Results 91 to 100 of about 12,297 (303)

Multi‐Enzyme Mimetic Molybdenum Nitride Nanozymes Reshape Subgingival Microenvironment for Synergistic Periodontitis Therapy via ROS Regulation and Microbiome Remodeling

Advanced Science, EarlyView.
ABSTRACT Periodontitis, a chronic inflammatory disease initiated and sustained by plaque microorganisms and host immune response, remains an intractable oral disease and a leading cause of tooth loss worldwide. Traditional mechanical debridement and adjunctive antibiotic or antiseptic therapy often shows limited efficacy due to the complex anatomical ...
Weiyu Zhang, Zhongwei Yang, Yunfan Zhang, Longwei Wang, Xiaoyu Zhang, Jiahui Mao, Yizhi Dai, Yifan Yuan, Mingge Wang, Xin Yang, Xin Yu, Jing Liu, Chunying Chen   +12 more
wiley   +1 more source

DOTA‐grafted Cationic Polymers Behaving as Powerful Macromolecular Resistance‐reversal Agents (MRRAs) Combating Against New Delhi Metallo‐β‐lactamase (NDM)‐producing Bacteria

Advanced Science, EarlyView.
Two macromolecular resistance‐reversal agents (MRRAs)—linear (MRRAL) and nanostructured (MRRAN) polymers were fabricated by integrating DOTA motifs into tunable polycationic scaffolds. MRRAs exhibit superior antibacterial potency once combined with meropenem (MEM) through (i) bacterial membrane disruption via localized cationic charge and ...
Ruixue Wang, Jian Zhang, Yun li, Liping Qiao, Zhuorui Dong, Dandan Cui, Peirong Bai, Liping Li, Bing Cao, Ruiping Zhang   +9 more
wiley   +1 more source

Grid Impact of Unbalanced Phase Integration of PV Generation, Electrified Mobility, and Heating in LV Distribution Grids

IEEE Access
Low-carbon technologies (LCTs) such as Electric vehicles (EVs), heat pumps (HPs), and PV systems increase phase unbalance due to uneven phase distribution. Phase unbalance can lead to overheating, suboptimal capacity utilization, and power losses.
Yme Wesseling, Nikolaos Damianakis, Gautham Ram Chandra Mouli, Pavol Bauer   +3 more
doaj   +1 more source

Design of a High-Performance High-Pass Generalized Integrator Based Single-Phase PLL

, 2016
Grid-interactive power converters are normally synchronized to the grid using phase-locked loops (PLLs). The performance of the PLLs is affected by the non-ideal conditions in the sensed grid voltage such as harmonics, frequency deviations and dc offsets
John, Vinod, Kulkarni, Abhijit
core   +1 more source

Co-ordinated Control Strategy for Hybrid Wind Farms with PMSG and FSIG under Unbalanced Grid Voltage Condition [PDF]

, 2016
This paper investigates a control strategy for a wind farm with the direct-driven permanent-magnet synchronous generators (PMSG)-based wind turbines and the fixed speed induction generators (FSIG)-based wind turbines under unbalanced grid voltage ...
Chen, Zhe, Chen, Zhiqian, Hu, Weihao, Yao, Jun, Zeng, Xin, Zhou, Te   +5 more
core   +2 more sources

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Power quality improvement by grid-connected inverters driven by the three-phase damping control strategy operated in different modes

International Journal of Electrical Power & Energy Systems
The increased demand for renewable energy and electrification of transportation such as electric vehicles can lead to power quality problems in the low voltage distribution grids.
Dimitar V. Bozalakov, Sajid Qazi, Jeroen D.M. De Kooning, Lieven Vandevelde   +3 more
doaj   +1 more source

An Improved Centralized Control Structure for Compensation of Voltage Distortions in Inverter-Based Microgrids

Energies, 2018
Recently, increased use of non-linear loads has intensified the harmonic distortion and voltage unbalance in distribution systems. Inverter Based Distributed Generators (IBDGs) can be employed as distributed compensators to improve the power quality, as ...
Morteza Afrasiabi, Esmaeel Rokrok
doaj   +1 more source

Mixed-integer-linear-programming-based energy management system for hybrid PV-wind-battery microgrids: Modeling, design, and experimental verification [PDF]

, 2017
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Díaz, Nelson L., Graells Sobré, Moisès, Guerrero, Josep M., Luna, Adriana C., Vasquez, Juan C.   +4 more
core   +3 more sources

Predictive current control of grid-connected voltage source converters during network unbalance

IET Power Electronics, 2010
This study proposes an improved predictive current control (PCC) scheme for grid-connected voltage source converters (GC-VSCs) during network voltage unbalance. The control scheme is based on space vector modulation (SVM) and implemented in the positive synchronous reference frame without current-sequential decomposition.
Hu, J.B., He, Y.K., Xu, Lie, Zhi, D.W.
openaire   +2 more sources