Most recent issue published online in the International Journal of Nanotechnology.
International Journal of Nanotechnology
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International Journal of Nanotechnology
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International Journal of Nanotechnology
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Synthesis of nanopowders Nd2Fe14B by chemical method
http://www.inderscience.com/link.php?id=136504
The paper presents a description of a new chemical method for the synthesis of magnetic nanoparticles of the intermetallic compound Nd<SUB align="right">2Fe<SUB align="right">14B, which consists of several stages. At the first stage, nanoparticles of neodymium oxide Nd<SUB align="right">2O<SUB align="right">3, iron oxide Fe<SUB align="right">2O<SUB align="right">3, and iron borate Fe<SUB align="right">3BO<SUB align="right">6 were synthesised by chemical deposition methods. At the second stage, the powders were mixed in the required proportion and reduced using a two-stage diffusion-reduction process: first, at 800°C in an Ar + 5% H<SUB align="right">2 medium, and then, to form the Nd<SUB align="right">2Fe<SUB align="right">14B phase, the powder mixture was added calcium hydride powder, the resulting mixture was pressed into a tablet, and at 800°C in an Ar medium, the calci-thermal reduction-diffusion synthesis was carried out. At the third stage, Nd<SUB align="right">2Fe<SUB align="right">14B nanopowders were separated from calcium oxide CaO by washing the resulting product with a solution of ammonium hydroxide and ethanol NH<SUB align="right">4Cl/C<SUB align="right">2H<SUB align="right">5OH. The phase composition, structure and morphology of the particles were determined by X-ray diffraction (XRD), scanning (SEM) and transmission (TEM) electron microscopy. Particle sizes were determined by dynamic light scattering (DLS). The composition of nanoparticles was determined using an energy dispersive X-ray spectrometer (EDS). XRD results indicate a high efficiency of the proposed method for the preparation of nanopowders of the intermetallic compound Nd<SUB align="right">2Fe<SUB align="right">14B.
Synthesis of nanopowders Nd2Fe14B by chemical method
O.E. Abdurakhmonov; M.E. Alisultanov; E.V. Yurtov; E.S. Savchenko; A.G. Savchenko
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 3 - 16
The paper presents a description of a new chemical method for the synthesis of magnetic nanoparticles of the intermetallic compound Nd<SUB align="right">2Fe<SUB align="right">14B, which consists of several stages. At the first stage, nanoparticles of neodymium oxide Nd<SUB align="right">2O<SUB align="right">3, iron oxide Fe<SUB align="right">2O<SUB align="right">3, and iron borate Fe<SUB align="right">3BO<SUB align="right">6 were synthesised by chemical deposition methods. At the second stage, the powders were mixed in the required proportion and reduced using a two-stage diffusion-reduction process: first, at 800°C in an Ar + 5% H<SUB align="right">2 medium, and then, to form the Nd<SUB align="right">2Fe<SUB align="right">14B phase, the powder mixture was added calcium hydride powder, the resulting mixture was pressed into a tablet, and at 800°C in an Ar medium, the calci-thermal reduction-diffusion synthesis was carried out. At the third stage, Nd<SUB align="right">2Fe<SUB align="right">14B nanopowders were separated from calcium oxide CaO by washing the resulting product with a solution of ammonium hydroxide and ethanol NH<SUB align="right">4Cl/C<SUB align="right">2H<SUB align="right">5OH. The phase composition, structure and morphology of the particles were determined by X-ray diffraction (XRD), scanning (SEM) and transmission (TEM) electron microscopy. Particle sizes were determined by dynamic light scattering (DLS). The composition of nanoparticles was determined using an energy dispersive X-ray spectrometer (EDS). XRD results indicate a high efficiency of the proposed method for the preparation of nanopowders of the intermetallic compound Nd<SUB align="right">2Fe<SUB align="right">14B.]]>
10.1504/IJNT.2024.136504
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 3 - 16
O.E. Abdurakhmonov
M.E. Alisultanov
E.V. Yurtov
E.S. Savchenko
A.G. Savchenko
Department of Nanomaterials and Nanotechnology, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square, 9, Moscow, 125047, Russian Federation ' Department of Nanomaterials and Nanotechnology, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square, 9, Moscow, 125047, Russian Federation ' Department of Nanomaterials and Nanotechnology, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square, 9, Moscow, 125047, Russian Federation ' Department of Physical Materials Science, National Research Technological University "MISiS", Leninsky Prospect, 4, Moscow, 119049, Russian Federation ' Department of Physical Materials Science, National Research Technological University "MISiS", Leninsky Prospect, 4, Moscow, 119049, Russian Federation
