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Search Results: 1 - 10 of 672024 matches for " María Félix;García-Pérez "
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Biocontrol de la pudrición de raíz de nochebuena de interior con Trichoderma spp. Root rot biocontrol for indoor poinsettia with Trichoderma spp.
Felipe de Jesús Osuna-Canizalez,María Félix Moreno-López,Faustino García-Pérez,Sergio Ramírez-Rojas
Revista mexicana de ciencias agrícolas , 2012,
Abstract: En Morelos, la pudrición de la raíz causada por Fusarium spp., es una de las principales enfermedades de la nochebuena de interior. Por su efecto devastador, en su prevención o control se realizan aplicaciones frecuentes de productos químicos, con los riesgos inherentes a la salud humana y al ambiente. En la búsqueda de alternativas bioracionales al manejo de esta enfermedad, se realizó un ensayo en el que se evaluaron tres cepas comerciales de Trichoderma spp., en tres diferentes sustratos: S1= "tierra de hoja" (70% v/v)+tezontle grueso (15% v/v)+tezontle fino (10% v/v)+agrolita (5% v/v); S2= turba (80% v/v)+ fibra de coco (20% v/v); S3= "tierra de hoja" (70%) + "tepojal" (30%), en las variedades comerciales más comunes, Freedom Red y Prestige Red. Se utilizó un dise o factorial de tratamientos 4 x 3 x 2 y los tratamientos resultantes se evaluaron en un dise o completamente al azar con seis repeticiones. Respecto a la incidencia de pudrición de la raíz, las cepas comerciales de Trichoderma spp., no mostraron diferencias entre sí ni con el testigo químico. La pudrición de la raíz estuvo asociada con S2, debido a una baja capacidad de aireación, y sólo se presentó en Prestige Red. La población (UFC g-1) de Trichoderma spp., en el sustrato al término del ciclo, fue igual (p< 0.05) entre cepas comerciales y entre estas y el testigo químico (sin inoculación), debido a la presencia de cepas nativas de Trichoderma en los componentes orgánicos de los sustratos ("tierra de hoja", turba y fibra de coco). In Morelos, root rot caused by Fusarium spp., is one of the main diseases of indoor poinsettia. In order to prevent or control its devastating effect, frequent applications of chemical products are performed, with inherent risks to human health and environment. In quest for alternative biorational options, an essay in which three commercial strains of Trichoderma spp., was done, in three different substrates: S1= "organic soil" (70% v/v)+thick tezontle (15% v/v)+thin tezontle (10% v/v)+agrolita (5% v/v); S2= peat moss (80% v/v)+ coconut fiber (20% v/v); S3= "organic soil" (70%)+"tepojal" (30%), in most common commercial varieties, Freedom Red and Prestige Red. A factorial design of 4 x 3 x 2 treatment was used and resulting treatments were evaluated in a completely random design with six repetitions. Regards root rot incidence, commercial strains of Trichoderma spp., did not show differences between them, either with chemical control. Root rot was associated with S2, due low aeration capacity, and only it was seen in Prestige Red. Population of Trichoderma spp.,
Biocontrol de la pudrición de raíz de nochebuena de interior con Trichoderma spp.
Osuna-Canizalez, Felipe de Jesús;Moreno-López, María Félix;García-Pérez, Faustino;Ramírez-Rojas, Sergio;Canul-Ku, Jaime;
Revista mexicana de ciencias agrícolas , 2012,
Abstract: in morelos, root rot caused by fusarium spp., is one of the main diseases of indoor poinsettia. in order to prevent or control its devastating effect, frequent applications of chemical products are performed, with inherent risks to human health and environment. in quest for alternative biorational options, an essay in which three commercial strains of trichoderma spp., was done, in three different substrates: s1= "organic soil" (70% v/v)+thick tezontle (15% v/v)+thin tezontle (10% v/v)+agrolita (5% v/v); s2= peat moss (80% v/v)+ coconut fiber (20% v/v); s3= "organic soil" (70%)+"tepojal" (30%), in most common commercial varieties, freedom red and prestige red. a factorial design of 4 x 3 x 2 treatment was used and resulting treatments were evaluated in a completely random design with six repetitions. regards root rot incidence, commercial strains of trichoderma spp., did not show differences between them, either with chemical control. root rot was associated with s2, due low aeration capacity, and only it was seen in prestige red. population of trichoderma spp.,(ufc g-1) in the substrate at end of cycle was the same (p< 0.05) between commercial strains and between them and the control (without inoculation), due presence of native strains of trichoderma in organic components of substrates ("organic soil", peat moss and coconut fiber).
