CONFERENCE PROCEEDINGS, SYMPOSIA AND SEMINARS24. INDUSTRIAL R&D REPORTS/ PATENTS/BOOKS/BOOK CHAPTERS/PUBLICATIONS/CONFERENCES

1.      Monthly Reports inside R&D more than 60 Nos. at Central R&D Laboratory, Atsugi, Showa Shell Sekiyu K.K., Kanagawa-ken, Japan (1988-1993).

2.      Weekly Report inside R&D more than 75 Nos. at R&D Centre Gharda Chemicals Ltd., Dombivali, Mumbai.

3.      Monthly/Quarterly Report Inside R&D more than 20 Nos. at R&D Centre Gharda Chemicals Ltd. Dombivali, Mumbai.

 PATENTS

1.      Kulshreshtha, A., Negi, Y.S., Rajkumar, Innovative Design for Pharmaceutical Liquid Bottle Packaging to Unit Dose Packaging System, Application No: 289190- 09/12/2016

2.      Negi, Y.S., Upadhyaya, J.S., Kumar, S., Preparation of corn cob based nanoparticles. Indian Patent Application No. 1937/DEL/2010.

3.      Negi, Y.S., Shanthi, C.V., Development of Non-linear optically Active Free standing films based on m-NA Doped PES System for Frequency Doubling Applications. Ind. Pat. Appl. No. 1084/DEL/ (2009).

4.      Negi, Y.S., Shanthi, C.V.,  Development of Non-linear optically Active Free Standing Films based on 2-Methyl-NA Doped PES System for Frequency Doubling  Applications. Ind. Pat. Appl. No. 1083/DEL/ (2009).

5.      Aihara, Y., Isozaki, T., Mogamiya, H., Negi, Y.S., Ohode, T., Liquid Crystal Orientation Controlling Membranes and Liquid Crystal Elements Using the Same, US Patent No. 5,436,037 T (1995).

6.      Negi, Y.S., Antifog Coating, Ind. Pat. Appl. No. 2158/Del/95 (1995).

7.      Negi, Y.S., Water– Repel Coating. Ind. Pat. Appl. No. 2159/Del/95 (1995).

8.      Okabe, N., Negi, Y.S., Kawamura, I., Ohode, T., Yamamoto, N., Yamada, Y., Orientation-Controlling Membranes and Liquid crystal Elements using them. Eur. Pat. Appl., EP 539245 A1 (1993).

9.      Ohode, Y., Negi, Y.S., Suzuki, Y., Kawamura, I., Yamamoto, N., Yamada, Y., Polyimide, Polyamide-imide, Polyamide- Liquid Crystal Orienting Film and Display Using Same; Jpn Kokai Tokkyo Koho, JP 04-055495 A2 (1992).

10.   Okabe, N., Negi, Y.S., Kawamura, I., Ohode, T., Yamamoto, N., Yamada, Y., US Patent No. 5,328,641 (1992).

11.   Aihara, Y., Isozaki, T., Negi, Y.S., Ohode, T., Liquid Crystal Compounds, Jpn. Kokai Tokkyo Koho, JP- 3-197445 (1991).

12.   Negi, Y.S., Suzuki, Y., Kawamura, I., Imai, Y., Yamamoto, N., Yamada, Y., Mori, K., Nakamura, K., Ferroelectric Liquid Crystal Elements, Eur. Pat. Appl., EP 409194 A1 (1991).

13.   Suzuki, Y., Yamakawa, N., Aihara, Y., Mogamiya, H., Ohode, T., Isozaki, T., Negi, Y.S., Shiegenori, S., Liquid Crystal Compounds, Eur. Pat. Appl., EP 422996 A2 (1991).

14.   Ohode, T., Negi, Y.S., Suzuki, Y., Kawamura, I., Yamamoto, N., Yamada, Y., Liquid Crystal Alignment Films and Liquid Crystal Elements,  Jpn Kokai Tokkyo Koho, JP 2-165349 (1990).

15.   Negi, Y.S., Suzuki, Y., Kawamura, I., Imai, Y., Yamamoto, N., Yamada, Y., Mori, K., Nakamura, K., Ferroelectric Liquid Crystal Elements, US Pat. S67-61334 CIMT, (1990).

16.   Yamamoto, N., Yamada, Y., Mori, K., Nakamura, K., Negi, Y.S., Suzuki, Y., Kawamura, I., Imai, Y. Ferroelectric Liquid Crystal Devices, Jpn Kokai Tokkyo Koho, JP-1-185793 (1989).

17.   Yamamoto, N., Yamada, Y., Mori, K., Nakamura, K., Negi, Y.S., Ferroelectric Liquid Crystal Devices, Jpn Kokai Tokkyo Koho JP 1-340474 (1989).

18.   Souma, Y., Negi, Y.S., Synthesis of 4,4-Dichlorodiphenyl Sulfone Compounds, Jpn Kokai Tokkyo Koho, JP-63129596 (1988).

19.   Imai, Y., Kakimoto, M., Negi, Y.S., Tetraphenylthiophene Dicarboxylic Acid Derivatives,  Jpn. Kokai Tokkyo Koho, JP- 6106, 3672 (1986).

20.   Imai, Y., Kakimoto, M., Negi, Y.S.,  Aromatic Polyamide-esters, Jpn. Kokai Tokkyo Koho, JP- 61207435 (1986).

21.   Imai, Y., Kakimoto, M., Negi, Y.S., Polyesters Containing Tetraphenylthiophene Group, Jpn. Kokai Tokkyo Koho, JP-61207430 (1986).

22.   Imai, Y., Kakimoto, M., Negi, Y.S., Polyamide Resins, Jpn. Kokai Tokkyo Koho. JP-610625523 (1986).

BOOKS

1. Biopolymers for Targeted Drug Delivery Systems" (ISBN 978-3-659-39340-2) LAP LAMBERT Academic Publishing (Germany).
2. PEEK Based Composites, LAP LAMBERT Academic Publishing (Germany).

BOOK CHAPTERS

1. Maharana, T.,  Sutar, A.K., Routaray, A., Nath, N., Negi, Y.S., Application of PEEK as a biomaterial; Book Chapter in Encyclopedia entitled  "Biomedical Polymers and Polymeric Biomaterials" [ISBN: 1439898790, 1439898796] Taylor and Francis, USA; 2014.
2. Maharana, T.,  Sutar, A.K., Nath, N., Routaray, A., Negi Y.S., Mohanty, B., Application of PEEK as a fuel cell membrane; Book Chapter in Advanced Materials Series; Wiley-Scrivener, USA; 2014.

3.      Deeba, F., Pruthi, V., Negi, Y.S., Polymer as catalyst for transesterification in biodiesel production. In book Encyclopedia of Polymer Applications, Taylor & Francis Encyclopedia Program, Editor: Dr. Munmaya Mishra, 2017.

4.      Kumar, B., Negi, Y.S., Environment friendly superabsorbent functional polymers in agriculture. In book Encyclopedia of Polymer Applications, Taylor & Francis Encyclopedia Program, Editor: Dr. Munmaya Mishra, 2017.

5.      Sauraj, Negi, Y.S., Stimuli-responsive polymeric prodrugs for cancer treatment. In book Encyclopedia of Polymer Applications, Taylor & Francis Encyclopedia Program, Editor: Dr. Munmaya Mishra, 2017.

6.      Priyadarshi, R., Negi, Y.S., Chitosan: A revolutionary material in biodegradable food packaging. In book Encyclopedia of Polymer Applications, Taylor & Francis Encyclopedia Program, Editor: Dr. Munmaya Mishra,  2017 .

7.      Priyadarshi, R. Negi, Y.S., Natural and synthetic biopolymers for contemporary food packaging applications. In book Encyclopedia of Polymer Applications, Taylor & Francis Encyclopedia Program, Editor: Dr. Munmaya Mishra, 2017.

8.      Bano, S., Negi, Y.S., Polymeric membrane in fuel cell. In book Encyclopedia of Polymer Applications, Taylor & Francis Encyclopedia Program, Editor: Dr. Munmaya Mishra, 2017.

9. Deeba, F., Pruthi, V., Negi, Y.S., Effect of emerging contaminants from Paper mill industry into the environment and their control. In book ENVIRONMENTAL CONTAMINANTS: MEASUREMENT, MODELLING AND CONTROL (springer). Editor(s) name(s): Tarun Gupta, Avinash K Agarwal, Rashmi A Agarwal, and Nitin Labhsetwar. ISBN: 978-981-10-7331-1, Book ID : 454476_1_En, Chapter No : 17, Page no. 395-412, 2017.
10.  Agrawal, G., Negi, Y.S., Pradhan, S., Dash, M., Samal, S. K., Wettability and Contact Angle of Polymeric Biomaterials, Maria Cristina Tanzi and Silvia Farè Ed., Woodhead publishing, Elsevier, United Kingdom, ISBN: 9780081007372, 2017.

RESEARCH PUBLICATIONS

1.      Priyadarshi, R., Sauraj, Kumar, B., Deeba, F., Kulshreshtha, A., Negi, Y.S., Chitosan films incorporated with apricot (Prunus armeniaca) kernel essential oil as active food packaging material. Food Hydrocolloids. 85(2018) 158. https://doi.org/10.1016/j.foodhyd.2018.07.003

2.      Priyadarshi, R., Sauraj, Kumar, B., Negi, Y.S., Chitosan films incorporated with citric acid and glycerol as an active packaging material for extension of green chilli shelf life. Carbohydrate Polymers. 195(2018) 329. https://doi.org/10.1016/j.carbpol.2018.04.089

3.      Sauraj, Priyadarshi, R., Kumar, S.U., Kumar, V., Gopinath, P., Negi, Y.S., pH responsive prodrug nanoparticles based on xylan-curcumin conjugate for the efficient delivery of curcumin in cancer therapy. Carbohydrate Polymers. 188(2018) 252. https://doi.org/10.1016/j.carbpol.2018.02.006.

