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House improvements and community participation in the control of Triatoma dimidiata re-infestation in Jutiapa, Guatemala
Monroy, Carlota;Bustamante, Dulce Maria;Pineda, Sandy;Rodas, Antonieta;Castro, Xochitl;Ayala, Virgilio;Qui?ónes, Javier;Moguel, Bárbara;
Cadernos de Saúde Pública , 2009, DOI: 10.1590/S0102-311X2009001300016
Abstract: the deterioration or absence of plaster walls in houses and poor hygienic conditions are the most important risk factors for indoor triatoma dimidiata infestation in guatemala. a cross-disciplinary study was conducted addressing t. dimidiata infestation, household hygiene, and housing construction. the study focused on local materials and cultural aspects (including gender roles) that could lead to long-term improvements in wall construction. a new plaster mix for walls was developed on the basis of laboratory studies on construction materials recommended by local villagers. four villages with persistent (post-spraying) t. dimidiata infestation were studied. in two villages, an ecosystem approach was implemented, and the homeowners conducted wall improvements and household sanitation with the support of the interdisciplinary team (the ecosystem intervention). in the other two villages, a vector control approach based on insecticide spraying was adopted (traditional intervention). both interventions were associated with a reduction in t. dimidiata infestation, but only the ecosystem approach produced important housing improvements (sanitation and wall construction) capable of preventing t. dimidiata re-infestation in the long term.
Risk factors for intradomiciliary infestation by the Chagas disease vector Triatoma dimidiatain Jutiapa, Guatemala
Bustamante, Dulce Maria;Monroy, Carlota;Pineda, Sandy;Rodas, Antonieta;Castro, Xochitl;Ayala, Virgilio;Qui?ónes, Javier;Moguel, Bárbara;Trampe, Ranferi;
Cadernos de Saúde Pública , 2009, DOI: 10.1590/S0102-311X2009001300008
Abstract: seventeen variables were evaluated as possible risk factors for the intradomiciliary infestation with triatoma dimidiata in 644 houses in jutiapa, guatemala. during 2004 the houses were assessed for vector presence and evaluated for hygiene, cluttering, material comfort, construction conditions and number of inhabitants, among other factors. chi-square analysis detected significant associations between vector presence and eight variables related to domestic sanitary and construction conditions. log-linear models showed that regardless of the age of the house, the odds of vector presence were 4.3 and 10 times lower in houses with a good socioeconomic status compared with poor and very poor houses respectively. log-linear models also pointed to a greater chance of vector presence when walls lacked plastering (3.85 times) or walls had low quality-incomplete plastering (4.56 times), compared with walls that were completely plastered. control strategies against t. dimidiata should include the introduction of better-quality but inexpensive plastering formulations and better sanitation practices should also be promoted among the population. such control strategies should not only reduce or eliminate infestation, but also prevent vector reinfestation.
Violence raciale, racisme et relations interethniques en contexte de guerre
Xochitl Leyva Solano
Ateliers du LESC , 2011, DOI: 10.4000/ateliers.8730
Abstract: Cet article s’inscrit d’une certaine manière dans la ligne de The anthropology of violence (Riches, 1986) et de La antropología de la paz y la guerra (Wolf, 2002). Je partage la position épistémologique de ces auteurs qui consiste à comprendre avant de juger, ainsi que leur volonté d’analyser l’acte de violence (the performance of violence) dans des contextes socioculturels spécifiques, plut t que la violence en soi. Je partage également leur intérêt pour comprendre et expliquer les n...
