28 research outputs found
Percentage of Lateral Pterygoid Muscle Inserted in the Disc of Human Temporomandibular Joint
No full textGaldames, IS (reprint author), Univ Talca, Ave Lircay S-N Oficina 104, Talca, Chile. Contreras, JT (Tapia Contreras, Jorge); Cantin, M (Cantin, Mario); Zavando, D (Zavando, Daniela); Galdames, IS (Suazu Galdames, Ivan)Insertion of the upper head of the lateral pterygoid (UHLP) in the temporomandibular joint disc (TMJ) has been linked to anterior displacement of the disc and temporomandibular disfunction. The aim of this study was to determine in human adults, the percentage of muscle fiber in the upper head of the lateral pterygoid muscle inserted in the articular disc. A systematic review of the literature was designed beginning with articles published in Medline, Lilacs and Scielo data bases between the years 1990 and 2010. Key words "Lateral Pterygoid Muscle" and Pterygoid Lateral Muscle" were used, and the term MeSH "Pterygoid Muscle" with Boolean OR "Lateral Ptrerygoid Muscle" AND "Insertion" and the free terms "Pterygoid Lateral Muscle Disc Articular" and "Pterygoid lateral Muscle Meniscus". Of the 156 articles obtained and analyzed, 18 articles meeting eligibility criteria were selected. Based on those articles the percentage of insertion of the CSPL in the TMJ disc was evaluated, each one was subsequently assigned a level of evidence according to OCEBM Oxford Centre Evidence Based Medicine. Only four articles answered the research inquiry, three studies were histological and one used imaging techniques with cross section slices with an adequate evidence level (1B). However, results differed with insertion percentages from 2% to 69.8% being reported in the superior head of the lateral pterygoid muscle in the articular disc
Evaluation of Facial Asymmetry Using Soft-Tissue Thickness for Forensic Purposes
No full textMunoz, SRT (reprint author), Univ Talca, Dept Ciencias Basicas Biomed, Ave Lircay S-N, Talca, Chile. Munoz, SRT (Torres Munoz, Sebastian Rene); Galdames, IS (Suazo Galdames, Ivan)Facial reconstruction for forensic sculpture aims to reproduce the face of an individual for identification. This technique is based on the knowledge of the facial soft-tissue thickness, which differs in terms of sexual dimorphism. However, in terms of asymmetry, the real significance of the soft-tissue thickness on both sides of the face is not considered to make an approximation of the morphofacial characteristics of an individual. This study analyzed the facial tissue thickness of 32 adult Spanish corpses of both sexes in six bilateral cephalometric landmarks through the needle puncture technique, comparing the measurements of right and left sides. No significant differences were found when comparing the soft-tissue thickness on the right and left sides in the total sample (p <0.05), or when comparing the values in men and women (p<0.05). The facial morphology is created by internal and external forces exerted on the soft tissue and influenced by their evolutionary development in vivo, where asymmetry parameters have a genetic and muscular determination, which in normal individuals do not represent a significant difference in the process of reconstruction of forensic sculpture, and can reliably standardize the entire information of facial thickness to the right or left side of the face
Perfil Inmunohistoquímico de los Tipos de Fibras en el Músculo Vocal Humano
No full textGaldames, IS (reprint author), Univ Talca, Escuela Fonoaudiol, Ave Lircay S-N,Oficina 104, Talca, Chile.he vocal muscle is a striated muscle with important functions in the emission of laryngeal sound and physiology of the voice. Therefore the knowledge of its constitution is the basis for the prevention and management of voice disorders. We used 10 samples from the middle third of vocal muscles obtained from autopsies of 6 male and 4 female subjects aged between 36 and 71 years. The samples were analyzed with BA-F8 monoclonal antibody to slow type I fibers, and antimyosin HC monoclonal antibody and antimyosin fast clone MY-32 antibody for types IIA, IIB, IIX, and neonatal fibers. We determined the distribution of the muscle fiber types and morphometric characteristics, evaluating the differences by sex and age group. The human vocal muscle presented a heterogeneous formation with a predominance of type II fibers at 51.99%, while type I fibers reached 48.01%; this difference was significant (p0.05). In conclusion, the human vocal muscle the fibers were predominantly type II fast
