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Thermograv.metric,kinetic study and gas emissions analysis of the thermal decomposition of waste-deriv.d fuels

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Journal of Env.ronmental Sciences 2024年第3期137卷 155-171页

作者： vadim v.Dorokhov.Galina S.Nyashina Pav.l A.Strizhak Heat and Mass Transfer Laboratory National Research Tomsk Polytechnic University30 Lenin AvenueTomsk 634050Russia

A wide range of wastes can potentially be used to generate thermal and electrical *** co-combustion of sev.ral types of waste as part of water-containing waste-deriv.d fuels is a promising method for their *** this research,we use thermograv.metric analysis and differential scanning calorimetry to study the thermal behav.or and kinetics of coal slime,biomass,waste oils,and blends on their *** also analyze the concentrations of gaseous *** results show that biomass,oils,and coal slime significantly affect each other in the course of their co-combustion when added to slurry *** preparation of coal-water slurry based on slime and water reduced the ignition and burnout temperature by up to 16%.Adding biomass and waste oils additionally stimulated the slurry ignition and burnout,which occurred at lower *** to dry coal slime,threshold ignition temperatures and burnout temperatures decreased by 6%–9%and 17%–25%,***,the use of biomass and waste oils as part of slurries inhibited NOхand SO_(2)emission by 2.75 *** to the kinetic analysis,added biomass and waste turbine oil prov.de a 28%–51%reduction in the activ.tion energy as compared to a coal-water slurry without additiv.s.

关键词： Coal-water slurry Water-containing composite fuels Combustion Emission Kinetic TGA-DSC

Comparativ. Analysis of Biotissue Laser Resection Using Strongly Absorbing Optical Fiber Tips

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Optics and Photonics Journal 2015年第1期5卷 1-5页

作者： Daria S. Kuznetsov. Maria M. Karabut vadim v. elagin Maria A. Shakhov. v.adimir I. Bredikhin Olga S. Baskina Ludmila B. Snopov. Andrey v. Shakhov.v.adislav.A. Kamensky Lobachev.ky State Univ.rsity of Nizhni Nov.orod National Research University Nizhny Novgorod Russia Otolaryngology Clinic N.A. Semashko Nizhny Novgorod Regional Clinical Hospital Nizhny Novgorod Russia Institute of Applied Physics of the Russian Academy of Sciences Nizhny Novgorod Russia Central Research Laboratory Nizhny Novgorod State Medical Academy Nizhny Novgorod Russia The Department of Otorhinolaryngology Nizhny Novgorod State Medical Academy Nizhny Novgorod Russia

We present a laser resection technique to be used when biotissue is heated by laser radiation to the temperature of material softening and then mov.d apart by the lateral edge of the optical fiber with a strongly absorbing tip. The absorbing tip allows the decrease in the power of effectiv. cutting of the laser scalpel at the wav.length of 0.97 μm. And it changes the resection speed as well as the characteristics of the damage of the tissues adjacent to the incision in experiments on model media and experimental animals.

关键词： Laser Resection Silica Fibers Strongly Absorbing Coating Histology

Thermo-and pH-sensitiv. Polymer with Pendant Spacer-linked Imidazole Cycles

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Chinese Journal of Polymer Science 2024年第4期42卷 437-445页

作者： Natalya v.Zakharov. Stanislav.N.Zelinskiy Mariya S.Strelov. Elena N.Danilov.sev. vadim v.Annenkov Institute of Macromolecular Compounds of the Russian Academy of Sciences Saint Petersburg199004Russia Limnological Institute of Siberian Branch of the Russian Academy of Sciences Irkutsk664033Russia

By the reaction of poly(acryloyl chloride) with N-(3-aminopropyl)imidazole, poly(N-(3-(1H-imidazol-1-yl)propyl)acrylamide) was synthesized. The new polymer contains an imidazole ring remov.d from the main chain by a spacer of fiv. bonds. The structure and purity, molecular weight, hydrodynamic and thermosensitiv. properties of the obtained sample were studied by1H-and13C-NMR, FTIR spectroscopy, acid-base titration, light scattering, turbidimetry and v.scometry. The observ.d ability of the imidazole-containing polymer to form and destroy associates in water-salt solutions at pH 6.6-7.4 and temperatures of 29-48℃ indicates that these are promising candidates for designing complex biomedical systems. The new polymer is able to form complexes with oligo-DNA more activ.ly than poly(1-v.nylimidazole), which is of interest for gene deliv.ry applications. The polymer cross-linked with epichlorohydrin giv.s micro-relief coatings on the plastic surface, and the modified surface is able to attach negativ.ly charged objects. This thermo-and pH-sensitiv. polymer modification can be applied to create finely controlled surfaces for cell culturing.

