Focus

Integrated gas chromatograph

“…Later the instrument became widely used under the name of Hewlett Packard (Agilent USA, http://www.chem.agilent.com). At the moment, few projects devoted to the development of integrated gas chromatographs exist in Europe [2,3], although many companies have been developing their own custom-designed gas meters based on the solutions used by Agilent. The lack of an independent market of key components and/or assembled portable gas chromatographs is the most important barrier blocking wider application of miniature gas chromatographs for on-line analysis in environment protection, gas systems electroengineering systems, etc.…”

Microfluidic ion-sensing devices

“…However, there are many potential uses of -TAS in areas such as environmental analysis, space applications, and medical diagnostics, where target analytes are small molecules and ionic species [18,19]. For instance, in the areas mentioned, tremendous amounts of time, reagent, and sample can be saved by employing microfluidic devices to perform multianalyte or array detection of important species.…”

Parametric study on instabilities in a two-layer electromagnetohydrodynamic channel flow confined between two parallel electrodes

“…For example, increase in mobility of a fluid may be achieved by stratification of a highly mobile fluid or mixing of two or more fluids in transit may be designed for emulsification or heat and mass transfer applications. In that regard, magneticfield-driven micropumps are in increasing demand due to their long-term reliability in generating flow, absence of moving parts, low power requirement, flow reversibility, feasibility of buffer solution manipulation, and mixing efficiency [7][8][9][10][11][12][13]. MHD flows inside channels can be propelled in many different ways, for example, in electromagnetohydrodynamics (EMHD) axial flow along a channel is generated by the interaction between the magnetic field and an electric field acting normal to it [1, 4,5] as shown schematically in Fig.…”