Results 61 to 70 of about 650 (247)

Potential of an electric brake resistor to increase the efficiency of electric vehicles

, 2013
Electric brake resistors are well known in the domain of power electronics, railway or elevator technology to guarantee electric braking or to damp high electric power peaks. The generated heat energy, however, is usually dissipated. This work deals with
Egor Sawazki, Bernard Bäker, Johannes Lieb, Martin Brüll   +3 more
core   +1 more source

Hybrid Metal–Carbon Ink for Printed Stretchable Temperature Sensors

Advanced Engineering Materials, EarlyView.
We prepare conductive inks for temperature sensing with silver flakes and carbon or graphite flakes in a silicone elastomer matrix. Silver dominates the temperature‐dependent conductivity, while the carbon filler network ensures the stability of the conductive pathways and retains function under strain.
Makara Lay, Xue Bai, Thomas Kister, Tobias Kraus   +3 more
wiley   +1 more source

Research on energy conversion of a new electro-hydraulic hybrid drive system for pedestrian overpass elevator device

工程科学与技术
ObjectiveThe electric energy is transferred into positive mechanical energy by overcoming passengers' gravitational energy in the upward cabins. And the electric energy is transferred into negative mechanical energy to balance passengers' gravitational ...
WU Ziying, CHAO Guoqiang, WANG Jingnan, WU Haitao, ZHANG Yuxuan   +4 more
doaj  

Electric drive of elevators for borehole geophysical survey complex

, 2015
Актуальность работы обусловлена необходимостью создания асинхронных электроприводов подъемников комплексов геофизического исследования скважин. Цель работы: исследование систем преобразователь частоты - асинхронный двигатель, учитывающих особенности ...
Чернышев, Александр Юрьевич, Чернышев, Игорь Александрович, Журиков, Сергей Александрович   +2 more
core  

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Educational System for Automated Testing of the Electric Elevator Drive

Contemporary Issues in Economy and Technology - CIET 2024 - conference proceedings
The paper describes an educational system for partially automated testing of the elevator’s electric drive. The system consists of an elevator model with a three-phase cage induction motor, a control panel, a frequency converter and a dynamic test system. System control can be operated manually, remotely or automatically, using relay and PLC techniques
Lovrić, Ivica, Jenčić, Silvano, Troskot, Višnja, Zrno, Vjekoslav   +3 more
openaire   +4 more sources

POKRETNI ELEVATOR

, 2018
U ovom radu prikazan je postupak razvoja koncepata, odabira optimalne izvedbe i proračuna konstrukcije i pogonskog sklopa pokretnog elevatora za transport plastičnih cijevi. Uvodni dio opisuje rad pokretnog elevatora za transport plastičnih cijevi, nakon
Matijaščić, Franjo
core  

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

Mechanical Behavior and Fracture Mechanisms of MXene/PVDF Nanocomponsites: In Situ Characterization and Multiscale Analysis

Advanced Functional Materials, EarlyView.
Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou, James FitzPatrick, Li Meng, Kateryna Shevchuk, Ahmad Najafi, Yury Gogotsi   +5 more
wiley   +1 more source

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

Advanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo, Mi Jeong Lee, Hyun Wook Kang, Seonhee Byeon, Soo‐Kyoung Choi, Nakwon Choi, Seung‐Woo Cho, Yoonhee Jin   +7 more
wiley   +1 more source