A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Vasudevan, R.
- Struchium sparganophorum (L.) O. Kuntze a New Record for India
Authors
1 Government Brennen College, Kerala, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 8, No 2 (1966), Pagination: 202-203Abstract
No Abstract.Full Text
- A Physical Approach to some Limiting Stochastic Operations
Authors
1 Institute for Advanced Study, Princeton, US
2 Dept. of Theoretical Physics, University of Madras, IN
Source
The Journal of the Indian Mathematical Society, Vol 24, No 3-4 (1960), Pagination: 457-477Abstract
Analytical operations like convergence for sequences of random variables, differentiation and integration for random functions are usually denned in close analogy with ordinary sequences and functions. In the opinion of the authors, for a proper understanding of these operations from a physical point of view, it is worthwhile examining systematically the connection between the concepts of correlation and convergence. In addition, the correspondence between a discrete sequence of random variables and a random function is discussed.
The paper deals with these extensions and also with the relationship between stationarity and ergodicity on the one hand and correlation on the other, using the concept of ' realisation '. The connection with previous papers of one of the authors (R) on stochastic integration is pointed out.
I n effect, the paper amounts to a critical discussion and extension of the results contained in the chapter on ' Limiting stochastic operations ' in Bartlett's book.
- Effect of hot Working Temperature on the Weldability of Ti-6AI-4V Alloy
Authors
1 Vikram Sarabhai Space Centre, Trivandrum, IN
2 Indian Institute of Technology, Madras, IN
Source
Indian Welding Journal, Vol 25, No 3 (1992), Pagination: 153-158Abstract
The resulting microstructure and mechanical properties of Ti-6A1-4V alloy depend to a great extent on the temperature at which working is carried out. Two components namely 650mm diameter Rings and 650mm diameter Hemispherical Shells have been processed at temperatures about 50°C below and 100°C above the beta-transus temperature respectively. These components have been evaluated for their microstructures, mechanical 'properties, fracture toughness and weldability. The microstructure of the rings which have been rolled at 950°C reveals the presence of equiaxed primary alpha in the matrix of transformed beta. On the other hand, the microstructure in the case of hemispherical shells forged at 1100°C, is 100 percent transformed beta. The tensile ductility of the rings is found to be higher than that of the hemispherical shells. However, the fracture toughness of hemispherical shells is much superior to the rings. The samples cut from these components are machined to 12mm thickness and electron beam welded for their comparative property evaluation. It is seen that the welded samples reflect and retain almost the same tensile properties as the parent material except for the impact toughness at the fusion zones.
- Plastics – don’t ban, but plan
Authors
1 Coordinator TCE ENVIS RP, Department of Chemistry, Thiagarajar College of Engineering, Madurai 625 015, India, IN
Source
Current Science, Vol 121, No 7 (2021), Pagination: 871-872Abstract
No Abstract.Full Text