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Visual representation of the human body in the soviet agitation posters
Sergienko Daria 고려대학교 응용문화연구소 2022 에피스테메 Vol.- No.27
This research focuses on the information contained in the representations of the human body depicted in the Soviet Union’s agitation posters. Various tools and methods are used to analyze the posters’ semiotic signs according to the different values of the signs and aspects of the relations between signs, focusing on the different semiotic layers that enable the transfer of information to the recipient in visual representation. This research highlights the agitational power of the Soviet agitation posters on society that was effected through the representation of the human body.
Lahel, A.,Fanta, A.B.,Sergienko, N.,Shakya, M.,Lopez, M.E.,Behera, S.K.,Rene, E.R.,Park, H.S. Elsevier Applied Science 2016 International biodeterioration & biodegradation Vol.113 No.-
This study focused on investigating the key parameters that influences carbon dioxide (CO<SUB>2</SUB>) production during the bioremediation of diesel contaminated soil. The effects of diesel concentration, moisture content and biomass dose were investigated in batch experiments, for 20 days, to ascertain the CO<SUB>2</SUB> production and the amount of diesel mineralized. A regression model based on full factorial design of experiments was developed to predict the CO<SUB>2</SUB> production. Based on the F and p values from Analysis of Variance (ANOVA) results, the main effects of process parameters affected diesel bioremediation strongly than the 2-way and 3-way interaction effects. The highest total petroleum hydrocarbon (TPH) mineralized and the maximum CO<SUB>2</SUB> productions were ~3000 mg/kg-soil and ~10,000 mg/kg-soil, respectively, at a diesel concentration of 10,000 mg/kg-soil, 20% moisture content and a biomass dose of 275 mg/kg-soil.
Composite PEO-Coatings as Defence Against Corrosion and Wear: A Review
S. V. Gnedenkov,S. L. Sinebryukhov,V. I. Sergienko,A. S. Gnedenkov 한국부식방식학회 2019 Corrosion Science and Technology Vol.18 No.5
This paper reviews recent approaches to develop composite polymer-containing coatings by plasma electrolyticoxidation (PEO) using various low-molecular fractions of superdispersed polytetrafluoroethylene (SPTFE). The features of the unique approaches to form the composite polymer-containing coating on the surfaceof MA8 magnesium alloy were summarized. Improvement in the corrosion and tribological behavior ofthe polymer-containing coating can be attributed to the morphology and insulating properties of the surfacelayers and solid lubrication effect of the SPTFE particles. Such multifunctional coatings have high corrosionresistance (Rp = 3.0×107 Ω cm2) and low friction coefficient (0.13) under dry wear conditions. The effectof dispersity and x-potential of the nanoscale materials (ZrO2 and SiO2) used as electrolyte componentsfor the plasma electrolytic oxidation on the composition and properties of the coatings was investigated. Improvement in the protective properties of the coatings with the incorporated nanoparticles was explainedby the greater thickness of the protective layer, relatively low porosity, and the presence of narrow non-throughpores. The impedance modulus measured at low frequency for the zirconia-containing layer (|Z|f=0.01 Hz =1.8×106 Ω·cm2) was more than one order of magnitude higher than that of the PEO-coating formed inthe nanoparticles-free electrolyte (|Z|f=0.01 Hz = 5.4×104 Ω·cm2).
Rehman, Aafaq ur,Baek, Jin Woong,Rene, Eldon R.,Sergienko, Natalia,Behera, Shishir Kumar,Park, Hung-Suck Elsevier 2018 Process safety and environmental protection Vol.118 No.-
<P><B>Abstract</B></P> <P>Climate change issues and acid rain episodes have triggered new research directions and the conceptualization of new preventive approaches to reduce toxic gases from entering the environment. The reduction of carbon dioxide (CO<SUB>2</SUB>) levels in the indoor environment are also one of the challenging human safety issues during emergency incidents and rescues; for instance, a building fire. The use of an activated carbon fiber (ACF) based mask is not only effective to filter CO<SUB>2</SUB> but it is also practically easy to use during such demanding situations. Such modified adsorbents will have high adsorption volume, fast adsorption rates and good thermal, acid and alkaline resistance properties. For the emergency mode considering fires, the major task is atmospheric recovery. Thus, CO<SUB>2</SUB> concentration in the post-fire smoke could be high. The smoke in the room causes suffocations and unconsciousness leading to fatal injuries. In this study, ACF was modified using copper nitrate trihydrate [Cu (NO<SUB>3</SUB>)<SUB>2</SUB> <SUP>.</SUP>3H<SUB>2</SUB>O] by impregnation and carbonization (450°C), followed by its characterization. The modified ACF (Cu-ACF-12) showed large surface area (1147m<SUP>2</SUP> g<SUP>−1</SUP>), high micropore volume (0.45cm<SUP>3</SUP> g<SUP>−1</SUP>) and an average pore size of 1.57nm. CO<SUB>2</SUB> removal tests were carried out in a lab scale fixed bed adsorption column using the modified ACF. The process parameters were optimized based on a Box-Behnken Design (BBD) and tested in the following ranges: gas flow rate – 150–250mlmin<SUP>−1</SUP>, moisture content – 0–40% and modification of the ACF impregnated with copper (Cu) – 4–12wt.