Results 51 to 60 of about 20,113 (246)

Four-port bimanual phaco-chop fragmentation for dropped nucleus using standard phaco chopper and assistant handheld 23G endoilluminator

open access: yesOman Journal of Ophthalmology
PURPOSE To describe a bimanual method for management of posteriorly dislocated large nucleus fragment using standard chopper. METHODS A 23G assistant handheld endoilluminator was used as light source through inferonasal self-sealing port, while the large
Sanjeev Kumar Dhoot
doaj   +1 more source

Multi‐Biomimetic Structural Colors Inspired by Pearls and Bird Feathers

open access: yesAdvanced Materials, EarlyView.
A dual‐biomimetic strategy mimicking pearls and bird feathers is proposed to construct full‐gamut structural colors. By integrating a non‐strictly periodic inorganic multilayer architecture with tunable light absorbers, this facile approach circumvents the complex fabrication of traditional 1D photonic crystals, offering immense potential for cosmetics,
Zhiwei Wang   +12 more
wiley   +1 more source

Impact des émissions EM conduites produites par un hacheur abaisseur

open access: yesRevue des Énergies Renouvelables, 2017
L'utilisation variée, dans la vie quotidienne, de dispositifs d'électronique de puissance notamment les convertisseurs statiques est devenue de plus en plus courante.
S. Rezini, Z. Azzouz
doaj  

Speed/Torque Estimation and Control of a DC Machine in Four Quadrants Operation Modes

open access: yesمجلة النهرين للعلوم الهندسية, 2018
Transfer function characteristics of a DC machine are used in this paper to estimate speed and torque in four quadrant operation modes.  Estimation speed and torque control based on a DC machine transfer function is implemented by measuring the DC ...
Rakan Khalil Antar
doaj   +1 more source

Defect‐Driven Charge Separation in Ba‐Doped SrTiO3: Correlating Photoelectrochemical Performance With Dye‐Selective Photocatalysis

open access: yesAdvanced Materials Interfaces, EarlyView.
Ba‐doped SrTiO3 perovskites establish a direct correlation between photoelectrochemical activity and photocatalytic performance. Optimized Ba0.5Sr0.5TiO3 exhibits enhanced charge separation, photocurrent generation, and visible‐light‐driven dye degradation through defect‐induced oxygen vacancies and lattice distortion.
Sagar A. Nikam   +6 more
wiley   +1 more source

CUSTOM CULTURE PADA MOTOR CHOPPER [PDF]

open access: yes, 2019
Ketertarikan dengan dunia custom culture menumbuhkan rasa ke ingin tahuan yang lebih untuk selalu tahu seluk-beluk di dalamnya dan perkembangan yang ada di sekitarnya.
Prayudi, Ricky
core  

3D‐Printed Dual‐Doped Ag2Se‐Based Thermoelectric Films With Enhanced Thermal Stability

open access: yesAdvanced Materials Technologies, EarlyView.
Sb–Se dual doping enhances the thermal stability of Ag2Se‐based thermoelectric systems. The compositionally tuned nano‐ink is printed into flexible films by direct ink writing (DIW), retaining improved thermoelectric properties after annealing up to 400°C.
Ahasun Habib Hridoy   +8 more
wiley   +1 more source

Research on Soft-switching Choppers in Maglev Trains

open access: yes机车电传动, 2014
Optimal design for choppers in maglev trains were focused on with active auxiliary commutation circuit (AACC) techniques.Based on the operation principle and mathematical resonance analysis, it was shown that the resonance procedure of the proposed ...
LI   +4 more
doaj  

DESIGN OF SMART SENSORS FOR DETECTION OF PHYSICAL QUANTITIES [PDF]

open access: yes, 2010
Microsystems and integrated smart sensors represent a flourishing business thanks to the manifold benefits of these devices with respect to their respective macroscopic counterparts.
DEI, MICHELE
core  

Recent Advances in Light‐Addressable Electrochemistry for Spatially Resolved Applications

open access: yesAdvanced Materials Technologies, EarlyView.
This comprehensive review highlights light‐addressable electrochemistry as a powerful tool that uses light to control localized chemical reactions on unstructured semiconductor surfaces. The work evaluates advanced strategies to optimize electrode materials for enhanced spatial resolution and stability. Furthermore, it showcases diverse applications in
Nhi Trang Vo   +2 more
wiley   +1 more source

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