4.      Kumar, B., Negi, Y.S., Water absorption and viscosity behaviour of thermally stable novel graft polymer of carboxymethyl cellulose and poly(sodium 1-hydroxy acrylate). Carbohydrate Polymers. 181(2017) 862. https://doi.org/10.1016/j.carbpol.2017.11.066

5.      Deeba F., Patel, A., Arora, N., Pruthi, V., Pruthi, P.A., Negi, Y.S., Amaranth seeds (Amaranthus palmeri L.) as novel feedstock for biodiesel production by oleaginous yeast. Environ Sci Pollut Res. 25(1)(2017) 353. https://doi.org/10.1007/s11356-017-0444-x

6.      Kumar B., Negi Y.S., Synthesis, properties and thermal stability of water soluble poly(potassium 1-hydroxy acrylate-co-styrene) copolymer. Polymer International. 80(2017) 159. DOI: 10.1002/pi.5484

7.      Deeba F., Pruthi, V., Negi, Y.S., Fostering tricylglycerols accumulation in novel oleaginous yeast Cryptococcus psychrotolerans IITRFD utilizing groundnut shell for improved biodiesel production. Bioresource Technology. 242(2017) 113. https://doi.org/10.1016/j.biortech.2017.04.001.2017

8.      Kulshreshta, A., Negi, Y.S., Innovative and Sustainable Design for Improving the Hygiene in Pharmaceutical Liquid Packaging; American J. of Pharmacy and Health Research. 5(4)(2017) 43.

9.      Bano, S., Negi, Y.S., Studies on cellulose nano crystals isolated from groundnut shells. Carbohydrate Polymers. 157(2017) 1041. 

10.   Sauraj, Kumar, S.U., Gopinath, P., Negi, Y.S., Synthesis and bio-evaluation of xylan-5-fluorouracil-1-acetic acid conjugates as prodrugs for colon cancer treatment. Carbohydrate Polymers. 157(2017) 1442.

11.   Kumar, A., Negi, Y.S., Choudhary, V., Bhardwaj, N.K., Han, S.S., Morphological, mechanical, and in vitro cytocompatibility analysis of poly(vinyl alcohol)–silica glass hybrid scaffolds reinforced with cellulose nanocrystals. International Journal of Polymer Analysis and Characterization. 22(2)(2016) 139.

12.   Deeba, F., Pruthi, V., Negi, Y.S., Converting paper mill sludge into neutral lipids by oleaginous yeast Cryptococcus vishniaccii for biodiesel production. Bioresource Technology. 213(2016) 96. http://dx.doi.org/10.1016/j.biortech.2016.02.105.

13.   Priyadarshi, R., Negi, Y.S., Effect of Varying Filler Concentration on Zinc Oxide Nanoparticle Embedded Chitosan Films as Potential Food Packaging Material. Journal of Polymers and the Environment. 25(4)(2017) 1087. https://doi.org/10.1007/s10924-016-0890-4

14.   Mittal, P., Negi, Y. S., Singh, R. K., A Depth Analysis for Different Structures of Organic Thin Film Transistors: Modeling of Performance Limiting Issues. Microelectronics Engineering. 150(2016) 7.

15.   Kumar, A., Negi, Y. S., Choudhary, V., Bhardwaj, N. K., Fabrication of poly (vinyl alcohol)/ovalbumin/ cellulose nanocrystals/nanohydroxyapatite based biocomposite scaffolds. International Journal of Polymeric Materials and Polymeric Biomaterials. 65(4)(2016) 191. DOI:10.1080/00914037.2015.1099102.

16.   Kumar, B., Negi, Y.S., Synthesis and characterization of poly (potassium 1-hydroxy acrylate) and its derivatives by using different efficient catalysts. Polymer. 80(2015) 159.

17.   Mittal, P., Negi, Y. S., Singh, R. K., Mapping of Performance Limiting Issues to Analyze Top and Bottom Contact Organic Thin Film Transistors. Journal of Computational Electronics. 14(2015) 360.

18.   Tyagi, R., Pant, M., Negi, Y. S., Ali, M., Optimization of the Electrical Performance of Polymeric Films. Materials and Manufacturing Processes. 30(4)(2015) 464.

19.   Tyagi, R., Pant, M., Negi, Y. S., Optimizing the performance of electrically poled polymeric films. Computer Methods in Materials Science. 15(1)(2015) 127.

20.   Mittal, P., Negi, Y.S., Singh, R.K., An Analytical Approach for Parameter Extraction in Linear and Saturation Regions of Top and Bottom Contact Organic Transistors. Journal of Computational Electronics. 14(3)(2015) 828.

21.   Kumar, B., Kaushik, B. K., Negi, Y. S., Goswami, V., Single and dual gate OTFT based robust organic digital design. Microelectronics Reliability. 54(1)(2014) 100.

22.   Kumar, B., Kaushik, B. K., Negi, Y. S., Analysis of electrical parameters of organic thin film transistors based on thickness variation in semi-conducting and dielectric layers. IET Circuits, Devices & Systems. 8(2)(2014) 131.

23.   Kumar, S., Negi, Y. S., Cellulose and Xylan–Based Prodrug of Diclofenac Sodium: Synthesis, Physicochemical Characterization and in-Vitro Release. International Journal of Polymeric Materials and Polymeric Biomaterials. 63(6)(2014) 283.

24.   Kumar, B., Kaushik, B. K., Negi, Y. S., Organic Thin Film Transistors: Structures, Models, Materials, Fabrication, and Applications: A Review. Polymer Reviews. 54(1)(2014) 33.

25.   Kumar, A., Negi, Y. S., Choudhary, V., Bhardwaj, N. K., Characterization of Cellulose Nanocrystals Produced by Acid-Hydrolysis from Sugarcane Bagasse as Agro-Waste. Journal of Materials Physics and Chemistry. 2(1)(2014) 1.

26.   Tyagi, R., Negi, Y. S., Pant, M., Performance of Poled Organic Polymeric Films by ANOVA in Terms of SHG Conversion Efficiency. Proceedings of the Third International Conference on Soft Computing for Problem Solving. (2014) 823.

27.   Kumar, B., Kaushik, B. K., Negi, Y.S., Modeling of top and bottom contact structure organic field effect transistors. J. Vac. Sci. Technol. B. 31(1)(2013).

28.   Kumar, B., Kaushik, B. K., Negi, Y.S., Influence of the Contact Thickness on Electrical Performance of Staggered and Planer p-Channel Organic Field Effect Transistors. Adv. Mater. Res. (2013) 622.

29.   Mittal, P., Kumar, B., Kaushik, B. K., Negi, Y.S., Singh, R.K., Channel length variation effect on performance parameters of organic field effect transistors. Microelectron. J. 43(12)(2012) 985.

30.   Kumar, B., Kaushik, B. K., Negi, Y.S., Analysis of Electrode Thickness Variation Effect on Performance Parameters of Polymer Thin Film Transistor with Device Simulation. International Journal of Advanced Intelligence Paradigms (IJAIP). (2013).

31.   Kumar, B., Kaushik, B. K., Negi, Y.S., Static and Dynamic Analysis of Organic and Hybrid Inverter Circuits. J. Comput. Electron. (JCEL). (2013). DOI 10.1007/s10825-013-0476-5

32.   Kumar, B., Kaushik, B. K., Negi, Y.S., Saxena, S., Varma, G.D., Analytical modeling and parameter extraction of top and bottom contact structures of organic thin film transistors. Microelectronics J. (2013), http://dx.doi.org/10.1016/j.mejo.2013.06.004

33.   Goswami, V., Kumar, B., Kaushik, B.K., Yadav, K.L., Negi, Y.S., Analysis of Static and Dynamic Performance of Organic Inverter Circuits based on Dual and Single Gate OTFTs. IET Circuits, Devices & Systems. (2013) 7. DOI: 10.1049/iet-cds.2013.0044

34.   Kumar, A., Negi, Y. S., Bhardwaj, N. K., Choudhary, V., Synthesis and characterization of cellulose nanocrystals/PVA based bionanocomposite. Advanced Materials Letters. 4(8)(2013) 626.

35.   Shukla, D., Negi, Y. S., Kumar, V., Modification of Poly (ether ether ketone) Polymer for Fuel Cell Application. Journal of Applied Chemistry (2013) 1.

36.   Kumar, B., Kaushik, B. K., Negi, Y. S., Analysis of electrode thickness variation on performance parameters of polymer thin film transistors using device simulation. International Journal of Advanced Intelligence Paradigms. 5(1)(2013) 3.

37.   Goswami, V., Kumar, B., Kaushik, B. K., Yadav, K. L., Negi, Y. S., Analysis of static and dynamic performance of organic inverter circuits based on dual and single gate organic thin film transistors. IET Circuits, Devices & Systems. 7(6)(2013) 345.

38.   Kumar, S., Negi, Y. S., Corn Cob Xylan-based Nanoparticles: Ester Prodrug of 5-Aminosalicylic Acid for Possible Targeted Delivery of Drug; Journal of Pharmaceutical Sciences and Research. 4(12)(2012) 1995.

