1968 ◽  
Vol 1 (9) ◽  
pp. 945-946 ◽  
Author(s):  
J H Smith ◽  
E R Vance ◽  
D A Wheeler

2008 ◽  
Vol 16 (3) ◽  
pp. 127-132 ◽  
Author(s):  
E. MacA. Gray ◽  
I. F. Bailey

2007 ◽  
Vol 40 (3) ◽  
pp. 489-495 ◽  
Author(s):  
M. Potter ◽  
H. Fritzsche ◽  
D. H. Ryan ◽  
L. M. D. Cranswick

Neutron diffraction measurements on weakly scattering or highly absorbing samples may demand custom mounting solutions. Two low-background sample holders based on inexpensive single-crystal silicon are described. One uses a conventional cylindrical geometry and is optimized for weakly scattering materials, while the other has a large-area flat-plate geometry and is designed for use with highly absorbing samples. Both holders yield much lower backgrounds than more conventional null-matrix or null-scattering materials and are essentially free from interfering Bragg peaks.


Metals ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 2340-2350 ◽  
Author(s):  
Takuo Okuchi ◽  
Akinori Hoshikawa ◽  
Toru Ishigaki

2002 ◽  
Vol 40 (5) ◽  
pp. 553-580 ◽  
Author(s):  
B. Grosdidier ◽  
J.L. Bos ◽  
J.G. Gasser ◽  
R. Bellissent

2002 ◽  
Vol 312-314 ◽  
pp. 99-103 ◽  
Author(s):  
B. Grosdidier ◽  
M. Nigon ◽  
J. Auchet ◽  
J.G. Gasser

1965 ◽  
Vol 8 (1) ◽  
pp. 105-107 ◽  
Author(s):  
M. S. Macphail

A well-known theorem of Copping [2] states that a conservative matrix with a bounded left inverse cannot evaluate a bounded divergent sequence. (Definitions are given in the next paragraph.) A proof was given by Parameswaran [3, Theorem 6. 1], using only the simplest Banach-space ideas. This proof, however, is valid only for co-regular methods; it was stated in [3, Theorem 6. 2] that a co-null matrix cannot have a bounded left inverse, but the proof there given is incorrect, as it uses for co-null methods a theorem established only for co-regular. It would be desirable to have a short independent proof of this known result, which excludes co-null matrices from consideration in Copping' s theorem. This is furnished by the slightly more general result given below.


1966 ◽  
Author(s):  
S.S. Sidhu ◽  
L. Heaton ◽  
M.H. Mueller ◽  
F.P. Campos ◽  
K.D. Anderson ◽  
...  

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