As a first step in defining optimal exit-beam profiles over a range of beam energies, simulation has been made of the x-ray tube and numbers of beam-defining parallel geometry grids, the latter being made to vary in thickness, slit separation and material composition.
Even though the garment is made of same material, depending on the design and construction such as ease, openness, slit etc., the thickness and form of air layer will be different and the ventilation effect will be differed greatly.
(d) Normalized Poynting vector P in the vicinity of the three slits obtained through full wave simulations at a wavelength λ=810 nm, using a slit width w equals to 200 nm, slit separation p=4.6 μm, sample thickness t equals to 110 nm, and assuming infinite height, h=∞.
Depending on grating and substrate materials and target applications under consideration, our method provides optimum grating parameters, i.e. slit width, grating period and thickness adaptively.
Original sewing on three tawed, slit straps, kermes pink, laced through tunnels in the thickness of wooden boards into rectangular channels on their outer face.
Then detailed ophthalmological examination were performed containing spherical refractive error, astigmatic refractive error, spherical equivalent (SE), anisometropia, best corrected visual acuity, intraocular pressure, slit lamp biomicroscopy, fundus examination, axial length, anterior chamber depth, and central corneal thickness.
Until a few years ago, the corneal parameters that were traditionally studied were central corneal thickness (CCT), corneal curvature (K), and transparency, measured using different devices such as keratometers, autokeratometers, corneal topographies, corneal tomographies, slit lamps, and confocal microscopes.
