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781
Desarrollo histórico de la educación a distancia
Publicado 2009“…En este artículo se describe la evolución de la educación a distancia desde un punto de vista general, abordando los aspectos que se consideraron más relevantes. …”
Enlace del recurso
Artículo -
782
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783
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784
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785
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786
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787
Comportamiento de un fulvato de calcio en dos especies (Lilium nashville y Lilium pollyanna) en la calidad de flor de corte.
Publicado 2017“…First experiment was made at Universidad Autónoma Agraria Antonio Narro (UAAAN) culturing the specie Lilium nashville and evaluating the performance of the diameter and length of the stem, the number of flower buds, and the length of bud flowers against each treatment and obtain the correlation between the calcium content; also the concentration of calcium, magnesium and iron for each container was measure with the help of an atomic absorption spectrophotometer VARIAN Spectr AA-5 per determinate the match between the elements when were absorbed by the plant. Second experiment was made at Facultad de Ciencias Forestales, belong to the Universidad Autónoma de Nuevo León (UANL), the specie cultured was Lilium pollyanna, as well as the before experiment were measured the length and depth of the stem, the the number of flower buds, and the length of bud flowers; were taken samples of vegetal tissue of each treatment to obtain the contents of calcium, magnesium and iron and compare them with the before experiment; also were counted the days during the exposition shelf to analyze the differences of the treatments and witness. …”
Enlace del recurso
Tesis -
788
Distribución de especies de plantas nativas y exóticas al lado de caminos a lo largo de un gradiente altitudinal en el noreste de México.
Publicado 2018“…In the particular case of exotic plants, the variables that most influence its distribution are altitude, % clay and% silt.…”
Enlace del recurso
Tesis -
789
Comportamiento de un fulvato de calcio en dos especies (Lilium nashville y Lilium pollyanna) en la calidad de flor de corte.
Publicado 2017“…First experiment was made at Universidad Autónoma Agraria Antonio Narro (UAAAN) culturing the specie Lilium nashville and evaluating the performance of the diameter and length of the stem, the number of flower buds, and the length of bud flowers against each treatment and obtain the correlation between the calcium content; also the concentration of calcium, magnesium and iron for each container was measure with the help of an atomic absorption spectrophotometer VARIAN Spectr AA-5 per determinate the match between the elements when were absorbed by the plant. Second experiment was made at Facultad de Ciencias Forestales, belong to the Universidad Autónoma de Nuevo León (UANL), the specie cultured was Lilium pollyanna, as well as the before experiment were measured the length and depth of the stem, the the number of flower buds, and the length of bud flowers; were taken samples of vegetal tissue of each treatment to obtain the contents of calcium, magnesium and iron and compare them with the before experiment; also were counted the days during the exposition shelf to analyze the differences of the treatments and witness. …”
Enlace del recurso
Tesis -
790
Distribución de especies de plantas nativas y exóticas al lado de caminos a lo largo de un gradiente altitudinal en el noreste de México.
Publicado 2018“…In the particular case of exotic plants, the variables that most influence its distribution are altitude, % clay and% silt.…”
Enlace del recurso
Tesis -
791
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792
Efectos del tipo de cambio en el resultado de empresas mexicanas. (effect of the exchange rate on mexican companies' net results)
Publicado 2014“…Este trabajo presenta un análisis en el efecto que tiene la devaluación del peso ante el fortalecimiento del dólar durante el 2014 y como generará impacto financiero positivo en el caso de algunas compañías multinacionales en las que sus ingresos sean mayoritariamente en dólares. …”
Enlace del recurso
Artículo -
793
Germinación, facilitación y competencia entre plantas del noreste de México y su relación con la filogenia.
Publicado 2018“…In the present investigation, we tested whether individuals of phylogenetically distant species are closer than the phylogenetically closest ones, in Microphyllus Desert Scrubland, Pine-Oak Forests and Tamaulipan Thornscrub in northeastern Mexico. …”
Enlace del recurso
Tesis -
794
Germinación, facilitación y competencia entre plantas del noreste de México y su relación con la filogenia.
Publicado 2018“…In the present investigation, we tested whether individuals of phylogenetically distant species are closer than the phylogenetically closest ones, in Microphyllus Desert Scrubland, Pine-Oak Forests and Tamaulipan Thornscrub in northeastern Mexico. …”
Enlace del recurso
Tesis -
795
Evaluation of a community-based trapping program to collect simulium ochraceum sensu lato for verification of onchocerciasis elimination
Publicado 2014“…None of the flies collected were found to contain parasite DNA when tested by a polymerase chain reaction assay targeting a parasite specific sequence, resulting in a point estimate of infection in the vectors of zero, with an upper bound of the 95% confidence interval 0.13 per 2,000. …”
Enlace del recurso
Artículo -
796
Prevalence of sensorineural hearing loss in children and adolescents with diabetes mellitus
Publicado 2015“…Values of glycated hemoglobin (HbA1c) were assessed and Tonal audiometry and Speech audiometry tests were performed. Results: A total of 84 patients with a diagnosis of T1DM were studied, out of which 12 (14.3%) presented SNHL. …”
Enlace del recurso
Artículo -
797
Randomized clinical trial to evaluate the effect of fecal microbiota transplant for initial Clostridium difficile infection in intestinal microbiome
Publicado 2017“…CDI resolution was considered when there was a reduction on the Bristol scale of at least 2 points, a reduction of at least 50% in the number of bowel movements, absence of fever, and resolution of abdominal pain (at least two criteria). …”
Enlace del recurso
Artículo -
798
Molecular assessment of the fecal microbiota in healthy cats and dogs before and during supplementation with fructo-oligosaccharides (FOS) and inulin using high-throughput 454-pyro...
Publicado 2017“…Fecal samples were collected at two time points before and at two time points during prebiotic administration. …”
Enlace del recurso
Artículo -
799
Molecular assessment of the fecal microbiota in healthy cats and dogs before and during supplementation with fructo-oligosaccharides (FOS) and inulin using high-throughput 454-pyro...
Publicado 2017“…Fecal samples were collected at two time points before and at two time points during prebioticadministration. …”
Enlace del recurso
Artículo -
800
Impulsando la Sostenibilidad: Factores Clave en la Industria Automotriz Mexicana
Publicado 2025Enlace del recurso
Artículo