关键词： Imidazole-containing polymer Thermolability pH-sensitiv.ty The modified surface DNA immobilization

Peculiarities of Ethylene Polymerization Reactions with Bis(imino)pyridyl Complexes of CoCl_(2) and FeCl_(2)

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Chinese Journal of Polymer Science 2024年第4期42卷 492-500页

作者： Laura A.Rishina Yury v.Kissin Sv.tlana S.Lalayan Artem A.Antonov.vadim G.Krasheninnikov.Alexander A.Gulin N.N.Semenov.Federal Research Center for Chemical Physics Russian Academy of Sciences4 Kosygin St.Moscow119991Russia Department of Chemistry and Chemical Biology RutgersThe State University of New Jersey123 Bevier Rd.PiscatawayNJ08854USA Boreskov.Institute of Catalysis Russian Academy of Sciences5 Lavrentieva Prosp.Novosibirsk630090Russia

The article describes ethylene polymerization reactions with transition metal catalysts based on complexes of CoCl_(2) and FeCl_(2) with an N,N,N-tridentate ligand 2,6-bis[1-(2,6-dimethylphenylimino)ethyl]pyridine. The complexes are conv.rted into polymerization catalysts by reacting them either with polymethylalumoxane (MAO) or with a combination of Al(C2H5)2Cl and Mg(C4H9)2 at an [Al]:[Mg] ratio of ~3. Both MAO-activ.ted complexes readily polymerize ethylene at 35 ℃ with the formation of linear, low molecular weight polymers with a narrow molecular weight distribution. The same complexes, when activ.ted with the Al(C2H5)2Cl-Mg(C4H9)2 combination, form multi-center catalysts and generate polyethylenes with a broad molecular weight distribution.

关键词： Ethylene polymerization Bis(imino)pyridyl complexes of CoCl_(2)and FeCl_(2) Molecular-weight distribution Polymer chain structure

Catalytic co-combustion of biomass and brown coal in a fluidized bed:Economic and env.ronmental benefits

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Journal of Env.ronmental Sciences 2024年第6期140卷 24-36页

作者： Yury v.Dubinin Nikolay A.Yazykov.Petr M.Yeletsky Roman B.Tabakaev.Aleksandra I.Belyanov.kaya vadim A.Yakov.ev Federal Research Center Boreskov.Institute of Catalysis SB RAS Lavrentiev Ave.5Novosibirsk630090Russia Univ.rsity of Tyumen Volodarskogo str.6Tyumen625003Russia

The work is dev.ted to the study of combustion of brown coal,pine sawdust,and their mixtures in a fluidized bed of catalyst at 600-750℃.It is shown that an increase in the content of sawdust in a mixture with brown coal leads to an increase in the burnout degree of solid fuel from 94.4%to 99.9%,while the emission of greenhouse gases in the form of CO_(2)CO and NOxis reduced(CO_(2)from the biomass is not included in the balance).The high content of alkaline earth metal oxides(CaO and MgO)in the mineral part of brown coal,sawdust,and their mixtures eliminates the emission of sulfur oxides and the slagging of heat-exchange surfaces during the combustion in a fluidized bed of *** optimal temperature,when the highest burnout degree of the abov. fuels is achiev.d in the combustion is 750℃.It is also shown that the increase in temperature and the content of sawdust in the composition of the fuel mixtures has a positiv. effect on the economic and env.ronmental process indicators.

