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Search Results: 1 - 10 of 2545 matches for " Soila Maribel Gaxiola Camacho "
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Frequency and Clinical Epidemiology of Canine Monocytic Ehrlichiosis in Dogs Infested with Ticks from Sinaloa, Mexico
Carolina Guadalupe Sosa-Gutierrez,Maria Teresa Quintero Martinez,Soila Maribel Gaxiola Camacho,Silvia Cota Guajardo,Maria D. Esteve-Gassent,María-Guadalupe Gordillo-Pérez
Journal of Veterinary Medicine , 2013, DOI: 10.1155/2013/797019
Abstract: Ehrlichia canis is a rickettsial intracellular obligate bacterial pathogen and agent of canine monocytic ehrlichiosis. The prevalence of this disease in veterinary medicine can vary depending on the diagnostic method used and the geographic location. One hundred and fifty-two canine blood samples from six veterinary clinics and two shelters from Sinaloa State (Mexico) were analyzed in this study. All animals were suspected of having Canine Monocytic Ehrlichiosis (CME). The diagnostic methods used were the ELISA (Snap4Dx, IDEXX) together with blood smear and platelet count. From all dogs blood samples analyzed, 74.3% were positive to E. canis by ELISA and 40.1% were positive by blood smear. The sensitivity and specificity observed in the ELISA test were 78.8% and 86.7%. In addition, thrombocytopenia was presented in 87.6% of positive dogs. The predominant clinical manifestations observed were fever, anorexia, depression, lethargy, and petechiae. Consequently, this is the first report in which the morulae were visualized in the blood samples, and E. canis-specific antibodies were detected in dogs from Sinaloa, Northwest of Mexico. 1. Introduction Ehrlichia canis is the causative agent of canine monocytic ehrlichiosis (CME). Moreover, CME is an emerging disease in veterinary medicine, and E. canis has been considered in the last decade as a potential zoonotic pathogen [1, 2]. It is a worldwide disease transmitted by a tick bite. The competent vector for its transmission is the Ixodidae ticks Rhipicephalus sanguineus and Dermacentor variabilis [3]. In dogs, the CME is a multiphase disorder that progresses in three stages: acute, subclinical, and chronic. Each phase is characterized by several clinical and hematologic abnormalities. Thrombocytopenia is a common finding in E. canis infected dogs and many clinicians tend to use it as an indication for antibiotic treatment, and it is observed in 84% of the cases and its severity varies in the different disease phases [4]. During the subclinical stage a moderate thrombocytopenia is observed, while the chronic phase is characterized by severe leukopenia and anemia. In this stage dogs show other complications such as hypocellular marrow, suppressed splenic sequestration, decreased life of platelets, and an increase of circulating migration-factor platelet inhibitor [3, 4]. The relationship between the magnitude of thrombocytopenia and prevalence of E. canis has been established in countries such as Brazil in 2004 where 84.1% of infected dogs showed thrombocytopenia [3]. Taken together, more data is necessary to
Comparison of efficiency and reproductive aptitude indexes between a reference and field strains of the cattle tick Rhipicephalus (Boophilus) microplus, in Sinaloa, Mexico
Gaxiola-Camacho, Soila;García-Vázquez, Zeferino;Cruz-Vázquez, Carlos;Portillo-Loera, Jesus;Vázquez-Peláez, Carlos;Quintero-Martínez, Maria Teresa;Rosario-Cruz, Rodrigo;
Revista Brasileira de Parasitologia Veterinária , 2009, DOI: 10.4322/rbpv.01804002
Abstract: the objective of this work was to study the reproductive behavior of two strains of r. (b.) microplus, one wild-caught (native) and one reference strain (media joya) for two years, measuring the reproductive efficiency index (rei) and reproductive aptitude index (rai). engorged ticks from each strain were collected monthly from february 2002 to february 2004. these were weighed and kept in the laboratory until egg-laying. oogenic masses were individually weighed and incubated until larvae emergence. rei and rai were calculated from each sample, grouping ticks by weight in 100 mg range classes. an analysis of variance and duncan's multiple rank tests were carried out on the data (p < 0.05). pearson's correlation coefficients were estimated (p < 0.01) in order to determine the relationship between engorgement weight and the weight and number of laid and hatched eggs. the native strain showed a higher engorgement weight than media joya strain. in both strains rei and rai were similar in all weight classes; with a quadratic tendency in media joya and linear-quadratic in the native strain (p < 0.05). significant differences where observed when rei and rai of both strains were compared along the duration of the study (p < 0.01) with the native strain performing better in both indexes, including better performance during the dry season. all parameters studied showed highly significant correlation; eggs laid and eggs hatched were notably highly correlated, 0.94 and 0.91, for media joya strain and native strain respectively.
