Key Research Areas : Electronic instrumentation, Systems design, Ultrasonic instrumentation, Non-destructive testing, Electronic product design, EMI/EMC issues, Acoustic sensors, Underwater acoustics, Surface acoustic wave devices, MEMS.
Phone No: +91-361-2582509 | Email: harshal@iitg.ac.in| Room No: 0207
1. Roy N., Mitra S., Nemade H.B., Mandal T.K., "Non-Enzymatic Urea Sensing Based on MWCNT Nanocomposite", IEEE Sensors Journal , vol.21, issue 17 , (DOI - 10.1109/JSEN.2021.3088752) ,pp.18417-18424, [2021].
2. Biswas M., Majhi S., Nemade H., "Design and Analysis of a High-Efficiency Two-Phase Interleaved Boost Converter with Modified Conversion Ratio and Low Voltage Stress", Journal of Circuits, Systems and Computers , vol.30, issue 9 , (DOI - 10.1142/S0218126621501619) [2021].
3. Roy A., Nemade H.B., Bhattacharjee R., "Radar waveform diversity using nonlinear chirp with improved sidelobe level performance", AEU - International Journal of Electronics and Communications , vol.136 , (DOI - 10.1016/j.aeue.2021.153768) [2021].
4. Palsaniya S., Nemade H.B., Dasmahapatra A.K., "Hierarchical PANI-RGO-ZnO ternary nanocomposites for symmetric tandem supercapacitor", Journal of Physics and Chemistry of Solids , vol.154 , (DOI - 10.1016/j.jpcs.2021.110081) [2021].
5. Basak M., Mitra S., Agnihotri S.K., Jain A., Vyas A., Bhatt M.L.B., Sachan R., Sachdev M., Nemade H.B., Bandyopadhyay D., "Noninvasive Point-of-Care Nanobiosensing of Cervical Cancer as an Auxiliary to Pap-Smear Test", ACS Applied Bio Materials , vol.4, issue 6 , (DOI - 10.1021/acsabm.1c00470) ,pp.5378-5390, [2021].
6. Biswas M., Majhi S., Nemade H.B., "A High Step-Down DC-DC Converter with Reduced Inductor Current Ripple and Low Voltage Stress", IEEE Transactions on Industry Applications , vol.57, issue 2 , (DOI - 10.1109/TIA.2020.3046703) ,pp.1559-1571, [2021].
7. Singh N.S., Mayanglambam F., Nemade H.B., Giri P.K., "Facile synthetic route to exfoliate high quality and super-large lateral size graphene-based sheets and their applications in SERS and CO2gas sensing", RSC Advances , vol.11, issue 16 , (DOI - 10.1039/d0ra10270a) ,pp.9488-9504, [2021].
8. Ranjan G., Tiwari R., Nemade H.B., "Fault identification in cracked rotor-AMB system using magnetic excitations based on multi harmonic influence coefficient method", Inverse Problems in Science and Engineering , (DOI - 10.1080/17415977.2021.1952409) [2021].
9. Kundu S., Nemade H.B., "Piezoelectric vibration energy harvester with tapered substrate thickness for uniform stress", Microsystem Technologies , vol.27, issue 1 , (DOI - 10.1007/s00542-020-04922-6) ,pp.105-113, [2021].
10. Palsaniya S., Nemade H.B., Dasmahapatra A.K., "Hierarchical Nylon-6/reduced graphene oxide/polyaniline nanocomposites with enhanced dielectric properties for energy storage applications", Journal of Energy Storage , vol.32 , (DOI - 10.1016/j.est.2020.101821) [2020].
11. Roy N., Sinha R., Daniel T.T., Nemade H.B., Mandal T.K., "Highly Sensitive Room Temperature CO Gas Sensor Based on MWCNT-PDDA Composite", IEEE Sensors Journal , vol.20, issue 22 , (DOI - 10.1109/JSEN.2020.3004994) ,pp.13245-13252, [2020].
12. Ahmed F., Kalita K., Nemade H.B., "Torque and controllable radial force production in a single winding bearingless switched reluctance motor with a speed controlled drive operation", International Transactions on Electrical Energy Systems , vol.30, issue 5 , (DOI - 10.1002/2050-7038.12312) [2020].
