Present Status of Neutron Potential Further Development of Optical Potential Research.

1998 ◽  
Vol 40 (1) ◽  
pp. 29-39
Author(s):  
Masaru MATOBA ◽  
Kenji ISHIBASHI ◽  
Yukinobu WATANABE ◽  
Toshihiko KAWANO ◽  
Takaaki OHSAWA ◽  
...  
Keyword(s):  
Present Status ◽  
Optical Potential ◽  
Further Development

Further Development and Studies of Gas Methods in Matrix Diffusion

1993 ◽  
Vol 333 ◽  
Author(s):  
Kari Hartikainen ◽  
K. Väätäinen ◽  
A. Hautojärvi ◽  
J. Timonen
Keyword(s):  
Porous Media ◽  
Numerical Model ◽  
Water Flow ◽  
Present Status ◽  
Gas Flow ◽  
Hydrodynamic Dispersion ◽  
Matrix Diffusion ◽  
Flow Experiment ◽  
Further Development ◽  
Flow Experiments

ABSTRACTThe present status of the recently introduced gas method equipment for migration studies of fractured and porous media is briefly reviewed together with advances in the experimental techniques. The conditions under which matrix diffusion can be observed in both gas flow and water flow experiments are discussed in some detail. Results for a gas flow experiment are shown, and explained with a numerical model which incorporates the effects of hydrodynamic dispersion and matrix diffusion. The necessary parameters for a corresponding water flow experiment are also briefly discussed.

The Future of Radar Target Enhancers

1997 ◽  
Vol 50 (2) ◽  
pp. 248-250
Author(s):  
N. Ward
Keyword(s):  
Present Status ◽  
Radar Signal ◽  
Radar Target ◽  
Radar Detection ◽  
Identifying Code ◽  
The Future ◽  
Small Craft ◽  
Further Development

The development, present status and likely application of Radar Target Enhancers are discussed. Their role in improving the effectiveness of aids to navigation and enhancing the safety of small craft is considered and their likely further development assessed.The Radar Target Enhancer (RTE) is a device which automatically transmits a signal in response to an interrogating signal received. The response from an RTE has no identifying code. The RTE only amplifies and retransmits the radar signal received, so that it has the same appearance on a display as a passive return, but is more consistent. The purpose is to improve the radar returns from navigation marks and to improve radar detection of small craft, to reduce the risk of collision.

The present status of fast breeder reactors in the U. S. S. R

1990 ◽  
Vol 331 (1619) ◽  
pp. 313-321 ◽  
Keyword(s):  
Research And Development ◽  
Present Status ◽  
Nuclear Energy ◽  
Large Scale ◽  
Current Status ◽  
Slowing Down ◽  
Rate Of Growth ◽  
Fast Breeder Reactors ◽  
Breeder Reactors ◽  
Further Development

Because of the present conditions — the rate of growth of nuclear energy is slowing down in the U. S. S. R. — the large-scale deployment of commercial LM fast breeder reactors (LMFBRS) is being postponed. Notwithstanding that, experience has been gained through research and development and through the operation of FBRS, and both grants planning and the implementation of the next steps for the promotion of LMFBRS are under way. A brief analysis of the current status and prospects for further development of the FBR programme is given.

Present status of radio astrometry with baselines ≤ 35 km

1978 ◽  
Vol 48 ◽  
pp. 175-178 ◽  
Author(s):  
K. J. Johnston
Keyword(s):  
Present Status ◽  
Future Work

A summary of results for radio astrometry with baselines ≤ 35 km and priorities for future work are given.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

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