Items where Author is "Krishna, P."

Article

Mirza, S. P. ; Krishna, P. ; Prabhakar, S. ; Vairamani, M. ; Giblin, D. ; Gross, Michael L. (2003) The kinetic method reveals secondary deuterium isotope effects on the proton affinity and gas-phase basicity of glycine and alanine methyl esters International Journal of Mass Spectrometry, 230 (2-3). pp. 175-183. ISSN 1387-3806

Prabhakar, S. ; Krishna, P. ; Kundu, A. ; Roy, Sujit ; Vairamani, M. (1999) Mass spectral study of substituted allyl aryl and allyl alkyl selenides and some analogous sulfides Rapid Communications in Mass Spectrometry, 13 (15). pp. 1564-1572. ISSN 0951-4198

Krishna, P. ; Prabhakar, S. ; Vairamani, M. (1999) Chiral recognition and the determination of optical purity of a-phenylethylamine using monosaccharide as a chiral selector under liquid secondary ion mass spectral conditions European Journal of Mass Spectrometry, 5 (6). pp. 485-488. ISSN 1469-0667

Krishna, P. ; Prabhakar, S. ; Vairamani, M. ; Manoharan, M. ; Jemmis, E. D. (1999) Chiral recognition and the determination of optical purity of some amino acid ester salts using monosaccharides as chiral selectors under liquid secondary ion mass spectral conditions Chemical Communications (13). pp. 1215-1216. ISSN 1359-7345

Krishna, P. ; Prabhakar, S. ; Vairamani, M. (1998) Differentiation of derivatized leucine and isoleucine by tandem mass spectrometry under liquid secondary ion mass spectral conditions Rapid Communications in Mass Spectrometry, 12 (20). pp. 1429-1434. ISSN 0951-4198

Prabhakar, S. ; Krishna, P. ; Vairamani, M. (1997) Acetone chemical ionization studies. Acetone chemical ionization studies-IX: Amino acids and nucleobases Rapid Communications in Mass Spectrometry, 11 (18). pp. 1945-1952. ISSN 0951-4198

Prabhakar, S. ; Krishna, P. ; Vairamani, M. (1997) Mass spectral study of acyclic diastereomers by electron impact-III: 2-bromo-3-acetoxy succinates and tartrate diacetates European Journal of Mass Spectrometry, 3 (6). pp. 415-425. ISSN 1469-0667

Sebastian, M. T. ; Krishna, P. (1987) X-ray diffraction effects from randomly twinned f.c.c. crystals undergoing transformation to the h.c.p. phase Acta Crystallographica Section B: Structural Science, 43 (5). pp. 409-415. ISSN 0108-7681

Sebastian, M. T. ; Krishna, P. (1987) X-ray investigation of the mechanisms of phase transformations in single crystals of ZnS, Zn_xCd_1-xS and Zn_xMn_1-xS (II). comparison of observed and calculated diffraction effects Crystal Research and Technology, 22 (8). pp. 1063-1072. ISSN 0232-1300

Sebastian, M. T. ; Narayanan, K. ; Krishna, P. (1987) X-ray diffraction effects from 2H crystals undergoing transformation to the 3C structure by the layer displacement mechanism Physica Status Solidi A, 102 (1). pp. 241-249. ISSN 0031-8965

Sebastian, M. T. ; Krishna, P. (1987) X-ray investigation of the mechanism of phase transformation in single crystals of ZnS, Zn_xCd_1-xS and Zn_xMn_1-xS (I). calculation of diffraction effects by a three parameter model Crystal Research and Technology, 22 (7). 929–941. ISSN 0232-1300

Sebastian, M. T. ; Krishna, P. (1987) Diffraction effects from h.c.p. crystals with random growth faults undergoing transformation to the f.c.c. phase by the deformation mechanism Physica Status Solidi A, 101 (2). pp. 329-337. ISSN 0031-8965

Sebastian, M. T. ; Krishna, P. (1986) One-dimensional disorder and solid-state structural transformations in ZnS, Zn_xCd_1-xS and Zn_xMn_1-xS The Physics Teacher, 28 . pp. 94-103. ISSN 0031-921X

