Silicone oil continues to be an important aid in retinal detachment surgery. We report a case in which disparate responses to silicone oil were noted in the conjunctiva and intraocularly. Intraocularly, the oil permeated a fibrous membrane that formed behind a keratoprosthesis, the first example of this phenomenon. We detail the histological response to the oil at this site as well as a distinc...

In the design of supersonic low-boom aircraft, it is important to balance the aerodynamic performance and sonic boom requirements in a way that represents the best compromise for the overall design. Since the ground sonic boom is typically not a smooth function of the design variables and may actually contain multiple local minima, it is important to select an optimization algorithm that is abl...

The practical use of high-fidelity multidisciplinary optimization techniques in low-boom supersonic business jet designs has been limited because of the high computational cost associated with CFD-based evaluations of both the performance and the loudness of the ground boom of the aircraft. This is particularly true of designs that involve the sonic boom loudness as either a cost function or a ...

BACKGROUND Given the recent boom of the cosmetic industry, there is a wealth of new products available to patients and physicians, including soft-tissue fillers. Bio-Alcamid polyacrylamide gel (Polymekon, Milan, Italy) is a filler that has potential to cause adverse reactions. OBSERVATIONS Two patients who had previously been treated with Bio-Alcamid outside of the United States presented wit...

We introduce the Boom Chameleon, a novel input/output device consisting of a flat-panel display mounted on a tracked mechanical boom. The display acts as a physical window into 3D virtual environments, through which a one-to-one mapping between real and virtual space is preserved. The Boom Chameleon is further augmented with a touch-screen and a microphone/speaker combination. We present a 3D a...

This article argues that competitive electricity markets are prone to the same cycles of boom and bust that appear in commodity markets and in a specialized industry like real estate. The article then demonstrates how boom and bust might appear in the western electricity system using computer simulation. A “business as usual” simulation shows that the west might be at the crest of a building bo...