Results 1 to 10 of about 3,386 (52)

The solid effect of dynamic nuclear polarization in liquids [PDF]

open access: yesMagnetic Resonance, 2023
The solid-state effect of dynamic nuclear polarization (DNP) is operative also in viscous liquids where the dipolar interaction between the electronic and nuclear spins is partially averaged.
D. Sezer
doaj   +1 more source

Cell-free synthesis of proteins with selectively 13C-labelled methyl groups from inexpensive precursors [PDF]

open access: yesMagnetic Resonance, 2023
The novel eCell system maintains the activity of the entire repertoire of metabolic Escherichia coli enzymes in cell-free protein synthesis. We show that this can be harnessed to produce proteins with selectively 13C-labelled amino acids from ...
D. Van Raad   +3 more
doaj   +1 more source

Optimizing Sensitivity-enhanced Quantitative 13C NMR Experiment by Genetic Algorithm

open access: yesChinese Journal of Magnetic Resonance, 2023
Quantitative NMR experiments are an essential part of NMR analysis, which play a critical role in component analysis and compound structure identification. Carbon atoms form the framework of organic compounds, and 13C NMR has unique advantages in organic
SONG Linhong   +4 more
doaj   +1 more source

Knee Joint Model Construction and Local Specific Absorption Rate Estimation Based on Generative Adversarial Networks

open access: yesChinese Journal of Magnetic Resonance, 2023
The local specific absorption rate (SAR) is an essential metric when assessing the safety of high-field magnetic resonance imaging (MRI). Usually, the subject-specific model is created from segmented magnetic resonance (MR) images, followed by SAR ...
REN Hongjin, MA Yan, XIAO Liang
doaj   +1 more source

Dual Function Radar and Communication Signal Matrix Design Method for MIMO System

open access: yesLeida xuebao, 2023
Due to several advantages of the Multi-Input Multi-Output (MIMO) system in terms of waveform, space diversity, and multiplexing, the MIMO Dual Function Radar and Communication (DFRC) system, which is responsible for target detection and securing the ...
Jing YANG   +4 more
doaj   +1 more source

A Novel Joint Radar-communication Waveform Design Method Based on Distributed Aperture

open access: yesLeida xuebao, 2023
Joint radar-communication waveform design has been the focus of intensive research in recent years. The integrated waveform based on a collocated antenna can simultaneously detect targets and communicate with multiple users in different directions ...
Liu LIU   +4 more
doaj   +1 more source

Current Situation and Development Demands for a Radar Warning Receiver System

open access: yesLeida xuebao, 2023
With the development in information technology and the change of air combat mode, Radar Warning Receiver (RWR) have become indispensable electronic warfare equipment for modern fighters.
Xing WANG   +4 more
doaj   +1 more source

Waveform Selection Method of Cognitive Radar Target Tracking Based on Reinforcement Learning

open access: yesLeida xuebao, 2023
Based on the obtained knowledge through ceaseless interaction with the environment and learning from the experience, cognitive radar continuously adjusts its waveform, parameters, and illumination strategies to achieve robust target tracking in complex ...
Peikun ZHU   +3 more
doaj   +1 more source

Sea-detecting Radar Experiment and Target Feature Data Acquisition for Dual Polarization Multistate Scattering Dataset of Marine Targets

open access: yesLeida xuebao, 2023
Marine target detection and recognition depend on the characteristics of marine targets and sea clutter. Therefore, understanding the essential features of marine targets based on the measured data is crucial for advancing target detection and ...
Jian GUAN   +7 more
doaj   +1 more source

Probability Model-driven Airborne Bayesian Forward-looking Super-resolution Imaging for Multitarget Scenario

open access: yesLeida xuebao, 2023
Forward-looking imaging is crucial in many civil and military fields, such as precision guidance, autonomous landing, and autonomous driving. The forward-looking imaging performance of airborne radar may deteriorate significantly due to the constraint of
Hongmeng CHEN   +6 more
doaj   +1 more source

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