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Towards electrochemical hydrogen storage in liquid organic hydrogen carriers via proton-coupled electron transfers

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Journal of Energy Chemistry 2022年第10期31卷 292-300,I0007页

作者： Hamid Ghorbani Shiraz Mikhail Vagin Tero-Petri Ruoko viktor Gueskine Krzysztof Karon Mieczystaw tapkowski Tobias Abrahamsson Thomas Ederth Magnus Berggren Xavier Crispin Laboratory of Organic Electronics Department of Science and Technology(ITN)Linkoping UniversitySE-60174 NorrkopingSweden Smart Photonic Materials Facuty of Engineering and Natural SciencesTampere UniversiyPBox 541.Tampere Fl-33101Finland Silesian University of Technology.Faculty of Chemistry Deparment of Physical Chemistry and Technology of PolymersM.Strzody 9.44-100 GliwicePoland dDepartment of Physics Chemistry and Biology(IFM)Linkoping UniversiySE-58183 LinkopingSweden

Green hydrogen is identified as one of the prime clean energy carriers due to its high energy density and a zero emission of CO_(2).A possible solution for the transport of H_(2)in a safe and low-cost way is in the form of liquid organic hydrogen carriers(LOHCs).As an alternative to loading LOHC with H_(2)via a two-step procedure involving preliminary electrolytic production of H_(2)and subsequent chemical hydrogenation of the LOHC,we explore here the possibility of electrochemical hydrogen storage(EHS)via conversion of proton of a proton donor into a hydrogen atom involved in covalent bonds with the LOHC(R)via a protoncoupled electron transfer(PCET)reaction:2nH^(+)+2ne^(-)+Rox■n H_(2)^(0)*** chose 9-fluorenone/fluorenol(Fnone/Fnol)conversion as such a model PCET *** electrochemical activation of Fnone via two sequential electron transfers was monitored with in-situ and operando spectroscopies in absence and in presence of different alcohols as proton donors of different reactivity,which enabled us to both quantify and get the mechanistic insight on *** possibility of hydrogen extraction from the loaded carrier molecule was illustrated by chemical activation.

关键词： Proton-coupled electron transfer Electrochemical hydrogen storage Hydrogen bonding agent Anion-radical Comproportionation

Bioinspired Water-soluble Polymers with Grafted Polyamine Chains： Synthesis and Complexation with Oligonucleotides

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Chinese Journal of Polymer Science 2018年第10期36卷 1114-1122页

作者： Vadim V.Annenkov Uma Maheswari Krishnan viktor A.Pal'shin Stanislav N.Zelinskiy Gayathri Kandasamy Elena N.Danilovtseva Limnological Institute of the Siberian Branch of the Russian Academy of Sciences 3 Ulan-Batorskaya St. P.O. Box 278 Irkutsk 664033 Russia Centre for Nanotechnology & Advanced Biomaterials (CeNTAB) School of Chemical and Biotechnology SASTRA University Thanjavur - 613401 Tamil Nadu India

The siliceous frustules of diatom algae contain complex proteins known as silaffins, which consist of a peptide chain with grafted polyamine chains. These polyamines contain twenty or more nitrogen atoms with trimethylene groups between the nitrogens. We synthesized a set of polymers containing grafted long-chain polyamine fragments by using acryloyl chloride （ACh） polymers and activated acrylic acid copolymers as the starting materials. The new polymers contained 0.05 mol%-3.2 mol% of polyamine chains, which corresponded to 0.06-3.56 mmol·g- 1 amine groups. The new amine-containing polymers formed complexes with short （19-21-mer） deoxyribonucleic acid （DNA） and ribonucleic acid （RNA） strands, and these complexes penetrated into model yeast cells and A549 lung cancer cell. This study demonstrates the potential of these species based on long-chain polyamines to serve as novel gene delivery systems.

