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Search Results: 1 - 10 of 19512 matches for " Alberto Acevedo "
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The HLP mutation confers enhanced resistance to leafrust in different wheat genetic backgrounds  [PDF]
Cristina Andrea Kamlofski, Alberto Acevedo
Agricultural Sciences (AS) , 2010, DOI: 10.4236/as.2010.12008
Abstract: In several plant species, lesionmimic mutants simulate the diseaseresistance response in the absence of pathogens. Interestingly, some of these mutants confer broadspectrum resistance to diverse pathogens. We previously demonstrated that the HLP (hypersensitivelike phenotype) mutant of bread wheat (Triticum aestivum L.) exhibited spontaneous hypersensitive response (HR) in the absence of any pathogen input. However, when HLP plants showing HR phenotype were challenged with leafrust (Puccinia triticina) they were more resistant than plants of the motherline of comparable developmental stage that did not show spontaneous HR, suggesting that the HLP mutation may confer enhanced resistance to the fungus. In this paper we validate the aforementioned finding in several wheat genetic backgrounds. Two way crosses were performed among the HLP mutant and eight wheat commercial stocks, and third backcross progenies with and without spontaneous HR were challenged with leafrust to investigate the response to the fungus. Backcrosses to cv. Sinvalocho M.A., the mother line, and cv. Purplestraw, highly susceptible to leafrust attack, were used as controls. Third backcross progenies of cvs. Sinvalocho M.A., Purplestraw, Buck Guaraní and Pro INTA Imperial bearing spontaneous HR phenotype were more resistant to the fungal pathogen than third backcross progenies that did not carry the HLP mutation. Other four wheat stocks were as healthy as the HLP mutant. As expected, backcross to the motherline demonstrated that the HLP mutation conferred an additional resistance to the already healthy performance displayed by the motherline at adult plant stage. The introgression of the HLP mutation conferred heigh tened leafrust resistance and caused no kernel weight reduction on the backcrossed progenies. Taken together, these data validate the direct use of this type of mutations in diseaseresis tance breeding.
Mallas sintéticas irreabsorbibles: Su desarrollo en la cirugía de las hernias abdominales Not absorbable synthetic mesh for the repair of groin hernia
ALBERTO ACEVEDO F
Revista Chilena de Cirugía , 2008,
Abstract:
Rese a de "Respuestas. Por una antropologia reflexiva" de Pierre Bourdieu y Loic J. D. Wacquant
Silvestre Alberto Acevedo
Estudios sobre las Culturas Contemporaneas , 1998,
Abstract:
Rese a de "Sociologia del riesgo" de Niklas Luhmann
Alberto Acevedo,Francisco Vargas
Estudios sobre las Culturas Contemporaneas , 2000,
Abstract:
Industrialización y dinámicas espaciales en Bogotá: las urgencias de la gestión territorial
Rendón Acevedo,Jaime Alberto;
Semestre Económico , 2009,
Abstract: the structural and institutional reforms that have been adapted to the country, especially in bogota in order to reach the productivity and competitive world standards, have evolved in a high concentration of the productive activities in the capital city, despite the fact that it was form ports and borders form which more dynamism was expected. never the less a loss in the relative and absolute dynamism in the manufacturing industry has been seen in bogota as well as in the traditional industrial centers. this has implied maintaining the cities as attraction poles that require a space reconfiguration, including physical urban integration processes. it has become a priority for the cities, to think their territory, its regional dimension, and reach an agreement in a reindustrialization process that leads to the answer of the county's and region's needs. this article first presents a theoretical debate about the importance of space and territory as necessary elements for the strategy design for the future. afterwards the case of bogota′s behavior and its space tendencies in the manufacturing industry are analyzed. finally the conclusions of the paper are presented.
