Results 21 to 30 of about 4,153 (244)
Journal of Geophysical Research: Planets, 2023 The Sample Analysis at Mars (SAM) instrument aboard the Curiosity Rover at Gale crater can characterize organic molecules from scooped and drilled samples via pyrolysis of solid materials.
A. Mojarro +9 more
semanticscholar +1 more source
Journal of Food and Drug Analysis, 2023 A simple and dependable technique, known as THAM method, has been developed to detect and measure ethyl eicosapentaenoate (EE-EPA) and ethyl docosahexaenoate (EE-DHA) in encapsulated fish oils. This technique involves using tetramethylammonium hydroxide (
Pai-Wen Wu +6 more
semanticscholar +1 more source
BMC Pharmacology and Toxicology, 2020 Background Tetramethylammonium hydroxide (TMAH) is a quaternary ammonium compound that is both a base corrosive and a cholinergic agonist, and it is widely used in the photoelectric and semiconductor industries.
Chih-Kang Huang +6 more
doaj +1 more source
Fabrication of Sio2-based microcantilevers by anisotropic chemical etching of (100) single crystal Si [PDF]
Journal of the Serbian Chemical Society, 2007 The undercutting process of thermal SiO2 microcantilevers with different orientations on (100) Si wafer was studied. The silicon substrate was removed by anisotropic chemical etching with a 25 wt. % aqueous solution of TMAH or a 30 wt.
Jović Vesna +3 more
doaj +1 more source
Mapping gaseous dimethylamine, trimethylamine, ammonia, and their particulate counterparts in marine atmospheres of China’s marginal seas – Part 2: Spatiotemporal heterogeneity, causes, and hypothesis [PDF]
Atmospheric Chemistry and Physics, 2022 Spatiotemporal heterogeneities in the concentrations of alkaline gases and their particulate counterparts in the marine atmosphere over China's marginal seas were investigated in terms of causes and chemical conversion during two winter cruise campaigns,
Y. Gao +8 more
doaj +2 more sources
Effects of curing condition and particle size of aggregate on the expansion and microstructure of dolomitic aggregates cured in TMAH solution [PDF]
Royal Society Open Science, 2019 In this paper, the modified microbars prepared by dolomitic aggregates with three kinds of particle size and self-made cement without K+ and Na+ were cured in 1 and 2 N tetramethyl ammonium hydroxide (TMAH) solution at 20°C, 60°C and 80°C, respectively ...
Bin Yang, Xiaoxiao Chen, Min Deng
doaj +1 more source
Insights Into the Influence of Sidewall Morphology on the Light Extraction Efficiency of Mini-LEDs
IEEE Photonics Journal, 2019 We systemically investigated the influence of sidewall morphology change based on TMAH etching on the optical performance of mini-LEDs. The dominant feature of prism structures on the sidewall of mini-LEDs with TMAH etching treatment varied from ...
Bin Tang +5 more
doaj +1 more source
Petroleum Research, 2022 This study investigated efficiency of tetramethyl ammonium hydroxide pentahydrate (TMAH) in removal of heavy metal ions from heavy oils obtained from Nigerian oil sands by Soxhlet-extraction technique.
Festus M. Adebiyi, PhD, Reuben O. Yoade
doaj +1 more source
Applied Sciences, 2019 Nitrogen-containing wastewater is an important issue in optoelectronic and semiconductor industries. Wastewater containing nitrogen compounds such as ammonium, monoethanolamine (MEA), and tetramethylammonium hydroxide (TMAH) must be properly treated due ...
Da Tian Chang +3 more
doaj +1 more source
Nanomaterials, 2019 We demonstrated that the tetramethylammonium hydroxide (TMAH) solution possesses different etching abilities to the chip sidewalls with different orientations because the orientation of chip sidewall determines the exposed crystallographic plane of ...
Hui Wan +5 more
doaj +1 more source