Topic
Triangular face
About: Triangular face is a research topic. Over the lifetime, 57 publications have been published within this topic receiving 507 citations.
Papers published on a yearly basis
Papers
Patent•
3M1
TL;DR: In this paper, the authors presented a retroreflective material which improved retroreflectivity at high angles of incidence, which consisted of a transparent surface layer (40) and an array of reflecting elements (20).
Abstract: The present invention provides a retroreflective material which has improved retroreflectivity at high angles of incidence. The retroreflective material comprises a transparent surface layer (40) and an array of reflecting elements (20), each of the reflecting elements (20) including a rectangular base (22) having a length L, two tetragonal faces (24,25) nearly perpendicular to each other and having a line (26) of intersection of length Y, the length Y being less than said length L, a triangular face (28) nearly perpendicular to the tetragonal faces; and a non-perpendicular triangular face (30) forming an angle Alpha with the plane perpendicular to the base, the angle Alpha being preferably about sin⁻¹ (.25/n) to sin⁻¹ (1/n), and more preferably about sin⁻¹ (.35/n) to sin⁻¹ (.9/n), where n is the refractive index of the reflecting elements (20), the perpendicular triangular face (28) and the tetragonal faces (24,25) defining an approximate cube corner therebetween and the non-perpendicular triangular face (30) and the tetragonal faces (24,25) forming a nonorthogonal corner therebetween, the reflecting elements arranged with their bases adjacent the surface layer (40).
149 citations
TL;DR: In this paper, the impedance boundary condition function has been assumed linear within each triangular face, and discontinuous changes in the impedance value are allowed from face to face, which has been validated by comparison of numerical results obtained with the model and exact solutions for scattering by spheres having uniform impedance boundary conditions.
Abstract: The impedance boundary condition has been implemented in the electric field integral equation triangular patch model for scattering from arbitrarily shaped, imperfectly conducting surfaces. The impedance boundary condition function has been assumed linear within each triangular face, and discontinuous changes in the impedance value are allowed from face to face. The procedure has been validated by comparison of numerical results obtained with the model and exact solutions for scattering by spheres having uniform impedance boundary conditions. Validation for scattering by objects with discontinuous or nonuniform impedance boundary conditions has been obtained by comparison of triangular patch models with body of revolution models.
109 citations
Patent•
17 Oct 1996
TL;DR: In this paper, a retainer is provided for a face piece that has a generally triangular face shaped rim for forming a seal over user's face when the face piece is worn.
Abstract: A retainer is provided for a face piece that has a generally triangular face shaped rim for forming a seal over user's face when the face piece is worn. The retainer is made from a stiff material and has a rim that conforms to the rim of the face piece, and is shaped to provide a loose frictional fit over the face piece. The retainer helps protect the face piece during shipping, storage, and when otherwise not in use, and can help correct minor deformation in a face piece.
42 citations
TL;DR: The combination of six Cu(II) centres with four cyclotricatechylene (ctc(6-)) ligands generates large cages with the topology of the tetrahedron.
32 citations
Patent•
10 Apr 2008TL;DR: A face contacting element for patient therapy may include a face contact element having at least one portion including at least a first gel and a skin portion containing the first gel, and the skin portion may be silicone based.
Abstract: A cushion for use with patient therapy may include a face contacting element having at least one portion including at least a first gel and a skin portion containing the first gel. The skin portion may be silicone based. The face contacting element may be substantially triangular, and at least one of the cheek regions and the lower region of the triangular face contacting element may include a concave section that curves inwardly towards the breathing chamber. The cushion may include first and second gels having one or more properties that are different from one another.
28 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 1 |
| 2019 | 3 |
| 2018 | 2 |
| 2017 | 1 |
| 2016 | 2 |
| 2015 | 5 |