Jiahao Dong

• Tsinghua University

Due to the structural diversity and rapid iteration of synthetic cannabinoids (SCs), their detection presents a challenging issue. Here, based on the structure and physicochemical property analysis of a typical SC, MDMB-CHMICA, four fluorescent probes were designed by introducing the recognition groups and fluorescence regulation groups on carbazol...

Constructed wetlands (CWs), serving as an advanced wastewater treatment system, play a vital role in both the emission and sequestration of diverse GHGs. However, there are few papers reviewing and analyzing developments in the field. In this study, bibliometrics were used as an essential tool for identifying and establishing connections among key...

A Yb:YAG single-crystal rod (SCR) with great optical properties was successfully grown based on the laser-heated pedestal growth (LHPG) method, and its laser characteristics were comprehensively studied. Pumped by a 940 nm laser diode, the output power of the continuous-wave (CW) laser was 3.72 W, corresponding to a slope efficiency of 44.3%. The c...

In the manufacturing industry, defect detection is an essential but challenging task aiming to detect defects generated in the process of production. Though traditional YOLO models presents a good performance in defect detection, they still have limitations in capturing high-order feature interrelationships, which hurdles defect detection in the co...

Industrial anomaly classification (AC) is an indispensable task in industrial manufacturing, which guarantees quality and safety of various product. To address the scarcity of data in industrial scenarios, lots of few-shot anomaly detection methods emerge recently. In this paper, we propose an effective few-shot anomaly classification (FSAC) framew...

Background Ethanol elicits a rapid stimulatory effect and a subsequent, prolonged sedative response, which are potential predictors of EtOH consumption by decreasing adenosine signaling; this phenomenon also reflects the obvious sex difference. cAMP-PKA signaling pathway modulation can influence the stimulatory and sedative effects induced by EtOH...

Few-shot anomaly classification (FSAC) is a vital task in manufacturing industry. Recent methods focus on utilizing CLIP in zero/few normal shot anomaly detection instead of custom models. However, there is a lack of specific text prompts in anomaly classification and most of them ignore the modality gap between image and text. Meanwhile, there is...

The realization of spatiotemporal vortex structure of various physical fields with transverse orbital angular momentum (OAM) has attracted much attention and is expected to expand the research scope and open new opportunities in their respective fields. Here we present theoretically the first, to the best of our knowledge, study on the generation o...

Background Phosphodiesterase 7 (PDE7) plays a role in neurological function. Increased expression and activity of PDE7 has been detected in several central nervous system diseases. However, the role of PDE7 in regulating stress levels remains unclear. Thus, this study aimed to determine whether and how PDE7 involved in the stress-induced behavioral...

Few-shot anomaly detection methods can effectively address data collecting difficulty in industrial scenarios. Compared to 2D few-shot anomaly detection (2D-FSAD), 3D few-shot anomaly detection (3D-FSAD) is still an unexplored but essential task. In this paper, we propose CLIP3D-AD, an efficient 3D-FSAD method extended on CLIP. We successfully tran...

Previously, we demonstrated hysteretic and persistent changes of resistivity in two-terminal electronic devices based on charge trapping and detrapping at immobile metastable defects [Yin et al., Phys. Rev. Appl. 15, 014014 (2021)]; we termed these defect-level switching (DLS) devices. DLS devices feature all-electronic resistive switching and thus...

The h-type pile (hTP pile) is a complex anti-slip pile system, which connects the front pile and the back pile through beams. When it is used in engineering, there is a complex soil arch effect between the soil and the hTP piles, which makes the complex anti-slip mechanism. In this paper, the discrete element method is used to establish the hTP pil...

Nitrogen pollution in water environments has reached critical levels globally, primarily stemming from agricultural runoff, industrial discharges, and untreated sewage. The excessive presence of nitrogen compounds poses a significant threat to water quality, leading to adverse impacts on ecosystems and human health. Reaching a breakthrough in the t...

We reported an intra-cavity pumped Q-switched laser with dual-wavelength synchronous output at 2066.7 nm and 1940nm. Ho:YLF crystal was pumped by a self-Q-switched Tm:YAP laser, which was served as both a gain medium and a saturable absorber simultaneously. For Ho:YLF laser, under 11.4-W incident pump power, a stable pulse laser was achieved at 206...

