Results 21 to 30 of about 5,235 (192)

Influence of Calcium Perchlorate on the Search for Organics on Mars with Tetramethylammonium Hydroxide Thermochemolysis [PDF]

Astrobiology, 2021
The Mars Organic Molecule Analyzer (MOMA) and Sample Analysis at Mars (SAM) instruments onboard the Exomars 2022 and Mars Science Laboratory rovers, respectively, are capable of organic matter detection and differentiating potentially biogenic from abiotic organics in martian samples.
He, Yuanyuan, Buch, Arnaud, Szopa, Cyril, Williams, Amy J., Millan, Maeva, Malespin, Charles A., Glavin, Daniel P., Freissinet, Caroline, Eigenbrode, Jennifer L., Teinturier, Samuel, Coscia, David, Bonnet, Jean-Yves, Stern, Jennifer C., Stalport, Fabien, Guzman, Melissa, Chaouche-Mechidal, Naïla, Lu, Pin, Navarro-González, Rafael, Butin, Vincent, El Bekri, Jamila, Cottin, Hervé, Johnson, Sarah, Cabane, Michel, Mahaffy, Paul R.   +23 more
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Electrochemical exfoliation of porous antimonene as anode materials for sodium-ion batteries

Electrochemistry Communications, 2021
Porous antimony has attracted wide attention in the area of energy storage as it can accommodate large volume change and facilitate Na+ ions diffusion.
Yingchang Yang, Senling Leng, Wei Shi
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Functionalization of zinc ferrite nanoparticles: influence of modification procedure on colloidal stability [PDF]

Processing and Application of Ceramics, 2016
The present work describes the synthesis of zinc ferrite nanoparticles by a chemical coprecipitation method and its surface modification with poly(diallyldimethylammonium chloride) (PDDA), tetramethylammonium hydroxide (TMAOH) and poly(ethylene glycol ...
Marija Milanović, Ivan Stijepović, Vladimir Pavlović, Vladimir V. Srdić   +3 more
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New MgFeAl-LDH Catalysts for Claisen–Schmidt Condensation

Molecules, 2022
A rapid, cheap and feasible new approach was used to synthesize the Mg0.375Fe0.375Al0.25-LDH in the presence of tetramethylammonium hydroxide (TMAH), as a nontraditional hydrolysis agent, applying both mechano-chemical (MC) and co-precipitation methods ...
Rodica Zăvoianu, Mădălina Tudorache, Vasile I. Parvulescu, Bogdan Cojocaru, Octavian D. Pavel   +4 more
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Effective suppression of interface states in recessed-gate MIS-HEMTs by TMAH wet etching

Applied Physics Express, 2023
The effect of tetramethylammonium hydroxide (TMAH) treatment prior to gate dielectric deposition on the performance of recessed-gate AlGaN/GaN metal-insulator-semiconductor high electron mobility transistors (MIS-HEMTs) was investigated.
Yu Li, Guohao Yu, Heng Wang, Jiaan Zhou, Zheming Wang, Runxian Xing, Shaoqian Lu, An Yang, Bingliang Zhang, Yong Cai, Zhongming Zeng, Baoshun Zhang   +11 more
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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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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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Quantitative analysis of cholesterol in 5 to 20 μl of plasma

Journal of Lipid Research, 1974
A gas–liquid chromatographic micromethod for quantitation of cholesterol in 20 μl of plasma was developed using 5α-cholestane as an internal standard, saponification with tetramethylammonium hydroxide–isopropanol, and extraction with tetrachloroethylene ...
T.T. Ishikawa, J. MacGee, J.A. Morrison, C.J. Glueck   +3 more
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Synthesis of ω-Chloroalkyl Aryl Ketones via C–C Bond Cleavage of tert-Cycloalkanols with Tetramethylammonium Hypochlorite

Molecules
An oxidative C–C bond cleavage of tert-cycloalkanols with tetramethylammonium hypochlorite (TMAOCl) has been developed. TMAOCl is easy to prepare from tetramethylammonium hydroxide, and the combination of TMAOCl and AcOH effectively promoted the C–C bond
Natsumi Hanazawa, Masami Kuriyama, Kosuke Yamamoto, Osamu Onomura   +3 more
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Recent applications of tetramethylammonium hydroxide (TMAH) in the sample preparation for elemental analysis by spectroanalytical techniques

Advances in Sample Preparation
Application of tetramethylammonium hydroxide for the treatment of samples prior to elemental analysis over the last five years is approached in this review article.
Uillian Mozart Ferreira Mata Cerqueira, Juscelia Pereira Santos Alves, Walter Nei Lopes Santos, Bernardo da Silva Pita, Cleber Galvão Novaes, Sulene Alves Araújo, Marcos Almeida Bezerra   +6 more
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