Results 51 to 60 of about 102,093 (192)

Ground state of the spin-1/2 chain of green dioptase at high fields

open access: yes, 2013
The gem-stone dioptase Cu6Si6O18.6H2O has a chiral crystal structure of equilateral triangular helices consisting of Cu-3d spins. It shows an antiferromagnetic order with an easy axis along c at TN = 15.5 K under zero field, and a magnetization jump at ...
Fujisawa, Masashi   +8 more
core   +1 more source

Formation process of the gravel‐dominated deposit from the 2011 Tohoku‐oki tsunami in Ofunato, northeastern Japan, inferred by integrating sedimentology and tsunami modelling

open access: yesSedimentology, EarlyView.
ABSTRACT Tsunami deposits serve as geological records of past events and are essential for understanding the occurrence and dynamics of tsunamis. However, conventional research has largely focused on sandy and boulder deposits, leaving gravel‐dominated tsunami deposits comparatively underexplored; furthermore, their characteristics and formation ...
Hidetoshi Masuda   +5 more
wiley   +1 more source

Contribución al conocimiento de la relación biológica entre Pythium sp. y raíces y nódulos radicales de Alnus acuminata H.B.K

open access: yesAgronomía Colombiana, 1987
En los alrededores del embalse del Neusa (Cundinamarcal, se encontró un hongo del género Pythium asociado frecuentemente a los nódulos radicales del Aliso (Alnus acuminata), especie nativa de gran importancia en programas de reforestación, protección de ...
Moncada María Amelia   +3 more
doaj  

Ensayos preliminares in vitro de biosorción de cadmio por cepas fúngicas nativas de suelos contaminado

open access: yesInnovaciencia, 2014
Introducción: Los metales pesados como el cadmio (Cd), no pueden ser degradados por métodos químicos o biológicos, y tienden a bioacumularse y a biomagnificarse; constituyen un grave problema en la cadena trófica, provocan diversos efectos tóxicos, en ...
Beatriz Elena Guerra Sierra   +3 more
doaj   +1 more source

Magneto-optical and magnetotransport properties of heavily Mn-doped GaMnAs

open access: yes, 2006
We have studied the magneto-optical and magnetotrasnport properties of GaMnAs thin films with high Mn concentrations (x= 12.2 - 21.3%) grown by molecular-beam epitaxy.
Ohno, Kenichi   +2 more
core   +1 more source

Spherulite in the modern aragonitic travertine stromatolite has a calcite core with exopolymers

open access: yesSedimentology, EarlyView.
ABSTRACT Spherulites are spherical to ellipsoidal particles formed by various crystalline substances and can be abiotically synthesised in the laboratory. Among various spherulite types, spherulites composed of calcium carbonate are also found in various natural environments, but their abiotic or biotic origins are still controversial.
Fumito Shiraishi   +4 more
wiley   +1 more source

POTENCIAL DE ALGUNOS MICROORGANISMOS EN EL COMPOSTAJE DE RESIDUOS SÓLIDOS

open access: yesTerra Latinoamericana, 2014
En México se producen diariamente toneladas de residuos sólidos que requieren un tratamiento seguro. El aumento de residuos que contienen hidrocarburos polimerizados muestra la necesidad de implementar un proceso de compostaje.
Alejandro D. Camacho   +4 more
doaj  

Quantum cloning machines for equatorial qubits

open access: yes, 2001
Quantum cloning machines for equatorial qubits are studied. For the case of 1 to 2 phase-covariant quantum cloning machine, we present the networks consisting of quantum gates to realize the quantum cloning transformations.
A. Peres   +22 more
core   +1 more source

Hypoxia and the cytoskeleton

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Schematic outlining the activation of hypoxia‐sensitive pathways, the influence of hypoxia and associated pathways on the cytoskeleton, and the impact of these on disease progression. Abstract A highly‐regulated and dynamic cytoskeleton is vital for functional cellular physiology and the maintenance of homeostasis.
Darragh Flood, Cormac T. Taylor
wiley   +1 more source

Optical control of magnetization of micron-size domains in antiferromagnetic NiO single crystals

open access: yes, 2010
We propose Raman-induced collinear difference-frequency generation (DFG) as a method to manipulate dynamical magnetization. When a fundamental beam propagates along a threefold rotational axis, this coherent second-order optical process is permitted by ...
Hiroharu Tamaru   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy