Results 31 to 40 of about 5,522,348 (307)

Effects of solubilization on drug diffusion

Journal of Pharmacy and Pharmacology, 1972
AbstractThe diffusion of ephedrine, sulphathiazole, chloramphenicol, paracetamol, isoniazid and amphetamine in solutions of Tween 40, Tween 80 and cetomacrogol 1000 have been studied. With the exception of isoniazid, the observed diffusion coefficients, corrected for resistance to flow, depend upon the surfactant used and both the drug and surfactant ...
J R, Bloor, J C, Morrison
openaire   +2 more sources

The effective thermal conductivity and thermal diffusivity of glass bubble assemblies in vacuum under cryogenic conditions

Results in Engineering
In this work, a methodology is proposed to estimate the effective thermal conductivity and thermal diffusivity of an assembly of randomly packed glass microbubbles, in the absence of surrounding gas (vacuum).
Antonios E. Giannakopoulos, Efstathios Platypodis, Athanasios Zisis, Anna D. Zervaki, Christos D. Dimopoulos, Robert Eberwein   +5 more
doaj   +1 more source

Effects of diffusive property heterogeneity on effective matrix diffusion coefficient for fractured rock [PDF]

Water Resources Research, 2006
Heterogeneities of diffusion properties are likely to influence the effective matrix diffusion coefficient determined from tracer breakthrough curves. The objectives of this study are (1) to examine if it is appropriate to use a single, effective matrix diffusion coefficient to predict breakthrough curves in a fractured formation, (2) to examine if a ...
Zhang, Yingqi, Liu, Hui-hai, Zhou, Quanlin, Finsterle, Stefan   +3 more
openaire   +2 more sources

Estimation of Thermal Diffusivity in the Inverse Heat Transfer Problem for a Polymer Plate

Modelling
This study investigates the inverse estimation of the effective thermal diffusivity of a polytetrafluoroethylene (PTFE) plate subjected to oscillatory heating from a hot plate with on–off control.
Douglas M. Rieger, Alisson L. Daga, Ervin K. Lenzi, Marcelo K. Lenzi   +3 more
doaj   +1 more source

Impact of instant controlled pressure drop pre-treatment on solvent extraction of edible oil from rapeseed seeds

Oilseeds and fats, crops and lipids, 2014
The fundamental analysis and modeling of kinetics of solvent extraction of rapeseed oil enable the quantification of the “washing” and “diffusion” steps. Both are illustrated through “starting accessibility” and “effective diffusivity”
Allaf Tamara, Fine Frédéric, Tomao Valérie, Nguyen Cuong, Ginies Christian, Chemat Farid   +5 more
doaj   +1 more source

Effective diffusion coefficient including the Marangoni effect [PDF]

The Journal of Chemical Physics, 2018
Surface-active molecules supplied from a particle fixed at the water surface create a spatial gradient of the molecule concentration, resulting in Marangoni convection. Convective flow transports the molecules far from the particle, enhancing diffusion.
Hiroyuki Kitahata, Natsuhiko Yoshinaga
openaire   +3 more sources

Effective diffusivity in yacon potato cylinders during drying

Revista Brasileira de Engenharia Agrícola e Ambiental
The aim of this study was to obtain the effective diffusivity of yacon potato in fixed-bed dryer at different temperatures (50, 60 and 70 ºC) and drying air velocities (1.0, 1.5 and 2.0 m s-1).
Cícera G. C. de Lisboa, Josivanda P. Gomes, Rossana M. F. de Figueirêdo, Alexandre J. de M. Queiroz, Adelino de M. G. Diógenes, João C. S. de Melo   +5 more
doaj   +1 more source

Impurity ion transport by filamentary plasma structures

Nuclear Materials and Energy, 2019
We have studied the impurity ion transport by a filamentary plasma structure with the three-dimensional electrostatic particle-in-cell simulation. The effective diffusivity of the impurity ions transported by a filamentary plasma structure has been ...
Hiroki Hasegawa, Seiji Ishiguro
doaj   +1 more source

Effective diffusivity of packed bed

AIChE Journal, 1957
AbstractFrom time to time, A.I.Ch.E. Journal presents translations of certain technical articles written by our Japanese colleagues in their own language. These translations are made by Kenzi Etani, who received his B.S. in chemical engineering in 1953 at the Tokyo Institute of Technology and his M.S. in 1955 at M.I.T. He is associated with Stone &
Klmura, M., Ueda, K., Ofuka, T.
openaire   +2 more sources

Comparative Drug Response Profiling in Neuroblastoma Cell Lines and Patient‐Derived Tumor Organoids

Pediatric Blood &Cancer, EarlyView.
ABSTRACT High‐risk neuroblastoma remains a leading cause of pediatric cancer mortality, and improved preclinical models are needed to guide therapeutic developments. We screened seven high‐risk neuroblastoma cell lines and three patient‐derived tumor organoids with 528 compounds alongside bone marrow controls, and compared them with external datasets ...
Krzysztof Wierbiłowicz, Se Whee Sammy Park, Aironas Los, Ernest Liu, Nona Struyf, Tom Erkers, Sören Lehmann, Jan J. Molenaar, Jakob Stenman, Olli Kallioniemi, Päivi Östling, Brinton Seashore‐Ludlow, Kasper Karlsson   +12 more
wiley   +1 more source