S. K. Ray

Publication List Details

Period

1980 - 9999

Number

26

Co-Authors

Realization of biferroic properties in La0.6Sr0.4MnO3 0.7Pb(Mg0.33Nb0.67)O3 0.3(PbTiO3) epitaxial superlattices (2007)

Chaudhuri, Ayan Roy, Ranjith, R., Krupanidhi, S. B., Mangalam, R. V. K., Sundaresan, A., Majumdar, S., ...

A set of symmetric and asymmetric superlattices with ferromagnetic La0.6Sr0.4MnO3 and ferroelectric 0.7Pb(Mg0.33Nb0.67)O3 0.3(PbTiO3) as the constituting layers were fabricated on LaNiO3 coated (100)...

Modelled soil organic carbon stocks and changes in the Indo-Gangetic Plains, India, between 2000 and 2030 (2007)

Bhattacharyya, T., Pal, D.K., Easter, M., Batjes, N.H., Milne, E., Gajbhiye, K.S., ...

The GEFSOC Project developed a system for estimating soil carbon (C) stocks and changes at the national and sub-national scale. As part of the development of the system, the Century ecosystem model...

Improved Temperature Performance of 1.31-mu/m Quantum Dot Lasers by Optimized Ridge Waveguide Design (2005)

Ray, S.K., Groom, K.M., Hogg, R.A., Liu, H.Y., Hopkinson, M., Badcock, T., ...

In this letter, we demonstrate the importance of the fabricated device structure for the external differential efficiency, threshold current density, and maximum operating temperature for ground...

Improved Temperature Performance of 1.31-mu/m Quantum Dot Lasers by Optimized Ridge Waveguide Design (2005)

Ray, S.K., Groom, K.M., Hogg, R.A., Liu, H.Y., Hopkinson, M., Badcock, T., ...

In this letter, we demonstrate the importance of the fabricated device structure for the external differential efficiency, threshold current density, and maximum operating temperature for ground...

Improved Temperature Performance of 1.31-mu/m Quantum Dot Lasers by Optimized Ridge Waveguide Design (2005)

Ray, S.K., Groom, K.M., Hogg, R.A., Liu, H.Y., Hopkinson, M., Badcock, T., ...

In this letter, we demonstrate the importance of the fabricated device structure for the external differential efficiency, threshold current density, and maximum operating temperature for ground...

Adoption Level of Wheat Technology and the Grower`s Knowledge Gap in Bangladesh (2001)

M. Kamruzzaman, M. G. Kibria, S.K. Ray

This paper examines the extent of adoption of modern technology in Bangladesh and knowledge gap of the farmers about the technology. It was found that 100% of wheat acreage in the country were...

Vegetable Seed Marketing System in Some Selected Areas of Bangladesh (2001)

S. K. Ray, S. A. Sabur, M. Kamruzzaman

The study was undertaken to investigate the marketing of vegetable seed in private sector as well as public sector in five selected areas of Bangladesh. Besides for traders` survey apart from above...

Adoption Level of Wheat Technology and the Grower`s Knowledge Gap in Bangladesh (2001)

M. Kamruzzaman, M. G. Kibria, S.K. Ray

This paper examines the extent of adoption of modern technology in Bangladesh and knowledge gap of the farmers about the technology. It was found that 100% of wheat acreage in the country were...

Scanning tunneling microscopy and spectroscopy of La0.67Ca0.33MnO3 thin films grown on LaAlO3(100) (1999)

Kar, A K, Dhar, A, Ray, S K, Mathur, B K, Bhattacharya, D, Chopra, K L

Thin films of La0.67Ca0.33MnO3 have been deposited at room temperature on LaAlO3(100) substrates by dc magnetron sputtering. The as-deposited films are amorphous and become polycrystalline on...

Three-Dimensional Aspects of Fatigue Crack Closure. (1998)

Grandt, A. F., Pope, J. E., Ray, S. K.

This final report summarizes progress on a basic research effort to determine three-dimensional aspects of the relationship between applied load and fatigue crack face separation. The research was...

