Paraxial

Some articles on paraxial:

Paraxial Mesoderm - Formation and Somitogenesis
... The paraxial and other regions of the mesoderm are thought to be specified by bone morphogenetic proteins, or BMPs, along an axis spanning from the center to the sides of the body ... these pathways provide the initial specification of the paraxial mesoderm and maintain this identity ... extends from the base of the head to the tail with it extend thick bands of paraxial mesoderm ...
Somites and Their Derivatives
... mesoderm that is lateral to (at the side of) the neural tube is called paraxial mesoderm ... The paraxial mesoderm is initially called the “segmental plate” in the chick embryo or the “unsegmented mesoderm” in other vertebrates ... (to eventually become the neural tube), the paraxial mesoderm separates into blocks called somites ...
Paraxial Approximation
... In geometric optics, the paraxial approximation is a small-angle approximation used in Gaussian optics and ray tracing of light through an optical system (such as a lens) ... A paraxial ray is a ray which makes a small angle (θ) to the optical axis of the system, and lies close to the axis throughout the system ... (for θ in radians) for calculation of the ray's path and The paraxial approximation is used in Gaussian optics and first-order raytracing ...
Helmholtz Equation - Paraxial Approximation
... Further information Slowly varying envelope approximation The paraxial approximation of the Helmholtz equation is where is the transverse part of the Laplacian ... In the paraxial approximation, the complex magnitude of the electric field E becomes where A represents the complex-valued amplitude of the electric field, which modulates the sinusoidal plane ... The paraxial approximation places certain upper limits on the variation of the amplitude function A with respect to longitudinal distance z ...
Paraxial Mesoderm - Derived Tissues - Head Mesoderm
... A particular kind of tissue deriving from the paraxial mesoderm is the head mesoderm ... This tissue derives from the unsegmented paraxial mesoderm and prechordal mesoderm ... The head mesoderm forms through a separate signaling circuit than the segmented paraxial mesoderm, though also involving BMP and FGF signaling ...