2,014 research outputs found
Deficiência de ferro na doença renal crônica
No full textAnemia é uma complicação quase universal nos pacientes em estágios avançados de doença renal crônica (DRC). Ela está associada com maior número de internações hospitalares, maior mortalidade e pior qualidade de vida dos pacientes. Ela tem várias causas, sendo deficiência de eritropoetina e ferro as duas principais causas. A condição inflamatória presente na DRC interfere com a ação da eritropoetina e com a absorção intestinal de ferro e mobilização de ferro dos estoques, devido ao aumento de hepcidina. A correção parcial (não completa) da anemia promove melhores resultados nos pacientes com DRC
Remoção de H2S por meio de adsorção em óxido de ferro granular
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Ambiental, Florianópolis, 2013.O biogás é uma mistura gasosa, proveniente da decomposição anaeróbia de matéria orgânica, e que apresenta grande potencial para aproveitamento energético devido ao seu elevado teor de metano. Para promover uma queima eficiente em sistemas de conversão de energia, porém, alguns dos gases presentes no biogás devem ser eliminados ou ter sua concentração reduzida, como é o caso do sulfeto de hidrogênio (H2S). Esta dissertação pretende abordar a remoção de H2S por meio de óxido de ferro granular. O objetivo desse trabalho foi avaliar a eficiência de remoção de H2S a partir de uma mistura sintética, composta por 200 ppm de deste gás e balanço em N2, com o uso de óxido de ferro granular em uma coluna de 5,8 cm de diâmetro interno. O material granular utilizado é um resíduo proveniente do processo de obtenção do ácido sulfúrico a partir da pirita carbonosa, e que contém em sua composição 98% de hematita (Fe2O3). Foram realizados ensaios para se avaliar qual a melhor combinação entre a quantidade de material e velocidade linear do gás através da coluna, que proporcionassem as melhores eficiências de remoção de H2S. Os ensaios demonstraram que para velocidade linear de 1,0 cm.s-1 e coluna preenchida com 7,5 cm de material, ocorreu a remoção de 0,209 mgH2S.g-1 óxido de ferro granular. Para velocidade linear de 5,0 cm.s-1 e coluna preenchida com 30,0 cm de material, a capacidade de adsorção de H2S encontrada foi de 0,233 mg H2S. g-1 óxido de ferro granular. Os valores resultantes para velocidades lineares e quantidades de material distintas indicaram que para melhores capacidades de remoção de H2S com este material deve-se buscar aliar baixas velocidades lineares do gás e coluna preenchida com grande quantidade de óxido de ferro granular. A comparação da superfície específica BET encontrada entre o óxido de ferro granular utilizado, de 10,12 cm²-g-1 de material, e materiais comerciais utilizados para o mesmo fim, demonstra que o material utilizado nos experimentos apresenta baixa capacidade de remoção de H2S. O valor encontrado para o raio médio dos poros, de 267,2 nm, é classificado na faixa de macroporos, sendo que esta característica também evidencia a baixa capacidade de adsorção de H2S deste tipo de óxido de ferro granular.Abstract : Biogas is a gas mixture, originated from anaerobic decomposition of organic matter, which presents great energy potential due to its high methane content. To promote efficient energy conversion of biogas in engines, however, some of the gases presented in the mixture must be disposed of or have their concentration reduced, as hydrogen sulfide (H2S). This research aims to assess the removal of H2S by adsorption on granular iron oxide. This evaluation was conducted by making a synthetic gas mixture containing 200 ppm of H2S in balance with N2 run through a column of 5.8 cm of internal diameter, filled with granular iron oxide as adsorbent. The iron oxide used is composed 98% of hematite (Fe2O3), and it is a byproduct of the sulfuric acid formation, which uses carbonaceous pyrite as raw material. Tests to evaluate the best combination between the amount of granular iron oxide and linear gas velocity values were performed, in order to provide the best H2S removal efficiency. The tests have shown that for linear gas velocity of 1.0 cm.s-1 and column filled with 7.5 cm of granular iron oxide led to a removal of 0.209 mgH2S.g-1 of granular iron oxide. For a