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Search Results: 1 - 10 of 386792 matches for " Emilio. de los Ríos Ibarra "
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Composting Used as a Low Cost Method for Pathogen Elimination in Sewage Sludge in Mérida, Mexico
Dulce Diana Caba?as-Vargas,Emilio. de los Ríos Ibarra,Juan. P. Mena-Salas,Diana Y. Escalante-Réndiz,Rafael Rojas-Herrera
Sustainability , 2013, DOI: 10.3390/su5073150
Abstract: Spreading sewage sludge from municipal wastewater (MWW) treatment on land is still a common practice in developing countries. However, it is well known that sewage sludge without special treatment contains various pollutants, which are (re)introduced into the environment by sludge landspreading and which might in turn have harmful effects on the environment and human health. This is more dangerous in places like Merida, Mexico, where soil is calcareous with fractures along the ground and thin layers of humus. Consequently, any liquid and semisolid wastes have the potential of percolating to the subsurface and contaminate the aquifer. The main aim of this work was using composting as a low cost process to eliminate pathogens contained in sewage sludge from MWW treatment in order to use the final product for land spreading in a safe way for both environment and human health. Two piles for composting process at real scale were settled using a mixture of sewage sludge from municipal waste water and green waste. Composting was carried out by windrow process and it was monitored during four weeks. Concentration of helminth eggs, salmonella and faecal coliforms were measured twice a week to observe its behavior and, as a control process, Temperature, Moisture Content (MC), and pH were also measured. After 30 days of composting sludge from municipal waste water system, salmonella was eliminated by 99%, faecal coliforms by 96% and helminth eggs by 81%. After 3 months compost reached GI = 160%, so did not show any phytotoxicity to seeds.
Salpingostomía lineal por laparoscopia para el tratamiento de un embarazo ectópico bilateral espontáneo: reporte de caso
De Los Ríos,José F; Casta?eda,Juan D; Restrepo,Emilio A;
Revista Colombiana de Obstetricia y Ginecología , 2006,
Abstract: spontaneous bilateral ectopic pregnancy is a rare clinical condition occurring in 1 out of 1,580 ectopic pregnancies. 72 cases of bilateral ectopic pregnancy have been reported during the last 25 years, 31 or them being spontaneous and none of them having been correctly diagnosed before surgery. treatment is much the same as that for unilateral ectopic pregnancies, depending on the patient’s reproductive prospects and damage found in the tubes. 8 cases of lineal laparoscopic salpingostomy for treating bilateral ectopic pregnancies have previously been reported. the post-operative state of the tubes was reported in just one of these cases. this is the first report to our knowledge of a case in colombian literature regarding a spontaneous bilateral ectopic pregnancy conservatively treated by laparoscopy in which tubal patency 4 months post-operatively was also evaluated by means of a sonohysterosalpingography.
Salpingostomía lineal por laparoscopia para el tratamiento de un embarazo ectópico bilateral espontáneo: reporte de caso Lineal laparoscopic salpingostomy for treating spontaneous bilateral ectopic pregnancy: a case report
José F De Los Ríos,Juan D Casta?eda,Emilio A Restrepo
Revista Colombiana de Obstetricia y Ginecología , 2006,
Abstract: El embarazo ectópico bilateral espontáneo es una condición clínica infrecuente que ocurre en 1 de cada 1.580 embarazos ectópicos. En los últimos 25 a os se han reportado 72 casos de embarazo ectópico bilateral, 31 de los cuales han sido espontáneos y en ninguno de ellos se ha logrado hacer un correcto diagnóstico preoperatorio. Su tratamiento, al igual que en los ectópicos unilaterales depende de la expectativa reproductiva de la paciente y del estado de las trompas. Existen seis reportes en la literatura de salpingostomía lineal por laparoscopia en pacientes con embarazo ectópico tubárico bilateral. Sólo uno de ellos informa el estado de ambas trompas después de este tipo de intervención. En este trabajo se reporta el primer caso descrito en la literatura colombiana de un embarazo ectópico bilateral espontáneo, en el que se practica manejo conservador por laparoscopia y además, cuatro meses después, se confirma la permeabilidad de ambas trompas por medio de una sonohisterosalpingografía. Spontaneous bilateral ectopic pregnancy is a rare clinical condition occurring in 1 out of 1,580 ectopic pregnancies. 72 cases of bilateral ectopic pregnancy have been reported during the last 25 years, 31 or them being spontaneous and none of them having been correctly diagnosed before surgery. Treatment is much the same as that for unilateral ectopic pregnancies, depending on the patient’s reproductive prospects and damage found in the tubes. 8 cases of lineal laparoscopic salpingostomy for treating bilateral ectopic pregnancies have previously been reported. The post-operative state of the tubes was reported in just one of these cases. This is the first report to our knowledge of a case in Colombian literature regarding a spontaneous bilateral ectopic pregnancy conservatively treated by laparoscopy in which tubal patency 4 months post-operatively was also evaluated by means of a sonohysterosalpingography.
