No description available.

Ce mémoire avec article tente de comprendre les motifs de non-recours aux services publics de soins prénatals selon la perspective des femmes âgées de 18 ans et plus vivant dans la commune rurale de Kokologho au Burkina Faso. Cette étude qualitative inspirée de l’ethnographie a utilisé différentes méthodes de collecte de données, dont l’observation participante, vingt-deux entrevues individuelles semi-dirigées avec des femmes qui sont en recours tardif aux soins prénatals et huit entrevues informelles avec des informateurs clés identifiés dans la communauté. Il ressort de l'analyse que le non-recours aux soins prénatals ne résulte pas seulement de facteurs liés à l’individu, mais de différents facteurs socioculturels, politiques et institutionnels. Nos résultats suggèrent que l’antagonisme des normes sociales entourant la grossesse et celles médicales, de même que les défaillances du système de soins et de la politique d’exemption des soins préventifs durant la grossesse entravent le recours effectif aux soins prénatals.

Extr. de: Th.--Université libre d'Amsterdam, 1980. / Bibliogr. p. 195-199. Th. soutenue sous le titre : "De Informele sector van Ouagadougou en Dakar, een studie naar de ontwikkelingsmogelijkheden van kleine bedrijven in twee Westafrikanse hoofdsteden"

Th.--Paris 5, 1971.

Thesis (Ph. D.)--Purdue University, 1986. / Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (p. 408-417).

Frankfurt (Main), Universiẗat, Diss., 2003.

No description available.

Extr. de: Th. doct.--Géogr.--Paris 7, 2000. / En appendice, choix de documents. Bibliogr. p. 385-409. Notes bibliogr. Index.

Field and laboratory investigations were conducted in Burkina Faso to diagnose the causes of severe outbreaks of Bemisia tabaci populations and gênerai failures of chemical control against this pest in cotton. / Field and laboratory investigations were conducted in Burkina Faso to diagnose the causes of severe outbreaks of Bemisia tabaci populations and general failures of chemical control against this pest in cotton. The research efforts were oriented in the following three areas: I) the susceptibility of B. tabaci populations and its parasitoids to cotton insecticides; I) the susceptibility of B. tabaci populations and its parasitoids to cotton insecticides, a) conventional insecticides, b) novel insecticides; II) the relative abundance of B. tabaci and its parasitoids in the field; III) the biological activities of some botanical extracts as alternative insecticides against the pest.

The potential of Smicronyx umbrinus Hustache and Smicronyx guineanus Voss (Coleoptera: Curculionidae) as biocontrol agents of Striga hermonthica (Del) Benth was investigated at both population levels of Striga and Smicronyx spp. in the field in Burkina Faso. High population levels of Smicronyx spp. resulted in higher percentages of seed-pod galls although the weevils' adult populations decreased during S. hermonthica seed capsule production. Smicronyx spp. were observed galling Striga aspera (Willd) Benth capsules ca. 60 days before S. hermonthica emerged in sorghum fields. The weevils also galled S. hermonthica stems at soil level and Sm. umbrinus was found to be the main species causing this symptom. Smicronyx spp. also galled Alectra vogelii Benth stems, Smicronyx dorsomaculatus Cox being the main species attacking this parasitic weed. Another Smicronyx species not yet described was collected on A. vogelii. Stem galls appeared to be more effective nutrient sinks than fruit galls. The weevils alone did not have sufficient impact to be considered successful biocontrol agents for S. hermonthica but they could contribute to an integrated control strategy against Striga. Smicronyx spp. have a good potential as biocontrol agents for A. vogelii.