linear velocity of 5.0 cm.s -1 and column filled with 30.0 cm of granular iron oxide, the adsorption capacity found was 0,233 mg H2S.g-1 of granular iron oxide. The resulting values for distinct linear gas velocities and amount of material used indicate that the best H2S removal capacities can be achieved combining low linear gas velocity values and great loads of granular iron oxide. A comparison of the BET surface area found to the granular iron oxide used, of 10.12 cm ² .g- 1 of material , with the commercial materials used for the same purpose, demonstrated that the granular iron oxide used in the tests presents a low H2S removal capacity. The value found for the average pore radius, of 267.2 nm , is classified in the macropore range, and this feature also indicates a low H2S adsorption capacity for this type of granular iron oxide
David M. GLANTZ (con Jonathan M. House): A las puertas de Stalingrado. Operaciones germano-soviéticas de abril a agosto de 1942, Madrid, Desperta Ferro Ediciones 2017, trad. de Hugo A. Cañete Carrasco, ISBN: 978-84-945187-9-9
No full textReview of the book David M. GLANTZ (con Jonathan M. House): A las puertas de Stalingrado. Operaciones germano-soviéticas de abril a agosto de 1942, Madrid, Desperta Ferro Ediciones 2017, trad. de Hugo A. Cañete Carrasco, ISBN: 978-84-945187-9-9. Authored by Daniel Ortega del Pozo.Reseña de la obra de David M. GLANTZ (con Jonathan M. House): A las puertas de Stalingrado. Operaciones germano-soviéticas de abril a agosto de 1942, Madrid, Desperta Ferro Ediciones 2017, trad. de Hugo A. Cañete Carrasco, ISBN: 978-84-945187-9-9. A cargo de Daniel Ortega del Pozo
Il milanese Francesco Ellio traduttore del 'Persiles' di Cervantes (1626)
No full textThe essay presents a research around the figure of the Milanese poet Francesco Ellio,
who lived in Milan in the early seventeenth century and is so far known for being the
author of idylls. In this paper Ellio, whose dense network of contacts and relationships in the
Lombard city is gathered, is studied because he is the author of the first Italian translation of
Cervantes’ Perciles, the last masterpiece of the Hispanic genius, published in 1617. The translation
was edited in Venice for the printer Fontana in 1626, placing itself among the last traces
of Ellio’s life, and will remain the only one in Italian until the nineteenth century
A Regeneração e os caminhos-de-ferro
No full textA primeira metade do século XIX em Portugal foi marcada por uma enorme instabilidade política que, se não impediu a realização de reformas institucionais (sobretudo na década de 1830), impossibilitou a prossecução de uma política de investimentos em obras públicas (Mata et al., 1993, 142). Na década de 1840, Costa Cabral introduziu alguma estabilidade no sistema político nacional e, em 1845, conseguiu assinar o primeiro contrato para construir um caminho-de-ferro em Portugal com a recém-form..
Sonoma twaini Ferro 2016, new species
No full text13. Sonoma twaini new species Fig. 13, 17; Map 39. Description. Holotype, male. Measurements: head 0.25 long, 0.31 wide; pronotum 0.30 long, 0.34 wide; elytra 0.59 long, 0.28 wide; antennomeres 1–11 total 0.57; total length 1.92. Body brown, maxillary palpi and legs paler. Body with moderate length setae (approximately 1/2 or less width of eye). Head. Eyes prominent, maximum length in dorsal view 0.47x length of first antennal segment, with approximately 30 facets. Antennomere 2 approximately 0.90x width of 1; 3 smallest. Thorax. Elytra with indistinct sutural foveae; 2 foveae lateral to sutural fovea; central row of 3 foveae in basal 1/3. Winged. Metatibia unmodified. Abdomen. Tergite IV with transverse patch of microtrichia narrowly interrupted at midline. Basal lateral foveae on ventrites V–VII. Basal pubescence present on all visible ventrites. Aedeagus. Elongate. Left paramere: equal in length to endophallus; subequal in width from base to apex; with 4–5 stout apical setae and 3 ventral subapical setae. Endophallus: widest at basal 1/5; with two ventral processes arising 2/3 from base projecting perpendicular to aedeagus; apex bent 90° to the left. Right paramere: 2/3 length left paramere; subequal in width from base to apex; with 4–5 stout apical setae and 3 ventral