Publications by authors named "Haiqiang Liu"

Compressed sensing (CS) is an innovative signal acquisition and reconstruction technology that has broken through the limit of the Nyquist sampling theory. It is widely employed to optimize the measurement processes in various applications. One of the core challenges of CS is the construction of a measurement matrix.

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Diabetes mellitus complicated with depression (DD) is a prevalent psychosomatic disorder. It is characterized by severe cognitive impairment, and associated with high rates of disability and mortality. Although conventional treatment options are available, the efficacy of these regimens in managing DD remains limited.

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Plant samples with irregular morphology are challenging for longitudinal tissue sectioning. This has restricted the ability to gain insight into some plants using matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI). Herein, we develop a novel technique termed electromagnetic field-assisted frozen tissue planarization (EMFAFTP).

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Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI), which is a label-free imaging technique, determines the spatial distribution and relative abundance of versatile endogenous metabolites in tissues. Meanwhile, matrix selection is generally regarded as a pivotal step in MALDI tissue imaging. This study presents the first report of a novel MALDI matrix, 2-hydroxy-5-nitro-3-(trifluoromethyl)pyridine (HNTP), for the detection and imaging of endogenous metabolites in rat liver and brain tissues by MALDI-MS in positive-ion mode.

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Flowering is an essential process in fruit trees. Flower number and timing have a substantial impact on the yield and maturity of fruit. Ethylene and gibberellin (GA) play vital roles in flowering, but the mechanism of coordinated regulation of flowering in woody plants by GA and ethylene is still unclear.

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  • * A new MALDI matrix, 2,5-dihydroxyterephthalic acid (DHT), has been developed to enhance the detection and imaging of amino acids in biological samples, showing superior performance compared to standard matrices like DHB and CHCA.
  • * Using DHT, researchers successfully detected all 20 protein amino acids in human serum and in oyster tissue for the first time, demonstrating its effectiveness in improving amino acid analysis with MALDI mass spectrometry.
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Understanding the behavior and potential toxicity of copper nanoparticles (nano-Cu) in the aquatic environment is a primary way to assess their environmental risks. In this study, RNA-seq was performed on three different tissues (gills, intestines, and muscles) of zebrafish exposed to nano-Cu, to explore the potential toxic mechanism of nano-Cu on zebrafish. The results indicated that the toxic mechanism of nano-Cu on zebrafish was tissue-specific.

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The thermoelectric performance of n-type BiTe needs further enhancement to match that of its p-type BiTe counterpart and should be considered for competitive applications. Combining Cu/Cl and multiscale additives (AgBiSe) presents a suitable route for such enhancement. This is evidence of the enhanced thermoelectric performance of BiCuTeSeCl.

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The Bi Sb Te (BST) thin film shows great promise in harvesting low-grade heat energy due to its excellent thermoelectric performance at room temperature. In order to further enhance its thermoelectric performance, specifically the power factor and output power, new approaches are highly desirable beyond the common "composition-structure-performance" paradigm. This study introduces ferroelectric polarization engineering as a novel strategy to achieve these goals.

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The transition from deep dormancy to seed germination is essential for the life cycle of plants, but how this process occurs in the gymnosperm Chinese yew (Taxus chinensis var mairei), the natural source of the anticancer drug paclitaxel, remains unclear. Herein, we analyse the transcriptome, proteome, spatial metabolome, and spatial lipidome of the Chinese yew and present the multi-omics profiles of dormant and germinating seeds. Our results show that abscisic acid and gibberellic acid 12 homoeostasis is closely associated with gene transcription and protein translation, and the balance between these phytohormones thereby determines if seeds remain dormant or germinate.

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A novel metabolomics analysis technique, termed matrix-assisted laser desorption/ionization mass spectrometry imaging-based plant tissue microarray (MALDI-MSI-PTMA), was successfully developed for high-throughput metabolite detection and imaging from plant tissues. This technique completely overcomes the disadvantage that metabolites cannot be accessible on an intact plant tissue due to the limitations of the special structures of plant cells (e.g.

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  • Herbicide-resistant soybeans, specifically the transgenic S4003.14 variety, have shown significant differences in lipid composition compared to the non-transgenic JACK variety, indicating unintended effects from gene introduction.
  • Researchers utilized matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) to analyze and visualize the lipid distributions in both soybean types, revealing 18 lipids with notable expression differences.
  • Key findings included specific lipid types that were upregulated or downregulated in the transgenic seeds, enhancing our understanding of the biochemical impacts of genetic modifications in agriculture.
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The objective was to provide a basis for the rational clinical application of moxifloxacin through its comprehensive clinical evaluation, and to serve as a reference for the clinical comprehensive evaluation of relevant drugs in the future. We obtained data from 91 community-acquired pneumonia patients admitted to Weifang people's hospital from April 2020 to November 2021, including 46 in the evaluation group and 45 in the control group. Based on the requirements of the "Guidelines for the Management of Comprehensive Clinical Evaluation of Drugs" (for trial implementation), systematic evaluations are conducted in terms of drug safety, effectiveness, economy, innovation, suitability, and accessibility.

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Anxiety on college campuses has increased due to the COVID-19 epidemic's profound effects on society. Much research has been conducted on how the built environment influences mental health; however, little has been undertaken on how it affects student mental health in the context of the epidemic from the architectural scale perspective of academic buildings. Based on online survey data, this study develops multiple linear regression and binary logistic regression models to investigate students' satisfaction ratings of the academic buildings' physical environments during the epidemic and how these satisfaction ratings affect students' anxiety tendencies.