chemical synthesis
deposition
diffusion-reduction process
nanopowders Nd2Fe14B
nanoparticles
morphology
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The second quantum revolution: the development of quantum subatomic nanotechnologies
http://www.inderscience.com/link.php?id=136507
The paper analyses the development of quantum nanotechnology based on attosecond physics of the subatomic level of the condensed state. The ways of realising the main achievements of the second quantum revolution in subatomic nanotechnologies: quantum entanglement, quantum contextuality and quantum dissipativity are considered. A theoretical analysis of the prospects for this direction in the development of quantum subatomic nanotechnologies was carried out within the framework of the theory of thermo field dynamics of a condensed state. The analysis showed that entanglement of subatomic pairs of electrons can be realised using single attosecond pulses. These pairs form the interface between supra-atomic capsules, which localise closed nuclear-electronic subsystems by the Coulomb blockade. The processes of measurement and control of the electronic-nuclear subsystem are carried out by the sensor and actuator control subsystem of secondary low-energy entangled pairs of electrons. Sensory stages of pulsed attosecond measurements alternate with stages of pulsed femtosecond control. In the measurement processes, secondary low-energy entangled pairs of electrons dissipate the energy of the electron-nuclear subsystem. As a result, the process of multiplication of a subsystem of low-energy secondary entangled pairs of electrons in the surrounding dissipative medium of the condensed state occurs. They form a dissipative interface infrastructure at higher levels in the hierarchy of smart quantum materials.
The second quantum revolution: the development of quantum subatomic nanotechnologies
S.A. Beznosyuk
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 17 - 25
The paper analyses the development of quantum nanotechnology based on attosecond physics of the subatomic level of the condensed state. The ways of realising the main achievements of the second quantum revolution in subatomic nanotechnologies: quantum entanglement, quantum contextuality and quantum dissipativity are considered. A theoretical analysis of the prospects for this direction in the development of quantum subatomic nanotechnologies was carried out within the framework of the theory of thermo field dynamics of a condensed state. The analysis showed that entanglement of subatomic pairs of electrons can be realised using single attosecond pulses. These pairs form the interface between supra-atomic capsules, which localise closed nuclear-electronic subsystems by the Coulomb blockade. The processes of measurement and control of the electronic-nuclear subsystem are carried out by the sensor and actuator control subsystem of secondary low-energy entangled pairs of electrons. Sensory stages of pulsed attosecond measurements alternate with stages of pulsed femtosecond control. In the measurement processes, secondary low-energy entangled pairs of electrons dissipate the energy of the electron-nuclear subsystem. As a result, the process of multiplication of a subsystem of low-energy secondary entangled pairs of electrons in the surrounding dissipative medium of the condensed state occurs. They form a dissipative interface infrastructure at higher levels in the hierarchy of smart quantum materials.]]>
10.1504/IJNT.2024.136507
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 17 - 25
O.E. Abdurakhmonov
M.E. Alisultanov
E.V. Yurtov
E.S. Savchenko
A.G. Savchenko
Department of Physical and Inorganic Chemistry, Altai State University, Barnaul, 656049, Russia
second quantum revolution
quantum subatomic nanotechnology
attosecond physics
quantum entanglement
quantum contextuality
quantum dissipativity
entangled electron pairs
thermo field dynamics
nonequilibrium condensed matter physics
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Planar nanostructures element analysis using the X-ray radiation emission induced by high energy excitation
http://www.inderscience.com/link.php?id=136509
The work presents a short comparative description of high energy methods applied for characteristical X-ray radiation emission excitation including fluxes of X-ray hard radiation and beams of high energy ions and electrons oriented on the element analysis of planar nanostructures. The paper discusses the analysis possibilities executed in conditions of the hard X-ray exciting fluxes total external reflection on studied surface (TXRF) and in frame of proton (particle) induced X-ray emission (PIXE) and electron microprobe methods modified by including into its spectrometric schemes planar X-ray waveguide-resonators. Experimental data confirming high efficiency of these methods for planar nanostructures surface element diagnostics are presented.
