572 research outputs found
^<40>Ar-^<39>Ar Dating of Terrestrial and Exterrestrial Materials : Basalts from the Japan Sea Floor, Deccan Plateau and Meteorites from Antarctica
Through a series of ^Ar-^Ar dating for terrestrial and exterrestrial samples, the results for basalts from the Japan Sea floor, Deccan Plateau and for meteorites from Antarctica give significant information concerning their formation histories. ^Ar-^Ar ages of basalts from the Japan Sea floor give a constraint that the Japan Sea floor was formed at least 20 Ma. ^Ar-^Ar ages for dyke samples from the Deccan Plateau indicate a possibility for the occurrence of a little younger ages than that of the main plateau formations by a few million years. Meteorites collected from Antarctica show some variable ^Ar-^Ar ages reflecting their different thermal histories
First radiocarbon dates for the B sector of Alero Deodoro Roca site (Ongamira, Córdoba, Argentina)
La arqueología de las Sierras Centrales argentinas fue construida, a través de una serie de caracterizaciones cronológicas y contextos arqueológicos asociados, por el Dr. Alberto Rex González entre las décadas de 1950 y 1960 (González 1960). Para llevar adelante dicha construcción utilizó sitios claves, con secuencias maestras; uno de los principales fue el Alero Deodoro Roca, situado en el valle de Ongamira, depto. Ischilín, en el norte de la provincia de Córdoba (figura 1). El Alero Deodoro Roca es conocido desde principios del siglo xx, pero no es hasta la década de 1930 cuando se centra el interés en las ocupaciones prehispánicas del valle. Aníbal Montes (1943) es quien comienza con una serie de excavaciones no sistemáticas donde define dos sectores dentro del sitio: A y B (figura 2). La descripción de las primeras excavaciones, que comienzan en el sector A y alcanzan algunas porciones del sector B, es publicada en las actas del Congreso de Historia Argentina del Norte y Centro, llevado a cabo en la ciudad de Córdoba en el año 1941, evento en el cual también se crea el Instituto de Arqueología, Lingüística y Folklore de la Universidad Nacional de Córdoba (UNC) (Bonnín 2008). En ese mismo volumen González (1943) hace una descripción del material hallado en estas excavaciones. De estos trabajos de campo no se cuenta con registros sistemáticos, aunque sí con restos de colecciones que se encuentran en el Museo de Antropología de la Facultad de Filosofía y Humanidades (FFyH) –UNC– y probablemente en otros museos de Argentina.Fil: Cattaneo, Gabriela Roxana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Antropología de Córdoba; Argentina. Universidad Nacional de Cordoba. Facultad de Filosofia y Humanidades. Museo de Antropologia; ArgentinaFil: Izeta, Andres Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Antropología de Córdoba; Argentina. Universidad Nacional de Cordoba. Facultad de Filosofia y Humanidades. Museo de Antropologia; ArgentinaFil: Takigami, Mai. University of Tokyo; Japó
Accreted Paleoproterozoic eolian beds and dolerite sills in the Miocene Siwalik belt, central Nepal, and their origin
Abstract HKT-ISTP 2013
A
Campos de Experiência pela teoria de Vygotsky
Este artigo tem por objetivo avançar nos estudos dos Campos de Experiência, estabelecida na Base Nacional Comum Curricular (BNCC),somado à prática do professor com a contribuição da teoria de Vygotsky. Trazemos a teoria histórico-cultural como concepção do fazer pedagógico aplicado aos Campos de Experiência. Houve um percurso histórico de compreensão do ser humano em sua aprendizagem; como ser essencialmente biológico, num trajeto natural de desenvolvimento; partindo para a compreensão de aprendizagem a partir das interações sociais, e que a aprendizagem gera desenvolvimento, no qual delineia o trabalho por Campos de Experiência na Educação Infantil. Concluímos que a escola tem enorme responsabilidade no desenvolvimento da criança, pois pode ser gerador das interações sociais, na medida em que seu papel, bem como a mediação do professor, são fundamentais na promoção da aprendizagem, e, portanto, na formação e evolução infantil
Functional bracing for delayed union of a femur fracture associated with Paget's disease of the bone in an Asian patient: a case report
Paget's disease of the bone is a common metabolic bone disease in most European countries, Australia, New Zealand, and North America. Conversely, this disease is rare in Scandinavia, Asia, and Africa. In Japan, it is extremely rare, with a prevalence of 0.15/100000. Paget's disease is a localized disorder of bone remodeling. Excessive bone resorption and abnormal bone formation result in biomechanically weakened bone and predispose patients to fracture. Delayed union and non-union of fractures have been reported in patients with Paget's disease. Therefore, open reduction and internal fixation of fractures has been recommended to prevent such complications. Here we report an unusual case of a 63-year-old Asian woman with delayed union of a femur fracture secondary to Paget's disease, which was treated successfully by functional bracing
The study of isotope ecology of food resource exploitation and dietary transition in the pre-Hispanic Andes
学位の種別: 課程博士審査委員会委員 : (主査)東京大学教授 米田 穣, 東京大学教授 河村 正二, 東京大学教授 三谷 啓志, 東京大学教授 宇垣 正志, 南山大学准教授 渡部 森哉University of Tokyo(東京大学
The phenotype of infiltrating macrophages influences arteriosclerotic plaque vulnerability in the carotid artery
Background: Proinflammatory (M1) macrophages and anti-inflammatory (M2) macrophages have been identified in atherosclerotic plaques. While these macrophages have been speculated to be related to plaque vulnerability, there are limited studies investigating this relationship. Therefore, we examined the association between macrophage phenotype (M1 versus M2) and plaque vulnerability and clinical events. Methods: Patients undergoing carotid endarterectomy received an ultrasound of the carotid artery before surgery. Plaques were processed for analysis by immunohistochemistry, Western blotting, and real-time polymerase chain reaction studies. Medical history and clinical data were obtained from medical records. Results: Patients were divided into 2 groups: those suffering from acute ischemic attack (symptomatic, n = 31) and those that did not present with symptoms (asymptomatic, n = 34). Ultrasound analysis revealed that plaque vulnerability was greater in the symptomatic group (P= .033; Chi-square test). Immunohistochemistry revealed that plaques from the symptomatic group had a greater concentration of M1 macrophages (CD68-, CD11c-positive) while plaques from the asymptomatic group had more M2 macrophages (CD163-positive). This observation was confirmed by Western blotting. Characterization by real-time polymerase chain reaction studies revealed that plaques from the symptomatic group had increased expression of the M1 markers CD68 and CD11c, as well as monocyte chemoattractive protein-1, interleukin-6, and matrix metalloproteinase-9. In addition, more M1 macrophages expressed in unstable plaques were defined by ultrasound analysis, while more M2 macrophages were expressed in stable plaques. Conclusions: Our data show that M1 macrophage content of atherosclerotic plaques is associated with clinical incidence of ischemic stroke and increased inflammation or fibrinolysis. We also show the benefits of using ultrasound to evaluate vulnerability in the plaques
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