Results 1 to 10 of about 434,174 (297)

Fast Antenna Array Calibration Using One External Receiver [PDF]

Sensors, 2023
In multiple array communication or radar systems, waveform diversity can be utilized for beampattern design. However, one of the critical issues for such systems is the presence of mutual coupling, which degrades the beampattern design’s quality.
Basem Bazuhair, Omar Aldayel
doaj   +4 more sources

Thermal Analysis of a Solar External Receiver Tube with a Novel Component of Guide Vanes

Energies, 2021
The heat transfer performance of a solar external receiver tube with guide vanes was numerically studied under non-uniform heat flux conditions. Models of the smooth tube and the tube with guide vanes were built.
Zecan Tu, Daniela Piccioni Koch, Nenad Sarunac, Martin Frank, Junkui Mao   +4 more
doaj   +3 more sources

Diagnostic accuracy of CT-based radiomics for predicting occult lymph node metastasis in early-stage lung adenocarcinoma: a systematic review and meta-analysis [PDF]

Frontiers in Medicine
BackgroundThis study aims to evaluate the diagnostic accuracy of CT-based radiomics for predicting occult lymph node metastasis (OLNM) in early-stage lung adenocarcinoma.MethodsRelevant studies up to December 2025 were systematically searched in the ...
Jiarong Huang, Ya Su, Lu Chen, Yuqin Long   +3 more
doaj   +2 more sources

Experiment and Numerical Analysis of Thermal Performance of a Billboard External Receiver

Energies, 2022
The receiver serves as a critical component in tower-type concentrated solar power plants. Responsible for light-heat conversion, the efficiency of the receiver significantly affects the overall performance of the power plant.
Jiabin Fang, Mumtaz A. Qaisrani, Nan Tu, Jinjia Wei, Zhenjie Wan, Yabin Jin, Muhammad Khalid, Naveed Ahmed   +7 more
doaj   +1 more source

Study on Outlet Temperature Control of External Receiver for Solar Power Tower

Energies, 2021
Due to the change of direct normal irradiance (DNI) and the change of output power load, the receiver of the solar tower is in an unstable state in the actual operation. In this paper, a 100 MW external cylindric receiver is designed and modelled.
Qiang Zhang, Kaijun Jiang, Yanqiang Kong, Jiangbo Wu, Xiaoze Du   +4 more
doaj   +1 more source

Flow patterns of external solar receivers [PDF]

Solar Energy, 2015
A The design of the flow paths in solar external-receivers with molten salt as heat transfer fluid is critical to increase the Solar Power Tower (SPT) availability and for a reliable receiver operation. The parameters that affect mostly the start-up and shut-down of the receiver are the Direct Normal Irradiance (DNI) and the sun elevation angle ...
Rodríguez Sánchez, María de los Reyes, Sánchez González, Alberto, Marugán Cruz, Carolina, Santana Santana, Domingo José   +3 more
openaire   +2 more sources

Variable velocity in solar external receivers [PDF]

AIP Conference Proceedings, 2017
One of the major problems in solar external receivers is tube overheating, which accelerates the risk of receiver failure. It can be solved implementing receivers with high number of panels. However, it exponentially increases the pressure drop in the receiver and the parasitic power consumption of the Solar Power Tower (SPT), reducing the global ...
M. R. Rodríguez-Sánchez, A. Sánchez-González, A. Acosta-Iborra, D. Santana   +3 more
openaire   +1 more source

Convolution Neural Network Algorithm for Shockable Arrhythmia Classification Within a Digitally Connected Automated External Defibrillator

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2023
Background Diagnosis of shockable rhythms leading to defibrillation remains integral to improving out‐of‐hospital cardiac arrest outcomes. New machine learning techniques have emerged to diagnose arrhythmias on ECGs. In out‐of‐hospital cardiac arrest, an
Christine P. Shen, Benjamin C. Freed, David P. Walter, James C. Perry, Amr F. Barakat, Ahmad Ramy A. Elashery, Kevin S. Shah, Shelby Kutty, Michael McGillion, Fu Siong Ng, Rola Khedraki, Keshav R. Nayak, John D. Rogers, Sanjeev P. Bhavnani   +13 more
doaj   +1 more source

Using corrugated tubes in external molten salt receivers [PDF]

AIP Conference Proceedings, 2019
CFD models have been used to show the potential of using corrugated tubes instead of smooth tubes at a solar thermal receiver using molten salt as heat transfer fluid. The results were compared on the basis of a 700 MWth receiver. Absorber tubes with an inner diameter between 32.8mm and 70 mm using a helical ribbed structure have been analyzed.
Uhlig, Ralf, Frantz, Cathy, Buck, Reiner
openaire   +2 more sources

Positioning Accuracy Comparison of GNSS Receivers Used for Mapping and Guidance of Agricultural Machines

Agronomy, 2020
Global Navigation Satellite Systems (GNSS) allow the determination of the 3D position of a point on the Earth’s surface by measuring the distance from the receiver antenna to the orbital position of at least four satellites.
Pietro Catania, Antonio Comparetti, Pierluigi Febo, Giuseppe Morello, Santo Orlando, Eliseo Roma, Mariangela Vallone   +6 more
doaj   +1 more source