low-temperature h2s sensors based on ag-doped fe2o3 nanoparticles
low-temperature h2s sensors based on ag-doped fe2o3 nanoparticles
... online at www.sciencedirect.com
Sensors and Actuators B 131 (2008) 183–189
Low-temperature H
2
S sensors based on Ag-doped
␣-Fe
2
O
3
nanoparticles
Yan Wang, Yanmei Wang, Jianliang Cao, Fanhong ... generally mentioned earlier, the gas-sensing mechanism
of ␣-Fe
2
O
3
-based sensors belongs to the surface-controlled
type, which is based on the change in conductance of the...
h2s sensors based on tungsten oxide nanostructures
... X-ray diffraction (Cu K␣ radiation), scanning
electron microscopy (SEM, LEICA S440i), field emission scan-
ning electron microscopy (FESEM with a NOVA NANOSEM
600), transmission electron microscopy ... highest response found is 757 at 250
◦
C, and
29 at 40
◦
C. The variation in response of the WO
3
nanoparticles
with the concentration (1–1000 ppm) of H
2
Sat250
◦
C is shown
in Fig. 4b. The...
semiconductor gas sensors based on nanostructured tungsten oxide
... vaporization of
metal tungsten in a reactive atmosphere was used to
produce UFP powder of WO for screen printing.
3
A drawback of the conventional semiconductor gas
sensors is their operation at ... near-
equilibrium conditions with only a weak tendency to-
wards agglomeration. The growth can be determined by
first-passage-time dynamics in the vapor zone and the
wx
size distribution is narro...
xps studies of active elements surface of gas sensors based on wo3nanoparticles
... work conditions important is the exploration
of the state of sensor’s surface after long contact with air at room
temperature and influence of short-time anneal.
We synthesized nanodisperse nonstoichiometric ... explo-
sion of wires (EEW) at different proportions between argon
and oxygen. Synthesis of nanoparticles by EEW-method [12,13]
belongs to high-energy methods of synthesis and allows...
Báo cáo khoa học: Piezoelectric sensors based on molecular imprinted polymers for detection of low molecular mass analytes potx
... Polymerization format Monomer selection Medium selection Polymerization conditions
Covalent Bulk polymerization Combinatorial screening Organic solvent Cross-linking agent selection
Noncovalent ... [17,53–55].
Application areas of MIP–QCM biosensors
The three most common application areas for MIP–
QCM sensors are clinical diagnosis, environmental
monitoring and control of enantiomeric separ...
a selective nh3 gas sensor based on fe2o3–zno nanocomposites at room temperature
... response time and recovery time, it can be
concluded that Fe:Zn = 2% is the best composition.
Fig. 6. Response of gas sensors based on the Fe
2
O
3
–ZnO nanocomposites with
different compositions ... sensor based on 2% Fe
2
O
3
–ZnO nanoparticle.
3.5. Reproducibility of gas sensor based on 2%
Fe
2
O
3
–ZnO nanoparticles
Fig. 7 shows the reproducibility of the sensor based o...
Báo cáo y học: "Gain of a 500-fold sensitivity on an intravital MR Contrast Agent based on an endohedral Gadolinium-Cluster-Fullerene-Conjugate: A new chance in cancer diagnostics"
... Gd concentrations. This
modularly designed contrast agent represents a new tool for improved monitoring and
evaluation of interventions at the gene transcription level. Also, a widespread monitoring ... Ligation reaction based on the Diels Alder
Reaction with invers electron demand. [EP 06 012 414.6].
6-10-2006.
46. Reppe W, Schlichting O, Klager K, et al. Cyclisierende
Polymerisati...
Metaphor, based on the association of similarity, is one of the two basic types of semantic transference that have been an interest for many linguistic researchers
... definitions and 9 skeptical
An investigation into the role of metaphor in description of emotion in poetic discourse
17
statements about the concept of emotion concluding that there is little consistency ... interactive functions: statements are expressions which give
An investigation into the role of metaphor in description of emotion in poetic discourse
23
information, questions are expre...
Consolidation Chareteristics based on a direct analytical solution of the Terzaghi Theory
... of consolidation at 50% consolidation; this
method requires the determination of the initial and final
compressions corresponding to 0 and 100%
consolidation, respectively. The determination ... realistic
determination of the coefficient of consolidation (Olson,
1986; Robinson, 1999).
SUMMARY AND CONCLUSIONS
In the present study, a new method is developed for
Consolidation Charact...
Từ khóa:
- chulalongkorn university in thailand this smalllab kit was created as a result of the research project entitled chemistry laboratory based on chemical safety and pollution minimization sponsored by thai research fund rdg 3072543 one of the outcomes of t
- relationships based on multiple columns
- lexical transfer based on bilingual signs
- resource based on lmf
- system based on java
- 1by robert pickeringforeword by daniel jebarajpartially based on beginning f by robert pickering