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Cystatin C, the full name of cystatin C, is one of the most potent cathepsin inhibitors currently known, which can strongly inhibit cathepsin in lysosomes and regulate the level of intracellular proteolysis. Cystatin C plays a very broad role in the body. High temperature-induced brain injury leads to very serious damage to brain tissue, such as cell inactivation, brain tissue edema, etc.

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  • The study explored the use of polyacrylamide gel (PAAG) as a new embedding medium for improving the maintenance of biological tissues during the sectioning process for mass spectrometry imaging.
  • PAAG was compared to other common embedding materials (agarose, gelatin, OCT, and ice) in terms of tissue morphology maintenance and efficiency in ionizing metabolites.
  • The results indicated that PAAG outperformed these traditional media, offering advantages such as a one-step operation, better morphology preservation, reduced interference, and enhanced metabolite ion signals, suggesting its potential as the new standard for metabolite imaging.
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Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) is a powerful approach that has been widely used for detection of various endogenous compounds in tissues. However, there are still challenges with analysis of proteins using MALDI-MSI due to the ion suppression effects of small molecules in tissue sections. Therefore, tissue-washing steps are crucial for protein MALDI tissue imaging to remove these interfering molecules.

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  • A full PDMS micro-droplet chip for 3D cell culture was created using SLA 3D printing, allowing for quick customization and cost savings in experiments.
  • The chip's design benefits from varying PDMS substrate ratios to enhance bonding strength and includes a method for precise micro-droplet control during experiments.
  • Experimental results demonstrated that chondrocytes thrive in the resulting microspheres, showcasing the chip's capability to maintain a controlled microenvironment for cell growth.
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  • PM pollution in China has resulted in significant health issues and economic losses, necessitating an accurate assessment of these impacts across various regions.
  • The study assessed health effects from PM exposure in 338 cities using monitoring data and predictive models, finding no significant discrepancies between the two sources.
  • Estimated deaths from PM-related diseases were significant, totaling about 1.12 million, with the economic cost reaching approximately $80.25 billion in 2016, highlighting priority cities for air pollution control like Beijing and Chongqing.
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Michler's ethylketone (MEK, 4,4'-bis(diethylamino)benzophenone), commonly-known as an intermediate in the synthesis of dyes and pigments, was successfully screened and optimized as a novel matrix for the enhancement of lipid detection and imaging in tissues by MALDI-MSI. The results show several properties of MEK as a powerful MALDI matrix, including strong UV absorption, µm-sized crystals and uniform matrix-coating, super high vacuum chemical stability, low matrix-related ion interference, super soft ionization, and high lipid ionization efficiency.

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  • The article discusses two new rock detection methods designed for Mars rovers, which are crucial for safe navigation and obstacle avoidance.
  • The methods address challenges posed by the diversity of Martian rock shapes and limited pixel details that affect current detection techniques.
  • The proposed algorithms, KPRD and KLRD, enhance the accuracy and speed of rock detection, with KLRD offering improved results through a more sophisticated approach, validated by experimental results on a specially created dataset called MarsData.
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Herein, copper adhesive tape attached to the reverse side of a glass slide was developed as a new method to achieve protein detection and imaging in a formalin fixed paraffin-embedded (FFPE) tissue section on a non-conductive glass slide by MALDI-MSI. The use of this new method led to 223 protein ions being imaged from a rat brain FFPE-tissue section on a non-conductive glass slide by MALDI-MS, compared to only 145 and 163 protein ions detected on an ITO glass slide and an AnchorChip target plate, respectively. This new method has great potential to become standard practice for protein MALDI-imaging in FFPE-tissue sections on non-conductive glass slides.

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To our knowledge, this was the first study in which caffeic acid (CA) was successfully evaluated as a matrix to enhance the detection and imaging of endogenous proteins in three biological tissue sections (, a rat brain and and germinating soybean seeds) by matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI). Our results show several properties of CA, including strong ultraviolet absorption, a super-wide MS detection mass range close to 200,000 Da, micrometer-sized matrix crystals, uniform matrix deposition, and high ionization efficiency. More high-molecular-weight (HMW) protein ion signals (/ > 30,000) could be clearly detected in biological tissues with the use of CA, compared to two commonly used MALDI matrices, , sinapinic acid (SA) and ferulic acid (FA).

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Introduction: This protocol is for a meta analysis that aims to systematically review the diagnostic value of anti-hepatitis B virus in serum tested by the enzyme linked immunosorbent assay in patients with hepatitis B.

Methods And Analysis: The following electronic databases will be searched from inception to Mar 2021: PubMed, Web of Science, ScienceDirect, EMBASE, MEDLINE, Springer, China National Knowledge Infrastructure, Chinese Biomedical Literature Database, VIP Chinese Science and Technology Periodical Database, and Wanfang Database. All study about enzyme linked immunosorbent assay reagents have been published at home and abroad to diagnose hepatitis B virus will be included.

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Light detection and ranging (LiDAR) is one of the popular technologies to acquire critical information for building information modelling. To allow an automatic acquirement of building information, the first and most important step of LiDAR technology is to accurately determine the important gesture information that micro electromechanical (MEMS) based inertial measurement unit (IMU) sensors can provide from the moving robot. However, during the practical building mapping, serious errors may happen due to the inappropriate installation of a MEMS-IMU.

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