13. Roy A., Nemade H.B., Bhattacharjee R., "Multiuser PSK-Chirp-BOK Communication System under Co-Channel Interference", IEEE Transactions on Circuits and Systems II: Express Briefs , vol.67, issue 3 , (DOI - 10.1109/TCSII.2019.2914056) ,pp.465-469, [2020].
14. Roy N., Mitra S., Das N.M., Mandal N., Bandyopadhyay D., Nemade H.B., Mandal T.K., "Paper Based Enzymatic Chemiresistor for POC Detection of Ethanol in Human Breath", IEEE Sensors Journal , vol.20, issue 5 , (DOI - 10.1109/JSEN.2019.2952940) ,pp.2278-2286, [2020].
15. Biswas M., Majhi S., Nemade H., "Performance of a coupled inductor for interleaved buck converter with improved step-down conversion ratio", IET Power Electronics , (DOI - 10.1049/pel2.12029) [2020].
16. Biswas M., Majhi S., Nemade H., "Two-phase high efficiency interleaved buck converter with improved step-down conversion ratio and low voltage stress", IET Power Electronics , vol.12, issue 15 , (DOI - 10.1049/iet-pel.2019.0547) ,pp.3942-3952, [2019].
17. Trivedi S., Nemade H.B., "ZnO nanorod-based Love wave delay line for high mass sensitivity: A finite element analysis", IET Science, Measurement and Technology , vol.13, issue 9 , (DOI - 10.1049/iet-smt.2018.5239) ,pp.1245-1253, [2019].
18. Hazarika J., Mohd T.K., Ahamed S.R., Nemade H.B., "Energy efficient VLSI architecture of real-valued serial pipelined FFT", IET Computers and Digital Techniques , vol.13, issue 6 , (DOI - 10.1049/iet-cdt.2019.0025) ,pp.461-469, [2019].
19. Roy A., Nemade H.B., Bhattacharjee R., "Symmetry Chirp Modulation Waveform Design for LEO Satellite IoT Communication", IEEE Communications Letters , vol.23, issue 10 , (DOI - 10.1109/LCOMM.2019.2933211) ,pp.1836-1839, [2019].
20. Palsaniya S., Nemade H.B., Dasmahapatra A.K., "Graphene based PANI/MnO2 nanocomposites with enhanced dielectric properties for high energy density materials", Carbon , vol.150 , (DOI - 10.1016/j.carbon.2019.05.006) ,pp.179-190, [2019].
21. Saikia J., Pandey G., Sasidharan S., Antony F., Nemade H.B., Kumar S., Chaudhary N., Ramakrishnan V., "Electric Field Disruption of Amyloid Aggregation: Potential Noninvasive Therapy for Alzheimer's Disease", ACS Chemical Neuroscience , vol.10, issue 5 , (DOI - 10.1021/acschemneuro.8b00490) ,pp.2250-2262, [2019].
22. Palsaniya S., Nemade H.B., Dasmahapatra A.K., "Mixed Surfactant-Mediated Synthesis of Hierarchical PANI Nanorods for an Enzymatic Glucose Biosensor", ACS Applied Polymer Materials , vol.1, issue 4 , (DOI - 10.1021/acsapm.8b00103) ,pp.647-656, [2019].
23. Lukose V., Nemade H.B., "Finite element simulation of one-port surface acoustic wave resonator with thick interdigital transducer for gas sensing", Microsystem Technologies , vol.25, issue 2 , (DOI - 10.1007/s00542-018-4015-y) ,pp.441-446, [2019].
24. Behera B., Nemade H.B., "Investigating translational motion of a dual friction-drive surface acoustic wave motor through modeling and finite element simulation", Simulation , vol.95, issue 2 , (DOI - 10.1177/0037549718778770) ,pp.117-125, [2019].
25. Palsaniya S., Nemade H.B., Dasmahapatra A.K., "Heterostructured Layer Growth of Polyaniline by Vacuum Thermal Evaporation and Fabrication of Thin-Film Capacitors", Journal of Physical Chemistry C , (DOI - 10.1021/acs.jpcc.9b09000) [2019].
26. Pandey G., Morla S., Nemade H.B., Kumar S., Ramakrishnan V., "Modulation of aggregation with an electric field; Scientific roadmap for a potential non-invasive therapy against tauopathies", RSC Advances , vol.9, issue 9 , (DOI - 10.1039/c8ra09993f) ,pp.4744-4750, [2019].
