Fijación de la no-unión del proceso ancóneo mediante tornillo. Estudio retrospectivo en 13 casos clínicos

En este estudio se hace una evaluación retrospectiva de la técnica de fijación con tornillo del proceso ancóneo no unificado en una serie de 13 casos. Los resultados de la cirugía (con un seguimiento de 2 años de media) fueron considerados "excelentes" o "buenos" en 12 o 13 casos, y todos los animales mejoraron el grado de cojera. En el 92% de los codos se consiguió una unión ósea completa del proceso ancóneo, y en el 70%, un estancamiento de la artrosis. La tasa de complicaciones fue del 15%, todas ellas de carácter muy leve.

Low-frequency phonons in carbon nanotubes: A continuum approach

7 págs.; 6 figs.; 2 apéndices ; PACS number s : 68.65. k, 63.22. mLow-frequency phonons in carbon nanotubes are studied using a continuum model which allows consideration of an arbitrary wall thickness for the nanotube. Phonon dispersion relations are calculated for two archetypal examples of carbon nanotubes, the (5,5) and (10,10) tubes. The dependence of the radial breathing mode frequency at Γ on the inverse nanotube diameter is verified within this model; furthermore, we prove it to hold for all pure modes within the thin-shell approximation. The effect of the nanotube wall thickness on the eigenfrequencies of carbon nanotubes is also analyzed, and a criterion to fix this parameter within a continuum model is presented. We compare our results to other continuum approaches, and show that by choosing the appropriate parameters, excellent agreement with recent first-principles calculations can be achieved. © 2006 The American Physical Society.This work has been partly supported by the Spanish DGES Grant No. MAT 2002-04540-C05-03 and the Vicerrectorado de Relaciones Internacionales UCLM.Peer Reviewe

A Phenomenological Study: The Experiences of Quare Males Who Attend and/or Attended Historically Black Colleges or Universities (HBCUs)

This two-year phenomenological study explored the lived experiences of five Black gay (Quare) males who attended three different Historically Black Colleges and Universities (HBCUs) in the South. This research project sought to gain an understanding of the experiences of five Quare males who attend or attended an HBCU and, contribute to the broader body of research that examines sexual minorities who intersection of identities were race, gender, and sexuality. By using a qualitative research approach to better understand human experiences, perceptions, motivations, intentions, and behaviors of Quare males, the study used Queer of Color theory with tenets from Queer theory and Black feminism to identify literature that addresses the constant shifting of gender, sexual identity, and issues of race. Data was collected through 60-minute semi-structured interviews with researcher reflections for each interview in the following areas: a biographical history, curriculum, and photo/artifact elicitation. Additionally, official school-related documents and materials pertaining to the experiences of the five Quare males, such as information from school websites, student handbooks, and general curricular maps, were used for analysis. Using intersectionality as an analytical tool, the data analyzed was open coded to arrive at deductive codes and then organized the codes to identify salient themes such as maleness, masculinity, hiding in plain sight and trauma. Results from this study suggests that messages from family, community, and K-12 academic institutions impact the participants’ lived experiences prior to attending college and those messages are reified through formal and informal curricula while attending their HBCUs. Specifically, this study drew attention to the idea that messages about maleness and masculinity have influenced the Quare males’ ideologies around race, gender, and sexuality and, as a result, they have learned to hide in plain sight and navigate heteronormative spaces to gain access and privilege while on their perspective HBCU campuses. This study significant contributes to the limited research on Quare males at HBCUs, explores how social and academic institutions such family, community/ church and K-12 schools experiences influence their experiences prior to and during their time at HBCUs and offers recommendations to HBCUs such as restructuring curricula and teacher education programs and Quaring Racial Literacy while also suggesting to multiple stakeholders (Families, Church, etc.) ways in which familial and community engagement could meet the needs of an continually marginalized and underserved population