Partial Protection in Swine Challenged with Porcine Reproductive and Respiratory Syndrome Virus, Vaccinated Against Classical Swine Fever (PAV-250 Vaccine)
Angel Lozada De Gante,E. Pablo Correa Giron,Aleyda Romero Diaz,Susana Mendoza Elvira,Maria Antonia Coba Ayala,Laura Zapata Salinas,Horacio Lara Puente,Guadalupe Socci Escatel,Jose Galaviz Rodriguez,Xochitl G. Montalvo Aguilar,Abel Ciprian Carrasco
Journal of Animal and Veterinary Advances , 2012,
Abstract: In 2006, a study was carried out to determine whether the attenuated live virus vaccine PAV-250 against Classical Swine Fever (CSF) interacts as a triggering factor in the presentation, pathogenesis and course of the disease caused by the virulent virus of Porcine Reproductive and Respiratory Syndrome (PRRS). Seven Groups (G) were formed and 5 SPF piglets were randomly allocated to each group: G1, negative control; G2, positive control inoculated with PRRSv; G3, vaccinated with PAV-250; G7 and G5, vaccinated with PAV-250 on days-14 and -7, respectively and inoculated with PRRSv on day 0; G8 and G6, inoculated with PRRSv on days -14 and -7, respectively and vaccinated with PAV-250 on day 0. Clinical signs, total white blood cell count by the blood count technique, antibody profile against CSF virus with the ELISA technique and identification of viral nucleic acids by nested RT-PCR were evaluated. Group 6 and 8 showed an increase in clinical signs and groups 5 and 7 did not show apparent clinical signs; body temperature following inoculation increased by 1.5°C on average during 5 days and it subsequently returned to normal (p>0.005). Group 5 and 7 showed post-vaccination leukopenia and post-inoculation leukocytosis and post-vaccination and post-inoculation leukopenia was detected in groups 6 and 8 (p<0.005). In the antibody profile against CSF in groups 5 and 7, antibody rates of 80 and 86%, respectively, were detected; group 6 and 8 had mean antibody rates of 62 and 60%, respectively (p<0.001). When, challenged with CSF virulent Ames strain, these percentages remained constant. Pigs previously vaccinated with the PAV-250 strain did not show clinical and pathological changes when they were infected with the PRRS virus, however, in pigs not vaccinated against CSF and infected with PRRS virus and subsequently with CSF pathogenic virus, the disease worsened, with a 100% mortality rate.
Observations on the propagation of Taxus globosa Schltdl
Robert Nicholson,Diana Xochitl Munn
Boletín de la Sociedad Botánica de México , 2003,
Chapter 12: Human Microbiome Analysis
Xochitl C. Morgan,Curtis Huttenhower
PLOS Computational Biology , 2012, DOI: 10.1371/journal.pcbi.1002808
Abstract: Humans are essentially sterile during gestation, but during and after birth, every body surface, including the skin, mouth, and gut, becomes host to an enormous variety of microbes, bacterial, archaeal, fungal, and viral. Under normal circumstances, these microbes help us to digest our food and to maintain our immune systems, but dysfunction of the human microbiota has been linked to conditions ranging from inflammatory bowel disease to antibiotic-resistant infections. Modern high-throughput sequencing and bioinformatic tools provide a powerful means of understanding the contribution of the human microbiome to health and its potential as a target for therapeutic interventions. This chapter will first discuss the historical origins of microbiome studies and methods for determining the ecological diversity of a microbial community. Next, it will introduce shotgun sequencing technologies such as metagenomics and metatranscriptomics, the computational challenges and methods associated with these data, and how they enable microbiome analysis. Finally, it will conclude with examples of the functional genomics of the human microbiome and its influences upon health and disease.
Contagion of Sovereign Debt in the Eurozone  [PDF]
Astrid Ayala, Szabolcs Blazsek
Theoretical Economics Letters (TEL) , 2014, DOI: 10.4236/tel.2014.41016

This study reports contagion and interdependence of quarterly debt to gross domestic product (GDP) among the member states of the Eurozone over the period 2000 Q4 to 2012 Q1. We test for contagion and interdependence in two steps. First, we define an indicator variable of increasing debt to GDP for each country during the period following the United States financial crisis, by using unit root tests incorporating structural changes and breaking trend regressions. Second, the indicator variable is included in the latent-factor panel data model to separate contagion and interdependence of debt to GDP among Eurozone member states. Results show significant and country-dependent contagion and interdependence effects of debt to GDP in the Eurozone.

Bíorretroalimentación de la respuesta galvánica de la piel y entrenamiento en relajación: un estudio piloto
F. Javier Torres Torrija,Xochitl Gallegos
Revista Latinoamericana de Psicología , 1983,
Un glosario términos del análisis experimental de la conducta en el idioma espa ol
Victor A. Colotla,Xochitl Gallegos de Colotla
Revista Latinoamericana de Psicología , 1971,
Bíorretroalimentación de la respuesta galvánica de la piel y entrenamiento en relajación: un estudio piloto
Xochitl Gallegos,F. Javier Torres Torrija
Revista Latinoamericana de Psicología , 1983,
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