Planar nanostructures element analysis using the X-ray radiation emission induced by high energy excitation
E.V. Egorov; V.K. Egorov; M.S. Afanas'ev
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 26 - 37
The work presents a short comparative description of high energy methods applied for characteristical X-ray radiation emission excitation including fluxes of X-ray hard radiation and beams of high energy ions and electrons oriented on the element analysis of planar nanostructures. The paper discusses the analysis possibilities executed in conditions of the hard X-ray exciting fluxes total external reflection on studied surface (TXRF) and in frame of proton (particle) induced X-ray emission (PIXE) and electron microprobe methods modified by including into its spectrometric schemes planar X-ray waveguide-resonators. Experimental data confirming high efficiency of these methods for planar nanostructures surface element diagnostics are presented.]]>
10.1504/IJNT.2024.136509
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 26 - 37
E.V. Egorov
V.K. Egorov
M.S. Afanas'ev
X-ray Acusto-Optics Lab., Institute of Microelectronics Technology Russian Academy of Science, Chernogolovka, Street, Academica Osip'yana, 6, Moscow District, 142432, Russia; Department of Security Information, Financial University under the Government of the Russian Federation, Russia and Institute of Radio Engineering and Electronics, Russian Academy of Science, Moscow, 125167, Russia ' X-ray Acusto-Optics Lab., Institute of Microelectronics Technology Russian Academy of Science, Chernogolovka, Street Academica Osip'yana, 6, Moscow District, 142432, Russia ' Institute of Radio Engineering and Electronics, Russian Academy of Science, Fryazino, Moscow District, 141190, Russia
TXRF
total external reflection on studied surface
waveguide-resonator
PIXE
proton (particle) induced X-ray emission
RBS
Rutherford backscattering spectrometry
element diagnostic
X-ray
electron beam
microprobe
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Al2O3 nanoparticles synthesis, and a study of its influence on the fire behaviour of nanocomposite materials based on unsaturated polyester resin
http://www.inderscience.com/link.php?id=136506
The effect of sodium carbonate on the size formation of Al<SUB align="right">2O<SUB align="right">3 nanoparticles was successfully studied, as it was with an increase in the pH of the initial solution from 3.5 to 8, the particle size decrease from 97 ± 10 nm to 52 ± 10 nm. The alumina powder was analysed by using scanning electron microscopy SEM, energy dispersive spectrometer EDS, and Fourier transform infrared FTIR spectroscopy. Al<SUB align="right">2O<SUB align="right">3 nanoparticles with an average size of 74 ± 10 nm are used as flame retardant additives. The Al<SUB align="right">2O<SUB align="right">3 nanoparticles were found to be effective flame retardants additives in unsaturated polyester resin. The nanocomposite materials based on unsaturated polyester resin with adding of 5 wt% of alumina nanoparticles found to be optimum results, in which the burning rate decreased by 79.9% and the coke number (CN) value of the carbonated residue increased by 20% compared with the pure resin.
