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Search Results: 1 - 10 of 25199 matches for " Jorge Henríquez - Pino "
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Características Morfológicas y Biométricas del Músculo Papilar Septal en Corazones de Individuos Chilenos
Soto Peralta,Aglae; Henríquez Pino,Jorge;
International Journal of Morphology , 2011, DOI: 10.4067/S0717-95022011000300008
Abstract: a descriptive research study was carried out on the anatomical and biometric characteristics of the septal papillary muscle in 30 hearts of adult chilean subjects, between 18 and 84 years of age of both sexes and without apparent cardiac pathology, from the normal human anatomy unit, basic sciences department of the universidad de la frontera. results show that the septal papillary muscle was present in 83.3% of the hearts in the study. of these 44.0% show one muscle only, 28% show two muscles and 28% show three septal papillary muscles. in the septal papillary muscles found, 71.1% are free cone-shaped, 24.4% were attached cone-shaped, and 4.5% were bridge-shaped. regarding the length of attached cone and free cone shaped, the highest percentage range was between 4.0 mm and 5.99 mm, with 45.5% and 42.4% respectively. the present study shows the importance of integrating the septal papillary muscle to the international anatomical nomenclature.
Arquitectura de las Fibras Ventriculares en el Corazón de Avestruz (Struthio camelus)
Carvallo,Pamela; Henríquez - Pino,Jorge;
International Journal of Morphology , 2010, DOI: 10.4067/S0717-95022010000200002
Abstract: the arrangement of the ventricular myocardial fibers of the ostrich heart (struthio camelus) was macro and mesoscopically studied in 14 ostrich hearts, dissected by an adaptation of the pettigrew method. three different myocardial layers - superficial (subepicardial), middle and deep (subendocardial) - have been identified according to the ventricular myocardial fibers orientation. the superficial fibers are common for both ventricles, however, the fibers of the middle and deep layers, are unique to each ventricle. the left ventricle presents a thick middle muscular layer, which also constitutes the main part of the interventricular septum and the heart apex.
Arquitectura de las Fibras Ventriculares en el Corazón de Avestruz (Struthio camelus) Architecture of the Ventricular Fibers in Ostrich Heart (Struthio camelus)
Pamela Carvallo,Jorge Henríquez - Pino
International Journal of Morphology , 2010,
Abstract: La disposición de las fibras del miocardio ventricular del corazón del avestruz (Struthio camelus) fue estudiada macro y mesoscópicamente en 14 corazones de avestruz, disecados mediante una adaptación del método de Pettigrew. Se identificaron tres capas musculares: superficial, media y profunda, de acuerdo a la orientación de las fibras del miocardio ventricular. Las fibras de la capa superficial son comunes a ambos ventrículos, en cambio las fibras de las capas media y profunda son propias de cada ventrículo. El ventrículo izquierdo presenta una gruesa capa muscular media, que también constituye mayoritariamente el septo interventricular y el ápex del corazón. The arrangement of the ventricular myocardial fibers of the ostrich heart (Struthio camelus) was macro and mesoscopically studied in 14 ostrich hearts, dissected by an adaptation of the Pettigrew method. Three different myocardial layers - superficial (subepicardial), middle and deep (subendocardial) - have been identified according to the ventricular myocardial fibers orientation. The superficial fibers are common for both ventricles, however, the fibers of the middle and deep layers, are unique to each ventricle. The left ventricle presents a thick middle muscular layer, which also constitutes the main part of the interventricular septum and the heart apex.
Características Morfológicas y Biométricas del Músculo Papilar Septal en Corazones de Individuos Chilenos Morphological and Biometric Characteristics of Septal Papillary Muscle in Hearts of Chilean Individuals
Aglae Soto Peralta,Jorge Henríquez Pino
International Journal of Morphology , 2011,
Abstract: Se realizó un estudio descriptivo de las características anatómicas y biométricas del músculo papilar septal en 30 corazones de individuos adultos chilenos, en edades comprendidas entre 18 y 84 a os de edad, de ambos sexos, sin aparente patología cardíaca, pertenecientes a la Unidad de Anatomía Humana Normal del Departamento de Ciencias Básicas de la Universidad de La Frontera. Los resultados mostraron que el músculo papilar septal, se presenta en un 83,3% de los corazones del estudio. De éstos, el 44,0% presenta un solo músculo, el 28% presenta dos músculos y el 28% tres músculos papilares septales. De los músculos papilares septales encontrados, el 71,1% correspondió a la forma cono libre, el 24,4% a la forma cono pegado y el 4,5% a la forma puente. En cuanto a la longitud de forma cono pegado y cono libre, el rango que se encuentra en mayor porcentaje está entre 4,0 mm - 5,99 mm; con un 45,5% y 42,4%, respectivamente. Este estudio nos demuestra la importancia de incorporar al músculo papilar septal a la nomenclatura anatómica internacional. A descriptive research study was carried out on the anatomical and biometric characteristics of the septal papillary muscle in 30 hearts of adult Chilean subjects, between 18 and 84 years of age of both sexes and without apparent cardiac pathology, from the Normal Human Anatomy Unit, Basic Sciences Department of the Universidad de La Frontera. Results show that the septal papillary muscle was present in 83.3% of the hearts in the study. Of these 44.0% show one muscle only, 28% show two muscles and 28% show three septal papillary muscles. In the septal papillary muscles found, 71.1% are free cone-shaped, 24.4% were attached cone-shaped, and 4.5% were bridge-shaped. Regarding the length of attached cone and free cone shaped, the highest percentage range was between 4.0 mm and 5.99 mm, with 45.5% and 42.4% respectively. The present study shows the importance of integrating the septal papillary muscle to the International Anatomical Nomenclature.
