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Search Results: 1 - 10 of 473189 matches for " Gabriela; Mu?oz A "
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Identification of a minimal microsatellite marker panel for the fingerprinting of peach and nectarine cultivars
Rojas,Gabriela; Méndez,Marco A; Muoz,Carlos; Lemus,Gamalier; Hinrichsen,Patricio;
Electronic Journal of Biotechnology , 2008,
Abstract: the genetic characterization of 117 peach and nectarine cultivars (prunus persica (l.) batsch) using microsatellite (ssr) markers is presented. analyzed genotypes include the complete list of cultivars under intellectual property (ip) protection in chile. one hundred and two out of the 117 cultivars under study could be identified using only 7 ssrs. other 5 cultivars were differentiated using 3 additional markers, but 5 pairs of genotypes were not differentiable. the average expected heterozygosity for the set of markers was 0.55, ranging from 0.28 in bppct-008 to 0.81 in cppct-022, with an f value of 0.37. a neighbor-joining dendrogram showed that, with few exceptions, peaches and nectarines clustered separately. these results are the basis for the development of a fingerprinting protocol for the unequivocal identification of most of the peach and nectarine cultivars officially registered in chile.
Prevalence of anemia during pregnancy: Results of Valencia (Venezuela) anemia during pregnancy study
Martí-Carvaja,Arturo; Pe?a-Martí,Guiomar; Comunian,Gabriela; Muoz,Sergio;
Archivos Latinoamericanos de Nutrición , 2002,
Abstract: to determine the prevalence of anemia during pregnancy in venezuelan pregnant women. by using a cross-sectional study, 630 venezuelan pregnant women in their third trimester at labor from the valencia anemia during pregnancy study were studied. anemia during pregnancy was defined according to who guidelines (hb < 11g/dl), iron deficiency was considered when serum ferritin level was < 12 ng/ml, and when serum folate level was < 3ng/ml, it was considered as folate deficiency. 630 pregnant women (mean [± sd] age, 24± 6.4 years) having an average of hb 11.38±1.47 g/dl [95%ci = 11.27 to 11.50] were studied. no patient had hemolytic anemia nor clinical infections. almost all patients were from low or very low socioeconomic status. prevalence of anemia was 34.44% (severe: 1.8%, moderate: 15.2%, and mild: 83%). iron deficiency anemia (ida) was present in 39.2% (95%ci= 32.7 to 45.7), prevalence of folate deficiency anemia (fda) was 11.98% (95%ci = 7.6% to 16.3%). combined anemia (ida and fda) occurred in 11.52% (95%ci= 7.27% to 15.7%). multivariate analysis showed that multiparous (odds ratio -or-: 1.95, 95%ci= 1.28 to 2.97, p =.002) and supplement use of iron (or: .55 (95%ci= .33 to .91 , p= .02) are associated with ida. the factors associated with fda were: supplement use of folic acid (or: .37 (95%ci=.19 to .71 , p = .003) and appropriate prenatal control (or: .51 95%ci= .27 to .96, p = .04). prevalence of anemia during pregnancy was found to be high. educational efforts should be stressed in order to encourage improvements in the prenatal care visits
Association between prematurity and maternal anemia in Venezuelan pregnant women during third trimester at labor
Martí,Arturo; Pe?a-Martí,Guiomar; Muoz,Sergio; Lanas,Fernando; Comunian,Gabriela;
Archivos Latinoamericanos de Nutrición , 2001,
Abstract: to determine the association and its magnitude between prematurity and anemia in women in their third trimester of pregnancy and at labor. an incident case - control study was conducted using 2 controls per case. data was obtained in a tertiary hospital in valencia, venezuela. a total of 543 women who delivered between may and december 1996 entered into the study. women having a preterm delivery, less than 37 weeks of gestation at delivery, were defined as cases (n=181). anemia was defined according to who as hb less than 11g/dl. logistic regression was used to analyze the data and likelihood ratio test was done for model comparison. maternal anemia was found to be significantly associated with prematurity (odds ratio: 1.70; 95%ci = 1.18 to 2.57 p = .001), after adjusting for placental abruption, prom, previous premature labor, prenatal care visits, and uterine bleeding during more than one trimester. maternal anemia at the end of the third trimester of pregnancy, at labor, was associated with an increased risk of prematurity