39.   Kumar, A., Negi, Y. S., Bhardwaj, N. K., Choudhary, V., Synthesis and characterization of methylcellulose/PVA based porous composite. Carbohydrate Polymers. 88(4)(2012) 1364.

40.   Kumar, B., Kaushik, B. K., Negi, Y. S., Influence of the Contact Thickness on Electrical Performance of Staggered and Planer p-Channel Organic Field Effect Transistors. Advanced Materials Research. 622(2013) 1434.

41.   Kumar, S., Negi, Y. S., Nanoparticles Synthesis from Corn Cob (Xylan) and Their Potential Application as Colon‐Specific Drug Carrier. Macromolecular Symposia. 320(1)(2012) 75.

42.   Mittal, P., Kumar, B., Kaushik, B. K., Negi, Y. S., Singh, R. K., Analysis of pentacene based organic thin film transistors through two dimensional finite element dependent numerical device simulation. IJCA, Special Issue on Optimization and On-chip Communication. 1(2012) 11.

43.   Shukla, D., Negi, Y. S., Uppadhyaya, J. S., Kumar, V., Synthesis and Modification of Poly (ether ether ketone) and their Properties: A Review, Polymer Reviews. 52(2)(2012) 189.

44.   Kumar, P., Negi, Y. S., Singh, S.P., Filler loading in the lumen or/and cell wall of fibers - a literature review, BioResources. 6(3)(2011) 3526.

45.   Kumar, P., Negi, Y. S., Singh, S.P., Offset printing behavior of bagasse and hardwood paper sheets loaded by in-situ precipitation;  BioResources. 6(1)(2011) 207.

46.   Goyal, R. K., Tiwari, A. N., Negi, Y. S., Role of interface on dynamic modulus of high-performance poly(etheretherketone)/ceramic composites.  Journal of Applied Polymer Science. 121(1)(2011) 436.

47.   Rani, M., Agarwal A., Negi, Y.S., Review: Chitosan based hydrogel polymeric beads- as drug delivery system. BioResources. 5(4)(2010).

48.   Rani, M., Agarwal, A., Negi, Y.S., Characterization and Biodegradation Studies for Interpenetrating Polymeric Network (ipn) of Chitosan-amino Acid Beads; Journal of Biomaterials and Nanobiotechnology.  (2010).

49.   Rani, M., Maharana, T., Negi, Y.S., A comparative study for interpenetrating polymeric network (IPN) of chitosan amino acids beads for control drug release. African Journal of Pharmacy and Pharmacology. 4(2)(2010) 35.

50.   Kumar, S., Negi, Y.S., Upadhyaya, J.S., Studies on Characterization of Corn Cob Based Nanoparticles. Advanced Materials Letters. 1(3)(2010) 246.

51.   Kumar, S., Upadhyaya, J.S., Negi, Y.S., Preparation of Nanoparticles from Corn Cobs by Chemical Treatment Methods. BioResources. 5(2)(2010) 1292.

52.   Malkapuram, R., Kumar, V., Negi, Y.S., Novel Treated Pine Needle Fiber Reinforced Polypropylene Composites and Their Characterization. Journal of Reinforced Plastics and Composites. (2010)

53.   Goyal, R.K., Damkale, S.R., Mulik, U.P., Negi, Y.S., SHG relaxation behaviour in m-nitroaniline doped PMMA guest-host system.  Advanced Materials Letters. 1(3)(2010) 264.

54.   Sureshkumar, M.S., Goyal, R.K., Negi, Y.S., Preethkumar, A., Reddy, K.R., Singh, R.P., Dadge, J.W., Aiyer, R.C., Studies on the feasibility of Recycled Polystyrene Doped with NLO active meta-Nitroaniline for Optoelectronics Applications. Polymer for Advanced Technologies. (2010). DOI: 10.1002/pat.1685

55.   Maharana, T., Mohanty, B., Negi, Y.S., Melt-Solid Polycondensation of Lactic Acid and its Biodegradability. Progress in Polymer Science. 34(2009) 99.

56.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Thermal, Mechanical and Dielectric Properties of High Performance PEEK/AlN Nanocomposites. Journal of Nanoscience and Nanotechnology. 9(12)(2009) 6902.

57.   Malkapuram, R., Kumar, V., Negi, Y.S., Recent development in natural fiber reinforced polypropylene composites. Journal of Reinforced Plastics and Composites. 28(10)(2009) 1169.

58.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Study on Microhardness, Dynamic Mechanical and Tribological Properties of PEEK/Al₂O₃ Composites. Journal of Applied Polymer Science. 110(2008) 3379.

59.   Sureshkumar, M.S., Goyal, R.K. Negi, Y.S., Potential Applications of Polystyrene in Optoelectronics. Progress in Rubber, Plastics and Recycling Technology. 24(1)(2008) 53.

60.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Thermal Expansion Behavior of High Performance PEEK Matrix Composites. Journal of Physics D: Applied Physics. 41(2008).

61.   Goyal, R.K., Tiwari, A.N., Negi, Y.S., High Performance Nanocomposites for Tribological Applications: Preparation and Characterization. Materials Science and Engineering A. 486(2008) 602.

62.   Goyal, R.K., Tiwari, A.N., Negi, Y.S., Microhardness of PEEK/Ceramic Micro-/Nano- Composites: Correlation with Halpin-Tsai Model. Materials Science and Engineering A. 491(2008) 230.

63.   Adhyapak, P. V., Islam, M., Aiyer, R. C., Mulik, U. P., Negi, Y. S., Amalnerkar, D. P., Preparation, characterization and non-linear optical properties of pristine m-nitroaniline (m-NA) and its recycled polystyrene (Re-PS) coated single crystals. Journal of Crystal Growth. 310(11)(2008) 2923.

64.   Goyal, R. K., Tiwari, A. N., Mulik, U. P., Negi, Y. S., Novel high performance Al₂O₃/poly(ether ether ketone) nanocomposites for electronics applications. Composites Science and Technology. 67(9)(2007) 1802.

65.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Effect of aluminum nitride on thermomechanical properties of high performance PEEK. Composites: Part A. 38(2007) 516.

66.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Dynamic mechanical properties of Al₂O₃/poly (ether ether ketone) composites. Journal of Applied Polymer Science. 104(2007) 568. doi: 10.1002/app.25607

67.   Maharana, T., Negi, Y. S., Mohanty, B., Review Article: Recycling of Polystyrene. Polymer- Plastics Technology and Engineering. 46(7)(2007) 729. DOI: 10.1080/03602550701273963

68.   Goyal, R.K., Negi, Y.S., Tiwari, A.N. High performance polymer composites on PEEK reinforced with aluminum oxide. Journal of Applied Polymer Science. 100(6)(2006) 4623. doi: 10.1002/app.23083

69.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Anisotropic Linear Thermal Expansivity of Poly(ether-ether-ketone). European Polymer Journal. 42(2006) 2888.

70.   Mall, I.D., Agarwal, C.P., Negi, Y.S., Agarwal, S.P., Effect of fiber loading on bagasse fiber - PVC composites.  Int. J. Plastics Technology. 10(2)(2006) 655.

71.   Nair, G.G., Hegde, G., Prasad, S.K., Lobo, C., Negi, Y.S., Photoinduced Effects in the vicinity of the Smectic-A-Smectic-CA* Transition-Polarization, Tilt Angle and Response Time Studies. Physical Review. E73(2006) 011712.

72.   Nair, G.G., Hegde, G., Prasad, S.K., Negi, Y.S., Investigations of the opto-dielectric effects in the vicinity of the smectic-A-smectic-C*A transition.  Journal of Physics: Condensed Matter. 18(41)(2006) 9415.

73.   Goyal, R.K., Negi, Y.S., Tiwari, A.N., Preparation of high performance composites based on aluminum nitride/poly(ether–ether–ketone) and their properties, European Polymer Journal. 41(9)(2005) 2034.

74.   Negi, Y.S., Adhyapak, P. V., Damkale, S.R., Goyal, R.K., Islam, M., Aiyer, R.C., Preparation of Novel Optical Grade m-Nitroaniline and Polymethylmethacrylate Coated Single Crystals and their Optical Properties. Materials Letters. 58(30)(2004) 3929.

75.   Goyal, R. K., Damkale, S. R., Adhyapak, P. V., Islam, M., Aiyer, R. C., Negi, Y. S., Preparation and Investigation of Second Harmonic Generation (SHG) Properties of m-Nitroaniline Doped PMMA Guest-Host System for Optoelectronic Device Applications. International Journal of Plastics Technology. 8(2004) 249.

76.   Negi, Y.S., Goyal, R.K., Development of Thermotropic Liquid Crystalline Polymers and their Applications. International Journal of Plastics Technology. 7(2)(2003), 99.

77.   Negi, Y.S., Development of Polyimides, their Applications, International J. Plastic Technology. 5(2003).

78.   Negi, Y.S., Development of polyimides containing hexafluoroisopropylidene and isopropylidene moieties in molecular structures and their applications. International Journal of Plastics Technology. 6(1)(2003) 53.

79.   Prasad, S.K., Sandhya, K.L., Rao, D.S.S., Negi, Y.S., Time-resolved measurements of the dynamics of the photoinduced smectic-Cα*-smectic-A transition.  Physical Review E: Statistical, Nonlinear, and Soft Matter Physics. 67(5-1)(2003) 051701/1.