Krishna, P. ; Sebastian, M. T. (1986) The mechanism of phase-transformations in polytypes Bulletin de Mineralogie, 109 . pp. 99-116. ISSN 0180-9210

Krishna, P. ; Jiang, S. -S. ; Lang, A. R. (1985) An optical and X-ray topographic study of giant screw dislocations in silicon carbide Journal of Crystal Growth, 71 (1). pp. 41-56. ISSN 0022-0248

Sebastian, M. T. ; Krishna, P. (1984) Mechanism of phase transformations in ZnS Pramana - Journal of Physics, 23 (3). pp. 395-403. ISSN 0304-4289

Sebastiak, M. T. ; Krishna, P. (1984) X-ray diffraction from a SiC crystal undergoing the 3c–6h solid state transformation by non-random microtwinning Physica Status Solidi A, 84 (2). pp. 401-409. ISSN 0031-8965

Sebastian, M. T. ; Krishna, P. (1984) Stacking faults and structural transformations in Zn_xMn_1-xS single crystals grown from vapour Journal of Crystal Growth, 66 (3). pp. 586-592. ISSN 0022-0248

Sebastian, M. T. ; Krishna, P. (1984) Structural disorder and solid state transformations in single crystals of Zn_xCd_1-xS and Zn_xMn_1-xS Bulletin of Materials Science, 6 (2). pp. 369-393. ISSN 0250-4707

Sebastian, M. T. ; Krishna, P. (1984) An X-ray diffraction study of faulting in single crystals of cubic ZnS grown from the vapour phase Philosophical Magazine A, 49 (6). pp. 809-821. ISSN 0141-8610

Sebastian, M. T. ; Krishna, P. (1983) The discovery of a 2H–6H solid state transformation in Zn_xCd_1-xS single crystals Solid State Communications, 48 (10). pp. 879-882. ISSN 0038-1098

Sebastian, M. T. ; Krishna, P. (1983) Mechanism of solid state transformations in single crystals of Zn_xCd_1-x Physica Status Solidi A, 79 (1). pp. 271-280. ISSN 0031-8965

Sebastian, M. T. ; Krishna, P. (1983) Anomalous photovoltaic effect and disorder in ZnS crystals Bulletin of Materials Science, 5 (3-4). pp. 257-266. ISSN 0250-4707

Pandey, D. ; Krishna, P. (1983) The origin of polytype structures Progress in Crystal Growth and Characterization, 7 (1-4). pp. 213-258. ISSN 0146-3535

Sebastian, M. T. ; Pandey, D. ; Krishna, P. (1982) X-ray diffraction study of the 2H to 3C solid state transformation in vapour grown single crystals of ZnS Physica Status Solidi A, 71 (2). pp. 633-640. ISSN 0031-8965

Pandey, Dhananjai ; Baronnet, A. ; Krishna, P. (1982) Influence of stacking faults on the spiral growth of polytype structures in mica Physics and Chemistry of Minerals, 8 (6). pp. 268-278. ISSN 0342-1791

Pandey, D. ; Krishna, P. (1982) Polytypism in close-packed structures Current Topics in Materials Science, 9 . pp. 415-491. ISSN 0165-1854

Pandey, D. ; Krishna, P. (1981) X-ray characterization of faults in close-packed structures Indian Journal of Pure and Applied Physics, 19 (9). pp. 796-802. ISSN 0019-5596

Baronnet, A. ; Pandey, Dhananjai ; Krishna, P. (1981) Application of the faulted matrix model to the growth of polytype structures in mica Journal of Crystal Growth, 52 (2). pp. 963-968. ISSN 0022-0248

Krishna, P. ; Jiang, S. S. ; Lang, A. R. (1981) An X-ray topographic study of giant screw dislocations in SiC Acta Crystallographica Supplement, A37 . p. 247.

