A QUALITATIVE STUDY OF RADIO-FREQUENCY INTERFERENCE IN RADIAC-TELEMETRY SYSTEMS (2005)
A qualitative evaluation was made of the effects of radio frequency interference (RFI) and bandwidh limitation on the accuracy and reliability of transmitted data from a typical nuclear radiation...
GAMMA AND X-RAY EFFECTS IN MULTIPLIER PHOTOTUBES, (2005)
Four types of multiplier phototubes were selected to represent structures in common use and to allow comparisons of radiation sensitivity between tubes of different sizes and structures. Gamma fields...
Higher order ocular aberrations after cycloplegic and non-cycloplegic pupil dilation (2003)
Carkeet, Andrew D., Velaedan, S., Tan, Y. K., Lee, D. Y., Tan, Donald T.
PURPOSE: Clinical aberrometry is commonly undertaken with the use of mydriatic agents, however there is no literature available on whether aberrometry results obtained under cycloplegia differ from...
Higher order ocular aberrations after cycloplegic and non-cycloplegic pupil dilation (2003)
Carkeet, Andrew D., Velaedan, S., Tan, Y. K., Lee, D. Y., Tan, Donald T.
PURPOSE: Clinical aberrometry is commonly undertaken with the use of mydriatic agents, however there is no literature available on whether aberrometry results obtained under cycloplegia differ from...
Higher order ocular aberrations after cycloplegic and non-cycloplegic pupil dilation (2003)
Carkeet, Andrew D., Velaedan, S., Tan, Y. K., Lee, D. Y., Tan, Donald T.
PURPOSE: Clinical aberrometry is commonly undertaken with the use of mydriatic agents, however there is no literature available on whether aberrometry results obtained under cycloplegia differ from...
Initial Quality of Advanced Joining Concepts. (2002)
Garver,W. R., Lee,D. Y., Koepsel,K. M.
This initial fatigue quality of three types of aircraft construction were studied. The three types included conventional mechanically-fastened joints, adhesively-bonded joints, and monolithic...
Lee, D. Y., Subramaniam, N., Fellows, C. M., Gilbert, R. G.
A series of modified natural rubber latexes (NELs) grafted with poly(methyl methacrylate) (PMMA) were prepared by seeded emulsion polymerization with NRL as the seed polymer. Two different redox...
Rational design of polymer colloids (2001)
Lamb, D., Anstey, J. F., Lee, D. Y., Fellows, C. M., Monteiro, M. J., Gilbert, R. G.
Recent advances in understanding of the fundamental mechanistic events in emulsion polymerization give the potential for rational design of new materials based on polymer colloids. It is now possible...
Evaluation of RST (Rapidly Solidified Technology) Structural Durability and Life Cycle Costs. (1998)
Garver, W. R., Lee, D. Y., Gordon, D. E.
The main objective of this study is to characterize the structural durability of high-strength powder metallurgy (P/M) aluminum alloys. The selected materials were CW67 extrusions, 7091-extrusions...
Microstructure and Local Brittle Zone Phenomena in High-Strength Low-Alloy Steel Welds. (1998)
Kim, B. C., Lee, S., Kim, N. J., Lee, D. Y.
This study is concerned with a correlation between the microstructure and the local brittle zone (LBZ) phenomena in high-strength low-alloy (HSLA) steel welds; the influence of the LBZ on toughness...
Lee, J. C., Lee, S., Lee, D. Y., Kim, N. J.
The effects of high-temperature exposure on the mechanical properties and the microstructure of a rapidly solidified Al-Fe-V-Si alloy were examined in order to identify the critical factors...
In Situ Fracture Observations on Tempered Martensite Embrittlement in an AISI 4340 Steel. (1998)
Kim, B. C., Lee, S., Lee, D. Y., Kim, N. J.
The aim here is to gain a more fundamental understanding of how the microfracture processes are affected by microstructural changes and impurity segregation during tempering; in this article,...
Lee, Sunghak, Lee, D. Y., Kim, Nack J.
The principal metallurgical factor leading to embrittlement of rapid solidification-powder metallurgy (RS-PM) Al-Fe-V-Si alloy after high temperature exposure at 480 C was identified; although the...
Formation of Coarse Al13Fe4 Particles and Their Effects in an RS/PM Al-Fe-V-Si Alloy. (1998)
Lee, Sunghak, Lee, D. Y., Ahn, Sangho
The present paper analyzed the fracture behavior of an RS/PM Al-Fe-V-Si alloy after high temperature exposure, in particular the effects of coarse Al13Fe4 particles formed during the exposure at 480...
Fracture Behavior of a Ti3Al-Nb Alloy. (1998)
Kim, Nack J., Kim, J. Y., Lee, D. Y., Cho, W. S.
A study has been made on the fracture behavior of a two-phase (alpha2 + beta) Ti3Al-Nb alloy, with particular emphasis on the effect of morphologies; the coarse colony structure obtained by...
Creep Behavior of AISI 316 Stainless Steel Above 0.5 Tm. (1998)
Static and cyclic creep behavior has been studied for AISI 316 stainless steel. Creep tests were performed at temperatures between 923 and 983 K at stresses between 206 and 285 MPa. The creep rate,...
Effect of Matrix Constituent Phases on the Fracture Behavior of 2124 Al-SiCw Composites. (1998)
Kim, Young H., Lee, Sunghak, Lee, D. Y., Kim, Nack J.
The sic whisker reinforced aluminum composites are generally known to have high elastic modulus and strength combined with light weight, providing a potentially wide range of applications in the...
The Influence of Alloying Elements on Impurity Induced Grain Boundary Embrittlement. (1998)
Lee, D. Y., Barrera, E. V., Stark, J. P., Marcus, H. L.
A nonequilibrium thermodynamic model which describes the effect of solute grain boundary segregation on grain boundary cohesion was extended to fe ternary systems. the extended model directly and...
Wagner, B L, Pollio, G, Leonhardt, S, Wani, M C, Lee, D Y, Imhof, M O, ...
Previously, we have shown that agonists and antagonists interact with distinct, though overlapping regions within the human progesterone receptor (hPR) resulting in the formation of structurally...
Wagner, B L, Pollio, G, Leonhardt, S, Wani, M C, Lee, D Y, Imhof, M O, ...
Previously, we have shown that agonists and antagonists interact with distinct, though overlapping regions within the human progesterone receptor (hPR) resulting in the formation of structurally...