highly sensitive and selective ammonia gas sensor - solid state
highly sensitive and selective ammonia gas sensor - solid state
Ngày tải lên: 19/03/2014, 16:48
highly sensitive thin film nh3 gas sensor operating at room
... composite-based gas sensors operated at room temperature are still lacking. The NH 3 gas sensors based on CNTs [25,26] and SnO 2 [27–31] have been extensively investigated. The SnO 2 -based gas sensors ... p-type semiconductor [12–15,25–28]. Comparing with the CNTs-based NH 3 sensor [27,29] and the SnO 2 -based NH 3 sensor [29–31] reported previously, as-synthesized com- posites...
Ngày tải lên: 19/03/2014, 16:48
a selective nh3 gas sensor based on fe2o3–zno nanocomposites at room temperature
... nanocomposite thin films. 3.4. Gas response and recovery characterization Fig. 6 shows the gas response of the ZnO-based gas sen- sors including a pure nano-crystalline ZnO film and the four Fe 2 O 3 –ZnO ... of the gas sensors based on: (a) 2% and (b) 4% Fe 2 O 3 –ZnO nanocomposites. Table 1 summarizes the sensor signal (response magnitude), response time and recovery time of...
Ngày tải lên: 19/03/2014, 16:47
ammonia gas sensor based on electrosynthesized polypyrrole films
... incorpo- rated in gas sensors for the detection of ethanol gas [54], benzene, xylene and toluene [55]. Other studies focused on ammonia gas sensors using polypyr- role as sensitive layer. Thus, an ammonia ... NH 3 vapors and (b) schematic drawing of the ammonia gas sensor. 2. Experimental 2.1. Fabrication of gas sensors The gas sensors were fabricated using microsyst...
Ngày tải lên: 19/03/2014, 16:47
Báo cáo khoa học: Cleavage site analysis of a serralysin-like protease, PrtA, from an insect pathogen Photorhabdus luminescens and development of a highly sensitive and specific substrate pdf
... and tert-butyl for Ser and Tyr. 4-( 2¢,4¢-Dimethoxyphenyl-Fmoc- aminomethyl)phenoxy (Rink amide), 2-chlorotrityl chloride and N-( 4-[ 4¢(dimethylamino)phenylazo]benzoyloxy)succini- mide (Dabcyl-OSu) ... Ac-EVYAAE-NH 2 25.5 a 25.1 a nd Pa7 Ac-ELYLVE-NH 2 34.0 28.9 22.0 Pa8 Ac-ELYAVE-NH 2 30.4 28.9 nd Pa9 Ac-ELYLLE-NH 2 36.3 28.9 25.0 Pa10 Ac-ELYLAE-NH 2 32.3 28.9 20.2 Pa11 Ac-ELYALE-...
Ngày tải lên: 23/03/2014, 09:20
crystalline structure, defects and gas sensor response
... temperature and 300 8C) in order to better relate structural and gas- sensing properties. Sensors and Actuators B 93 (2003) 475–485 * Corresponding author. Tel.: þ3 4-9 3 4-0 2 1-1 46; fax: þ3 4-9 3 4-0 2 1-1 48. E-mail ... understand the sensor response to NO 2 and H 2 S of gas sensors based on differently annealed WO 3 . Thick-film gas sensors based on differently...
Ngày tải lên: 19/03/2014, 16:47
gas sensor response of pure and activated wo3 nanoparticle
... of operating temperature for as-deposited Al- activated WO 3 films exposed to 10 ppm H 2 S (right-hand scale), 5 ppm NO 2 (left-hand scale), and 100 ppm CO (left-hand scale). The lines are guide ... response of an as-deposited Au-activated WO 3 sensor upon CO (50 and 100 ppm) and NO 2 (5 and 10 ppm) exposures at 700 K operating temperature. 132 L.F. Reyes et al. / Sensors and Actua...
Ngày tải lên: 19/03/2014, 16:48
tio2 thin film gas sensor for monitoring ammonia
... the sensor measured in air and G g is the conductance of the sensor in the presence of the test gas. 3. Results and discussions 3.1. Structure and microstructure Structure and the structure-related ... of the TiO 2 thin film gas sensor was studied for sensing ammonia. © 2006 Elsevier Inc. All rights reserved. Keywords: TiO 2 ; Thin films; Gas Sensor; Sputtering; Ammoni...
Ngày tải lên: 20/03/2014, 13:11
DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf
... components alpha-Chlordane 406 510 3-7 1-9 gamma-Chlordane 406 510 3-7 4-2 trans-Nonachlor 440 3976 5-8 0-5 Chlorneb 206 267 5-7 7-6 Chlorobenzilate 324 51 0-1 5-6 Chlorpropham 213 10 1-2 1-3 Chlorothalonil 264 189 7-4 5-6 525. 2-3 0 13.2.1 ... 20 7-0 8-9 Benzo[a]pyrene 252 5 0-3 2-8 Benzo[g,h,i]perylene 276 19 1-2 4-2 Bromacil 260 31 4-4...
Ngày tải lên: 22/03/2014, 14:20
Tài liệu Báo cáo khoa học: PCR detection of nearly any dengue virus strain using a highly sensitive primer ‘cocktail’ ppt
... (which detects both DENV-1 and DENV-2) were 2.0 and 0.9% for DENV-1 and DENV-2, respec- tively, and 1, 1.8, 4.4 and 3.4% for groups 2 (2G2P5), 3 (1G3P6), 4 (1G4P217) and 5 (1G5P30), respectively, with ... DENV and human RNA Primers were further tested with total RNA extracted from DENV-1 (Piura, Peru )-, DENV-2 (New Guinea C )-, DENV-3 (Asuncion, Paraguay )- or DENV-4 (D...
Ngày tải lên: 14/02/2014, 19:20