Results 51 to 60 of about 11,787,568 (310)

Surgical Lamp Design Based on LED Diffuse Transmission Illumination System

open access: yesIEEE Access, 2019
In this article, we have designed a surgical light lens especially for oral surgical illumination. It provides a uniform and wide field of view for illumination during oral surgery.
Zhenmin Zhu, Xin Xu, Jie Yuan
doaj   +1 more source

The Design of Optical Routes Applications [PDF]

open access: yes, 2007
Contemporary optical fibers can deal with almost all of the unfavorable effects which are known these days. They have sufficiently low specific slump, they can handle a slump caused by OH-ions, they can restrain the multimode effect and finally they can compensate a chromatic dispersion.
Martin Kyselak, Miloslav Filka
openaire   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Ultra-Wide-Field Long-Wave Infrared System via Hybrid Refractive–Reflective Structure and Field of View Stitching

open access: yesPhotonics
To address the application demands of ultra-wide-field optical systems, we developed a compact, long-infrared waveband optical system using a field-of-view (FoV) stitching method.
Yiruo Wang, Shan Mao, Jianlin Zhao
doaj   +1 more source

STARTING POINT SELECTION IN GROUPING DESIGN METHOD FOR LITHOGRAPHIC OBJECTIVES [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
This work aims on method development for obtaining initial designs for ultraviolet (UV) and deep-ultraviolet (DUV) objectives through global search algorithm. We studied a global search based algorithm tending to obtain the feasible local minima of lens
Nenad D. Zoric   +2 more
doaj   +1 more source

Detection of second-order nonlinear optical magnetization by mapping normalized Stokes parameters [PDF]

open access: yes, 2013
A measurable magnetic (nonlocal) contribution to the second harmonic generation (SHG) of nonmagnetic materials is an intriguing issue related to chiral materials, such as biomolecules.
Larciprete, Maria Cristina   +11 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

An Analysis and Optimization of Distortion Effect Caused by Pupil Decentering in Optical Gun Scope

open access: yesPhotonics
During the use of optical gun scopes, slight movements between the human eye and the instrument can cause the pupil to offset from the optical axis, resulting in a dynamic distortion effect. This affects the accuracy and stability of aiming. Based on the
Kaiyu Yang   +4 more
doaj   +1 more source

The Evaluation of Spectral Resolution in the Optical Design of a Czerny-Turner Spectrometer

open access: yesPhotonics, 2022
In this study, we propose a method of evaluating the spectral resolution of crossed-asymmetric Czerny-Turner spectrometers by comparing the impact of different slit functions on the optical transfer function, and different slit widths, through simulation
Wenjie Shi   +5 more
doaj   +1 more source

Evaluation of the Scintillation Loss for Optical Communication Systems with Direct Detection [PDF]

open access: yes, 2006
In optical communications through the atmosphere, the evaluation of a link feasibility often requires the quantification of the scintillation penalty in terms of power loss. To find how much additional optical power is needed to reach the bit-error-rate (
Perlot, Nicolas
core  

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