80.   Prasad, S.K., Sandhya, K.L., Negi, Y.S., Photoinduced Effect In The Vicinity of The Smectic-C alpha*-Smectic-A Transition. Physical review. E, Statistical, nonlinear, and soft matter physics. 65(3.1)(2002) 031718.

81.   Adhyapak, P.V., Trupti, M., Pethkar, S., Chandwadkar, A.J., Negi, Y.S., Vijaymohanan, K., Application of Electrochemically Prepared Carbon Nanofibres Towards Supercapacitors. J. Power Sources. 109(1)(2002) 105.

82.   Negi, Y.S., Adhyapak, P.A., Development in polyaniline conducting polymers. Journal of Macromolecular Science: Polymer Reviews. C42(1)(2002) 35.

83.   Negi, Y. S., Goyal, R. K., Recent Development of Acrylic Polymer Coating for Corrosion Control and other  Applications. Molecular Crystals and Liquid Crystals Science and Technology, Section C: Molecular Materials. 14(2)(2001) 103.

84.   Negi, Y.S., Damkale, S.R., Ansari, S., Photosensitive Polyimides. Journal of Macromolecular Science: Polymer Reviews. C41(1&2)(2001) 95.

85.   Negi, Y.S., Suzuki, Y., Kawamura, I., Kakimoto, M., Imai, Y., Synthesis and properties of polyamide-imide based on 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane and 2,2-bis[4-(4-aminophenoxy) phenyl]propane. High Performance Polymers. 10(1)(1998) 45.

86.   Negi, Y.S., Suzuki, Y., Kawamura, I., Kakimoto, M., Imai, Y., Synthesis and Properties of Polyamide-imide Based on 2,2-Bis (4-(4- Aminophenoxy) Phenyl) Hexafluoro Propane and 2,2- Bis (4-(4-Aminophenoxy) Phenyl) Propane. High Performance Polymers. 10(1998) 1.

87.   Negi, Y.S., Suzuki, Y., Kawamura, I., Kakimoto, M., Imai, Y., Synthesis and characterization of soluble polyamides based on 2,2-bis[(4-aminophenoxy)phenyl] hexafluoropropane and 2,2-bis[4-(4-aminophenoxy)phenyl]propane and diacid chlorides.  Journal of Polymer Science, Part A: Polymer Chemistry 34(9)(1996) 1663.

88.   Negi, Y.S., Suzuki, Y., Kawamura, I., Kakimoto, M., Imai, Y., Synthesis and Characterization of Soluble Polyamides based on 2,2- Bis (4-(4-Aminophenoxy) Phenyl) Hexafluoro Propane and Aromatic Diacid Chlorides. J. Polym. Sci., Polym. Part A, Chem. (1995).

89.   Negi, Y. S., Kawamura, I., Suzuki, Y., Yamamoto, N., Yamada, Y., Kakimoto, M., Imai, Y., Polyimide, polyamide-imide and polyamide alignment layers for antiferroelectric liquid crystal display cells and their structural effect on hysteresis behavior. Molecular Crystals and Liquid Crystals Science and Technology, Section A:  Molecular Crystals and Liquid Crystals. 239(1994) 11.

90.   Negi, Y. S., Suzuki, Y., Hagiwara, T., Kawamura, I., Yamamoto, N., Mori, K., Yamada, Y., Kakimoto, M., Imai, Y., Surface alignment of ferroelectric liquid crystals using polyimide, polyamide-imide and polyamide layers and their effect on pre-tilt angle. Liquid Crystals. 13(1)(1993) 153.

91.   Negi, Y.S., Yamamoto, N., Suzuki, Y., Kawamura, I., Yamada, Y., Kakimoto, M., Imai, Y., Alignment layers for ferro and antiferroelectric liquid crystal cells. Japanese Journal of Applied Physics, Part 1:  Regular Papers, Short Notes & Review Papers. 31(12A)(1992) 3934.

92.   Negi, Y.S., Rawat, M.S.M., Pant-Joshi, G., Badoni, S., Biochemical investigation of fruits of some common Ficus species. Lebensmittel-Wissenschaft und-Technologie. 25(6)(1992) 582.

93.   Negi, Y.S., Suzuki, Y., Kawamura, I., Hagiwara, T., Takahashi, Y., Iijima, M., Kakimoto, M., Imai, Y., Synthesis and properties of polyimides based on 2,2-bis[4-(4-aminophenoxy)phenyl]propane and 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane. Journal of Polymer Science, Part A:  Polymer Chemistry. 30(10)(1992) 2281.

94.   Negi, Y. S., Suzuki, Y., Hagiwara, T., Kawamura, I., Yamamoto, N., Yamada, Y., Mori, K., Kakimoto, M.  Imai, Y., Surface Alignment of Ferroelectric Liquid Crystals using Polyimide, Polyamide-Imide and Polyamide  Layers and Their Effect on Pre-Tilt Angle. Liquid Crystals. 13(1992) 153.

95.   Negi, Y. S., Yamamoto, N., Suzuki, Y., Kawamura, I., Yamada, Y., Kakimoto, M., Imai, Y., Alignment Layers for Antiferroelectric Liquid Crystal Cells and Their Effect on Contrast Ratio. Jpn. J. Appl. Phys., Part I. 31(12)(1992) 3934.

96.   Negi, Y. S., Suzuki, Y., Hagiwara, T., Kawamura, I., Yamamoto, N., Yamada, Y., Mori, K., Kakimoto, M., Imai, Y., Alignment layers for ferro and antiferroelectric liquid crystal cells. Polymer Preprints (American Chemical Society, Division of Polymer Chemistry). 32(2)(1991) 112.

97.   Yamamoto, N., Yamada, Y., Mori, K., Nakamura, K., Orihara, H., Ishibashi, Y., Suzuki, Y., Negi, Y.S., Kawamura, I.,  Switching properties in antiferroelectric liquid crystals. Japanese Journal of Applied Physics, Part 1:  Regular Papers, Short Notes & Review Papers. 30(9B)(1991) 2380.

98.   Aihara, Y., Suzuki, Y., Hagiwara, T., Sadamune, Y., Negi, Y. S., Kawamura, I., Kitazume, T.,  Yamada, Y., Yamamoto, N., Mori, K., Tristable Liquid Crystals (I) - Abstract. Mol. Cryst. Liq. Cryst. Bull. 6(4)(1991).

99.   Hagiwara, T., Suzuki, Y., Aihara, Y., Sadamune, Y., Negi, Y.S., Kawamura, I., Yamada, Y., Yamamoto, N., Mori, K., Tristable Liquid Crystals (III)-Abstract. Mol. Cryst. Liq. Cryst. Bull. 6(4)(1991).

100.          Negi, Y. S., Gupta, S. P., Varma, I. K., Synthesis and characterization of 2, 5-bis (p-maleimidophenyl)-3, 4-diphenylthiophene. Journal of Polymer Materials. 7(1)(1990) 85.

101.          Negi, Y. S., Suzuki, Y., Hagiwara, T., Kawamura, I., Iijima, M., Takahashi, Y., Kakimoto, M., Imai, Y., Synthesis and Properties of Polyimides and Polyamides based on 2,2-Bis (4-(4- Aminophenoxy) phenyl) Hexafluoro Propane. Japan Polym. Soc. Polym. Prep. 39(2)(1990) E896.

102.          Souma, Y., Negi, Y.S., Sano, H., Iyoda, J., Ishii, E.,  Studies on the storage of hydrogen by potassium bicarbonate using palladium/carbon catalyst.  Chemistry Express; Kinki Chem. Soc. Japan. 3(5)(1988) 255.

103.   Souma, Y., Negi, Y.S., Sano, H., Iyoda, J., Ishii, E., Studies on the storage of hydrogen by potassium bicarbonate-potassium formate system, Osaka Kogyo Gijutsu Shikensho Kiho. 39(3)(1988) 147.

104.   Negi, Y. S., Imai, Y., Kakimoto, M.,  Synthesis and characterization of aromatic polyesters containing tetraphenylthiophene unit. Journal of Polymer Materials. 5(1)(1988) 67.

105.   Kakimoto, M., Akiyama, R., Negi, Y.S., Imai, Y., Synthesis and characterization of aromatic polyimide and polyamide-imide from 2,5-bis(4-isocyanatophenyl)-3,4-diphenylthiophene and aromatic tetra- and tricarboxylic acids. Journal of Polymer Science, Part A:  Polymer Chemistry. 26(1)(1988) 99.

106.   Negi, Y.S., Hydrogen Storage by Potassium Bicarbonate Using Pd/C as Catalyst. Gov. Industrial Res.Inst.Osaka (GIRIO) Gov. Industrial Res. Org. News. 32(6)(1988).

107.   Varma, D. S., Negi, Y. S., Varma, I. K., Structure-property relationship in copolyesters.  Part III.  Dyeing behavior of poly (ethylene terephthalate-hexamethylene terephthalate) fibers  Indian Journal of Fibre and Textile Research. 12(1)(1987) 1.

108.   Varma, I.K., Negi, Y.S., Varma, D.S., Preparation and characterization of ethylene terephthalate-octamethylene terephthalate copolyesters. Journal of Polymer Materials. 3(4)(1986) 197.

109.   Negi, Y.S., Imai, Y., Kakimoto, M., Preparation and properties of soluble aromatic poly (amide esters) from 2, 5-bis (4-chloroformylphenyl)-3, 4-diphenylthiophene and aminophenols. Journal of Polymer Materials. 3(3)(1986) 155.