Should we adjust erythropoiesis-stimulating agent dosage to postdialysis hemoglobin levels? A pilot study
Nieves Del Castillo, Patricia García-García, Antonio Rivero, Alejandro Jiménez-Sosa, Manuel Macía, María Adela Getino, María Luisa Méndez, Javier García-Pérez, Juan F Navarro-González
BMC Nephrology , 2012, DOI: 10.1186/1471-2369-13-60
Abstract: Cohort study including 67 stable hemodialysis patients. Pre- and post-dialysis Hb concentrations were measured, and ESA doses were calculated. A model to predict post-dialysis Hb is proposed. During 18?months follow-up, CVE, hospitalizations and mortality were collected.After dialysis, Hb cocentration rise by 6.1?±?5.6%. Using postdialysis Hb, the weight-adjusted ESA dosage would be lower respect to the prescription using predialysis Hb: 104?±?120 vs 128?±?124 U/kg/week (P?<?0.001). Using predialysis Hb, 40.2% of subjects had a Hb level above 12?g/dL, whereas this percent increased to 70.1% using postdialysis Hb. During the follow-up, 15 patients had a CVE, without differences in Hb levels respect to subjects without CVE. However, patients with CVE had received higher ESA doses: 186?±?180 vs 111?±?98 U/Kg/week (P?=?0.001). The prediction model is: Postdialysis Hb (g/dL)?=?1.636?+?0.871 x predialysis Hb* (g/dL)?+?0.099 x UF rate** (mL/kg/h) - 0.39 for women***. [R2?=?0.74; *P?<?0,001; **P?=?0.001; ***P?=?0.03).Postdialysis Hb can be a better reflect of the real Hb level in hemodialysis patients. Using postdialysis Hb would avoid the use of inappropriately high ESA doses. The prediction of postdialysis Hb with an adjusted model would help us to identify those patients at risk for ESA overdosification.
Molecular method for the characterization of Coxiella burnetii from clinical and environmental samples: variability of genotypes in Spain
Isabel Jado, Cristina Carranza-Rodríguez, Jesús Félix Barandika, álvaro Toledo, Cristina García-Amil, Beatriz Serrano, Margarita Bola?os, Horacio Gil, Raquel Escudero, Ana L. García-Pérez, A. Sonia Olmeda, Ianire Astobiza, Bruno Lobo, Manuela Rodríguez-Vargas, José Luis Pérez-Arellano, Fernando López-Gatius, Francisco Pascual-Velasco, Gustavo Cilla, Noé F. Rodríguez, Pedro Anda
BMC Microbiology , 2012, DOI: 10.1186/1471-2180-12-91
Abstract: To assess the variability of this organism in Spain, we have developed a novel method that consists of a multiplex (8 targets) PCR and hybridization with specific probes that reproduce the previous classification of this organism into 8 genomic groups, and up to 16 genotypes. It allows for a direct characterization from clinical and environmental samples in a single run, which will help in the study of the different genotypes circulating in wild and domestic cycles as well as from sporadic human cases and outbreaks. The method has been validated with reference isolates. A high variability of C. burnetii has been found in Spain among 90 samples tested, detecting 10 different genotypes, being those adaA negative associated with acute Q fever cases presenting as fever of intermediate duration with liver involvement and with chronic cases. Genotypes infecting humans are also found in sheep, goats, rats, wild boar and ticks, and the only genotype found in cattle has never been found among our clinical samples.This newly developed methodology has permitted to demonstrate that C. burnetii is highly variable in Spain. With the data presented here, cattle seem not to participate in the transmission of C. burnetii to humans in the samples studied, while sheep, goats, wild boar, rats and ticks share genotypes with the human population.
A Matching Model on the Use of Immigrant Social Networks and Referral Hiring  [PDF]
Mónica García-Pérez
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.24070
Abstract: Using a simple search model, with urn-ball derived matching function, this paper investigates the effect of firm owner’s and coworkers’ nativity on hiring patterns and wages. In the model, social networks reduce search frictions and wages are derived endogenously as a function of the efficiency of the social ties of current employees. As a result, individuals with more efficient connections tend to receive higher wages and lower unemployment rate. However, because this efficiency depends on matching with same-type owners and coworkers, there is also a differential effect among workers’ wages in the same firm. This analysis highlights the potential importance of social connections and social capital for understanding employment opportunities and wage differentials between these groups.