Patrón de Distribución de las Arterias Coronarias y sus Ramas Ventriculares en el Corazón de Avestruz (Struthio camelus)
Henríquez,Helga; Henríquez,Jorge; Olave,Enrique;
International Journal of Morphology , 2012, DOI: 10.4067/S0717-95022012000300040
Abstract: we consider it important to know the heart of the ostrich irrigation due to the paucity of research, for which there has been a descriptive study of the distribution pattern of the coronary arteries and their branches ventricular determining the presence, origin, length and distribution of these. we identified ventricular branches, anastomoses, type of dominance and perform a comparison of ostrich heart of mammals and humans. fifthy hearts were studied ostrich, african black class, were prepared and injected the coronary arteries with neoprene, with a different color, and treated in 10% formalin for 10 to 12 days for dissection of the arteries and ventricular branches. coronary arteries of the heart of ostrich originate in the right and left aortic sinuses. the right is at 98%, with an average length of 127.1 mm, runs reaching the coronary sulcus which originates subsinuoso interventricular septal branch in 92% subsinuous also causes the cone branch by 98% and branches ventricular. the left is present in 100%, has an average length of 40.19 mm, branches originating from it are the septal artery paraconal 100%, the circumflex artery 100%, the artery of the cone 96%, a diagonal branch present only in 2%, interventricular artery subsinuous present in 8%, and also presents ventricular branches. of the anastomosis, at 6% was not found, with 42%, 22% two to three 30%. the most common is between the artery and circumflex interventricular subsinuous present in 42.1%, right dominance, is 56%, the balance of 36% and left dominance only by 8%. it was observed that the surface blood supply at the heart of ostrich, the type of dominance and the large number of superficial anastomosis was resembling the human heart and mammals.
Patrón de Distribución de las Arterias Coronarias y sus Ramas Ventriculares en el Corazón de Avestruz (Struthio camelus) Distribution Pattern of the Coronary Arteries and Ventricular Branches in the Heart of Ostrich (Struthio camelus)
Helga Henríquez,Jorge Henríquez,Enrique Olave
International Journal of Morphology , 2012,
Abstract: Consideramos importante conocer la irrigación cardíaca del avestruz, debido a la poca investigación realizada; por lo cual se ha hecho un estudio descriptivo del patrón de distribución de las arterias coronarias y sus ramas ventriculares determinando la presencia, origen, longitud y distribución de ellas. Identificamos ramas ventriculares, las anastomosis, tipo de dominancia y realizamos una comparación del corazón del avestruz con mamíferos y humanos. Se estudiaron 50 corazones de avestruz, de la clase African Black, fueron preparados e inyectadas las coronarias con Látex Neopreno, con distinto color, y tratadas en formol al 10% por 10 a 12 días para la disección de las arterias y las ramas ventriculares. Las arterias coronarias del corazón de avestruz se originan en los senos aórticos derecho e izquierdo. La derecha se encuentra en un 98%, con una longitud promedio de 127,1 mm, recorre el surco coronario llegando al interventricular subsinuoso donde origina la rama interventricular subsinuosa en el 92%, además origina la rama del cono en un 98% y ramas ventriculares. La izquierda está presente en el 100%, presenta una longitud promedio de 40,19 mm, las ramas que se originan de ella, son la arteria interventricular paraconal en un 100%, la arteria circunfleja en un 100%, la arteria del cono en el 96%, una rama diagonal presente solo en el 2%, la arteria interventricular subsinuosa presente en un 8%, y además presenta ramas ventriculares. De las anastomosis, en el 6% no se encontró, con una un 42%, con dos un 22% con tres un 30%. La más frecuente es entre la arteria interventricular subsinuosa y la circunfleja presente en un 42,1%, La dominancia derecha, es un 56%, el balance en un 36%, y la dominancia izquierda solo en un 8%. Se observó que la irrigación sanguínea superficial presente en el corazón de avestruz, el tipo de dominancia y la gran cantidad de anastomosis superficiales, se semejan al corazón humano y de mamíferos. We consider it important to know the heart of the ostrich irrigation due to the paucity of research, for which there has been a descriptive study of the distribution pattern of the coronary arteries and their branches ventricular determining the presence, origin, length and distribution of these. We identified ventricular branches, anastomoses, type of dominance and perform a comparison of ostrich heart of mammals and humans. Fifthy hearts were studied ostrich, African Black class, were prepared and injected the coronary arteries with neoprene, with a different color, and treated in 10% formalin for 10 to 12 days for dissection of t
HYDROCARBONS AND ORGANOCHLORINE PESTICIDES IN SOILS OF THE URBAN ECOSYSTEM OF CHILLáN AND CHILLáN VIEJO, CHILE
HENRíQUEZ,MARTA; BECERRA,JOSé; BARRA,RICARDO; ROJAS,JORGE;
Journal of the Chilean Chemical Society , 2006, DOI: 10.4067/S0717-97072006000300002
