This is a preliminary report of the use of a device to apply small pulses of radio-frequency energy to surgical wounds in order to improve wound healing. The device was applied to one eye in 21 patients who underwent bilateral blepharoplasty. There were no device-related complications. In 11 patients, edema and ecchymosis were noticeably less on the treated side within 24 hours of surgery. In 6...

The random generation of coherent solitary waves from incoherent waves in a medium with an instantaneous nonlinearity has been observed. One excites a propagating incoherent spin wave packet in a magnetic film strip and observes the random appearance of solitary wave pulses. These pulses are as coherent as traditional solitary waves, but with random timing and a random peak amplitude.

A trial is reported in which RAMC staff working in a dressing station and wearing full NBC Individual Protective Equipment (IPE), attempted to take pulse and blood pressure (BP) readings on casualties similarly clad. These basic parameters however, were obtained from only half the casualties, the time taken to obtain them was prohibitive and the blood pressures were inaccurate. Certain remedies...

Detailed measurements of finite-amplitude pulses radiated by plane and focused circular pistons in water are presented. Comparisons of time waveforms and frequency spectra, both on and off axis, are made with numerical calculations based on the nonlinear parabolic wave equation. Emphasis is on nonlinear distortion of amplitude- and frequency-modulated tone bursts. Use of short pulses enabled re...

Frontal asymmetry measured at rest using EEG is considered a stable marker of approach-avoidance behaviors and risk taking. We examined whether without salient cues of attention in the form of losses, predictability is reduced. Fifty-seven participants performed an experiential decision task in a gain-only, loss-only, and mixed (gains and losses) condition. Increased risk taking on the part of ...

Past empirical work suggests that aging is associated with decreases in risk taking. But are such effects universal? Life-history theory suggests that the link between age and risk taking is a function of specific reproductive strategies that can be more or less risky depending on the ecology. We assessed variation in the age-risk curve using World Values Survey data from 77 countries (N = 147,...

Free-electron lasers providing ultra-short high-brightness pulses of X-ray radiation have great potential for a wide impact on science, and are a critical element for unravelling the structural dynamics of matter. To fully harness this potential, we must accurately know the X-ray properties: intensity, spectrum and temporal profile. Owing to the inherent fluctuations in free-electron lasers, th...

In line with the goal of limiting health risk behaviors in adolescence, a growing literature investigates whether individual differences in functional brain responses can be related to vulnerability to engage in risky decision-making. We review this body of work, investigate when and in what way findings converge, and provide best practice recommendations. We identified 23 studies that examined...

Lasers have caused revolutionary changes in many fields of science and technology. Since 1960, six orders of magnitude, from 10 to 10 seconds, have been added to time-resolved observation of fast phenomena, which makes ultrafast research grows rapidly among materials science, biology, and chemistry. The use of these ultrashort high-power pulses went hand-in-hand with their development and alrea...