Results 21 to 30 of about 247,868 (255)

Comparative Study of Thermal Lens Effect in End Pulsed-Pumped Ceramics and Single Crystal Yb3+ YAG- Cr4+ YAG Passively Q-switched Microchip Laser. [PDF]

open access: yesJournal of Bioscience and Applied Research, 2016
In this work, different thermal lens focal lengths with different pumping repetition rates for ceramic and single crystal Yb:YAGare calculated for controlling the thermal focal length without using additional optical elements .
Y. S. Nada, S. M. A. Maize
doaj   +1 more source

Calculation of 3D Coordinates of a Point on the Basis of a Stereoscopic System

open access: yesOpen Engineering, 2018
The solution of three-dimensional (3D) coordinate calculation task for a material point is considered. Two flat images (a stereopair) which correspond to the left and to the right viewpoints of a 3D scene are used for this purpose.
Mussabayev R.R.   +4 more
doaj   +1 more source

Adaptive Lenses Based on Soft Electroactive Materials

open access: yesApplied Sciences, 2018
Soft electroactive materials including dielectric elastomer actuators (DEAs) and polyvinyl chloride (PVC) gels have recently been extensively investigated. These smart materials can effectively respond to an electric field, resulting in shape deformation.
Hongwen Ren, Shin-Tson Wu
doaj   +1 more source

Determination of acoustic field parameters for high-frequency focusing ultrasonic transducers up to 100 MHz

open access: yesActa Acustica
High-frequency focused ultrasonic technology offers distinct advantages in microstructural inspection and high-resolution imaging owing to its short wavelength and superior acoustic field-focusing capability.
Lu Huanran   +6 more
doaj   +1 more source

Vari-Focal Light Field Camera for Extended Depth of Field

open access: yesMicromachines, 2021
The light field camera provides a robust way to capture both spatial and angular information within a single shot. One of its important applications is in 3D depth sensing, which can extract depth information from the acquired scene.
Hyun Myung Kim   +5 more
doaj   +1 more source

Analysis of the influence of dispersion of metamaterials in a cylindrical Luneberg lens with extended focus

open access: yesФизика волновых процессов и радиотехнические системы, 2020
Cylindrical Lunebeg lenses allow azimuthal scanning in a wide sector of angles. The article discusses a cylindrical Luneberg lens with an out-of-focus parallel printed circuit boards made of thin fiberglass (FR-4) with an etched H-shaped metamaterial ...
Yuri G. Pasternak   +3 more
doaj   +1 more source

Therapeutic Apheresis for Intravenous Methylprednisolone‐Refractory Neuromyelitis Optica Spectrum Disorder: Clinical and Radiological Outcomes in a Single‐Center Case Series

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi   +5 more
wiley   +1 more source

Copper laser patterning on a flexible substrate using a cost-effective 3D printer

open access: yesScientific Reports, 2022
We studied the cost effective direct laser patterning of copper (Cu) on thin polyimide substrates (PI thickness: 12.5–50 µm) using a 405 nm laser module attached to an inexpensive 3D printer.
Sajal Chakraborty   +2 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

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