Alteraciones de la motricidad del cuerpo del esófago en pacientes con enfermedad por reflujo gastroesofágico sin reflujo patológico en la monitorización de pH de 24 h
Acevedo F,Alberto; Espinoza,Jorge;
Revista médica de Chile , 2000, DOI: 10.4067/S0034-98872000001100008
Abstract: background: in a high proportion of patients with symptomatic gastroesophageal reflux disease, 24 h esophageal ph monitoring is normal. aim: to study esophageal motility in patients with symptomatic gastroesophageal reflux disease and normal 24 h esophageal ph monitoring. patients and methods: fourteen patients (12 women, aged 28 to 74 years old) with esophageal reflux disease and normal 24 ph monitoring and 14 asymptomatic controls (8 women, aged 19 to 69 years old), were studied. symptoms were evaluated using an analog scale and all subjects underwent a barium meal, upper gastrointestinal endoscopy and a standard esophageal manometry. results: lower esophageal sphincter was normal in 11 patients, hypotonic in one and displaced to the thorax in two. esophageal wave amplitude was lower in patients than in asymptomatic controls (10 to 50 and 13 to 70 mm hg respectively). the proportion of hypotonic waves was grade i and ii in seven patients, grade iii in three and grade iv in four cases. four patients had localized aperistalsis (that can be considered normal) and four had more severe forms of aperistalsis, along with severe hypotonia. conclusions: patients with gastroesophageal reflux disease without alterations in 24 h ph monitoring, have alterations in esophageal motility (rev méd chile 2000; 128: 1237-44)
Alteraciones de la motricidad del cuerpo del esófago en pacientes con enfermedad por reflujo gastroesofágico sin reflujo patológico en la monitorización de pH de 24 h Esophageal motility disorders in subjects with esophageal reflux disease but without abnormal reflux, measured by 24h Esophageal pH monitoring
Alberto Acevedo F,Jorge Espinoza
Revista médica de Chile , 2000,
Abstract: Background: In a high proportion of patients with symptomatic gastroesophageal reflux disease, 24 h esophageal pH monitoring is normal. Aim: To study esophageal motility in patients with symptomatic gastroesophageal reflux disease and normal 24 h esophageal pH monitoring. Patients and methods: Fourteen patients (12 women, aged 28 to 74 years old) with esophageal reflux disease and normal 24 pH monitoring and 14 asymptomatic controls (8 women, aged 19 to 69 years old), were studied. Symptoms were evaluated using an analog scale and all subjects underwent a barium meal, upper gastrointestinal endoscopy and a standard esophageal manometry. Results: Lower esophageal sphincter was normal in 11 patients, hypotonic in one and displaced to the thorax in two. Esophageal wave amplitude was lower in patients than in asymptomatic controls (10 to 50 and 13 to 70 mm Hg respectively). The proportion of hypotonic waves was Grade I and II in seven patients, Grade III in three and grade IV in four cases. Four patients had localized aperistalsis (that can be considered normal) and four had more severe forms of aperistalsis, along with severe hypotonia. Conclusions: Patients with gastroesophageal reflux disease without alterations in 24 h pH monitoring, have alterations in esophageal motility (Rev Méd Chile 2000; 128: 1237-44)
The naked truth of postdocs in Spain
Alberto Jimenez-Valverde,Pelayo Acevedo
Frontiers of Biogeography , 2012,
Abstract:
Affordances in the Home Environment for Motor Development: A Cross-Cultural Study between American and Lebanese Children
Diala Ammar,Gabriel A. Acevedo,Alberto Cordova
Child Development Research , 2013, DOI: 10.1155/2013/152094
Abstract:
Affordances in the Home Environment for Motor Development: A Cross-Cultural Study between American and Lebanese Children
Diala Ammar,Gabriel A. Acevedo,Alberto Cordova
Child Development Research , 2013, DOI: 10.1155/2013/152094
Abstract: Considerable efforts have been devoted to map the relations between the home environment and selected aspects of child’s development. A recent instrument was developed that aimed at assessing the affordances in the home environment, the AHEMD-SR. Although the AHEMD-SR gave insight into affordances in the home, it was focused on two specific populations from the United States and Portugal. Currently, there is limited research regarding the validity of this instrument when used in different cultures. The purpose of this study was to compare a sample of Middle Eastern children to the normative sample that was used to validate the AHEMD. Results showed a significance difference between the socioeconomic statuses between the groups. Concerning factor analysis, results showed that the Lebanese group had five factors loading as did the American/Portuguese sample but with variables loading differently. Interestingly, the Lebanese group showed higher scores for affordances inside the home such replica toys and games. Our findings show that the state of the environment may play a role in the affordances and development. Future work is needed to look at the specific loading and possible variables that may be included in the AHMED-SR to look at other cultures that may have other limitations. 1. Introduction Recently there has been much attention investigating the relationship between motor development and the home environment. Perhaps the most notable contribution in this area is the Home Observation for Measurement of the Environment (HOME) inventory created by Caldwell and Bradley [1] that is used in numerous studies to examine environmental effects on cognitive and social development. Although the HOME inventory was originally designed to specifically examine the relationship of the home to the child’s motor development, one of the most striking and consistent HOME findings has been the strong relationship of the availability of stimulating play materials to motor development rather than the “global measures of environmental quality such as SES (socioeconomic status)”[2, page 217]. Although specific motor development measures in the home have been used (e.g., [3–6], Parks and Bradley, 1991,) there is still minimal information available in relation to the multidimensional effects of the home on motor development. In a review, Abbott et al. [7] concluded that the home environment is an important factor contributing to infant motor development but still little research exists examining this relationship. It was suggested that the need for “a valid measure
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