A worldview, then, is described through the lens of five basic assump-tions: ontological, epistemological, axiological, rhetorical, and method-ological. Each assumption refers to a different aspect of a research approach and references that approach to reality, the researcher's role, values and
The encapsulated lens appears to be significantly stiffer and has a higher shear viscosity (p < 0.001) relative to the isolated lens matrix, reinforcing the notion that the lens exhibits viscoelastic properties (Schachar et al., …
1. Introduction. Hydrogel has been widely applied in many fields such as biology, medicine, materials science and engineering, and biomedical devices, in particular, contact lens, because of impressive characterizations including biocompatibility, optical characteristic, wettability, and mechanical strength [[1], [2], [3], [4]].Although hydrogel …
Contact lenses are thin, and curved shape plastic disks which are designed to cover the cornea . After application, contact lens adheres to the film of tears over the cornea due to the surface tension. Drug loaded contact lens have been developed for ocular delivery of numerous drugs such as β-blockers, antihistamines and antimicrobials.
Also in the encapsulated lens type retroreflective sheeting of above-described construction, at least one of the layers closer to the light-entering side (the side indicated by the arrow 40 in FIG. 3) than the sealed air layer (18), i.e., the surface-protective layer (1) and/or the printed layer(s) as shown in FIG. 3, may contain as blended ...
The theory and design method applied in this work are inspired by the CS-structured lenses proposed in recent studies 25,26,27, and we compare the performance of two different structures in this ...
The open lens type is mainly used for clothing and shoes, whereas the enclosed lens type is used for license plates, traffic cones, and other applications where …
To date, the soaking method is the common strategy employed to load active compounds mainly into hydrogel-based contact lenses [44,45,46,47,48,49,50], and to a lesser extent, into polymeric films [38,39]. The soaking method consists in immersing the lens/support in a solution/suspension/emulsion containing the drug to be loaded . …
The novel encapsulated-lens retroreflective sheeting of the invention can be made by the method of the McKenzie patent except that instead of applying the binder material from solution, the novel method uses a preformed binder film which is a tough, flexible, weather-resistant thermoplastic polymer of high molecular weight (here called a …
As the hotspot-counting method is recommended in ... digital zoom ×10). (B) One high power-field of ×400 magnification using the ×40 objective lens and ×10 eyepiece has a field diameter of 0.49 to 0.53 mm in usual light microscopes (H&E stain, digital zoom ×10). ... Encapsulated or well-circumscribed classic PTCs often show cystic changes ...
The detection system comprises an objective lens (Ob), a rotating filter wheel (FW) used as a band-pass filter (only for fluorescence imaging), a pinhole (P), a tube lens (TL), and a sCMOS camera ...
IOLs can be sewn in or glued in, or we can use the Yamane technique.". For suturing a haptic to the iris, Dr. Devgan uses 10-0 prolene. "This is a good choice because it will last and it's in a protected space," he says. "If you're sewing an IOL to the sclera, there are two options: You can fixate the haptics themselves to the ...
Capsule endoscopy is a procedure that uses a tiny wireless camera to take pictures of your digestive tract. A capsule endoscopy camera sits inside a vitamin-size capsule you swallow. As the capsule travels through your digestive tract, the camera takes thousands of pictures that are transmitted to a recorder you wear on a belt around your …
Applying artificial neural networks (ANNs) to predict the optimal process parameters, combined with other methods, e.g. genetic algorithm or particle swarm optimization, enables to rapidly obtain the optimal process parameters according to the required quality of the optical lenses. These recent methods have been used to …
... Therefore, specific lighting performance can be achieved using various geometric designs in the lens structure. As numerous studies have reported, using an …
This method produces inexpensive apertures through polymer encapsulation of ball lenses while preserving the optical quality of the lens and allowing multiple lenses to be encapsulated at once. The experimental setup shown in the top left of figure 3A was used to encapsulate 300 µm sapphire ball lenses with aperture diameters ranging from …
Well-encapsulated perovskite is expected to exhibit slight differences in frequency. Kempe et al. used an optical method to detect the way water enters encapsulated PV module [32]. This method is to evaluate the moisture resistance of edge seal material by the reaction of the Ca film and water.
Here, the Rayleigh wave model was used to estimate the viscoelastic properties because the mean thickness (T) of the lens at the measurement regions, i.e., near the apex of the lens (T encapsulated = 4.9 mm; T decaspulated = 4.1 mm), was determined to be greater than the wavelength of the induced elastic wave (λ encapsulated = ∼3.6 mm; λ ...
A different strategy to electro-mechanically deform an encapsulated-fluid lens is to use DE actuation. A possible structure is presented in Figure 4B, which was described by Carpi et al. (2011). A …
The objective of this research is to introduce a new combination of processing method, film-insert injection compression molding (FICM) for lens encapsulating …
Recent advances in pharmacological agents have led to successful treatment of a variety of retinal diseases such as neovascular age-related macular degeneration (AMD), diabetic macular oedema (DMO ...
This beam of electrons is focused on a small spot on the sample surface using the SEM objective lens. The NPs were checked between the size range (100–200) nm. 2.3.5 Preparation of chitosan encapsulated ZnO nanoparticles. Chitosan encapsulated ZnO-NPs were prepared following the method reported by Shahzadi et al. [22, 23]. …
The encapsulated lens appears to be significantly stiffer and has a higher shear viscosity (p < 0.001) relative to the isolated lens matrix, reinforcing the notion that the lens exhibits …
Hybrid polymer lenses combining multiple functions such as diffraction and refraction in a single component become possible. In this paper, a process chain to enable encapsulated and aligned optical systems with advanced functionality in a cost-efficient …
2.1 Principle of lens deformation and focal position measurement. Figure 1a shows the design of the varifocal liquid lens and the concept of its deformation. The basic idea of the deformation principle and the details of fabrication are reported in our previous paper [].The liquid lens was fabricated by dropping a liquid onto an electrode on a glass …
In microbiology, differential staining techniques are used more often than simple stains as a means of gathering information about bacteria. Differential staining methods, which typically require more than one …
The polarization control method may increase the control complexity of sensing system for simultaneous variation of multiple polarization states. The full and partial polarization-maintaining fiber methods can be used to keep the polarization state of sensing light along the optical fiber, but the additional system cost limits the application.
Introduction. Endothelial cells are the innermost layer of the flat epithelium of the heart, lymphatic vessels, and blood vessels, which can secrete vasoactive cytokines, regulate vascular tone, maintain the permeability of blood vessels, and provide a smooth surface for the blood flow [].Endothelial injury is closely associated with the development …
Waveguide lenses use this same property of a unidirectional light-wave to guide a wave of light through a lens or plane (planar waveguide), from one end to the other. ... a similar method is ...
Abstract. We have designed and implemented a compact, cost-efficient miniaturised light-sheet microscopy system based on optical microelectromechanical systems scanners and tunable lenses. The ...