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Morphological and Molecular Characterization of Moniliophthora roreri Causal Agent of Frosty Pod Rot of Cocoa Tree in Tabasco, Mexico
J.A. Cuervo-Parra,V. Sanchez-Lopez,M. Ramirez-Suero,M. Ramirez-Lepe
Plant Pathology Journal , 2011,
Abstract: Cocoa farming is affected by many fungal diseases and frosty pod rot is one of the biggest constraints of cocoa cultivation in Latin America cocoa growing countries. Three Moniliophthora roreri strains have been isolated from frosty pod rot diseased cocoa tree (Theobroma cacao) in Tabasco, Mexico. The strains were identified by morphological analysis and by sequencing the internal transcribed spacers 1 and 2. The microscopic and macroscopic morphological characteristics observed are similar to those reported in the literature for those species. The phylogenetic analysis of the M. roreri sequences formed three groups supported by high bootstrap values and the sequences of the isolates clustered close to the sequences of strains previously isolated from T. cacao in Peru and Mexico. The alignment of ITS1-5.8s-ITS2 sequences of M. roreri strains revealed for ITS1 and ITS2 four regions with interspecies divergence (80, 84-91, 110 and 130) and six (395, 444, 459, 539, 570 and 585), respectively. In conclusion, the identification of M. roreri cocoa strains by ITSs sequences confirmed the identification by morphological methods and provides information on the variability in comparison with M. roreri strains of South and Central America. Besides this, the identification could be important for developing strategies for its prevention and control.
Antifungal activity of vanilla juice and vanillin against Alternaria alternata
Guadalupe Del Carmen Rodríguez-Jimenes,Jaime Alioscha Cuervo-Parra,José Esteban Aparicio Burgos,Pablo Antonio López Pérez,Teresa Romero-Cortes,Víctor Hugo Pérez Espa？a,Víctor J. Robles-Olvera
- , 2019, DOI: https://doi.org/10.1080/19476337.2019.1586776
Abstract: ABSTRACT Vanilla juice has been shown empirically to have antifungal activity against some fungal strains; however, there are no activity reported against Alternaria genre. In this work, the chemical profile of vanilla juice was obtained and its antifungal activity against fungal strains from the family Pleosporaceae, isolated from sorghum- and barley-diseased plants, was tested. The strains were identified as Alternaria alternata by their molecular and morphological characteristics. The vanilla juice characterization from Vanilla planifolia pods showed the presence of vanillin, vanillic acid, p-hydroxybenzaldehyde, p-hydroxybenzoic acid, guaiacol, glucovanillin, vanillyl alcohol, and furfural. Vanilla juice showed a fungistatic effect against all A. alternata strains tested in this study and increased the lag time from 50 to 112 h, and no conidia were produced. This result indicates the possible application of vanilla juice as an alternative to control agricultural crops such as barley and sorghum in Mexico
Computation of crack tip elastic stress intensity factor in mode I by in-plane electronic speckle pattern interferometry
Parra-Michel, J.;Martínez, A.;Rayas, J.A.;
Revista mexicana de física , 2010,
Abstract: in this work, a dual illumination beam system is used to obtain the stress intensity factor in modes one (mode i) to mechanical elements during tension testing. the displacement field is obtained by means of electronic speckle pattern interferometry and phase stepping technique. deformations are calculated by the stokes differentiation method. results are compared with a numerical simulation using a finite element analysis technique.
Computation of crack tip elastic stress intensity factor in mode I by in-plane electronic speckle pattern interferometry
J. Parra-Michel,A. Martínez,J.A. Rayas
Revista mexicana de física , 2010,
Abstract: En este trabajo un sistema de iluminación dual es utilizado para la obtención del factor de concentración de esfuerzos en el primer modo (modo I) en un elemento mecánico durante la prueba de tensión, los campos de desplazamiento son obtenidos por Interferometría Electrónica del Moteado y la técnica de corrimiento de fase. Las deformaciones son calculadas mediante el método de diferenciación de Stokes. Los resultados obtenidos son comparados mediante una simulación usando el análisis de elemento finito.
Estimación de la temperatura de suelo desde datos satelitales AVHRR-NOAA aplicando algoritmos de split window
Parra, J.C.;Sobrino, J.A.;Acevedo, P.S.;Morales, L.J.;
Revista mexicana de física , 2006,
Abstract: four algorithms based on the technique of split-window, to estimate the land surface temperature starting from the data provided by the sensor advanced very high resolution radiometer (avhrr), on board the series of satellites of the national oceanic and atmospheric administration (noaa), are carried out. these algorithms consider corrections for atmospheric characteristics and emissivity of the different surfaces of the land. fourteen images avhrr-noaa corresponding to the months of october of 2003, and january of 2004 were used. simultaneously, measurements of soil temperature in the carillanca hydro-meteorological station were collected in the region of la araucanía, chile (38°41' s; 72°25' w). of all the used algorithms, the best results correspond to the model proposed by sobrino and raussoni (2000), with a media and standard deviation corresponding to the difference among the temperature of floor measure in situ and the estimated for this algorithm, of-0.06 and 2.11 k, respectively.
