Results 111 to 120 of about 347,691 (287)

A Semi-analytical Calculation Method for Time-varying Meshing Stiffness and Transmission Error of Spiral Bevel Gear

open access: yesJixie chuandong, 2019
The traditional method of calculating time-varying meshing stiffness of spiral bevel gears mostly adopted finite element static analysis method, but it needed to be calculated many times, also the single tooth meshing stiffness calculated by the mean ...
Liao Ping   +3 more
doaj  

Stoma‐Shell Nanoarchitecture for Enhanced Plasma Confinement Catalysis in Synthesis of Ethanol from CO2

open access: yesAdvanced Functional Materials, EarlyView.
High‐energy electron impact in plasma catalysis often causes excessive dissociation of active intermediates, limiting C2+ product selectivity. To address this challenge, a bio‐inspired stoma‐shell nanoarchitecture is designed to decouple electron impact from catalytic reaction zones.
Nan Zou   +5 more
wiley   +1 more source

Evaluation of LoRa Network Link Quality in Complex Urban Environments Based on Static and Dynamic Parameters

open access: yesIEEE Access
With the continuous development of IoT technology, the application of Long Rang wireless link transmission in urban environments has gradually increased, making reliable wireless link quality transmission particularly important. Traditional wireless link
Shengli Pang   +5 more
doaj   +1 more source

Comparison and Analysis of Calculation Methods for Rated Static Load of Planetary Roller Screw Mechanism

open access: yesJixie chuandong, 2022
Planetary roller screw mechanism (PRSM) is a new type of heavy duty transmission devices. Rated static load is a key indicator to reflect its carrying capacity.
Kang Xinhong   +5 more
doaj  

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

open access: yesAdvanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado   +6 more
wiley   +1 more source

直齿锥齿轮齿廓圆弧修形

open access: yesJixie chuandong, 2007
In order to minimize the fluctuation of gear transmission error and combined torsional mesh stiffness, tooth profile modification with circular curve was developed for involute bevel gears. At the same time it must ensure the variation of the load appear
陈霞   +5 more
doaj  

Tuning the Selectivity of the CO2 Reduction Reaction by Means of Synergistic Interactions in the Cu, Ag, Ce System

open access: yesAdvanced Functional Materials, EarlyView.
Multi‐metal Cu─Ce─Ag nanoparticles harness synergistic interactions to drive efficient electrochemical CO2 reduction reaction toward C2+ products at high current densities. Ag enhances CO production, Ce modulates Cu oxidation states, and together they boost *CO coverage and local pH to enhance C─C coupling, enabling record C2+ yields with suppressed ...
Nini Zhang   +9 more
wiley   +1 more source

An accurate voltage measurement method for electric field inversion in power lines with dual-stage model error reduction

open access: yesInternational Journal of Electrical Power & Energy Systems
The long transmission distance of renewable energy power and the complex line environment pose challenges for line voltage measurement. The voltage measurement method based on electric field inversion has great advantages in insulation, safety, and ease ...
Haitao Yang   +4 more
doaj   +1 more source

Broadband, Flexible, Skin‐Compatible Carbon Dots/Graphene Photodetectors for Wearable Applications

open access: yesAdvanced Functional Materials, EarlyView.
Broadband, flexible photodetectors integrating nitrogen‐rich carbon dots with single‐layer graphene on plastic substrates are demonstrated. A biocompatible chitosan–glycerol electrolyte enables efficient low‐voltage gating and on‐skin operation. The devices exhibit ultraviolet‐to‐near‐infrared response, mechanical robustness under bending, and verified
Nouha Loudhaief   +20 more
wiley   +1 more source

Surface Diffusion in SnTe‐PbTe Monolayer Lateral Heterostructures

open access: yesAdvanced Functional Materials, EarlyView.
The lateral heterostructures between 2D materials often suffer from the interdiffusion at the interfaces. Here, a surface diffusion mechanism is found to be dominating at the interfaces between semiconducting SnTe and PbTe monolayers. Atomically sharp interfaces can be achieved by suppressing this diffusion process. ABSTRACT The construction of complex
Jing‐Rong Ji   +9 more
wiley   +1 more source

Home - About - Disclaimer - Privacy