El papel del espacio público en la ciudad de Mérida. El caso de Paseo de Montejo

This is a partial result of an urban profile series of investigations realized in the city of Merida, as part of the Urban Anthropology course. We are interested, in this case, to tour the reader around the conceptual aspects addressed during the course, which allow us to explain the metropolitan phenomenon, especially the in the Paseo de Montejo area. The matter is especially to point out point some issues that concern to all citizens alike (potential empowered actors) and to those who plan the city (architects, engineers, politicians). Reflecting about the way of how we build the city and the way we appropriate the space that belongs to one of the major highways and pedestrians corridors in Mérida means getting closer to the type of comprehension that will guide us to a more inclusive public space playEsto es el resultado parcial de una serie de investigaciones de perfil urbano llevadas a cabo en la ciudad de Mérida como parte del curso de Antropología Urbana. Nos interesa, en este caso, ofrecer al lector un recorrido por las vertientes conceptuales que se abordaron durante el curso y que permiten explicar el fenómeno metropolitano, de manera específica, la zona que corresponde al Paseo de Montejo. Se trata, en especial de señalar algunas cuestiones que atañen por igual a los ciudadanos (potenciales actores del empoderamiento) y a los que planifican la ciudad (arquitectos, ingenieros, políticos). Reflexionar la manera en cómo construimos la ciudad y la manera en que nos apropiamos del espacio en uno de los principales corredores viales y peatonales de Mérida significa acercarnos a la comprensión que nos guíe a una reproducción inclusiva del espacio público

Determinación nutrimental de piña criolla (Ananas comosus L. Merril) en la sub-región de la Chontalpa Tabasco, México

Objective: To know the nutritional status of the pineapple crop (Ananas comosus L. Merril). Design/methodology/approach: The experiment was established in the Ejido La Esperanza of the municipality of Huimanguillo. A sample of soil and foliage (leaf D) of the pineapple crop was taken, of which three repetitions were used at random, taking 15 leaves per repetition. Results: High concentrations of nitrogen (N), potassium (K) and magnesium (Mg) were found. And in relation to phosphorus (P), calcium (Ca), copper (Cu), Zinc (Zn) and boron (B) were low. The optimum iron (Fe) and medium manganese (Mn) contents in the plant tissue. Limitations of the study/implications: The important limitation of this study is that the irrigation conditions were not included. Findings / Conclusions: It was found that the soil is strongly acid and has problems of excess iron and that the concentrations of the macronutrients in the plant tissue and the micronutrients in the plant tissue are not directly related to the contents of some elements in the soil. It is necessary to make a study on the needs of each element in each of the phenological stages of the Creole pineapple crop. Although the foliar analysis gives a vision for the sustainable management of crop nutrition.Objetivo: Conocer el estado nutrimental del cultivo de piña (Ananas comosus L. Merril). Diseño/metodología/aproximación: El experimento se estableció en el Ejido La Esperanza de Huimanguillo, Tabasco, México. Se tomó una muestra de suelo y del follaje (hoja D) del cultivo de piña, de las cuales se utilizaron tres repeticiones al azar, tomando 15 hojas por repetición. Resultados: Se encontraron concentraciones altas de nitrógeno (N), potasio (K) y magnesio (Mg). Y con relación al fósforo (P), calcio (Ca), cobre (Cu), Zinc (Zn) y boro (B) estuvieron bajos. Los contenidos de fierro (Fe) óptimos y medios para manganeso (Mn) en el tejido vegetal. Limitaciones del estudio/implicaciones: La limitación importante de este estudio es que no se contó con riego. Hallazgos/conclusiones: El suelo es fuertemente ácido y tiene problemas de exceso de fierro y las concentraciones de los macronutrientes en el tejido vegetal y los micronutrientes no están relacionadas directamente con los contenidos de algunos elementos en el suelo. Es necesario hacer un estudio sobre las necesidades de cada elemento en cada una de las etapas fenológicas del cultivo de piña criolla. Aunque el análisis foliar da una visión para el manejo sostenible de la nutrición del cultivo

Associated Factors to Seroprevalence of Ehrlichia

The objective of this study was to determine the seroprevalence to Ehrlichia spp. in dogs from Xcalak, Quintana Roo, Mexico, and the associated factors. Serum samples were obtained from 118 dogs and used in an indirect immunofluorescent assay test for the detection of antibodies against Ehrlichia spp. A questionnaire was used to obtain information about possible variables associated with seroprevalence. These variables were analyzed through Chi2 test and logistic regression. Dog seroprevalence of antibodies against Ehrlichia spp. was 64% (75/118). Fifty-two percent (61/118) of dogs had tick infestation which was identified as Rhipicephalus sanguineus sensu lato. Anemia was observed in 36% of dogs. Leucopenia (2.5%), thrombocytopenia (70%), and hemorrhage (14%) were also observed. Thirty-one percent (23/75) of dogs with anemia, 4% (3/75) of dogs with leucopenia, 80% (60/75) of dogs with thrombocytopenia, 17% (13/75) of dogs with hemorrhages, and 59% (44/75) of dogs with ticks were positive for Ehrlichia spp. antibodies. The factors associated with seroprevalence were age (1–3 and >3 years old, OR = 7.77 and OR = 15.39, resp.), tick infestation (OR = 3.13), and thrombocytopenia (OR = 3.36). In conclusion, seroprevalence of Ehrlichia spp. was high in the community of Xcalak and its associated factors were age, tick infestation, and thrombocytopenia