Eficacia de tres estrobilurinas para el control de mancha rojiza (Guignardia mangiferae) y mancha negra (Guignardia citricarpa) en frutos de limón, en Tucumán, República Argentina
Fogliata,Gabriela M.; Muoz,M. Lorena; Rojas,Alejandro A.; Ploper,L. Daniel;
Revista industrial y agr?-cola de Tucum??n , 2011,
Abstract: argentina leads lemon world production and industrialization. the province of tucumán generates 87% of national production, processing 65% of this production in factories and commercializing 35% as fresh fruit, mainly for exports, which requires high quality, disease-free fruits. two fungal species of guignardia are present in tucumán: one is g. citricarpa (phyllosticta citricarpa) and the other is g. mangiferae (p. capitalensis). the former is the causal agent of citrus black spot, a quarantine pathogen for major consumer markets, and the latter is a cosmopolitan fungus which causes red spot in lemon in tucumán. both diseases are controlled with copper, strobilurins, mancozeb, and benzimidazols. five field experiments were conducted to evaluate the efficacy of three strobilurins, azoxystrobin, pyraclostrobin and trifloxystrobin, to control red spot (during the 2004/2005, 2005/2006 and 2006/2007 crop seasons) and citrus black spot (in the 2007/2008 and 2008/2009 seasons) in lemon fruits in tucumán. one or two applications of strobilurins were made with copper oxychloride, in a program of four or five copper applications, every thirty days from petal fall. treatments with copper oxychloride, alone or mixed with mancozeb, were used as chemical controls. the most effective treatments were those that included one or two strobilurin applications, without differences between them. they outdid copper treatments, equaling or surpassing copper-mancozeb mixture. these results demonstrated the efficacy of strobilurins to control both black spot and red spot in lemon.
Eficacia de tres estrobilurinas para el control de mancha rojiza (Guignardia mangiferae) y mancha negra (Guignardia citricarpa) en frutos de limón, en Tucumán, República Argentina Efficiency of three strobilurins to control reddish spot (Guignardia mangiferae) and black spot (Guignardia citricarpa) in lemon fruits in Tucumán, Argentina
Gabriela M. Fogliata,M. Lorena Muoz,Alejandro A. Rojas,L. Daniel Ploper
Revista Industrial y Agrícola de Tucumán , 2011,
Abstract: La Argentina lidera la producción e industrialización mundial de limón. Tucumán produce el 87% del total nacional, destinando 65% para su industrialización y 35% para su comercialización como fruta fresca, principalmente en exportaciones. Para ello, se requieren frutos de calidad y libres de enfermedades, especialmente de aquellas causadas por patógenos considerados cuarentenarios en los mercados de destino. En Tucumán, están presentes la mancha negra de los cítricos, causada por Guignardia citricarpa (Phyllosticta citricarpa), patógeno cuarentenario para importantes mercados consumidores, y en mayor prevalencia, la mancha rojiza o moteado, causada por G. mangiferae (P. capitalensis), hongo no cuarentenario. Ambas enfermedades se controlan con fungicidas cúpricos, estrobilurinas, mancozeb y bencimidazoles. Se realizaron cinco ensayos para evaluar la eficacia de tres estrobilurinas, azoxistrobina, pyraclostrobin y trifloxistrobin, para controlar mancha rojiza (campa as 2004/2005, 2005/2006 y 2006/2007) y mancha negra (2007/2008 y 2008/2009) en frutos de limón en Tucumán. Se realizaron una y dos aplicaciones de estrobilurinas con oxicloruro de cobre, en un esquema de cuatro y cinco aplicaciones de cúpricos, cada treinta días desde caída de pétalos. Se utilizaron tratamientos con oxicloruro de cobre solo o en mezcla con mancozeb, como testigos químicos. Se evaluó la incidencia de las enfermedades en julio y se calculó la eficacia de los tratamientos. Los más eficaces para controlar mancha negra y mancha rojiza fueron los que incluyeron una o dos aplicaciones de estrobilurinas, sin diferencias entre sí, superando al cúprico e igualando o superando a la mezcla cúprico-mancozeb. Estos resultados demostraron la eficacia de las estrobilurinas para controlar mancha negra y mancha rojiza en frutos de limón. Argentina leads lemon world production and industrialization. The province of Tucumán generates 87% of national production, processing 65% of this production in factories and commercializing 35% as fresh fruit, mainly for exports, which requires high quality, disease-free fruits. Two fungal species of Guignardia are present in Tucumán: one is G. citricarpa (Phyllosticta citricarpa) and the other is G. mangiferae (P. capitalensis). The former is the causal agent of citrus black spot, a quarantine pathogen for major consumer markets, and the latter is a cosmopolitan fungus which causes red spot in lemon in Tucumán. Both diseases are controlled with copper, strobilurins, mancozeb, and benzimidazols. Five field experiments were conducted to evaluate the efficacy o
