Results 81 to 90 of about 15,099,737 (280)

Agreement and repeatability of four different devices to measure non-invasive tear breakup time (NIBUT) [PDF]

open access: yesContact Lens and Anterior Eye, 2019
Since tear film stability can be affected by fluorescein, the Dry Eye Workshop (DEWSII) recommended non-invasive measurement of tear breakup time (NIBUT). The aim of this study was to investigate the agreement and repeatability of four different instruments in the measurement of NIBUT.72 participants (mean 24.2 ± 3.6 years) were recruited for this ...
Bandlitz S   +7 more
openaire   +3 more sources

A model of tear-film breakup with continuous mucin concentration and viscosity profiles

open access: yes, 2019
We propose an alternative to the prevailing framework for modelling tear-film breakup, which posits a layered structure with a mucus layer next to the cornea and an aqueous layer on top.
Vivek, Atul S   +4 more
core   +1 more source

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi   +5 more
wiley   +1 more source

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

open access: yesAdvanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan   +4 more
wiley   +1 more source

Ocular Surface Cooling Corresponds to Tear Film Thinning and Breakup [PDF]

open access: yes, 2015
PurposeTo investigate the relationship between ocular surface temperature (OST) and tear film thinning and breakup.MethodsSimultaneous imaging of OST and fluorescein tear thinning and breakup (FTBU) was performed on 20 subjects.
Selvin, Steve   +3 more
core   +1 more source

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

open access: yesAdvanced 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   +12 more
wiley   +1 more source

Analysis of Accuracy of Tear Breakup Time (TBUT) and Non-invasive TBUT

open access: yesThe Korean Journal of Vision Science, 2017
Purpose: To compare the accuracy of invasive and non-invasive tear breakup time methods Methods: Tear breakup time (TBUT) was measured by using a fluorescein strip (Haag-Streit Strips, Haag-Streit, USA) and non-invasive tear break up time (NIBUT) was measured by using Keratograph 5M (K5M), Wavefront Analyzer (KR-1W), and Auto refraction keratometry (KR-
Yun-Jung Lee, Jeong-Mee Kim, Koon-Ja Lee
openaire   +1 more source

EVALUATION OF MEIBOMIAN GLANDS LOSS AND TEAR FILM BREAKUP TIME IN PATIENTS WITH VARYING PERIOD OF SOFT CONTACT LENSES WEARING [PDF]

open access: yes, 2019
Purpose: To determine whether the wearing time of contact lenses affects the condition of the meibomian glands and the tear film breakup time. Material and methods: This is a cross-sectional study involving 150 eyes ( 75 patients) with an age between 18
A. Vassilev   +5 more
core   +1 more source

The Role of Ultra‐Thin Passive Films and Organic Adsorbates on Aluminum Chips for a Friction‐Induced Solid‐State Recycling Process

open access: yesAdvanced Engineering Materials, EarlyView.
Despite benefits to storage stability and handleability of aluminum scrap, octadecyl phosphonic acid (ODPA) SAMs reduce the tensile strength of wires produced using friction‐induced recycling. Etching and methyl diphosphonic acid (MDPA) coatings, however, have little effect.
Timothy D. Goller   +3 more
wiley   +1 more source

Tear film thickness and stability following femtosecond-assisted laser in situ keratomileusis: a comparison of high- and low-myopia

open access: yesFrontiers in Medicine
BackgroundTo investigate the relationship between tear film thickness, corneal epithelial thickness, tear film breakup location, and dry eye in patients with high- and low-myopia undergoing femtosecond-assisted laser in situ keratomileusis (FS-LASIK ...
Yan Li   +5 more
doaj   +1 more source

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