Oxygen Reduction Reaction (ORR) performance of iron and nitrogen co-doped porous carbon nanoparticles (Fe-NPC) with various physical and (electro) chemical properties have been investigated. Fe-NPC nanoparticles are synthesized via a facile soft-templating procedure by using Iron (III) chloride hexa-hydrate as iron precursor and aminophenol-formaldehyde resin as both carbon and nitrogen precurs...

• PCE removed continuously using packed column and jet-mixer electro-scrubbers. Important chemical reactivity of PCE. No significant improvement with the addition cobalt mediators. Better performance jet-mixers In this work, removal perchloroethylene (PCE) continuous-operation electro-scrubbers is evaluated. Two types were made by combining a jet mixer or absorption single flow-cell. The absorb...

Most electrowetting and liquid crystal optical devices are created by standard planar microfabrication. Arrayed electrowetting microprisms are a newer approach that offers unique performance, but which requires a challenging non-planar microfabrication process. This paper reviews a full description of a scalable fabrication process for an ∼1500 element array of ∼150 μm size electrowetting micro...

Membrane reactors are currently under extensive research and development. Hardly any concept however is realized yet in practice. Frequently, forgotten as membrane reactors are electro-catalyic membrane reactors where electrodes perform chemical conversations and membranes separate the locations of conversion. In this chapter we extensively describe a technology where the membrane itself is cat...

BACKGROUND Bipolar electro-coagulation has a reported efficacy in treating epilepsy involving functional cortex by pure electro-coagulation or combination with resection. However, the mechanisms of bipolar electro-coagulation are not completely known. We studied the acute cortical blood flow and histological changes after bipolar electro-coagulation in 24 patients with intractable temporal lobe...

This paper deals with the sound quality of electro-larynx devices, which is one method of communication for people who have lost their larynx. Current commercially available devices are characterized by an unnatural, mechanical sound. Assuming the availability of a linear transducer several alternative excitation signals are compared to the sound of a state-of-the-art electro-larynx. The signal...

A programme of experiments was conducted to study the use electro-kinetic technique transport a stabilising chemical agent through clay soil. The experimental tests were undertaken on soil in special apparatus by applying constant voltage gradient across sample introduce solution calcium chloride (CaCl 2 ) with different concentrations variations shear strength resulting from process determined...

In this work, we studied the electro-optical properties of high-aligned carbon nanotubes deposited at room temperature. For this, we used the High Density Plasma Chemical Vapor Deposition system. This system uses a new concept of plasma generation: a planar coil is coupled to an RF system for plasma generation. This was used together with an electrostatic shield, for plasma densification, there...

introduction: there are several methods for evaluating microleakage in dentistry, for example dye or bacterial leakage, electro-chemical methods, radioisotope labeling and fluid filtration. the purpose of this study was to assemble the fluid filtration system for quantitative evaluation of microleakage in dental materials. materials and methods: the roots were connected to a tube filled with an...

Methods have been developed for chemical transformation and electro-transformation (electroporation) of vegetative cells of Bacillus anthracis with supercoiled plasmid DNA. Chemical transformation was dependent on incubation in Tris/HCl with osmotic support and transformation with plasmid DNA was effected by treatment with polyethylene glycol 3350. Maximum transformation frequencies were 3.8 x ...