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Search Results: 1 - 10 of 7228 matches for " Ayala Guillermo "
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Confidencialidad o secreto empresarial en el trámite de registros sanitarios
Guillermo Vargas Ayala
Contexto , 2001,
Mass of the rho^0 meson in ultra-relativistic heavy-ion collision
Alejandro Ayala,Jesus Guillermo Contreras,J. Magnin
Physics , 2004, DOI: 10.1016/j.physletb.2004.10.032
Abstract: We study the behavior of the rho vector mass in the context of the almost baryon-free environment of an ultra-relativistic heavy-ion collision. We show that rho scattering within the hadronic phase of the collision leads to a temperature dependent, decrease of its intrinsic mass at rest, compared to the value in vacuum. The main contributions arise from s-channel scattering with pions through the formation of a1 resonances as well as with nucleons through the formation of even parity, spin 3/2 [N(1720)] and 5/2 [Delta(1905)] nucleon resonances. We show that it is possible to achieve a shift in the intrinsic rho^0 mass of order - 40 MeV, when including the contributions of all the relevant mesons and baryons that take part in the scattering, for temperatures between chemical and kinetic freeze-out.
Predicting recovery at home after Ambulatory Surgery
Juan Vi?oles, Maía V Ibá?ez, Guillermo Ayala
BMC Health Services Research , 2011, DOI: 10.1186/1472-6963-11-269
Abstract: The status of a discharged patient is predicted during the first 48 hours after discharge by using variables routinely used in Ambulatory Surgery. The models fitted will provide the physician with an insight into the post-discharge progress. These models will provide valuable information to assist in educating the patient and their carers about what to expect after discharge as well as to improve their overall level of satisfaction.A total of 922 patients from the Ambulatory Surgery Unit of the Dr. Peset University Hospital (Valencia, Spain) were selected for this study. Their post-discharge status was evaluated through a phone questionnaire. We pretend to predict four variables which were self-reported via phone interviews with the discharged patient: sleep, pain, oral tolerance of fluid/food and bleeding status. A fifth variable called phone score will be built as the sum of these four ordinal variables. The number of phone interviews varies between patients, depending on the evolution. The proportional odds model was used. The predictors were age, sex, ASA status, surgical time, discharge time, type of anaesthesia, surgical specialty and ambulatory surgical incapacity (ASI). This last variable reflects, before the operation, the state of incapacity and severity of symptoms in the discharged patient.Age, ambulatory surgical incapacity and the surgical specialty are significant to explain the level of pain at the first call. For the first two phone calls, ambulatory surgical incapacity is significant as a predictor for all responses except for sleep at the first call.The variable ambulatory surgical incapacity proved to be a good predictor of the patient's status at home. These predictions could be used to assist in educating patients and their carers about what to expect after discharge, as well as to improve their overall level of satisfaction.Ambulatory Surgery (AS) is a routine clinical practice. In recent years, more complex operations have been included in am
Embarazo adolescente en el noroeste de México: entre la tradición y la modernidad
Nú?ez Noriega, Guillermo;Ayala Valenzuela, Deisy Judith;
Culturales , 2012,
Abstract: we present the results of a research aimed to understand the conceptions, values, and attitudes about teen pregnancy, as well as discriminatory practices against pregnant teen-agers, and their impact on their self-esteem and life. mexico. we conclude that discriminatory practices in this rural community are the results of a set of contradictory traditional and modern conceptions, values, attitudes and expectations the community has on teen-agers women, on their sexuality, their generation and their gender identity. finally, we think that this research illuminate the socio-cultural transformation of rural northern mexico nowadays.
