2,047 research outputs found
C. C. Mehta
No full textOn the life and works of Chandravadan Chimanlal Mehta, b. 1901, Gujarati author
NANOTECHNOLOGY: RISK, ETHICS AND LAW
No full textList of figures, tables and boxes -- List of contributors -- Preface and acknowledgements -- List of acronyms and abbreviations -- 1. Introduction: the challenge of nanotechnologies / Geoffrey Hunt and Michael D. Mehta -- Pt. One. Introducing nanotechnology -- 2. Nanotechnology: from 'wow' to 'yuck'? / Kristen Kulinowski -- 3. Nanotechnology: from Feynman to funding / K. Eric Drexler -- 4. Microsystems and nanoscience for biomedical applications: a view to the future / Linda M. Pilarski, Michael D. Mehta, Timothy Caulfield, Karan V.I.S. Kaler and Christopher J. Backhouse -- 5. Nanotechnoscience and complex systems: the case for nanology / Geoffrey Hunt -- Pt. Two. Regional developments -- 6. Nanotechnologies and society in Japan / Matsuda Masami, Geoffrey Hunt and Obayashi Masayuki -- 7. Nanotechnologies and society in the USA / Kirsty Mills -- 8. Nanotechnologies and society in Europe / Geoffrey Hunt -- 9. Nanotechnologies and society in Canada / Linda Goldenberg -- Pt. Three. Benefits and risks -- 10. From biotechnology to nanotechnology: what can we learn from earlier technologies? / Michael D. Mehta -- 11. Getting nanotechnology right the first time / John Balbus, Richard Denison, Karen Florini and Scott Walsh -- 12. Risk management and regulation in an emerging technology / Roland Clift -- 13. Nanotechnology and nanoparticle toxicity: a case for precaution / C. Vyvyan Howard and December S.K. Ikah -- 14. The future of nanotechnology in food science and nutrition: can science predict its safety? / Árpád Pusztai and Susan Bardocz -- Pt. Four. Ethics and public understanding -- 15. The global ethics of nanotechnology / Geoffrey Hunt -- 16. Going public: risk, trust and public understanding of nanotechnologies / Julie Barnett, Anna Carr and Roland Clift -- 17. Dwarfing the social? Nanotechnology lessons from the biotechnology front / Edna F. Einsiedel and Linda Goldenberg -- Pt. Five. Law and regulation -- 18. Nanotechnologies and the law of patents: a collision course / Siva Vaidhyanathan -- 19. Nanotechnologles and civil liability / Alan Hannah and Geoffrey Hunt -- 20. Nanotechnologies and the ethical conduct of research involving human subjects / Lorraine Sheremeta -- 21. Nanotechnologies and corporate criminal liability / Celia Wells and Juanita Elias -- Pt. Six. Conclusion -- 22. What makes nanotechnologies special? / Michael D. Mehta and Geoffrey Hunt -- Appendix: measurement scales and glossary -- Inde
Mobilities in Religious Knowledge: Phiroz Mehta and the Logics of Transreligiosity in 1970s–80s South London
No full textThis paper examines transreligiosity in the context of the transmission of South Asian concepts of spirituality to the UK in the 20th century. Between the 1920s and 1990s, Indian teacher and author Phiroz Mehta (1902–1994) crossed borders in a colonial and postcolonial shuttling between India and the UK but also transgressed conceptual and practice borders of religion, teaching Indian religious concepts to post-Christian spiritual seekers in 1970s–80s South London. Mehta cultivated an elasticity between many religious and philosophical traditions, recognising the post-institutional fatigue of subjects who sought alternative forms of ‘belonging without believing’. Privileging the domestic space for teaching, as well as transitory ‘camp’ gatherings in the UK and Germany, Mehta often operated in the social margins, combining teachings from Hinduism, Buddhism, and Christianity with Zoroastrianism, Judaism (specifically Kabbalah), and Daoism. He offered his tutees the freedom