Institution
Central Glass and Ceramic Research Institute
Facility•Kolkata, West Bengal, India•
About: Central Glass and Ceramic Research Institute is a facility organization based out in Kolkata, West Bengal, India. It is known for research contribution in the topics: Microstructure & Sintering. The organization has 1123 authors who have published 2904 publications receiving 51519 citations.
Topics: Microstructure, Sintering, Ceramic, Thin film, Mullite
Papers published on a yearly basis
Papers
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TL;DR: It is shown that breaching of the Al-avoidance principle is essential for understanding the distribution of network-forming AlO4 and SiO4 structural units in alkaline-earth aluminosilicate glasses.
Abstract: Aluminosilicate glasses are considered to follow the Al-avoidance principle, which states that Al–O–Al linkages are energetically less favorable, such that, if there is a possibility for Si–O–Al linkages to occur in a glass composition, Al–O–Al linkages are not formed. The current paper shows that breaching of the Al-avoidance principle is essential for understanding the distribution of network-forming AlO4 and SiO4 structural units in alkaline-earth aluminosilicate glasses. The present study proposes a new modified random network (NMRN) model, which accepts Al–O–Al linkages for aluminosilicate glasses. The NMRN model consists of two regions, a network structure region (NS-Region) composed of well-separated homonuclear and heteronuclear framework species and a channel region (C-Region) of nonbridging oxygens (NBOs) and nonframework cations. The NMRN model accounts for the structural changes and devitrification behavior of aluminosilicate glasses. A parent Ca- and Al-rich melilite-based CaO–MgO–Al2O3–SiO2 ...
37 citations
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TL;DR: It was found that a zirconia-based erbium-doped fiber amplifier can achieve even better flat-gain value and bandwidth as well as lower noise figure than the conventional Bi-EDFA.
Abstract: In this Letter, we present a comprehensive comparison of the performance of a zirconia-based erbium-doped fiber amplifier (Zr-EDFA) and a bismuth-based erbium-doped fiber amplifier (Bi-EDFA). The experimental results reveal that a Zr-EDFA can achieve comparable performance to the conventional Bi-EDFA for C-band and L-band operations. With a combination of both Zr and Al, we could achieve a high erbium-doping concentration of about 2800 ppm (parts per million) in the glass host without any phase separations of rare earths. The Zr-based erbium-doped fiber (Zr-EDF) was fabricated using in a ternary glass host, zirconia-yttria-aluminum codoped silica fiber through a solution-doping technique along with modified chemical vapor deposition. At a high input signal of 0 dBm, a flat gain at average value of 13 dB is obtained with a gain variation of less than 2 dB within the wavelength region of 1530-1575 nm and using 2 m of Zr-EDF and 120 mW pump power. The noise figures are less than 9.2 at this wavelength region. It was found that a Zr-EDFA can achieve even better flat-gain value and bandwidth as well as lower noise figure than the conventional Bi-EDFA. (C) 2010 Optical Society of America
37 citations
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TL;DR: A unique nanocrystalline, mesoporous PdO-SnO(2) film exhibiting high sensitivity and selectivity to hydrogen gas at room temperature has been developed.
37 citations
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TL;DR: This review introduces osteomyelitis--its prevalence and pathogenesis, the present options for drug delivery and their limitations, and the wide range of carrier materials and effective drug choices, with major focus on the pharmaceutical concepts involved in drug delivery system design and development.
Abstract: Osteomyelitis, an inflammatory process accompanied by bone destruction, is caused by infective microorganisms. The high success rates of antimicrobial therapy by conventional routes of administration in controlling most infectious diseases have not yet been achieved with osteomyelitis for several reasons. Local and sustained availability of drugs have proven to be more effective in achieving prophylactic and therapeutic outcomes. This review introduces osteomyelitis--its prevalence and pathogenesis, the present options for drug delivery and their limitations, and the wide range of carrier materials and effective drug choices, with major focus on the pharmaceutical concepts involved in drug delivery system design and development. With increasing numbers of orthopedic surgeries and the advent of combination devices that provide support and deliver drugs, local drug delivery for osteomyelitis is a topic of importance for both social and commercial interests.
37 citations
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TL;DR: In this paper, the site symmetry around Cr 3+ ions is distorted octahedral as Cr 3 + ions substitute for Al 3+ sites and the number of spins participating in the resonance for g ǫ = 1.97 is measured as a function of temperature and the activation energy is calculated.
37 citations
Authors
Showing all 1137 results
Name | H-index | Papers | Citations |
---|---|---|---|
David J. Hill | 107 | 1364 | 57746 |
Amit Bandyopadhyay | 74 | 338 | 19765 |
Pawan Kumar | 64 | 547 | 15708 |
Amitava Patra | 53 | 236 | 9637 |
A. K. Raychaudhuri | 49 | 368 | 8948 |
Indranil Manna | 46 | 263 | 9306 |
André Larbot | 46 | 194 | 6489 |
Yonghua Song | 46 | 227 | 7154 |
Bikas K. Chakrabarti | 42 | 358 | 8649 |
Asit Baran Panda | 40 | 112 | 4525 |
Somenath Roy | 39 | 191 | 5125 |
Dhananjay Pal | 38 | 138 | 4407 |
Vamsi Krishna Balla | 37 | 150 | 4731 |
Sujit Roy | 37 | 204 | 3682 |
R.P.S. Chakradhar | 36 | 166 | 4423 |