Microscale Gas Chromatography with Microsensor Array Detection: Challenges and Prospects

Microfabricated passive vapor preconcentrator/injector designed for microscale gas chromatography.

The design, fabrication, and preliminary testing of a micromachined-Si passive vapor preconcentrator/injector (μPPI) are described. Intended for incorporation in a gas chromatographic microsystem (μGC) for analyzing organic vapor mixtures, the μPPI captures vapors from the air at a known rate by means of passive diffusion (i.e., without pumping) and then desorbs the vapor sample thermally by me...

Microfabricted passive preconcentrator/injector designed for microscale gas chromatography

Challenges and Prospects of European Railways

In the present paper, challenges and prospects of the European railways, along with a proposal for a new strategy policy and specific measures are presented. The declining course of European railways concerning traffic and revenues is first analyzed. Conditions to introduce intra - modal competition are surveyed, among them separation of infrastructure fro...

African Anti-Corruption Agencies: Challenges and Prospects

Corruption has become an issue of major political and economic relevance in recent years. This has led to a resurgence of interest in analyzing the phenomenon and the diverse forms that it assumes in developing politics with an expectation that democratization and economic liberation offer potential routes to dealing with the problem. Anti-corruption strategies range from institutional reforms ...

Gas chromatography with Fourier transform infrared and mass spectral detection

For a number of years, the combination of gas chromatography with infrared and mass spectral detection has been of interest. Numerous applications have been reported and discussed in previous reviews. The present brief review covers recent developments in this area since 1997. It is clear that advances in computer technology combined with those in instrumentation make it only a matter of time u...