Ciencia Odontológica 2.0

Libro que muestra avances de la Investigación Odontológica en MéxicoEs para los integrantes de la Red de Investigación en Estomatología (RIE) una enorme alegría presentar el segundo de una serie de 6 libros sobre casos clínicos, revisiones de la literatura e investigaciones. La RIE está integrada por cuerpos académicos de la UAEH, UAEM, UAC y UdeG

Mis casos clínicos de especialidades odontológicas

Libro que muestra la atención de casos clínicos particulares referente a las diferentes especialidades odontológicasLibro que muestra la atención de casos clínicos particulares referente a las diferentes especialidades odontológicasUniversidad Autónoma de Campeche Universidad Autónoma del Estado de Hidalgo Universidad Autónoma del Estado de Méxic

El papel del espacio público en la ciudad de Mérida. El caso de Paseo de Montejo

This is a partial result of an urban profile series of investigations realized in the city of Merida, as part of the Urban Anthropology course. We are interested, in this case, to tour the reader around the conceptual aspects addressed during the course, which allow us to explain the metropolitan phenomenon, especially the in the Paseo de Montejo area. The matter is especially to point out point some issues that concern to all citizens alike (potential empowered actors) and to those who plan the city (architects, engineers, politicians). Reflecting about the way of how we build the city and the way we appropriate the space that belongs to one of the major highways and pedestrians corridors in Mérida means getting closer to the type of comprehension that will guide us to a more inclusive public space play.Esto es el resultado parcial de una serie de investigaciones de perfil urbano llevadas a cabo en la ciudad de Mérida como parte del curso de Antropología Urbana. Nos interesa, en este caso, ofrecer al lector un recorrido por las vertientes conceptuales que se abordaron durante el curso y que permiten explicar el fenómeno metropolitano, de manera específica, la zona que corresponde al Paseo de Montejo. Se trata, en especial de señalar algunas cuestiones que atañen por igual a los ciudadanos (potenciales actores del empoderamiento) y a los que planifican la ciudad (arquitectos, ingenieros, políticos). Reflexionar la manera en cómo construimos la ciudad y la manera en que nos apropiamos del espacio en uno de los principales corredores viales y peatonales de Mérida significa acercarnos a la comprensión que nos guíe a una reproducción inclusiva del espacio público

INTRUSIÓN DE MOLARES SUPERIORESCON ORTO-IMPLANTES. EVALUACIÓN DEL NIVEL DE ADHERENCIA GINGIVAL Y REMODELADO ÓSEO.

The purpose of this study was to evaluate changes in the gingival attachment level and the alveolar bone remodeling in over-erupted upper molars intruded with orthodontic mini-implants. Six subjects were selected for the study. Two mini-implants were placed and a 150-Newtons force was applied. The gingival probing results, simplified oral hygiene index, papillary bleeding index, and parallel periapical radiographs taken at the beginning (T1) with those taken at the end (T2) of treatment were compared. The amount of intrusion, gingival attachment level, plaque control, root resorption, and remodeling of the alveolar bone crest and maxillary sinus floor were compared. The length of intrusion, gingival attaching level, plaque control, root resorption and alveolar bone crest as well as maxillary sinus floor were measured. The average of intrusion obtained was 2.41+/-0.64 mm. over a mean period of 8.67+/-2.94 months. There were no statistically significant differences between initial and final measures for gingival attachment level, root resorption, and remodeling of the alveolar bone crest. It was concluded that molar intrusion therapy with orthodontic mini-implants is an efficient procedure that produces no adverse effects on gingival health, allows remodeling of the alveolar bone crest and the maxillary sinus floor, without resorption on the molar roots.El objetivo de este estudio fue evaluar los cambios en el nivel de adherencia gingival y el remodelado del hueso alveolar en molares superiores intruidos con orto-implantes. Seis pacientes se incluyeron incluidos en el estudio. Se colocaron dos orto-implantes y se aplicó una fuerza intrusiva de 150 Newtons. Se compararon los resultados del sondaje, índice de higiene oral simplificado, índice de sangrado papilar y radiografías periapicales tomadas al inicio (T1) y al final del tratamiento (T2). Se midió la cantidad de intrusión, el nivel de adherencia gingival, control de placa, reabsorción radicular y el remodelado de la cresta alveolar así como del piso de seno maxilar. El promedio de intrusión obtenido fue de 2.41+/-0.64 mm en un promedio de 8.67+/-2.94 meses. No hubo diferencia estadísticamente significativa entre los valores inicial y final de nivel de encía adherida, reabsorción radicular y remodelado de la cresta alveolar. En conclusión se encontró que la terapia de intrusión de molares con orto-implantes ortodónticos es un procedimiento eficaz que no produce efectos adversos en la salud gingival, permite el remodelado de la cresta alveolar y del piso del seno maxilar, sin reabsorber las raíces de los molares

