Eléments de Pathologie végétale appliquée à l'Agronomie et à la Sylviculture
Oviposition Deterrance Activity in Some Lamiaceae Plants against Some Insect Pests
Published in Zeitschrift für Naturforschung C
Acetone extracts of 9 out of 12 plants of Lamiaceae family exhibited high oviposition deterrance (OD) activity against the potato tuber moth, P. operculella (PTM) 4 of these completely prevented egg laying by the latter and A. aegypti. In case of PTM this activity persisted for a varying number of days. 3 of them were also active against D. koenigi...
Epidemiologic studies of chagas' disease in the urban zone of Teresina. State of Piauí, northeastern Brazil
The triatomine species Rhodnius nasutus and Triatoma pseudomaculata were captured on palm trees Orbignya martiana "babaçu ", in the urban zone of Teresina. This kind of palm tree is largely distributed in Piauí State. The predominant species was R. nasutus; the young in stars predominated. The infestation index of palm trees and the infection index...
Viral and bacterial vectors of immunogenes.
Published in Vaccine
A recent development in the production of experimental vaccines has been the use of the smallpox vaccine virus (vaccinia virus) as a carrier (vector) of the genes (immunogenes) which code for the protection-inducing proteins (immunogens) of unrelated viruses. The potential of these vector vaccines lies in the hope that such a vaccine would be cheap...
Yeast communities from host plants and associated Drosophila in southern arizona: new isolations and analysis of the rel...
Published in Oecologia
The yeast communities from slime fluxes of three deciduous trees (Prosopis juliflora, Populus fremontii and Quercus emoryi) and the necroses of two cacti (Opuntia phaeacantha and Carnegiea gigantea) were surveyed in the region of Tucson, Arizona. In addition, the yeasts carried by dipterans associated with the fluxes or necroses (Drosophila carbona...
Field studies on Lyme disease in North America.
Published in The Canadian journal of infectious diseases = Journal canadien des maladies infectieuses
The primary tick vector of Borrelia burgdorferi in eastern and central North America is Ixodes dammini; in western North America, Ixodes pacificus. Searching for the appropriate vector is the first step in determining whether a region is endemic and enzootic for the spirochete B burgdorferi, the etiological agent of Lyme disease, followed by examin...
Environment, arbovirus transmission and control of epidemics
In order to illustrate the relationships between the biotopes (or phytogeographical zones), arbovirus vectors and vertebrate hosts (including man), and epidemiology, current knowledge on the transmission of Yellow Fever virus in West Africa is reported. A dynamic scheme has been devised to integrate the observed geographical distribution of cases a...
Hemolymphatic components in vectors of Trypanosoma cruzi: study in several species of the subfamily Triatominae (Hemipte...
The members of the subfamily Triatominae (Hemiptera : Reduviidae) comprise a great number of species of medical importance in the transmission of the T. cruzi (American trypanosomiasis). The aim of this study was to contribute to the knowledge about the chemical composition in proteins, lipids, lipoproteins, and carbohydrates of vectors of Chagas' ...
Instantaneous complex power applied to three-phase machines
The theory presented in this paper was primarily developed to give a physical interpretation for the instantaneous power flow on a three-phase induction machine, without a neutral conductor, on any operational state and may be extended to any three-phase load. It is a vectorial interpretation of the instantaneous reactive power theory presented by ...
Instantaneous complex power applied to three-phase machines
The theory presented in this paper was primarily developed to give a physical interpretation for the instantaneous power flow on a three-phase induction machine, without a neutral conductor, on any operational state and may be extended to any three-phase load. It is a vectorial interpretation of the instantaneous reactive power theory presented by ...