Pandey, Dhananjai ; Lele, Shrikant ; Krishna, P. (1980) X-ray diffraction from one-dimensionally disordered 2H crystal undergoing solid state transformation to the 6H structure. I. The layer displacement mechanism Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences, 369 (1739). 435-449 . ISSN 1364-5021

Pandey, Dhananjai ; Lele, Shrikant ; Krishna, P. (1980) X-ray diffraction from one-dimensionally disordered 2H crystals undergoing solid state transformation to the 6H structure. II. The deformation mechanism Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences, 369 (1739). 451-461 . ISSN 1364-5021

Pandey, Dhananjai ; Lele, Shrikant ; Krishna, P. (1980) X-ray diffraction from one-dimensionally disordered 2H crystals undergoing solid state transformation to the 6H structure. III. Comparison with experimental observations on Sic Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences, 369 (1739). 463-477 . ISSN 1364-5021

Kuhlmann-wilsdorf, D. ; Pandey, Dhananjai ; Krishna, P. (1980) A mechanism for the origin of screw dislocation sequences, giant screw dislocations, and polytypism in platelet crystals Philosophical Magazine A, 42 (4). pp. 527-550. ISSN 0141-8610

Pandey, D. ; Krishna, P. (1978) Mechanism of the origin of giant screw dislocations in platelet crystals during growth Acta Crystallographica Supplement, A34 . p. 209.

Pandey, D. ; Pandey, H. D. ; Krishna, P. (1978) X-ray diffraction from crystals undergoing the 2H to 3C transformation by the insertion of deformation faults Acta Crystallographica Supplement, A34 . p. 276.

Pandey, Dhananjai ; Lele, S. ; Krishna, P. (1977) Mechanism of the 2H → 6H solid state transformation in SiC Journal of Crystal Growth, 42 . pp. 644-650. ISSN 0022-0248

Pandey, Dhananjai ; Krishna, P. (1977) An x-ray investigation of growth and deformation faults in a vapour grown 2h SiC crystal Journal of Crystal Growth, 42 . pp. 639-643. ISSN 0022-0248

Pandey, D. ; Krishna, P. (1977) X-ray diffraction study of stacking faults in a single crystal of 2H SiC Journal of Physics D: Applied Physics, 10 (15). pp. 2057-2068. ISSN 0022-3727

Segmüller, A. ; Krishna, P. ; Esaki, L. (1977) X-ray diffraction study of a one-dimensional GaAs–AlAs superlattice Journal of Applied Crystallography, 10 (1). pp. 1-6. ISSN 0021-8898

Pandey, D. ; Krishna, P. (1976) On the spiral growth of polytype structures in SiC from a faulted matrix. III. Polytypes based on the 15R and 4H structures Materials Science and Engineering, 26 (1). pp. 53-63. ISSN 0025-5416

Pandey, D. ; Krishna, P. (1976) X-ray diffraction from a 6H structure containing intrinsic faults Acta Crystallographica Section A, 32 (3). pp. 488-492. ISSN 0567-7394

Pandey, Dhananjai ; Krishna, P. (1975) A model for the growth of anomalous polytype structures in vapour grown SiC Journal of Crystal Growth, 31 . pp. 66-71. ISSN 0022-0248

Pandey, D. ; Krishna, P. (1975) A faulted matrix model for the spiral growth of polytype structures Physics Letters A, 51 (4). pp. 209-210. ISSN 0375-9601

Pandey, Dhananjai ; Krishna, P. (1975) Influence of stacking faults on the growth of polytype structures, I. Cadmium iodide Poly-types Philosophical Magazine, 31 (5). pp. 1113-1132. ISSN 0031-8086

Pandey, Dhananjai ; Krishna, P. (1975) Influence of stacking faults on the growth of polytype structures, II. Silicon carbide polytypes Philosophical Magazine, 31 (5). pp. 1133-1148. ISSN 0031-8086

Pandey, D. ; Krishna, P. (1975) On the spiral growth of polytype structures in SiC from a faulted matrix I. Polytypes based on the 6H structure Materials Science and Engineering, 20 . pp. 243-249. ISSN 0025-5416

Pandey, D. ; Krishna, P. (1975) The spiral growth of polytype structures from a faulted matrix Acta Crystallographica Supplement, A31 . p. 293.

Krishna, P. (1972) Structural changes produced in SiC crystals by annealing Acta Crystallographica Supplement, A28 . p. 116.