27. Trivedi S., Nemade H.B., "Coupled resonance in SH-SAW resonator with S1813 micro-ridges for high mass sensitivity biosensing applications", Sensors and Actuators, B: Chemical , vol.273 , (DOI - 10.1016/j.snb.2018.06.040) ,pp.288-297, [2018].
28. Behera B., Nemade H.B., "Dual friction-drive SAW motor utilizing cylindrical shaft as external load driver", Ferroelectrics, Letters Section , vol.45, issue 3-Jan , (DOI - 10.1080/07315171.2018.1499359) ,pp.8-13, [2018].
29. Palsaniya S., Nemade H.B., Dasmahapatra A.K., "Synthesis of polyaniline/graphene/MoS2 nanocomposite for high performance supercapacitor electrode", Polymer , vol.150 , (DOI - 10.1016/j.polymer.2018.07.018) ,pp.150-158, [2018].
30. Trivedi S., Nemade H.B., "Finite element simulation of a highly sensitive SH-SAW delay line sensor with SiO 2 micro-ridges", Microsystem Technologies , vol.24, issue 8 , (DOI - 10.1007/s00542-018-3772-y) ,pp.3537-3547, [2018].
31. Trivedi S., Nemade H.B., "Simulation of a Love wave device with ZnO nanorods for high mass sensitivity", Ultrasonics , vol.84 , (DOI - 10.1016/j.ultras.2017.10.004) ,pp.150-161, [2018].
32. Kumar J., Nemade H.B., Giri P.K., "Adsorption of Small Molecules on Niobium Doped Graphene: A Study Based on Density Functional Theory", IEEE Electron Device Letters , vol.39, issue 2 , (DOI - 10.1109/LED.2017.2787203) ,pp.296-299, [2018].
33. Pandey G., Saikia J., Sasidharan S., Joshi D.C., Thota S., Nemade H.B., Chaudhary N., Ramakrishnan V., "Modulation of peptide based nano-assemblies with electric and magnetic fields", Scientific Reports , vol.7, issue 1 , (DOI - 10.1038/s41598-017-02609-z) [2017].
34. Roy A., Nemade H.B., Bhattacharjee R., Kushwah V., "DQPSK modulation and demodulation using SAW device", IET Communications , vol.11, issue 17 , (DOI - 10.1049/iet-com.2017.0821) ,pp.2630-2636, [2017].
35. Bhattacharjee M., Nemade H.B., Bandyopadhyay D., "Nano-enabled paper humidity sensor for mobile based point-of-care lung function monitoring", Biosensors and Bioelectronics , vol.94 , (DOI - 10.1016/j.bios.2017.03.049) ,pp.544-551, [2017].
36. Kumar J., Nemade H.B., Giri P.K., "Density functional theory investigation of negative differential resistance and efficient spin filtering in niobium-doped armchair graphene nanoribbons", Physical Chemistry Chemical Physics , vol.19, issue 43 , (DOI - 10.1039/c7cp05921c) ,pp.29685-29692, [2017].
37. Bhattacharjee M., Pasumarthi V., Chaudhuri J., Singh A.K., Nemade H., Bandyopadhyay D., "Self-spinning nanoparticle laden microdroplets for sensing and energy harvesting", Nanoscale , vol.8, issue 11 , (DOI - 10.1039/c6nr00217j) ,pp.6118-6128, [2016].
38. Sai Krishna Santosh G., Nemade H.B., "Investigation of properties of surface acoustic waves generated by periodically patterned ZnO on silicon substrate", Ultrasonics , vol.59 , (DOI - 10.1016/j.ultras.2015.01.008) ,pp.40-44, [2015].
39. Ramakrishnan N., Nemade H.B., Palathinkal R.P., "Resonant frequency characteristics of a SAW device attached to resonating micropillars", Sensors , vol.12, issue 4 , (DOI - 10.3390/s120403789) ,pp.3789-3797, [2012].
40. Ramakrishnan N., Nemade H.B., Palathinkal R.P., "Mass loading in coupled resonators consisting of SU-8 micropillars fabricated over SAW devices", IEEE Sensors Journal , vol.11, issue 2 , (DOI - 10.1109/JSEN.2010.2074193) ,pp.430-431, [2011].