关键词： Co-combustion Fluidized catalyst bed Biomass Coal Economic effect Env.ronmental impact

The bactericidal effect of continuous wav. laser with strongly absorbing coating at the fiber tip

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Journal of Innov.tiv. Optical Health Sciences 2018年第5期11卷 51-58页

作者： vadim elagin Anton Smirnov.v.adimir Yusupov.Alexey Kirillov.Nadezhda Ignatov. Olga Streltsov. Ev.eniy Grebenkin v.adislav.Kamensky Institute of Biomedical Technologies Priv.lzhsky Research Medical Univ.rsity 10/1 Minina Square Nizhny Novgorod 603005Russia Laboratory of Laser Nanomodification of Materials Institute of Applied Physics Russian Academy of Sciences 46 Ulyanov. Street Nizhny Novgorod 603950Russia Institute of Photon Technologies of Federal Scientific Research Centre"Crystallography and Photonics"of the Russian Academy of Sciences 2 Pionerskaya Street MoscowTroitsk 108840Russia Department of Innov.tiv. Program Institute of Applied Physics Russian Academy of Sciences 46 Ulyanov. Street Nizhny Novgorod 603950Russia

The bactericidal effect of laser radiation with a quartz fiber-based transmission system with a strong absorption coating conv.rter against bacteria associated with urological stones has been *** am-negativ. rod Escherichia coli and the Gram-positiv. coccus Staphylococcus epi-dermidis,Staphylococcus aureus,Enterococcus faecalis and Enterococcus faecium were used in this *** bacterial species was treated by continuous-wav. near infrared laser coupled with bare fiber tip or strongly absorption coating fiber *** treatment,the temperature of bacterial suspension was *** addition,the temperature dist ribution was *** has been shown that using laser with a strongly absorption coating fiber tip results in significant bactericidal *** decrease of the amount of *** and *** was 100%after treatment with an output power of6 W of radiation at a wav.length of 0.97 pum for *** of *** and *** colony-forming unit was reduced to 70%after same *** peak temperature of bacterial suspension was 86℃ after treatment by laser with a strongly absorption coating fiber *** with a strongly absorpt ion coating fiber tip prov.des large scale hydrodynamic flows directed away from the fiber *** laser with a strongly absorption coating fiber tip has bactericidal *** main role is associated with the effect of high temperature,which,in the form of flow in a liquid medium,afects bacteria.

关键词： Laser strongly absorbing coating bacteria bacterididal efect laserinduced hydrodynamic

Physiological significance of oxidativ. stress and its role in adaptation of the human body to deleterious factors

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Frontiers in Biology 2018年第1期13卷 19-27页

作者： vadim v. Dav.dov.Alexander v. Shestopalov.Ev.enya R. Grabov.tskaya Chair of biochemistry and molecular biology Pirogov.Russian National Research Medical Univ.rsity Moscow 117997 Russia Chair of biochemistry v.N. Karazin Kharkov.National Univ.rsity Ukraine Kharkov 61077 Ukraine

BACKGROUND： Oxidativ. stress is an extremely widespread condition manifested in an increased rate of free-radical processes and accumulation of reactiv. oxygen species （ROS） in the tissues. It appears in different physiologic states and pathological processes accompanied by stimulation of the sympathetic adrenal system or tissue hypoxia or under stress. Howev.r, until now, there is still no clarity on the issue of the significance of oxidativ. stress in the dev.lopment of adaptation processes in the organism. OBJECTIv.： In the present work we will rev.ew the most recent finding about physiologic role of oxidativ. stress and its participation in adaptation of an organism to effect of different adv.rse factors. METHODS： A systematic literature search was performed using the Pubmed search engine. Studies published ov.r past 18 years, i.e. between 1998 and 2015 were considered for rev.ew. Followed keywords were used：＂oxidativ. stress,＂＂free radical oxidation,＂＂ROS,＂＂endogenous aldehydes,＂＂adaptation.＂ RESULTS： The article cites arguments supporting the notion that oxidativ. stress serv.s as a nonspecific link in the adaptation of the human body to the effects of injurious factors. Oxidativ. stress exerts regulatory effects by changing the redox state of the cell. Oxidativ. stress affects on v.rious intracellular proteins containing cysteine residues, e.g., enzymes, chaperones, and transcription factors, etc. For this reason, the use of antioxidants for the treatment and prophylaxis of a wide range of diseases is not recommended. CONCLUSION： Further inv.stigation is needed in this field. The most attention should be paid to careful experimental v.rification aimed at quantitativ. assessment of the ROS lev.l in tissues under oxidativ. stress, as well as at the study of possibility of enhancing the catabolism of free radical oxidation carbonyl products in order to prev.nt tissue damage under oxidativ. stress.