to practice religion in whatever way they chose by drawing on a broad range of traditions concurrently to create a transreligiosity. This paper examines Panagiotopoulos and Roussou’s ‘transgressional webs of practising individualised forms of alternative spirituality’ in relation to Mehta’s followers in the 1970s-1980s and asks how transreligiosity relates to other theoretical analyses, such as religious exoticism, bricolage, religious appropriation, cultural re-articulation or assemblage. This paper focuses on qualitative interviews with original members of the Mehta community conducted between 2021 and 2022.</p
Design and development of a mechatronic training simulator for adult ECMO
No full textWidespread adoption of Extracorporeal Membrane Oxygenation (ECMO) in adults has been limited by unfamiliarity with the procedure, including cannulation and safe handling of the ECMO equipment. We present the design and development of a mechatronic training simulator for ECMO that can help medical professionals acquire the needed skills, gain familiarity, and reduce errors by practicing before performing the procedure on real patients. The trainer is designed as an ultrasound-compatible, wholesome simulator with realistic components such as synthetic blood vessels, cannulation pads, and a color-changing blood simulant to simulate oxygenation and deoxygenation. The simulator is integrated with a mathematical model of human physiology to simulate real-time patient vitals and training scenarios, and to control the trainer hardware. We present results related to successful cannulation under ultrasound scanning and a simple patient scenario of hypovolemia.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-05-01The student, Iti Mehta, accepted the attached license on 2019-04-24 at 10:58.The student, Iti Mehta, submitted this Thesis for approval on 2019-04-24 at 11:11.This Thesis was approved for publication on 2019-04-24 at 12:45.DSpace SAF Submission Ingestion Package generated from Vireo submission #13873 on 2019-08-22 at 15:08:02Made available in DSpace on 2019-08-23T20:36:09Z (GMT). No. of bitstreams: 2
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Previous issue date: 2019-04-24Embargo set by: Seth Robbins for item 112203
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Engineering Structural And Magnetic Properties Of Mgo.95mn O.o5fe2o4 Thin Films Using 200 Mev Au Ions
No full textPulsed laser deposited thin films of Mgo.95Mn o.05Fe2O4 ferrite were irradiated by 200 MeV Au14+ with a maximum dose up to 1 × 1012 ions/cm2. The as-deposited and irradiated thin films are investigated using X-ray diffraction (XRD), Raman Spectroscopy, Field emission electron microscopy (FESEM) and dc magnetization measurements. XRD and Raman spectroscopy measurements reflect the cubic spinel structure of films before and after irradiation. FESEM measurements demonstrate that films are composed of nano rods and nanocrystalline grains. Magnetic hysteresis loop measurements reveal that all the films have ferrimagnetic ordering at room temperature with enhancement in the coercive field and remnant magnetization due to irradiation. © 2009 The Ceramic Society of Japan. All rights reserved.1171365685688Brabers, V.A.M., (1995) Handbook of Magnetic Materials, 8. , Ed. by K. H. J. Buschow, Elsevier, AmsterdamBhargava, S.C., Zeman, N., (1980) Phys. Rev. B, 21, p. 1717Muralidharan, K., Srivastava, J.K., Moratha, V.R., Vijayaraghavan, R.J., (1985) Phys. C, 18, p. 5897Brand, R.A., Lauer, J., Herlach, D.M., (1984) J. Phys, F14Dormann, J.L., Nogues, M., (1990) J. Phys. Condense Matter, 2, p. 1223Dormann, J.L., Harfaouni, M.E.I., Nogues, M., Love, J., (1987) J. Phys. C, 20, pp. L161Thompson, M.W., (1969) Defects