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Abstract The ozone (O3) decomposition in the pre-heat zone of flames can initiate and accelerate the chain-branching reactions. In the present study, formaldehyde (CH2O) was investigated by both experiment and simulation methods in methane/air laminar premixed flames under atmospheric conditions. The formaldehyde concentration profiles in the flames were measured with CH2O-PLIF. When 4500 ppm of o

Values among individuals having client-related jobs and organisations in client related sectors might differ from values in their counterparts in jobs and sectors that are not client-related. It is possible that jobs that include interactions with other people demand more developed moral thinking. This report is a description of differences that has been found in a comparison between a ward in the

En redogörelse för och diskussion av debattklimatet (olika positioner) i Saudiarabien mot bakgrund av terrorvågen i början av 2000-talet.

Lunds universitet Rättssociologiska institutionen Arbetsmiljöarbetet vid Rättssociologiska institutionen Perioden 2015-2017 Fastställd av Rättssociologiska institutionens styrelse 2015-04-15, Dnr. STYR 2015/466 Innehållsförteckning 1. Arbetsmiljöarbetet vid Rättssociologiska institutionen 2. Handlingsplan för perioden 2015 – 2017 3. Ansvar och delegering av arbetsmiljöuppgifter 4. Information och

https://www.soclaw.lu.se/sites/soclaw.lu.se/files/arbetsmiljoplan-rattssociologiska-inst-2015-2017.doc - 2026-05-16

Quantitative measurements of CH4 mole fractions at different HAB in the flame were realized by a calibration measurement in a low pressure gas flow of N2 with a small admixture of known amount of CH4. A comprehensive study of the collision effects on the IRPS signal was performed in order to quantify the flame measurement. The concentration and temperature measurements were found to agree reasonab

By aiming to establish single-ended standoff combustion diagnostics, bidirectional lasing emissions of atomic hydrogen at 656 nm wavelength have been generated via two-photon resonant excitation by focusing 205 nm femtosecond laser pulses into a premixed CH4/O2 flame. The forward lasing strength is approximately one order of magnitude stronger than that of the backward one, due to the geometry of

The current work aims at investigating the detailed spatial structure of the thin plasma column of a gliding arc (GA) discharge extended in N2-CH4 gas mixtures, using visualization techniques. The GA discharge was operated at up to 5 atm in a high-pressure vessel with extensive optical access. The results show that the emission intensity from the plasma column increased tenfold with the addition o

A laser-based technique for recording absolute air-fuel ratio maps in a single-laser pulse in combustion devices, for instance, prior to ignition in internal combustion engines, is demonstrated. The method is based on an in situ pulse-to-pulse calibration of two-dimensional laser-induced fluorescence (LIF) images of relative fuel distributions by a point Raman measurement. A single excimer laser p