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RISS 인기검색어
- 검색키워드
- 저자 : Zade, Ganesh S. (검색결과 5 건)
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A State-of-the-Art Review of Graphene-Based Corrosion Resistant Coatings for Metal Protection
Zade, Ganesh S.,Patil, Kiran D. The Corrosion Science Society of Korea 2022 Corrosion Science and Technology Vol.21 No.5
Any design engineer or coating formulator's primary objective is to protect metals. Large investments in terms of money, time, labour, and other resources are necessary for constructing large-scale machinery and structures. In terms of economy, the structure's lifespan should be as long as feasible to create revenue. It is becoming essential to protect metal substrates from corrosion to prolong the lifespan of such huge structures. One of the most exciting, durable, useful, and effective methods to protect metals from corrosion is the application of corrosion-resistant coating. Graphene is a novel material with a wide range of applications because of its extraordinary features. The use of graphene in coating creates an obstacle and complicates the path for corrosive medium to reach the metal. As the path to the metal elongates, the corrosion medium takes longer to reach the metal. Thus, metal corrosion can be avoided. In this paper, the importance of graphene in coating formulation is discussed, including chemical modifications of graphene, the effect of graphene concentration on corrosion inhibition, and the contact angle of coating. This review also highlights the significance of water-based corrosion-resistant coating for preventing environmental damage.
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End-Effect Compensation in Linear Induction Motor Drives
Satvati, Mohammad Reza,Vaez-Zade, Sadegh The Korean Institute of Power Electronics 2011 JOURNAL OF POWER ELECTRONICS Vol.11 No.5
In this paper a control system with a high performance dynamic response for linear induction motors (LIMs) is proposed which takes into account the end-effect in both the machine model and the control system. Primary flux oriented control has two major drawbacks i.e. a lack of decoupling of the thrust and the flux and a possibility of system instability due to the end-effect. Both of these drawbacks have been dealt with in this paper. A flux estimation method is proposed to correct the flux orientation error caused by the end effect. Extensive motor performance evaluations under the proposed control system prove its superiority over conventional vector control.
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Investigation of luminescence processes in Li6Gd(BO3)3:Eu3+ phosphor
Yawalkar, M. M.,Zade, G. D.,Singh, V.,Dhoble, S. J. Springer Science + Business Media 2017 Journal of materials science Materials in electron Vol.28 No.1
<P>Li6Gd(BO3)(3) phosphor doped with varying concentrations of europium was synthesized using a solid-state reaction route. Powder X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy methods were used to characterize the prepared phosphor. Photoluminescence excitation spectra of the Li6Gd(BO3)(3):Eu3+ phosphors exhibited bands due to both Eu3+ and Gd3+ ions. Upon excitation of the host at 275 nm, the energy absorbed by Gd3+ ions can be transferred to Eu3+ ions in the Li6Gd(BO3)(3) luminescent materials. The optimum concentration of Eu3+ ions for maximum luminescence yield was evaluated for the system. Color coordinates of prepared compound were calculated and plotted on the CIE diagram. The fluorescence lifetime of Eu3+ ions was found to be 2.12 ms. TL properties of the phosphor showed dominant peak at around 231 degrees C in addition to small shoulders at 131 and 367 degrees C. Various trap parameters and the kinetics for the glow peak were evaluated using the Chen's peak shape method.</P>
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( Somayyeh Ayenehchi ),( Mohammad Reza Esmaeil Zade Ghandehari ) 국제태권도학회 2017 International Symposium for Taekwondo Studies Vol.2017 No.-
Purpose: This paper aims to investigate the relationship between work-family conflict man agement and job satisfaction in Iranian International Taekwondo Referees. Methods: The study population included all the active Iranian international Taekwondo ref erees judging in internal and external tournaments from 2016 to 2017. The total population was 203 referees (154 male, 49 female), but our sample consisted of 105 male and 44 female referees, selected based on Morgan’s sample size table and stratified sampling method. Results: Based on the test results; there is no significant relationship between work-family conflict and job satisfaction of the Iranian international Taekwondo referees (p > 0.05). On the basis of variance analysis between work-family conflict and job satisfaction of the Ira nian international Taekwondo referees considering the gender characteristics, no significant relationship was found (p > 0.05). However, there was a significant relationship between work-family conflict and job satisfaction of the Iranian international Taekwondo referees and individual work and marital status characteristics (p > 0.05). Conclusions: Iranian international Taekwondo referees spend a lot of time on becoming professionals. Thus, Iran Taekwondo Federation’s failure to pay due attention to them and create career development opportunities for them results in the referees’ decreased loyalty to their jobs. Therefore, Iranian international Taekwondo referees will have job satisfaction when they are ensured of having job security, appropriate incomes, and suitable retirement insurance.
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