关键词： Polyamine Polymeric amine Gene delivery Acryloyl chloride

Polarization-based underwater geolocalization with deep learning

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eLight 2023年第1期3卷 122-135页

作者： Xiaoyang Bai Zuodong Liang Zhongmin Zhu Alexander Schwing David Forsyth viktor Gruev Department of Electrical and Computer Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Department of Computer Science University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Department of Bioengineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Carle Illinois College of Medicine University of Illinois at Urbana-ChampaignUrbanaIL 61820USA

Water is an essential component of the Earth’s climate,but monitoring its properties using autonomous underwater sampling robots remains a significant challenge due to lack of underwater geolocalization *** methods for underwater geolocalization rely on tethered systems with limited coverage or daytime imagery data in clear waters,leaving much of the underwater environment *** in turbid waters or at night has been considered unfeasible due to absence of identifiable *** this paper,we present a novel method for underwater geolocalization using deep neural networks trained on-10 million polarization-sensitive images acquired globally,along with camera position sensor *** approach achieves longitudinal accuracy of-55 km(-1000 km)during daytime(nighttime)at depths up to-8 m,regardless of water *** clear waters,the transfer learning longitudinal accuracy is-255 km at 50 m *** leveraging optical data in conjunction with camera position information,our novel method facilitates underwater geolocalization and offers a valuable tool for untethered underwater navigation.

关键词： Underwater geolocalization Ocean exploration Celestial-based navigation Polarization Deep learning

Poly(1-vinylimidazole) Prospects in Gene Delivery

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Chinese Journal of Polymer Science 2019年第7期37卷 637-645页

作者： Elena N.Danilovtseva Stanislav N.Zelinskiy viktor A.Pal'shin Gayathri Kandasamy Uma Maheswari Krishnan Vadim V.Annenkov Limnological Institute of the Siberian Branch of the Russian Academy of Sciences 3Ulan-Batorskaya St.P.O. Box 278Irkutsk 664033Russia Centre for Nanotechnology &Advanced Biomaterials (CeNTAB) School of Chemical and BiotechnologySASTRA UniversityThanjavur 613401 Tamil NaduIndia

Polymeric amines are being studied intensively as components of systems for gene delivery in genetic engineering and gene therapy of genetic disorders, including cancer. Despite remarkable achievements in the field, polymeric amines, such as polyethyleneimine, show some disadvantages. Strong interaction between the amine-containing polymer and nucleic acid hampers the release of nucleic acid in the cell cytoplasm. Amine groups can interact with the cell membrane which results in cell death. These limitations of polymeric amines stimulated an investigation of new structures for gene delivery. Imidazole-containing polymers have attracted attention as lesser basic substances, while they are able to interact with polymeric acids. Further development of imidazole-based gene delivery agents requires knowledge about some fundamental aspects of interaction between nucleic acids, and polymeric imidazoles. In this work, we studied the complexation of poly(1-vinylimidazole) and oligomeric DNA. We found that the number of active sites capable of binding with negatively charged phosphate groups is comparable with the number of protonated imidazole units in the case of high molecular weight polymer. The increase in polymer charge by 1-bromopropane quaternizating 1%?5% imidazole units or by decreasing the pH to 6.5?7 considerably increased the ability of poly(1-vinylimidazole) to interact with oligonucleotides. The pH sensitivity of this interaction is interesting for cancer gene therapy because the tumours have a lowered intercellular pH (stable oligonucleotide complex) and a higher extracellular pH which can lead to complex dissociation. Minimal critical length for complexation of quaternized poly(1-vinylimidazole) and DNA is below eight units which corresponds to polymers with amine groups. Fluorescence-tagged poly(1-vinylimidazole) samples were obtained and their potential for monitoring the polymer and polymer-oligonucleotide complex internalization into living cells was demo

关键词： Polymeric amines Oligonucleotides Fluorescence Poly(1-vinylimidazole) Gene delivery

Gas-phase hydrogenation influence on defect behavior in titanium-based hydrogen-storage material

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Progress in Natural Science:Materials International 2017年第1期27卷 105-111页

作者： Roman S.Laptev viktor N.Kudiiarov Yuri S.Bordulev Andrey A.Mikhaylov Andrey M.Lider Department of General Physics Institute of Physics and Technology National Research Tomsk Polytechnic University