Números cromosomáticos de plantas occidentales, 809-817
Penas Merino, ángel,Puente García, Emilio,López Pacheco, María José,García-Pérez, Liselotte
Anales del Jardín Botánico de Madrid , 1999,
Abstract:
Control metabólico en el paciente con diabetes mellitus tipo 2 en el municipio de Centla, Tabasco, México
María I. ávalos-García,Carlos Mario de la Cruz-Gallardo,Carlos Tirado-Hernández,Cruz García-Pérez
Salud en Tabasco , 2007,
Abstract: Objetivo. Determinar el control metabólico y factores asociados en el paciente con diabetes mellitus tipo 2. Material y métodos. Se realizó un estudio observacional, analítico, transversal. La muestra fue de 131 pacientes. Las variables estudiadas fueron sociodemográficas, clínicas-diagnósticas y de control y seguimiento. La variable dependiente fue caso en control definida según la NOM 015. Se obtuvo información a través de la evaluación de documentos, guía de auditoria médica y de la aplicación de cuestionario. Se utilizó estadística descriptiva y analítica a través de la prueba de Chi2 de Pearson y razones de prevalencia. Los resultados se expresaron en tablas y gráficos. Se utilizó el programa Excel y el software estadístico Stata Intercooled 7.0. Resultados. En el perfil epidemiológico, las cifras más representativas como prevalencia lápsica, tasas de morbilidad, mortalidad y letalidad se incrementaron de manera importante. Del total de la muestra fueron mujeres 61.07%, la media de edad 54.5 a os, con estudios de primaria 81.68%, religión católica 60.31%. Factores de riesgo: Obesidad 39.69% y sobrepeso 21.37%, dieta inadecuada 94.66%, sin ejercicio físico 83.97%. Los Pacientes controlados fueron 23.66%. La razón de prevalencia más significativa se observó en pacientes detectados en centros de salud y la mayor probabilidad de complicarse en pacientes que no tomaron el medicamento, sin dieta adecuada y sin ejercicio. Conclusión. Los resultados de este estudio demuestran la necesidad de implementar estrategias que permitan mejorar la atención médica, elevar la calidad de vida de los pacientes diabéticos, optimizar el uso de recursos y disminuir el costo de la enfermedad.
Comportamiento productivo de cerdos mestizos en ceba alimentados con follaje fresco de Morus alba como sustituto parcial del concentrado comercial
Contino Esquijerosa,Yuván; Ojeda García,Félix; Herrera González,Rafael; Altunaga Pérez,Nancy; Pérez Rubalcaba,María G;
Zootecnia Tropical , 2008,
Abstract: the forage use in the feeding of the pigs brings nutritional and physiological advantages that favour pig behaviour. from these antecedents, the objective of this investigation consisted of evaluating the productive response of racially mixed pigs in the stage of fattening, when used fresh morera, morus alba, foliage as partial substitute of the commercial concentrated. the investigations took place in the eepf ?indio hatuey ?. the gains of live weight of pigs in growth were evaluated from 30 to 90 kg. weighting was made every 14 days, with the determination of the live weight, daily weight gain, and the feed conversion. the groups initiated and finished the stages of evaluation with very close weights (63.02 vs. 60.59 kg) and the difference in the total increase of live weight during the fatten stage was small (2.43 kg/pig). the weight gain average in both groups (treatment and control) was similar, with a tendency to the superiority of the group that consumed only concentrated. the value in the control group was 636 g/anim/d, while in the experimental group was 623 g/anim/d, with a non significant difference between groups. pigs that consumed only concentrated, the conversion index was low with value of 1.71, and in the experimental group was of 1.94. the inclusion of morera foliage in the diets improved the performance of the productive indicators of mixed pigs in fattening stage.
Intraabdominal hemophilic pseudotumor: case report Pseudotumor hemofílico intraabdominal: A propósito de un caso
R. García-Pérez,G. Torres-Salmerón,F. Sánchez-Bueno,A. García-López
Revista Espa?ola de Enfermedades Digestivas , 2010,
Abstract:
MARIPOSAS PIERIDAE (LEPIDOPTERA: PAPILIONOIDEA) DE LA CUENCA DEL RíO COELLO (TOLIMA), COLOMBIA
Ospina-López,Leonardo A.; García-Pérez,Jack F.; Villa-Navarro,Francisco A.; Reinoso-Flórez,Gladys;
Actualidades Biológicas , 2010,
Abstract: this study analyzed the composition, richness, diversity, and structure of pieridae butterflies in the coello river basin (tolima), colombia, located in the central mountain chain of the colombian andes. 11 sampling stations were established, ranging in altitude from 433 to 3600 m. samples were collected in march and october 2003 using three different habitats for sampling (meadow, edge, and forest). collections were made from 08:00 to 16:00 h in variable length transects, using entomological nets. data analyses for determining community structure included calculation of relative abundance percentage for subfamilies and species, richness (ice, chao1, jack2, and bootstrap), rarefaction curve estimation and diversity valued by sampling unit. 42 butterfly species in this study exhibited a wide altitudinal distribution along the established gradient. the estimators pointed out the 44 samples were insufficient, thus demonstrating the need for increased sampling. the community fit a log-series distribution and it was apparent that the highest richness and diversity was affected by the dry season and existed in zones located below 2.000 m.
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