Lei Xu

ORCID: 0000-0002-5072-5080
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About
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Research Areas
  • Face and Expression Recognition
  • Luminescence and Fluorescent Materials
  • Image Enhancement Techniques
  • Integrated Energy Systems Optimization
  • Molecular Sensors and Ion Detection
  • Advanced Vision and Imaging
  • Advanced Image and Video Retrieval Techniques
  • Biosensors and Analytical Detection
  • Plant Pathogens and Fungal Diseases
  • Advanced Algorithms and Applications
  • Folate and B Vitamins Research
  • Smart Grid Energy Management
  • Spectroscopy Techniques in Biomedical and Chemical Research
  • Liver Disease Diagnosis and Treatment
  • Sparse and Compressive Sensing Techniques
  • Remote Sensing in Agriculture
  • Gaze Tracking and Assistive Technology
  • Advanced Image Processing Techniques
  • Dementia and Cognitive Impairment Research
  • Supramolecular Chemistry and Complexes
  • Plant Water Relations and Carbon Dynamics
  • Blind Source Separation Techniques
  • Oil and Gas Production Techniques
  • Microgrid Control and Optimization
  • Drilling and Well Engineering

University of Science and Technology of China
2024-2025

Xihua University
2025

Guizhou University
2023-2025

Nanjing University of Posts and Telecommunications
2004-2024

Northwestern Polytechnical University
2009-2024

Gansu Agricultural University
2024

Shandong First Medical University
2024

Shandong Tumor Hospital
2024

Sun Yat-sen Memorial Hospital
2023

Sun Yat-sen University
2022-2023

The design of tunable luminescent biomaterials with large Stokes shifts is usually pursued by a twisted intramolecular charge transfer (TICT) effect switchable emission colors in response to various external stimuli. However, such strategy realized conjugated molecules containing benzene or its derivatives and consequently suffers from poor biocompatibility. In this work, hyperbranched polysiloxane (HBPSi)-based non-conjugated fluorescent polymer TICT aggregation-induced (AIE) features...

10.1021/acs.biomac.3c00080 article EN Biomacromolecules 2023-03-29

Abstract Nonconventional luminescent materials have been rising stars in organic luminophores due to their intrinsic characteristics, including water‐solubility, biocompatibility, and environmental friendliness shown potential applications diverse fields. As an indispensable branch of nonconventional materials, polysiloxanes, which consist electron‐rich auxochromic groups, exhibited outstanding photophysical properties the unique silicon atoms. The flexible Si‐O bonds benefit aggregation,...

10.1002/agt2.471 article EN cc-by Aggregate 2023-12-08

Rapid identification of fermented lactic acid bacteria has long been a challenge in the brewing industry. This study combined label-free surface-enhanced Raman scattering (SERS) and optical tweezer technology to construct test platform within microfluidic environment. Six kinds common industry were tested prove stability SERS spectra. The results demonstrated that utilization tweezers securely hold significantly enhanced Furthermore, SVM XGBoost machine learning algorithms utilized analyze...

10.1021/acs.analchem.3c03852 article EN Analytical Chemistry 2023-12-19

Autonomous driving technology has led to an increasing preference for rearward seating postures. However, current restraint systems exhibit significant shortcomings in protecting reclined occupants. In this paper, based on the existing system components, various strategies were configured enhance protection Firstly, research developed a model of driver-side and validated its accuracy; secondly, it analyzed kinematic response damage occupants with conventional system; then, characteristics...

10.1038/s41598-025-86681-w article EN cc-by-nc-nd Scientific Reports 2025-01-24

In the dual-channel retail industry, excessive enthusiasm in offline retailers’ services often extends beyond customer’s “interpersonal distance zone”, leading to psychological discomfort for customers and a subsequent loss of demand. This situation can trap retailers dilemma known as “service trap”. To address this issue, we introduce concept zone service tolerance, which encompasses desired adequate levels service, into supply chain consisting an online channel manufacturer retailer. We...

10.3390/systems13020093 article EN cc-by Systems 2025-01-31

Previous epidemiological studies have focused on the association of dietary vitamin B6 or circulating pyridoxal-5′-phosphate (PLP) with colorectal cancer risk. This study aimed to investigate in relation risk combining biomarkers PLP, pyridoxal (PL) plus and PAr (the ratio 4-pyridoxic acid over sum PLP PL). A large-scale hospital-based case-control was conducted Guangdong Province, China, which included 1233 cases 1245 sex age frequency-matched controls. Serum PL, (PA) were detected...