and Radiation Damage in Metals, , Cambridge University Press, CambridgeNeumeier, J.J., Hundley, M.F., Thompson, J.D., Heffner, R.H., (1995) Phys. Rev. B, 52, pp. R7006Ogale, A.S., Shinde, S.R., Kulkarni, V.N., Higgins, J., Choudhary, R.J., Kundaliya, D.C., Polleto, T., Venkatesan, T., (2004) Phys. Rev. B, 69, p. 235101S. B. Ogale, K. Ghosh, J. Y. Gu, R. Shreekala, S. R. Shinde, M. Downes, M. Rajeswari, R. P. Sharma, R. L. Green, TVenkatesan, Ramesh, R., Bathe, R., Patil, S.I., Kumar, R., Arora, S.K., Mehta, G.K., (1988) J. Appl. Phys, 84, p. 6255Sharma, S.K., Kumar, R., Kuma, V.V.S., Knobel, M., Reddy, V.R., Gupta, A., Singh, M., (2006) Nucl. Instr. and Meth. in Phys. Res. B, 248, pp. 37-11S. Kumar, S. K. Sharma, R. J. Alimuddin, D. M. Choudhary, Phase and R. Kumar, Nucl. Instr. and Meth. in Phys. Res. B, 266, 1741-1748 (2008)Studer, F., Toulmonde, M., (1992) Nucl. Instrum. Methods, B, 65, p. 560Houpert, C., Studer, F., Groult, D., Toulmonde, M., (1989) Nucl. Instrum. Methods B, , 39, 720Y723R. Kumar, S. B. Samantra, S. K. Arora, A. Gupta, D. Kanjilal, R. Pinto and A. V. Narlikar, Solid State Commun., 106[12], 805Y810 (1998)Kumar, R., Arora, S.K., Kanjilal, D., Mehta, G.K., Bache, R., Date, S.K., Shinde, S.R., Patil, S.I., (1999) Radiat. Eff. Defects Solids, 147, p. 187Komine, T., Mitsui, Y., Shiikj, K., (1995) J. Appl. Phys, 78 (12), p. 7220Turilli, G., Baooluzi, A., Lutennti, M., Tareti, L., (1992) J. Magn. Magn. Mater, 104-107, p. 114
Magnetic Study Of Nanocrystalline Ferrites And The Effect Of Swift Heavy Ion Irradiation
No full text100 MeV Si+7 irradiation induced modifications in the structural and magnetic properties of Mg0.95Mn0.05Fe 2O4 nanoparticles have been studied by using X-ray diffraction, Mössbauer spectroscopy and a SQUID magnetometer. The X-ray diffraction patterns indicate the presence of single-phase cubic spinel structure of the samples. The particle size was estimated from the broadened (311) X-ray diffraction peak using the well-known Scherrer equation. The milling process reduced the average particle size to the nanometer range. After irradiation a slight increase in the particle size was observed. With the room temperature Mössbauer spectroscopy, superparamagnetic relaxation effects were observed in the pristine as well as in the irradiated samples. No appreciable changes were observed in the room temperature Mössbauer spectra after ion irradiation. Mössbauer spectroscopy performed on a 12 h milled pristine sample (6 nm) confirmed the transition to a magnetically ordered state for temperatures less than 140 K. All the samples showed well-defined magnetic ordering at 5 K, whereas, at room temperature they were in a superparamagnetic state. From the magnetization studies performed on the irradiated samples, it was concluded that the saturation magnetization was enhanced. This was explained on the basis of SHI irradiation induced modifications in surface states of the nanoparticles. © Springer 2005.1601-4143156Thompson, M.W., (1969) Defects and Radiation Damage in Metals, , Cambridge University Press, CambridgeStuder, F., Pascard, H., Groult, D., Houpert, C., Nguyen, N., Toulemonde, M., (1989) Nucl. Instrum. Methods, B, 32, p. 389Meftah, A., Merrien, N., Nguyen, N., Studer, F., Pascard, H., Toulemonde, M., (1991) Nucl. Instrum. Methods, B, 59-60, p. 605Studer, F., Toulemonde, M., (1992) Nucl. Instrum. Methods, B, 65, p. 560Pascard, H., Studer, F., (1997) J. Phys., 4, pp. C1-211Studer, F., Toulmonde, M., (1992) Nucl. Instrum. Methods, B, 65, p. 560Houpert, C., Studer, F., Groult, D., Toulmonde, M., (1989) Nucl. Instrum. Methods, B, 39, pp. 720-723Kumar, R., Samantra, S.B., Arora, S.K., Gupta, A., Kanjilal, D., Pinto, R., Narlikar, A.V., (1998) Solid