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Evidence for a narrow structure at W∼1.68 GeV in η photoproduction off the neutron
Kuznetsov, V.,Churikova, S.,Gervino, G.,Ghio, F.,Girolami, B.,Ivanov, D.,Jang, J.,Kim, A.,Kim, W.,Ni, A.,Vorobiev, Yu.,Yurov, M.,Zabrodin, A. North-Holland Pub. Co 2007 Physics letters: B Vol.647 No.1
New results on quasi-free η photoproduction on the neutron and proton bound in a deuteron target are presented. The γn->ηn quasi-free cross section reveals a bump-like structure which is not seen in the cross section on the proton. This structure may signal the existence of a relatively narrow (M∼1.68 GeV, Γ=<30 MeV) baryon state.
Marina V. Vasiljeva,Vadim V. Ponkratov,Nikolay V. Kuznetsov,Maksim S. Maramygin,Irina V. Osinovskaya 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.4
This paper reports a methodological approach to quantitatively assess the effectiveness of the Blue Ocean Strategy inthe Russian steel market that makes the competition irrelevant. Based on the simulation method, qualitative and quantitative dependencies are determined between firm economic performance and the implementation of the Blue Ocean,Red Ocean, and Monopoly strategies. It is shown by the example of the Russian steel market that Blue Ocean Strategyenables to get a significantly higher level of profit for the enterprise as compared to the implementation of the RedOcean Strategy, even in a monopolistic market. This is provided by creating innovative value, manifested in the minimization of social losses in the market, ensuring the possibility of establishing a higher market value while reducingproduction costs. The results of the paper may serve as an aid to the effective development of small and medium-sizedbusinesses by providing a sound quantitative framework to quantify the value of innovation. This article gives an insight into how firms can create blue oceans of uncontested market space to prosper in the future, providing an opportunity to evaluate the effectiveness of the chosen strategy to minimize risks.
Droplet Spreading and Wettability of Abrasive Processed Aluminum Alloy Surfaces
G. V. Kuznetsov,E. G. Orlova,D. V. Feoktistov,A. G. Islamova,A. V. Zhuikov 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.1
One of the main cause of a droplet metastable state is found to be surface roughness. This state is characterized by a largecontact angle hysteresis and condition when the static contact angle is larger than the advancing dynamic contact angle. Besides the texture, other factors can influence the deviation from the equilibrium state, in particular, the fluid flow rate (thegrowth rate of a droplet) affecting the contact line speed. An experimental study was done to determine the effect of roughnessand fluid flow rate on wetting of aluminum-magnesium alloy surfaces with random roughness processed by abrasivepolishing. Three-dimensional roughness parameters were used to evaluate their texture. The correlations between theseparameters, static, advancing and receding dynamic contact angles, hysteresis, and contact line speed were obtained. Themolecular-kinetic theory of wetting was used to interpret the dynamic contact angle data.
Photoluminescence of porous silicon coated by SILD method with LaF3nanolayers
Y.S. Milovanov,V.A. Skryshevsky,V.P. Tolstoy,L.B. Gulina,I.V. Gavrilchenko,G.V. Kuznetsov 한국물리학회 2013 Current Applied Physics Vol.13 No.8
The method of lanthanum fluoride passivating layer synthesis in the matrix of porous silicon by successive ionic layer deposition was elaborated and optimized. Luminescence and FTIR of obtained structures demonstrate the crucial role of the chemical composition of silicon nanocrystallite surface in the formation of radiative recombination channels and in the stability of porous silicon photoluminescence. The combination of high optical transparency of LaF3 layers and low recombination losses in silicon covered with such layers allows to recommend the lanthanum fluoride film as an effective passivating coating for silicon optoelectronics devices.
Study of Catalysts for Catalytic Burners for Fuel Cell Power Plant Reformers
Ismagilov, Zinfer R.,Kerzhentsev, Mikhail A.,Sazonov, Vladimir A.,Tsykoza, Lidia T.,Shikina, Nadezhda V.,Kuznetsov, Vadim V.,Ushakov, Vladimir A.,Mishania, Sergey V.,Kozhukhar, Nikolay G.,Russo, Genna 한국화학공학회 2003 Korean Journal of Chemical Engineering Vol.20 No.3
Catalytic burners for fuel cell power plant reformers are alternatives to conventional flame burners. Their application is expected to provide uniform temperatures in the reformer, efficient use of low-calorific gaseous byproducts and reduction of pollutant emissions. For testing in the burners, a series of spherical Pd/CeO_2/Al_2O_3 catalysts were prepared. An optimum concentration of ceria providing the highest thermal stability of catalysts was determined. An effect of catalyst activation in the reaction mixture-1% methane in air was observed. A series of Mn containing oxide catalysts on spherical y-Al_2O_3 or (y+x)-Al_2O_3, both pure and doped with La, Ce and Mg oxides were prepared. The catalysts were characterized by chemical analysis, X-ray phase analysis, BET surface area and activity measurements in methane oxidation. A batch of Mn-Mg_La-Al-O catalyst was prepared for further long-term testing in a model reformer with a catalytic burner. A model reformer with a catalytic burner was designed and fabricated for testing in the composition of the bench-scale Fuel Cell Power Plant, Preliminary testing of this catalyst showed that it provided complete methane combustion an the specified operational temperatures over 900℃.
Safin V. A.,Kuznetsov P. N.,Avid B.,Kuznetsova L. I.,Fan Xing,Ismagilov Z. R. 한국탄소학회 2022 Carbon Letters Vol.32 No.4
The team has studied the relationship between the ability of the coals to be dissolved in crude anthracene oil and their composition. The coal samples taken from different deposits in Russia and Mongolia were characterized by different stages of metamorphism and tested by the Fourier transform infrared spectroscopy and Carbon-13 nuclear magnetic resonance. The data of a correlation analysis enabled us to find out that an amount of aromatic structures in coal macromolecules provided the main influence on the thermal dissolution of the coals. The middle-rank coals had the highest rates of coal organic matter transfer to liquid products. The data showed that the dissolution process was accompanied by destruction of weak bonds among aliphatic groups. The amount of methylene groups in the aliphatic part of coal macromolecules had a direct impact on conversion of the coal organic matter into soluble products.
First Test of the CTOF@CLAS12 Detector Counter with Proton Beams
니안드레이,V. Kuznetsov,S. Chebotarev,H. Dho,A. Kim,김우영,E. Milman,M. Lee,T. Yang 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
CTOF@CLAS12 plastic scintillator counter was tested with proton beam at Korea Institute of Radiological and Medical Sciences (KIRAMS). The counter have been designed and constructed as a plastic scintillation bar coupled with the 1.5 and the 2 inches of diameter fine mesh photomultiplier tubes (FM-PMTs). The dependence of the TOF resolution on the light output has dened. Obtained results of the 1.5'', 2'' FM-PMTs' timing and gain performances in magnetic eld confirm their suitability for precise particle identification in the CLAS12 future detector.