Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Environmental loads linked with pointing errors, such as gravity, thermal gradients, and wind disturbances, are a serious concern for large-aperture high-frequency radio telescopes. For the purpose of maintaining the pointing performance of a telescope, a contact measurement scheme is proposed on basis of fiber Bragg grating (FBG) strain sensors that can monitor the sub-reflector shift in real time as the input data of the adjustment system. In this scheme, the relationship between the in situ strain measurement and the deformation of the supporting structure, which is the main cause of sub-reflector shift, is deduced using the inverse Finite Element Method (iFEM). Finally, experimental studies are carried out on a simple physical structure model to validate the effectiveness and accuracy of the contact measurement scheme.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6387059 | PMC |
| http://dx.doi.org/10.3390/s19030619 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Utilized Distributed Optical Fiber Sensor with Spiral-Serpentine Deployment Enabling High-Precision Full-Field Temperature Reconstruction and Thermal Management for Pouch Lithium-Ion Battery.
Adv Sci (Weinh)
September 2025
School of Control Science and Engineering, Shandong University, Jinan, 250061, China.
Real-time and accurate temperature monitoring has been widely recognized in both academia and industry to ensure battery operation safety. Traditional techniques are generally limited to incomplete information caused by discrete sampling points. Hence, the spiral-serpentine distributed optical fiber sensor (DOFS) layout is presented to realize in-situ full-range temperature measurement.
View Article and Find Full Text PDFPARP inhibitors potentiate proton therapy end-of-range effects by accelerating replication forks and promoting transcription conflict.
Int J Radiat Oncol Biol Phys
August 2025
Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA; Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA. Electronic address:
Purpose: Poly ADP ribose polymerase inhibitors (PARPi) are being combined with photon and proton radiotherapy in clinical trials. We sought to investigate mechanisms of PARPi radiosensitization at varying linear energy transfer (LET) levels after observing an extreme normal tissue response in an 18-year-old with high grade glioma without a germline alteration predictive of heightened radiosensitivity treated with veliparib and proton therapy.
Experimental Design: BRCA1/2 wild-type non-cancerous and cancerous cells were treated with PARPi plus photons or protons at the entrance (ENT, dose-averaged LET [LETd] 2.
Experimental Study on Grouting Seepage Characteristics in Rough Single Microfissure Under Triaxial Stress States.
Materials (Basel)
August 2025
Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, China.
The increasing depth of coal mine construction has led to complex geological conditions involving high ground stress and elevated groundwater levels, presenting new challenges for water-sealing technologies in rock microfissure grouting. This study investigates ultrafine cement grouting in microfissures through systematic analysis of slurry properties and grouting simulations. Through systematic analysis of ultrafine cement grout performance across water-cement (W/C) ratios, this study establishes optimal injectable mix proportions.
View Article and Find Full Text PDFStudy on the Adaptability of FBG Sensors Encapsulated in CNT-Modified Gel Material for Asphalt Pavement.
Gels
July 2025
Department of Electrical Engineering, College of Science and Technology, University of Nottingham Ningbo China, Ningbo 315100, China.
To prolong the service life of asphalt pavement and reduce its maintenance cost, a fiber Bragg grating (FBG) sensor encapsulated in carboxylated carbon nanotube (CNT-COOH)-modified gel material suitable for strain monitoring of asphalt pavement was developed. Through tensile and bending tests, the effects of carboxylated carbon nanotubes on the mechanical properties of gel materials under different dosages were evaluated and the optimal dosage of carbon nanotubes was determined. Infrared spectrometer and scanning electron microscopy were used to compare and analyze the infrared spectra and microstructure of carbon nanotubes before and after carboxyl functionalization and modified gel materials.
View Article and Find Full Text PDFWe propose a shape-space coordinate prediction model for multi-core fiber Bragg grating (MCFBG) sensors, which integrates pretraining and transfer learning strategies with deep learning architectures. The model establishes an end-to-end mapping relationship from the center wavelength data of MCFBGs to their corresponding shape-space coordinates, which improves the accuracy of MCFBG-based shape sensing while reducing the amount of training data required in experiments. Results show that the best-performing model achieves a median terminal point error with a relative error as low as 0.
View Article and Find Full Text PDF