scholarly journals Micro-Computed Tomographic Applications in the Geological Sciences

2021 ◽  
Vol 27 (S1) ◽  
pp. 3462-3463
Author(s):  
Tara Selly ◽  
James Schiffbauer
Author(s):  
John T. Armstrong

One of the most cited papers in the geological sciences has been that of Albee and Bence on the use of empirical " α -factors" to correct quantitative electron microprobe data. During the past 25 years this method has remained the most commonly used correction for geological samples, despite the facts that few investigators have actually determined empirical α-factors, but instead employ tables of calculated α-factors using one of the conventional "ZAF" correction programs; a number of investigators have shown that the assumption that an α-factor is constant in binary systems where there are large matrix corrections is incorrect (e.g, 2-3); and the procedure’s desirability in terms of program size and computational speed is much less important today because of developments in computing capabilities. The question thus exists whether it is time to honorably retire the Bence-Albee procedure and turn to more modern, robust correction methods. This paper proposes that, although it is perhaps time to retire the original Bence-Albee procedure, it should be replaced by a similar method based on compositiondependent polynomial α-factor expressions.


1988 ◽  
Vol 39 (1) ◽  
pp. 144-149 ◽  
Author(s):  
I STOCKLEY ◽  
C GETTY ◽  
A DIXON ◽  
I GLAVES ◽  
H EUINTON ◽  
...  

VASA ◽  
2019 ◽  
Vol 48 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Cheong J. Lee ◽  
Rory Loo ◽  
Max V. Wohlauer ◽  
Parag J. Patel

Abstract. Although management paradigms for certain arterial trauma, such as aortic injuries, have moved towards an endovascular approach, the application of endovascular techniques for the treatment of peripheral arterial injuries continues to be debated. In the realm of peripheral vascular trauma, popliteal arterial injuries remain a devastating condition with significant rates of limb loss. Expedient management is essential and surgical revascularization has been the gold standard. Initial clinical assessment of vascular injury is aided by readily available imaging techniques such as duplex ultrasonography and high resolution computed tomographic angiography. Conventional catheter based angiography, however, remain the gold standard in the determination of vascular injury. There are limited data examining the outcomes of endovascular techniques to address popliteal arterial injuries. In this review, we examine the imaging modalities and current approaches and data regarding endovascular techniques for the management popliteal arterial trauma.


The Lancet ◽  
2005 ◽  
Vol 365 (9456) ◽  
pp. 305-311 ◽  
Author(s):  
D ROCKEY ◽  
E PAULSON ◽  
D NIEDZWIECKI ◽  
W DAVIS ◽  
H BOSWORTH ◽  
...  

2014 ◽  
Vol 62 (S 01) ◽  
Author(s):  
T. Attmann ◽  
C. Grothusen ◽  
A. Reinsdorf ◽  
J. Schöttler ◽  
A. Haneya ◽  
...  
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