Results 71 to 80 of about 75,436 (257)

Student’s attendance system using QR code [PDF]

open access: yes, 2014
The purpose of this project is to develop a system that can record the presence of students using QR code. Previously, teachers needed to use paper to record student attendance.
Ariffin, Arihasnida   +4 more
core   +1 more source

Stabilization of Single Metal Atoms on Graphitic Carbon Nitride: Synthetic Strategies and Emerging Applications

open access: yesAdvanced Science, EarlyView.
This review highlights recent advancements in stabilizing single metal atoms on graphitic carbon nitride emphasizing innovative synthesis strategies and emerging applications in electrocatalysis, photocatalysis and organic transformations, along with key challenges and future perspective. Abstract Emerging as a new frontier in catalysis science, single‐
Wenyao Zhang   +6 more
wiley   +1 more source

Probabilistic Evaluation of Transient Stability of a Power System Incorporating a Unified Power Flow Controller

open access: yesJournal of King Saud University: Engineering Sciences, 2003
This paper presents a probabilistic based approach to evaluate transient stability of power systems incorporating a Unified Power Flow Controller (UPFC).
Saleh Aboreshaid
doaj   +1 more source

Torsional Interaction Studies on a Power System Compensated by SSSC and Fixed Capacitor [PDF]

open access: yes, 2003
In this paper, a static synchronous series compensator (SSSC), along with a fixed capacitor, is used to avoid torsional mode instability in a series compensated transmission system.
Ghosh, Arindam   +2 more
core   +2 more sources

Nanozymes for Energy and Environmental Sustainability

open access: yesAdvanced Science, EarlyView.
At present, the widely used nanozymes are oxidoreductase and hydrolase, which have proved to have great application prospects in energy and environment. ABSTRACT Nanozymes have shown remarkable promise in addressing pressing challenges in energy and environmental sustainability.
Xiaoqi Li, Jinxing Chen, Shaojun Dong
wiley   +1 more source

A review of FACTS device implementation in power systems using optimization techniques

open access: yesJournal of Engineering and Applied Science
In electrical power systems, FACTS devices effectively control power flow and change bus voltages, leading to lower system losses and excellent system stability.
Muddu Chethan, Ravi Kuppan
doaj   +1 more source

Optimal allocation of multi-type FACTS devices in power systems based on power flow entropy

open access: yesJournal of Modern Power Systems and Clean Energy, 2014
Flexible AC transmission systems (FACTS) devices can effectively optimize the distribution of power flow. Power flow entropy can be applied as a measure of load distribution.
Canbing Li   +6 more
doaj   +1 more source

Cellular Identity Crisis: RD3 Loss Fuels Plasticity and Immune Silence in Progressive Neuroblastoma

open access: yesAdvanced Science, EarlyView.
Researchers discovered that therapy‐induced loss of RD3 protein in neuroblastoma triggers a dangerous shift: cancer cells become more stem‐like, invasive, and resistant to treatment while evading immune detection. RD3 loss suppresses antigen presentation and boosts immune checkpoints, creating an immune‐silent environment.
Poorvi Subramanian   +7 more
wiley   +1 more source

Population based evolutionary optimization techniques for optimal allocation and sizing of Thyristor Controlled Series Capacitor

open access: yesJournal of Electrical Systems and Information Technology, 2018
During the last decade, the application of Flexible AC Transmission System (FACTS) devices in electrical power system increased due to their numerous advantages such as power transfer capability enhancement, reliability and security improvement and ...
Rahul Agrawal   +2 more
doaj   +1 more source

Radiation pattern reconfigurable fm antenna [PDF]

open access: yes, 2019
In this work, a radiation pattern reconfigurable antenna design using compact printed spiral monopoles that operates at 102 MHz is reported. The proposed antenna changes its radiation behaviour that responds towards a desired direction with the use of ...
Balanis C.A.   +16 more
core   +1 more source

Home - About - Disclaimer - Privacy