Passion at the threshold: Doctor Glas the flaneur in the films of Rune Carlstén and Mai Zetterling
Tytti Soila
Journal of Aesthetics & Culture , 2010, DOI: 10.3402/jac.v1i0.5227
Abstract: This article explores tropes of modernity in film adaptations of the 1905 novel Doctor Glas written by the Swedish author Hjalmar S derberg. Drawing on Walter Benjamin and Miriam Hansen among others, the article attempts to show that certain expressive categories perceived as mutually exclusive by the contemporary audiences, in fact co-operate in order to constitute certain “points of impossibility” in the narrative and visual flow, where modern (gender) identities mutate and manifest themselves.
Germinación y sobrevivencia de esclerocios de (Phymatotrichopsis omnivora) en respuesta a NaOCl y suelo con glucosa
Samaniego Gaxiola, José Alfredo;
Agricultura técnica en México , 2008,
Abstract: sclerotia of phymatotrichopsis omnivora can survive for 20 years in the soil; however, if sclerotia are exposed to chemical agents or microbial competition in soil, survival is reduced to few weeks. the objective of this research was to study the germination and survival of p. omnivore sclerotia, treated first with a solution of naocl and then exposed to microbiota competition in soil supplemented with dextrose. the experiments were carried out at 'la laguna' research station of the national research institute for forestry, agriculture and livestock under a completely random factorial design. sclerotia were immersed in 200, 500 and 3 000 ppm naocl solutions during 0.3, 1, 8, and 72 h. at two temperatures, 15-20 and 28 °c, afterwards were placed in soil added with 0.0, 0.125, 0.25 and 0.5 mg g-1 of dextrose during 14 days under saturated conditions at 28 °c. sclerotia immersed into a 3 000 ppm solution of naocl during 20 min showed 90% germination in sterile sand and pda and only 15% in non-sterile sand and pda. when sclerotia were germinated before being immersed in naocl, viability was 100% in all substrates utilized. survival of sclerotia decreased with the increase in the time of immersion, concentration of naocl, and concentration of dextrose added to the soil. sclerotia immersed during one hour or more in 1 000 ppm or higher of naocl solution and placed in soil with 0.25 or 0.5 mg g-1 of added dextrose showed a maximum survival of 20%. sclerotia survival was high in some treatments at 15-20 °c than in similar treatments at 28 °c, possible due to a protective effect of naocl on sclerotia exposed to soil microbiota enhanced by added dextrose.
A triple junction in the Gulf of Mexico: Implications for deep petroleum exploration
Jaime Rueda-Gaxiola
Geofísica internacional , 2004,
Abstract: Mesozoic redbed and salt sequences have recently been dated using a palynostratigraphical method developed at the Mexican Petroleum Institute (IMP) since 1975. They represent the early Mesozoic marine transgression which formed the petroleum systems. The information from 1969 to1993 for the Rhaeto-Liassic redbed Los San Pedros Allogroup and Huayacocotla Group (Huayacocotla-El Alamar Basin), Middle Jurassic La Joya Formation (Chihuahua Sabinas Sub-basin), Middle Jurassic Rosario and Cahuasas formations (Tampico-Misantla Sub-basin) and Middle Jurassic Todos Santos Formation (Veracruz and Southeastern sub-basins) and Middle Jurassic salt units (Southeastern sub-basins) and the caprock of the Challenger Knoll, drilled in the Gulf of Mexico, are reviewed. After these data an unconformity between the igneous-metamorphic basement and the Middle Jurassic redbeds in some sub-basins of the Gulf of Mexico, and between the Liassic sedimentary rocks and the Middle Jurassic redbeds in the Huayacocotla-El Alamar, Tlaxiaco and Huamuxtitlán basins is proposed. The Triple Junction Model includes three different periods: (1) the formation of one or two Rhaeto-Early Liassic wrench or shear basins (Huayacocotla-El Alamar); (2) formation of the Tampico-Misantla Sub-basin during Late Liassic, and (3), the origin of the Gulf of Mexico Basin and the Chihuahua-Sabinas, Veracruz and Southeastern sub-basins during the Early Middle Jurassic. A triple junction system allowed the northwestward displacement of the Texas-Louisiana Block and the western region of Mexico away from the stable Chiapas-Yucatán Block along the Vancouver-Bahamas and Texas-Sabinas alignments and the Pico de Orizaba-Laguna Inferior Megashear.From geochemical data oil and gas-producing provinces are predicted in continuation of the Chihuahua-Sabinas, Tampico-Misantla and southeastern sub-basins.
