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Now showing items 721-740 of 1835

Elliptically bent conformal phased array of modified box-horns for hyperthermia treatment of tumors

Gupta, R.C.; Singh, S.P. (2007)

A novel and effective hyperthermia applicator utilizing an elliptically bent conformal phased array of modified box-horns is analyzed using Fresnel-Kirchhoff scalar diffraction field theory. This configuration is mainly ...
Influence of medium constituents on the biosynthesis of cephalosporin-C

Nigam, V.K.; Verma, R.; Kumar, A.; Kundu, S.; Ghosh, P. (2007-04-15)

Acremonium chrysogenum NCIM 1069 was used for the biosynthesis of cephalosporin-C (CPC) in batch mode of cultivation. The effect of different medium constituents for better yield of CPC was thoroughly investigated. From ...
High-temperature relaxor ferroelectric behavior in Pr-doped SrTi O3

Ranjan, R.; Hackl, R.; Chandra, A.; Schmidbauer, E.; Trots, D.; Boysen, H. (2007-12-20)

Temperature-dependent Raman scattering, dielectric, and powder x-ray diffraction studies have been carried out on Pr-doped SrTi O3 ceramic samples. Activation of T O2 and T O4 polar modes indicated increasing degree of ...
Stability of ferroic phases in the highly piezoelectric Pb(Zr xTi1-x)O3 ceramics

Pandey, D.; Singh, A.K.; Baik, S. (International Union of Crystallography, 2008-01-01)

The morphotropic phase boundary in the phase diagram of the technologically important Pb(ZrxTi1-x)O3 (PZT) ceramics has been traditionally believed to separate ferroelectric tetragonal and rhombohedral phase regions. This ...
On the evolution of quasicrystalline and crystalline phases in rapidly quenched Al-Co-Cu-Ni alloy

Yadav, T.P.; Mukhopadhyay, N.K. (Elsevier BV, 2007-03-25)

The occurrence of stable decagonal quasicrystalline phase in Al-Co-Ni and Al-Cu-Co alloys through conventional solidification is well established. Earlier, we have studied the effect of Cu substitution in place of Co in ...
H-shaped stacked patch antenna for dual band operation

Ansari, J.A.; Singh, P.; Dubey, S.K.; Khan, R.U.; Vishvakarma, B.R. (Electromagnetics Academy, 2008)

Analysis of U-slot loaded patch stacked with H-shaped parasitic elements is given in this paper. It is found that the antenna exhibits dual resonance and both the resonance frequency (upper and lower) depends directly on ...
Erratum: Compensating and equivalence properties of optical waveguides with a linear and sinusoidal variation of the core refractive index and core size along the propagation direction (Microwave Opt Technol Lett (2003) 39 (348))

Pandey, P.C.; Ojha, S.P. (John Wiley and Sons Inc., 2003-10-06)

ERRATUM TO “EFFECT OF AXIAL LINEAR AND SINUSOIDAL VARIATION OF THE CORE REFRACTIVE INDEX ON THE PROPAGATION OF SOME LOW ORDER MODES IN AN OPTICAL FIBER”
Role of the dielectric constant of ferroelectric ceramic in enhancing the ionic conductivity of a polymer electrolyte composite

Singh, P.K.; Chandra, A. (2003-10-07)

The effect of dispersal of ferroelectric ceramic materials Ba0.70Sr0.30TiO3 (Tc ≈ 30°C) and Ba0.88Sr0.12TiO3 (Tc ≈ 90°C) on the ionic conductivity of an ion conducting polymer electrolyte (PEO:NH4I) is reported. The addition ...
Analysis of radiation patterns of compound box-horn antenna

Gupta, R.C.; Singh, S.P. (2007)

A new type of antenna named as compound box-horn antenna is designed and analyzed for its radiation pattern. The present analysis is based on plane wave spectra for three-dimensional fields. The compound box-horn antenna ...
Evaluation of Cissampelos pareira against gastric cancer and enzymes associated with carcinogen metabolism

Amresh, G.; Rao, C.V.; Singh, P.N. (2007-10)

The current study is an effort to identify the effect of a hydroalcohol (50% ethanol) extract of roots of Cissampelos pareira (L.) Hirsuta (Menispermaceae) (CPE) in forestomach cancer and on carcinogen metabolizing phase ...
Spatial damping of compressional MHD waves in prominences