Sex Determination by Observation of Barr Body in Teeth Subjected to High Temperatures
No full textGaldames, IS (reprint author), Univ Talca, Ave Lircay S-N Oficina 104, Valparaiso, Chile.Sex determination is one of the keys in the identification process. A useful histological method for sex determination is the observation of Barr chromatin or Barr body. This study determines the effect of high temperatures on the diagnostic performance of the Barr chromatin observation on teeth. Were used 50 healthy teeth from 25 male and 25 female individuals aged between 14 and 44 years. The teeth were divided into 5 groups (each group with 5 female and 5 male teeth) and were exposed to controlled temperatures of 200, 400, 600, 800, and 1000 degrees C for 5 minutes. The coronal pulp was obtained and the tissue was processed and stained with hematoxylin-eosin. Four histological slides of male and 4 of female individuals were randomly selected, for each temperature level, which were observed by conventional microscopy at 100X magnification, each showing 50 cells per plate. The presence of 1 cell with visible sex chromatin was considered positive for females. It was only possible to evaluate the samples from groups subjected to 200 and 400 degrees C. In the groups analyzed, the test showed 100% accuracy. The average number of cells found to be positive Barr chromatin was 15 (SD 3.9) at 200 degrees C and 11 (SD 2.8) at 400 degrees C. Hence, it was possible to detect the sex at these temperatures by observing chromatin of the Barr body in dental pulp
Labio leporino en la terminología biomédica
No full textCantin, M (reprint author), Univ Talca, Dept Ciencias Basicas & Biomed, Talca, Chile
Eagle syndrome or Stylohyoid syndrome?
No full textCantin, LM (reprint author), Univ Talca, Dept Ciencias Basicas & Biomed, Talca, Chile
Relato de uma experiência inovadora de ensino religioso no CEPARL
No full textReflect upon the use of ICT as a means of constructing knowledge in High School (HS) at Colégio Estadual Professora Alcina Rodrigues Lima, a pioneer school in the project Ensino Médio Inovador (Innovative High School), by means of the results of the Religious Studies (RS) project “Visiting the historic, touristic and religious sites in Brazil”, started in 2010. From the data collected in the questionnaires, the use and behavior vis a vis the ICT in the Innovative High School and Traditional High School. The analysis was made under the light of the theories of scholars in the area of ICT such as Moram, Ferres, Prado and in the area of learning: Piaget, Vigotsky, Moura. Although the results of students and teachers who took part in the RS project were positive, and some of the students have shown their insertion in the world of educative technologies, one can also perceive that some of the students still find it difficult to integrate this world of ICT, want and need help; others wish to use such technologies, but they have no means for that and face the problems of the poor quality of the school‟s technological system and the lack of supportive staff at the CT lab.Reflete sobre o uso das TIC como meio construtivo de conhecimentos no Ensino Médio (EM) no Colégio Estadual Professora Alcina Rodrigues Lima, escola piloto do Ensino Médio Inovador (EMI), através dos resultados do projeto de Ensino Religioso (ER) “Conhecendo os lugares históricos, turísticos e religiosos do Brasil”, iniciado em 2010. Analisou-se com os dados dos questionários, aplicados aos alunos, a utilização e comportamento frente às TIC no Ensino Médio Inovador e no Ensino Médio Tradicional. A análise realizou-se à luz do referencial teórico de alguns estudiosos da área das TIC como Moram, Ferres, Prado e da área da aprendizagem: Vygotsky e Moura. Apesar do resultado dos alunos que participaram do projeto do Ensino Religioso ser positivo e de alguns alunos mostrarem a sua inserção no mundo das tecnologias com fim educativo, percebe-se, também, que alguns jovens ainda estão com dificuldades de integrar-se neste mundo das TIC, desejam e buscam ajuda; outros desejam usar as tecnologias, porém não têm os meios e deparam-se com os problemas da qualidade do sistema tecnológico da Escola e com a falta de funcionários no laboratório para seu uso
