Results 11 to 20 of about 6,122 (184)

Comparison of tetramethylammonium hydroxide (TMAH), trimethylsulfonium hydroxide (TMSH), and trimethylphenylammonium hydroxide (TMPAH) thermochemolysis for in situ space analysis of organic molecules in planetary environments

, 2023
International audienceOne of the main objectives of present and future space exploration missions dedicated to astrobiology is the detection of organic molecules of interest for life (e.g. amino and fatty acids). With this aim, a sample preparation and a
He, Y., Williams, A.J., M.G. Trainer, Trainer, M.G., A.J. Williams, D. Boulesteix, Y. He, Szopa, Cyril, C. Szopa, J.C. Stern, Buch, Arnaud, Stern, J.C., Boulesteix, David, Freissinet, Caroline, C. Freissinet, A. Buch   +15 more
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Murchison Meteorite Analysis using Tetramethylammonium Hydroxide (TMAH) Thermochemolysis under Simulated Sample Analysis at Mars (SAM) Pyrolysis-Gas Chromatography-Mass Spectrometry Conditions

, 2023
Agilent MassHunter py-GC-MS data in support of the article: Murchison Meteorite Analysis using Tetramethylammonium Hydroxide (TMAH) Thermochemolysis under Simulated Sample Analysis at Mars (SAM) Pyrolysis-Gas Chromatography-Mass Spectrometry ...
Angel Mojarro (3364124)
core   +1 more source

Mortality from Dermal Exposure to Tetramethylammonium Hydroxide

Journal of Occupational Health, 2008
. However, industrialTMAH is in the form of a concentrated strong alkalineand thus might have severe hazardous effects. We herepresent a mortality case caused by dermal exposure toindustrial TMAH at work.CaseA 22-yr-old male engineer was accidentally drenchedwith concentrated TMAH solution (25%, pH 13.5) whileconducting routine examination of the pipe ...
Wu, Chen-Long, Su, Shih-Bin, Chen, Jin-Luh, Lin, Hung-Jung, Guo, How-Ran   +4 more
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Elimination of Nanorods by Tetramethylammonium Hydroxide for the Fabrication of AlGaN-based UV-C Micro-LED Array

, 2022
Short-wavelength ultraviolet (UV-C) micro light-emitting diode (Micro-LED) array greatly benefits the optogenetic applications in neuroscience, optical communications, and maskless lithography.
Zhang, Ke, Feng Feng, Ka-Wah Chan, Feng, Feng, Chan, Ka Wah, Kwok, Hoi Sing, Hoi-Sing Kwok, Yibo Liu, Zhaojun Liu, Ke Zhang, Liu, Zhaojun, Liu, Yibo   +11 more
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Tetramethylammonium hydroxide thermochemolysis for the analysis of cellulose and free carbohydrates in a peat bog [PDF]

Journal of Analytical and Applied Pyrolysis, 2011
We have compared TMAH thermochemolysis with the classical method using acid hydrolysis for carbohydrates analysis in a peat core. Even if TMAH thermochemolysis does not analyse hemicellulosic carbohydrates and discriminate each individual carbohydrate sensu stricto, it allows the analysis of a cellulose pool hidden to acid hydrolysis and the specific ...
Estournel-Pelardy, Céline, Delarue, Frédéric, Grasset, Laurent, Laggoun-Défarge, Fatima, Amblès, André   +4 more
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Infra red spectroscopy, flash pyrolysis, thermally assisted hydrolysis and methylation (THM) in the presence of tetramethylammonium hydroxide (TMAH) of cultured and sediment-derived Lingulodinium polyedrum (Dinoflagellata) cyst walls

, 2012
The macromolecular composition of dinoflagellate cyst walls is poorly understood and is usually referred to as ‘sporopollenin-like’. We have carried out micro-Fourier transform infra red (micro-FTIR) analysis of chemically untreated sediment-derived and ...
Oltmanns, S., Lewis, J., Harding, I.C., Versteegh, Gerard J.M., Blokker, Peter, Oltmanns, Sven, Kara A. Bogus, Peter Blokker, André Rochon, Bogus, Kara A., Zonneveld, K.A.F., Versteegh, G.J.M., Blokker, P., Sven Oltmanns, Karin A.F. Zonneveld, Jane Lewis, Rochon, André, Gerard J.M. Versteegh, Harding, Ian C., Rochon, A., Ian C. Harding, Lewis, Jane, Zonneveld, Karin A.F., Bogus, K.A.   +23 more
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Single Isomer Heterometallic {CrIII6MII2} Rings Templated by Tetramethylammonium

, 2021
A family of heterometallic rings [Me4N]2[CrIII6MII2F8(O2CtBu)16] is reported using tetramethylammonium hydroxide pentahydrate as the source of a template, where M = Zn, Mn, Ni, and Co.
Edmund Little, Grigore A. Timco (1262340), Rajeh Alotaibi (3928613), Rajeh Alotaibi, Rahul R. Nair (1731709), Amritroop Achari, Adam Brookfield (9336607), Richard E. P. Winpenny, Adam Brookfield, David Collison, Edmund Little (11529442), Grigore A. Timco, Nicholas F. Chilton, George F. S. Whitehead (7310771), David Collison (1455709), Ralph W. Adams, Amritroop Achari (11529445), Jonathan M. Fowler (3752590), Ralph W. Adams (1277208), George F. S. Whitehead, Jonathan M. Fowler, Rahul R. Nair, Nicholas F. Chilton (1497670), Richard E. P. Winpenny (7358462)   +23 more
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Spin‐On SiOx‐Assisted Inkjet Printing for Interdigitated n+ and p+ Poly‐Si/SiOx Contacts in Silicon Solar Cells With Suppressed Unintended Doping

Advanced Materials Technologies, EarlyView.
This work presents an innovative spin‐on SiOx‐assisted inkjet‐printed approach to form localized n+ and p+ poly‐Si/SiOx passivating contacts for high‐efficiency silicon solar cells within a single‐annealing step. The developed process results in a well‐defined interdigitated doping pattern, with unintended doping and cross‐doping concentrations ...
Jiali Wang, Jinlei Ren, Laura Creon, Paula Peres, Rene Chemnitzer, Pierre‐Yves Corre, Sieu Pheng Phang, Daniel Macdonald, AnYao Liu   +8 more
wiley   +1 more source

Analysis Of Powdered Coffee And Milk By Icp Oes After Sample Treatment With Tetramethylammonium Hydroxide

, 2015
A simple method for the solubilization of powdered milk and soluble coffee using tetramethylammonium hydroxide (TMAH) is proposed. While 500 μL of the reagent was used for the solubilization of 350 mg of coffee samples, milk samples required 1000 μL of ...
Ribeiro A.S., Cadore S., Moretto A.L., Arruda M.A.Z.   +3 more
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Synthesis of Highly Purified Tetramethylammonium Hydroxide Solution

Denki Kagaku oyobi Kogyo Butsuri Kagaku, 1996
Tetramethylammonium hydroxide (TMAH) solution free from Cl ion was synthesized by electrolysis of the corresponding formate and hydrogencarbonate salts in an electrolytic cell with a cation exchange membrane. As formate salt was used as intermediate of TMAH synthesis, the TMAH solution was contaminated by a small amount of formic acid, while the high ...
YAGI, Osamu, SHIMIZU, Shunpei
openaire   +2 more sources