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Search Results: 1 - 10 of 256214 matches for " CARLOS LáZARO-CASTELLANOS "
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Enemigos naturales de escamas armadas (Hemiptera: Diaspididae) en aguacate Hass en Michoacán, México Natural enemies of armored scale (Hemiptera: Diaspididae) on avocado Hass in Michoacan Mexico
CARLOS LáZARO-CASTELLANOS,HéCTOR GONZáLEZ-HERNáNDEZ,J. REFUGIO LOMELI-FLORES,SVETLANA N. MYARTSEVA
Revista Colombiana de Entomología , 2012,
Abstract: Se identificaron enemigos naturales asociados a escamas armadas en aguacate Hass, y el porcentaje de parasitoidismo en ramas y frutos. Los muestreos se realizaron en huertas certificadas para exportación en Michoacán, México. De julio de 2009 a septiembre de 2010 se colectaron quincenalmente escamas armadas y sus entomófagos en cinco huertos, mientras que en nueve se realizaron muestreos bimestrales (mayo a septiembre) para determinar niveles de parasitoidismo. En cada muestreo se contó por especie el total de escamas vivas y parasitadas por estadio. Se identificaron tres especies de escamas armadas Hemiberlesia lataniae, Abgrallaspis aguacate y Hemiberlesia rapax, las cuales infestan hojas, ramas y frutos, que se presentaron en diez, seis y dos huertas, respectivamente. Los entomófagos identificados fueron: Encarsia citrina, presente en diez huertas y la más abundante con 108 especímenes, Encarsia juanae en cuatro huertas, y con 69 especímenes colectados, Plagiomerus nr. diaspidis con cuatro huertas, y 65 especímenes, Signiphora nr. borinquensis con seis huertas y 23 especímenes, Marietta mexicana en una huerta con cinco especímenes, Aphytis sp. presente en una huerta con dos especímenes y Chilocorus cacti en dos huertas con cinco especímenes. El porcentaje de parasitoidismo fue mayor en ramas que en frutos y aumentó en los meses de julio y septiembre de 2010, influenciado posiblemente por mayores temperaturas y humedad relativa. Encarsia citrina es el parasitoide con mejor perspectiva en manejo de escamas armadas debido a que parasita las tres especies de escamas armadas, tiene mayor distribución, abundancia, y está presente la mayor parte del a o. Natural enemies associated to armored scales on avocado Hass, and the percentage of parasitoidism on branches and fruits were recorded. The study was conducted on 14 avocado Hass orchards certified for exportation in the State of Michoacan, Mexico. From July 2009 to September 2010, armored scales and their entomophagous were collected in five orchards biweekly; meanwhile, in nine different orchards, levels of parasitoidism on armored scales were assessed bimonthly (from May to September 2010). The totals of scales species alive and parasitized scales per stage were recorded for each sample. The armored scales Hemiberlesia lataniae, Abgrallaspis aguacatae and Hemiberlesia rapax were found infesting avocado leaves, branches and fruits. These armored scales were collected in ten, six, and two orchards respectively. The entomophagous insects recognized were Encarsia citrina present in 10 orchards and the most a
PRIMER REGISTRO DE SIPHONINUS PHILLYREAE (HEMIPTERA: ALEYRODIDAE) Y SU PARASITOIDE ENCARSIA INARON (HYMENOPTERA: APHELINIDAE) EN MORELOS, MéXICO
S. N. Myartseva,C. Lázaro-Castellanos
Acta zoológica mexicana , 2011,
Abstract: This is the first record of the ash whitefly Siphoninus phillyreae (Haliday, 1835) and its parasitoid Encarsia inaron (Walker, 1839) on Fraxinus sp. in Morelos, Mexico.
IMMIGRANT WOMEN: BODY AND SUBJECTIVITY IN MOTION
Rosa Lázaro-Castellanos,Olga Jubany-Baucells
Ra Ximhai , 2012,
Abstract: The visibility of women in contemporary migration has broken with the course and social representation of the organization and implementation of international migration projects are predominantly male (Pedone, 2008). The growing presence of women has inspired a large number of studies have focused on immigrant women and their relationship to the labor market, changes in social structure and family and gender systems in both societies of origin and the destination. However, the literature takes as a center for immigrant women and their relationship to emotions and body are relatively recent, the most important contributions are found in disciplines such as anthropology or psychology. The transnational perspective little has reflected on the physical and mental health, emotions and subjectivities of women, resulting from their migration experience. From a socio-anthropological point of view of immigrants and bring their own notions of subjectivity related to gender, race or social class, do not always coincide with those in the host country. We suspect that the same applies to perception, practices and experiences on the body and emotions of women.
