Results 41 to 50 of about 1,439,384 (243)

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Rigid contact lens design equivalencies of overall diameter and axial edge lift: individual variations [PDF]

, 1993
We compared the effects on rigid contact lens tear pump efficiency of changes in lens overall and optic zone diameter and of changes in lens axial edge lift by measuring corneal oxygen uptake on the right eyes of six human subjects after 5 min of both ...
Carney, Leo G., Hill, Richard M., Fink, Barbara A.   +2 more
core  

OPTICAL ILLUSION DESIGN BASED ON FOUR CONVEX LENSES SYSTEM AND CLOAKING AREA CHARACTERIZATION

Jurnal Pendidikan Fisika Indonesia, 2018
A set up of optical illusion based on 4f system and characterization of cloaking area have been carried out. The cloaking area is an area where the object is placed on the area as if it disappears from view; the set-up of cloaking area is located at the ...
I. T. Sugiarto, M. D. Birowosuto, I. Isnaeni, W. P. Tresna   +3 more
doaj   +1 more source

Analysis of kinematics of tool and work piece contact during lens processing

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2020
Using the first axiom of statics for equilibrium of a two forces system applied to points of a solid body, it was verified, that the pressure in the zone of contact of a tool with a lens during its abrasive processing by the grinding-free method is ...
A. S. Kozeruk, Y. L. Malpica, A. A. Sukhotski, V. I. Yurynok, M. I. Filonova, V. I. Shamkalovich   +5 more
doaj   +1 more source

Aerial Projection 3D Display Based on Integral Imaging

Photonics, 2021
We proposed an aerial projection 3D display based on integral imaging. It is composed of a projector, a lens-array holographic optical element (HOE), and two parabolic mirrors.
Wu-Xiang Zhao, Han-Le Zhang, Qing-Lin Ji, Huan Deng, Da-Hai Li   +4 more
doaj   +1 more source

3D‐Printed Titanium Gyroid Scaffold Structure Integrated With Tough Hybrid Materials for Cartilage Replacement

Advanced Engineering Materials, EarlyView.
This study proposes a potential device design for joint cartilage replacement. Silica‐polytetrahydrofuran (SiO2‐PolyTHF) hybrids with customizable mechanical properties were developed to mimic the characteristics of a natural meniscus. These were synthesized through a two‐pot sol–gel hybrid process.
Yu‐Chien Lin, Gloria R. Young, Francesca Tallia, Reece N. Oosterbeek, Shaaz Ghouse, Edward Spiers, Nupur Kohli, Tom Briggs, Marc Masen, Siwei Li, Ren‐Jei Chung, Jonathan R. T. Jeffers, Julian R. Jones   +12 more
wiley   +1 more source

Rigid contact lens design: effects of overall diameter changes on tear pump efficiency [PDF]

, 1991
The effects of rigid contact lens overall diameter changes on tear pump efficiency were studied for lenses of 7 overall diameters (8.2 to 10.0 mm in 0.3-mm steps) while maintaining all other parameters (including a 7.4-mm optic zone diameter) constant ...
Carney, Leo G., Hill, Richard M., Fink, Barbara A.   +2 more
core  

Chromatin remodeling enzyme Brg1 is required for mouse lens fiber cell terminal differentiation and its denucleation [PDF]

, 2010
Background: Brahma-related gene 1 (Brg1, also known as Smarca4 and Snf2 beta) encodes an adenosine-5'-triphosphate (ATP)-dependent catalytical subunit of the (switch/sucrose nonfermentable) (SWI/SNF) chromatin remodeling complexes.
He, Shuying, Metzger, Daniel, Wolf Louise, Bharesh K Chauhan, Chambon, Pierre, Ruth Ashery-Padan, Nakai, Akira, Zavadil, Jiri, Cveklova Kveta, Daniel Metzger, Ernst R Tamm, Chauhan Bharesh K, Metzger Daniel, Melinda K Pirity, Wang Wei-Lin, Chauhan, Bharesh K., Pierre Chambon, Cveklova, Kveta, Cvekl Ales, Akira Nakai, Ales Cvekl, Pirity Melinda K, Wolf, Louise, Tamm, Ernst R., Ashery-Padan, Ruth, Cvekl, Ales, Chambon Pierre, Wang, Wei-Lin, Wei-Lin Wang, Ashery-Padan Ruth, Nakai Akira, He Shuying, Shuying He, Kveta Cveklova, Zavadil Jiri, Louise Wolf, Tamm Ernst R, Jiri Zavadil, Pirity, Melinda K.   +38 more
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Agreement between Eyestar and IOLMaster700 in ocular biometric measurements in a Brazilian population [PDF]

Revista Brasileira de Oftalmologia
Objective: To evaluate the agreement between the Eyestar900 and IOLMaster700 for biometric measurements and assess their interchangeability. Methods: This retrospective study analyzed the following parameters: anterior keratometry, axial length ...
Luís Armando Vitorino Alves de Souza Gondim, Roberta Kern Menna Barreto, José Maurilio Tavares de Lucena, Bernardo Kaplan Moscovici, Ivan Corso Teixeira   +4 more
doaj   +2 more sources