subapical setae. Type Material. Holotype, male: * T. R. Haig Whiskeytown Shasta Co. Cal. III.9.1973 (1♂). Deposited in CSCA. Paratypes (n=4). UNITED STATES: CALIFORNIA: Shasta Co.: * T. R.Haig Whiskeytown Shasta Co.Cal. III.9.1973 (CSCA) (2♂). * T. R.Haig Whiskeytown Shasta Co.Cal. I.31.1973 (CSCA) (1♂). Trinity Co.: * CALIF:Trinity Co. Junction City III-12-1981 T. R.Haig coll. (FMNH) (1♂). Geographical Distribution. Sonoma twaini is only known from two locations, one each in Shasta and Trinity counties, California. Comments. Sonoma twaini was collected in January and March, collection method is unknown. Aedeagal characters of S. twaini are superficially similar to S. wintuorum, S. stewarti, and S. colberti all of which share a similar gestalt comprised of narrow, elongate parameres and an elongate endophallus with elaborate apical hooks or processes. The flowing combination of characters will separate S. twaini from the others: endophallus with two ventral processes arising 2/3 from base projecting perpendicular to aedeagus [absent in S. wintuorum, S. stewarti, and S. colberti]; without elongate thin posteriorly directed process arising 2/3 from base of endophallus [present in S. wintuorum and S. stewarti]; endophallus with single apical process [two in S. wintuorum, three in S. colberti]. Etymology. Sonoma twaini is named for the character Mark Twain, developed by Samuel Langhorne Clemens, an author, lecturer, philosopher, humanitarian, champion of science, and humorist. Clemens lived in California for awhile, but traveled nowhere near where this species occurs—the author forgives the oversight.Published as part of Ferro, Michael L., 2016, Fourteen new species of Sonoma Casey (Coleoptera: Staphylinidae: Pselaphinae) with a key to species from western North America, pp. 1-57 in Insecta Mundi 2016 (472) on page 17, DOI: 10.5281/zenodo.517050
Deficiência de ferro na doença renal crônica Iron deficiency in chronic kidney disease
No full textAnemia é uma complicação quase universal nos pacientes em estágios avançados de doença renal crônica (DRC). Ela está associada com maior número de internações hospitalares, maior mortalidade e pior qualidade de vida dos pacientes. Ela tem várias causas, sendo deficiência de eritropoetina e ferro as duas principais causas. A condição inflamatória presente na DRC interfere com a ação da eritropoetina e com a absorção intestinal de ferro e mobilização de ferro dos estoques, devido ao aumento de hepcidina. A correção parcial (não completa) da anemia promove melhores resultados nos pacientes com DRC.Anemia is an almost universal complication of patients in advanced stages of chronic kidney disease (CKD). It is associated with more hospitalizations, increased mortality and worse quality of life. Although there are several causes, erythropoietin and iron deficiency are the most common. The inflammatory condition present in CKD interferes with the action of erythropoietin, intestinal iron absorption and iron mobilization from deposits, due to increased hepcidin concentrations. Partial but incomplete correction of anemia promotes better outcomes in patients with CKD
Sonoma maryae Ferro 2016, new species
No full text9. <i>Sonoma maryae</i> new species <p>Fig. 9, 37; Map 23.</p> <p> <b>Description.</b> Holotype, male. Measurements: head 0.28 long, 0.39 wide; pronotum 0.37 long, 0.43 wide; elytra 0.72 long, 0.39 wide; antennomeres 1–11 total 0.87; total length 1.96. Body brown; antennae, maxillary palpi, and legs paler. Body with short setae (1/4 or less width of eye).</p> <p> <i>Head</i>. Eyes large, maximum length in dorsal view 1.66x length of first antennal segment, with approximately 70 facets. Antennomere 2 approximately 0.78x width of 1; 3 smallest.</p> <p> <i>Thorax</i>. Pronotum with lateral discal foveae. Elytra with indistinct sutural foveae; 1 fovea lateral to sutural fovea; central row of 3 foveae in basal 1/3. Winged. Metatibia unmodified.</p> <p> <i>Abdomen</i>. Tergite IV with transverse patch of microtrichia narrowly interrupted at midline. Basal lateral foveae on ventrites obscured, weak if present. Basal pubescence present on all visible ventrites.