Results 141 to 150 of about 269,123 (282)

Sparse channel estimation algorithm based on compressed sensing in MIMO NC-OFDM system

open access: yesDianxin kexue, 2016
Multiple-input multiple-output non-contiguous orthogonal frequency division multiplexing(MIMO NC-OFDM)system is a commonly used system in cognitive radio.
Enqing CHEN   +3 more
doaj   +2 more sources

Electrosynthesis of Bioactive Chemicals, From Ions to Pharmaceuticals

open access: yesAdvanced Functional Materials, EarlyView.
This review discusses recent advances in electrosynthesis for biomedical and pharmaceutical applications. It covers key electrochemical materials enabling precise delivery of ions and small molecules for cellular modulation and disease treatment, alongside catalytic systems for pharmaceutical synthesis.
Gwangbin Lee   +4 more
wiley   +1 more source

Robot machining simulation in STEP-NC machine environment [PDF]

open access: yes, 2017
This paper presents an approach for applying new programming method based on STEP-NC standard in machining operations by using industrial robots. The paper discusses about programming and simulation of industrial robots for machining using software STEP-NC Machine.
Slavković, Nikola   +3 more
openaire  

Progress of analog-hybrid computation [PDF]

open access: yes
Review of fast analog/hybrid computer systems, integrated operational amplifiers, electronic mode-control switches, digital attenuators, and packaging ...
Korn, G. A.
core   +1 more source

Microplastics from Wearable Bioelectronic Devices: Sources, Risks, and Sustainable Solutions

open access: yesAdvanced Functional Materials, EarlyView.
Bioelectronic devices (e.g., e‐skins) heavily rely on polymers that at the end of their life cycle will generate microplastics. For research, a holistic approach to viewing the full impact of such devices cannot be overlooked. The potential for devices as sources for microplastics is raised, with mitigation strategies surrounding polysaccharide and ...
Conor S. Boland
wiley   +1 more source

以准双曲面锥齿轮研齿运动参数为核心的数控化探究与实施

open access: yesJixie chuandong, 2014
As a precise machining process,traditional lapping cannot meet the demand of highly socialized mass production.For high efficiency and high quality,lapping technology of NC to lapping motion parameters as core is researched for hypoid gear.Elastic and ...
闫花茹, 田长留, 张华
doaj  

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

Powering the Future: A Cobalt‐Based Catalyst for Longer‐Lasting Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A novel N‐doped graphitic shell‐encapsulated Co catalyst reveals superior bifunctional ORR/OER activity in alkaline media, empowering outstanding liquid and quasi‐solid‐state ZAB activity. The system delivers long‐term durability, a peak power density of 127 mW cm−2 and successfully powers an LED and a mini fan.
Manami Banerjee   +10 more
wiley   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Stability of attitude control systems acted upon by random perturbations [PDF]

open access: yes
Mathematical models on stability of attitude control systems acted upon by random perturbation ...
Cohen, V.   +4 more
core   +1 more source

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