Non-invasive ion probes - tools for measuring transmembrane ion flux

Article Abstract:

The National Vibrating Probe Facility of the National Institutes of Health developed the non-selective vibrating voltage and ion-selective probe to provide physiologists a tool that can directly observe the flux of a single ion species across the plasma membrane of a cell. These probes use ionophores, which are liphophilic complexing agents that selectively transports ions across a membrane, to eliminate difficulties caused by drifts and differential signals. They are now also used to measure flux of other ions such as hydrogen, potassium, calcium and chloride.

Innovations, Measurement, Biological transport, Probes (Electronic instruments), Ionophores, Electrodes, Ion selective, Ion selective electrodes

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Sunshine for light in the night

Article Abstract:

Small solar-power systems (SSPS) are proposed as a solution to the lack of electricity in Third World rural areas that are beyond the reach of conventional power grids. A SSPS consists of a photovoltaic solar module which charges an ordinary storage battery. The battery can then be used for domestic lighting and television and radio broadcasting reception. The technology can be developed for wider uses such as refrigeration, heating and small business activities.

Energy use, Developing countries, Rural population, Photovoltaic power generation

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Cyclic transmembrane charge transport by pyrylium ions in a vesicle-based photocatalytic system

Article Abstract:

Solar energy is attracting increased interest as a renewable energy source for photocatalytic production of chemicals. Some systems are not suitable for high-throughput applications. However an alternative mechanism for rapid electroneutral charge transport, is based on pyrylium cations which undergo reversible ring-opening hydrolysis to form neutral diketones.

Research, Electron transport

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