Comparative electrophoretic investigation of some enzymes in extracts from different growth zones ofVicia faba L. Root

1970 ◽  
Vol 12 (6) ◽  
pp. 378-381 ◽  
Author(s):  
J. Sahulka
Keyword(s):  
Ofvicia Faba ◽  
Growth Zones

Isoenzymes of lactate dehydrogenase in the root growth zones ofVicia faba L.

1972 ◽  
Vol 14 (2) ◽  
pp. 170-172 ◽  
Author(s):  
Věra Hadačová ◽  
Jiřina Švachulová
Keyword(s):  
Lactate Dehydrogenase ◽  
Root Growth ◽  
Ofvicia Faba ◽  
Growth Zones

Heterogeneity in Cell Behaviour in Primordia ofVicia faba

Chromosoma ◽  
1968 ◽  
Vol 25 (4) ◽  
pp. 470-474 ◽  
Author(s):  
D. Davxdson ◽  
R. D. Macleod
Keyword(s):  
Cell Behaviour ◽  
Ofvicia Faba

Accuracy and precision in stock separation of north-east Arctic and Norwegian coastal cod by otoliths - comparing readings, image analyses and a genetic method

2005 ◽  
Vol 56 (5) ◽  
pp. 753 ◽  
Author(s):  
Erik Berg ◽  
Tuula H. Sarvas ◽  
Alf Harbitz ◽  
Svein Erik Fevolden ◽  
Arnt Børre Salberg
Keyword(s):  
Visual Inspection ◽  
Gadus Morhua ◽  
Atlantic Cod ◽  
Complete Separation ◽  
Arctic Cod ◽  
Genetic Method ◽  
North East ◽  
Accuracy And Precision ◽  
Growth Zones ◽  
The Difference

The distinction between north-east Arctic cod and Norwegian coastal cod, two major groups of Atlantic cod (Gadus morhua L.), has for many years been based on different distance and shape similarities between the two first translucent growth zones in the otoliths, subjectively decided by visual inspection in a binocular. To analyse the certainty of this technique, four independent readers have classified 263 cod otoliths in total from five different geographical areas. For three of the readers, between 82% and 89% of the classification results coincided with independent results based on genetic analyses. Further, 38 cod otoliths, where the readers were certain of the classification (21 north-east Arctic cod and 17 coastal cod) were classified by several image analysis methods. A complete separation was obtained by using the ratio of the circumferences of the two zones, providing a typical ratio of approximately 2 for coastal and 1.5 for north-east Arctic cod. The otolith method for separating the two types of cod has been considered adequately accurate in assessing the two stocks of cod. However, the method is sensitive to subjective interpretation, and action needs to be taken to minimise the difference in interpretation among otolith readers.

Local solidification thermal parameters affecting the eutectic extent in Sn-Cu and Sn-Bi solder alloys

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Rafael Kakitani ◽  
Cassio Augusto Pinto da Silva ◽  
Bismarck Silva ◽  
Amauri Garcia ◽  
Noé Cheung ◽  
...  
Keyword(s):  
Cooling Rate ◽  
Thermal Gradient ◽  
Experimental Spectrum ◽  
Eutectic Growth ◽  
Solidification Velocity ◽  
Solder Alloys ◽  
Content Type ◽  
Growth Zones ◽  
Coupled Growth

Purpose Overall, selection maps about the extent of the eutectic growth projects the solidification velocities leading to given microstructures. This is because of limitations of most of the set of results when obtained for single thermal gradients within the experimental spectrum. In these cases, associations only with the solidification velocity could give the false impression that reaching a given velocity would be enough to reproduce a result. However, that velocity must necessarily be accompanied by a specific thermal gradient during transient solidification. Therefore, the purpose of this paper is to not only project velocity but also include the gradients acting for each velocity. Design/methodology/approach Compilation of solidification velocity, v, thermal gradient, G, and cooling rate, Ṫ, data for Sn-Cu and Sn-Bi solder alloys of interest is presented. These data are placed in the form of coupled growth zones according to the correlated microstructures in the literature. In addition, results generated in this work for Sn-(0.5, 0.7, 2.0, 2.8)% Cu and Sn-(34, 52, 58)% Bi alloys solidified under non-stationary conditions are added. Findings When analyzing the cooling rate (Ṫ = G.v) and velocity separately, in or around the eutectic composition, a consensus cannot be reached on the resulting microstructure. The (v vs. G) + cooling rate diagrams allow comprehensive analyzes of the combined v and G effects on the subsequent microstructure of the Sn-Cu and Sn-Bi alloys. Originality/value The present paper is devoted to the establishment of (v vs. G) + cooling rate diagrams. These plots may allow comprehensive analyses of the combined v and G effects on the subsequent microstructure of the Sn-Cu and Sn-Bi alloys. This microstructure-processing mapping approach is promising to predict phase competition and resulting microstructures in soldering of Sn-Cu and Sn-Bi alloys. These two classes of alloys are of interest to the soldering industry, whereas manipulation of their microstructures is considered of utmost importance for the metallurgical quality of the product.

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