2,380 research outputs found

    T. M. P. Mahadevan. Gaudapada, a study in early Advaita

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    Filliozat Jean. T. M. P. Mahadevan. Gaudapada, a study in early Advaita. In: Revue de l'histoire des religions, tome 142, n°2, 1952. p. 246

    Essays in Philosophy presented to Dr T. M. P. Mahadevan on his fiftieth Birthday

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    Bareau André. Essays in Philosophy presented to Dr T. M. P. Mahadevan on his fiftieth Birthday. In: Revue de l'histoire des religions, tome 166, n°1, 1964. p. 76

    Proposals for International Support to an Intercountry Cooperative Research Programme on the Water Buffalo

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    Report of P. Mahadevan, a consultant commissioned by TAC to prepare proposals for an international water buffalo program. Based on an analysis of the world distribution of water buffalo and their economic importance, and an assessment of current national research on buffalo nutrition, reproduction, breeding, health problems and production systems, the author identifies priority areas for research. Consideration of a number of institutional and organizational alternatives leads to the recommendation for an international network of cooperating national institutions for buffalo research. Agenda document presented at the seventeenth meeting of TAC, September 1977

    Not Available

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    Not AvailableIN a recent communication (Mahadevan 1959) attention was drawn to an interesting association of the pearl fish Fierasfer homei (Richardson) with the wing mussel Pteria sp., * * found in the Gulf of Mannar off Tuticorin. A re -examination of the pearl fish showed that the position of the vent is at the base of a line just behind pectoral origin and the origin of the dorsal is in a line above the middle of pectoral (Plate, 1, Fig. C). Further, other distinguishing characters of this fish described elsewhere in this account justified the earlier doubts (Mahadevan op. cit.) of the likelihood of its coming under Carapus (syn : Fierasfer) margaritiferae (Rendahl), a brief account of which is given by de Beaufort (1951) based on specimens collected from Pulu Punga, Pulu Missa, coast of Flores and Cape Jaubert N. W. Australia, mostly in association with the wing mussel or sometimes with a holothurian. Smith (1955), while reviewing the family Carapidae has mentioned the occurrence of C margaritiferae in South African waters also where three specimens, 75 -93 mm. in length, were ' taken from inside clams at Durban.' The data on two specimens of 63.5 and 85.0 mm. examined by the present author indicate differences in some of the characteristics as compared with the South African form described by Smith. In order to facilitate comparison of the Indian form with others occurring elsewhere a detailed description of the material in hand is given below.Not Availabl

    The Pearl fish Carapus margaritiferae (Rendahl), a new record for the Indian waters

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    IN a recent communication (Mahadevan 1959) attention was drawn to an interesting association of the pearl fish Fierasfer homei (Richardson) with the wing mussel Pteria sp.,** found in the Gulf of Mannar off Tuticorin. A re-examination of the pearl fish showed that the position of the vent is at the base of a line just behind pectoral origin and the origin of the dorsal is in a line above the middle of pectoral (Plate, 1, Fig. C). Further, other distinguishing characters of this fish described elsewhere in this account justified the earlier doubts (Mahadevan op. cit.) of the likelihood of its coming under Carapus (syn : Fierasfer) margaritiferae (Rendahl), a brief account of which is given by de Beaufort (1951) based on specimens collected from Pulu Punga, Pulu Missa, coast of Flores and Cape Jaubert N. W. Australia, mostly in association with the wing mussel or sometimes with a holothurian. Smith (1955), while reviewing the family Carapidae has mentioned the occurrence of C margaritiferae in South African waters also where three specimens, 75-93 mm. in length, were ' taken from inside clams at Durban.' The data on two specimens of 63.5 and 85.0 mm. examined by the present author indicate differences in some of the characteristics as compared with the South African form described by Smith. In order to facilitate comparison of the Indian form with others occurring elsewhere a detailed description of the material in hand is given below

    Just a few lines from my memory

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    Gulf of Mannar, My Friend A sliver stream pass the waters offshore gilt with sunbeam all over on whose enamelled waters I dived and saw how prettily the denizens moved and lived and how sweetly they moved and bred still Oh! my friend Mannar gulf still I adore you though eighteen years past since I bade thee good-bye Marine Zoology, Mandapam Camp, Mannar Gulf and Mahadevan Place-New Delhi, event UPSC selection in 1959 for Marine Zoologist post in CMFRI- I was leaving the hall after interview. An attendant emerging fro

