Results 51 to 60 of about 1,379,799 (331)

Estructura y composición de las bandadas mixtas de aves invernales a lo largo del gradiente latitudinal en las selvas montanas de las Yungas, Argentina

open access: yesActa Zoológica Lilloana, 2021
Las bandadas mixtas (BM) son asociaciones de diferentes especies que se forman como estrategia para aumentar la eficiencia de forrajeo y/o reducir el riesgo de predación.
María Elisa Fanjul   +2 more
doaj   +1 more source

EFFECTS OF SOLAR UV-B RADIATION IN THE ACCUMULATION OF RHIZOCARPIC ACID IN A LICHEN SPECIES FROM ALPINE ZONES OF CHILE

open access: yes, 2002
En la especie liquenica Acarospora schleicheri, recolectada en gradientes altitudinales a 18o, 19o y 33o Lat. S, en zonas alpinas de Chile, se determinaron y compararon las concentraciones de acido rizocarpico. Se observaron incrementos significativos en
Cecilia Rubio   +3 more
semanticscholar   +1 more source

Diseño y simulación de gradientes de campo magnético para IRM a 3T [PDF]

open access: yes, 2009
La resonancia magnética (RM) es una técnica de diagnóstico no invasiva que produce imágenes anatómicas de muy alta calidad de las diferentes estructuras del cuerpo así como también puede realizarse RM funcional, difusión, perfusión y espectroscopia de ...
MARIO ROSAS SEGURA
core   +1 more source

Gradient upon gradient

open access: yesThe Journal of Cell Biology, 2005
One RanGTP gradient builds on another to spatially guide mitotic spindle assembly, say Maiwen Caudron, Eric Karsenti (European Molecular Biology Laboratory, Heidelberg, Germany), and colleagues. Figure The RanGTP-importin β gradient (red) promotes microtubule nucleation (blue) and stabilization (green).
openaire   +2 more sources

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk   +10 more
wiley   +1 more source

Desenvolvimento de sistema-protótipo de sinterização seletiva a laser, visando a obtenção de componentes com gradientes funcionais [PDF]

open access: yes, 2006
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica.Vários processos de produção são utilizados para obtenção de objetos, muitos destes impondo restrições quanto à ...
Kulman, Cristiano
core  

Bone Mineral Density After Contemporary Treatment for Acute Lymphoblastic Leukaemia: A Matched Cross‐Sectional Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Reduced bone mineral density (BMD) has been reported in survivors of childhood and young adult acute lymphoblastic leukaemia (ALL); however, data from cohorts treated with contemporary protocols and including matched controls remain limited.
Karen Schow Jensen   +10 more
wiley   +1 more source

Gradientes de metalicidad de poblaciones estelares [PDF]

open access: yes, 2019
Tesis (Magíster en Astrofísica)Analizamos la evolución de los gradientes de metalicidad de poblaciones estelares con distintas edades del survey MaNGA, en un rango de masa estelar entre 108:5M y 1012:5M con z < 0:04. La evolución de los gradientes de
Catalán Véliz, Tracy
core  

Avaliação dos gradientes de temperatura em gatos hígidos [PDF]

open access: yes, 2016
Dissertação (mestrado)—Universidade de Brasília, Faculdade de Agronomia e Medicina Veterinária, Programa de Pós-Graduação em Saúde Animal, 2016.Objetivo – avaliar os diversos gradientes de temperatura em gatos hígidos e relacioná-los com a lactatemia, a ...
Morais, Kamila Santos de
core   +1 more source

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin   +2 more
wiley   +1 more source

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