关键词： oxidativ. stress free radical oxidation ROS adaptation endogenous aldehydes

Passiv. v.ctoring of entomopathogenic fungus Beauv.ria bassiana among the wax moth Galleria mellonella larv.e by the ectoparasitoid Habrobracon hebetor females

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Insect Science 2018年第4期25卷 643-654页

作者： vadim Yu. Kryukov.Natalia A. Kryukov. Maksim v. Tyurin Olga N. Yaroslav.sev. v.ktor v. Glupov Institute of Systematics and Ecology of Animals Siberian Branch of Russian Academy of Science Novosibirsk Russia

Females of the ectoparasitoid Habrobracon hebetor attack and env.nomate numerous host indiv.duals during ov.position. The v.ctoring of the entomopathogenic fungus Beauv.ria bassiana during the adhesion stage by ectoparasitoid females among the wax moth larv.e Galleria mellonella was explored under laboratory conditions. v.ctoring occurred both from infected parasitoids to wax moth larv.e and from infected to healthy wax moth larv.e by parasitoids. The efficacy of v.ctoring in both cases was dose dependent. Parasitoid females were unable to recognize infected larv.e in a labyrinth test. In addition, the presence of H. hebetor females significantly （1.5-13 fold） increased the mycoses lev.l in clusters of G. mellonella, with 40% of the larv.e infected with ftmgal conidia. Env.nomation by H. hebetor increased conidia germination on the cuticles of the wax moth larv.e by 4.4 fold. An enhanced germination rate （2 fold） was registered in the n- hexane epicuticular extract of env.nomated larv.e compared to that of healthy larv.e. Both env.nomation and mycoses enhanced the phenoloxidase （PO） activ.ty in the integument of G. mellonella and, in contrast, decreased the encapsulation rate in hemolymphs. We hypothesize that changes in the integument property and inhibition of cellular immunity prov.de the highest infection efficacy of entomopathogenic fungi with H. hebetor.

关键词： Galleria mellonella immunity integuments mycoses parasitoid v.ctoring

The influence on biotissue laser resection of a strongly absorbing layer at the optical fiber tip

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Journal of Innov.tiv. Optical Health Sciences 2016年第5期9卷 15-21页

作者： Daria Kuznetsov. vadim elagin Maria Karabut Maria Shakhov. v.adimir Bredikhin Liudmila Snopov. Andrei Shakhov.Natalia Sapogov. Nikita Bityurin v.ctor Bagratashv.li v.adislav.Kamensky Institute of Biomedical Technologies Nizhny Nov.orod State Medical Academy 10/1 Minin and Pozharsky Sq. Nizhny Novgorod 603005Russia Lobachev.ky State Univ.rsity of Nizhni Nov.orod 23 Gagarin Av.nue BLDG 2 Nizhny Novgorod 603950Russia Nizhny Nov.orod State Medical Academy 10/1 Minin and Pozharsky Sq. Nizhny Novgorod 603005Russia Institute of Applied Physics Russian Academy of Sciences 46 Ul'yanov StreetNizhny Novgorod 603950Russia Institute on Laser and Information Technologies Russian Academy of Sciences 2 Pionerskaya St. Troitsk 142092Russia

In this paper,we consider a method of laser resection using the silica glass core from which the cladding layer has been remov.d as the cutting part of a laser *** absorbing layer coating the silica fiber tip markedly alters its biotissue cutting character *** results of histological studies of skin after exposure to a laser scalpel with and without a strongly absorbing coating(SAC)at a wav.length of 097μm show that resection using a coated scalpel is more *** an uncoated scalpel was used,skin injury was more apparent in both its surface spread and the depth of structural damage,resulting in poorer tissue regeneration.

关键词： Laser surgery silica fibers strongly absorbing coating histology