Mirada y trompe-l'ceil: La pregunta por la representación en Calderón
de los Ríos,Valeria;
Acta literaria , 2007, DOI: 10.4067/S0717-68482007000200008
Abstract: this text analyzes the problem of the gaze and of representation in the theatrical work of calderón. it takes his theories, systematized in his horacian "deposition in favor of the teachers of painting", as a starting point. through the examination of segments of his works, i configure the issue of the deceit of the senses or trompe l'ceil, typical of this historical period. at the end of the article, i study specifically the implications of the baroque mise-en-abime, in which the king is both, the ideal spectator of the baroque spectacle, and a character represented inside the work
La fotografía como clave de lectura de La nueva novela
de los Ríos,Valeria;
Estudios filológicos , 2009, DOI: 10.4067/S0071-17132009000100003
Abstract: this article proposes the idea that photography, as a medium of representation, is the model used for the construction of la nueva novela (the new novel) by juan luis martinez. photography joins ambivalent features, such as its romantic-scientific origin, its documental character, as well as its capacity to distort what it represents, deceiving the observer. given its intrinsic features, the photographic procedure allows the author to reflect on the representation, language, literature, identity and history.
Raúl Ruiz a través del Espejo: de la representación a la alegoría
de los Ríos,Valeria;
Aisthesis , 2010, DOI: 10.4067/S0718-71812010000100008
Abstract: the following essay is divided into two parts entitled "from this side" and "from the other side". the main objective is to analyze the work of the chilean filmmaker raúl ruiz, both in chile before the coup, and in france after it, so as to see the continuities and discontinuities in his work, where aesthetics, politics, exile and the position of a latin american subject coincide.
A NULL MODEL FOR EXPLAIN CRUSTACEAN ZOOPLANKTON SPECIES ASSOCIATIONS IN CENTRAL AND SOUTHERN PATAGONIAN INLAND WATERS
De los Ríos,Patricio;
Anales del Instituto de la Patagonia , 2008, DOI: 10.4067/S0718-686X2008000100002
Abstract: the zooplankton assemblages in water bodies of central and southern chilean patagonia, is characterized by high endemism and a relative low species richness, the main regulator factor would be the conductivity and trophic status of their habitats. the aim of the present study was analyze published and unpublished information about crustacean zooplankton in central and southern chilean patagonian lakes and ponds (44 - 53g s). to these data was applied the species / genera ratio, and also, a null mo-del analysis for species co-occurrence, based in a presence-absence species matrix, for determine the existence of random factors as regulator factors of species associations. finally, it was applied a jaccard index for determine potential similarities in species associations for site. the results revealed low species number in large and deep lakes, whereas in small shallow permanent and ephemeral ponds had high species number, and low value in the species genera / ratio. the results of null model revealed the absence of random factors as regulators of species associations for two of three simulations, and the results of jaccard index denoted the existence of three main groups based in the species associations of sites. these results agree with ecological information for southern patagonia. ecological and biogeographical topics are discussed.
La narrativa sonora de Luis Rafael Sánchez
de los Ríos,Valeria;
Atenea (Concepción) , 2011, DOI: 10.4067/S0718-04622011000100004
Abstract: this article explores the audible character of the novel la guaracha del macho camacho by the puerto rican author luis rafael sánchez. in this novel, writing imitates radio, for example through the inclusion of the discourse of a disc-jockey, a character who announces with insistence the success of the guaracha "la vida es una cosa fenomenal". the employment of the radio model -which appeals to the intimacy of the illiterate masses- contributes to the construction of the subjects and reveals the standardization present in the discourse of the characters. at the same time, it points to the potential construction of a community based on mass media culture.
FOTOGRAFíA, CINE Y TRADUCCIóN EN "LAS BABAS DEL DIABLO"
de los Ríos,Valeria;
Revista chilena de literatura , 2008, DOI: 10.4067/S0718-22952008000100001
Abstract: in this article, i analyze the short story "blow-up " by julio cortázar from a visual point of view. this text's central hypothesis is that cortázar relates writing, photography and cinema in order to put into play the connection between art, subject and reality. this link is mediated by technique, specifically by apparatuses such as the photographic camera and the typewriter. cortázar associates photography and writing through the concept of translation, constructing a protagonist that is at the same time an observer and a letrado. this protagonist, first a photographic subject, becomes an involuntary film spectator.
La promoción de la investigación en salud pública: búsqueda del equilibrio entre pertinencia y excelencia
de los Ríos,Rebecca;
Revista Panamericana de Salud Pública , 1999, DOI: 10.1590/S1020-49891999000400021
Abstract: those in charge of directing scientific research face a daunting task: finding a proper balance between excellence in research and that research's relevance to people's health problems. in developing countries, this task is further hampered by deficient scientific and technological infrastructure, the lack of competitiveness of its research community, and the shortage of research funds. this article explains some of the mechanisms that have been put in place in latin america to achieve a balance between excellence and relevance, especially by promoting research that targets pertinent public health problems. within this context, the multicenter studies being conducted under the auspices of the pan american health organization's program for the support of research are described. the article also lays out the fundamental features of a new model for international cooperation to generate knowledge to help resolve the public health problems of the countries of the americas.
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