Results 21 to 30 of about 1,141,747 (296)

Pumping of the 4.8 GHz H$_{\text{2}}$CO masers and its implications for the periodic masers in G37.55+0.20 [PDF]

open access: yes, 2014
Periodic or regular flaring of class II methanol masers in nine high mass star forming regions is now a well established phenomenon. Amongst the nine star forming regions, G37.55+0.20 is the only case at present where apart from the presence of a ...
van der Walt, D. J.
core   +3 more sources

Reactivity of Larch and Valonia Tannins in Synthesis of Tannin-Formaldehyde Resins

open access: yesBioResources, 2016
Tannin-formaldehyde resins (TFR) were prepared by copolycondensation of tannins (larch tannin or valonia tannin) and formaldehyde. The performances of TFR and the free formaldehyde residue in the system during the course of reaction were tested. Chemical
Jiongjiong Li   +4 more
doaj   +1 more source

Study on the Characteristics of Formaldehyde Pollution in Typical Teaching Machine Room [PDF]

open access: yesE3S Web of Conferences, 2020
This study focused on measuring the pollution characteristics, the monthly and seasonal variation rule of formaldehyde in the teaching machine room of Guangxi Normal University from March 2016 to February 2018, and the correlation between formaldehyde ...
Yang Pengpeng   +9 more
doaj   +1 more source

A measurement strategy for non-dispersive ultra-violet detection of formaldehyde in indoor air: Spectral analysis and interferent gases [PDF]

open access: yes, 2015
We have conducted an extensive review of published spectra in order to identify a region with potential for detection of formaldehyde in indoor air.
Davenport, John   +3 more
core   +1 more source

Contributions to local- and regional-scale formaldehyde concentrations [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
Reducing ambient formaldehyde concentrations is a complex task because formaldehyde is both a primary and a secondary air pollutant, with significant anthropogenic and biogenic sources of volatile organic compound (VOC) precursor emissions.
L. A. J. Bastien   +4 more
doaj   +1 more source

Experimental research on formaldehyde emission characteristics from glubam by climate chamber test [PDF]

open access: yesSustainable Structures, 2023
Glued laminated bamboo (glubam) is a type of bamboo-based lamina, and manufactured by pressure lamination of phenol-formaldehyde saturated bamboo strips under elevated temperature.
Bo Shan   +6 more
doaj   +1 more source

Visualization of the homogeneous charge compression ignition/controlled autoignition combustion process using two-dimensional planar laser-induced fluorescence imaging of formaldehyde [PDF]

open access: yes, 2003
The paper reports an investigation into the HCCI/CAI combustion process using the two-dimensional PLIF technique. The PLIF of formaldehyde formed during the low-temperature reactions of HCCI/CAI combustion was exciting by a tunable dye laser at 355nm ...
Bäuerle B.   +3 more
core   +1 more source

Formaldehyde stress responses in bacterial pathogens

open access: yesFrontiers in Microbiology, 2016
Formaldehyde is the simplest of all aldehydes and is highly cytotoxic. Its use and associated dangers from environmental exposure have been well documented.
Nathan Houqian Chen   +3 more
doaj   +1 more source

SPR Gas Sensitivity of Formaldehyde was Detected by Ag/TiO2 Thin Films

open access: yesJournal of Harbin University of Science and Technology, 2020
In order to study the gas sensitivity of Ag/TiO2 composite film to formaldehyde gas, the surface plasmon resonance (SPR) technology was adopted to build the experimental test platform, and the test results were obtained.
JIN Ye lu   +3 more
doaj   +1 more source

Toward Greener and Sustainable Alternatives to Formaldehyde-Based Resins: A Literature Review of Their Types, Synthesis Methods, and Applications [PDF]

open access: yesE3S Web of Conferences
Formaldehyde-based resins, such as urea-formaldehyde (UF), phenol-formaldehyde (PF), and melamine-formaldehyde (MF), are thermosetting polymers widely used in various industrial applications.
Kumoro Andri Cahyo   +5 more
doaj   +1 more source

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