Zobrazeno 1 - 10
of 47
pro vyhledávání: '"V. S. Tiwari"'
Autor:
Manoj Kumar Singh, V. S. Tiwari
Publikováno v:
Crystal Growth & Design. 15:3220-3234
We report a computational approach to elucidate the role of external growth parameters, additives, solvents, and their concentration to predict the steady-state crystal growth morphology. The developed growth rate expression relates the kinetic and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fcf217dec3904f4f1f2230a0bb2fb4f
https://doi.org/10.1021/acs.cgd.5b00346
https://doi.org/10.1021/acs.cgd.5b00346
Autor:
V. S. TIWARI
Publikováno v:
MAUSAM. 50:203-210
Regular ozone profile measurement over Antarctica has been made by India Meteorological Department since 1987 at Dakshin Gangotri and later at Maitri (70.7°S, 11.7°E) since 1990 with the help of Indian electro-chemical ozone sonde. Surface ozone me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23d771883c542a021b6711ce4d7748f3
https://doi.org/10.54302/mausam.v50i2.1848
https://doi.org/10.54302/mausam.v50i2.1848
Autor:
V. S. TIWARI, S. PESHIN
Publikováno v:
MAUSAM. 46:155-162
ABSTRACT. Concentration of ozone near the ground has been recorded at Pune (India) since 1972 with the help of a continuous surface ozone recorder using electro-chemical sensor. The analysis of the records of winter season indicates a sharp rise in o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c8f525c89434cbf34e6fb8a0c875305
https://doi.org/10.54302/mausam.v46i2.3222
https://doi.org/10.54302/mausam.v46i2.3222
Publikováno v:
Journal of the American Ceramic Society. 77:1813-1818
Ba[sub 1[minus]x]Ca[sub x]TiO[sub 3] powders have been prepared using a novel route involving solid-state reaction in a mixture of Ba[sub 1[minus]x]Ca[sub x]CO[sub 3] and TiO[sub 2]. The Ba[sub 1[minus]x]Ca[sub x]CO[sub 3] precursors used in this met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3436bb7ba7fa675f20cbbf8a8f379d27
https://doi.org/10.1111/j.1151-2916.1994.tb07055.x
https://doi.org/10.1111/j.1151-2916.1994.tb07055.x
Autor:
Dhananjai Pandey, V. S. Tiwari
Publikováno v:
Journal of the American Ceramic Society. 77:1819-1824
Ferroelectric phase transition in (Ba,Ca)TiO[sub 3] ceramics has been investigated using dielectric measurements. It is shown that samples prepared using (Ba,Ca)CO[sub 3] precursors exhibit diffuse phase transition (DPT) while those prepared by the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00ebee284c9cc7d1bbd3b7e8490036f2
https://doi.org/10.1111/j.1151-2916.1994.tb07056.x
https://doi.org/10.1111/j.1151-2916.1994.tb07056.x
Autor:
Rachna Selvamani, Gurvinderjit Singh, Vasant Sathe, H. S. Patel, V. S. Tiwari, Alka B. Garg, R. Mittal, R. Mukhopadhyay
Publikováno v:
AIP Conference Proceedings.
Raman spectroscopy of (1‐x) NBT‐xBiCrO3 solid solutions was carried at room temperature. In addition to well known Raman modes two additional bands near 770 and 835 cm−1 were observed. The intensity of these bands increased gradually with incre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52d280382fff916f65c3c4401f626840
https://doi.org/10.1063/1.3606106
https://doi.org/10.1063/1.3606106
Publikováno v:
Bulletin of Materials Science. 15:391-402
A brief overview of the materials and processes for making ceramic capacitors based on BaTiO3 and relaxor ferroelectric compositions is presented with special emphasis on more recent developments.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb24ed30405ec430e483a26551431811
https://doi.org/10.1007/bf02745288
https://doi.org/10.1007/bf02745288
Autor:
V. S. TIWARI
Publikováno v:
MAUSAM. 43:65-70
Variations in ozone amounts have been studied using data obtained with Dobson spectrophotometers during 1966-1988 at Srinagar, New Delhi, Pune and Kodaikanal. Yearly average values of total ozone , and its vertical distribution by the Umkehr method i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13f3997d855fb95b0092289490c2596e
https://doi.org/10.54302/mausam.v43i1.3319
https://doi.org/10.54302/mausam.v43i1.3319
Publikováno v:
Physica C: Superconductivity and its Applications. 184:135-143
A new method for the synthesis of nearly single phase 2223 in Bi1.6Pb0.4Sr2Ca2Cu3Oy composition within 72 h of total heat treatment, using coprecipitates of (1) 0.2 Pb, Ca, Sr as carbonates and (2) 1.6 Bi, 3 Cu as oxalate, is reported. Samples prepar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd3bdf81416f799c074137041c059e1c
https://doi.org/10.1016/0921-4534(91)91510-b
https://doi.org/10.1016/0921-4534(91)91510-b
Publikováno v:
Physica B: Condensed Matter. 174:112-116
Profile analysis of neutron diffraction data on Ba0.88Ca0.12TiO3 samples shows that Ca can enter either Ba site exclusively or both Ba and Ti sites depending on the method of preparation. Nature of structural phase transition has been examined in sam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ba1ec3ee7b6ab8234e6247fb12b2a5f
https://doi.org/10.1016/0921-4526(91)90588-6
https://doi.org/10.1016/0921-4526(91)90588-6