A H2S triggered and H2S releasing near-infrared fluorescent probe (HL-H2S) was developed. HL-H2S does not interfere with the progression of ferroptosis by consuming H2S, thus enabling high-fidelity in situ imaging of ferroptosis.
A novel feature extraction method based on micro-Doppler signature is proposed to categorize ground moving targets into three kinds, i.e., single walking person, two people walking and a moving wheeled vehicle. Signal models and measured data from a low resolution radar are first analyzed to find the differences between the micro-Doppler signatures from the three kinds of considered targets. Then such discriminative micro-Doppler signatures are represented via a 3-dimensional feature vector extracted from the time-frequency spectrograms.In the experiments based on the measured data, the ratio of the between-class distance to the within-class distance, which is defined based on Fisher Discriminant Analysis (FDA), is exploited to assess the discriminative ability of the 3-dimensional feature vector. Moreover, Support Vector Machine (SVM) classifier is utilized to evaluate the classification performance. Experimental results show that the proposed micro-Doppler features can achieve a good discriminative ability and a satisfactory classification performance.
This study reports the development of a new, pH-sensitive, mitochondria-targeting two-photon ratiometric probe (Mito-BNO) for real-time tracking of mitophagy, a process that accelerates in brain tissue during stroke. Mito-BNO demonstrated...
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