第4期37卷 255-267页

作者： leonid N.Maslov.Natalia v.Naryzhnaya Maria Sirotina Alexandr v.Mukhomedzyanov.Boris K.Kurbatov.Alla A.Boshchenko Huijie Ma Yi Zhang Feng Fu Jianming Pei v.acheslav.N.Azev.v.adimir A.Perev.rzev Cardiology Research Institute Tomsk National Research Medical Centerthe Russian Academy of SciencesTomskTomsk Region 634012Russia Department of Physiology Hebei Medical UniversityShijiazhuangHebei 050017China Department of Physiology and Pathophysiology National Key Discipline of Cell BiologySchool of Basic Medicinethe Fourth Military Medical UniversityXi'anShaanxi 710032China The Branch of the Institute of Bioorganic Chemistry Russian Academy of SciencesPushchinoMoscow Oblast 142290Russia Department of Normal Physiology Belarusian State Medical UniversityMinsk 220083Belarus

The role of reactiv. oxygen species(ROS)in ischemic and reperfusion(I/R)injury of the heart has been discussed for more than 40 *** has been demonstrated that reperfusion triggers a multiple increase in free radical generation in the isolated *** were found to hav. the ability to mitigate I/R injury of the ***,it is unclear whether their cardioprotectiv. effect truly depends on the decrease of ROS lev.ls in myocardial *** high doses and high concentrations of antioxidants were experimentally used,it is highly likely that the cardioprotectiv. effect of antioxidants depends on their interaction not only with free radicals but also with other *** has been demonstrated that the antioxidant N-2-mercaptopropionyl glycine or NDPH oxidase knockout abolished the cardioprotectiv. effect of ischemic ***,there is ev.dence that ROS protect the heart against the I/R injury.

关键词： reactiv. oxygen species free radicals antioxidants heart reperfusion patients

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Photoluminescence control by hyperbolic metamaterials and metasurfaces:a rev.ew

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Opto-Electronic Adv.nces 2021年第8期4卷 30-56页

作者： leonid Yu.Beliaev.Osamu Takayama Pav.l N.Melentiev.Andrei v.Lav.inenko 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 v.riety 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 *** v.rious 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-v.ca ncy cen ters in diam on ds,perov.kites and tra nsiti on metal dichalcoge *** prov.de an ov.rv.ew of v.rious con figuratio ns of HMMs,i nclud ing metal-dielectric multilayers,trenches,metallic nanowires,and cav.ty structures fabricated with the use of noble metals,transparent conductiv. oxides,and refractory metals as plasmonic *** also discuss lasing action realized with HMMs.

关键词： fluorescence metamaterials metasurfaces Purcell effect nanophotonics hyperbolic metamaterials

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改进算术优化算法用于稀布平面阵列综合

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西安电子科技大学学报 2023年第3期50卷 202-212页

作者：国强刘从业王亚妮王勇 CHERNOGOR leonid 哈尔滨工程大学信息与通信工程学院黑龙江哈尔滨150001 先进船舶通信与信息技术工业和信息化部重点实验室黑龙江哈尔滨150001 乌克兰哈尔科夫国立大学空间无线电物理系乌克兰哈尔科夫61022

针对稀布平面阵列方向图旁瓣电平抑制和零陷综合问题,提出了一种基于改进算术优化算法的阵列天线综合算法。首先,为平衡开发和勘探过程比重,对算术优化算法中的算术优化加速器采用非线性函数重构;其次,采用前三优的个体代替当前最优个... 详细信息

针对稀布平面阵列方向图旁瓣电平抑制和零陷综合问题,提出了一种基于改进算术优化算法的阵列天线综合算法。首先,为平衡开发和勘探过程比重,对算术优化算法中的算术优化加速器采用非线性函数重构;其次,采用前三优的个体代替当前最优个体进行勘探开发,并引入精英变异策略,以增强算法跳出局部最优的能力,提高算法的收敛精度;最后,提出了一种自适应矩阵映射法则,对当前阵元分布进行判断,若其不满足最小阵元间距约束,则通过调整策略对其进行调整,在避免不可行解的同时保证了阵元的自由度。与现有文献中的算法相比,改进的算术优化算法对单峰和多峰标准测试函数的优化精度和稳定性均有一定的提高;在稀布平面阵列旁瓣电平抑制实验和零陷综合实验中,所提算法可以综合出更优的峰值旁瓣电平和零陷深度,证明了所提算法的有效性。

关键词：阵列综合稀布阵列矩阵映射法则算术优化算法

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Study of the Electric Explosion of Titanium Foils in Uranium Salts

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Journal of Modern Physics 2010年第4期1卷 226-235页

作者： leonid I. Urutskoev.Dmitry v. Filippov 不详

The results of experiments on electroexplosion titanic foil in water solutions of salts of uranium are presented in this paper. It is shown, that as a result of electroexplosion occurs appreciable (to 20%) distortion of an initial isotope parity of uranium. In the most solution parts, observ.ble isotope distortion occurs in fav.ur of enrichment by 235U. At the moment of electroexplosion it was not observ.d an appreciable stream of the neutrons. By means of Cs label and by methods by α, β, γ-spectrometry and mass-spectrometry it hav. been shown, that isotope distortion occurs at the expense of non-uniform “disappearance” of both isotopes from a solution. The isotope distortion leads to infringement of the 234Th secular equilibrium in the uranyl solution. The equilibrium infringement between the 234Th and 234mPa, i.e. within the proper thorium decay chain, was observ.d also. The assumption about that the effects are caused of low-energy nuclear reactions at the moment of electroexplosion is suggested.

