Comparison study of different head model structures with homogeneous/inhomogeneous conductivity

2001 ◽  
Vol 24 (1) ◽  
pp. 31-36 ◽  
Author(s):  
P. Wen ◽  
Y. Li
Keyword(s):  
Head Model ◽  
Comparison Study ◽  
Inhomogeneous Conductivity ◽  
Model Structures

Localization of DNA in chromatin using ESI and osmium ammine staining

1990 ◽  
Vol 48 (3) ◽  
pp. 116-117
Author(s):  
C.L. Woodcock ◽  
R.A. Horowitz ◽  
D. P. Bazett-Jones ◽  
A.L. Olins
Keyword(s):  
Spectroscopic Imaging ◽  
Energy Losses ◽  
Electron Spectroscopic Imaging ◽  
Feulgen Reaction ◽  
Specific Location ◽  
Eukaryotic Nucleus ◽  
Chromatin Fibers ◽  
Patiria Miniata ◽  
Model Structures

In the eukaryotic nucleus, DNA is packaged into nucleosomes, and the nucleosome chain folded into ‘30nm’ chromatin fibers. A number of different model structures, each with a specific location of nucleosomal and linker DNA have been proposed for the arrangment of nucleosomes within the fiber. We are exploring two strategies for testing the models by localizing DNA within chromatin: electron spectroscopic imaging (ESI) of phosphorus atoms, and osmium ammine (OSAM) staining, a method based on the DNA-specific Feulgen reaction.Sperm were obtained from Patiria miniata (starfish), fixed in 2% GA in 150mM NaCl, 15mM HEPES pH 8.0, and embedded In Lowiciyl K11M at -55C. For OSAM staining, sections 100nm to 150nm thick were treated as described, and stereo pairs recorded at 40,000x and 100KV using a Philips CM10 TEM. (The new osmium ammine-B stain is available from Polysciences Inc). Uranyl-lead (U-Pb) staining was as described. ESI was carried out on unstained, very thin (<30 nm) beveled sections at 80KV using a Zeiss EM902. Images were recorded at 20,000x and 30,000x with median energy losses of 110eV, 120eV and 160eV, and a window of 20eV.

Shari’ah Audit Disclosure in annual reports: A comparison study between Bahrain and Malaysian Islamic Financial Institutions

2016 ◽  
Vol 4 (2) ◽  
pp. 202-218
Author(s):  
ڕێبوار محمد احمد ◽  
◽  
هێمن محمد عزیز ◽  
بصيرة ماجيد نجم ◽  
◽  
...  
Keyword(s):  
Financial Institutions ◽  
Annual Reports ◽  
Comparison Study ◽  
Islamic Financial Institutions

414. Comparison Study Between

2000 ◽  
Author(s):  
N. Wegener ◽  
D. Lillquist ◽  
M. Taylor
Keyword(s):  
Comparison Study
Sign in / Sign up

Export Citation Format

Share Document