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Search Results: 1 - 10 of 1485 matches for " Christiane;Villatoro "
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Distribución y determinantes sociodemográficos de la conducta suicida en México
Borges, Guilherme;Medina-Mora, Maria Elena;Orozco, Ricardo;Ouéda, Christiane;Villatoro, Jorge;Fleiz, Clara;
Salud mental , 2009,
Abstract: introduction mexico has seen constant increases in the rate of completed suicide in the last decades, especially among youth. the mexican population between 1 5-24 years of age is currently the most affected, with 28% of all suicides in 2007. in this context of increasing suicide mortality, the study of suicide-related behaviors, that is, suicidal ideation, plans, gestures and suicide attempts, has special relevance. all of these are immediate precursors to death by suicide and independent risk factors of subsequent suicide attempts and completed suicides. episodes that do not result in death, can lead to serious, long-term consequences in one's physical health, as well as being an important cause of psychological suffering on the part of the individual and his/her family. up until now, research in our country has emphasized the prevalence of lifetime suicidal behavior and its associated factors. however, the current (12-month) prevalences are indispensable in order to define the demographic profile and clinical needs, and to build risk profiles for immediate application by the clinics treating these individuals. objectives to report the prevalence and sociodemographic characteristics of suicide-related behaviors in the past 12 months in a nationally representative sample of respondents from the encuesta nacional de adicciones (ena) of 2008. methods cross-sectional prevalence study which obtained data from a nationally-representative sample of 22 966 individuals, between the ages of 12 and 65, during 2008, who answered the section on suicidal behaviors. the response rate was 77%. twelve-month prevalences of suicidality are reported according to different sociodemographic and economic factors. multiple logistic regression models for odds ratios and 95% confidence intervals, corrected for the study design, are reported. results we found the prevalence of any suicidal ideation to be 8.79% (ranging from 4.2 to 6.2%, depending on the question used), the prevalence of a s
A curious arithmetic of fractal dimension for polyadic Cantor sets
Francisco R. Villatoro
Mathematics , 2009,
Abstract: Fractal sets, by definition, are non-differentiable, however their dimension can be continuous, differentiable, and arithmetically manipulable as function of their construction parameters. A new arithmetic for fractal dimension of polyadic Cantor sets is introduced by means of properly defining operators for the addition, subtraction, multiplication, and division. The new operators have the usual properties of the corresponding operations with real numbers. The combination of an infinitesimal change of fractal dimension with these arithmetic operators allows the manipulation of fractal dimension with the tools of calculus.
Self-similar Radiation from Numerical Rosenau-Hyman Compactons
Francisco Rus,Francisco R. Villatoro
Physics , 2007, DOI: 10.1016/j.jcp.2007.07.024
Abstract: The numerical simulation of compactons, solitary waves with compact support, is characterized by the presence of spurious phenomena, as numerically-induced radiation, which is illustrated here using four numerical methods applied to the Rosenau-Hyman K(p,p) equation. Both forward and backward radiations are emitted from the compacton presenting a self-similar shape which has been illustrated graphically by the proper scaling. A grid refinement study shows that the amplitude of the radiations decreases as the grid size does, confirming its numerical origin. The front velocity and the amplitude of both radiations have been studied as a function of both the compacton and the numerical parameters. The amplitude of the radiations decreases exponentially in time, being characterized by a nearly constant scaling exponent. An ansatz for both the backward and forward radiations corresponding to a self-similar function characterized by the scaling exponent is suggested by the present numerical results.
