Theoretical prediction of phase behaviour at high temperatures and pressures for non-polar mixtures. Part 1.—Computer solution techniques and stability tests

1977 ◽  
Vol 73 (5) ◽  
pp. 597-612 ◽  
Author(s):  
Colin P. Hicks ◽  
Colin L. Young
Keyword(s):  
Theoretical Prediction ◽  
High Temperatures ◽  
Phase Behaviour ◽  
Computer Solution ◽  
Stability Tests ◽  
Polar Mixtures ◽  
Solution Techniques

HAIR TONIC FORMULATION OF CLOVE LEAVES (SYZYGIUM AROMATICUM) ETHANOL EXTRACT AND THE EFFECTIVENESS ON RABBIT HAIR GROWTH

2020 ◽  
pp. 245-248
Author(s):  
HAFIZHATUL ABADI ◽  
HANAFIS SASTRA WINATA ◽  
PARHAN ◽  
VIVI EULIS DIANA ◽  
ADEK CHAN ◽  
...  
Keyword(s):  
High Temperatures ◽  
Hair Growth ◽  
Leaf Extract ◽  
Physical Stability ◽  
Ethanol Extract ◽  
Positive Control ◽  
Syzygium Aromaticum ◽  
Climatic Chamber ◽  
Stability Tests ◽  
Concentration Variation

Objective: The purpose of this study was to determine the physical stability and effectiveness of hair growth in hair tonic preparations containing ethanol extract of clove leaves (Syzygium aromaticum) with a concentration variation of 5, 10, and 15%. Methods: Formulations were evaluated, including organoleptic observation, pH checking, and preparation stability tests using the Climatic Chamber. The effectiveness of clove leaf extract as a hair tonic was tested by looking at hair growth in test animals. Results: The results showed that the preparation was stable at high temperatures (40±2 °C) where the odor, color, clarity, and pH remained constant. Effectiveness test on rabbit hair growth showed significantly different results after measuring hair growth on the 21st day, where the results were 11.83+0.06 mm for positive control, 1.71+0.06 mm as blank, 1.69+0.06 mm for the group without treatment, and successively the results of the group given clove leaf extract 5, 10, and 15% were 4.00+0.06; 4.80+0.06; and 5.46+0.08 mm. Conclusion: Hair tonics containing clove ethanol extract can increase rabbit hair growth.

Electric and phase behaviour of the solid system silver chloride - cadmium dichloride at high temperatures

1998 ◽  
Vol 30 (1) ◽  
pp. 113-118 ◽  
Author(s):  
Alina Wojakowska ◽  
Stanisława Plińska ◽  
Jerzy Josiak ◽  
Emil Kundys
Keyword(s):  
High Temperatures ◽  
Silver Chloride ◽  
Phase Behaviour ◽  
Solid System

In situ REM imaging of surface processes on ceramic bulk crystals from 300 to 1670 K in a conventional TEM

1991 ◽  
Vol 49 ◽  
pp. 660-661
Author(s):  
Z. L. Wang ◽  
J. Bentley
Keyword(s):  
High Temperatures ◽  
Image Resolution ◽  
Atomic Processes ◽  
Crystal Surfaces ◽  
Beam Radiation ◽  
Surface Areas ◽  
Transmission Electron ◽  
Reflection Electron Microscopy ◽  
Gas Reactions

Studying the behavior of surfaces at high temperatures is of great importance for understanding the properties of ceramics and associated surface-gas reactions. Atomic processes occurring on bulk crystal surfaces at high temperatures can be recorded by reflection electron microscopy (REM) in a conventional transmission electron microscope (TEM) with relatively high resolution, because REM is especially sensitive to atomic-height steps.Improved REM image resolution with a FEG: Cleaved surfaces of a-alumina (012) exhibit atomic flatness with steps of height about 5 Å, determined by reference to a screw (or near screw) dislocation with a presumed Burgers vector of b = (1/3)<012> (see Fig. 1). Steps of heights less than about 0.8 Å can be clearly resolved only with a field emission gun (FEG) (Fig. 2). The small steps are formed by the surface oscillating between the closely packed O and Al stacking layers. The bands of dark contrast (Fig. 2b) are the result of beam radiation damage to surface areas initially terminated with O ions.

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