110.   Varma, D. S., Negi, Y. S., Choudhary, V., Varma, I. K., Structure-property relationship in copolyesters.  Part II.  Thermo-mechanical characterization of poly(ethylene terephthalate-hexamethylene terephthalate) fibers. Indian Journal of Fibre and Textile Research. 11(4)(1986) 173.

111.   Kakimoto, M., Negi, Y.S., Imai, Y., Synthesis and characterization of aromatic polyesters and poly(amide esters) from bisphenols and aromatic aminophenols, and 2,5-bis(4-chloroformyl)-3,4-diphenylthiophene. Journal of Polymer Science, Part A:  Polymer Chemistry. 24(7)(1986) 1511.

112.   Kakimoto, M., Negi, Y.S., Imai, Y., Synthesis and characterization of soluble aromatic polyamides derived from 2,5-bis(4-chloroformylphenyl)-3,4-diphenylthiophene and aromatic diamines. Journal of Polymer Science, Polymer Chemistry Edition. 23(6)(1985) 1787.

113.   Negi, Y.S., Choudhary, V., Varma, I.K., Varma, D.S., Structure-property relationship in copolyesters.  I.  Preparation and characterization of ethylene terephthalate-hexamethylene terephthalate copolymers, Journal of Applied Polymer Science. 28(7)(1983) 2291.

114.   Varma, D.S., Negi, Y.S., Choudhary, V., Varma, I.K., Structure-property relationships in copolyesters. Polymer Preprints (American Chemical Society, Division of Polymer Chemistry). 24(1)(1983) 245.

115.   Negi, Y.S., Ph.D. Thesis entitled “Structure Properties Relationship in Copolyesters” Submitted at IITD, March (1983).

RESEARCH PAPERS PUBLISHED IN INTERNATIONAL/NATIONAL PROCEEDINGS

1.      Deeba, F., Pruthi, V.,  Negi, Y. S., Aromatic hydrocarbon biodegradation activates neutral lipid biosynthesis in Cryptococcus psychrotolerans IITRFD, International Conf. on Emerging Trends in Biotechnology for Waste Conversion (ETBWC), CSIR-National Environmental Engineering Research Institute (NEERI),  Nagpur, Maharashtra, Oct. 8-10, 2017.

2.      Deeba, F., Pruthi, V.,  Negi, Y. S., Single cell oil production utilizing industrial waste, 5th EPNOE International Polysaccharide Conference, Polysaccharides and polysaccharide-based materials: from science to industrial application, Friedrich Schiller University of Jena, Jena, Germany, Aug. 20 – 24, 2017.

3.      Priyadarshi, R., Negi, Y. S., Effect of varying zinc oxide nanoparticle filler concentration of chitosan films for potential biodegradable food packaging Application, 5th EPNOE International Polysaccharide Conference, Polysaccharides and polysaccharide-based materials: from science to industrial application, Friedrich Schiller University of Jena, Jena, Germany, Aug. 20 – 24, 2017.

4.      Bano, S., Negi, Y. S., Light scattering studies on the cellulose nanocrystals extracted from eucalyptus bark by a novel green method, 5th EPNOE International Polysaccharide Conference, Polysaccharides and polysaccharide-based materials: from science to industrial application, Friedrich Schiller University of Jena, Jena, Germany, Aug. 20 – 24, 2017.

5.      Sauraj., Negi, Y. S., Synthesis and in-vitro release studies on xylan-5-fluorouracil-1-acetic acid conjugates as prodrugs for colon cancer treatment, 2^nd International Conf. on Bridging innovation in pharmaceutical, medical and biosciences, Bhopal, M.P, India, 11-12 Feb. 2017.

6.      Priyadarshi, R., Negi, Y. S., Hot stage microscopy aided analysis of real time thermal properties of chitosan based films,  28^th IAPRI Symp.on Packaging, Olympic Museum, Lausanne, Switzerland, May 9-12, 2017.

7.      Sauraj., Negi, Y. S., Synthesis and Bioevaluation of Xylan-5-Fluorouracil-1-Acetic acid conjugates for colon specific drug delivery, National Conf.on Green Chemistry for Sustainable Future, ,  Ch. Chhotu Ram PG college, Muzaffarnagar, U.P, India, Feb. 25, 2017.

8.      Kumar, B., Negi, Y. S., Synthesis and characterization of water soluble based Poly(Potassium 1-Hydroxy Acrylate) Polymer, National Conf. on Green Chemistry for Sustainable Future,  Ch. Chhotu Ram PG college, Muzaffarnagar, U.P, India, Feb. 25, 2017.

9.      Deeba, F., Pruthi, V.,  Negi, Y. S., Fostering TAG accumulation in novel oleaginous yeast Cryptococcus sp. IITRFD utilizing groundnut shell for improved biodiesel production, International Conf. on Current Trends in Biotechnology (ICCB-2016), Vellore Institute of Technology (VIT), Vellore, India, Dec 8-10, 2016.

10.   Kulshreshtha, A., Negi, Y. S., Design and Development of Modified Atmospheric Packaging to Reduce Global Cooked Food Waste, Challenges and Opportunities in Food Packaging, IICPT, Thanjavur, Sept. 23, 2016.

11.   Bano, S., Negi, Y. S., Environmental friendly extraction of cellulose nanocrystals from agrowaste material: A novel approach, International Conf. on RECENT TRENDS IN ENGINEERING AND MATERIAL SCIENCES (ICEMS-2016), Jaipur National University, Jaipur, India, Mar. 17-19, 2016.

12.   Priyadarshi, R., Negi, Y. S.,  Analysis of real time thermal properties of chitosan based films using hot stage microscopy, International Conf. on  RECENT TRENDS IN ENGINEERING AND MATERIAL SCIENCES (ICEMS-2016), Jaipur National University, Jaipur, India, Mar. 17-19, 2016.

13.   Kumar, B., Negi, Y. S., Synthesis of water soluble poly(potassium 1-hydroxy acrylate) by using different efficient catalysts, International Conf. on RECENT TRENDS IN ENGINEERING AND MATERIAL SCIENCES (ICEMS-2016), Jaipur National University, Jaipur, India,, Mar. 17-19, 2016.

14.   Deeba, F., Priyadarshi, R.,  Negi, Y. S.,  Paper Presentation, Effect of C6 and C5 Sugars on the Growth and Lipid Accumulation of Oleaginous Yeast Cryptococcus vishniaccii. International Conf. on RECENT TRENDS IN ENGINEERING AND MATERIAL SCIENCES (ICEMS-2016), Jaipur National University, Jaipur, India, Mar. 17-19, 2016.

15.   Priyadarshi, R., Negi, Y. S., Effect of Varying Filler Concentration on Zinc Oxide Nanoparticle Embedded Chitosan Films as Potential Food Packaging Material, 5^th National Symp. on Advances in Chemical Sciences, Guru Nanak Dev University, Amritsar, India, Feb. 2-3, 2016.

16.   Kumar, B., Negi, Y. S., Synthesis of 2-isopropyl-5-methylene-1,3-dioxolan-4-one monomer by cyclocondensation of L-Lactic acid and isobutyraldehyde, 5^th National Symp. on Advances in Chemical Sciences, Guru Nanak Dev University, Amritsar, India, Feb. 2-3, 2016.

17.   Bhagchandani, S., Joshi, N., Ermann, J., Aliprantis, A.O., Negi, Y. S.,  Karp, J. M., An on-demand drug delivery platform for the treatment of inflammatory arthritis, MIT Sloan Healthcare and Bio-innovations Conference, USA, 2016.

18.   Deeba, F., Pruthi, V.,  Negi, Y. S., Converting paper mill sludge into neutral lipids, New Horizons in Biotechnology (NHBT-2015), Trivandrum, Kerala, India, Nov. 22-25, 2015.

19.   Priyadarshi, R., Negi, Y. S., Development of ZnO Nanoparticle Embedded Chitosan films as a Food Packaging Material, 27^th IAPRI Symp.on Packaging, Valencia, Spain, Jun. 8-11, 2015.

20.   Kumar, A., Choudhary, V.,Negi, Y. S., Bhardwaj, N.K., Effect of Modified Cellulose Nanocrystals as Nano-reinforcement on Ternary Polymeric Scaffolds fabricated via Thermal-Induced Phase Separation (TIPS) process, 4th International Conf. on Recent Advances in Composite Materials (ICRACM-2013), International Centre, Goa, India, Feb. 18-21, 2013.

21.   Kumar, A., Negi, Y.S., Choudhary, V., Bhardwaj, N.K., Structure and   Properties of Cellulose Nanocrystals/Ovalbumin/PVA Based Porous Nanocomposites, Third International Conf.on Multifunctional, Hybrid and Nanomaterials (Hybrid Materials 2013), Hilton Sorrento Palace Hotel, Sorrento (near Naples), Italy, Mar. 3-7, 2013.

22. Maharana, T., Sutar, A.K., Mohanty, B., Negi, Y.S., Taguchi method of experimental design for the preparation of Poly(lactic Acid) nanoparticle, International Conf.on Recent Trends in Organometallic Compounds and their Industrial Applications, KIIT University, Bhubaneswer; Feb. 5-7, 2013.

23. Kumar, S., Negi, Y.S., Agro-waste Corn Cob Xylan Nanoparticles: Ester Prodrug of 5-Aminosalicylic acid, Third International Symp.on Green Chemistry for Environment, Health and Development, Skiathos, Greece. Oct. 3-5, 2012.