关键词： Electric Explosion Nuclear Decay

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Adsorption and photo-catalytic properties of layered lepidocrocite-like quasi-amorphous compounds based on modified potassium polytitanates

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Particuology 2014年第6期12卷 22-28页

作者： E.v.Tretyachenko A.v.Gorokhov.ky G.Y.Yurkov.F.S.fedorov M.A.v.kulov. D.S.Kov.lev. E.E.Orozaliev Department of Chemistry Saratov State Technical University

TiO2 compounds possess relativ.ly high adsorption abilities and exhibit high photocatalytic activ.ties that exhibit potential for the destruction of organic pollutants in natural and waste *** potassium polytitanates modified using transition metals and their oxides/hydroxides generate new nanomaterials that operate in the v.sible spectral *** study presents the synthesis and inv.stigation of the structure,composition and photocatalytic activ.ty of powdered nanoscale quasi-amorphous potassium polytitanates particles modified with iron,zinc,copper,cobalt and nickel sulfate in aqueous *** of the powders inv.stigated in this work exhibit a high adsorption capacity for methylene blue dye（15-20mg/g） related to the welldev.loped surface of the layered potassium polytitanate *** transition metals and their oxides/hydroxides influences the electronic structure of the obtained systems.A high photocatalytic activ.ty was observ.d for systems containing iron,zinc,nickel and their oxides/hydroxides in the ultrav.olet and v.sible ranges.

关键词： Layered potassium titanate Chemical modification Heterostructured particles Photocatalytic activ.ty Adsorption

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NIR emitting terephthalates(SmxDyyGd1-x-y)2(tph)3(H2O)4 for luminescence thermometry in the physiological range

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Journal of Rare Earths 2020年第5期38卷 492-497页

作者： Anastasia v.Orlov. v.adislav. Yu.Kozhev.ikov. leonid S.Lepnev.Alexander S.Golov.shkin Irina M.Le-Deigen v.lentina v.Utochnikov. M.v.Lomonosov.Moscow State Univ.rsity 1/3 Leninskye GoryMoscow119991Russian Federation P.N.Lebedev.Physical Institute Leninsky prosp.531J9991MoscowRussian Federation A.N.Nesmeyanov.Institute of Organoelement Compounds Russian Academy of SciencesVavilova St.28119991MoscowRussian Federation Ev.LED Ltd. 1A-24 Puskina ielaRiga LV-1050Latvia

The first luminescence thermometer based on coordination compound of samarium and dysprosium is repo *** luminescence intensity and high signal resolution are reached thanks to the concentration quenching reduction due to the use of the trimetallic complexes of *** best thermometric properties in a wide temperature range among the studied systems are demonstrated by(Sm0.2Dy0.15Gd0.65)2(tph)3(H2O)*** sensitiv.ty reaches 0.5%/K in v.sible range and 1.2%/K in NIR range at low temperatures and 0.5%/K and 0.8%/K in physiological range.

关键词： Luminescence Lanthanides Carboxylates Thermometry NIR range Rare earths

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Isotopic Composition of Dissolv.d Carbonates Meromictic Soda Lake Doroninskoe(Eastern Transbaikalia,Russia)

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 395-397页

作者： leonid v.ZAMANA Sv.tlana v.BORZENKO Institute of Natural Resources Cryology and Ecology Siberian Branch of RAS

1 Introduction Meromictic soda Lake Doroninskoe localized in the intermountain area,filled with continental sediments of the Mesozoic,in the upper basin of the riv.r *** of its location are N51°14’42"E112°14’40",

关键词： Soda lake dissolv.d carbonates sulfate reduction hydrogen sulfide isotopic composition carbon oxygen

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Low-agglomerated yttria nanopowders v.a decomposition of sulfate-doped precursor with transient morphology

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Journal of Rare Earths 2014年第4期32卷 320-325页

作者： R.P.Yav.tskiy D.Yu.Kosyanov.v.N.Baumer A.G.Doroshenko A.I.fedorov N.A.Matv.ev.kaya A.v.Tolmachev.O.M.v.v. Institute for Single Crystals of NAS of Ukraine State Scientific Institution"Institute for Single Crystals"of NAS of Ukraine

The fabrication peculiarities of low-agglomerated yttria （Y2O3） nanopowders v.a thermal decomposition of sulfate-doped precursor with transient morphology were studied. It was determined that Y2（OH）5（NO3）x（CO2）y（SO4）z·nH2O （n=1-2） crystalline precursor underwent fragmentation and decomposition into isolated quasi-spherical Y2O3 particles upon calcination. Effect was con-nected with minimizing the free energy of the plate-like crystallites v.a reducing the contact surface until to the moment of spheroidi-zation and attainment of isolation that occurred atТ=1100 °С. Residual sulfate ions slowed down the surface diffusion during heat treatment thus retaining quasy-spherical morphology and low aggregation degree of Y2O3 nanopowders. Sulfate-doped yttria nanopowders with medium particle size of 53±13 nm possessed improv.d sinterability in comparison with undoped ones arising from finer particle size, narrower particle distribution and lower agglomeration degree.

关键词： precursor transient morphology sulfate-ions yttria nanopowders particle size sinterability rare earths

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