Results 111 to 120 of about 23,261,811 (330)

Research on Key Technologies of Traction System Based on Power Electronic Transformer

open access: yesKongzhi Yu Xinxi Jishu, 2017
This paper proposed a main circuit structure of a new traction drive system based on power electronic transformer (PET). Compared with traditional traction drive system, the new transmission system has lighter weight and smaller size , has more flexible ...
SONG Pinggang, GE Wang, ZHU Weichang
doaj  

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Temperature-driven volume transition in hydrogels: phase--coexistence and interface localization

open access: yes, 2016
We study volume transition phenomenon in hydrogels within the framework of Flory-Rehner thermodynamic modelling; we show that starting from different models for the Flory parameter different conclusions can be achieved, in terms of admissible coexisting ...
Cirillo, Emilio N. M.   +2 more
core   +4 more sources

Materials and System Design for Self‐Decision Bioelectronic Systems

open access: yesAdvanced Materials, EarlyView.
This review highlights how self‐decision bioelectronic systems integrate sensing, computation, and therapy into autonomous, closed‐loop platforms that continuously monitor and treat diseases, marking a major step toward intelligent, self‐regulating healthcare technologies.
Qiankun Zeng   +9 more
wiley   +1 more source

Spur-Gear-System Efficiency at Part and Full Load [PDF]

open access: yes
A simple method for predicting the part- and full-load power loss of a steel spur gearset of arbitrary geometry supported by ball bearings is described. The analysis algebraically accounts for losses due to gear sliding, rolling traction, and windage in ...
Anderson, N. E., Loewenthal, S. H.
core   +1 more source

Advancements in TLP Bonding for Power Electronics Die‐Attach Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Transient Liquid Phase (TLP) bonding is gaining traction as a lead‐free die‐attach technology in power electronics packaging. This review examines the state of TLP bonding, its key elements, reliability aspects, and practical limitations. This review also highlights emerging trends, such as nanostructured interfaces, that may improve scalability of TLP
Fatin Battal   +4 more
wiley   +1 more source

Study on energy consumption performance of permanent magnet synchronous traction system for trains on Ningbo metro line 4

open access: yes机车电传动, 2023
This paper was intended to analyze the energy consumption data of metro trains under different working conditions primarily relying on experiments and applying simulation as the supplement.
SU Hanchong   +5 more
doaj  

Energy flows on smallholder farms in the Ethiopian highlands [PDF]

open access: yes, 2011
Studies energy flows on typical smallholder farms around Debre Zeit and Debre Berhan in the Ethiopian highlands, describing the farming system resource base and intermediate roles of resources such as animal traction.
Goe, M.R., Gryseels, Guido
core  

Microwave‐Assisted Aqueous Synthesis of Gelatin‐Norbornene for Hydrogel Crosslinking and Bioprinting

open access: yesAdvanced Materials Technologies, EarlyView.
A microwave‐assisted reaction is utilized to synthesize gelatin‐norbornene (GelNB), achieving a high degree of norbornene functionalization while reducing the macromer's upper critical solution temperature. The resulting GelNB macromer has high solubility at room temperature, facilitating light‐based 3‐dimensional (3D) printing of thiol‐norbornene ...
Jonathan B. Bryan, Chien‐Chi Lin
wiley   +1 more source

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