Avalia？？o da zona de transi？？o interfacial pasta-agregado leve em concretos com sílica ativa e látex SBR
Rossignolo, J.A.;
Matéria (Rio de Janeiro) , 2007, DOI: 10.1590/S1517-70762007000300015
Abstract: this paper deals with the effect of silica fume and styrene-butadiene latex (sbr) on the microstructure of the interfacial transition zone (itz) between portland cement paste and lightweight aggregates (expanded clay). scanning electron microscope (sem) equipped with and energy dispersive x？ray analysis system (eds) was used to determine the interfacial transition zone thickness. in the plain concrete a marked itz around the aggregate particles (30mm) was observed, while in concretes with silica fume or latex sbr the itz was less pronounced (20-25mm). however, the better results were observed in concretes with silica fume and latex sbr (8-15mm).
Experiência iniciativa Hospital Amigo da Crian？a
Lamounier, J.A.;
Revista da Associa？？o Médica Brasileira , 1998, DOI: 10.1590/S0104-42301998000400011
Abstract: in the study is analyzed and described the initiative called "initiative baby friendly hospitals", a program which started in brazil, 1992. this initiative intends to support, to protect and to promote the breastfeeding as proposed in a meeting in 1990 in florence, italy, which was promoted by who and unicef. the basic goal of this initiative is to mobilize health professionals and hospital or maternity workers for changing their routines and conducts aiming to prevent the early wean. the health establishments are evaluated based on the "ten steps for success of breastfeeding, a group of goals created in the same meeting. in brazil, the evaluation is coordinated by the federal government through the pniam (programa nacional de incentivo ao aleitamento materno). a baby friendly hospital, if approved, receives from the minister of health, a federal governmental agency (sus) a differential payment for childbirth assistance and prenatal accompaniment, 10% and 40%, more respectively. until 1998 year there were 103 baby friendly hospitals in brazil, with the majority of them located in the northeast area (68,1%). however, taking in accounting the number of 5650 hospitals linked to sus in the country, less than 2.0% are baby friendly hospitals. on the basis of the experience and according with pniam data the implementation of the ten steps and the incentive to breastfeeding through baby friendly hospitals have resulted in a significant increase of breastfeeding incidence and duration in brazil.
The Impact of Agriculture and Tourism Potentials on Sustainable Rural Development in Ekiti State
J.A Ogundele
African Research Review , 2010,
Abstract: The rural areas, which inhabit the greater proportion of the population, mostly in developing nations, are the main sources of primary products (agriculture and minerals) for urban and industrial areas, hence the rural dwellers are regarded as the set of population that provide engine of in the development process of a nation (Long, 1982). Equally, tourism in rural environment is a potential strategy of developing the rural areas as an alternative to existing strategies. As a result of this, paper, through descriptive techniques, identifies the various agriculture and tourism potentials within the rural areas, identifies the impacts of these potentials on rural dwellers and suggests various processes of preserving these potentials for self-sustainable development. The result of the findings shows that there is a direct linkage between agricultural and tourism potentials and rural development. Though, agriculture and tourism may exacerbate pollution problems, environmental degradation and other social ills but effective and positive linkages provide ample benefits to the people in the such as job opportunities, generate income and other economic benefits to the people in the rural areas. Key Words: Agriculture, Tourism, Potentials, Rural environment, Sustainability
Conservative management of intraabdominal injuries
J.A Loveland
Continuing Medical Education , 2010,
Abstract: Management of paediatric abdominal trauma has evolved over the last 4 decades. Current strategies for non-operative management of most blunt solid-organ injuries developed from the observation that most of these injuries would ‘heal themselves’ and that operative intervention could interfere with this process. Organs most commonly injured are the liver and spleen, followed by kidney, pancreas and hollow viscera. In this article I concentrate on the subset of patients injured by blunt mechanisms, unless, under exceptional circumstances, management of penetrating abdominal injury should be active and aggressive, with nonoperative management being the exception. Although conservative management is appropriate for the vast majority of patients who have sustained blunt abdominal trauma, one must not compromise the care of unstable patients by persevering with a conservative approach in the case of life-threatening haemodynamic instability. Such patients require urgent surgery. The challenge is to identify these patients without delay.
An overview of recent developments in translation studies with special reference to the implications for Bible translation
J.A. Naude
Acta Theologica , 2002,
Abstract: An overview of recent developments of the discipline which deals with the activity of translation, as well as the implications for Bible translation, is presented. Starting off with a discussion of the disciplinary nature of translation studies, an overview of some developments emphasising the source text, the process of translation, the reception of the translated text, and the cultural-social bound character of translation, is offered. Since the early eighties there has been a tendency within translation studies to move away from the normative and prescriptive approaches to translation and to adopt a descriptive approach towards the study of translated literature. Descriptive translation theorists attempt to account not only for textual strategies in the translated text, but also for the way in which the translation functions in the target cultural system. The implications that these recent theoretical developments have for Bible translation practice and criticism of Bible translations are arrived at in the last instance. (Acta Theologica, Supplementum 2, 2002: 44-69)
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