Severe symptomatic hyponatremia during citalopram therapy - a case report
Guillermo Flores, Santiago Perez-Patrigeon, Carolina Cobos-Ayala, Jesus Vergara
BMC Nephrology , 2004, DOI: 10.1186/1471-2369-5-2
Abstract: A 61-year-old diabetic male was admitted to the hospital because of malaise, progressive confusion, and a tonic/clonic seizure two weeks after starting citalopram, 20 mg/day. On physical examination the patient was euvolemic and had no evidence of malignancy, cardiac, renal, hepatic, adrenal or thyroid disease. Laboratory tests results revealed hyponatremia, serum hypoosmolality, urine hyperosmolarity, and an elevated urine sodium concentration, leading to the diagnosis of inappropriate secretion of antidiuretic hormone. Citalopram was discontinued and fluid restriction was instituted. The patient was discharged after serum sodium increased from 124 mmol/L to 134 mmol/L. Two weeks after discharge the patient denied any new seizures, confusion or malaise. At that time his serum sodium was 135 mmol/L.Because the use of serotonin reuptake inhibitors is becoming more popular among elderly depressed patients the present paper and other reported cases emphasize the need of greater awareness of the development of this serious complication and suggest that sodium serum levels should be monitored closely in elderly patients during treatment with citalopram.Hyponatremia secondary to the syndrome of inappropriate secretion of antidiuretic hormone (SIADH) is an uncommon complication of treatment with the new class of antidepressant agents, the selective serotonin reuptake inhibitors (SSRIs) [1,2]. Estimations of the occurrence of hyponatremia during treatment with SSRIs range between 0.5% and 25%, and the risk of hyponatremia seems to be greatest during the first weeks of treatment with SSRI, in the elderly, in female patients and in patients with lower body weights [3,4]. However, severe consequences of hyponatremia caused SSRIs, such as tonic/clonic seizure, have not been reported. We describe the case of a 61-year-old male with tonic/clonic seizure caused by SSRI-induced hyponatremiaWe recently saw a 61-year-old male referred to us because of a 3-day history of malaise, prog
La proyección institucional del Valle de Aburrá al 2020
Agudelo Ayala,Sonia Alexandra; Medina Correa,Jorge Eusebio; álvarez García,Luis Guillermo;
Semestre Económico , 2010,
Abstract: the objective of this article is to make an institutional development analysis and its perspectives in aburra valley under the light of the endogenous development theory. parting form the institutional development concept revision, some association experiences between different regional agents as evidences over the institutional transformation advancements are reviewed. furthermore, in order to obtain evidences on future possibilities on institutional development, coherence between objectives and strategies of the metropolitan integral development plan (pidm): metropolis 2008-2020 is analyzed. the main conclusion that the analysis shows is that aburra?s valley territory has been object of local development incentives, as well as in cooperation practices, association and public and private agent concentration for the design of local strategies for regional development. never the less, the main weakness that is evidenced is that until the moment no structured or planned action for institutional development exists.
Preoperative factors influencing success in pterygium surgery
Torres-Gimeno Ana,Martínez-Costa Lucía,Ayala Guillermo
BMC Ophthalmology , 2012, DOI: 10.1186/1471-2415-12-38
Abstract: Background To identify preoperative, perioperative and postoperative risk factors that influence the success of pterygium surgery. Methods This is a prospective study of thirty-six patients with primary or recurrent pterygia. A detailed anamnesis and an ophthalmological examination were performed looking for the following factors: age, race, latitude and altitude of the main place of residence, hours of exposure to the sun, use of protective measures against UV-radiation, classification of pterygium, width of the pterygium at limbus, surgical technique (conjunctival autograft plus suturing versus tissue glue), graft alterations (misapposition, granuloma, haemorrhage, oedema, retraction or necrosis), and postoperative symptoms (foreign-body sensation, pain). The examinations were performed 2 and 7 days and 2, 6 and 12 months after surgery. In addition, recurrence was defined as any growth of conjunctiva into the cornea. Results A logistic regression and a survival analysis have been used to perform data analysis. A total number of 36 patients completed a one year follow-up. A total of 13 patients were born and lived in Spain, and 26 came from other countries, mostly Latin America. A total number of 8 males (no women) presented a recurrence, mainly between 2 and 6 months. The hours of sun exposure through their life was independently related to surgical success. Pterygia of less than 5 mm of base width showed a weak positive correlation with recurrence. None of the other factors considered were significantly related to recurrence. Conclusions Male gender and high sun exposure are strongly and independently related to surgical success after the removal of pterygia.