Al2O3 nanoparticles synthesis, and a study of its influence on the fire behaviour of nanocomposite materials based on unsaturated polyester resin
Anmar A. Harhoosh; E.V. Yurtov
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 38 - 48
The effect of sodium carbonate on the size formation of Al<SUB align="right">2O<SUB align="right">3 nanoparticles was successfully studied, as it was with an increase in the pH of the initial solution from 3.5 to 8, the particle size decrease from 97 ± 10 nm to 52 ± 10 nm. The alumina powder was analysed by using scanning electron microscopy SEM, energy dispersive spectrometer EDS, and Fourier transform infrared FTIR spectroscopy. Al<SUB align="right">2O<SUB align="right">3 nanoparticles with an average size of 74 ± 10 nm are used as flame retardant additives. The Al<SUB align="right">2O<SUB align="right">3 nanoparticles were found to be effective flame retardants additives in unsaturated polyester resin. The nanocomposite materials based on unsaturated polyester resin with adding of 5 wt% of alumina nanoparticles found to be optimum results, in which the burning rate decreased by 79.9% and the coke number (CN) value of the carbonated residue increased by 20% compared with the pure resin.]]>
10.1504/IJNT.2024.136506
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 38 - 48
Anmar A. Harhoosh
E.V. Yurtov
Department of Nanomaterials and Nanotechnology, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square, 9, Moscow, 125047, Russia ' Department of Nanomaterials and Nanotechnology, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square, 9, Moscow, 125047, Russia
nanoparticles
nanocomposite materials
flame retardants
unsaturated polyester resins
polymeric materials
metal oxides
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Properties of the nanoemulsions with seed oils
http://www.inderscience.com/link.php?id=136502
Seed oils contain a significant amount of biologically active substances; however, their use in medicine, cosmetics and the food industry is limited because of low solubility in water and high volatility. In this work, stable O/W nanoemulsions with oils and a mixture of surfactants Tween 60 and Span 60 were produced. Mean droplet diameter in nanoemulsion with mustard oil was ~18 nm, almond oil ~25 nm, grapeseed oil ~35 nm, and sunflower oil ~40 nm. All nanoemulsions were stable for more than 30 days. The most stable was nanoemulsion with mustard oil; no phase separation was observed during this period of time.
Properties of the nanoemulsions with seed oils
Ya.O. Ivanova; M.M. Kostromicheva; K.L. Voronina; M.Yu. Koroleva
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 49 - 58
Seed oils contain a significant amount of biologically active substances; however, their use in medicine, cosmetics and the food industry is limited because of low solubility in water and high volatility. In this work, stable O/W nanoemulsions with oils and a mixture of surfactants Tween 60 and Span 60 were produced. Mean droplet diameter in nanoemulsion with mustard oil was ~18 nm, almond oil ~25 nm, grapeseed oil ~35 nm, and sunflower oil ~40 nm. All nanoemulsions were stable for more than 30 days. The most stable was nanoemulsion with mustard oil; no phase separation was observed during this period of time.]]>
10.1504/IJNT.2024.136502
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 49 - 58
Ya.O. Ivanova
M.M. Kostromicheva
K.L. Voronina
M.Yu. Koroleva
Department of Nanomaterials and Nanotechnology Mendeleev, University of Chemical Technology, Miusskaya Sq., 9, Moscow, 125047, Russia ' Department of Nanomaterials and Nanotechnology Mendeleev, University of Chemical Technology, Miusskaya Sq., 9, Moscow, 125047, Russia ' Department of Nanomaterials and Nanotechnology Mendeleev, University of Chemical Technology, Miusskaya Sq., 9, Moscow, 125047, Russia ' Department of Nanomaterials and Nanotechnology Mendeleev, University of Chemical Technology, Miusskaya Sq., 9, Moscow, 125047, Russia
nanoemulsions
temperature phase inversion method
grapeseed oil
almond oil
sunflower oil
mustard oil
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The effect of the moisture state of samples on the change in the elastic-strength parameters of epoxy polymers during natural climatic ageing
http://www.inderscience.com/link.php?id=136510
The paper provides the results of studying the effect of the moisture state of epoxy polymers on the change in their elastic-strength parameters during natural ageing in a temperate continental climate. The object of the study was a polymer material based on Etal-247 modified epoxy resin and Etal-45M hardener. Based on the results of the studies, we determined the similarity of the curves of the change in the tensile strength of the samples under tension in the limiting equilibrium-moisture states (dried and moisturesaturated). Depending on the duration of natural climatic ageing, the range of variation in the tensile strength of samples in extreme moisture conditions is from 16 to 34% of the tensile strength in the dried state. The synergistic effect between irreversible structural changes in the polymer matrix under the effect of environmental factors and adsorbed moisture has been identified and quantified, which is expressed both in the expansion and contraction of the reversible moisture range effect. It has been established that for the late stages of natural climatic ageing of epoxy polymer samples based on Etal-247 epoxy resin and Etal-45M hardener, the point of maximum elongation under tension does not coincide with the point corresponding to the dried state.