Ecophysiology and nutrition of cabezona pineapple (Ananas comosus L. Merril) in Chontalpa, Tabasco, Mexico: Creole pineapple nutrition (Ananas comosus L. Merril)

Objective: To improve the nutrition of the pineapple crop. Design / Methodology / Approach: The applied fertilization doses were those obtained through the Integrated System to Recommend Fertilizer Dose for pineapple (SIRDF), which were: N (230kg - P (183kg) - K (300kg) and N ( 253kg) - P (138kg) - K (360kg), Corresponding to the Cutaneous Acrisol (Endoarcilic, Hyperdystric, Ferric) soil subunits (ACct (ncehdfr)) and to the Cutaneous Acrisol (Endoarcilic, Ferric) (ACct (ncefr)), which were compared with the control dose (producer): N (85kg), P (85kg) and K (85kg). Results: It was found that in the soil ACct (ncehdfr) the dose of SIRDF; the height of fruit without crown (cm), weight of the whole fruit (kg), weight of the fruit without crown (kg), and brix degrees were high compared to the control, not so, for crown weight (kg) which was more high in the dose applied by the producer. As for the soil ACct (ncefr); plant height (cm), fruit height with crown (cm), crown height (cm), fruit circumference (cm), whole fruit weight (kg), fruit weight without crown (kg) and brix degrees were higher in the dose applied through the SIRDF, on the contrary, the weight of the crown (kg) was greater in the control. Limitations of the study / implications: The quality of the loggerhead pineapple plant materials, agronomic management and the attack of mealybugs affect the observations of yield and quality of the fruit. Findings / conclusions: The fruits produced with the SIRDF doses presented lower Brix degrees than those of the smooth Cayenne and MD cultivars. It can produce between 56 and 58 tha-1 of fresh fruit. This study shows that the doses of fertilizers obtained by SIRDF show positive results to improve the production of Creole pineapple in Tabasco.Objective: To improve the nutrition of the pineapple (Ananas comosus) cultivation using fertilizers. Design/Methodology/Approach: The Sistema Integrado para Recomendar Dosis de Fertilizantes (SIRDF) established the fertilization doses for pineapple in the Cutanic Acrisol (Endoclayic, Hyperdystric, Ferric) (ACct(ncehdfr)) —N(230kg)-P(183kg)-K(300kg)— and Cutanic Acrisol (Endoclayic, Ferric) (ACct(ncefr)) —N(253kg)-P(138kg)-K(360kg)— soil sub-units. The SIRDF doses were compared with the control dose (producer): N(85kg), P(85kg), and K(85kg). Results: The fruits harvested from the ACct(ncehdfr) soil to which the SIRDF dose was applied were larger (cm, without the crown), heavier (kg, with and without the crown), and also had higher °Brix values compared with control. This was not the case for the crown, which was heavier when the producer dose was applied. Meanwhile, the produce harvested from the ACct(ncefr) soil to which the SIRDF dose was applied included taller plants (cm), larger fruits (cm, with crown), larger crowns (cm), wider fruits (cm, circumference), heavier fruits (kg, with and without crown), and higher °Brix values; on the contrary, the crowns were heavier (kg) in control. Study Limitations/Implications: Yield and fruit quality observations are affected by the quality of the Cabezona pineapple vegetable materials, agronomic management, and the attack of citrus mealybugs. Findings/Conclusions: The fruits produced using the SIRDF doses had lower °Brix than the Cayena Lisa and MD pineapples. A 56-58 t ha-1 volume of fruit can be produced. This study proves that the doses established by the SIRDF had positive results for the improvement of the Cabezona pineapple production in Tabasco, Mexico

Parasitic Zoonoses in Humans and Their Dogs from a Rural Community of Tropical Mexico

A cross-sectional study was made on 89 inhabitants and their dogs from a rural community of Yucatan, Mexico, to determine the serological prevalence of some zoonotic parasitic agents. Samples were taken to monitor the presence and intensity of infection with gastrointestinal parasites in dogs. In humans, the serological prevalence of T. canis, T. gondii, and T. spiralis was 29.2%, 91.0%, and 6.7%, respectively. No associations were found between positive cases and studied variables. From the total of blood samples taken from dogs, 87 (97.6%) were seropositive to T. gondii; only 52 viable fecal samples were collected from dogs of which 46.2% had the presence of gastrointestinal parasites with low to moderate intensity; from those, 12% had the presence of T. canis. This study demonstrates the presence of the studied zoonotic agents in the area particularly T. gondii which suggest a common source of infection in dogs and humans and a high number of oocyts present in the environment. Preventive measures must be designed towards good prophylactic practices in domestic and backyard animals (T. canis and T. spiralis). Contaminated sources with T. gondii (food and water) should be further investigated in order to design effective control measures