The finite-time dynamic positioning controller design problem of the unmanned marine vehicle (UMV) system under switching DoS attacks is investigated. Firstly, an adaptive memory-based event-triggering communication mechanism (METCM) is designed to save networked resources in maritime environment. Second, the signals released by the communication m...

Document representation is the basis of language modeling. Its goal is to turn natural language text that flows into a structured form that can be stored and processed by a computer. The bag-of-words model is used by most of the text-representation methods that are currently available. And yet, they do not consider how phrases are used in the text,...

Metal–organic frameworks (MOFs) are promising platforms for designing photoresponsive materials due to their structural versatility and tunable properties. However, challenges remain in fine-tuning the photoresponsive behavior while maintaining the high...

The practical application of lithium‐rich layered oxides is prohibited by the drawbacks such as severe capacity and voltage degradation resulting from unstable oxygen redox environment and the accompanied irreversible oxygen release. Herein, a facile and effective strategy is proposed to regulate the oxygen redox chemistry via foreign Fe doping and...

Tumor necrosis factor (TNF)-α-induced protein 8-like 2 (TIPE2) is a crucial negative regulator of both adaptive and innate immunity, which helps maintain the dynamic balance of the immune system by negatively regulating the signaling of T-cell receptors (TCR) and Toll-like receptors (TLR). In this study, we aimed to investigate the role and molecul...

The treatment of heavy metal ion contamination in aquatic ecosystems has been a growing global concern for centuries. Iron oxide nanomaterials are effective in heavy metals removal, but are frequently challenging due to the precipitation of Fe(III) and poor reusability. To improve the removal of heavy metals by iron hydroxyl oxide (FeOOH), the iron...

Polyfluoroalkyl substance (PFAS) pose a threat to the aquatic environment due to their environmental persistence. The removal of PFAS using constructed wetlands (CWs) has received interest, but the adsorption saturation and limited removal capacity of the substrate is frequently challenging. To enhance the microbial degradation and performance of t...

The h-type pile (hTP pile) is a complex anti-slip pile system, which connects the front pile and the back pile through beams. When it is used in engineering, there is a complex soil arch effect between the soil and the hTP pile, which makes the complex anti-slip mechanism. In this paper, the discrete element method (PFC) is used to establish the hT...

Zinc-ion batteries (ZIBs) have attracted widespread research attention because of their safety, cost-effectiveness, and high theoretical capacity; however, challenges related to Zn anodes, such as corrosion in aqueous electrolytes and...

Fusion genes are products of chromosomal translocations that generate either a dysregulated partner gene or a chimeric fusion protein with new properties, and contribute significantly to leukemia development and clinical risk stratification. However, simultaneous detection of several hundreds of fusion genes has always been a challenge in a clinica...

Currently, Cr(VI) pollution of water poses a major threat worldwide. In this study, α-MnO2 and β-MnO2 with different lattices were prepared to remove Cr(VI) from an aqueous solution. α-MnO2 could remove up to 92% of Cr(VI), which was higher than that of β-MnO2. According to the Brunauer, Emmett and Teller and X-ray photoelectron spectrometry result...

We show that the wide-band gap compound semiconductors ZnO, ZnS, and CdS feature large photoplastic and photoelastic effects that are mediated by point defects. We measure the mechanical properties of ceramics and single crystals using nanoindentation, and we find that elasticity and plasticity vary strongly with moderate illumination. For instance...

Multipoint Optimal Minimum Entropy Deconvolution Adjusted (MOMEDA) is an advanced deconvolution method, which can effectively inhibit the interference of background noise and distinguish the fault period by calculating the multipoint kurtosis values. However, multipoint kurtosis (MKurt) could lead to misjudgment since it is sensitive to spurious no...

Changes in reservoir water levels significantly influence the slope stability. Determining how to deal with changes in the water level is crucial in slope stability analysis. In this study, the formula for the phreatic line in the slope is derived, and a simplified treatment method for reservoir water level decline is proposed. For this, the slope...