The effect of the moisture state of samples on the change in the elastic-strength parameters of epoxy polymers during natural climatic ageing
D.R. Nizin; T.A. Nizina; V.P. Selyaev; N.S. Kanaeva
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 59 - 68
The paper provides the results of studying the effect of the moisture state of epoxy polymers on the change in their elastic-strength parameters during natural ageing in a temperate continental climate. The object of the study was a polymer material based on Etal-247 modified epoxy resin and Etal-45M hardener. Based on the results of the studies, we determined the similarity of the curves of the change in the tensile strength of the samples under tension in the limiting equilibrium-moisture states (dried and moisturesaturated). Depending on the duration of natural climatic ageing, the range of variation in the tensile strength of samples in extreme moisture conditions is from 16 to 34% of the tensile strength in the dried state. The synergistic effect between irreversible structural changes in the polymer matrix under the effect of environmental factors and adsorbed moisture has been identified and quantified, which is expressed both in the expansion and contraction of the reversible moisture range effect. It has been established that for the late stages of natural climatic ageing of epoxy polymer samples based on Etal-247 epoxy resin and Etal-45M hardener, the point of maximum elongation under tension does not coincide with the point corresponding to the dried state.]]>
10.1504/IJNT.2024.136510
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 59 - 68
D.R. Nizin
T.A. Nizina
V.P. Selyaev
N.S. Kanaeva
Department of Building Structures, Ogarev Mordovia State University, 68 Bolshevistskaya Street, Saransk, The Republic of Mordovia, 430005, Russia ' Department of Building Structures, Ogarev Mordovia State University, 68 Bolshevistskaya Street, Saransk, The Republic of Mordovia, 430005, Russia ' Department of Building Structures, Ogarev Mordovia State University, 68 Bolshevistskaya Street, Saransk, The Republic of Mordovia, 430005, Russia; Russian Academy of Architecture and Building Science, Research Institute of Building Physics, Moscow, Locomotive passage, 21, 127238, Russia ' Department of Building Structures, Ogarev Mordovia State University, 68 Bolshevistskaya Street, Saransk, The Republic of Mordovia, 430005, Russia
epoxy polymers
moisture content
tensile strength
elongation
reversible changes
irreversible changes
synergistic changes
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Behavioural programs can function as biological genes participating in the social evolution
http://www.inderscience.com/link.php?id=136505
This review aims to answer the question - whether it is possible to identify such behavioural patterns or 'programs' that largely determine the trajectory of human civilisation. It's proposed to search for an answer in the neuroevolutionary paradigm. That means society being considered as a neural network where people are equivalent to neurons, social bonds are equivalent to synapses, and a social group is compared to computational circuit for making collective decisions. The structure of social groups and the general principles of information processing by the group are influenced by biological programs - genes. Genes determine typical profiles of behaviour patterns in individual group members. Besides, learned or imprinted behavioural programs can influence both the group structure and the information flow pathways. The necessity and sufficiency of three parameters are discussed: linguistic, professional, and cultural identities. They are determined by learned behaviour programs and are involved in setting up a social neural network. Whereas linguistic and professional settings are closely related to the efficiency of the individual and for this reason are under strict evolutionary control on the horizon of one or two generations, cultural code settings can have their effect on the time scale of tens and hundreds of generations, and are not so markedly related to individual efficiency. It is in them that we should look for programs setting the long-term settings of large sociomorphic neural networks - at the level of nationalities and supranational civilisations. One example of such tuning is values - a structure of priorities shared by a significant number of members of a social group. Works devoted to vectorisation and quantitative comparison of values in groups are considered.