Traumatismos e inmunidad humoral según índice predictivo TRISS
Alfonso Alfonso,Lázaro Emerio; Rodríguez Acosta,Mireida; Castellanos Puerto,Edelis; Reyes Martínez,Margarita Lázara; Rodríguez Navarro,Darismel; Carabeo Denis,Carlos;
Revista Cubana de Medicina Militar , 2012,
Abstract: introduction: the trauma is recognized as a non-solved epidemic of the current society, in cuba it is a real health problem. objective: to determine the kinetic behavior of the humoral immunity in trauma patients, in general and in those complicated in particular, and to specify exactly the moment of great affection, as well as its relations to survival probability (sp) according the trauma predictive index "injury severity score" (triss). methods: a prospective study was conducted in 70 trauma patients with values of "injury severity score" higher than 8 admitted in the "dr. luis díaz soto" central military hospital over two years, as well as immunity studies over the first 24 hours, at 3 days and at 7 days. the needed statistic tests were applied to assess the study. sample was stratified in three groups: sp< 80 %, between 80 and 95 % and sp>95 %. results: there were infectious complications significantly frequent (47,9 %). the kinetic study of the humoral immunity confirmed a decrease at 72 hours, of c-3 factor of the serum complement, of the ch-50 total hemolytic complement, and of immunoglobulin g and m. also, there was decrease of these components in the patients complicated and in those died after, more marked at 72 hours and intensified at 7 days en these latter. insofar as the survival probability decreased, also decreased the values of the ch-50 total hemolytic complement (p= 0.009), of the immunoglobulin g and m (p= 0.004) and the c-3 factor of serum complement. the deficiency in the humoral response was accompanied of a greater incidence of complicated and deceased patients. conclusions: the traumata are accompanied of humoral immunodepression and it is related to the survival probability according the predictive index-triss.
Traumatismos e inmunidad celular según el índice predictivo TRISS
Alfonso Alfonso,Lázaro Emerio; Rodríguez Acosta,Mireida; Castellanos Puerto,Edelis; Reyes Martínez,Margarita Lázara; Rodríguez Navarro,Darismel; Carabeo Denis,Carlos;
Revista Cubana de Medicina Militar , 2012,
Abstract: introduction: injuries from severe traumata are a constant threat for subject acquiring a particular interest since generally they affect to young and healthy persons in a complete productive ability. objective: to assess the behavior in time of components of the cellular immunity in trauma patients in general, in those underwent complications and in those deceased, ant its relation to survival probability (sp) according the "trauma injury severity score" (triss) predictive index. methods: a prospective study was conducted in 70 trauma patients with "injury severity score" values higher to 8, admitted in the "dr. luis díaz soto" central military hospital over two years. immunity studies were conducted during the first 24 hours, at three days and at 7 days. the statistic methods including main components analysis, agglomerative cluster analysis classification, which stratified the sample according to sp in group sp< 80 %, between 80 and 95 % and sp> 95 %; test of pearson's correlation; logistic regression test, contingence table analysis and diagnostic discrimination, according to the sensitivity, specificity, prevalence concepts and the predictive values of positive and negative tests. results: there were very frequent infectious complications (47.9 %). the kinetic study of the cellular immunity confirmed a decrease at 72 hours of activity of phagocytosis of neutrophiles. it was noted a depression of components in complicated patients and in those after died, more marked at 72 hours and intensified at 7 days in this latter. according to sp reduction, also decreased the lymphocyte t activity (ra: p= 0.04; re: p= 0.02) and the phagocytosis ability of neutrophiles. the deficiency of cellular immune response was accompanied by a great incidence of complicated and deceased patients. conclusions: traumata are accompanied of cellular immunodepression and this is related to sp according to the triss predictive index.
