Exhaust Gas Analysis for Automobile Quality Control by a New Non-Dispersive Infrared Gas Analyzer

1982 ◽  
Author(s):  
Isamu Usami ◽  
Hidekatu Miyake ◽  
Osamu Saitoh ◽  
Kozo Ishida ◽  
Kimio Miyatake
Keyword(s):  
Quality Control ◽  
Gas Analysis ◽  
Exhaust Gas ◽  
Gas Analyzer ◽  
Infrared Gas Analyzer

Application to Woody Plants of a Rapid Method for Determining Leaf CO2 Compensation Concentrations

1973 ◽  
Vol 3 (2) ◽  
pp. 237-242 ◽  
Author(s):  
D. I. Dickmann ◽  
D. H. Gjerstad
Keyword(s):  
Rapid Method ◽  
Woody Plants ◽  
Woody Species ◽  
Moisture Stress ◽  
Gas Analysis ◽  
Deionized Water ◽  
Controlled Environment ◽  
Gas Analyzer ◽  
Leaf Ontogeny ◽  
Infrared Gas Analyzer

A rapid method of determining CO2 compensation concentrations was developed and applied to woody plants. Whole leaves, needle fascicles, and twigs were excised, the cut ends inserted in a vial of deionized water, and the assembly placed in a Mylar bag. The bag was filled with air containing ca. 400 p.p.m. CO2. After 1 h in a growth chamber (24 °C, 3800 ft-c (40 660 lux)), the air was expelled from the bag through an infrared gas analyzer. Compensation concentrations determined by this method agreed with values obtained by using conventional closed-circuit gas analysis. The method was successfully applied to 14 gymnosperm and 55 angiosperm woody species and clones, including field-grown plants and rooted cuttings grown under controlled environment. Variation among species was small, compensation concentrations usually falling between 55 and 65 p.p.m. CO2, the range associated with C3 plants. The influence of temperature, moisture stress, and leaf ontogeny on leaf CO2 compensation also was studied.

scholarly journals Silicon Oxide Etching Process of NF3 and F3NO Plasmas with a Residual Gas Analyzer

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3026
Author(s):  
Woo-Jae Kim ◽  
In-Young Bang ◽  
Ji-Hwan Kim ◽  
Yeon-Soo Park ◽  
Hee-Tae Kwon ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Silicon Oxide ◽  
Gas Analysis ◽  
Gas Analyzer ◽  
Dc Offset ◽  
Cleaning Performance ◽  
Oxide Etching ◽  
Residual Gas ◽  
Etch Rates ◽  
Very High

The use of NF3 is significantly increasing every year. However, NF3 is a greenhouse gas with a very high global warming potential. Therefore, the development of a material to replace NF3 is required. F3NO is considered a potential replacement to NF3. In this study, the characteristics and cleaning performance of the F3NO plasma to replace the greenhouse gas NF3 were examined. Etching of SiO2 thin films was performed, the DC offset of the plasma of both gases (i.e., NF3 and F3NO) was analyzed, and a residual gas analysis was performed. Based on the analysis results, the characteristics of the F3NO plasma were studied, and the SiO2 etch rates of the NF3 and F3NO plasmas were compared. The results show that the etch rates of the two gases have a difference of 95% on average, and therefore, the cleaning performance of the F3NO plasma was demonstrated, and the potential benefit of replacing NF3 with F3NO was confirmed.

scholarly journals Carbon Dioxide Capture Using a Zeolite Molecular Sieve Sampling System for Isotopic Studies (13C and 14C) of Respiration

Radiocarbon ◽  
2005 ◽  
Vol 47 (3) ◽  
pp. 441-451 ◽  
Author(s):  
S M L Hardie ◽  
M H Garnett ◽  
A E Fallick ◽  
A P Rowland ◽  
N J Ostle
Keyword(s):  
Mass Spectrometry ◽  
Molecular Sieve ◽  
Ecosystem Respiration ◽  
Isotope Ratio Mass Spectrometry ◽  
Gas Analyzer ◽  
Sampling System ◽  
Air Stream ◽  
Isotopic Studies ◽  
Isotope Studies ◽  
Infrared Gas Analyzer

A method for collecting an isotopically representative sample of CO2 from an air stream using a zeolite molecular sieve is described. A robust sampling system was designed and developed for use in the field that includes reusable molecular sieve cartridges, a lightweight pump, and a portable infrared gas analyzer (IRGA). The system was tested using international isotopic standards (13C and 14C). Results showed that CO2 could be trapped and recovered for both δ13C and 14C analysis by isotope ratio mass spectrometry (IRMS) and accelerator mass spectrometry (AMS), respectively, without any contamination, fractionation, or memory effect. The system was primarily designed for use in carbon isotope studies of ecosystem respiration, with potential for use in other applications that require CO2 collection from air.

Exhaust Gas Analysis as a Tool for Measuring Fuel-Air Ratios

1967 ◽  
Author(s):  
Walter S. Fagley ◽  
Richard R. Nunez
Keyword(s):  
Gas Analysis ◽  
Exhaust Gas

A Fast Exhaust-Gas Analyzer for the ITER Fusion Experiment Divertor

2010 ◽  
Vol 38 (3) ◽  
pp. 315-319 ◽  
Author(s):  
C.C. Klepper ◽  
E.P. Carlson ◽  
J.J. Moschella ◽  
R.C. Hazelton ◽  
M.D. Keitz ◽  
...  
Keyword(s):  
Exhaust Gas ◽  
Gas Analyzer

scholarly journals Experimental investigation on performance, smoke and exhaust gas analysis of four stroke diesel engine using pongomia/neem oil biodiesel

2021 ◽  
Vol 12 (4) ◽  
pp. 23-40
Author(s):  
Naresh Kumar Konada ◽  
K.N.S. Suma ◽  
B.B. Ashok Kumar
Keyword(s):  
Diesel Engine ◽  
Energy Demand ◽  
Alternative Fuels ◽  
Gas Analysis ◽  
Load Test ◽  
Transport Sector ◽  
Exhaust Gas ◽  
Neem Oil ◽  
Fuel Blends ◽  
Ci Engines

Increase in energy demand, stringent emission norms and depletion of oil resources led to the discovery of alternative fuels forinternal combustion engines. Many alternative fuels like alcohols, petroleum gas, and compressed natural gas have been alreadycommercialized in the transport sector. In the present work, Pongomia oil and Neem oil are blended with diesel and used as analternate fuel for CI engines. The Pongomia oil and Neem oil can be converted into bio diesel using a chemical process of trans- esterification.Different proportions of fuel blends have been produced by the process of blending bio diesel consisting of 10%, 15%, 20%, 25%, and 30% (B10, B15, B20, B25, B30). The fuel properties of each blend are determined. The load test along with smoke and exhaust gas analysis of 4- Stroke Diesel engine using the blends of Pongomia oil and Neem oil with diesel are done in this study. The performance parameters of an engine are calculated for different blends. The sustainability of using alternate fuels in Diesel engines, especially the potential use of Pongomia oil and Neem oil as biodiesel have been brought to the fore through this work and suitable blends of bio diesel is suggested from the results. Keywords: 4-Stroke Diesel Engine, Pongomia and Neem oil Bo diesel, Performance, Smoke and exhaust gas analysis.

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