Krishna, P. ; Marshall, R. C. (1971) Direct transformation from the 2H to the 6H structure in single-crystal silicon carbide Journal of Crystal Growth, 11 (2). 147-150 . ISSN 0022-0248

Krishna, P. ; Marshall, R. C. (1971) The structure, perfection and annealing behaviour of SiC needles grown by a VLS mechanism Journal of Crystal Growth, 9 . 319-325 . ISSN 0022-0248

Krishna, P. ; Marshall, R. C. ; Ryan, C. E. (1971) The discovery of a 2H-3C solid state transformation in silicon carbide single crystals Journal of Crystal Growth, 8 (1). pp. 129-131. ISSN 0022-0248

Rai, Kailash Nath ; Srivastava, O. N. ; Krishna, P. (1970) Direct observation of recrystallization and structural transformations in ZnS films under an electron microscope Philosophical Magazine, 21 (174). pp. 1247-1253. ISSN 1478-6435

Chandrasekharaiah, M. N. ; Krishna, P. (1969) The structure and growth of hollow conical single crystals of cadmium sulphide Journal of Crystal Growth, 5 (3). pp. 213-215. ISSN 0022-0248

Rai, K. N. ; Srivastava, O. N. ; Krishna, P. (1969) Periodic micro-twinning during recrystallization of ZnS films Bulletin of the American Physical Society, 14 . p. 1187. ISSN 0003-0503

Rai, K. N. ; Krishna, P. (1969) Periodic occurrence of stacking faults and polytypism in certain close-packed crystal structures Indian Journal of Pure & Applied Physics, 7 . pp. 333-335. ISSN 0019-5596

Rai, Kailash Nath ; Krishna, P. (1968) Distribution of stacking faults in zinc sulphide crystals grown from the vapour Journal of Crystal Growth, 3-4 . 741-746 . ISSN 0022-0248

Rai, K. N. ; Krishna, P. (1968) Polytypism as a high-order transformation in crystals Indian Journal of Pure & Applied Physics, 6 . pp. 118-121. ISSN 0019-5596

Verma, Ajit Ram ; Krishna, P. ; Otte, H. M. (1967) Polymorphism and polytypism in crystals Physics Today, 20 (3). p. 111. ISSN 0031-9228

Krishna, P. ; Verma, Ajit Ram (1966) Crystal-polymorphism in one dimension Physica Status Solidi B, 17 (2). pp. 437-477. ISSN 0370-1972

Verma, A. R. ; Krishna, P. ; Srivastava, O. N. (1966) One dimensional disorder and polytypism in crystals Acta Crystallographica Supplement, 21 . pp. 187-188.

Krishna, P. ; Verma, Ajit Ram (1965) On the deduction of silicon-carbide polytypes from screw dislocations Zeitschrift für Kristallographie, 121 (1). pp. 36-54. ISSN 0044-2968

Krishna, P. ; Verma, A. R. (1964) A novel determination of the structure of an anomalous polytype of silicon carbide Acta Crystallographica, 17 (1). pp. 51-57. ISSN 0365-110X

Krishna, P. ; Verma, Ajit Ram (1963) Anomalies in silicon carbide polytypes Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences, 272 (1351). pp. 490-502. ISSN 1364-5021

Verma, A. R. ; Krishna, P. (1963) Dislocations and polytypism in silicon carbide Journal of Scientific & Industrial Research, 22 . pp. 268-283. ISSN 0022-4456

Krishna, P. ; Verma, A. R. (1963) A unique transformation of structure in silicon carbide Indian Journal of Pure & Applied Physics, 1 . pp. 242-248. ISSN 0019-5596

Krishna, P. ; Verma, Ajit Ram (1962) An X-ray diffraction study of silicon carbide structure types [(33)_n34]₃R Zeitschrift fÜr Kristallographie, 117 (1). pp. 1-15. ISSN 0044-2968

Krishna, P. ; Verma, A. R. (1962) A new polytype of silicon carbide, 57R. Its structure and growth Acta Crystallographica, 15 (4). pp. 383-387. ISSN 0365-110X