State Commun., 106 (12), pp. 805-810Kumar, R., Arora, S.K., Kanjilal, D., Mehta, G.K., Bache, R., Date, S.K., Shinde, S.R., Patil, S.I., (1999) Radiat. Eff. Defects Solids, 147, p. 187Papian, W.N., (1995) Proceeding of Metal Powder Association, 2, p. 183. , LondonHeck, C., (1974) Magnetic Materials and Their Applications, , Butterworth, LondonDorman, J.L., Fiorani, D., (1992) Magnetic Properties of Fine Particles, , North-Holland, AmsterdamLu, L., Sui, M.L., Lu, K., (2000) Science, 287, p. 1463Raj, K., Moskowitz, R., Casciari, R., (1995) J. Magn. Magn. Mater., 149, p. 174Ozaki, M., (1989) Mater. Res. Bull., 14, p. 35Gleiter, H., (1992) Nanostruct. Mater., 1, p. 1Verma, A., Goel, T.C., Mendiratta, R.G., (2000) Mater. Sci. Technol., 16, p. 712Kim, Y.I., Kim, D., Lee, C.S., (2003) Physica B, 337, pp. 42-51Rath, C., Mishra, N.C., Anand, S., Das, R.P., Sahu, K.K., Upadhyay, C., Verma, H.C., (2000) Appl. Phys. Lett., 76 (4), p. 475Shinde, S.R., Bhagwat, A., Patil, S.I., Ogale, S.B., Mehta, G.K., Date, S.K., Marest, G., (1998) J. Magn. Mater., 186, p. 342Brand, R.A., Lauer, J., Herlach, D.M., (1984) J. Phys., F14, p. 55Cullity, B.D., (1978) Elements of X-ray Diffraction, , Addison-Wesely, Reading, MassachusettsDeepthy, A., Rao, K.S.R.K., Bhat, H.L., Kumar, R., Ashoken, K., (2001) J. Appl. Phys., 89, p. 6560Basavraj, A., Jali, V.M., Lagare, M.T., Kini, N.S., Umarji, M., Kumar, R., Arora, S.K., Kanjilal, D., (2002) Nucl. Instrum. Methods, B, 187, p. 87Bathe, R., Date, S.K., Shinde, S.R., Saraf, L.V., Ogale, S.B., Patil, S.I., Kumar, R., Mehta, G.K., (1998) J. Appl. Phys., 83, p. 7174Rondinone, A.J., Samia, A.C.S., Zhang, Z.J., (2001) J. Phys. Chem., B, 105, p. 7967Rondinone, A.J., Samia, A.C.S., Zhang, Z.J., (2000) Appl. Phys. Lett., 76, p. 3624Kodama, R.H., Berkowitz, A.E., (1999) Phys. Rev., B59, p. 6321Smit, Wijn, H.P.J., (1959) Ferrites, , Gloeilampenfabriken, Eindhoven, Hollan
Optimal Bioeconomic Management Strategies for Prevention and Control of Invasive Alien Species
No full textPaper removed by author. Please see the current version, available online January 8, 2007: Mehta, S.V. et al. Optimal detection and control strategies for invasive species management. Ecological Economics (2007), doi:10.1016/j.ecolecon.2006.10.024Environmental Economics and Policy,
Design and implementation of a phase locked loop for high-speed serial links
No full textThe student, Rushabh Mehta, accepted the attached license on 2016-04-25 at 13:40.The student, Rushabh Mehta, submitted this Thesis for approval on 2016-04-25 at 13:46.This Thesis was approved for publication on 2016-04-27 at 14:52.DSpace SAF Submission Ingestion Package generated from Vireo submission #9475 on 2016-07-07 at 13:50:45Made available in DSpace on 2016-07-07T20:27:59Z (GMT). No. of bitstreams: 2
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Previous issue date: 2016-04-27Recent advances in the semiconductor industry and process technology scaling have increased the demand for fast, robust computing. The thirst for high-processing, low power ICs is ever increasing. This has pushed the demand for high data rates in wireless and wireline communication systems in the multi-Gbps range. With higher data rates, the I/O links need to scale proportionally. However, the I/O channel bandwidth has not scaled appropriately making it the biggest bottleneck in high-speed links. Parallel links have not been able to match this increasing system performance due to issues such as crosstalk, timing skew and packaging costs. Thus there is a need for high-speed serial links. For high-speed transmission of data, there arises a need for high-speed on chip clocking circuits making the use of Phase-Locked Loops (PLLs) imperative.
