Medium effects of urea and guanidine hydrochloride on the volume changes produced by protonation of carboxylate groups

1972 ◽  
Vol 76 (19) ◽  
pp. 2778-2780 ◽  
Author(s):  
Sam Katz ◽  
Jane E. Miller
Keyword(s):  
Guanidine Hydrochloride ◽  
Volume Changes ◽  
Medium Effects ◽  
Carboxylate Groups

Compressibility and Volume Changes of Lysozyme Due to Guanidine Hydrochloride Denaturation

1997 ◽  
Vol 26 (10) ◽  
pp. 1063-1064 ◽  
Author(s):  
Tadashi Kamiyama ◽  
Kunihiko Gekko
Keyword(s):  
Guanidine Hydrochloride ◽  
Volume Changes

Gender Differences in the Mental Rotations Test (MRT) Are Not Due to Task Complexity

2008 ◽  
Vol 29 (3) ◽  
pp. 130-133 ◽  
Author(s):  
Corinna Titze ◽  
Martin Heil ◽  
Petra Jansen
Keyword(s):  
Gender Differences ◽  
Mental Rotation ◽  
Task Complexity ◽  
Time Constraints ◽  
Medium Effects ◽  
Performance Factors ◽  
Mental Rotations ◽  
Sufficient Power ◽  
Forced Choice Tasks ◽  
Choice Tasks

Gender differences are one of the main topics in mental rotation research. This paper focuses on the influence of the performance factor task complexity by using two versions of the Mental Rotations Test (MRT). Some 300 participants completed the test without time constraints, either in the regular version or with a complexity reducing template creating successive two-alternative forced-choice tasks. Results showed that the complexity manipulation did not affect the gender differences at all. These results were supported by a sufficient power to detect medium effects. Although performance factors seem to play a role in solving mental rotation problems, we conclude that the variation of task complexity as realized in the present study did not.

Volume changes in HgTe upon melting and heating

1997 ◽  
Vol 94 ◽  
pp. 1816-1826 ◽  
Author(s):  
M Glazov ◽  
LM Pavlova ◽  
SV Stankus
Keyword(s):  
Volume Changes

On the Preparation of Bovine α-Thrombin

1978 ◽  
Vol 39 (01) ◽  
pp. 193-200 ◽  
Author(s):  
Erwin F Workman ◽  
Roger L Lundblad
Keyword(s):  
Immobilized Enzyme ◽  
Catalytic Properties ◽  
Specific Activity ◽  
Guanidine Hydrochloride ◽  
Low Molecular Weight ◽  
Reversible Process ◽  
Gel Beads ◽  
Tissue Thromboplastin ◽  
C 50 ◽  
Hydrolysis Of

SummaryAn improved method for the preparation of bovine α-thrombin is described. The procedure involves the activation of partially purified prothrombin with tissue thromboplastin followed by chromatography on Sulfopropyl-Sephadex C-50. The purified enzyme is homogeneous on polyacrylamide discontinuous gel electrophoresis and has a specific activity toward fibrinogen of 2,200–2,700 N.I.H. U/mg. Its stability on storage in liquid media is dependent on both ionic strenght and temperature. Increasing ionic strength and decreasing temperature result in optimal stability. The denaturation of α-thrombin by guanidine hydrochloride was found to be a partially reversible process with the renatured species possessing properties similar to “aged” thrombin. In addition, the catalytic properties of a-thrombin covalently attached to agarose gel beads were also examined. The activity of the immobilized enzyme toward fibrinogen was affected to a much greater extent than was the hydrolysis of low molecular weight, synthetic substrates.

Hippocampal and amygdala volume changes in patients with major depression and healthy controls during a three year follow-up

2005 ◽  
Vol 38 (05) ◽  
Author(s):  
TS Frodl ◽  
T Zetzsche ◽  
G Schmitt ◽  
T Schlossbauer ◽  
MW Jäger ◽  
...  
Keyword(s):  
Major Depression ◽  
Healthy Controls ◽  
Volume Changes ◽  
Amygdala Volume
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