http://repositoriodigital.ipn.mx/handle/123456789/793 2026-05-02T07:58:17Z 2026-05-02T07:58:17Z Mendoza-Ramírez, Luis Jiménez-Castañeda, Julio César http://repositoriodigital.ipn.mx/handle/123456789/20947 2019-10-02T18:17:52Z 2015-01-01T00:00:00Z

Title: El éxito de los negocios de subsistencia de artesanía y su relación con el desempeño Authors: Mendoza-Ramírez, Luis; Jiménez-Castañeda, Julio César Abstract: El objetivo de este trabajo fue analizar cómo la definición de éxito de los Emprendedores de subsistencia se relaciona con el desempeño financiero y no financiero de los negocios de artesanías. Siguiendo las cinco tipologías de éxito en negocios de subsistencia (familiares, arriesgados, históricos, nuevos entrantes al mercado y los líderes de la industria) propuestos por Toledo-López et al., (2012) en el contexto de negocios de subsistencia: mercado local, ingresos de subsistencia, falta de acceso a recursos básicos y de apoyo del gobierno y las redes informales, se plantean que (1) la definición de éxito se determina por el desempeño financiero, (2) la definición de éxito se relaciona con las metas y los motivos del emprendedor para iniciar su negocio. Para probar las hipótesis, se hizo un estudio exploratorio y transversal, se entrevistaron a 76 negocios de subsistencia de artesanías en Oaxaca,

2015-01-01T00:00:00Z Cruz-Domínguez, Gricel Rodríguez-Mendoza, María de las Nieves http://repositoriodigital.ipn.mx/handle/123456789/20946 2019-10-02T18:17:27Z 2015-02-14T00:00:00Z

Title: Efecto del bocashi y fertilizantes de liberación lenta en algunas propiedades de suelos con maíz Authors: Cruz-Domínguez, Gricel; Rodríguez-Mendoza, María de las Nieves Abstract: En este estudio se determinó el efecto de la aplicación individual o combinada de composta (bocashi, B) y fertilizantes de liberación lenta (FLL) sobre algunas propiedades de suelos de terraza y valle cultivados con maíz (Zea mays L.) en la región Mixteca del estado de Oaxaca, México. Se utilizó un diseño completamente al azar con 7 tratamientos y 4 repeticiones: control, sin fertilización (C); fertilización convencional

2015-02-14T00:00:00Z del Castillo, Rafael F. Etchevers-Barra, Jorge D. Gutiérrez-Castorena, Ma. del Carmen Baez, Aurelio http://repositoriodigital.ipn.mx/handle/123456789/19914 2019-10-02T18:12:35Z 2012-01-01T00:00:00Z

Title: Selection and interpretationof soil quality indicators for forest recovery after clearing of a tropical montane cloud forest in Mexico Authors: del Castillo, Rafael F.; Etchevers-Barra, Jorge D.; Gutiérrez-Castorena, Ma. del Carmen; Baez, Aurelio Abstract: Through slash-and-burn techniques, vast areas formerly occupied by tropical montane cloud forest (TMCF) in Mexico have been converted into croplands and secondary forest of different ages. Despite the dramatic changes in soil properties and processes detected during cropping and forest regeneration, no attempts have been made to develop soil quality indicators (SQI) to assist in the assessment of soil conditions during such changes. SQI are considered to be essential in evaluating plans of forest restoration or management; as such, the objectives of this study were to (i) select soil properties that can be used as SQI during forest regeneration for abandoned crop fields in a TMCF area managed under the slash-andburn method; and (ii) examine the ecological significance of stand age for function-based interpretations of the selected SQI. To this end, the soil properties of three adjacent chronosequences in El Rincón, Sierra Norte, Southern Mexico were analyzed. Each chronosequence consisted of ordered series of five stands of different age after abandonment: a cornfield and adjacent forests of 15 (incipient forest), 45 (young forest), 75 (mature forest), andP100 (old-growth forest) years after abandonment. The soil properties of undisturbed old-growth forest stands were used as a reference. After inspection of principal component analysis results and control charts, the following soil properties were chosen as SQI in TMCF areas: soil organic carbon, pH, plant-available P, O horizon thickness and exchangeable Al3+. The selected SQI displayed different rates of change during forest regeneration. Soil organic carbon had a fast recovery rate and, therefore, a greater ability to return to its original level after disturbance. In contrast, O horizon thickness, soil pH, plant-available P, and exchangeable Al3+ showed a slow rate of change during the fallow period. SQI did not always change linearly nor improve with the age of the forest. The highest exchangeable Al3+ concentration was detected in 45-year-old forests, suggesting that at this forest age, soil become an important filter against Al3+ sensitive species, potentially affecting vegetation composition. Considering the slow recovery rate of some SQI, we estimate that fallow periods of at least 100 years are required in order to reach good soil quality in TMCF ecosystems. Management practices should therefore consider the maintenance of forest of different ages spanning at least 100 years in the landscape. Doing so would achieve more sustainable management practices by allowing a relatively continuous recovery of the ecosystem without prolonged interruptions of land utilization.

2012-01-01T00:00:00Z Ruiz-Fregozo, M. Vega-Villasante, F. Espinosa-Chaurand, L. D. Cortés-Jacinto, E. García-Guerrero, M. http://repositoriodigital.ipn.mx/handle/123456789/19913 2019-10-02T18:11:04Z 2012-01-01T00:00:00Z

Title: Contributions to the biology of molting and growth of the longarm river prawn macrobrachium tenllum (Decapoda: paleamonidae) in Mexico Authors: Ruiz-Fregozo, M.; Vega-Villasante, F.; Espinosa-Chaurand, L. D.; Cortés-Jacinto, E.; García-Guerrero, M. Abstract: Studies on the molting cycle of Macrobrachium tenellum are not available, which limits the scope of studies of growth and reproduction. The duration of the molt cycle was determined under controlled experimental conditions. The prawns were divided into four groups according to weight: Group 1 (1.0–1.9 g), Group 2 (2.0–2.9 g), Group 3 (3.0–3.9 g), and Group 4 (4.0–9.0 g). The increase in total weight was higher in groups 2 (23.4%) and 3 (20.3%) than in group 1 (~18%) and 4 (~18%). The increase in size after molting among all groups was statistically different: in group 1 it increased 6.1% (highest) and in group 2 it increased 2.2% (lowest). The duration of a complete cycle was 8.9, 9.4, 10.4, and 15.1 days for groups 1, 2, 3, and 4, respectively. The lengths of the molting cycles were not significantly different between groups 1 and 2, but group 4 was different from group 1.

2012-01-01T00:00:00Z