This thesis includes an overview of high-speed links along with the need for PLLs. An in-depth understanding of PLL theory, loop dynamics and behavioral and transistor level simulation follows. Performance metrics such as phase noise, random jitter and deterministic jitter are discussed. Finally, this thesis concludes with an insight into All Digital Phase-Locked Loops (ADPLLs).Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2018-05-01Embargo set by: Seth Robbins for item 93174
Lift date: 2018-07-07T20:28:14Z
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Effect Of 200 mev Ag15+ Ion Irradiation On Structural And Magnetic Properties Of Mg0.95mn0.05fe2o4 Ferrite Thin Film
No full textNanocrystalline Mg0.95Mn0.05Fe2O4 ferrite thin films, prepared by pulsed laser deposition technique on a glass substrate coated with indium tin oxide, are irradiated with 200 MeV Ag15+ ions at different fluence values in the range from 1 × 1011 to 1 × 1012 ions/cm2. The as-deposited and irradiated thin films are investigated using X-ray diffraction, dc magnetization and atomic force microscopy techniques. X-ray diffraction analysis of the as-deposited as well as irradiated thin film indicates the single phase cubic structure as the main composition. The crystallite size evaluated from Scherrer's equation is found to be decreased from 26 nm for as-deposited thin films to 17 nm for irradiated at a fluence of 1 × 1012 ions/cm2. The decrease in crystallite size in all the thin film samples after irradiation indicates a distortion in the lattice structure caused by stress-induced defects. The zero-field-cooled (ZFC) and field-cooled (FC) magnetizations have been recorded in a low field of 100 Oe and they show a typical behavior of superparamagnetic particles. This is further supported by the magnetization hysteresis (M-H) curve taken at 300 K, for the as-deposited thin film, which shows zero coercivity and remanence. The blocking temperatures calculated from the maxima of ZFC are found to decrease with the increase in irradiation fluence, which is consistent with XRD results. © 2009 Elsevier B.V. All rights reserved.20317-1827072711Dash, J., Prasad, S., Venkataramani, N., Kishan, P., Kumar, N., Kulkarani, S.D., Date, S.K., (1999) J. Appl. Phys., 86, p. 3303Acarya, B.R., Krishan, R., Prasad, S., Venkataramani, N., Ajan, A., Shringi, N., (1994) Appl. Phys. Lett., 64, p. 1579Morisako, A., Matsumoto, M., Naoe, M., (1998) IEEE Trans. Magn., 24, p. 3024Hylton, T.L., Parker, M.A., Howard, J.K., (1992) Appl. Phys. Lett., 61, p. 867Sui, X., Kryder, M.H., (1993) Appl. Phys. Lett., 63, p. 1582Cho, H.S., Kim, M.H., Kim, H.J., (1994) J. Mater. Res., 9 (9), p. 2425Venzke, S., van Dover, R.B., Philips, J.M., Gyorgy, E.M., Siegrist, T., Chen, C.H., Werder, D., Opila, R., (1996) J. Mater. Res., 11 (5), p. 1187Kumar, R., Wasi Khan, M., Srivastava, J.P., Arora, S.K., Sofin, R.G.S., Choudhary, R.J., Shevets, I.V., (2006) J. Appl. Phys., 100, p. 100703Chrisey, D.B., Hubler, G.K., (1994) Pulsed Laser Deposition of Thin Films, , Wiley, New YorkNewman, H.S., Chrisey, D.B., Horwitz, J.S., Weaver, B.D., Reeves, M.E., (1991) IEEE Trans. Magn., 27, p. 2540Cotell, C.M., Chrisey, D.B., Grabowski, K.S., Sprague, J.S., Gossett, C.R., (1992) J. Biomaterials, 3, p. 87Carosella, C.A., Chrisey, D.B., Lubitz, P., Horwitz, J.S., Dorsey, P., Seed, R., Vitoria, C., (1992) J. Appl. Phys., 71, p. 5107Williams, C.M., Chrisey, D.B., Lubitz, P., Grabowski, K.S., Cotell, C.M., (1994) J. Appl. Phys., 75, p. 1676Neumeier, J.J., Hundley, M.F., Thompson, J.D., Heffner, R.H., (1995) Phys. Rev. B, 52, pp. R7006Ogale, A., Shinde, S.R., Kulkarani, V.N., Higgins, J., Choudhary, R.J., Kundaliya, D.C., Pelleto, T., Venkatesan, T., (2004) Phys. Rev. B, 69, p. 235101Ogale, S.B., Ghosh, K., Gu, J.Y., Shreekala, R., Shinde, S.R., Downes, M., Rajeswari, M., Mehta, G.K., (1988) J. Appl. Phys., 84, p. 6255Studer, F., Toulmonde, M., (1992) Nucl. Instrum. Methods B, 65, p. 560Houpert, C., Studer, F., Groult, D., Toulmonde, M., (1989) Nucl. Instrum. Methods B, 39, pp. 720Y723Kumar, R., Samantra, S.B., Arora, S.K., Gupta, A., Kanjilal, D., Pinto, R., Narlikar, A.V., (1998) Solid State Commun., 106 (12), pp. 805Y810Kumar, R., Arora, S.K., Kanjilal, D., Mehta, G.K., Bache, R., Date, S.K., Shinde, S.R., Patil, S.I., (1999) Radiat. Eff. Defects Solids, 147, p. 187Studer, F., Houpert, C.h., Groult, D., Fan, J.Y., Meftah, A., Toulemonde, M., (1993) Nucl. Instrum. Methods B, 82, p. 9
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