scholarly journals Very high-field short-pulse dipole magnet for compact proton synchrotron

Author(s):  
S. Tokura ◽  
A. Hirata ◽  
K. Shouji ◽  
S. Nakajima ◽  
Y. Miyauchi ◽  
...  
2000 ◽  
Author(s):  
Wen Li ◽  
Ronald A. Roy ◽  
Robin O. Cleveland ◽  
Lawrence J. Berg ◽  
Charles A. DiMarzio

Abstract A short pulse of laser light can act as a source of acoustic energy for acoustic imaging. Although there are a number of mechanisms by which the light pulse may generate sound, all require a pulse of high peak power density and short duration. In this work, we address examples where the material is highly absorbing at the laser wavelength, and the sound is generated near the surface. In these cases, there exist two different mechanisms which can convert the light to sound. The first is heating followed by expansion, and the second is generation of a plasma in the air above the surface. In the first case, sound generation occurs in the medium of interest and the energy efficiency can be very high, in the sense that no reflection losses occur. We present two applications from our own research.


1998 ◽  
Vol 177-181 ◽  
pp. 709-710 ◽  
Author(s):  
A.L. Barra ◽  
A. Caneschi ◽  
D. Gatteschi ◽  
R. Sessoli
Keyword(s):  

2018 ◽  
Vol 31 (4) ◽  
pp. 045007 ◽  
Author(s):  
Xiaorong Wang ◽  
Shlomo Caspi ◽  
Daniel R Dietderich ◽  
William B Ghiorso ◽  
Stephen A Gourlay ◽  
...  

1983 ◽  
Vol 211 (3) ◽  
pp. 677-682 ◽  
Author(s):  
P N Sanderson ◽  
I A Nieduszynski ◽  
T N Huckerby

Oligosaccharides with the general structure UA-(GlcNAc-GlcUA-)m-aManOH (m = 1-5) (where UA represents uronic acid, GlcNAc N-acetylglucosamine, GlcUA glucuronic acid and aManOH anhydromannitol) were prepared from low-sulphated heparan sulphates of bovine lung origin by nitrous acid deaminative cleavage followed by reduction. Analysis of the methylene signals in the 100 MHz 13C-n.m.r. spectrum of the tetrasaccharide (m = 1) shows that, whereas the extent of C-6 O-sulphation in the GlcNAc is approx. 65%, in the aManOH [formerly a GlcNSO3 (N-sulphoglucosamine) residue in the parent heparan sulphate] it is only approx. 10%. In the higher oligosaccharides (m = 2-5) the gross extent of C-6 O-sulphation of GlcNAc residues falls systematically with increasing oligosaccharide size, whereas that in the aManOH residues remains below 10%. There is also evidence that the C-6 O-sulphation of the GlcNAc residues is confined to the GlcNAc residue adjacent to the non-reducing terminal uronic acid residue. It is therefore tentatively proposed that the GlcNAc in the sequence -GlcNSO3-UA-GlcNAc- might be a favoured substrate for the 6-O-sulphotransferase. It is concluded that in the low-sulphated heparan sulphates GlcNSO3 residues that do not occur in (GlcNSO3-UA-)n blocks tend to have a significantly smaller extent of C-6 O-sulphation than do GlcNAc residues that occur in -GlcNSO3-UA-GlcNAc-GlcUA-GlcNSO3-sequences.


2009 ◽  
Vol 19 (3) ◽  
pp. 1240-1243 ◽  
Author(s):  
P. Ferracin ◽  
B. Bingham ◽  
S. Caspi ◽  
D.W. Cheng ◽  
D.R. Dietderich ◽  
...  
Keyword(s):  

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