Application of glauconite and fossil palynomorphs in reconstructing the Liassic paleogeography just before the opening of the Gulf of Mexico
J. Rueda –Gaxiola
Iranian Journal of Earth Sciences , 2010,
Abstract: Red beds, conglomerates and salt were considered azoic and problematic rocks, but Paleopalynology and Inorganic Geochemistry proved to be useful for placing them in time and space. In the early last century, in Mexican NE region, only three Mesozoic red bed units were differentiated, dated as Late Triassic to Late Jurassic. It was important tratigraphically to place them properly as they were considered to be the basement of the marine petroliferous sequence in some Mexican Gulf of Mexico sub-basins. Palynostratigraphic studies since 1969, and X- ray analyses since 1989 allowed to place, in time and space, the Cahuasas, Huizachal, La Joya, and La Boca red bed units, outcropping at the Huizachal-Peregrina and Huayacocotla anticlinoria and, recently, the Rosario, Conglomerado-Prieto and Cuarcítica-Cualac units at the Tlaxiaco Anticlinorium. For reconstructing the paleogeographic distribution of these red beds, their correlation permitted to place the Liassic units as deposited in a half-graben connected to an Epicontinental Sinemurian Sea. This sea, during the Middle Jurassic, was invaded by the Tethysian waters through the Hispanic Corridor formed across the new Gulf of Mexico, which originated by a hot spot with a triple junction origin.
Application of glauconite and fossil palynomorphs in reconstructing the Liassic paleogeography just before the opening of the Gulf of Mexico (Part II)
Jaime Rueda ?Gaxiola
Iranian Journal of Earth Sciences , 2011,
Abstract: In (Part I), it was stated that red beds, conglomerates and salt were considered azoic and problematic rocks, but Paleopalynology and Inorganic Geochemistry proved to be useful for placing them in time and space. In the early last century, in Mexican NE region, only three Mesozoic red bed units were differentiated, dated as Late Triassic to Late Jurassic. It was important stratigraphically to place them properly as they were considered to be the basement of the marine petroliferous sequence in some Mexican Gulf of Mexico sub-basins. Palynostratigraphic studies since 1969, and X- ray analyses since 1989 allowed to place, in time and space, the Cahuasas, Huizachal, La Joya, and La Boca red bed units, outcropping at the Huizachal-Peregrina and Huayacocotla anticlinoria and, recently, the Rosario, Conglomerado-Prieto and Cuarcítica-Cualac units at the Tlaxiaco Anticlinorium. In this (Part II) it is described the method used for reconstructing the paleogeographic distribution of these red beds. Their correlation permitted to place the Liassic units as deposited in a half- graben connected to an Epicontinental Sinemurian Sea. This sea, during the Middle Jurassic, was invaded by the Tethysian waters through the Hispanic Corridor formed across the new Gulf of Mexico, which was originated by a hot spot with a triple junction.
Hermenéutica analógica, filosofía y derechos humanos. Entrevista con Mauricio Beuchot
Napoleón Conde Gaxiola
Andamios , 2007,
Abstract:
The Black-Scholes equation and its relation with semigroups of operators
O. Gonzalez-Gaxiola
Applied Mathematical Sciences , 2013,
Abstract: This paper gives a connection between the theory of semigroups ofoperators (functional analysis) and mathematical finance through theBlack-Scholes equation. Besides using this theory obtain the solution ofthis equation via the infinitesimal generator of a group of evolution.
Algunas Consideraciones Dialécticas y Hermeneutizantes sobre la Epistemología y la Importancia de la Tradición em el Pensamiento Turístico
Napoleon Conde Gaxiola
Revista Turismo em Análise , 2010,
Abstract:
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