%. The experimental results were statistically interpreted to elucidate the main and interaction effects. The modification of ACF showed positive effects on CO<SUB>2</SUB> removal, while gas flow rate and moisture content decreased the CO<SUB>2</SUB> removal. Under the optimal conditions, (gas flow rate – 150mlmin<SUP>−1</SUP>, moisture content – 0% and modification of the ACF – 8%), CO<SUB>2</SUB> removal capacity of 2.31mmol of CO<SUB>2</SUB> g<SUP>−1</SUP> Cu-ACF was obtained.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Modified activated carbon fiber (ACF) for CO<SUB>2</SUB> removal. </LI> <LI> Fixed bed adsorption column using modified ACF for process parameters optimization. </LI> <LI> Optimum CO<SUB>2</SUB> removal capacity of 2.31mmol of CO<SUB>2</SUB> g<SUP>−1</SUP> Cu-ACF at gas flow rate: 150mlmin<SUP>−1</SUP>, moisture content: 0% and modification of the ACF: 8%. </LI> <LI> Close agreement between the predicted and observed CO<SUB>2</SUB> removal capacity. </LI> </UL> </P>
Corrosion Monitoring of PEO-Pretreated Magnesium Alloys
Gnedenkov, A.S.,Sinebryukhov, S.L.,Mashtalyar, D.V.,Gnedenkov, S.V.,Sergienko, V.I. The Corrosion Science Society of Korea 2017 Corrosion Science and Technology Vol.16 No.2
The MA8 alloy (formula Mg-Mn-Се) has been shown to have greater corrosion stability than the VMD10 magnesium alloy (formula Mg-Zn-Zr-Y) in chloride-containing solutions by Scanning Vibrating Electrode Technique (SVET) and by optical microscopy, gravimetry, and volumetry. It has been established that the crucial factor for the corrosion activity of these samples is the occurrence of microgalvanic coupling at the sample surface. The peculiarities of the kinetics and mechanism of the corrosion in the local heterogeneous regions of the magnesium alloy surface were investigated by localized electrochemical techniques. The stages of the corrosion process in artificial defects in the coating obtained by plasma electrolytic oxidation (PEO) at the surface of the MA8 magnesium alloy were also studied. The analysis of the experimental data enabled us to determine that the corrosion process in the defect zone develops predominantly at the magnesium/coating interface. Based on the measurements of the corrosion rate of the samples with PEO and composite polymer-containing coatings, the best anticorrosion properties were displayed by the composite polymer-containing coatings.
Lee, Young-Sook,Kim, Yong Ha,Kim, Kyung-Chan,Kwak, Young-Sil,Sergienko, Timothy,Kirkwood, Sheila,Johnsen, Magnar G. American Geophysical Union 2018 JOURNAL OF GEOPHYSICAL RESEARCH. SPACE PHYSICS Vol.123 No.6
<P>By analyzing a data set from the European Incoherent SCATter (EISCAT) Very High Frequency (VHF) radar at Tromso, we find that both radar reflectivity and upward ion velocity in a polar mesospheric summer echo (PMSE) layer simultaneously increased at the commencement of a local geomagnetic disturbance, which occurred at midnight on 9 July 2013. The onset of the upward velocity was followed by periodic repetition of similar to 5 min during the initial 30-min stage, and then at later stage the vertical velocity oscillated with similar to 7-and similar to 20-min periodicities at 85-to 90-km altitudes. The similar to 5-min periodicity is close to the buoyancy period, and the similar to 7-and similar to 20min periodicities are consistent with gravity waves, thus suggesting that gravity waves can be generated by the effects of the geomagnetic disturbance. On the other hand, the variation of PMSE intensity (85-90 km) was in phase with fluctuations of electron densities (90-110 km) with similar to 12-and similar to 13-min periodicities at the initial and later stages, respectively. The initial creation of PMSE can be attributed to both the sudden onset of particle precipitation and ice particles produced by adiabatic cooling during the rapid updraft, as detected by large upward velocity. Our periodogram analysis suggests that variations of PMSE intensity seem to follow the same periods with E region electron density, which is moduled by energetic electron precipitation, while vertical velocity oscillates at atmospheric gravity wave periods.</P>
Sergey V. Gnedenkov,Denis P. Opra,Sergey L. Sinebryukhov,Alexander K. Tsvetnikov,Alexander Y. Ustinov,Valentin I. Sergienko 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.3
Electrochemical energy production has been extensively used in large scale applications. At present,organic compounds are considered as efficient and environmentally friendly electrode materials. Thepaper describes the study of the possibility of using hydrolysis lignin as the lithium battery cathodematerial. Hydrolysis lignin features have been investigated by the impedance spectroscopy, scanningelectron microscopy, and energy-dispersive X-ray spectroscopy. The discharge performance ofhydrolysis lignin-based lithium battery was investigated at room temperature using 1 M LiBF4 in gbutyrolactonelectrolyte system. It was found that the specific capacity of hydrolysis lignin was equal to450 mAh g1 at a discharge current density of 25 mA/cm2. Two main voltage plateaus located at ~1.8 and~1.1 V were observed. The chemical composition of cathode materials upon battery discharge down to0.9 V was studied by the X-ray photoelectron spectroscopy and infrared spectroscopy. The suggestionson possible electrochemical reactions occurring in the lithium/hydrolysis lignin system were made onthe basis of the products composition analysis. The results demonstrate the potential of hydrolysis ligninbased batteries to be used as low-rate power sources.