24.   Negi, Y.S., Kumar, S., Corn Cob-based Nanoparticles: Ester Prodrug of 5-Aminosalicylic acid, Synthesis, Physiochemical Characterization and Studies of Possible Targeted Drug Delivery, Third International Symp. on Green Chemistry for Environment, Health and Development, Skiathos, Greece, Oct. 3-5, 2012.

25.   Maharana, T., Sutar, A.K., Mohanty, B., Negi, Y.S., Preparation and properties of poly(lactic acid) nanoparticles by nanoprecipitation technique, National seminar on Chemistry in Technology, 26^TH annual Conf. of Orissa Chemical Society at Ravenshaw  University ; Dec. 8-9, 2012.

26.   Kumar, B., Kaushik, B. K., Negi, Y.S., Analysis of Contact Resistance Effect on Performance of Organic Thin Film Transistors, Proc. IEEE Int. Conf. on Symp.on Communication Systems and Network Technologies  (CSNT-2012), Rajkot, Gujarat, May 11-13, 2012.

27.   Kumar, B., Kaushik, B. K., Negi, Y.S., Analysis of Contact Resistance Effect on Performance of Organic Thin Film Transistors, 3rd International Symp.on Electronic System Design (ISED 2012), Bengal Engineering and Science University, Shibpur (Kolkata), WB, India, Dec. 19-22, 2012.

28.   Goswami, V., Kumar, B., Kaushik, B. K., Yadav, K.L., Negi, Y.S., Effect of Dielectric Thickness on Performance of Dual Gate Organic Field Effect Transistors,  Proc. IEEE Int. Conf. on Communications, Devices and Intelligent Systems (CODIS-2012), Kolkata, India, Dec. 28-29, 2012.

29.   Kumar, B., Kaushik, B. K., Negi, Y.S., Mittal, P., Polymeric thin film transistor characteristics and their applications: prospects and challenges, Proc. IEEE Int. Conf. on Electrical and Computer Technology (ICETECT-2011), Nagercoil, Kanyakumari, India, Mar. 23-24, 2011.

30.   Kumar, B., Kaushik, B. K., Negi, Y.S., Mittal, P., Analysis of organic thin film transistors,  Proc. Nat. Conf. on Issues and Challenges in Technology and Management (ICTM-2011),  Jabalpur, Mar. 25-26, 2011.

31.   Kumar, B., Kaushik, B. K., Negi, Y.S., Mittal, P., Organic thin film transistor: materials, structures and operational parameters, Proc. Nat. Conf. on Signal Processing and real Time Operating System (SPRTOS-2011), Supported  by IEEE UP Section, Kanpur, Mar. 26-27, 2011.

32.   Mittal, P., Kumar, B., Negi, Y.S., Kaushik, B.K., Organic Thin Film Transistor: Materials, Structures and Operational Parameters, Proc. Nat. Conf. on Signal Processing and real Time Operating System (SPRTOS-2011), Supported  by IEEE UP Section, HBTI-Kanpur, Mar. 26-27, 2011.

33.   Mittal, P., Kumar, B., Negi, Y.S., Kaushik, B.K., Singh, R.K., Organic Thin Film Transistor Architecture, Parameters and their Applications, Proc. IEEE Int. Conf. on Communication Systems and Network Technologies (CSNT 2011), Katra (J&K), Jun. 3-5, 2011.

34.   Kumar, S., Negi Y.S., Upadhyaya, J.S., Ramchandran, S., Preparation and Characterisation of Corn Cob Based Nanoparticles, University Institute of Chemical Engineering & Technology, Panjab University, Chandigarh, Nov. 26-27, 2010.

35.   Negi, Y.S., Goyal, R.K., Tiwari, A.N., High Performance Poly (Ether-Ether-Ketone)/Aluminium Trioxide and Aluminium Nitride Based Micro and Nano Composites, 17^th Int. Conf. on Composites or Nano Engg, ICCE-17, Hawaii, USA, Jul. 26-31, 2009.

36.   Verma, P., Mehta, N., Negi, Y.S., Computational Modeling and Structure Property Prediction of High Performance Polyamides Based on 2,5-bis(4-carboxyphenyl)-3,4-diphenylthiophene and Aromatic Diamines, Int. Conf. on Polymer Processing Soc., Goa, Mar. 1-5, 2009.

37.   Shukla, D., Negi, Y.S., Kumar, V., Akhtar, S., Crystallization and Morphological Behavior of PEEK/Nano Talc Powder Nanocomposites, Plast India-2009, New Delhi, Feb. 6-7, 2009.

38.   Goyal, R.K., Damkale, S.R., Mulik, U.P., Negi, Y.S., Dadge, J., Aiyer, R.C., Organic Guest-Host Systems Based on  Polymers and 2-Methyl-4-Nitroaniline for Optoelectronics Applications, Int. Conf. on Advances in Polymer Science and Technology (POLY-2008), IIT Delhi, Jan. 28-31, 2008.

39.   Goyal, R.K., Tiwari, A.N., Negi, Y.S., High performance PEEK/Al₂O₃ Micro- and Nano- Composites, Int. Conf. on Advances in Polymer Science and Technology (POLY-2008), IIT Delhi, Jan. 28-31, 2008.

40.   Goyal, R.K., Tiwari, A.N., Negi, Y.S., High performance Poly(ether-ether-ketone) Matrix Composites, Int. Conf. on Advances in Polymer Science and Technology (POLY-2008), IIT Delhi, Jan. 28-31, 2008.

41.   Goyal, R.K., Tiwari, A.N., Negi, Y.S., Preparation and characterization of high performance polymer matrix composites based on PEEK/AlN or Al₂O₃ dispersions, 19th AGM of Materials Research Society of India (MRSI), Feb. 14-16, 2008.

42.   Goyal, R.K., Tiwari, A.N., Negi, Y.S., High Performance Polymer/Aluminum Nitride Particulate Composites, 2^nd International Symp. on Advanced Materials and Polymers for Aerospace and Defense Applications (SAMPADA-2008), Pune, India. Dec. 8-10, 2008.

43.   Adhyapak, P.V., Ambekar, A., Chikhalikar, K.,  Dadge, J.W., Aiyer, R.C.,  Amalnerkar, D.P., Negi, Y.S., Preparation of Polystyrene Coated m-NA Single Crystals and Their NLO Properties, Asian Polymer Association, Int. Conf. POLY-08, IIT Delhi, India, Jan. 28 -31, 2008.

44.   Mekap, D., Ansari, M.F., Negi, Y.S.,  Bionanotechnology- The Confluence of Molecular Biology and Molecular Nanotechnology, Asian Polymer Association, Int. Conf. POLY-08, IIT Delhi, India, Jan. 28-31, 2008.

45.   Malkapuram, R., Kumar, V., Negi, Y.S.,  Effect of Fiber Pretreatment on the Performance of Pine Needle Fiber Reinforced Polypropylene Composites, Asian Polymer Association, Int. Conf. POLY-08, IIT Delhi, India, Jan. 28-31, 2008.

46.   Santhi, C.V., Mangal, K., Meghshyam, C., Rawat, M.S., Dadge, J.W., Aiyer, R.C., Negi, Y.S.,  Preparation and Characterization of Bulk and Optoelectronic Properties of m-NA Doped PVA Films, Asian Polymer Association, Int. Conf. POLY-08, IIT Delhi, India, Jan. 28-31, 2008.

47.   Santhi, C.V., Dadge, J.W., Aiyer, R.C., Negi, Y.S.,  Free Standing Film Material Based on m-Nitroaniline Doped Polyether Sulfone for Frequency Doubling Applications, Asian Polymer Association, Int. Conf. POLY-08, IIT Delhi, India, Jan. 28-31, 2008.

48.   Meghashyam, C., Kumar, A., Teja, P.V.R., Kumar, A., Godiyal R., Negi, Y.S., Cellulose as a Smart Material for Flexible Micro-Device Applications, Asian Polymer Association, Int. Conf. POLY-08, IIT Delhi, India, Jan. 28-31, 2008.

49.   Maharana, T., Mohanty, B., Negi, Y.S., Synthesis of poly (lactic acid) by Melt Polycondensation and Their Characterizations, Asian Polymer Association, Int. Conf. POLY-08, IIT Delhi, India, Jan. 28-31, 2008.

50.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Novel High Performance Polymer Matrix Composites for Electronics Substrates, 10^th Int. Conf. on Advanced Materials (IUMRS-ICAM 2007), Bangalore, Oct. 8-13, 2007.

51.   Goyal, R.K., Subhangi, S.R., Negi Y.S., Mulik, U.P., Aiyer, R.C., Preparation and Properties of Guest-Host System Based on 2-Methyl-4-Nitroaniline and Polyvinyl Alcohol, 10^th Int. Conf. on Advanced Materials (IUMRS-ICAM 2007), Bangalore, Oct. 8-13, 2007.

52.   Santhi, C.V., Maharana, T., Dadge, J.W., Aiyer, R.C., Negi Y.S., Novel Free Standing Film Material Based on m-Nitroaniline Doped Polyether Sulfone for Frequency doubling Applications, 2nd International Conf. on Advances in Petrochemicals and Polymers, Bangkok, Thailand, Jun. 25-28, 2007.

53.   Maharana, T., Mohanty, B., Ray, A.K., Negi Y.S., Physico-Thermal and Temperature Dependent Computational Thermal Kinetic Studies of Poly (Lactic Acid), 2nd International Conf. on Advances in Petrochemicals and Polymers, Bangkok, Thailand, Jun. 25-28, 2007.

