A method has been developed in which cineradiography is used for the assessment of the opening angle of implanted Bjork-Shiley prosthetic valves. The method is based on the fact that the ring and the disc, which are known to be circular, appear to be elliptical on x-ray films. The spatial position of the valve can be retrieved from the characteristics of these ellipses when vectoranalysis is ap...

Objective: To explore the circular capsulorhexis method and its clinical effect in phacoemulsification of hypermature cataract without staining. Methods: In this prospective randomized case-control study, 22 patients (22 eyes) with were randomly divided into a staining agent group (10 cases, 10 non-staining (12 12 eyes). Both groups underwent foldable intraocular lens implantation under topical...

Salivary megaduct with stricture is characterized by recurrent pain, cheek and parotid swelling. We report on a case of circular web type fibrotic stenosis accompanying large found sialendoscopy. Although, sialendoscopy enabled minimally invasive diagnosis treatment stenotic lesion the Stensen’s duct, bougination not effective for severe stenosis. Transoral sialodochoplasty assisted can be an a...

Non-circular gears can maintain rotational motions of general and implement all varying the cam. They adjust angular velocity driven gear according to operating conditions make precise changes in motion. The design non-circular has not been sufficiently studied because their particularity complex methods unlike spur gears. In gutting section Squid Belly Opening Gutting Machine (SBOGM), generate...

In the present research, behavior of SPSPs with two rectangular openings and effect of strengthening different subpanels with various stiffener arrangements is investigated. In the next step, to investigate the effect of changing opening width on the trend of degradation shear stiffness and strength of the panel, the opening width is changed. In the third step, to study the effect of changing o...

Circular polarized light is utilized in communication and display technologies a major challenge to develop systems that can be switched between left right circular luminescence with high degrees of polarization enable multiple addressable stable states. Luminescent dyes Liquid Crystal (LC) cholesteric phases are attractive generate, amplify modulate circularly (CPL). In the present study, we e...

Industry 4.0 (I4.0), Sustainability, and the Circular Economy are recently popularized concepts likely to redefine how economies industries work. This paper, as opening piece of this Special Issue, consists a bibliometric study 393 articles linking Issue’s key themes: 4.0, Sustainability Economy. Given that is still recent area literature, fact it already commands fast-growing number publicatio...