Results 11 to 20 of about 1,040,831 (304)

Composite catalysts for the catalytic processing of fuel oil [PDF]

MATEC Web of Conferences, 2021
The paper describes the catalytic cracking of heavy petroleum feedstock on catalysts based natural Taizhuzgen zeolite and Narynkol clay (Kazakhstan). Catalytic cracking was studied on fuel oil of the M-100 brand taken from the LLP Pavlodar Oil Chemistry ...
Shakiyeva Tatyana, Sassykova Larissa, Khamlenko Anastassiya, Dossumova Binara, Sassykova Albina, Muratova Albina, Zhumagali Madina, Zhakirova Nurbubi, Abildin Tleutai   +8 more
doaj   +1 more source

Ionization fraction and the enhanced sulfur chemistry in Barnard 1 [PDF]

, 2016
Barnard B1b has revealed as one of the most interesting globules from the chemical and dynamical point of view. It presents a rich molecular chemistry characterized by large abundances of deuterated and complex molecules.
Aguado, A., Bachiller, R., Cernicharo, J., Fuente, A., Gerin, M., Lefloch, B., Marcelino, N., Pety, J., Roncero, O., Roueff, E.   +9 more
core   +4 more sources

Isolation, characterization, and surface chemistry of a surface-active fraction from dog lung

Journal of Lipid Research, 1970
A procedure is described for the isolation of a surface-active fraction from dog lung. This material meets the established criteria for pulmonary surfactant. The fraction was shown to contain lipid, protein, and carbohydrate.
M.F. FROSOLONO, B.L. CHARMS, R. PAWLOWSKI, S. SLIVKA   +3 more
doaj   +1 more source

Air–snowpack exchange of bromine, ozone and mercury in the springtime Arctic simulated by the 1-D model PHANTAS – Part 1: In-snow bromine activation and its impact on ozone [PDF]

Atmospheric Chemistry and Physics, 2014
To provide a theoretical framework towards a better understanding of ozone depletion events (ODEs) and atmospheric mercury depletion events (AMDEs) in the polar boundary layer, we have developed a one-dimensional model that simulates multiphase chemistry
K. Toyota, J. C. McConnell, R. M. Staebler, A. P. Dastoor   +3 more
doaj   +1 more source

Turbulence–chemistry interaction models with finite-rate chemistry and compressibility correction for simulation of supersonic turbulent combustion

Engineering Applications of Computational Fluid Mechanics, 2020
The turbulence–chemistry interaction model with finite-rate chemistry is a common model for solving supersonic turbulent combustion and takes into consideration the interaction between turbulent mixing and chemical reactions as well as finite chemistry ...
Zhouzheng Xiang, Shunhua Yang, Songbai Xie, Ji Li, Hongyu Ren   +4 more
doaj   +1 more source

Motion Characteristics of Vibrated Droplets on Micropillared Surface with Gradient Energy

Shanghai Jiaotong Daxue xuebao, 2021
A gradient energy surface with micropillared structures is prepared by photolithography using polydimethylsiloxane (PDMS) as the substrate. The dynamic characteristics of vibrated droplets on the gradient energy surface with micropillared structures are ...
XIONG Xuejiao, JIA Zhihai, DENG Yong, FEI Yuanyuan
doaj   +1 more source

Large Eddy Simulation of Autoignition in a Turbulent Hydrogen Jet Flame Using a Progress Variable Approach

Journal of Combustion, 2012
The potential of a progress variable formulation for predicting autoignition and subsequent kernel development in a nonpremixed jet flame is explored in the LES (Large Eddy Simulation) context. The chemistry is tabulated as a function of mixture fraction
Rohit Kulkarni, Wolfgang Polifke
doaj   +1 more source

Predicting Radiative Heat Transfer in Oxy-Methane Flame Simulations: An Examination of Its Sensitivities to Chemistry and Radiative Property Models

Journal of Combustion, 2015
Measurements from confined, laminar oxy-methane flames at different O2/CO2 dilution ratios in the oxidizer are first reported with measurements from methane-air flames included for comparison.
Hassan Abdul-Sater, Gautham Krishnamoorthy, Mario Ditaranto   +2 more
doaj   +1 more source

Characterization of commercial ceramic adsorbents and its application on naphthenic acids removal of petroleum distillates

Materials Research, 2007
The mixture of carboxylic acids present in petroleum oil and directly responsible for its acidity and corrosiveness in liquid phase during the refine process is denominated "naphthenic acids".
Juliana Pereira Silva, Lilian Ferreira de Senna, Dalva Cristina Baptista do Lago, Paulo Ferreira da Silva Jr., Elton Gonçalves Dias, Marco Antônio Gaya de Figueiredo, Sandra Shirley Ximenes Chiaro   +6 more
doaj   +1 more source

Water formation on bare grains: When the chemistry on dust impacts interstellar gas [PDF]

, 2010
Context. Water together with O2 are important gas phase ingredients to cool dense gas in order to form stars. On dust grains, H2 O is an important constituent of the icy mantle in which a complex chemistry is taking place, as revealed by hot core ...
Akai, Andersson, Andersson, Bachellerie, Bergeron, Bergin, Bolina, Brown, Caselli, Cazaux, Cazaux, Cazaux, Chang, Cuppen, Cuppen, D’Hendecourt, Fromherz, Garrod, Ghio, Gibb, Goldsmith, González, Hasegawa, Heine, Hollenbach, Hollenbach, Ioppolo, Jelea, Jeloaica, Jones, Jones, Katz, Lee, Lee, Lin, M. Marseille, M. Spaans, Meijerink, Miyauchi, Mokrane, Neufeld, Oberg, P. Caselli, Papoular, Pirronello, Rougeau, S. Cazaux, Sha, Snow, Tielens, V. Cobut, Walch, Whittet, Williams   +53 more
core   +4 more sources