"Roubal, Zden\u011Bk" . . . "2009-04-23+02:00"^^ . . . "The light negative ions in air have positive influence on human health so measurement of their concentration is the object of interest. This paper deals with construction proposals for the gerdien tube (cylindrical aspiration condenser), which is one of the possible sensors of air ion concentration. With the described method of it is possible to measure the air ions in large range of mobility with good resolution."@en . "RIV/00216305:26220/09:PU80498!RIV10-MSM-26220___" . . . "978-80-214-3870-5" . "Proceedings of the 15 th conference student eeict 2009 - volume 3" . . "26220" . "5"^^ . "The light negative ions in air have positive influence on human health so measurement of their concentration is the object of interest. This paper deals with construction proposals for the gerdien tube (cylindrical aspiration condenser), which is one of the possible sensors of air ion concentration. With the described method of it is possible to measure the air ions in large range of mobility with good resolution." . . "329336" . . "1"^^ . "New Construction of Gerdien Tube with Active Shielding and Ion-trap"@en . "FEKT VUT v Brn\u011B" . "1"^^ . . "NOVPRESS s.r.o" . "Brno" . . . . . "[4F157CD66A2E]" . . "New Construction of Gerdien Tube with Active Shielding and Ion-trap" . . "RIV/00216305:26220/09:PU80498" . "S" . "New Construction of Gerdien Tube with Active Shielding and Ion-trap"@en . . "Gerdien tube, aspiration condenser, air ions, active shielding, electrometr"@en . "New Construction of Gerdien Tube with Active Shielding and Ion-trap" .