41. Ramakrishnan N., Nemade H.B., Palathinkal R.P., "Finite element method simulation of a surface acoustic wave hydrogen sensor with palladium nano-pillars as sensing medium", Sensor Letters , vol.8, issue 6 , (DOI - 10.1166/sl.2010.1352) ,pp.824-828, [2010].
42. Ramakrishnan N., Palathinkal R.P., Nemade H.B., "Mass loading effect of high aspect ratio structures grown over surface acoustic wave resonators", Sensor Letters , vol.8, issue 2 , (DOI - 10.1166/sl.2010.1258) ,pp.253-257, [2010].
43. Dhillon H.S., Singhal H., Nemade H.B., "Respiration-movement-based sleep apnea monitor", Electronics Letters , vol.44, issue 6 , (DOI - 10.1049/el:20083120) ,pp.398-400, [2008].
1. Ranjan G., Tiwari R., Nemade H.B., "Experimental Identification of Residual Unbalances for Two-Plane Balancing in a Rigid Rotor System Integrated with AMB", Lecture Notes in Mechanical Engineering , (DOI - 10.1007/978-981-16-0550-5_69) ,pp.697-709, [2022].
2. Biswas M., Majhi S., Nemade H., "Ripple improvement and steady state analysis of a boost converter with higher step-up ratio", IET Conference Publications , vol.2020, issue CP766 , (DOI - 10.1049/icp.2021.0976) ,pp.978-983, [2020].
3. Hazarika J., Khan M.T., Ahamed S.R., Nemade H.B., "An area and power-efficient serial commutator fft with recursive lut multiplier", Lecture Notes in Electrical Engineering , vol.659 , (DOI - 10.1007/978-981-15-4775-1_11) ,pp.92-100, [2020].
4. Biswas M., Majhi S., Nemade H., "A Larger Step-down Ratio Buck Converter with Reduced Ripple in Input Current and Output Voltage", 2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy, PESGRE 2020 , (DOI - 10.1109/PESGRE45664.2020.9070578) [2020].
5. Roy A., Nemade H.B., Bhattacharjee R., "A Chirp Communication System Using SAW-Chirp Devices for Multibit Symbol Transmission", IEEE Region 10 Annual International Conference, Proceedings/TENCON , vol.2019-October , (DOI - 10.1109/TENCON.2019.8929438) ,pp.1466-1471, [2019].
6. Santosh Gollapudi S.K., Nemade H.B., "Design and Fabrication of SAW Resonators on Silicon Substrate Employing Transverse BAW in Patterned ZnO", IEEE International Ultrasonics Symposium, IUS , vol.2019-October , (DOI - 10.1109/ULTSYM.2019.8925645) ,pp.695-698, [2019].
7. Hazarika J., Khan M.T., Ahamed S.R., Nemade H.B., "High performance multiplierless serial pipelined VLSI architecture for real-valued FFT", 25th National Conference on Communications, NCC 2019 , (DOI - 10.1109/NCC.2019.8732236) [2019].
8. Roy A., Deb D., Nemade H.B., Bhattacharjee R., "Design of discrete frequency-coding waveforms using phase-coded linear chirp for multiuser and MIMO radar systems", 25th National Conference on Communications, NCC 2019 , (DOI - 10.1109/NCC.2019.8732263) [2019].
9. Roy A., Sen S., Nemade H.B., Bhattachariee R., "Multiuser Communication Using Chirp Signals of Equal Chirp Rate", 2018 24th National Conference on Communications, NCC 2018 , (DOI - 10.1109/NCC.2018.8599902) [2019].
10. Palsaniya S., Nemade H.B., Dasmahapatra A.K., "Size dependent triboelectric nanogenerator and effect of temperature", 2018 3rd International Conference on Microwave and Photonics, ICMAP 2018 , vol.2018-January , (DOI - 10.1109/ICMAP.2018.8354615) ,pp.1-2, [2018].
11. Gugulothu S., Kumar G., Nemade H.B., Trivedi G., "Design of a FEM based simulator for MEMS devices", IEEE Region 10 Annual International Conference, Proceedings/TENCON , vol.2017-December , (DOI - 10.1109/TENCON.2017.8228127) ,pp.1670-1675, [2017].