Titanium and its alloys are promising materials for hydrogen storage. However, hydrogen penetration accompanies the exploitation of hydrogen storage alloys. In particular, hydrogen penetration and accumulation in titanium alloys changes their mechanical properties. Therefore, the research works of such materials are mainly focused on improving the reversibility of hydrogen absorption-liberation processes, increasing the thermodynamic characteristics of the alloys, and augmenting their hydrogen storage capacity. In the process of hydrogenation-dehydrogenation, the formed defects both significantly reduce hydrogen storage capacity and can also be used to create effective traps for hydrogen. Therefore, the investigation of hydrogen interaction with structural defects in titanium and its alloys is very important. The present work, the hydrogen-induced formation of defects in the alloys of commercially pure titanium under temperature gas-phase hydrogenation（873 K） has studied by positron lifetime spectroscopy and Doppler broadening spectroscopy. Based on the evolution of positron annihilation parameters τ_f, τd, their corresponding intensities If, Idand relative changes of parameters S/S0and W/W0, the peculiarities of hydrogen interaction with titanium lattice defects were investigated in a wide range of hydrogen concentrations from 0.8at% to 32.0at%.

关键词： Titanium Hydrogen Lattice defects Positron annihilation Positron lifetime Doppler broadening

Wave processes-fundamental basis for modern high technologies

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Natural Science 2010年第4期2卷 298-306页

作者： viktor Sergeevich Krutikov 不详

Problems of moving boundaries, moving per-meable boundaries, questions of control over wave processes are fundamental physical prob-lems (acc. to ***) that exist for a long time from the moment of the wave equation emergence, for over three hundred years. This paper for the first time states a brief, but clear and quite integral disclosure of the author's approaches, and also a physical essence of analytical methods of functions evaluation of wave processes control - the basic processes of the Nature and the natural sciences, character-istic for all objects of the surrounding world without exception and able to occur only in the regions with moving and moving permeable boundaries. Absolutely immovable boundaries do not exist in the nature. Certain examples which are fundamental in theoretical physics of spherical, cylindrical and flat waves, including the waves induced by dilation of the final length cylinder, demonstrate physical, mathematical and engineering lucidity and simplicity (the so-lution comes to a quadratic equation), and, there-fore, the practical value of definition of control function for the predetermined (based on engi-neering requirements) functions of effect. This paper is designated for a wide range of scientific readers, with aim to render to the reader first of all the physical sense of the studied phenome-non, to show the novelty that it has introduced in the development of the corresponding direc-tion, to show that the way of the research (it is more important than the result) has not arisen “out of nothing”, and the gained results are only “a stone which cost him a whole life” (***-car).

关键词： Waves Mobility Permeability Boundary Control Inverse Problems

Passive vectoring of entomopathogenic fungus Beauveria bassiana among the wax moth Galleria mellonella larvae 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. Kryukova Maksim V. Tyurin Olga N. Yaroslavtseva viktor 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 envenomate numerous host individuals during oviposition. The vectoring of the entomopathogenic fungus Beauveria bassiana during the adhesion stage by ectoparasitoid females among the wax moth larvae Galleria mellonella was explored under laboratory conditions. Vectoring occurred both from infected parasitoids to wax moth larvae and from infected to healthy wax moth larvae by parasitoids. The efficacy of vectoring in both cases was dose dependent. Parasitoid females were unable to recognize infected larvae in a labyrinth test. In addition, the presence of H. hebetor females significantly （1.5-13 fold） increased the mycoses level in clusters of G. mellonella, with 40% of the larvae infected with ftmgal conidia. Envenomation by H. hebetor increased conidia germination on the cuticles of the wax moth larvae by 4.4 fold. An enhanced germination rate （2 fold） was registered in the n- hexane epicuticular extract of envenomated larvae compared to that of healthy larvae. Both envenomation and mycoses enhanced the phenoloxidase （PO） activity 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 provide the highest infection efficacy of entomopathogenic fungi with H. hebetor.