Highly Active Antiretroviral Treatment (HAART) for the Prevention of HIV Mother to Child Transmission (PMTCT) at Roosevelt Hospital's Infectious Diseases Clinic in Guatemala: The Role of (LPV/r) Standard Dose  [PDF]
Carlos Mejia Villatoro, Maria Eugenia Luarte, Guillermo Villatoro Natareno, Julio Werner Juárez, Claudia Maria Rodríguez, Aura Bertila Gonzalez, Claudia Marleny Pérez, Marisol Martinez
World Journal of AIDS (WJA) , 2012, DOI: 10.4236/wja.2012.23034
Abstract: Introduction: The transmission of HIV from mother to child is reported from 30% to 40% without any intervention [1]. When all the measures for prevention are implemented, including treatment with HAART (Highly Active Antiretroviral Treatment), the rate of infection can be reduced between 1% and 2% [2]. In Guatemala, the statistics demonstrated an estimated of 20,000 women living with HIV virus infection during the period of 2009. In this scenario, mother to child HIV transmission is an important public health fact. In preliminary reports, there is strong evidence of the impact of preventing mother to child transmission with Lopinavir/Ritonavir in Guatemala is showing a small incidence of new HIV infections and good tolerance [3,4]. Objective: To evaluate the effect of HAART with Lopinavir/Ritonavir on the prevention of mother to child transmission (PMCT) in HIV-positive pregnant women at Roosevelt Hospital in Guatemala City. Methods: A retrospective cohort analysis study. The detection of pregnant HIV positive women and the follow up period was from January 2003 to December 2009, and a total of 219 women completed the follow up time. The HIV diagnosis and follow up for the child was made with molecular testing and antibody testing up to 18 months of age or until testing was negative. Adherence was quantified by pill counts. The interventions where offered to all the women in the cohort. Results: Regarding the pregnancy outcome, the study cohort gave a rate of abortion of 2.3%; 10.6% of preterm births and 79.6% normal births. Of the 202/219 children born, there was a 1.4% rate of transmission (n = 3). The three infected children were born from mothers with high basal viral loads (xxx C/mL or higher). There were no serious adverse events related to antiretroviral therapy with Lopinavir/Ritonavir, with a 6.1% of non serious adverse events, most of them of gastrointestinal type, and anemia. Conclusions: The rate of transmission of HIV from mother to child was low in this population (1.4%), comparable to findings from similar studies [4]. Lopinavir/Ritonavir was well tolerated in this cohort and no serious adverse events in this population were reported.
Collet-Sicard syndrome as an initial presentation of prostate cancer: a case report
Rosa Villatoro, Carlos Romero, Antonio Rueda
Journal of Medical Case Reports , 2011, DOI: 10.1186/1752-1947-5-315
Abstract: We present the case of a 70-year-old Caucasian man with a three-week history of headache and maxillary pain on the right side together with paresis of the low cranial nerves. This study was carried out with a computed tomography (CT) scan of the larynx and neck and MRI, which revealed a bone lesion at the base of the skull affecting the right occipital condyle and part of the right side of the basilar bone. On the basis of differential diagnosis, a fibrous dysplasia, Paget's disease or metastasis was considered. Finally, and after other studies were performed, a diagnosis of bone metastasis secondary to prostate cancer was established.We think that this case is curious because it involved an initial presentation of metastatic prostate cancer. It is important this should be considered in the differential diagnosis when a patient with unusual clinical findings is first seen in view of the fact that first-line hormonal treatment may control the disease for months or years.Collet-Sicard syndrome is caused by lesions at the base of the skull affecting the lower cranial nerves, which produces dysphonia, displacement of the palate, and atony of the trapezius muscle and sternocleidomastoid, as well as anesthesia of the larynx, pharynx and soft palate. It is associated with various etiologies of tumoral and other origins. The differential diagnosis is important. Among the non-tumoral factors causing Collet-Sicard syndrome, the most common are traumatic events (fractures at the base of the skull, aneurisms, and so on), inflammatory processes (osteomyelitis, Paget's disease, and so on) or other alterations such as diabetes mellitus or porphyrias [1]. However, considering a potential tumor cause in the differential diagnosis is important.Collet-Sicard syndrome may be diagnosed based on clinical history, a physical examination or imaging studies such as computed tomography (CT) and MRI scans [1]. The site most frequently affected is the petrous apex, although the external audito
Alden, Chris, China en áfrica. Barcelona, Intermón Oxfam, 2008, 137 pp.
Francisco de Paula Villatoro Sánchez
Historia Actual Online , 2010,
Abstract:
Sierra, Luis Antonio, Irlanda. Una nación en busca de su identidad. Madrid, Sílex, 2009, 367 pp.
Francisco de Paula Villatoro Sánchez
Historia Actual Online , 2010,
Abstract:
Service, Robert, Historia de Rusia en el siglo XX. Barcelona, Crítica, 2010, 586 pp.
Francisco de Paula Villatoro Sánchez
Historia Actual Online , 2011,
Abstract:
Hernández, F. Xavier; Rubio, Xavier, Breve historia de la Guerra Moderna. Madrid, Ediciones Nowtilus, 2010, 253 pp.
Francisco de Paula Villatoro Sánchez
Historia Actual Online , 2011,
Abstract:
Nú ez Florencio, Rafael, El peso del pesimismo. Del 98 al desenga o. Madrid, Marcial Pons, 2010, 473 pp.
Francisco de Paula Villatoro Sánchez
Historia Actual Online , 2011,
Abstract:
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