54.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Novel High Performance Polymer Matrix Composites For Electronics Substrates, International Conf. on Advanced Materials (ICAM), Bangalore, India, Mar. 2007.

55.   Goyal, R.K., Subhangi, S.R., Negi, Y.S., Mulik, U.P., Aiyer, R.C., Preparation and Properties of Guest-Host System Based on 2-Methyl-4-nitroaniline and Polyvinyl alcohol, International Conf.on Advanced Materials (IUMRS / ICAM) Bangalore, India, Mar. 2007.

56.   Negi, Y.S., Plastic Waste Recycling, e-Waste Handling and Value Added Plastics for Sustainable Future-A Short Term Course Authorization, procedures, technologies for treatment, recycling and reprocessing of hazardous waste, Central Pollution Control Board, Department of Chemical Engg., IIT, Roorkee, Uttrakhand, India, Nov. 20-24, 2006.

57.   Negi, Y.S. et al., Photoinduced Effects in the Vicinity of the smectic-A- Smectic-CA* transition-Polarization, tilt angle and response time studies, Proceedings, ILCC, Keystone, Colorado, USA, Jul. 2-7, 2006.

58.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Advanced Polymer Composites for Electronics Applications, Proc. of Indo-Singapore Symp. on Advanced Functional Materials (AFMS-2006) organized by Materials Research Soc. of India, IIT Bombay and Institute of Materials (East Asia) and Materials Research Soc. of Singapore, Bombay, India, Feb. 24-26, 2006.

59.   Goyal, R.K., Tiwari, A.N., Negi, Y.S.,  Morphological Study of High Performance Nanocomposites of PEEK reinforced with Al₂O₃, Seminar on Advances in Metallography and Microstructure (Microstructure-2005), Indian Institute of Metals (IIM), Anushaktinagar, Mumbai, India, Dec. 1-2, 2005.

60.   Goyal, R.K., Damkale, S.R., Mulik, U.P., Negi, Y.S.,  Dadge, J.W., Aiyer, R.C., Low Cost Polyvinyl alcohol/2-Methyl-4-nitroaniline Composites (Guest-Host System) for Optoelectronics Devices, Proceeding of National Symp.and Conf.on Solid State Chemistry and Allied Areas (ISCAS 2005), Goa, India, Dec. 1-3, 2005.

61.   Goyal, R.K., R.M., Mulik, U.P., Negi, Y.S.,  Dadge, J.W., Aiyer, R.C., Recycled Polystyrene/2-Methyl-4-nitroaniline Composites for Optoelectronics Applications, Proceeding of National Symp.and Conf.on Solid State Chemistry and Allied Areas (ISCAS 2005), Goa, India, Dec. 1-3, 2005.

62.   Goyal, R.K., Negi, Y.S., Tiwari, A.N., Preparation and Characterization of High Performance Al₂O₃/PEEK Composites, Proceeding of International Conf. on Advances in Polymer Blends, Composites, IPNS and Gels: Macro to Nano Scales, Kottayam, India, Mar. 21-23, 2005.

63.   Goyal, R.K., Negi, Y.S., Tiwari, A.N., High Performance Polymer Matrix Composites Based on AlN/PEEK for Electronics Applications, Proceeding of International Conf. on Advances in Polymer Blends, Composites, IPNS and Gels: Macro to Nano Scales, Kottayam, India, Mar. 21-23, 2005.

64.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Nanocomposites of Poly (ether ether ketone)/Al₂O₃ for Electronics Applications, Proc. Of International Conf. on Advanced Materials Design and Development (ICAMDD-2005), Goa, India, Dec. 14-16, 2005.

65.   Goyal, R.K., Tiwari, A.N., Mulik, U.P., Negi, Y.S., Effect of aluminum nitride on thermomechanical properties of high performance PEEK. Composites Part A, 2005.

66.   Sureshkumar, M.S., Negi, Y.S., Preparation and characterization of m-Nitroaniline doped Recycled Polystyrene Film for Optoelectronics Applications, Proc. 4^th DAE-BRNS national Laser Symposium-NLS-4, Bhaba Atomic Research Center, Mumbai, India, Jan. 10-13, 2005.

67.   Goyal, R.K., Negi, Y.S., Islam, M., R.C. Aiyer, Preparation and Optical Characterization of New Poled Polymer Films Based on m-Nitroaniline Doped Polycarbonate and Their Applications in Optoelectronics, National Conf.on Materials Advances (NCMA-04), Kurukshetra, Harayana, Mar. 12-13, 2004.

68.   Sureshkumar, M.S., Goyal, R.K., Aiyer, R.C., Negi, Y.S., Preparation and Properties of Novel NLO Active m-NA Doped Recycled Polystyrene, Proceeding of Soc. of Polym. Sci.,National Chemical Laboratory, Pune, India, 2004.

69.   Negi, Y.S., Goyal, R.K., Damkale, S.R., Study on Melt Flow Behavior of Blends Based on Nylon 12/ PET/p-HBA (LCP), Proceeding of National Seminar on Emerging Trends in Polymer Engineering (NSETPE 2004), Kottayam, Kerala, India, Mar. 18-19, 2004.

70.   Negi, Y.S., Goyal, R.K., Characterization of High Performance Polymers Using SEM and X-ray Techniques, Proceedings APT-04, International Seminar, Kochin University, Kochin, India, Jan. 16-17, 2004.

71.   Goyal, R.K., Negi, Y.S.,  Aiyer, R.C., Islam, M., Preparation and Optical Characterization of New Poled Polymer Film Based on m-Nitroaniline (m-NA) Doped Polycarbonate (PC) and Their Application in Optoelectronics,  NCMA-2004, Dept. of Physics, Kurukhetra Univ., Kurukshetra, India, Feb. 23-25, 2004.

72.   Negi, Y.S.,  Goyal, R.K., Damkale, S.R., Adhyapak, P.V.,  Islam, M.,and Aiyer, R.C., Chemistry, Design and Development of Optical Grade m-Nitroaniline Crystals and Poled m-NA doped PMMA Films and Their Second Harmonic Generation for Optoelectronic Device Applications, ICOT-2004 {International Seminar}, NMU, Jalgaon, India, 2004.

73.   Negi, Y.S.,  Adhyapak, P.V., Goyal, R.K., Damkale, S.R., Islam, M., Aiyer, R.C., Preparation of Optical Grade m-Nitoaniline (m-NA) and PMMA Doped Single Crystals and Their Optoelectronic Properties, Proceedings APT-04, International Seminar, Kochin University, Kochin, India, Jan. 16-17, 2004.

74.   Negi, Y.S.,  Synthesis of Soluble Aromatic Polyureas Based on Hexafluoroisopropylidene (6F) and   Isopropylidene (IP) Group Containing Diamine and Aromatic Diisocyanates, Proceedings APT-04, International Seminar, Kochin University, Kochin, India, Jan. 16-17, 2004.

75.   Negi, Y.S., Goyal, R.K., Damkale, S.R.,Adhyapak, P.V., Islam, M., Aiyer, R.C., Preparation of Optical Grade Poled Polymer Films Based on m-Nitroaniline doped PMMA and Their Second Harmonic Generation for Optoelectronic Device Applications, Proceedings APT-04, International Seminar, Kochin University, Kochin, India, Jan. 16-17, 2004.

76.   Negi, Y.S.,  Sureshkumar, M.S., Goyal, R.K., Islam, M., Aiyer, R.C., Preparation and Properties of NLO Active meta-Nitroaniline Doped Recycled Polystyrene, Proc. National Conf.on Microwaves and Optoelectronics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India, Jun. 29-30, 2004.

77.   Negi, Y.S., Goyal, R.K., Damkale, S.R., Preparation, Morphology and Melt Flow Properties of PP/PE/Flame Retardant Inorganic Fillers for Nanocomposites, MRSI-2003, BARC, Mumbai, India, 2003.

78.   Negi, Y.S., Polyimide Alignment Layers for Antiferroelectric Liquid Crystal Display Devices, MRSI-2003, BARC, Mumbai, India, 2003.

79.   Negi, Y.S.,  Goyal, R.K., Damkale, S.R., Adhyapak, P.V., Synthesis and Properties of m-Nitroaniline (m-NA) Doped Optical Grade PMMA for Non-Linear Optics, MRSI-2003, BARC, Mumbai, India, 2003.

80.   Negi, Y.S., Adhyapak, P.V., Damkale, S.R., Preparation and Optical Properties of m-Nitroaniline (m-NA) based Single Crystal Using Solution Growth Technique, MRSI-2003, BARC, Mumbai, India, 2003.

81.   Negi, Y.S., Seth, T., Amalnerkar, D.P., Morphological Characterization of High Performance Polymers Using SEM Technique, MRSI-2003, BARC, Mumbai, India, 2003.

82.   Negi, Y.S., Synthesis and Characterization of Poly (Aryl Ether Ether Ketone) based on PAEK Acid Chloride, MRSI-2003, BARC, Mumbai, India, 2003.

83.   Negi, Y.S., Nanometric Thin Spin Coated Polyimide Alignment Layers for Antiferroelectric Liquid Crystal Cell Device, Proceeding 10^th National Conf.on Liquid Crystals, Bangalore, India, Oct. 9-11, 2003.