    Flow-driven branching in a frangible porous medium

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    © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Derr, N. J., Fronk, D. C., Weber, C. A., Mahadevan, A., Rycroft, C. H., & Mahadevan, L. Flow-driven branching in a frangible porous medium. Physical Review Letters, 125(15), (2020): 158002, doi:10.1103/PhysRevLett.125.158002.Channel formation and branching is widely seen in physical systems where movement of fluid through a porous structure causes the spatiotemporal evolution of the medium. We provide a simple theoretical framework that embodies this feedback mechanism in a multiphase model for flow through a frangible porous medium with a dynamic permeability. Numerical simulations of the model show the emergence of branched networks whose topology is determined by the geometry of external flow forcing. This allows us to delineate the conditions under which splitting and/or coalescing branched network formation is favored, with potential implications for both understanding and controlling branching in soft frangible media.N. D. was partially supported by the NSF-Simons Center for Mathematical and Statistical Analysis of Biology at Harvard, Grant No. 1764269, and the Harvard Quantitative Biology Initiative. C. H. R. and N. D. were partially supported by the National Science Foundation under Grant No. DMS-1753203. C. H. R. was partially supported by the Applied Mathematics Program of the U.S. DOE Office of Science Advanced Scientific Computing Research under Contract No. DE-AC02-05CH11231. L. M. was partially supported by the National Science Foundation under Grants No. DMR-2011754 and No. DMR-1922321

    Dr S. R. Ranganathan : Reading from the Ramayana (chapters 31, 35 and 36) and from Rrahma's Hymn (chapter 117 of «Yuddhakandan) Dr T. M. P. Mahadevan, Swami Nikhilananda. T. : Readings from the Bhagavad Gita

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    Damais Louis-Charles. Dr S. R. Ranganathan : Reading from the Ramayana (chapters 31, 35 and 36) and from Rrahma's Hymn (chapter 117 of «Yuddhakandan) Dr T. M. P. Mahadevan, Swami Nikhilananda. T. : Readings from the Bhagavad Gita. In: Bulletin de l'Ecole française d'Extrême-Orient. Tome 48 N°2, 1957. pp. 693-696

    Augmenting the double pipe heat exchanger efficiency using varied molar Ag ornamented graphene oxide (GO) nanoparticles aqueous hybrid nanofluids

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    The optimization of heat transfer in heat exchanging equipment is paramount for the efficient management of energy resources in both industrial and residential settings. In pursuit of this goal, this empirical study embarked on enhancing the heat transfer performance of a double pipe heat exchanger (DPHX) by introducing silver (Ag)-graphene oxide (GO) hybrid nanofluids into the annulus of the heat exchanger. To achieve this, three distinct molar concentrations of Ag ornamented GO hybrid nanoparticles were synthesized by blending GO nanoparticles with silver nitrate at molarities of 0.03 M, 0.06 M, and 0.09 M. These Ag-GO hybrid nanoparticles were then dispersed in the base fluid, resulting in the formation of three distinct hybrid nanofluids, each with a consistent weight percentage of 0.05 wt%. Thorough characterization and evaluation of thermophysical properties were performed on the resulting hybrid nanomaterials and nanofluids, respectively. Remarkably, the most significant enhancement in heat transfer coefficient, Nusselt number, and thermal performance index (62.9%, 33.55%, and 1.29, respectively) was observed with the 0.09 M Ag-GO hybrid nanofluid, operating at a Reynolds number of 1,451 and a flow rate of 47 g/s. These findings highlight the substantial improvement in thermophysical properties of the base fluid and the intensification of heat transfer in the DPHX with increasing Ag molarity over GO. In summary, this study emphasizes the vital importance of optimizing the molarity of the material, which also plays a significant role in nanoparticle synthesis to achieve the optimal amplification of heat transfer

    Augmenting the double pipe heat exchanger efficiency using varied molar Ag ornamented graphene oxide (GO) nanoparticles aqueous hybrid nanofluids

    No full text
    The optimization of heat transfer in heat exchanging equipment is paramount for the efficient management of energy resources in both industrial and residential settings. In pursuit of this goal, this empirical study embarked on enhancing the heat transfer performance of a double pipe heat exchanger (DPHX) by introducing silver (Ag)-graphene oxide (GO) hybrid nanofluids into the annulus of the heat exchanger. To achieve this, three distinct molar concentrations of Ag ornamented GO hybrid nanoparticles were synthesized by blending GO nanoparticles with silver nitrate at molarities of 0.03 M, 0.06 M, and 0.09 M. These Ag-GO hybrid nanoparticles were then dispersed in the base fluid, resulting in the formation of three distinct hybrid nanofluids, each with a consistent weight percentage of 0.05 wt%. Thorough characterization and evaluation of thermophysical properties were performed on the resulting hybrid nanomaterials and nanofluids, respectively. Remarkably, the most significant enhancement in heat transfer coefficient, Nusselt number, and thermal performance index (62.9%, 33.55%, and 1.29, respectively) was observed with the 0.09 M Ag-GO hybrid nanofluid, operating at a Reynolds number of 1,451 and a flow rate of 47 g/s. These findings highlight the substantial improvement in thermophysical properties of the base fluid and the intensification of heat transfer in the DPHX with increasing Ag molarity over GO. In summary, this study emphasizes the vital importance of optimizing the molarity of the material, which also plays a significant role in nanoparticle synthesis to achieve the optimal amplification of heat transfer
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