Behavioural programs can function as biological genes participating in the social evolution
D.S. Andreyuk; A.A. Amelkina
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 69 - 81
This review aims to answer the question - whether it is possible to identify such behavioural patterns or 'programs' that largely determine the trajectory of human civilisation. It's proposed to search for an answer in the neuroevolutionary paradigm. That means society being considered as a neural network where people are equivalent to neurons, social bonds are equivalent to synapses, and a social group is compared to computational circuit for making collective decisions. The structure of social groups and the general principles of information processing by the group are influenced by biological programs - genes. Genes determine typical profiles of behaviour patterns in individual group members. Besides, learned or imprinted behavioural programs can influence both the group structure and the information flow pathways. The necessity and sufficiency of three parameters are discussed: linguistic, professional, and cultural identities. They are determined by learned behaviour programs and are involved in setting up a social neural network. Whereas linguistic and professional settings are closely related to the efficiency of the individual and for this reason are under strict evolutionary control on the horizon of one or two generations, cultural code settings can have their effect on the time scale of tens and hundreds of generations, and are not so markedly related to individual efficiency. It is in them that we should look for programs setting the long-term settings of large sociomorphic neural networks - at the level of nationalities and supranational civilisations. One example of such tuning is values - a structure of priorities shared by a significant number of members of a social group. Works devoted to vectorisation and quantitative comparison of values in groups are considered.]]>
10.1504/IJNT.2024.136505
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 69 - 81
D.S. Andreyuk
A.A. Amelkina
Faculty of Economics, Lomonosov Moscow State University, GSP-1, 1-46 Leninskiye Gory, Moscow, 119991, Russia; Mental-Health Clinic No.1 named after N.A. Alexeev of Moscow Health Department, Moscow, 117152, Russia ' Department of Cultures, Politics, and Society, University of Turin, Via Verdi 8 †10124 Torino, Italy
social groups
social behaviour
neuroevolutionary paradigm
sociomorphic neural networks
cultural identity
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Computer simulation of the neutralisation of superoxide radicals by the fullerenol-24 nanomolecular system
http://www.inderscience.com/link.php?id=136508
This paper presents the results of computer simulation of the process of deactivation of a superoxide ion by a fullerenol molecule С<SUB align="right">60(OH)<SUB align="right">24 at the level of the semiempirical PM3 method. The electron density distribution for the fullerenol molecule was obtained by modelling at the level B3LYP/6-31G(d, p). To carry out computer modelling, the freely available Orca software package was used. The analysis of the presumptive mechanism of the reaction is carried out by simulating different sites of superoxide radical ion docking to one of the carbon atoms of the fullerenol molecule. It is shown that it is energetically favourable for particles of the superoxide ion О<SUB align="right">2<SUP align="right">-</SUP> to dock with the fullerenol surface in neighbouring positions. The process of interaction with superoxide radicals of fullerenol with two dissociated OH groups at the docking carbon atom is energetically more favourable than the process in the case when OH groups do not dissociate to O<SUP align="right">-</SUP>. Understanding such subtleties in the interaction of radical particles and fullerenol in the future will allow the development of effective antioxidant substances of a new generation.
Computer simulation of the neutralisation of superoxide radicals by the fullerenol-24 nanomolecular system
O.A. Maslova; A.V. Ryabykh; S.A. Beznosyuk
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 82 - 87
This paper presents the results of computer simulation of the process of deactivation of a superoxide ion by a fullerenol molecule С<SUB align="right">60(OH)<SUB align="right">24 at the level of the semiempirical PM3 method. The electron density distribution for the fullerenol molecule was obtained by modelling at the level B3LYP/6-31G(d, p). To carry out computer modelling, the freely available Orca software package was used. The analysis of the presumptive mechanism of the reaction is carried out by simulating different sites of superoxide radical ion docking to one of the carbon atoms of the fullerenol molecule. It is shown that it is energetically favourable for particles of the superoxide ion О<SUB align="right">2<SUP align="right">-</SUP> to dock with the fullerenol surface in neighbouring positions. The process of interaction with superoxide radicals of fullerenol with two dissociated OH groups at the docking carbon atom is energetically more favourable than the process in the case when OH groups do not dissociate to O<SUP align="right">-</SUP>. Understanding such subtleties in the interaction of radical particles and fullerenol in the future will allow the development of effective antioxidant substances of a new generation.]]>
10.1504/IJNT.2024.136508
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 82 - 87
O.A. Maslova
A.V. Ryabykh
S.A. Beznosyuk
Department of Physical and Inorganic Chemistry, Altai State University, Barnaul, 656049, Russia ' Department of Physical and Inorganic Chemistry, Altai State University, Barnaul, 656049, Russia ' Department of Physical and Inorganic Chemistry, Altai State University, Barnaul, 656049, Russia
fullerenol
superoxide
radical
computer simulation
interaction
semiempirical method PM3
hybrid functional B3LYP
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Composite materials in a binary CuBr - SbBr3 system
http://www.inderscience.com/link.php?id=136511
Simple bromides of copper and antimony are still in a focus of interest as compounds or products of decomposition of new complex halides for optoelectronics and photovoltaics. Here the interaction of copper(I) bromide and antimony(III) bromide are investigated on heating up to 650°C. No texturing effects are found for both simple bromides, the grains are shapeless and fused together. It has been demonstrated that SbBr<SUB align="right">3 releases from the melt resulting in porous ceramic products with lack of antimony to copper. No new additional double bromides are observed in the binary system CuBr - SbBr<SUB align="right">3.
