FE2 evaluation of stress triaxiality / lode angle dependencies of void growing processes

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Revisit of magnetic orders in 1/1 approximant crystals of Tsai-type quasicrystal from theoretical points of view

The various magnetic orders observed in approximant crystals of Tsai-type quasicrystal are important for deepening our understanding of mysterious magnetism in quasicrystals. Using an icosahedral cluster model with inter-cluster interactions, we give an intuitive explanation of the mechanism of magnetic orders previously reported by classical Monte-Carlo simulations for an approximant-crystal model describing a Gd-based Tsai-type 1/1 approximant crystal.Comment: 2 pages, 2 figure

Estrategias alternas para la valoración histomorfológica de la edad a la muerte en restos esqueléticos deteriorados : Aplicaciones en la bioarqueología del área maya

Nuestro trabajo se enfoca en el potencial de asignar rangos de edades a la muerte a partir de la micrometamorfosis del tejido óseo en secciones diagenéticamente alteradas. Para ello elaboramos estándares para la contabilización parcial de las microestructuras y la evaluación cualitativa del tejido histológico no descalcificado. Mostramos su potencial en tres estudios ejemplares de secciones obtenidas de los restos de tres dignatarios mayas que vivieron durante el primer milenio de nuestra era. En el primer caso, los acercamientos histológicos robustecen la aproximación macroscópica original. Por otra parte, la discrepancia entre los diferentes resultados conduce a una discusión sobre las condiciones patológicas en el Caso 2. En el Caso 3 obtuvimos resultados macroscópicos y microscópicos similares, con lo cual mejoramos la aproximación cronovital global. Concluimos el presente ensayo discutiendo el potencial de la evaluación histomorfológica (y sus diferentes protocolos) en la asignación de la edad a la muerte de series óseas arqueológicas deterioradas.Our study focuses on the histological assignation of age-at-death ranges to diagenetically deteriorated skeletal remains. To this end, we review age-related microscopic metamorphoses in thin sections of undecalcified bone in order to generate selective counts of microstructures and a qualitative assessment of histological tissue. In this essay, we evaluate the potential of these standards in three case studies on the deteriorated skeletal remains of three Mayan dignitaries from the first millennium CE. In the first case, the macroscopic approximation is confirmed by histologic scrutiny, while in the second case contradicting results lead to a discussion of the individual’s pathological conditions that could explain the discrepancy in specific lines of evidence. In the third specimen, the combination of macroscopic and microscopic results improved chrono-vital assignation. We conclude our work with a discussion of the potential that histomorphological evaluation (and its different protocols) holds in age-range assignment in deteriorated skeletal remains from archaeological contexts.Dossier: Los estudios de histología ósea en Antropología BiológicaAsociación de Antropología Biológica de la República Argentina (AABRA

Estrategias alternas para la valoración histomorfológica de la edad a la muerte en restos esqueléticos deteriorados : Aplicaciones en la bioarqueología del área maya

Nuestro trabajo se enfoca en el potencial de asignar rangos de edades a la muerte a partir de la micrometamorfosis del tejido óseo en secciones diagenéticamente alteradas. Para ello elaboramos estándares para la contabilización parcial de las microestructuras y la evaluación cualitativa del tejido histológico no descalcificado. Mostramos su potencial en tres estudios ejemplares de secciones obtenidas de los restos de tres dignatarios mayas que vivieron durante el primer milenio de nuestra era. En el primer caso, los acercamientos histológicos robustecen la aproximación macroscópica original. Por otra parte, la discrepancia entre los diferentes resultados conduce a una discusión sobre las condiciones patológicas en el Caso 2. En el Caso 3 obtuvimos resultados macroscópicos y microscópicos similares, con lo cual mejoramos la aproximación cronovital global. Concluimos el presente ensayo discutiendo el potencial de la evaluación histomorfológica (y sus diferentes protocolos) en la asignación de la edad a la muerte de series óseas arqueológicas deterioradas.Our study focuses on the histological assignation of age-at-death ranges to diagenetically deteriorated skeletal remains. To this end, we review age-related microscopic metamorphoses in thin sections of undecalcified bone in order to generate selective counts of microstructures and a qualitative assessment of histological tissue. In this essay, we evaluate the potential of these standards in three case studies on the deteriorated skeletal remains of three Mayan dignitaries from the first millennium CE. In the first case, the macroscopic approximation is confirmed by histologic scrutiny, while in the second case contradicting results lead to a discussion of the individual’s pathological conditions that could explain the discrepancy in specific lines of evidence. In the third specimen, the combination of macroscopic and microscopic results improved chrono-vital assignation. We conclude our work with a discussion of the potential that histomorphological evaluation (and its different protocols) holds in age-range assignment in deteriorated skeletal remains from archaeological contexts.Dossier: Los estudios de histología ósea en Antropología BiológicaAsociación de Antropología Biológica de la República Argentina (AABRA

Single-ion anisotropy in Haldane chains and form factor of the O(3) nonlinear sigma model

We consider spin-1 Haldane chains with single-ion anisotropy, which exists in known Haldane chain materials. We develop a perturbation theory in terms of anisotropy, where magnon-magnon interaction is important even in the low temperature limit. The exact two-particle form factor in the O(3) nonlinear sigma model leads to quantitative predictions on several dynamical properties including dynamical structure factor and electron spin resonance frequency shift. These agree very well with numerical results, and with experimental data on the Haldane chain material Ni(C$_5$H$_{14}$N$_2$)$_2$N$_3$(PF$_6$)

Photosynthetic physiology and primary productivity of phytoplankton in the Australian sector of the Southern Ocean

第2回極域科学シンポジウム　共通セッション「海氷圏の生物地球化学」 11月16日（水） 統計数理研究所 3階セミナー

N-Cadherin Expressed on Malignant T Cell Lymphoma Cells is Functional, and Promotes Heterotypic Adhesion Between the Lymphoma Cells and Mesenchymal Cells Expressing N-Cadherin

Cadherins are Ca2+-dependent cell–cell adhesion molecules, and are involved in the formation and maintenance of the organocellular architecture. Using a combination of molecular biologic and biochemical methods, we analyzed cadherins expressed on cultured human malignant lymphoma cell lines (adult T cell lymphomas, human T cell leukemia virus type 1-negative T cell lines, and thymus-derived lymphoma cell lines), and obtained evidence that N-cadherin is the major cadherin expressed on these cells. These cells were found to form cell aggregates in a Ca2+-dependent manner, and more importantly to coaggregate and adhere with cells expressing N-cadherin, suggesting that N-cadherin on lymphoma cells is functionally active. Therefore, N-cadherin expressed on lymphoma cells could underlie the frequent invasion of these cells into the mesenchymal tissue in the skin and the central nervous system