Understanding the assistive technology needs of people over 55: The future of mobility aids.

Objective: To understand mobility issues not adequately serviced by assistive technology (AT).

Methods: A two-stage mixed-methods research project that forms the basis of future AT design and manufacture. Stage 1: a focus group comprising 46 participants (people aged 55 years or older with mobility issue/s) and their support networks.

Opportunities for better use of collective action theory in research and governance for invasive species management.

Controlling invasive species presents a public-good dilemma. Although environmental, social, and economic benefits of control accrue to society, costs are borne by only a few individuals and organizations. For decades, policy makers have used incentives and sanctions to encourage or coerce individual actors to contribute to the public good, with limited success.

Microbiological and biochemical spoilage of smoke-dried fishes sold in West African open markets.

Proximate composition and microbiological characteristics of pre-dried Chrysichthys nigrodigitatus and Pseudotolithus typus were studied over a period of 4weeks to determine the health risks associated with delayed consumption. All analyses were conducted using standard microbiological and chemical methods. Results showed a general decline in microbiological safety and nutritive characteristics of both fish species over time, with an observed increase in microbial loads over time.