Abstract: although traditional soil use in chillán and chillán viejo is agricultural, both cities have seen their surrounding areas expand and change drastically. economic activities have increased, including phytosanitary companies and petroleum derivatives used in agriculture and transport. this has had a large impact on the soil. the present work studies total hydrocarbon contamination (lineal and polycyclic aromatics) and chlorine pesticides (aldrin, dieldrin, ddt, and dde) in surface soils near potential sources of pollution. the concentration of total hydrocarbons in the majority of the samples analyzed is between 0.1 and 70 mg/kg. only 8.8 % exceed 70 mg/kg., indicating the need for recovery before use, according international regulations. the pesticide aldrin was found in 41.2 % of the soil samples, ddt in 32.4 %, dieldrin in 29.4%, and dde in 2.9%. these levels exceed the maximum limits established for ecological improvement in chile. amongst themselves, total hydrocarbons correlated with total pesticides and with ddt, but not with aldrin or dieldrin. correlations were also found for total pesticides with ddt and aldrin, and strong correlations were observed for ddt with aldrin, and aldrin with dieldrin
BIODIVERSIDAD DE MACROHONGOS DE LA RESERVA NACIONAL MAGALLANES
Mancilla,Verónica; Henríquez,Juan Marcos; Vera,Jorge;
Anales del Instituto de la Patagonia , 2008, DOI: 10.4067/S0718-686X2008000100003
Abstract: the present study delivers qualitative precedents on the richness and abundance of macro- fungi existing in plant communities of the national reserve magallanes. it was realized between january to may 2005 on four plant communities (forest of lenga, forest of coigüe, murtillar and humid grassland. in every community there were delimited permanent plots, in which by means of random quadrants the richness and abundance of macrofungi were evaluated from time to time every 14 days. parallel intensive sampling realized what allowed to complement the list of species. in whole there was identified a whole of 40 species considering both samplings. the study demonstrated that la major richness and abundance of macrofungi appears in forest communities, being superior in the plots relieved in coigüe. in the bushes did not register individuáis. the most abundant species was russula nothofaginea. on the other hand, coprinus disseminatus was the present species in major quantity of environments. an analysis of the seasonal variation of the fructifications allows to conclude that the major diversity of macromicetes appears in may. the results valídate the hypothesis that the forests the forests of coigüe present the major abundance of macro fungicompared with other plant communities. nevertheless, the intensive samplings, considering mixed forests and diverse environments, the richness of species increases in the trees caducifolios basins. on the other hand, it estimates that the climatic extreme conditions presented in this study (snow early and temperatures cool) could affect the diversity of macro fungi in the different communities.
Dise?o del proceso de evaluación del desempe?o del personal y las principales tendencias que afectan su auditoría
Sánchez Henríquez,Jorge; Calderón Calderón,Viviana;
Pensamiento & Gestión , 2012,
Abstract: we present a detailed analysis of the various stages of a performance evaluation process and the main human resource trends and those generic trends that are related to the performance evaluation, which directly affect the conduct of an audit. the methodology is based mainly on literature and article reviews which were published in specialized publications. the results of this research are presented with a broad definition of performance evaluation, referencing mainly contemporary authors, and we continue with a theoretical and a graphic presentation of the evaluation process. subsequently, the major trends affecting human resource management are described, as well as performance evaluation, making a comparison between past and future visions of a series of concepts related to the evaluation, and concluding with contemporary references to concepts related with audits of performance evaluation.
Influencia de la postura corporal en la prevalencia de las disfunciones craneomandibulares
Fuentes F,Ramón; Freesmeyer,Wolfgang; Henríquez P,Jorge;
Revista médica de Chile , 1999, DOI: 10.4067/S0034-98871999000900007
Abstract: background: postural alterations of the shoulders, dorsal spine and hips could have an influence on the development of craniomandibular dysfunctions. aim: to study the influence of body posture on the prevalence of craniomandibular dysfunction. subjects and methods: one hundred thirty six dental students and 41 patients assisting to the temporomandibular joints (tmj) clinic at the freie universit?t at berlin, were studied. masticator, cervical muscles, temporomandibular joints and occlusions were clinically examined. the position of shoulders and hips was measured with the use of an acromiopelvimeter. results: no relationship was found between postural alterations of the hips and shoulders, articular noises and sensibility or pain while palpating the temporomandibular joints. among students, a relationship between postural alterations of the shoulders and the sensibility or pain while palpating the tmj, was observed. when all muscles were considered, a significant relationship between asymmetric shoulders or hips and muscular pain while palpating was observed among students. conclusions: some symptoms, especially muscular sensibility is more pronounced in people with hip and shoulder asymmetries. this relation is more pronounced in dental students than in patients.
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