The Effectiveness of a Computer-Tailored Web-Based Physical Activity Intervention Using Fitbit Activity Trackers in Older Adults (Active for Life): Randomized Controlled Trial.

Background: Physical activity is an integral part of healthy aging; yet, most adults aged ≥65 years are not sufficiently active. Preliminary evidence suggests that web-based interventions with computer-tailored advice and Fitbit activity trackers may be well suited for older adults.

Objective: The aim of this study was to examine the effectiveness of Active for Life, a 12-week web-based physical activity intervention with 6 web-based modules of computer-tailored advice to increase physical activity in older Australians.

Imaging through Nonlinear Metalens Using Second Harmonic Generation.

The abrupt phase change of light at metasurfaces provides high flexibility in wave manipulation without the need for accumulation of propagating phase through dispersive materials. In the linear optical regime, one important application field of metasurfaces is imaging by planar metalenses, which enables device miniaturization and aberration correction compared to conventional optical microlens systems. With the incorporation of nonlinear responses into passive metasurfaces, optical functionalities of metalenses are anticipated to be further enriched, leading to completely new application areas.

Towards Low Energy Atrial Defibrillation.

A wireless powered implantable atrial defibrillator consisting of a battery driven hand-held radio frequency (RF) power transmitter (ex vivo) and a passive (battery free) implantable power receiver (in vivo) that enables measurement of the intracardiac impedance (ICI) during internal atrial defibrillation is reported. The architecture is designed to operate in two modes: Cardiac sense mode (power-up, measure the impedance of the cardiac substrate and communicate data to the ex vivo power transmitter) and cardiac shock mode (delivery of a synchronised very low tilt rectilinear electrical shock waveform). An initial prototype was implemented and tested.

Control of cancer pain by epidural infusion of morphine.

Pain that cannot be controlled by traditional oral and parenteral methods in those patients with advanced cancer can be alleviated by spinal administration of narcotics. Epidural and intrathecal infusion with morphine causes analgesia by blocking spinal receptors without significant long-term central nervous, gastrointestinal, and genitourinary system effects. Of the total of 33 patients, epidural catheters inserted in 20 patients then connected by a subcutaneous tunnel to a continuous infusion system.

Familial male breast carcinoma.

Breast cancer in men is a rare disease, accounting for approximately 1% of all breast cancers. In a recent review of the literature, only 12 reports of breast cancer in related men have been recorded. A case of familial breast cancer is reported involving two men and two women.