Discussion on “The St. Bartholomew's Hospital X-ray tube for one million volts” before the North-Western Centre, at Manchester, 18th March, 1939

1939 ◽  
Vol 85 (516) ◽  
pp. 676-678
Keyword(s):  
X Ray ◽  
The North ◽  
North Western

scholarly journals The metal artefacts from the prehistoric walled enclosure of Castelo Velho de Freixo de Numão within the early metallurgy of north-west of Iberian Peninsula

2019 ◽  
pp. 305-328
Author(s):  
Carlo Bottaini ◽  
Ignacio Montero-Ruiz ◽  
Susana Lopes ◽  
Lídia Baptista ◽  
Sérgio Gomes ◽  
...  
Keyword(s):  
Iberian Peninsula ◽  
Analytical Study ◽  
Pure Copper ◽  
X Ray ◽  
North West ◽  
The North ◽  
Metal Artefacts ◽  
Non Destructive ◽  
Arsenical Copper ◽  
North Western

This paper deals with the preliminary results of the typological and analytical study of a collection of copper-based objects found at the site of Castelo Velho (Freixo de Numão). This collection is associated to different contexts from the 3rd millennium BC (Chalcolithic). The analyses, performed by non-destructive X-ray fluorescence (XRF), show that the metals were produced with almost pure copper and arsenical copper (> 2% As). Impurities, such as As (<2%), Fe, Bi, Ag, Sn, Sb and Ni, were also identified, likely due to their presence in the ores used for the production of the objects. The data suggest that the metals from Castelo Velho may be framed within the metallurgical production already known for the Chalcolithic of the North-Western Iberian Peninsula.

scholarly journals Characterization of the optical and X-ray properties of the north-western wisps in the Crab nebula

2013 ◽  
Vol 433 (4) ◽  
pp. 3325-3335 ◽  
Author(s):  
T. Schweizer ◽  
N. Bucciantini ◽  
W. Idec ◽  
K. Nilsson ◽  
A. Tennant ◽  
...  
Keyword(s):  
Crab Nebula ◽  
X Ray ◽  
The North ◽  
The Crab Nebula ◽  
North Western

U-Pb on Zircon and Monazite Geochronology of Granites of the Zhytomyr and Sheremetiv Complexes, the North-Western Region of the Ukrainian Shield

2018 ◽  
Vol 40 (2) ◽  
pp. 63-85 ◽  
Author(s):  
L. Shumlyanskyy ◽  
L. Stepanyuk ◽  
S. Claesson ◽  
K. Rudenko ◽  
A. Bekker
Keyword(s):  
Ukrainian Shield ◽  
Western Region ◽  
The North ◽  
North Western

Assessment of the Reactions of Algal Communities to Influence of Climatic Factors in the North-Western Black Sea Ecosystem

2018 ◽  
Vol 20 (2) ◽  
pp. 121-134 ◽  
Author(s):  
G. G. Minicheva ◽  
V. N. Bolshakov ◽  
E. S. Kalashnik ◽  
A. B. Zotov ◽  
A. V. Marinets
Keyword(s):  
Black Sea ◽  
Climatic Factors ◽  
Algal Communities ◽  
The North ◽  
North Western
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