Zobrazeno 1 - 10
of 91
pro vyhledávání: '"J. Siivola"'
Autor:
J. Siivola
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 49, Iss 1, Pp 59-64 (1977)
Baddeleyite is described from a basic intrusion from southeastern Finland. Microprobe analyses resulted in the following chemical composition besides ZrO2: HfO2 0.9‒1.5, FeO 0.2, TiO2 < 0.1 and Al2O3 < 0.1 percent. The mineral occurs together with
Externí odkaz:
https://doaj.org/article/a29d14ffed744c10a95fc5e2b4bd42c1
Autor:
J. Siivola
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 42, Pp 37-51 (1970)
In the first part of the paper theoretical principles of the electron microprobe analysis are reviewed. Stress is laid on the absorption correction which is discussed in greater detail. The second part deals with a series of measurements demonstratin
Externí odkaz:
https://doaj.org/article/e4ad39be6e234fecb4839753497c2b9f
Autor:
J. Siivola
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 42, Pp 33-36 (1970)
This paper reports the occurrence of ilmenorutile (niobian rutile) and striiverite (tantalian rutile) in two specimens from the Penikoja pegmatite in Somero, SW Finland. One of the specimens contains strüverite as inclusions in pseudoixiolite, where
Externí odkaz:
https://doaj.org/article/4a7e5e823434494089e16d4e1a05b912
Autor:
J. Siivola
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 43, Iss 1, Pp 1-6 (1971)
The paper describes the results obtained from the x-ray Kß-band spectra of Al for andalusite, sillimanite and kyanite. The fine structure of the aluminium Kß-band is correlated with the crystal structure of these minerals. It is considered that the
Externí odkaz:
https://doaj.org/article/320db9a6807041a1a41ce3c4d00a39ee
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 43, Iss 2, Pp 221-231 (1971)
Mineral assemblages containing corundum, sapphirine and kornerupine are present in a high-grade metamorphic amphibolite-hornblendite formation near the great granulite complex of Finnish Lapland. A low-grade metamorphism has slightly retrogressed the
Externí odkaz:
https://doaj.org/article/5804c45f8a47457894a92c49a513f39b
Autor:
J. Siivola
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 41, Pp 85-91 (1969)
The evaporation of some alkali metals during the electron microprobe analyses was recorded. The results show that both increasing and decreasing alkali intensities can be obtained. The results are given in the form of graphs which show how the evapor
Externí odkaz:
https://doaj.org/article/a0955e6259124356a403a2eb5487d140
Autor:
J. Siivola
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 45, Iss 1, Pp 43-48 (1973)
A fourfold series of microprobe analyses was performed. The materials examined consisted of five specimens of garnet and one of silicate glass, all currently used as microprobe standards. During the microprobe data reduction, three, basically differe
Externí odkaz:
https://doaj.org/article/602d0e9db04f44938e77e2c526aebd8e
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 45, Iss 1, Pp 1-8 (1973)
This paper presents a new silicate, andremeyerite, from the Nyiragongo volcano in Zaire. The mineral occurs in the vesicles of a melilite-leucite-nephelinite block carried up by later nephelinite lava. The constituents of the vesicles are briefly des
Externí odkaz:
https://doaj.org/article/011214b4e24c499c957b0229375cdd8b
Publikováno v:
Acta Neurologica Scandinavica. 104:377-379
The existence of familial carpal tunnel syndrome (FCTS) as a separate autonomic entity has been discussed during the last few years. In order to contribute with more data to the literature, we report here the results of clinical. electrophysiological
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::025e2da891b58c3a1beb738c8ea89294
https://doi.org/10.1034/j.1600-0404.2001.00078.x
https://doi.org/10.1034/j.1600-0404.2001.00078.x
Publikováno v:
Acta neurologica Scandinavica. 104(6)
The existence of familial carpal tunnel syndrome (FCTS) as a separate autonomic entity has been discussed during the last few years. In order to contribute with more data to the literature, we report here the results of clinical. electrophysiological
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::347e60cfb292c03b203a77efbf09df71
https://pubmed.ncbi.nlm.nih.gov/11903093
https://pubmed.ncbi.nlm.nih.gov/11903093