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961.
We prove that the maximum norm of the deformation tensor of velocity gradients controls the possible breakdown of smooth(strong)
solutions for the 3-dimensional (3D) barotropic compressible Navier-Stokes equations. More precisely, if a solution of the
3D barotropic compressible Navier-Stokes equations is initially regular and loses its regularity at some later time, then
the loss of regularity implies the growth without bound of the deformation tensor as the critical time approaches. Our result
is the same as Ponce’s criterion for 3-dimensional incompressible Euler equations (Ponce in Commun Math Phys 98:349–353, 1985). In addition, initial vacuum states are allowed in our cases. 相似文献
962.
Dao-Ming Lu 《International Journal of Theoretical Physics》2011,50(6):1809-1818
We study the entanglement evolution between two atoms, which are initially entangled with a third atom and trapped in two
separated cavities coupled by an optical fiber. We also investigate the temporal evolution in the entanglement between the
atom and the local cavity mode. The influence of the state-selective measurement on the atom outside the cavities and the
influence of cavity-fiber coupling coefficient on the entanglement are discussed. The results show that the entanglement can
be strengthened through the state-selective measurement on the atom outside the cavities. We also find that, by increasing
the cavity-fiber coupling coefficient, the atom-atom entanglement is strengthened, but the atom-cavity entanglement is weakened. 相似文献
963.
Xing-Lei Xu Shi-Min Xu Hong-Qi Li Ji-Suo Wang 《International Journal of Theoretical Physics》2011,50(2):385-394
The new coherent-entangled state |z,x;θ〉 is proposed in the two-mode Fock space, which exhibits both the properties of coherent and entangled states. The completeness
relation of |z,x;θ〉 is proved by virtue of the technique of integral within an ordered product of operators. A generalized Hadamard-Fresnel
complementary transformation derived by virtue of the coherent-entangled state |z,x;θ〉, which is unitary. The new unitary operator plays the role of both Hadamard transformation for ([^(a)]1sinq-[^(a)]2cosq)(\hat{a}_{1}\sin\theta -\hat{a}_{2}\cos\theta) and Fresnel transformation for ([^(a)]1cosq+[^(a)]2sinq)(\hat{a}_{1}\cos\theta +\hat{a}_{2}\sin\theta), respectively. 相似文献
964.
Nicholas Crawford 《Journal of statistical physics》2011,142(1):11-42
Consider the classical XY model in a weak random external field pointing along the Y axis with strength ε. We study the behavior of this model as the range of the interaction is varied. We prove that in any dimension d≥2 and for all ε sufficiently small, there is a range L=L(ε) so that whenever the inverse temperature β is larger than some β(ε), there is strong residual ordering along the X direction. 相似文献
965.
Nadia Tagnaouti Sven Loebrich Frank Heisler Yvonne Pechmann Susanne Fehr Adèle De Arcangelis Elisabeth Georges-Labouesse Josephine C Adams Matthias Kneussel 《BMC neuroscience》2007,8(1):28
Background
The kelch repeat protein muskelin mediates cytoskeletal responses to the extracellular matrix protein thrombospondin 1, (TSP1), that is known to promote synaptogenesis in the central nervous system (CNS). Muskelin displays intracellular localization and affects cytoskeletal organization in adherent cells. Muskelin is expressed in adult brain and has been reported to bind the Cdk5 activator p39, which also facilitates the formation of functional synapses. Since little is known about muskelin in neuronal tissues, we here analysed the tissue distribution of muskelin in rodent brain and analysed its subcellular localization using cultured neurons from multiple life stages. 相似文献966.
Franz Wautier Sabine Wislet-Gendebien Grazyna Chanas Bernard Rogister Pierre Leprince 《BMC neuroscience》2007,8(1):104
Background
Bone marrow stromal cells and radial glia are two stem cell types with neural phenotypic plasticity. Bone marrow mesenchymal stem cells can differentiate into osteocytes, chondrocytes and adipocytes, but can also differentiate into non-mesenchymal cell, i.e. neural cells in appropriate in vivo and in vitro experimental conditions. Likewise, radial glial cells are the progenitors of many neurons in the developing cortex, but can also generate astrocytes. Both cell types express nestin, an intermediate filament protein which is the hallmark of neural precursors. 相似文献967.
968.
Julia Lindberg Peter Saetre Seiji Nishino Emmanuel Mignot Elena Jazin 《BMC neuroscience》2007,8(1):34
Background
Narcolepsy causes dramatic behavioral alterations in both humans and dogs, with excessive sleepiness and cataplexy triggered by emotional stimuli. Deficiencies in the hypocretin system are well established as the origin of the condition; both from studies in humans who lack the hypocretin ligand (HCRT) and in dogs with a mutation in hypocretin receptor 2 (HCRTR2). However, little is known about molecular alterations downstream of the hypocretin signals. 相似文献969.
Jocelyn D Laughton Philippe Bittar Yves Charnay Luc Pellerin Enikö Kovari Pierre J Magistretti Constantin Bouras 《BMC neuroscience》2007,8(1):35
Background
For a long time now, glucose has been thought to be the main, if not the sole substrate for brain energy metabolism. Recent data nevertheless suggest that other molecules, such as monocarboxylates (lactate and pyruvate mainly) could be suitable substrates. Although monocarboxylates poorly cross the blood brain barrier (BBB), such substrates could replace glucose if produced locally. 相似文献970.
Peter Sörös Jonathan Marmurek Fred Tam Nicole Baker W Richard Staines Simon J Graham 《BMC neuroscience》2007,8(1):48