关键词： Galleria mellonella immunity integuments mycoses parasitoid vectoring

Information Models for Forecasting Nonlinear Economic Dynamics in the Digital Era

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Applied Mathematics 2021年第3期12卷 171-208页

作者： Askar Akaev viktor Sadovnichiy Moscow State University Moscow Russia

The aim of this study was to develop an adequate mathematical model for long-term forecasting of technological progress and economic growth in the digital age (2020-2050). In addition, the task was to develop a model for forecast calculations of labor productivity in the symbiosis of “man + intelligent machine”, where an intelligent machine (IM) is understood as a computer or robot equipped with elements of artificial intelligence (AI), as well as in the digital economy as a whole. In the course of the study, it was shown that in order to implement its goals the Schumpeter-Kondratiev innovation and cycle theory on forming long waves (LW) of economic development influenced by a powerful cluster of economic technologies engendered by industrial revolutions is most appropriate for a long-term forecasting of technological progress and economic growth. The Solow neoclassical model of economic growth, synchronized with LW, gives the opportunity to forecast economic dynamics of technologically advanced countries with a greater precision up to 30 years, the time which correlates with the continuation of LW. In the information and digital age, the key role among the main factors of growth (capital, labour and technological progress) is played by the latter. The authors have developed an information model which allows for forecasting technological progress basing on growth rates of endogenous technological information in economics. The main regimes of producing technological information, corresponding to the eras of information and digital economies, are given in the article, as well as the Lagrangians that engender them. The model is verified on the example of the 5th information LW for the US economy (1982-2018) and it has had highly accurate approximation for both technological progress and economic growth. A number of new results were obtained using the developed information models for forecasting technological progress. The forecasting trajectory of economic g

关键词： The Schumpeter-Kondratiev Innovation and Cycle Theory of Economic Development The Solow Neoclassical Model of Economic Growth Information Model of Technological Progress Symbiosis of “Human + Intelligent Machine” Labour Productivity in the Symbiosis of “Human + IM” and the Digital Economy

Immunoprofiling of Drosophila Hemocytes by Single-cell Mass Cytometry

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Genomics, Proteomics & Bioinformatics 2021年第2期19卷 243-252页

作者： Jozsef A.Balog viktor Honti Eva Kurucz Beata Kari Laszlo G.Puskas Istvan Ando Gabor J.Szebeni Laboratory of Functional Genomics Institute of GeneticsBiological Research CentreSzeged H-6726Hungary University of Szeged Ph.D.School in BiologySzeged H-6726Hungary Immunology Unit Institute of GeneticsBiological Research CentreSzeged H-6726Hungary Department of Physiology Anatomy and NeuroscienceFaculty of Science and InformaticsUniversity of SzegedSzeged H-6726Hungary

Single-cell mass cytometry(SCMC)combines features of traditional flow cytometry(i.e.,fluorescence-activated cell sorting)with mass spectrometry,making it possible to measure several parameters at the single-cell level for a complex analysis of biological regulatory *** this study,we optimized SCMC to analyze hemocytes of the Drosophila innate immune *** used metal-conjugated antibodies(against cell surface antigens H2,H3,H18,L1,L4,and P1,and intracellular antigens 3A5 and L2)and anti-IgM(against cell surface antigen L6)to detect the levels of antigens,while anti-GFP was used to detect crystal cells in the immune-induced *** investigated the antigen expression profile of single cells and hemocyte populations in naive states,in immune-induced states,in tumorous mutants bearing a driver mutation in the Drosophila homologue of Janus kinase(hopTum)and carrying a deficiency of the tumor suppressor gene lethal(3)malignant blood neoplasm-1[l(3)mbn1],as well as in stem cell maintenance-defective hdcD84 mutant *** analysis enabled the discrimination of the functionally different major hemocyte subsets for lamellocytes,plasmatocytes,and crystal cells,and delineated the unique immunophenotype of Drosophila *** have identified subpopulations of L2^(+)/P1^(+)and L2^(+)/L4^(+)/P1^(+)transitional phenotype cells in the tumorous strains l(3)mbn1 and hopTum,respectively,and a subpopulation of L4^(+)/P1^(+)cells upon immune *** results demonstrated for the first time that SCMC,combined with multidimensional bioinformatic analysis,represents a versatile and powerful tool to deeply analyze the regulation of cell-mediated immunity of Drosophila.

关键词： Mass cytometry Innate immunity Drosophila Single-cell analysis Hemocyte