Wax precipitation from North Sea crude oils: 1. Crystallization and dissolution temperatures, and Newtonian and non-Newtonian flow properties

1991 ◽  
Vol 5 (6) ◽  
pp. 895-908 ◽  
Author(s):  
Hans Petter Roenningsen ◽  
Brit Bjoerndal ◽  
Asger Baltzer Hansen ◽  
Walther Batsberg Pedersen
Keyword(s):  
North Sea ◽  
Crude Oils ◽  
Flow Properties ◽  
Newtonian Flow ◽  
Wax Precipitation

Wax precipitation from North Sea crude oils. 3. Precipitation and dissolution of wax studied by differential scanning calorimetry

1991 ◽  
Vol 5 (6) ◽  
pp. 914-923 ◽  
Author(s):  
Asger Baltzer Hansen ◽  
Elfinn Larsen ◽  
Walther Batsberg Pedersen ◽  
Anne B. Nielsen ◽  
Hans Petter Roenningsen
Keyword(s):  
Differential Scanning Calorimetry ◽  
North Sea ◽  
Crude Oils ◽  
Scanning Calorimetry ◽  
Wax Precipitation

Wax precipitation from North Sea crude oils. 4. Thermodynamic modeling

1991 ◽  
Vol 5 (6) ◽  
pp. 924-932 ◽  
Author(s):  
Karen Schou Pedersen ◽  
Per Skovborg ◽  
Hans Petter Roenningsen
Keyword(s):  
North Sea ◽  
Thermodynamic Modeling ◽  
Crude Oils ◽  
Wax Precipitation

Wax precipitation from North Sea crude oils. 2. Solid-phase content as function of temperature determined by pulsed NMR

1991 ◽  
Vol 5 (6) ◽  
pp. 908-913 ◽  
Author(s):  
Walther Batsberg Pedersen ◽  
Asger Baltzer Hansen ◽  
Elfinn Larsen ◽  
Anne B. Nielsen ◽  
Hans Petter Roenningsen
Keyword(s):  
North Sea ◽  
Solid Phase ◽  
Crude Oils ◽  
Phase Content ◽  
Wax Precipitation ◽  
Solid Phase Content ◽  
Pulsed Nmr

scholarly journals The study of structural mechanical properties of «Kartalin» ointment

2009 ◽  
Vol 8 (3) ◽  
pp. 48-52
Author(s):  
M. G. Kartalov ◽  
S. Ye. Dmitruk ◽  
V. S. Dmitruk ◽  
T. V. Romanenko
Keyword(s):  
Mechanical Properties ◽  
High Viscosity ◽  
High Yield ◽  
Skin Protection ◽  
Flow Properties ◽  
Newtonian Flow ◽  
Quality Maintenance ◽  
Preventive Activity ◽  
Good Preparation

In this article the structure-mechanical properties research results of «Kartalin» ointment are being cited. This ointment shows the evident treatment-preventive activity with occupational and combinational dermatosis. It has been ascertained that the «Kartalin» ointment, being under consideration, appears to be structural liquid with expressive non-Newtonian flow character that is having high viscosity (100—200 Pa/s) and high yield point (20—40 Pa) with the temperature of usage 30—40 °C, which provides long skin protection. The flow properties of the composition are sufficiently time stable, which enables good preparation quality maintenance during long-term storing.

Nematic-Smectic a Phase-Transition Under Shear Flow

1989 ◽  
Vol 177 ◽  
Author(s):  
R. F. Bruinsma ◽  
C. R. Safinya
Keyword(s):  
Phase Transition ◽  
Critical Temperature ◽  
Shear Flow ◽  
Structure Factor ◽  
Deborah Number ◽  
Flow Properties ◽  
Newtonian Flow ◽  
One Dimensional ◽  
Smectic A ◽  
Smectic A Phase

ABSTRACTWe discuss the effect of shear flow on the nematic to smectic A phase transition. The non-Newtonian flow properties (shear thinning and normal stress) ire correlated with the distortions of the structure-factor S(q). As a function of the Deborah number, we find first a deformation of S(q) and, beyond a critical Deborah number, highly distorted, one-dimensional fluctuations. The suppression of fluctuations by shear flow raises the critical temperature.

The reduction of wax precipitation in waxy crude oils by Pseudomonas species

2008 ◽  
Vol 35 (11) ◽  
pp. 1241-1245 ◽  
Author(s):  
A. Etoumi ◽  
I. El Musrati ◽  
B. El Gammoudi ◽  
M. El Behlil
Keyword(s):  
Crude Oils ◽  
Wax Precipitation ◽  
Waxy Crude ◽  
Pseudomonas Species ◽  
Waxy Crude Oils

Thermodynamic phase equilibria of wax precipitation in crude oils

2007 ◽  
Vol 255 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Wuhua Chen ◽  
Zongchang Zhao ◽  
Xiaodong Zhang ◽  
Lijuan Wang
Keyword(s):  
Phase Equilibria ◽  
Crude Oils ◽  
Wax Precipitation ◽  
Thermodynamic Phase
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