Articles written in Bulletin of Materials Science
Volume 14 Issue 1 February 1991 pp 87-91
Effect of annealing on crystal size in pure Mysore silk fibres
R Somashekar R Gopalkrishna Urs
Wide angle X-ray diffraction studies of pure Mysore silk fibres, annealed at various temperatures at different periods of time were carried out to evaluate crystal size and lattice distortion parameters as these determine the properties of silk fibres.
Volume 18 Issue 5 September 1995 pp 549-555
X-ray analysis of different starch granules
Vasudeva Singh R Gopalkrishne Urs H Somashekarappa S Z Ali R Somashekar
Crystal sizes and lattice distortion parameters for root, pulse and cereal starch granules have been determined using observed X-ray diffraction reflections by Fourier method. Enthalpy for the formation of the lattice in root, pulse and cereal starches has been estimated and compared. It is found that the crystal size is normally high in root starch compared to pulse and cereal starches.
Volume 21 Issue 6 December 1998 pp 499-502 Rapid Communication
Influence of inherent strain on the curie temperature of rare earth ion-doped bismuth vanadate
K Sooryanarayana T N Guru Row R Somashekar K B R Varma
X-ray line broadening is found to be an effective parameter to estimate the strain associated with rare earth ion (Gd3+)-doped polycrystalline bismuth vanadate(Bi2VO5·5). The strain increases with increasing Gd3+ concentration. It is anisotropic and found to be maximum in (111) plane. The Curie temperature which is known to decrease with increase in the rare earth ion concentration in these compounds is correlated with increase in strain.
Volume 22 Issue 2 April 1999 pp 129-132 Liquid Crystals
Microscopic order parameter of two nematogenic compounds using X-rays
A P Divya D Revannasiddaiah R Somashekar M S Madhava
X-ray Laue type diffraction patterns were recorded using the image plate system at different temperatures in the nematic phase for two nematogenic compounds. Micro-orientational order parameters have been computed using different methods. These are compared with the microscopic orientational order parameters obtained from refractive index data. Higher order parameters have also been computed and compared. Distribution function at various temperatures for the two nematogenic compounds from Deutsch method has been reported.
Volume 22 Issue 4 June 1999 pp 805-810 Polymers
Microcrystalline parameters in native and acid-modified starches
H Somashekarappa R Somashekar Vasudeva Singh S Z Ali
Crystallite size and lattice distortion parameters of starches from cereals, millet, pulse, root and tuber before and after acid modification were determined by wide angle X-ray scattering (WAXS) studies. The (
Volume 46, 2023
Continuous Article Publishing mode
Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
Click here for Editorial Note on CAP Mode