recovery properties of hydrogen gas sensor with pdtitanate

... shows the recovery properties of sensors with UV radiation for 50 h. When UV light was illuminated on the catalytic sensor, a remarkable difference in the recovery properties of the sensors was ... nanotubes hydrogen sensor from sensor poisoning through UV photo-catalytic oxida- tion of the contaminants was reported [16]. The recovery properties of catalytic type...

Ngày tải lên: 20/03/2014, 13:06

... function of operating temperature of the PtO 2 -doped SnO 2 sensors with varying PtO 2 doping content. Please cite this article in press as: N. Van Hieu, et al., Gas- sensing properties of tin oxide ... (R a ). This fact is a proof of the reversibilityof theprocess. Thestepwise decrease of the electrical resistance of the film is very consistent with an increas- ing amount...

Ngày tải lên: 19/03/2014, 16:48

... reports of the involvement of peroxidase–H 2 O 2 systems in later stages during the oxidation of indolequinone precursors of eumelanin and benzothiazinylalanine precursors of pheomelanin [5–10]. Of ... and tyrosinase-mediated oxidations of DOPA, with and without cata- lase. Peak profiles represent levels of DOPA in 5 lL samples of separate reaction mixtures after 5 min incu...

Ngày tải lên: 07/03/2014, 17:20

... samples contained globular particles with an average diameter of 24 nm, often decorated with stain, as well as clustered deposits of fibrils with an average diameter of 6 nm (Fig. 6C). FX1RP Nt-NES ... FXR2P. The secondary structure of FXR1P Nt-NES was first Fig. 3. Spectroscopic study of temperature-induced conformational changes of FMRP. (A) Far-UV CD spectra of Nt-KH1 of...

Ngày tải lên: 14/03/2014, 23:20

... xxx Keywords: Nitrogen dioxide Ammonia Gas- sensing properties PbS Sensor abstract In the present paper, the gas- sensing characteristics of novel gas sensors based on PbS were investigated. The sensors exhibited high ... the baseline resistance of the sensor in dry air and R g is the resistance value in the presence of a gas to be measured. To examine reproducibility of t...

Ngày tải lên: 20/03/2014, 13:06

... micro -gas sensor was fabricated and the NO 2 gas- sensing as well as electrical properties have been investigated. The film had nano-sized grains, porous structure with a relative surface area of ... areas of SnO 2 sensors and their sensitivities to 500 ppm of H 2 . Accordingly, meso- porous WO 3 with a higher surface area provides more surface adsorption sites for the reactio...

Ngày tải lên: 20/03/2014, 13:07

... Decolorization of Dye with Iron Oxide Catalysed Decomposition of Hydrogen Peroxide Joonseon Jeong, Jeyong Yoon School of Chemical Engineering, College of Engineering, Seoul ... oxide(FeOOH) catalysed decomposition of hydrogen peroxide. FeOOH was selected as iron oxide. The effect of FeOOH concentration, H 2 O 2 concentration, the presence of radical sc...

Ngày tải lên: 05/09/2013, 08:40

... Control of Brushless DC Motor with Non-sinusoidal Back-EMF without position sensor Abstract: In this paper, the position sensorless direct torque and indirect flux control (DTIFC) of BLDC ... the validity and effectiveness of the sensorless three-phase conduction DTC of a BLDC motor drive with six-switch inverter. 2. The Proposed Sensorless DTC of Four-Switch BL...

Ngày tải lên: 03/01/2014, 19:45

... examine the properties of the ventricle at end-diastole. Imagine the ventricle frozen in time in a state of complete relaxation. We can think of the properties of this ventricle with weak, relaxed ... measure of the arterial properties and therefore is not useful within the context of indexing the afterload of the ventricular chamber. Page 18 of 23 IX. Q...

Ngày tải lên: 22/02/2014, 09:20

... hence µ f is a measure of maximal entropy. 3. First ergodic properties of µ f In this section we adapt the work of Briend and Duval [BD 01] to establish some ergodic properties of µ f . Theorem 3.1. ... Press, New York (1969). Annals of Mathematics Ergodic properties of rational mappings with large topological degree By Vincent Guedj RATIONAL MAPPINGS WIT...

Ngày tải lên: 06/03/2014, 08:21