Metacercarias de la familia Microphallidae (Trematoda: Digenea) en el anfípodo Hyale grandicornis en la costa de Maule, Chile Central
MUOZ,GABRIELA;
Parasitología latinoamericana , 2005, DOI: 10.4067/S0717-77122005000200011
Abstract: digeneans have complex life cycles with 2 reproductive phases and 2-3 hosts such as molluscs, crustaceans and vertebrates. despite numerous records of adult digeneans from many host species of chile, there are few records in invertebrates. the aim of this study is to provide information about juvenile phases of digeneans in the amphipod hyale grandicornis (kr?yer, 1845). ninety-eight amphipods were collected from intertidal pools at maule, central coast of chile. sixty-four percent of the amphipods were parasitized with 1-25 metacercariae/host individual. three types metacercariae were distinguished according their shape (spherical or ovalated) and size (between 200 to 375 μm legth). to identify them, the metacercariae were incubated and artificially opened. the morphology of juvenile digeneans of the 3 types of metacercariae corresponded to the family microphallidae. one type of metacercaria may belong to maritrematinae; the other two may belong to microphallinae. the definitive hosts for microphallidae are principally birds, although some species can be found in fishes, amphibians or mammals. in chile, there are no records of these digeneans in any group of hosts. in the coast of maule usually inhabit many bird species such as larus, fulica, and phalacrocorax genera, so that some of them could be definitive hosts of these digeneans
Diferencias en las historias de vida de dos especies de isópodos bopíridos (Isopoda: Epicaridea) que parasitan al nape Neotrypaea uncinata (Milne-Edwards, 1837) (Decapoda: Thalassinidea)
MUOZ,GABRIELA;
Revista chilena de historia natural , 2001, DOI: 10.4067/S0716-078X2001000400003
Abstract: on coastal habitats near concepción city, chile, there are two isopod species ione ovata shiino, 1964, and ionella agassizi bonnier, 1900 both occupying the gill chambers of the ghost shrimp neotrypaea uncinata (h. milne edwards, 1837). however, in i. ovata, the prevalence is smaller, there is a low frequency of coupled isopods in the same gill chamber, and is less host specific than i. agassizi. these observations suggest that both isopod species have different life histories. to improve the understanding of the causes of these differences some life history traits of isopods species (fecundity, egg size and reproductive investment and the capability of individual males isopods to survive in uninfested ghost shrimps) are examined and compared. ione agassizi has lower fecundity but larger eggs than i. ovata. however, there were neither differences in reproductive investment nor in relation to their body size between the two species. experimental infestation of ghost shrimps by males of both species of isopods showed that only males of i. ovata could remain on the hosts for a few weeks and metamorphose into females. it would be necessary to estimate survival of isopods during the total life cycle, in order to improve the interpretation of these results
Metacercarias de la familia Microphallidae (Trematoda: Digenea) en el anfípodo Hyale grandicornis en la costa de Maule, Chile Central METACERCARIAE OF THE FAMILY MICROPHALLIDAE (TREMATODA: DIGENEA) IN THE AMPHIPOD Hyale grandicornis FROM THE COAST OF MAULE, CENTRAL CHILE
GABRIELA MUOZ
Parasitología latinoamericana , 2005,
