Results 81 to 90 of about 91,557 (268)

Improving the quality of low SNR images using high SNR images

, 2019
It is important to get data with Signal-Noise-Ratios (SNR) as high as possible. Compared to other techniques, filtering methods are fast. But they do not make full use of the characteristics of sample structure which reflected by relevant high SNR images. In this study, we propose a technique termed “TransFiltering”.
openaire   +1 more source

The SNR W28 at TeV energies

AIP Conference Proceedings, 2000
The southern supernova remnant (SNR)W28 was observed in 1994 and 1995 by the CANGAROO 3.8m telescope in a search formulti-TeV gamma ray emission, using the Cerenkov imaging technique. We obtained upper limits for a variety of point-like and extended features within a +-1 degree-region and briefly discuss these results, together with that of EGRET ...
Rowell, G. P., Naito, T., Dazeley, S. A., Edwards, P. G., Gunji, S., Hara, T., Holder, J., Kawachi, A., Kifune, T., Matsubara, Y., Mizumoto, Y., Mori, M., Muraishi, H., Muraki, Y., Nishijima, K., Ogio, S., Patterson, J. R., Roberts, M. D., Sako, T., Sakurazawa, K., Susukita, R., Tamura, T., Tanimori, T., Thornton, G. J., Yanagita, S., Yoshida, T., Yoshikoshi, T.   +26 more
openaire   +2 more sources

Origin of Dark Current Robustness in Photomultiplication Organic Photodetectors Enabled by Ionic Conjugated Electron‐Blocking Layers

Advanced Materials, EarlyView.
Ionic conjugated polyelectrolyte electron‐blocking layers enable photomultiplication organic photodetectors with dark current robustness up to −10 V and external quantum efficiencies exceeding 3000%. Fowler–Nordheim tunneling, interfacial dipole, trap density of states, and noise analyses reveal how ionic conjugated polyelectrolytes suppress electron ...
Yelim Kang, Min Hun Jee, Shuai Zhang, Sang Heon Lee, Jung Min Ha, Xingchao Zhao, Xiaoling Ma, Huiseong Shin, Changhwan Shin, Soonyong Lee, Fujun Zhang, Jae Won Shim, Han Young Woo   +12 more
wiley   +1 more source

Resolving Nanoscale Heterogeneities in Lead Halide Perovskites Through Low‐Dose Concurrent 4D‐STEM‐EDX Mapping

Advanced Materials, EarlyView.
Mixed‐cation lead mixed‐halide perovskites suffer from structural instabilities linked to nanoscale heterogeneity. To probe this non‐destructively, a low‐dose, concurrent 4D‐STEM and EDX methodology has been developed. Examining a (FA0.83Cs0.17)Pb(I0.8Br0.2)3 film revealed a complex mosaic of coexisting crystal structures. Crucially, local deficiencies
Jinseok Ryu, Alexandra A. Sheader, Mohsen Danaie, David G. Hopkinson, Katherine E. MacArthur, Nakita K. Noel, Christopher S. Allen   +6 more
wiley   +1 more source

Design and Analysis of a Hybrid LiFi-Based IoT System with RF Energy Harvesting for Enhanced Power Management

Mehran University Research Journal of Engineering and Technology
This research paper describes the detailed design of a hybrid system comprising of Light Fidelity (LiFi) communication and Radio Frequency energy harvesting (RFEH) to serve the Internet of Things (IoT) devices.
Ammar Afzal, Umer Ijaz, Muhammad Farhan
doaj   +1 more source

Maskless Fabrication of PLA‐Based Neural Arrays for CNS Recording and Stimulation

Advanced Materials Interfaces, EarlyView.
Biodegradable neural interfaces enable bidirectional communication with the CNS. Through electrochemical characterization, ageing tests with impedance monitoring, and in vivo validation, we assess the performance of PLA‐based epicortical and spinal implants.
Anna De Salvo, Federica Velluto, Ilenia Sergi, Michele Di Lauro, Verónica Barranco‐Maresca, Elena Alonso‐Calviño, Yasmina Hernández‐Martín, Juan Aguilar, Juliana M. Rosa, María C. Serrano, Carolina Giulia Ferroni, Federico Rondelli, Elisa López‐Dolado, Luciano Fadiga, Fabio Biscarini   +14 more
wiley   +1 more source

Integrated Study of Device Positioning Accuracy in LTE Networks under Line-of-Sight Conditions

Известия высших учебных заведений России: Радиоэлектроника
Introduction. The rapid development of 5G and Beyond 5G mobile radio technologies does not diminish the importance of research into the accuracy of positioning in widely deployed 4G LTE networks.
H. C. Hua, G. A. Fokin
doaj   +1 more source

Sensitivity Analysis of the Simply Noise-matched Receiving Coil for NMR Experiments

Measurement Science Review, 2020
The article analyzes the sensitivity of unmatched receiving coil for the NMR scanner. Receiver of the scanner was investigated from the point of view of noise features. Theory of the noise figure has been modified to utilize the receiver for digitization
Andris Peter, Frollo Ivan
doaj   +1 more source

Advances in Halide Perovskites for Photon Radiation Detectors

Advanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang, Jieqi Wang, Xiaojun Cui, Carsten Ronning   +3 more
wiley   +1 more source

Convolution of Barker and Golay Codes for Low Voltage Ultrasonic Testing

Technologies, 2019
Ultrasonic Testing (UT) is one of the most important technologies in Non-Detective Testing (NDT) methods. Recently, Barker code and Golay code pairs as coded excitation signals have been applied in ultrasound imaging system with improved quality. However,
Zeng Fan, John Rudlin, Giorgos Asfis, Hongying Meng   +3 more
doaj   +1 more source