Mosquito repellent plants are used in the rural areas of Zimbabwe despite the fact that very few of them have been biologically evaluated. Leaves of the plant Lippia javanica, were collected from Mumurwi village, Zimbabwe and evaluated for repellency against laboratory reared Aedes aegypti mosquitoes. Major plant compounds were identified using Thin Layer Chromatography (TLC) and Mass Spectrome...

Context: Electronic cigarettes (e-cigarettes) are becoming increasingly popular yet their effects on health remain unknown. Objective: To conduct the first comprehensive and standardized assessment of the acute impact of active and passive e-cigarette smoking on serum cotinine and lung function, as compared to active and passive tobacco cigarette smoking. Materials and methods: Fifteen smokers ...

CLINICALCHEMISTRY,Vol. 30, No. 10, 1984 1703 13. Cornelis R, Versieck J, MesaL, et al. The ultra-trace element vanadium in human serum. Biol Trace Element Res 3, 257-263 (1981). 14. Bello-Reuss EN, Grady TP, Mazumbar DC. Serum vanadium levels in chronic renal disease. Ann Intern Med 91, 743 (1979). 15. Prost EL, Hunt DP, Walderhaug MD, et al. Vanadium compounds in relation to inhibition of sodi...

Teflubenzuron baits were active against laboratory colonies of the red imported fire ant, Solenopsis invicta Buren. Worker brood production ceased soon after treatment and by four weeks posttreatment, most colonies were devoid of brood. Worker ants did not exhibit any direct effects from treatment with teflubenzuron. As is typical with most insect growth regulators, colony mortality was slow an...

of food and locality. Chilean populations of D. funebris are good to investigate the role of Drosophila breeding sites in isolation between populations and our understanding of the speciation process in animal species. Acknowledgments: Thanks are due to Enlace Proyect ELN012/14, Universidad de Chile. References: Brncic, D., and T. Dobzhansky 1957, Amer. Nat. 91: 127 – 128; Brncic, D., and P. Sá...

Castell, A. 2008. Fighting Tuberculosis – Structural Studies of Three Mycobacterial Proteins. Acta Universitatis Upsaliensis. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 567. 94 pp. Uppsala. ISBN 978-91-554-7325-9. This thesis presents the cloning, purification, crystallization, and structural studies of two unknown proteins from Mycobacte...

B. M oller (Ed.), North-Holland, 1991, pp 91{124. Structure and Design of Problem Reduction Generators Douglas R. Smith Kestrel Institute 3260 Hillview Avenue Palo Alto, California 94304-1216 ABSTRACT In this paper we present an axiomatic theory for a class of algorithms, called problem reduction generators, that includes dynamic programming, general branch-and-bound, and game tree search as s...