Comparative study of Nd:GdVO4 and Nd:YVO4, and test of a composite Nd:YVO4/YVO4 rod using a new method of bonding

Author(s):  
Julien Didierjean ◽  
François Balembois ◽  
Frédéric Druon ◽  
Patrick Georges ◽  
Johan Petit ◽  
...  
Keyword(s):  
Author(s):  
K. C. Tsou ◽  
Mahin Khatami

Recently, Leunberger and Novikoff (1) have shown that the endothelial cells are the primary sites of Na+-K+-ATPase, a key mechanism in the control of hydration of cornea. Since this enzyme would be a useful marker for our study of endothelial damage by CO2 laser (2), we have undertaken a comparative study for the localization of this enzyme at ultrastructural level with different methods. In the course of this work we developed a new method with the use of 5-nitroindoxyl phosphate as a synthetic substrate. This new substrate, like p-nitrophenyl phosphate (3), meets the requirements for the demonstration of the K+ activated step of dephosphorylation of ATPase. In addition, it can be used with glutaraldehyde fixed tissue, thereby offering an important advantage over the previous method (3).Rabbit corneas were freshly excised under pentobarbitol anesthesia.


1964 ◽  
Vol 44 (3) ◽  
pp. 249-252 ◽  
Author(s):  
J. Waddington ◽  
A. K. Storgaard ◽  
W. C. McDonald

An inoculation technique, in which cultures of Leptosphaerulina briosiana (Poll.) Graham & Luttrell grown on filter paper soaked in 20% mixed vegetable juice, V-8 brand, are suspended over alfalfa plants and allowed to discharge spores onto them, was developed and compared with previously described inoculation methods. The new method was found to be superior and the inoculum, in contrast to that of the similar V-8 agar method, was more easily prepared and applied, could be watered to prevent drying our and could be stored in a frozen state between inoculations. Less than 5% of the seedlings and mature plants of four species of Medicago inoculated by this method appeared to be resistant.


2021 ◽  
Vol 27 (4) ◽  
pp. 99-101
Author(s):  
Andrei P. Sereda

In the editorial comment on the article A New Method of Intraoperative Reposition and Holding of Bone Fragments with Ty-Raps the advantages and disadvantages of the authors method are discussed. The advantages include availability, low cost, convenience and reliability. At the same time, it may lead to excessive devascularization of bone fragments with the risk of delayed union or even non-union. Only a comparative study on a large number of patients can confirm or refute these concerns. The comment also contains a brief review of articles on this issue.


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