10.3390/nu14122389 article EN Nutrients 2022-06-09

Developing nonconjugated materials with large Stokes shifts is highly desired. In this work, three kinds of hyperbranched aggregation-induced emission (AIE) polymers tunable n/π electronic effects were synthesized. HBPSi-CBD contains alkenyl groups in the backbone and possesses a promoted n−π* transition red-shifted wavelength shift 186 nm. Experiments theoretical simulations confirmed that planar π electrons are responsible for due to strong through-space n···π interactions restricted...

10.1021/acs.biomac.4c00193 article EN Biomacromolecules 2024-03-13

Beer spoilage bacteria have been a headache for major breweries. In order to rapidly identify and improve the sensitivity signal-to-noise ratio of bacterial SERS detection, label-free technique was used as starting point, we found eight species that led beer spoilage. The impact AgNP concentration binding time on final results were thoroughly investigated. To maximize increase in signal, an aluminized chip created. We merged t-SNE reduced dimensional analysis algorithm, SVM, KNN, LDA machine...

10.1039/d2ay01221a article EN Analytical Methods 2022-01-01

Abstract Motivation: Plant phenomics, the collection of large-scale plant phenotype data, is growing exponentially. The resources have become essential component modern science. Such complex datasets are critical for understanding mechanisms governing energy intake and storage in plants, this improving crop productivity. However, a major issue facing these efforts determination quality phenotypic data. Automated methods needed to identify characterize alterations caused by system errors, all...

10.1093/bioinformatics/btu854 article EN Bioinformatics 2015-01-22

Sparse learning based feature selection has been widely investigated in recent years. In this study, we focus on the l2,0-norm selection, which is effective for exact top-k but challenging to optimize. To solve general constrained problems, novelly develop a parameter-free optimization framework coordinate descend (CD) method, termed CD-LSR. Specifically, devise skillful conversion from original problem solving one continuous matrix and discrete matrix. Then nontrivial constraint can be...

10.1609/aaai.v37i9.26258 article EN Proceedings of the AAAI Conference on Artificial Intelligence 2023-06-26

Members of the genera Gymnopus and Mycena are vital for litter decomposition in tropical humid temperate forests. In this study, difference morphological features among gansuensis , subsepiiconicus glabera was confirmed by DNA data. showed separate relationships with other species ITS nLSU combined dataset utilized phylogeny sect. Impudicae . addition, is characterized pileus honey yellow at center, margin pinkish buff to buff, stipe fuscous, basidiospores elliptic briolette. clay grayish...

10.3389/fmicb.2024.1487598 article EN cc-by Frontiers in Microbiology 2024-11-29

Abstract Motivation Phenomics is essential for understanding the mechanisms that regulate or influence growth, fitness, and development. Techniques have been developed to conduct high-throughput large-scale phenotyping on animals, plants humans, aiming bridge gap between genomics, gene functions traits. Although new developments in techniques are exciting, we limited by tools analyze fully massive phenotype data, especially dynamic relationships phenotypes environments. Results We present a...

10.1093/bioinformatics/btw673 article EN Bioinformatics 2016-10-21

Concerning the physically handicapped people, using head movement to control motion of mobile service robot has become a new choice, and it favored by many consumers researchers high market value research value. In view shortcomings traditional pose estimation algorithm in practical applications, this paper proposes an improved method based on combination random forest iterative closest point (ICP) for robotic wheelchair interactive control. And corresponding experiments are conducted...

10.1109/robio.2017.8324644 article EN 2021 IEEE International Conference on Robotics and Biomimetics (ROBIO) 2017-12-01

Vitamin B2 is essential for DNA methylation, stability and repair, which may influence the development pathogenesis of several cancers. However, data regarding associations circulating vitamin with colorectal cancer risk are limited. The purpose this study was to investigate between serum risk, particularly among participants different levels B6 or folate. A hospital-based case-control study, including 1009 cases 1182 controls matched by age sex, conducted in Guangdong Province, China....

10.1039/d2fo02580a article EN Food & Function 2022-01-01

The purpose of this study was to interpret real-world clinical data analyze the surgical safety and survival outcomes patients with initial unresectable hepatocellular carcinoma (uHCC) after conversion therapy.

10.1186/s12876-024-03457-8 article EN cc-by-nc-nd BMC Gastroenterology 2024-10-17
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