3 results match your criteria Chemicke Listy[Journal]

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Formic acid, a ubiquitous but overlooked component of the early Earth atmosphere.

Chemistry 2020 Apr 15. Epub 2020 Apr 15.

Fyzikalni ustav Akademie ved Ceske republiky, Oddeleni radiacni a chemicke fyziky, CZECH REPUBLIC.

Terrestrial volcanism has been one of the dominant geological forces shaping our planet since its earliest existence. Its associated phenomena, like atmospheric lightning and hydrothermal activity, provide a rich energy reservoir for chemical syntheses. Based on our laboratory simulations, we propose that on the early Earth volcanic activity inevitably led to a remarkable production of formic acid through various independent reaction channels. Read More

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http://dx.doi.org/10.1002/chem.202000323DOI Listing

[Reproduction of: J. Heyrovský, Chemické Listy 1922, 16, 256-264].

Authors:
J Heyrovský

Chem Rec 2012 Feb;12(1):17-25

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http://dx.doi.org/10.1002/tcr.201200103DOI Listing
February 2012
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[Causes of corrosive mechanical defects in isoelastic endoprostheses].

Acta Chir Orthop Traumatol Cech 1993 ;60(5):311-4; discussion 314-5

Vysoká skola chemicko-technologická, Fakulta chemické technologie, Praha.

Within the framework of evaluation of endoprostheses of the hip joint reoperated at the orthopaedic clinic of the Institute for Postgraduate Medical Training, Faculty Hospital Na Bulovce in Prague in the course of six years the authors made a more detailed analysis of the group of isoelastic POLDI endoprostheses which displayed obvious signs of corrosion. The specimens from this group were subjected to evaluation focused on corrosion, metallographic and fractographic evaluation. In impaired wires of isoelastic endoprostheses the fracture surfaces have a fatigue character where a corrosion fatigue mechanism may be assumed as well fracture with a dominant mechanical component of stress. Read More

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February 1994
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