Abstract: Los digeneos presentan ciclos biológicos complejos con 2 fases reproductivas y varios hospedadores, como moluscos y crustáceos (hospedadores intermediarios) y vertebrados (hospedadores definitivos). A pesar de los numerosos registros de digeneos en fases adultas en distintas especies hospedadoras, hay muy pocos registros en invertebrados y ninguno en crustáceos. Con el fin de aportar información sobre alguna de la fases juveniles de digeneos, se revisaron 98 anfípodos Hyale grandicornis (Kr yer, 1845) recolectados desde pozas intermareales en la costa de Maule, Chile Central. De estos el 64,3 % albergaban entre 1 y 25 metacercarias por amfípodo. Se reconocieron 3 tipos de metacercarias de acuerdo a su forma (ovalada y esféricas) y tama o (entre 200 y 375 μm). Para identificarlas, las metacercarias fueron incubadas y eclosionadas artificialmente. La morfología de los digeneos juveniles corresponde a Microphallidae: un tipo correspondería a Maritrematinae, y los otros dos podrían corresponder a Microphallinae. Estos digeneos principalmente son parásitos de aves y algunos son de peces, anfibios o mamíferos, sin embargo no hay registros de estos parásitos en ningun vertebrado en Chile. Varias especies de aves como Larus, Fulica y Phalacrocorax que habitan comúnmente en las costas de Maule, podrían ser las hospedadoras definitivas de estos digeneos Digeneans have complex life cycles with 2 reproductive phases and 2-3 hosts such as molluscs, crustaceans and vertebrates. Despite numerous records of adult digeneans from many host species of Chile, there are few records in invertebrates. The aim of this study is to provide information about juvenile phases of digeneans in the amphipod Hyale grandicornis (Kr yer, 1845). Ninety-eight amphipods were collected from intertidal pools at Maule, central coast of Chile. Sixty-four percent of the amphipods were parasitized with 1-25 metacercariae/host individual. Three types metacercariae were distinguished according their shape (spherical or ovalated) and size (between 200 to 375 μm legth). To identify them, the metacercariae were incubated and artificially opened. The morphology of juvenile digeneans of the 3 types of metacercariae corresponded to the family Microphallidae. One type of metacercaria may belong to Maritrematinae; the other two may belong to Microphallinae. The definitive hosts for Microphallidae are principally birds, although some species can be found in fishes, amphibians or mammals. In Chile, there are no records of these digeneans in any group of hosts. In the Coast of Maule usually inhabit many bird
Cryptobia neghmei sp. n. (Protozoa: Kinetoplastida) in two species of flounder, Paralichthys spp. (Pisces: Paralichthydae) off Chile
KHAN,RASUL A.; LOBOS,VíCTOR; GARCíAS,FéLIX; MUOZ,GABRIELA; VALDEBENITO,VERóNICA; GEORGE-NASCIMENTO,MARIO;
Revista chilena de historia natural , 2001, DOI: 10.4067/S0716-078X2001000400004
Abstract: cryptobia neghmei sp.n. is described from the blood of two species of flounder, paralichthys microps and p. adspersus, inhabiting the chilean coast in the southern pacific ocean. flagellates were elongate, slender, with two flagella and a conspicuous undulating membrane. it was distinguished from previously described species on the basis of its unusual shape and dimensions. all of 97 flounder were infected upon examination. developmental stages of kinetoplastid protozoans, perhaps c. neghmei sp. n., were observed in some leeches glyptonotobdella sp. that were found attached to flounder, which probably represent a mode for transmission among piscine hosts
Manejo de la espasticidad en pacientes con lesión medular con infusión de baclofeno intratecal mediante bomba implantable
Chaná,Pedro; Barrientos,Nelson; Landerretche,Jean; Podestá,Antonio; Baabor,Marcos; Muoz,Gabriela; Alonso,María Teresa; Canales,Glenda;
Revista chilena de neuro-psiquiatría , 2001, DOI: 10.4067/S0717-92272001000200007
Abstract: this article presents three cases of severe medullar lesion following trauma, resulting in tetraplegia and severe spasticity, and evaluates the safety and efficacy of treatment with intrathecal baclofen. in order to evaluate the patients' reaction to intrathecal baclofen, they were tested with trial doses of baclofen via a spinal tap prior to implanting the pump. this treatment brought a significant reduction of rigidity and spasticity for more than eight hours in all three cases rated according to ashworth and penn spasm frequency scales. a programmable infusion pump with an intrathecal catheter for administration of baclofen was then implanted in all three patients. the patients underwent neurological checkups every three months. they all showed satisfactory clinical improvement with progressive adjustments to the baclofen doses. no serious complications have been observed
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