An Efficient Probabilistic Algorithm to Detect Periodic Patterns in Spatio-Temporal Datasets
No full textAuthor Contributions: Conceptualization, C.G.-S.; methodology, C.G.-S.; software, C.G.-S.; validation, C.G.-S., P.G. and M.A.P.; formal analysis, C.G.-S.; investigation, C.G.-S., P.G. and M.A.P.; data curation, C.G.-S.; writing—original draft preparation, C.G.-S., P.G. and M.A.P.; writing—review and editing, M.A.P.; funding acquisition, C.G.-S. and M.A.P. All authors have read and agreed to the published version of the manuscript.Peer reviewe
Este nuevo método de enseñanza no tiene paralelo en la historia de la educación”: presencia, tensiones y versiones del Silabario Hispano Americano (1945) de Adrián Dufflocq Galdames
No full textThe Silabario Hispano Americano, written by Adrián Dufflocq, is one of the texts with the most significant presence in the Chilean collective memory. This syllabary has had almost a hundred editions since it first circulated in Chile in the mid-1940s. However, this syllabary has not yet been the subject of historiographical analysis despite its importance. Therefore, this article analyzes the Silabario Hispano Americano from a historical perspective. We delve into the context of its creation, the tensions generated by its publication, and the versions published by the Ministry of Public Education during the 1960s within the framework of implementing an adult literacy campaign. Methodologically, we studied different editions and versions of the Silabario, texts published in newspapers and magazines, as well as complementary documentary sources. Based on the evidence analyzed, we propose that the historical success of the Silabario can be explained, on the one hand, by the marketing strategy undertaken by its author; due to the simplicity of its methodology; and for the role it played in the literacy campaign carried out in the mid-1960s in Chile.El Silabario Hispano Americano, escrito por Adrián Dufflocq, es uno de los textos que más presencia ha tenido en la memoria colectiva chilena. Hasta la fecha, este silabario cuenta con casi un centenar de ediciones desde que circuló por primera vez en Chile, a mediados de la década de 1940. Sin embargo, a pesar de su relevancia, este silabario aún no ha sido objeto de análisis historiográficos. Por ello, este artículo tiene como objetivo analizar el Silabario Hispano Americano desde una perspectiva histórica. En particular, profundizaré en el contexto de su creación, en las tensiones que generó su publicación y en las versiones publicadas por parte del Ministerio de Educación Pública durante la década de 1960, en el marco de la implementación de una campaña de alfabetización de personas adultas. La propuesta se sustenta en el estudio de las diferentes ediciones y versiones del Silabario, en notas publicadas en diversos periódicos y revistas, además de fuentes documentales complementarias. A partir de la evidencia analizada, propongo que el éxito histórico del Silabario se puede explicar, por una parte, por la estrategia de comercialización emprendida por su autor; por la simpleza de su metodología, que permitía que personas sin muchos años de escolaridad pudiesen desarrollar la tarea alfabetizadora; y por el rol que jugó en la campaña de alfabetización llevada a cabo a mediados de la década de 1960 en Chile
Effect of sowing date and water availability on growth of plants of chia (Salvia hispanica L) established in Chile
No full text© 2018 Silva et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. From 2010 to 2014 two trials were performed to assess the effect of sowing date (SD1, SD2) and irrigation treatments (IT1, IT2) on the growth of chia in central Chile, measuring leaf area (LA) and dry matter (DM) as primary parameters and relative growth rate (RGR), net assimilation rate (NAR), leaf weight ratio (LWR), crop growth rate (CGR) and specific leaf weight (SLW) as secondary parameters. Both LA and DM reached maximum values between 640 and 1150 accumulated degree days (ADD). However, LA and DM were 25% greater for sowing dates than for available water. Flowering date was also not affected by sowing date or water availability; plants flowered at 1140 and 942 ADD in SD1 and SD2 respectively, and at 499 ADD in the water availa
