1.
Rev Sci Instrum
; 49(4): 469, 1978 Apr.
Article
in English
| MEDLINE
| ID: mdl-18699127
ABSTRACT
A hollow tube cathode using lanthanum hexaboride as the electron emitter has been designed and constructed. Tests in both argon and hydrogen indicate that this cathode is capable of producing over 800 A of electron current continuously, corresponding to over 25 A/cm(2) from the LaB(6). The cathode has been operated for over 300 h and exposed to air more than 100 times with no deterioration in emission. Projected lifetime is in excess of 3500 h for the sintered LaB(6) piece tested in this configuration. Construction details, performance characteristics, and discussions of space charge limits on emission are described.
Subject(s)
Boron Compounds/chemistry , Electrodes , Lanthanum/chemistry , Particle Accelerators/instrumentation , Equipment Design , Equipment Failure Analysis , Hot Temperature
2.
3.
East Afr Med J
; 47(3): 138-41, 1970 Mar.
Article
in English
| MEDLINE
| ID: mdl-5422953
Subject(s)
Hepatitis A/epidemiology , Adolescent , Adult , Child , Female , Hepatitis A/mortality , Humans , Kenya , Male
4.
East Afr Med J
; 46(12): 663-8, 1969 Dec.
Article
in English
| MEDLINE
| ID: mdl-5378176
5.
East Afr Med J
; 46(9): 497-506, 1969 Sep.
Article
in English
| MEDLINE
| ID: mdl-5363301
Subject(s)
Leptospira/isolation & purification , Leptospirosis/epidemiology , Agglutination Tests , Humans , Kenya , Male
6.
Thromb Diath Haemorrh
; 21(2): 234-44, 1969 Apr 30.
Article
in English
| MEDLINE
| ID: mdl-4976767
Subject(s)
Venoms/pharmacology , Africa , Antivenins , Blood Cell Count , Blood Coagulation Disorders/etiology , Blood Coagulation Tests , Blood Platelets , Edetic Acid/pharmacology , Fibrinogen/analysis , Fibrinolysis , Humans , Male , Middle Aged , Parotid Gland/analysis , Snake Bites/complications
7.
East Afr Med J
; 43(11): 525-9, 1966 Nov.
Article
in English
| MEDLINE
| ID: mdl-5956652