12. Gugulothu S., Kumar G., Kundu S., Nemade H.B., Trivedi G., "Design of a next generation framework for MEMS devices", Proceedings of 2nd International Conference on 2017 Devices for Integrated Circuit, DevIC 2017 , (DOI - 10.1109/DEVIC.2017.8074010) ,pp.546-550, [2017].
13. Gollapudi S.K.S., Nemade H.B., "Edge reflection type SAW resonators on silicon substrate using ZnO thin films", IEEE International Ultrasonics Symposium, IUS , (DOI - 10.1109/ULTSYM.2017.8092890) [2017].
14. Gollapudi S.K., Nemade H.B., "Edge reflection type SAW resonators on silicon substrate using ZnO thin films", IEEE International Ultrasonics Symposium, IUS , (DOI - 10.1109/ULTSYM.2017.8091530) [2017].
15. Roy A., Nemade H.B., Bhattacharjee R., "Performance of multiuser communication system using phase coded linear chirp modulation", 2017 23rd National Conference on Communications, NCC 2017 , (DOI - 10.1109/NCC.2017.8077099) [2017].
16. Roy A., Nemade H.B., Bhattacharjee R., "Phase coded nonlinear chirp modulation in multiuser communication systems", Proceedings of 2017 International Conference on Innovations in Electronics, Signal Processing and Communication, IESC 2017 , (DOI - 10.1109/IESPC.2017.8071871) ,pp.89-94, [2017].
17. Bhattacharjee M., Pasumarthi V., Chaudhuri J., Singh A.K., Nemade H., Bandyopadhyay D., "Organic vapour detection with nanoparticle suspended salt solution droplet and the effect of viscosity and vapour-source distance", 2016 3rd International Conference on Emerging Electronics, ICEE 2016 , (DOI - 10.1109/ICEmElec.2016.8074611) [2017].
18. Prasad Gedela R.B., Nemade H.B., Bhattacharjee R., "BER analysis of communication systems employing orthogonal frequency coding in surface acoustic wave (SAW) correlators", Proceedings on 2016 2nd International Conference on Next Generation Computing Technologies, NGCT 2016 , (DOI - 10.1109/NGCT.2016.7877443) ,pp.368-372, [2017].
19. Bhattacharjee M., Pasumarthi V., Chaudhuri J., Singh A.K., Nemade H., Bandyopadhyay D., "Detection of organic vapours employing droplets having nanoparticles", 2016 IEEE Students' Technology Symposium, TechSym 2016 , (DOI - 10.1109/TechSym.2016.7872665) ,pp.110-113, [2017].
20. Trivedi S., Nemade H.B., "Highly Sensitive SH-SAW Resonator with SiO2 trenches for Biosensing Application", Materials Today: Proceedings , vol.4, issue 9 , (DOI - 10.1016/j.matpr.2017.06.393) ,pp.10427-10431, [2017].
21. Behera B., Nemade H.B., "Finite Element Simulation of a SAW Motor based on Dual Friction-Drive", Materials Today: Proceedings , vol.4, issue 9 , (DOI - 10.1016/j.matpr.2017.06.429) ,pp.10612-10616, [2017].
22. Bhattacharjee M., Nemade H., Bandyopadhyay D., "Effect of oxide barrier height in spin dependent tunneling in MTJ of FeO-MgO multilayer structure", Journal of Physics: Conference Series , vol.759, issue 1 , (DOI - 10.1088/1742-6596/759/1/012051) [2016].
23. Behera B., Nemade H.B., Trivedi S., "Modelling and finite element simulation of a dual friction-drive SAW motor using flat slider", IEEE International Ultrasonics Symposium, IUS , vol.2016-November , (DOI - 10.1109/ULTSYM.2016.7728378) [2016].
24. Roy A., Nemade H.B., Bhattacharjee R., "BER performance of communication systems using SAW correlators encoded with Walsh and Gold codes", 2016 22nd National Conference on Communication, NCC 2016 , (DOI - 10.1109/NCC.2016.7561101) [2016].
25. Maitra M., Nemade H.B., "Simulation of Longitudinal Mode of Vibration in Piezoelectric Monolayer MoS2", Procedia Engineering , vol.144 , (DOI - 10.1016/j.proeng.2016.05.066) ,pp.682-688, [2016].
