the present paper explores the impact of an on-board hydrogen harvesting system (fuel reformer) on the overall efficiency of a fuel-cell powered vehicle. various methods of hydrogen production for automotive applications have been discussed first. as the hydrogen production is one of the major challenges for application of proton exchange membrane (pem) fuel cells, especially in vehicular indus...

BACKGROUND Plant extracts mixture (PEM) and its individual constituent plant extracts(Psidium sp., Mangifera sp., Mentha sp.) are known to have an anti-adhering effect towards oral bacteria in the single-species biofilm. To date, the adhering ability of the early and late plaque colonisers (Streptococcus sanguinis and Streptococcus mutans) to PEM-treated experimental pellicle have not been inve...

In system identification, it is often difficult to find a physical intuition to choose a noise model structure. The importance of this choice is that, for the prediction error method (PEM) to provide asymptotically efficient estimates, the model orders must be chosen according to the true system. However, if only the plant estimates are of interest and the experiment is performed in open loop, ...

Through this article, a novel random structure is depicted to shape the uncertainty result of the active and reactive loads in the DSTATCOM allocation and problem in sizing. The planned technique has 2m+1 point approximation method (PEM) to capture the random associated with the anticipated fault of the loads. The aims are minimization of the entire active power losses which lessen the voltage ...

The blind source separation problem is studied in this paper using a system identiication approach. Two unmeasurable source signals are mixed by means of a channel system resulting in two measurable output signals. The measurable signals can be used in a TITO (Two Inputs Two Outputs) system identiication approach in order to extract the sources. The system to be identiied can be described by tw...

The potential for using polyelectrolyte multilayers (PEMs) to provide chromatographic functionality on continuous silica networks created from sol-gel chemistry has been evaluated by capillary electrochromatography (CEC). Construction of the PEM was achieved by flushing the column with polyelectrolytes of alternative charge, with variation of the properties of the exposed polyelectrolyte provid...

Polioencephalomalacia (PEM), also known as cerebrocortical necrosis, is an important neurologic disease that affects ruminants. Thiamine deficiency and sulfur (S) toxicity have been well recognized as major etiological factors. The mechanism of thiamine deficiency associated PEM has been well elucidated. However, the role of S in PEM pathogenesis remains unclear, although the relationship betwe...