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Wriggling Microtubules Help Explain Coupling of “Active” Defects and Curvature（图）
Wriggling Microtubules Explain Coupling Active Defects Curvature
2017/10/26
Imagine a tiny donut-shaped droplet, covered with wriggling worms. The worms are packed so tightly together that they must locally line up with respect to each other. In this situation, we would say t...
Moderate folic acid supplementation and MTHFD1-synthetase deficiency in mice, a model for the R653Q variant, result in embryonic defects and abnormal placental development
birth defects developmental defects embryo folic acid high folate methylenetetrahydrofolate reductase MTHFD1 placenta
2018/12/19
Background: Moderately high folic acid intake in pregnant women has led to concerns about deleterious effects on the mother and fetus. Common polymorphisms in folate genes, such as methylenetetrahydro...
Faulty bioelectric signal responsible for facial defects caused by rare genetic disorder
Faulty bioelectric signal facial defects genetic disorder
2016/2/23
Tufts University biologists have discovered the bioelectric mechanism by which the rare genetic disorder Andersen-Tawil syndrome (ATS) causes facial abnormalities, a finding that could lead to prevent...
Formulas for the force dipole interaction of surface line defects in homoepitaxy
Formulas for the force surface line defects homoepitaxy
2015/10/16
Using asymptotics, we derive explicit, simplified formulas for integrals representing the force dipole interaction energy per unit length between line defects (steps) of the same sign that form pertur...
UNIVERSITY PARK, Pa. -- Understanding how atoms "glide" and "climb" on the surface of 2D crystals like tungsten disulphide may pave the way for researchers to develop materials with unusual or unique ...
Dissecting the cellular and molecular mechanisms mediating neurofibromatosis type 1 related bone defects
Mouse model Osteoclasts Transforming growth factor-beta1
2015/5/21
Skeletal manifestations including short stature, osteoporosis, kyphoscoliosis, and tibial dysplasia cumulatively affect approximately 70% of patients with neurofibromatosis type 1 (NF1). Tibial pseuda...
Geometrical defects in two-dimensional melting of many-particle Yukawa systems
Geometrical defects two-dimensional melting many-particle Yukawa systems Plasma Physics
2012/5/17
We perform Langevin dynamics simulations and use polygon construction method to investigate two-dimensional (2D) melting and freezing transitions in many-particle Yukawa systems. 2D melting transition...
Excitation of plasmons in two-dimensional electron gas with defects by microwaves: Wake-field method
plasmons two-dimensional electron gas microwaves Wake-field method
2011/8/17
Abstract: We develop an analytical method to find plasmons generated by microwaves in a two-dimensional electron gas with defects. The excitations are expressed in terms of the wake field of a charged...
Strain-tuning of quantum dot optical transitions via laser-induced surface defects
Strain-tuning quantum dot optical transitions laser-induced surface defects
2011/8/17
Abstract: We discuss the fine-tuning of the optical properties of self-assembled quantum dots by the strain perturbation introduced by laser-induced surface defects. We show experimentally that the qu...
On the motion of point defects in relativistic fields
the motion of point defects relativistic fields Mathematical Physics
2011/9/2
Abstract: We inquire into classical and quantum laws of motion for the point charge sources in the nonlinear Maxwell-Born-Infeld field equations of classical electromagnetism in flat and curved Einste...
Field theories with defects and the centre functor
Field theories defects the centre functor Quantum Algebra
2011/8/24
Abstract: This note is intended as an introduction to the functorial formulation of quantum field theories with defects. After some remarks about models in general dimension, we restrict ourselves to ...
Defects in the discrete non-linear Schrodinger model
Defects non-linear Schrodinger model High Energy Physics - Theory
2011/7/27
Abstract: The discrete non-linear Schrodinger (NLS) model in the presence of an integrable defect is examined. The problem is viewed from a purely algebraic point of view, starting from the fundamenta...
Integrable defects in affine Toda field theory and infinite dimensional representations of quantum groups
Integrable defects affine Toda field theory infinite dimensional representations quantum groups
2011/3/3
Transmission matrices for two types of integrable defect are calculated explicitly, first by solving directly the nonlinear transmission Yang-Baxter equations.
Grassmanian and Bosonic Thirring Models with Jump Defects
Grassmanian Bosonic Thirring Models with Jump Defects
2010/12/28
In this paper we discuss the Lax formulation of the Grassmanian and Bosonic Thirring
models in the presence of jump defects. For the Grassmanian case, the defect is described by
B¨acklund transforma...
Detecting and distinguishing topological defects in future data from the CMBPol satellite
distinguishing topological defects the CMBPol satellite
2011/1/11
The proposed CMBPol mission will be able to detect the imprint of topological defects on the cosmic microwave background (CMB) provided the contribution is sufficiently strong. We quantify the detecti...