scholarly journals Quantitative interpretation of isopiestic measurements on aqueous solutions: Urea revisited

2019 ◽  
Vol 251 ◽  
pp. 106175
Author(s):  
Donald J. Winzor ◽  
Peter R. Wills
2016 ◽  
Vol 144 (15) ◽  
pp. 154704 ◽  
Author(s):  
Giorgia Olivieri ◽  
Krista M. Parry ◽  
Cedric J. Powell ◽  
Douglas J. Tobias ◽  
Matthew A. Brown

2013 ◽  
Vol 59 (1) ◽  
pp. 97-102 ◽  
Author(s):  
Haitang Yang ◽  
Dewen Zeng ◽  
Wolfgang Voigt ◽  
Glenn Hefter ◽  
Shijun Liu ◽  
...  

2016 ◽  
Vol 61 (10) ◽  
pp. 3406-3412 ◽  
Author(s):  
Haitang Yang ◽  
Dewen Zeng ◽  
Wolfgang Voigt ◽  
Yifeng Chen ◽  
Quanbao Zhou

Author(s):  
K. J. Böhm ◽  
a. E. Unger

During the last years it was shown that also by means of cryo-ultra-microtomy a good preservation of substructural details of biological material was possible. However the specimen generally was prefixed in these cases with aldehydes.Preparing ultrathin frozen sections of chemically non-prefixed material commonly was linked up to considerable technical and manual expense and the results were not always satisfying. Furthermore, it seems to be impossible to carry out cytochemical investigations by means of treating sections of unfixed biological material with aqueous solutions.We therefore tried to overcome these difficulties by preparing yeast cells (S. cerevisiae) in the following manner:


Author(s):  
S.A.C. Gould ◽  
B. Drake ◽  
C.B. Prater ◽  
A.L. Weisenhorn ◽  
S.M. Lindsay ◽  
...  

The atomic force microscope (AFM) is an instrument that can be used to image many samples of interest in biology and medicine. Images of polymerized amino acids, polyalanine and polyphenylalanine demonstrate the potential of the AFM for revealing the structure of molecules. Images of the protein fibrinogen which agree with TEM images demonstrate that the AFM can provide topographical data on larger molecules. Finally, images of DNA suggest the AFM may soon provide an easier and faster technique for DNA sequencing.The AFM consists of a microfabricated SiO2 triangular shaped cantilever with a diamond tip affixed at the elbow to act as a probe. The sample is mounted on a electronically driven piezoelectric crystal. It is then placed in contact with the tip and scanned. The topography of the surface causes minute deflections in the 100 μm long cantilever which are detected using an optical lever.


Sign in / Sign up

Export Citation Format

Share Document