26. Behera B., Nemade H.B., "Modelling and Finite Element Simulation of a Surface Acoustic Wave Driven Linear Motor", Procedia Engineering , vol.144 , (DOI - 10.1016/j.proeng.2016.05.172) ,pp.1411-1418, [2016].
27. Kundu S., Nemade H.B., "Modeling and Simulation of a Piezoelectric Vibration Energy Harvester", Procedia Engineering , vol.144 , (DOI - 10.1016/j.proeng.2016.05.043) ,pp.568-575, [2016].
28. Roy A., Nemade H.B., Bhattacharjee R., "Analysis of SAW correlator based communication systems employing binary encoded orthogonal frequency coding", 2014 20th National Conference on Communications, NCC 2014 , (DOI - 10.1109/NCC.2014.6811302) [2014].
29. Ramakrishnan N., Nemade H.B., Palathinkal R.P., "Fem simulation study on mass loading sensitivity of high aspect ratio nano-pillar sensing medium in saw sensors", Springer Proceedings in Physics , vol.143 , (DOI - 10.1007/978-3-642-34216-5_52) ,pp.531-538, [2013].
30. Namdeo A.K., Nemade H.B., "Simulation on effects of electrical loading due to interdigital transducers in surface acoustic wave resonator", Procedia Engineering , vol.64 , (DOI - 10.1016/j.proeng.2013.09.104) ,pp.322-330, [2013].
31. Zaheer M., Suri J.S., Nemade H.B., "Primary side control based inductively coupled powering scheme for biomedical implants", Proceedings - IEEE-EMBS International Conference on Biomedical and Health Informatics: Global Grand Challenge of Health Informatics, BHI 2012 , (DOI - 10.1109/BHI.2012.6211538) ,pp.174-179, [2012].
32. Ramakrishnan N., Namdeo A.K., Nemade H.B., Palathinkal R.P., "Simplified model for FEM simulation of SAW delay line sensor", Procedia Engineering , vol.41 , (DOI - 10.1016/j.proeng.2012.07.278) ,pp.1022-1027, [2012].
33. Ramakrishnan N., Nemade H.B., Palathinkal R.P., "Investigation on resonance effects of closely resonating nano-pillars attached to SAW resonator", Advanced Materials Research , vol.403-408 , (DOI - 10.4028/www.scientific.net/AMR.403-408.1183) ,pp.1183-1187, [2012].
34. Ramakrishnan N., Nemade H.B., Palathinkal R.P., "Fabrication of high aspect ratio SU-8 microstructures on piezoelectric transducers", Applied Mechanics and Materials , vol.110-116 , (DOI - 10.4028/www.scientific.net/AMM.110-116.3127) ,pp.3127-3131, [2012].
35. Ramakrishnan N., Vamsi T., Khan A., Nemade H.B., Palathinkal R.P., "Humidity sensor using NIPAAm nanogel as sensing medium in saw devices", International Journal of Nanoscience , vol.10, issue 2-Jan , (DOI - 10.1142/S0219581X11007880) ,pp.259-262, [2011].
36. Naik M.V., Mahanta A., Bhattacharjee R., Nemade H.B., "An Automatic Blind Modulation Recognition Algorithm for M-PSK Signals Based on MSE Criterion", Communications in Computer and Information Science , vol.3 CCIS , (DOI - 10.1007/978-3-540-75993-5_22) ,pp.257-266, [2007].
37. Naik M.V., Bhattacharjee R., Mahanta A., Nemade H.B., "Blind adaptive recognition of different QPSK modulated signals for software defined radio applications", First International Conference on Communication System Software and Middleware, Comsware 2006 , vol.2006 [2006].
38. Venkataramanan S., Prabhat P., Choudhury S.R., Nemade H.B., Sahambi J.S., "Biomedical instrumentation based on Electrooculogram (EOG) signal processing and application to a hospital alarm system", Proceedings - 2005 International Conference on Intelligent Sensing and Information Processing, ICISIP'05 , vol.2005 , (DOI - 10.1109/ICISIP.2005.1529512) ,pp.535-540, [2005].
Department of Electronics and Electrical Engineering Indian Institute of Technology Guwahati Guwahati, Assam, India.PIN-781 039. Email: eeeoff@iitg.ac.in Telehone: +91-361-2582550 Fax: +91-361-2582542 +91-361-2690762
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