Composite materials in a binary CuBr - SbBr3 system
Rustam K. Kamilov; Nikolay I. Artemiev; Maqsudjon M. Ibrohimov; Leonid S. Lepnev; Alexander V. Knotko; Anastasia V. Grigorieva
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 88 - 98
Simple bromides of copper and antimony are still in a focus of interest as compounds or products of decomposition of new complex halides for optoelectronics and photovoltaics. Here the interaction of copper(I) bromide and antimony(III) bromide are investigated on heating up to 650°C. No texturing effects are found for both simple bromides, the grains are shapeless and fused together. It has been demonstrated that SbBr<SUB align="right">3 releases from the melt resulting in porous ceramic products with lack of antimony to copper. No new additional double bromides are observed in the binary system CuBr - SbBr<SUB align="right">3. ]]>
10.1504/IJNT.2024.136511
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 88 - 98
Rustam K. Kamilov
Nikolay I. Artemiev
Maqsudjon M. Ibrohimov
Leonid S. Lepnev
Alexander V. Knotko
Anastasia V. Grigorieva
Department of Materials Science, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russia ' Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russia ' Department of Materials Science, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russia ' Lebedev Physical Institute of the Russian Academy of Sciences, Leninskiy prospect 53, 119333 Moscow, Russia ' Department of Materials Science, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russia ' Department of Materials Science, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russia; Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119991 Moscow, Russia
copper(I) bromide
indium(III) bromide
melt crystallisation
elemental composition
photoluminescence
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Synthesis and perspectives of Ag/In2O3 inverse opal
http://www.inderscience.com/link.php?id=136514
Indium(III) hydroxide nanopowder has been successfully obtained by hydrolysis of indium chloride in alkaline alcohol solutions. Its suspension has been used to form thick films of In<SUB align="right">2O<SUB align="right">3 using a drop-coating method with a following thermal decomposition of indium hydroxide upon the glass substrate. Concentrations of precursors have been varied to influence well a particle size in colloids. The same synthesis has been applied to form In<SUB align="right">2O<SUB align="right">3 inverse opals by impregnation of polystyrene opals with an ethanol suspension of In(OH)<SUB align="right">3 nanopowder of the finest particles. Phase composition, temperature of decomposition and micromorphology of the samples have been investigated by X-ray phase analysis, dynamic light scattering, thermal analysis, transmission and scanning electron microscopies.