Dynamic Strain Ageing in Type 316 Stainless Steel at 300 K. (1998)

Ray, S. K., Samuel, K. G., Rodriguez, P.

The results from studies on DSA (Dynamic Strain Aging) kinetics of 316 stainless steel at 300 K from the yield transients on strain rate jumps and on tensile reloads after stress relaxation tests are...

Anomalies in the Tensile Work Hardening in Type 316 Stainless Steel at 300 K. (1998)

Ray, S. K., Samuel, K. G., Rodriguez, P.

Tensile tests were performed at 300 K on stainless steel 316 to determine anomalies in the work hardening. Tensile deformation data were fitted to work hardening equations and indicate that while...

Characterization of Irradiation-Induced Embrittlement in an ASTM A 203D Steel Using Instrumented Impact Testing. (1998)

Ray, S. K., Sreenivasan, P. R., Samuel, K. G., Rodriguez, P.

This paper reports the results of analysis of the load-temperature data obtained from instrumented impact tests carried out at various temperatures using half-thick Charpy V-notch specimens of a 3.5%...

The Influence of Crack Closure on the Positive Load Ratio (R) Dependence of Fatigue Threshold Stress Intensity Factor Range of AISI 316 Stainless Steel in Air at Room Temperature. (1998)

Packiaraj, C. C., Ray, S. K., Mannan, S. L.

Near-threshold fatigue crack growth (FCG) behaviour of 316 SS at positive R-ratios in air at room temperature is influenced by crack closure. Empirical modifications of McEvily-Groeger and Zhao...

New Toughness Parameters from the Tensile Test - A First Report. (1998)

Ray, S. K., Bhaduri, A. K., Rodriguez, P.

This paper concerned metals in some important way and contained information about, utilized, or discussed these subjects: materials and material types: 2.25cr-1mo steel, 9cr-1mo steel, aisi 316, aisi...

New Toughness Parameters from Tensile Test for Optimising Postweld Heat Treatment of Alloy 800/2.25Cr-1Mo Steel Joint. (1998)

Bhaduri, A. K., Ray, S. K., Rodriguez, P.

This paper concerned metals in some important way and contained information about, utilized, or discussed these subjects: basic topics: experimental materials and material types: 2.25cr-1mo,...

Efficient families of ratio and product-type estimators (1980)

RAY, S. K., SAHAI, ASHOK

This paper proposes two-parameter families of ratio-type and product-type estimators for a finite population mean based on simple random samples of observations on the variable of interest and a...

Pathogenic autoantibodies are routinely generated during the response to foreign antigen: a paradigm for autoimmune disease.

Ray, S K, Putterman, C, Diamond, B

The immune system's ability to distinguish self and nonself is essential for both host defense against foreign agents and protection of self-antigens from autoimmune destruction. Such discrimination...

Identification of a 60-kilodalton Rb-binding protein, RBP60, that allows the Rb-E2F complex to bind DNA.

Ray, S K, Arroyo, M, Bagchi, S, Raychaudhuri, P

Several reports have indicated that the product of the retinoblastoma gene (Rb) complexes with the transcription factor E2F. We present evidence that the DNA-binding of the Rb-E2F complex involves...

Pathogenic autoantibodies are routinely generated during the response to foreign antigen: a paradigm for autoimmune disease.

Ray, S K, Putterman, C, Diamond, B

The immune system's ability to distinguish self and nonself is essential for both host defense against foreign agents and protection of self-antigens from autoimmune destruction. Such discrimination...

Identification of a 60-kilodalton Rb-binding protein, RBP60, that allows the Rb-E2F complex to bind DNA.

Ray, S K, Arroyo, M, Bagchi, S, Raychaudhuri, P

Several reports have indicated that the product of the retinoblastoma gene (Rb) complexes with the transcription factor E2F. We present evidence that the DNA-binding of the Rb-E2F complex involves...

A stochastic model of malaria transition rates from longitudinal data: considering the risk of "lost to follow-up".

Verma, B L, Ray, S K, Srivastava, R N

A model, using stochastic processes, is developed to estimate some epidemiological parameters of malaria in a homogeneous population from longitudinal data. Assessments of transition probabilities...