Zobrazeno 1 - 10
of 22
pro vyhledávání: '"K.-H. Bernhardt"'
Publikováno v:
History of Geo- and Space Sciences, Vol 1, Iss 2, Pp 49-61 (2010)
In the late 19th century, Charles Egeson, a map compiler at the Sydney Observatory, carried out some of the earliest research on climatic cycles, linking them to about 33-year cycles in solar activity, and predicted that a devastating drought would s
Externí odkaz:
https://doaj.org/article/44327e5f2e094af7aadb3f46bfbe2ba4
Publikováno v:
Meteorologische Zeitschrift, Vol 20, Iss 4, Pp 461-463 (2011)
Externí odkaz:
https://doaj.org/article/fce72c75aa934427adedc91864a1a2dc
Autor:
Othild Schwartzkopff, Franz Halberg, G. Cornélissen, K.-H. Bernhardt, Mary Sampson, D. Sonntag
Publikováno v:
History of Geo-and Space Sciences, Vol 1, Iss 2, Pp 49-61 (2010)
In the late 19th century, Charles Egeson, a map compiler at the Sydney Observatory, carried out some of the earliest research on climatic cycles, linking them to about 33-year cycles in solar activity, and predicted that a devastating drought would s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce953997e1494c6d38e02e13704d4570
http://www.hist-geo-space-sci.net/1/49/2010/hgss-1-49-2010.pdf
http://www.hist-geo-space-sci.net/1/49/2010/hgss-1-49-2010.pdf
Publikováno v:
Vacuum. 47:505-509
According to all testing procedures which have been standardized so far, the pumping speed of vacuum pumps is measured by injecting a stationary flow of gas into a test dome and measuring the equilibrium pressure. This stationary method is difficult
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5c260d36d8f104632edfca4867411fe
https://doi.org/10.1016/0042-207x(96)00009-7
https://doi.org/10.1016/0042-207x(96)00009-7
Publikováno v:
Vakuum in Forschung und Praxis. 7:183-193
The term pumping speed of a vacuum pump denotes the volume flow rate of gas removed by the pump. In a measurement of the pumping speed it has to be taken into account that the volume of a quantity of gas depends on pressure and temperature. The prese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d75a7a9d29f8d3c3414efadfe8c15cd
https://doi.org/10.1002/vipr.19950070305
https://doi.org/10.1002/vipr.19950070305
Publikováno v:
Vacuum. 44:721-723
A magnetically levitated turbopump is experimentally tested with hammer strokes, continuous vibrations and angular movements. The influence of the two latter effects are theoretically calculated. The shock and continuous vibration tolerance in the fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d659f5fb8bf2495caadbf30c546fc4b
https://doi.org/10.1016/0042-207x(93)90133-u
https://doi.org/10.1016/0042-207x(93)90133-u
Publikováno v:
Fusion Technology. 14:466-471
The feasibility of development of large vacuum components for operation in fusion machines has been investigated in the framework of the European Fusion Technology Programme. The requirements and t...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07f92176a21696591a2c434b33f5a6d1
https://doi.org/10.13182/fst88-a25176
https://doi.org/10.13182/fst88-a25176
Autor:
K. H. Bernhardt
Publikováno v:
Zeitschrift für Naturforschung A. 30:528-532
Superconducting niobium carbonitride wires Nb(CyNx) has been prepared by a diffusion process in two steps, first diffusing carbon from methane into niobium wires and then nitrogen into these carbonized samples. The optimum conditions for these prepar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a49bf8e933cd52ac4302d62134c72b67
https://doi.org/10.1515/zna-1975-0422
https://doi.org/10.1515/zna-1975-0422
Autor:
K.‐H. Bernhardt
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 1:136-139
A formula for simple calculation of a turbomolecular pump’s pumping speed is developed. The formula includes only mechanical data and a statistical factor k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f744416069971b827a7154ec18756e6d
https://doi.org/10.1116/1.572058
https://doi.org/10.1116/1.572058
