Results 21 to 30 of about 55,018 (263)
Polydimethylsiloxane-coated macroporous silica adsorbent in thermal desorption gas chromatography
Journal of Chromatography Open, 2023 Polydimethylsiloxane (PDMS)-coated macroporous silica (MPSi) particles were developed for the extraction of volatile organic compounds (VOCs) from air samples in thermal desorption-gas chromatographic analysis.
Ikuo Ueta +5 more
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Resolving desorption of complex organic molecules in a hot core
Astronomy & Astrophysics, 2022 Context. The presence of many interstellar complex organic molecules (COMs) in the gas phase in the vicinity of protostars has long been associated with their formation on icy dust grain surfaces before the onset of protostellar activity, and their subsequent thermal co-desorption with water, the main constituent of the grains’ ice mantles, as the ...
Busch, L. +4 more
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Adsorption and Thermal Desorption Behaviour of Asphalt-like Functionalities on Silica
Adsorption Science & Technology, 2000 The adsorption and thermal desorption behaviours of seven model compounds containing asphalt-like functionalities were studied on silica. Adsorption isotherms of the model compounds were examined at 25°C and analyzed via the Langmuir isotherm.
Sangkwon Park +2 more
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Micro and Nano Engineering, 2023 Au-based micro-electro-mechanical-system (Au-MEMS) capacitance accelerometers show high sensitivity by suppressing the mechanical noise because of the high mass density of gold (ρ = 19.3 g/cm3). On the other hand, their long-term reliability suffers from
Takumi Akiyama +8 more
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Thermal desorption of hydrogen from graphane [PDF]
Technical Physics Letters, 2010 The process of hydrogen desorption from graphane (graphene sheet saturated by hydrogen adsorbed from both sides) has been studied using the method of molecular dynamics. The temperature dependences of the time of desorption onset for various hydrogen coverages on graphene are calculated and the corresponding activation energies in the Arrhenius ...
Openov, L. A., Podlivaev, A. I.
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Approximation of the boundary-value problem of hydrogen thermal desorption by ODE system
Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015 Hydrogen material science and engineering (including the ITER project) and connected technological problems need various construction materials with desired hydrogen permeability.
Yury Zaika, Ekaterina Kostikova
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Le Journal de Physique Colloques, 1989 Adiabatic potential energy curves have been calculated as a function of electric field strength for the ground state and an excited state of helium adsorbed on tungsten. Using a unitary transformation we construct the diabatic energy curves for neutral helium and its singly charged ion. We also obtained the coupling term between these states from which
Kreuser, H., Wang, L.
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Thermal injection stimulation to enhance coalbed methane recovery
Youqicang pingjia yu kaifa, 2022 Thermal injection stimulation technology, which is suitable for coal seams with low water content and difficult pressure reduction and desorption, is an effective method to increase coalbed methane production besides hydraulic fracturing.
YANG Zhaozhong +5 more
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Monoterpenes Released from Fruit, Plant, and Vegetable Systems
Sensors, 2014 To quantify the emission rate of monoterpenes (MTs) from diverse natural sources, the sorbent tube (ST)-thermal desorption (TD) method was employed to conduct the collection and subsequent detection of MTs by gas chromatography.
Mohammad Asif Iqbal +2 more
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Sensors, 2019 A conventional approach to making miniature or microscale gas chromatography (GC) components relies on silicon as a base material and MEMS fabrication as manufacturing processes.
Xiaolu Huang +6 more
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