Contagion of Sovereign Debt in the Eurozone  [PDF]
Astrid Ayala, Szabolcs Blazsek
Theoretical Economics Letters (TEL) , 2014, DOI: 10.4236/tel.2014.41016

This study reports contagion and interdependence of quarterly debt to gross domestic product (GDP) among the member states of the Eurozone over the period 2000 Q4 to 2012 Q1. We test for contagion and interdependence in two steps. First, we define an indicator variable of increasing debt to GDP for each country during the period following the United States financial crisis, by using unit root tests incorporating structural changes and breaking trend regressions. Second, the indicator variable is included in the latent-factor panel data model to separate contagion and interdependence of debt to GDP among Eurozone member states. Results show significant and country-dependent contagion and interdependence effects of debt to GDP in the Eurozone.

Efecto de la condición corporal y la época del a?o sobre el ciclo estral, estro, desarrollo folicular y tasa ovulatoria en ovejas Pelibuey mantenidas en condiciones de trópico
Isla Herrera, Guillermo de la;Aké López, Jesús Ricardo;Ayala Burgos, Armín;González-Bulnes, Antonio;
Veterinaria México , 2010,
Abstract: the effect of season and body condition on the follicular development and the ovulation rate in pelibuey ewes were assessed. during the periods august-november and february-may, 38 ewes were distributed in two groups according to their body condition score: high body condition (hbc) and low body condition (lbc). estrus was detected twice a day and the ovaries were daily examined by ultrasonography through an interestral period. ovulation rate (or) was determined by ultrasonography and then confirmed by laparoscopy. an effect of body condition on the estrous length was found (29.6 ± 2.3 and 20.2 ± 2.5 h hbc and lbc, respectively), whereas there were no differences in the estrous cycle length and the maximum follicular diameter. the number of follicles > 4 mm and the ovulation rate were higher in ewes of high body condition and during the main reproductive season (1.8 vs 1.3 and 2.0 vs 1.4 or and follicles, respectively).
Efecto de la condición corporal y la época del a o sobre el ciclo estral, estro, desarrollo folicular y tasa ovulatoria en ovejas Pelibuey mantenidas en condiciones de trópico
Guillermo de la Isla Herrera,Jesús Ricardo Aké López,Armín Ayala Burgos,Antonio González-Bulnes
Veterinaria México , 2010,
Abstract: Se evaluó el efecto del periodo del a o y de la condición corporal sobre el desarrollo folicular y la tasa ovulatoria en ovejas de la raza Pelibuey. En los periodos de agosto-noviembre y ebrero-mayo, 38 ovejas fueron distribuidas en dos grupos de acuerdo con su condición corporal: condición corporal alta (CCA) y condición corporal baja (CCB). Se trabajó durante dos veces al día para detectar estros, además los ovarios de las ovejas fueron examinados diariamente mediante ultrasonografía durante un periodo interestral. La tasa ovulatoria se determinó con ultrasonografía y se confirmó por medio de laparoscopía. Se encontró efecto de la condición corporal sobre la duración del estro (29.6 ± 2.3 y 20.2 ± 2.5 h CCA y CCB, respectivamente), mientras que no se observaron diferencias en la duración del ciclo estral y el diámetro folicular máximo. La tasa ovulatoria y el número de folículos 4 mm fue mayor en las ovejas de CCA y en la época de mayor actividad reproductiva (1.8 vs 1.3 y 2.0 vs 1.4 TO y folículos, respectivamente).
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