</p> <p> <i>Aedeagus</i>. Left paramere: elongate oval; ventral shelf running along 9/10 mesal margin; subapical digitate process with 5 projections directed mesad; apical tuft of 7–10 setae subequal in length to paramere; 5 additional setae along inner margin in apical 1/3, directed mesad. Endophallus: more or less same width throughout; curved; base projecting behind right paramere, abruptly curving to the left until achieving midline of aedeagus, straightening and projecting posteriorly until apical 1/5 curves right. Right paramere: oval with ventral shelf running from apex to inner margin near base; single subapical digitate ventral process with multiple convoluted projections; apical tuft of 12–15 setae subequal in length to paramere.</p> <p> <b>Type Material.</b> Holotype, male: * Oregon:Bent. [Benton] Co., Mary’s Peak,1800’ II-1-1976 / LRussell sift cedar litter (1♂). Deposited in FMNH.</p> <p> <b>Geographical Distribution.</b> <i>Sonoma maryae</i> is known from a single specimen collected from Marys Peak, Benton Co., California.</p> <p> <b>Comments.</b> <i>Sonoma maryae</i> was collected in February by sifting cedar litter.</p> <p> Aedeagal characters of <i>Sonoma maryae</i> are similar to those of <i>S. cavifrons</i> and <i>S. parviceps.</i> The three can be separated based on the following characters, <i>S. cavifrons</i> in brackets [], <i>S. parviceps</i> in braces {}: left paramere with small basal lobe on inner margin that does not project across midline of phalobase [basal lobe larger, projecting slightly beyond midline of phalobase], {basal lobe pronounced, symmetrical with midline of phalobase}; left paramere with digitate process with 5 projections directed mesad [digitate process with three projections], {digitate process with two distinct projections}; endophallus with three distinct curves—at base, below the midline, and subapically [with major curve at base, otherwise projected posteriorly, slight curve at apex], {with major curve at base, apex with distinct “apical hook”, inner structures distinct}; right paramere with single subapical digitate ventral process with multiple convoluted projections [subapical digitate ventral projection with single tip], {ventral projection in two parts, distal part consisting of three short processes, basal part elongate projection shaped like a crooked finger}.</p> <p> <b>Etymology.</b> <i>Sonoma maryae</i> is named for Mary Elizabeth (Mary E.) Ferro Chapa, the author’s sister and a longtime supporter of his research endeavors, who shares the name of the locality.</p>Published as part of <i>Ferro, Michael L., 2016, Fourteen new species of Sonoma Casey (Coleoptera: Staphylinidae: Pselaphinae) with a key to species from western North America, pp. 1-57 in Insecta Mundi 2016 (472)</i> on pages 13-14, DOI: <a href="http://zenodo.org/record/5170505">10.5281/zenodo.5170505</a>
Cátedra Patrimonial Federico Ferro Gay. 25 de junio del 2008. (Parte1).
No full textCátedra Patrimonial Federico Ferro Gay, realizada en el año 2008, por parte del Instituto de Ciencias Sociales y Administración (ICSA) de la Universidad Autónoma de Ciudad Juárez (UACJ). En esta sesión se abarca la historia de la hermenéutica, comenzando en la Época Medieval, para proseguir con el Renacimiento, el Barroco, la Ilustración y el Romanticismo. Se mencionan intelectuales como Hugo de San Víctor, Pedro Abelardo, Tomas de Aquino, Sor Juana Inés de la Cruz, Jean Grondin, entre otros
Welcome to the hall of Argentinean monsters
No full textFil: Ferro, Gabriel Fernando. Universidad de Buenos Aires; Argentina.Publicamos el prólogo del libro “200 años de monstruos y maravillas argentinas” escrito por el historiador Gabo Ferro. Agradecemos al autor y a la Editorial Beatriz Viterbo la autorización para dar a conocer a nuestros lectores la obra mencionada, que cuenta, además, con ilustraciones de Christian Montenegro y el diseño de Laura Varsky. (No sé, si se corresponde a un resúmen, pero en el dossier figura como uno).We are proud to publish the preface of the book “200 years of wonders and monsters in Argentina” written by the historian Gabo Ferro. We thank the author and the publisher Beatriz Viterbo for the authorization to reproduce the work. The preface also counts with illustrations by Christian Montenegro and the design of Laura Varsky
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