84.   Prasad, S.K., Sandhya, K.L., Rao, D.S.S., Negi, Y.S., Experimental Investigations on the Photoinduced Effects Near the SmecticA-Smectic C* Transitio, Proceeding 10^th National Conf.on Liquid Crystals, Bangalore, India, Oct. 9-11, 2003.

85.   Negi, Y.S., Goyal, R.K., Damkale, S.R., Adhyapak, P.V., Characterization of Fluorine and Non-fluorine Containing Polyimide Blends by Optical and Thermal Techniques, MRSI-2002, Hyderabad, India, 2002.

86.   Negi, Y.S., Adhyapak, P.V., Goyal, R.K.,  Damkale, S.R., Composites Based on Polyaniline / Polyvinyl   Alcohol Blend, MRSI-2002, Hyderabad, India, 2002. Negi, Y.S., Goyal, R.K., Damkale, S.R., and Adhyapak, P.V.,  Morphology and Melt Flow Properties of  Nylon 12-PET/p-HBA Blend, MRSI-2002, Hyderabad, India, 2002.

87.   Negi, Y.S., High Performance Polyimide Alignment Layers for Antiferroelectric Liquid Crystal       Display Devices, Procd. (HINDI) 2002 DMSRDL, Defence Lab, Hyderabad,India, 2002.

88.   Negi, Y.S., High Performance Polyimide Alignment Layers for Antiferroelectric Liquid Crystal       Display Cell Devices and Their Molecular Design’s Effect on Contrast, Double Hysteresis and      Memory Margin Properties. Proc. MRSI-2001, Science City, Calcutta, Jan. 31-Feb. 2, 2001.

89.   Negi, Y.S., High Performance Thermotropic Liquid Crystalline Polymer Based on PET/p-HBA and HNA/p-HBA, Proc. Materials Research Society of India (MRSI-2001-02), IICT and DMSRDL, Hyderabad (A.P.), Feb. 7- 9, 2001-02.

90.   Negi, Y.S., High Performance  Polyarylate Based on Dihydroxydiphenyl Sulfone (DHDPS) and Aromatic Diacid, Proc. Materials Research Society of India (MRSI-2001-02),    IICT and DMSRDL, Hyderabad (A.P.), Feb. 7- 9, 2001-02.

91.   Negi, Y.S., Goyal, R.K., S. R. Damkale and Adhyapak, P.V., Characterization of Fluorine and Non-fluorine Containing Polyimide Blends by Optical and Thermal Techniques, Proc. Materials Research Society of India (MRSI-2001-02),    IICT and DMSRDL, Hyderabad (A.P.), Feb. 7- 9, 2001-02.

92.   Negi, Y.S., Adhyapak, P.V.,  Goyal, R.K.,  Damkale, S.R., Composites Based on         Polyaniline/Polyvinyl Alcohol Blend, Proc. Materials Research Society of India (MRSI-2001-02),    IICT and DMSRDL, Hyderabad (A.P.), Feb. 7- 9, 2001-02.

93.   Negi, Y.S., Goyal, R.K., Damkale, S.R., Adhyapak, P.V., Morphology and Melt Flow Properties of Nylon 12-PET/p-HBA Blend, Proc. Materials Research Society of India (MRSI-2001-02) , IICT and DMSRDL, Hyderabad (A.P.), Feb. 7- 9, 2001-02.

94.   Negi, Y.S., Structure Property Relationship in Aromatic Polyimide/Polyamide Blends, Indian Science Congress Association, Pune University, Pune, Jan. 3–7, 2000.

95.   Negi, Y.S., High Performance Polymers for Alignment of the Antiferroelectric Liquid Crystal and         Development of the Prototype Antiferroelectric Liquid Crystal Device, National Conf.on Liquid Crystals, Univ. of  Mumbai, Mumbai, Dec. 28-30, 2000.

96.   Negi, Y.S., Synthesis and Characterization of  Soluble Polyureas based on 2,2 Bis(4-(4-Amino    phenoxy phenyl)) Hexafluoro propane and 2,2-Bis (Bis-(4-(4- Aminophenoxy phenyl)) Propane and Aromatic Diisocyanates, Proc. Materials  Research Society of India, (MRSI-2000), Vadodra and V. Vidyanagar, Gujarat, Feb. 3- 5, 2000.

97.   Negi, Y.S.,  Polyamide-imide Liquid Crystal Cell Device, Proc. 34^th Annual  Convention of Chemists, Delhi Univ., Delhi,India, Dec. 17-20, 1997.

98.   Negi, Y.S., Synthesis and Propereties of Fluorine and Non-Fluorine Containing Polyamides and         Copolyamides, Int. Symp. On Macromol., Soc. of Polym. Sci. and Indian Space Research Organization, Trivendrum, India, Jan. 11-13, 1995.

99.   Negi, Y. S., et al., Polyimide, Polyamide-imide and Polyamide Alignment Layers for          Antiferroelectric Liquid Crystal Devices and Their Effect on Electro-Optical Properties, Prep. 4^th Int. Polym. Sci. Conf., Yokohama, Japan, Nov. 29-Dec. 3, 1992.

100.                    Suzuki, Y., Yamakawa, N., Negi, Y.S.,  Hagiwara, T.,Kawamura, I.,  Yamamoto, N., Mori K.,          Yamada, Y., Antiferroelectric Liquid Crystal Compounds Having Unsaturated Chain Structure Adjacent to Chiral Centre, 3^rd  Conf. on Ferroelectric Liquid Crystals, ,Boulder, Colarado, USA, Jun. 24-28, 1991.

101.                    Suzuki, Y., Hagiwara, T., Kawamura, I., Negi, Y.S., Yamamoto, N., Mori, K.,  Yamada, Y., Kitazume, T., Fluorine Containing Chiral Synthons for Ferroelectric and Antiferroelectric Liquid Crystal Compounds and their Applications, 13^th Int. Symp. On Fluorine Chem., Ruhr Univ., Bochum, Germany, Sep. 1-6, 1991.

102.                    Kawamura, I., Suzuki, Y., Hagiwara, T., Negi, Y.S., Yamamoto, Y., Antiferroelectric liquid Crystal Materials, Proc. II Japan SAMPE (Soc. Adv. Mat. and  Process Engg.)  Symp., Chiba, Japan, Dec. 11-14, 1991.

103.                    Yamamoto, N., Yamada, Y., Mori, K., Nakamura, K., Orihara, H., Ishibashi, Y., Negi, Y.S., Hagiwara, T., Suzuki, Y., Kawamura, I., Switching Behaviour in Antiferroelectric Liquid Crystals Under an Electric Field, 16^th Japanese  Symp. on Liquid Crystals, Hiroshima Univ., Japan, Oct. 2-4, 1990.

104.                    Isozaki, T., Hagiwara, T., Negi, Y.S., Suzuki, Y., Kawamura, I., Yamada, Y., Yamamoto, N., Mori, K.           Nakamura, K., The Phase Transition of Antiferroelectric Liquid Crystals (I), 16^th Japanese Symp. on Liquid  Crystals, Hiroshima Univ., Japan, Oct. 2-4, 1990.

105.                    Hagiwara, T., Suzuki, Y., Negi, Y.S., Kawamura, I., Yamamoto, N., Yamada, Y., Mori, K., Alignment Recovery of Antiferroelectric Liquid Crystals Phase, 13^th  Liquid Crystal Conf., Brit. Columbia Univ., Vancouver, Canada, Jul. 22-27, 1990.

106.                    Hagiwara, T., Suzuki, Y., Aihara, Y., Sadamune, Y., Negi, Y.S., Kawamura, I., Yamada, Y., Yamamoto, N., Mori, K., Tristable Liquid Crystals (III), 15^th Japanese Symp. on Liquid Crystals, Osaka,  Japan, Oct. 12-14,  1989.

107.                    Yamawaki, M., Yamada, Y., Yamamoto, N., Mori, K., Hayashi, H., Suzuki, Y., Negi, Y.S., Hagiwara, T., Kawamura, I., Orihara, H., Ishibashi, Y., Electro-Optical Properties of Fluorine Containing           Ferroelectric Liquid Crystal Cells,  Proc. of the 9^th Int. Dis. Res. Conf., 16-18, Kyoto, Japan, 1989.

108.                    Negi, Y.S., Alignment Membranes for Ferroelectric Liquid Crystal Display Cells, Annual Seminar, Central Res. Dev. Lab., Showa Shell Co., Atsugi, Japan, Jul. 18, 1989.

109.                    Aihara, Y., Suzuki, Y., Hagiwara, T., Sadamune, Y., Negi, Y.S., Kawamura, I., Kitazume, T., Yamada, Y., Yamamoto N., Mori, K., Tristable Liquid Crystal (I), 15^th Japanese Symp. on Liquid Crystals, Osaka, Japan, Oct. 14, 1989.

110.                    Souma, Y., Negi, Y.S., Oyama, K., Synthesis of Sulfone Compounds, 57^th Annual Meet (Chem. Soc., Japan) Sendai, Japan, 1988.

111.                    Kakimoto, M., Negi, Y.S., Imai, Y., Synthesis and Properties of Aromatic Polyesters Containing  Tetraphenylthiophene Unit, 50^th Spring  Annual  Meet (Chem. Soc., Japan) Tokyo, Japan, Apr. 1985.

112.                    Negi, Y.S., Varma,D.S., Veena, Coplyester Fibres Effect of Structure on Properties, Symp.on Polymer Science, S. P. Univ.,V. Vidyanagar, Gujarat, India, Feb. 2-4, 1981.