Conquista, control y convicción: el papel de los parlamentos indígenas en México, el Chaco y Norteamérica
Lázaro ávila, Carlos
Revista de Indias , 1999,
Abstract: This article evaluates the role played by the frontier conflicts in the adoption of policies which led to the creation of a diplomatic or consensual ambit. The first frontier conflict to be dealt with is that of Northern Mexico, through which the hasty solutions that had to be adopted for its resolution are studied. However these policies had a deep repercussion in the metropolis and they were applied and modified in later frontier conflicts such as that of the Chaco region, midway between the Austrians' and the Borbons' policies. Finally, I analyze the case of the North American Spanish possessions, where pactism was applied by the Borbons' reform policies which faced the difficult task of preserving their territorial dominions as well as their commercial interests in a complex political context. En este artículo se hace una evaluación del papel que desempe aron los conflictos fronterizos en la toma de una serie de medidas para su resolución y que desembocaron en la adopción de un ámbito de consenso o diplomático. Se parte del primer conflicto fronterizo americano, el norte de México, para ilustrar las aceleradas soluciones que se hubo de adoptar para solventarlo. Sin embargo esas medidas tuvieron una honda repercusión en la metrópoli y se modificaron en fronteras posteriores como el Chaco, a caballo entre la política austríaca y la reformista borbónica. Por último, analizamos el caso de las posesiones espa olas de Norteamérica donde el pactismo se tuvo que aplicar bajo la égida directa del reformismo borbónico que afrontó allí el difícil equilibrio de preservar sus dominios territoriales a la vez que sus intereses comerciales en un contexto político complejo.
Neurofibromatosis tipo 2: La historia de Lidia Neurofibromatosis type 2: Life story of Lidia
Ares Solanes,Conxi Lázaro,Elisabeth Castellanos,Eduard Serra
Index de Enfermería , 2012,
Abstract: La Neurofibromatosis tipo 2 (NF2) es una enfermedad minoritaria hereditaria caracterizada por la presentación progresiva de múltiples tumores, especialmente Schwanomas Vestibulares Bilaterales, a partir de la segunda década de vida. Su tratamiento con cirugía o radioterapia no evita la pérdida de audición. El pronóstico es complicado y los pacientes deben enfrentarse al progresivo deterioro de su calidad de vida. Un estudio cualitativo a través de la historia de vida de nuestra informante clave nos permite explorar y comprender su vivencia, afecta de Neurofibromatosis tipo II (NF2), así como conocer sus necesidades y aprender de sus recursos adaptativos. Neurofibromatosis type 2 (NF2) is a minority hereditary disease characterized by the development of multiple tumours, especially bilateral vestibular schwannomas, in young adults. Treatments with surgery or radiotherapy are performed to delay hearing loss. The prognosis is complicated and patients face the deterioration of their quality of life. A qualitative study through our key subject's life allows us to explore and understand her experience, as a NF2 sufferer, to identify her needs and to learn about her adaptive measures.
Estudio cinético de la termólisis de tetroxanos por espectrofotometría UV
Nelly L. Jorge,Laura C. Leiva,Maria G. Castellanos,Lázaro F. R. Cafferata
Revista de la Sociedad Química de México , 2002,
Abstract: Resumen. El 3,3,6,6-tetrametil-1,2,4,5-tetroxano (ACDP) en solución de metanol presenta un pico de absorbancia a bajas longitudes de onda presentando lecturas estables y cumpliendo la Ley de Lambert Beer a 209 nm, hasta concentraciones del orden de 10 2 M. Se estudió la cinética de descomposición térmica de este diperóxido cíclico en metanol por espectroscopía UV, como metodología alternativa para la determinación de parámetros cinéticos que rigen la reacción de termólisis de este tipo de compuestos. Los constantes de velocidad obtenidas en el intervalo de temperaturas 130,0-166,0 °C, y de concentaciones iniciales de 0,003-0,013 mol / L y los parámetros de activación calculados fueron comparables con los obtenidos en estudios realizados por otra metodología, demostrando la validez del método. La acetona producida en la termólisis no interfiere en la cuantificación de ACDP remanente.
Neurofibromatosis tipo 2: La historia de Lidia
Solanes,Ares; Lázaro,Conxi; Castellanos,Elisabeth; Serra,Eduard; Blanco,Ignacio;
Index de Enfermería , 2012, DOI: 10.4321/S1132-12962012000100017
Abstract: neurofibromatosis type 2 (nf2) is a minority hereditary disease characterized by the development of multiple tumours, especially bilateral vestibular schwannomas, in young adults. treatments with surgery or radiotherapy are performed to delay hearing loss. the prognosis is complicated and patients face the deterioration of their quality of life. a qualitative study through our key subject's life allows us to explore and understand her experience, as a nf2 sufferer, to identify her needs and to learn about her adaptive measures.
Jefas de hogar: cambios en el trabajo y en las relaciones de poder
Lázaro Castellanos, Rosa;Zapata Martelo, Emma;Martínez Corona, Beatriz;
Política y cultura , 2007,
Abstract: this article approaches the changes that take place in the productive and reproductive work and in the power relations when women assume the control in their homes, focusing on two municipalities of guanajuato, mexico. the data suggest changes in the productive and reproductive work and the relations of power caused by the women household head in the social and gender structure.
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