Synthesis and perspectives of Ag/In2O3 inverse opal
Alisa V. Lyutova; Shodruz T. Umedov; Mikhail O. Astafurov; Rustam I. Arabov; Maqsudjon M. Ibrohimov; Tatyana V. Fillipova; Mikhail R. Chekin; Anastasia V. Grigorieva
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 99 - 111
Indium(III) hydroxide nanopowder has been successfully obtained by hydrolysis of indium chloride in alkaline alcohol solutions. Its suspension has been used to form thick films of In<SUB align="right">2O<SUB align="right">3 using a drop-coating method with a following thermal decomposition of indium hydroxide upon the glass substrate. Concentrations of precursors have been varied to influence well a particle size in colloids. The same synthesis has been applied to form In<SUB align="right">2O<SUB align="right">3 inverse opals by impregnation of polystyrene opals with an ethanol suspension of In(OH)<SUB align="right">3 nanopowder of the finest particles. Phase composition, temperature of decomposition and micromorphology of the samples have been investigated by X-ray phase analysis, dynamic light scattering, thermal analysis, transmission and scanning electron microscopies.]]>
10.1504/IJNT.2024.136514
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 99 - 111
Alisa V. Lyutova
Shodruz T. Umedov
Mikhail O. Astafurov
Rustam I. Arabov
Maqsudjon M. Ibrohimov
Tatyana V. Fillipova
Mikhail R. Chekin
Anastasia V. Grigorieva
Lomonosov Moscow State University, Leninskiye gory 1/3, 119991, Moscow, Russia ' Lomonosov Moscow State University, Leninskiye gory 1/3, 119991, Moscow, Russia ' Lomonosov Moscow State University, Leninskiye gory 1/3, 119991, Moscow, Russia ' Lomonosov Moscow State University, Leninskiye gory 1/3, 119991, Moscow, Russia ' Lomonosov Moscow State University, Leninskiye gory 1/3, 119991, Moscow, Russia ' Lomonosov Moscow State University, Leninskiye gory 1/3, 119991, Moscow, Russia ' Lomonosov Moscow State University, Leninskiye gory 1/3, 119991, Moscow, Russia ' Lomonosov Moscow State University, Leninskiye gory 1/3, 119991, Moscow, Russia
indium oxide
nanopowder
inverse opal
impregnation synthesis
indium hydroxide In(OH)3
hydrolysis
thermal decomposition
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Predictive protein module based on PPI network and double clustering algorithm
http://www.inderscience.com/link.php?id=136485
Protein-protein interaction (PPI) is a kind of biomolecular network which plays an important role in biological activities. In order to improve the accuracy of protein function module prediction, obtain protein function module and run timely, this paper proposes predictive protein module based on PPI network and double clustering algorithm (ISCC), which considers the characteristics of PPI network and considers nodes as two-dimensional data points. First of all, improved density-based spatial clustering of applications with noise (IDBSCAN) determines the central cluster, and then uses spectral clustering (SC) to redivide the weight; secondly, CFSFDP and Chameleon algorithm are used to filter the similarity of the central cluster, and use support vector machine (SVM) to get the final clustering result. Finally, the experiments are compared with CDUN, EA, MCL and MCODE in terms of accuracy, sensitivity, F value and the number of protein functional modules. The experimental results show that the F value of ISCCD is 70% higher than that of EA, the number of recognition modules is 257 higher than that of CDUN, and the running time is 494s faster than that of MCODE.
Predictive protein module based on PPI network and double clustering algorithm
Sicong Huo; Quansheng Liu; Tao Lu
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 112 - 128
Protein-protein interaction (PPI) is a kind of biomolecular network which plays an important role in biological activities. In order to improve the accuracy of protein function module prediction, obtain protein function module and run timely, this paper proposes predictive protein module based on PPI network and double clustering algorithm (ISCC), which considers the characteristics of PPI network and considers nodes as two-dimensional data points. First of all, improved density-based spatial clustering of applications with noise (IDBSCAN) determines the central cluster, and then uses spectral clustering (SC) to redivide the weight; secondly, CFSFDP and Chameleon algorithm are used to filter the similarity of the central cluster, and use support vector machine (SVM) to get the final clustering result. Finally, the experiments are compared with CDUN, EA, MCL and MCODE in terms of accuracy, sensitivity, F value and the number of protein functional modules. The experimental results show that the F value of ISCCD is 70% higher than that of EA, the number of recognition modules is 257 higher than that of CDUN, and the running time is 494s faster than that of MCODE.]]>
10.1504/IJNT.2024.136485
International Journal of Nanotechnology, Vol. 21, No. 1/2 (2024) pp. 112 - 128
Sicong Huo
Quansheng Liu
Tao Lu
College of information engineering, Nanning University, Nanning, Guangxi, 530200, China ' College of information engineering, Nanning University, Nanning, Guangxi, 530200, China ' College of information engineering, Nanning University, Nanning, Guangxi, 530200, China
PPI network
protein function module prediction
clustering
SVM
support vector machine
IDBSCAN
improved density-based spatial clustering of applications with noise
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