Singh, K.A.P.; Dwivedi, B.N.; Hasan, S.S. (2007-10)

Aims. We study the spatial damping of linear compressional MHD waves in a homogeneous, isothermal, and unbounded prominence. Methods. We derive a general dispersion relation invoking the Newtonian radiation and turbulent ...
Ethylcellulose inserts of an orphan drug for periodontitis: Preparation, in vitro, and clinical studies

Barat, R.; Srinatha, A.; Pandit, J.K.; Mittal, N.; Anupurba, S. (2007-11)

Ethylcellulose inserts of niridazole fabricated by casting were studied for in vitro release and in vivo clinical effectiveness. The in vitro drug release was steady and sustained for over 7 days and followed diffusion ...
High-resolution synchrotron x-ray diffraction study of Zr-rich compositions of Pb ZrxTi1-x)O3(0.525≤x≤0.60): Evidence for the absence of the rhombohedral phase

Singh, A.K.; Pandey, D.; Yoon, S.; Baik, S.; Shin, N. (2007)

Results of Rietveld analysis of the synchrotron x-ray diffraction data on Pb (Zrx Ti1-x) O3 (PZT) for 0.525≤x≤0.60 are presented to show the absence of rhombohedral phase on the Zr-rich side of the morphotropic phase ...
Chitosan inserts for periodontitis: Influence of drug loading, plasticizer and crosslinking on in vitro metronidazole release

Barat, R.; Srinatha, A.; Pandit, J.K.; Anupurba, S.; Mittal, N. (2007-12-01)

Chitosan based metronidazole (MZ) inserts were fabricated by the casting method and characterized with respect to mass and thickness uniformity, metronidazole loading and in vitro metronidazole release kinetics. The ...
Preparation and in vitro characterization of gellan based floating beads of acetohydroxamic acid for eradication of H. pylori

Rajinikanth, P.S.; Mishra, B. (2007-12-01)

Gellan based floating beads of acetohydroxamic acid (AHA) were prepared by the ionotropic gellation method to achieve controlled and sustained drug release for treatment of Helicobacter pylori infection. The prepared beads ...
Role of Ti3Al/silicides on tensile properties of Timetal 834 at various temperatures

Sai Srinadh, K.V.; Singh, N.; Singh, V. (2007-12)

Extremely fine coherent precipitates of ordered Ti3Al and relatively coarse incoherent precipitates of S2 suicide exist together in the near α-titanium alloy, Timetal 834, in the dual phase matrix of primary α and transformed ...
Cross-linked guar gum hydrogel discs for colon-specific delivery of ibuprofen: Formulation and in vitro evaluation

Das, A.; Wadhwa, S.; Srivastava, A.K. (2006-03-01)

Hydrogel discs of guar gum cross-linked with glutaraldehyde were prepared as vehicles for colon-specific drug delivery. Ibuprofen was chosen as model drug. The discs were evaluated for such parameters as size, shape, weight, ...
Calorimetry of dehydrogenation and dangling-bond recombination in several hydrogenated amorphous silicon materials

Roura, P.; Farjas, J.; Rath, C.; Serra-Miralles, J.; Bertran, E.; Roca I Cabarrocas, P. (2006)

Differential scanning calorimetry (DSC) was used to study the dehydrogenation processes that take place in three hydrogenated amorphous silicon materials: nanoparticles, polymorphous silicon, and conventional device-quality ...
Observations of the sun at vacuum-ultraviolet wavelengths from space. Part II: Results and interpretations

Wilhelm, K.; Marsch, E.; Dwivedi, B.N.; Feldman, U. (2007-12)

In Part I of this review, the concepts of solar vacuum-ultraviolet (VUV) observations were outlined together with a discussion of the space instrumentation used for the investigations. A section on spectroradiometry provided ...
Role of palladium in the redox electrochemistry of ferrocene monocarboxylic acid encapsulated within ORMOSIL networks

Pandey, P.C.; Upadhyay, B.C. (2005-06)

We report herein the effect of palladium on the redox electrochemistry of ferrocene monocarboxylic acid encapsulated within an organically modified sol-gel glass network (ORMOSIL). It has been found that amount of palladium ...

Now showing items 721-740 of 1835

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