Recent developments in the determination of residual solvents in pharmaceutical products by microextraction methods

2015 ◽  
Vol 7 (20) ◽  
pp. 8511-8523 ◽  
Author(s):  
Majid Mirmoghaddam ◽  
Massoud Kaykhaii ◽  
Hossein Yahyavi
Keyword(s):  
Pharmaceutical Products ◽  
Residual Solvents ◽  
Recent Developments

Recent developments in the determination of residual solvents in pharmaceutical products by microextraction methods.

Use of Mass Spectrometry Methods as a Strategy for Detection and Determination of Residual Solvents in Pharmaceutical Products

2006 ◽  
Vol 78 (14) ◽  
pp. 4901-4908 ◽  
Author(s):  
José Luis Pérez Pavón ◽  
Miguel del Nogal Sánchez ◽  
Carmelo García Pinto ◽  
M. Esther Fernández Laespada ◽  
Bernardo Moreno Cordero
Keyword(s):  
Mass Spectrometry ◽  
Pharmaceutical Products ◽  
Residual Solvents

High-resolution microscopy of twin boundaries in gold

1987 ◽  
Vol 45 ◽  
pp. 260-261
Author(s):  
William Krakow ◽  
David A. Smith
Keyword(s):  
High Resolution ◽  
Specimen Preparation ◽  
Gold Films ◽  
Boundary Area ◽  
Transmission Electron ◽  
Recent Developments ◽  
Tilt Boundaries ◽  
High Resolution Microscopy ◽  
Twist Boundaries

Recent developments in specimen preparation, imaging and image analysis together permit the experimental determination of the atomic structure of certain, simple grain boundaries in metals such as gold. Single crystal, ∼125Å thick, (110) oriented gold films are vapor deposited onto ∼3000Å of epitaxial silver on (110) oriented cut and polished rock salt substrates. Bicrystal gold films are then made by first removing the silver coated substrate and placing in contact two suitably misoriented pieces of the gold film on a gold grid. Controlled heating in a hot stage first produces twist boundaries which then migrate, so reducing the grain boundary area, to give mixed boundaries and finally tilt boundaries perpendicular to the foil. These specimens are well suited to investigation by high resolution transmission electron microscopy.

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