Deep learning based on vibration signal image representation has proven to be effective for the intelligent fault diagnosis of bearings. However, previous studies have focused primarily on dealing with single-channel vibration signal processing, which cannot guarantee the integrity of fault feature information. To obtain more abundant fault feature...

Many semiconductors feature defects with charge state transition levels that can switch due to structure changes following defect ionization: we call this defect-level switching (DLS). For example, DX centers in III-V compounds, and oxygen vacancies in ZnO, can switch between deep and shallow donor configurations, and these bistable dynamics are re...

This paper is concerned with the output tracking control for a class of network-based nonlinear unmanned marine vehicle (UMV) systems subject to denial-of-service (DoS) attacks, where a Takagi–Sugeno (T–S) fuzzy approach is proposed to grapple with the nonlinearity of UMV. A semi-Markov chain is introduced to reveal the switches of different attack...

We reported an in-band pumped Q-switched laser with dual-wavelength synchronous output at 2067.1 nm and 1885.7 nm. Ho:YLF crystal, which was pumped by Tm:YLF laser, was served as both a gain medium and a saturable absorber simultaneously. For Ho:YLF laser, under 16.02 W incident pump power, a stable pulse laser was achieved at 2067.1 nm with the hi...

The increased pollution of Cr(VI) poses a major threat to public health and the ecological environment. Iron-carbon (Fe-C) micro-electrolysis was a potential sustainable strategy for improving Cr(VI) reduction in constructed wetlands (CWs). This study explored the performance and mechanisms of Cr(VI) removal in Fe-C based CWs that established with...

Heavy metal pollution has a serious negative impact on the ecological environment and human health due to its toxicity, persistence, and non-biodegradable properties. Among the technologies applied in heavy metals removal, adsorption has been widely used as the most promising method because of its simple operation, high removal efficiency, strong a...

Dynamic charge transfers, or charge fluxes, generated by anharmonic phonon couplings have previously shown some fundamental connections with the pseudogap phase and other important phases in cuprate superconductors. The anharmonicity here suggests the importance of nonadiabatic behaviors of charge fluxes in cuprates. These charge fluxes will result...

In view of the volatile quality of 2,4,6-triazido-1,3,5-triazine (TAT) after melting, a special high-pressure hermetic crucible was used to analyze the compound's thermal decomposition behaviors. The complete exothermic decomposition process of TAT was obtained, and the extrapolated onset temperature, peak temperature, and decomposition enthalpy at...

The essence of logical stochastic resonance is the dynamic manipulation of potential wells. The effect of time delay on the depth of potential wells and the width of a bistable region can be inferred by logic operations in the bistable system with time delay. In a time-delayed synthetic gene network, time delay in the synthesis process can increase...

A new energetic compound bis(3,4-diaminofurazan)methane (BDAFM) was synthesized and structurally characterized by X-ray diffraction. Theoretical calculation on BDAFM was carried out by B3LYP with 6-311+G(d) basis set. The crystal of BDAFM belongs to orthorhombic system with space group Pnn2. The BDAFM molecule is composed of two diaminofurazan grou...

Optical cavity enhanced spectroscopy (CES) is a well-established analytical research area, providing powerful and ultra-sensitive tools for the detection and quantification of trace gas concentrations by using optical cavities to effectively enhance the optical absorption. In this thesis, we will explore a family of new CES techniques named 'the ca...

Euodia rutaecarpa is a common traditional Chinese medicine (TCM) in clinical practice, having the ability to suppress pain and cease coughing; however, with the increasing reports showing that it is toxic, particularly hepatotoxic, the concerns raised by what cause its toxicity is growing. In the current study, an analysis method based on the spect...

We measured 12CO2 and 13CO2 samples with cavity enhanced amplitude modulated laser absorption spectroscopy (CEAMLAS), demonstrating that this spectrometer can be used as a fielddeployable, real-time trace gas analyzer and an isotope analyzer.

In the cerebrovascular digital subtraction angiography (DSA), patient motion is the primary cause of image quality degradation. In this article, we describe a nonrigid image registration system for motion artifact reduction in DSA which is fully automatic, effective, and computationally very efficient. In this system, the mask image is partitioned...