Publications by authors named "Lei Niu"

With the increasing incidence of thyroid cancer worldwide and the increasing demand for surgery, the risk of parathyroid injury is also increasing, which will lead to postoperative hypoparathyroidism (HP) and hypocalcemia. In order to improve the quality of life of patients after surgery, there is an urgent need to develop a novel platform that can identify the parathyroid gland immediately during surgery. The parathyroid gland promotes the increase of blood calcium concentration by secreting parathyroid hormone (PTH).

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  • The proposed hybrid photonic platform combines chalcogenide glass (GeSbSe) with lithium niobate on insulator (LNOI) to enhance performance and compactness for integrated photonic systems.
  • Key components such as grating couplers, micro-ring resonators, multimode interference couplers, and Mach-Zehnder interferometers are designed and fabricated, achieving high quality factors and low propagation losses.
  • This platform's unique optical properties allow for scalable, low-loss integrated photonic circuits, making it suitable for applications in high-speed optical communications and signal processing.
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Norms have been effectively utilized to facilitate smooth interactions among agents. Norms are usually the global data that agents cannot directly access in complex environments; instead, norms can only be indirectly accessed by agents via maintaining their own beliefs about norms. Establishing norms using decentralized interaction-based methods has attracted much attention.

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Introduction: This study examined the prevalence and correlates of probable mental health disorders, including psychological distress, somatization, depression, anxiety, phobic anxiety (PHO), obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), and insomnia among Chinese primary health care (PHC) physicians and nurses amid the post-pandemic period in 2022.

Method: Region-stratified sampling was conducted to recruit a national sample of 4,246 respondents from 31 July 2022 to 12 August 2022. A total of 692 primary healthcare institutions were identified in 30 provincial-level administrative regions of China.

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  • The study aimed to evaluate the safety, feasibility, and short-term effectiveness of λ-type esophagojejunostomy during total gastrectomy using total laparoscopy, focusing on its impact on postoperative quality of life.
  • Researchers analyzed data from 50 patients with adenocarcinoma who underwent this procedure, measuring various outcomes such as operation time, recovery times, and complications.
  • Results indicated that the procedure had manageable complications and a stable Nutritional Risk Index over 12 months, suggesting it could be a viable option for patients undergoing total gastrectomy.
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Geohazards that have developed in densely vegetated alpine gorges exhibit characteristics such as remote occurrence, high concealment, and cascading effects. Utilizing a single remote sensing datum for their identification has limitations, while utilizing multiple remote sensing data obtained based on different sensors can allow comprehensive and accurate identification of geohazards in such areas. This study takes the Latudi River valley, a tributary of the Nujiang River in the Hengduan Mountains, as the research area, and comprehensively uses three techniques of remote sensing: unmanned aerial vehicle (UAV) Light Detection and Ranging (LiDAR), Small Baseline Subset interferometric synthetic aperture radar (SBAS-InSAR), and UAV optical remote sensing.

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The formation of symbionts by using different combinations of endophytic bacteria, microalgae, and fungi to purify antibiotics-containing wastewater is an effective and promising biomaterial technology. As it enhances the mixed antibiotics removal performance of the bio-system, this technology is currently extensively studied. Using exogenous supplementation of various low concentrations of the phytohormone strigolactone analogue GR24, the removal of various antibiotics from simulated wastewater was examined.

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Background: Laparoscopic distal gastrectomy (LDG) has become a common procedure for treating advanced gastric cancer (AGC) in China. However, there is uncertainty regarding its oncological outcomes compared to open distal gastrectomy (ODG). This study aims to compare the 3-year disease-free survival (DFS) rates among patients who underwent surgery for AGC in northern China.

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Septic acute kidney injury (AKI) is considered as a severe and frequent complication that occurs during sepsis. Mounting evidence has confirmed the pivotal pathogenetic roles of microRNA (miRNA or miR) in sepsis‑induced AKI; however, the role of miRNAs and their underlying mechanisms in sepsis‑induced AKI have not been entirely understood. The present study aimed to elucidate the functions of special miRNAs during sepsis‑induced AKI and its underlying mechanism.

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Introduction: Intestinal barrier dysfunction is a pivotal factor in sepsis progression. The mechanosensitive ion channel Piezo1 is associated with barrier function; however, its role in sepsis-induced intestinal barrier dysfunction remains poorly understood.

Methods: The application of cecal ligation and puncture (CLP) modeling was performed on both mice of the wild-type (WT) variety and those with Villin-Piezo1 genetic makeup to assess the barrier function using in vivo FITC-dextran permeability measurements and immunofluorescence microscopy analysis of tight junctions (TJs) and apoptosis levels.

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We propose a non-volatile 2 × 2 photonic switch based on multimode interference in an SbSe-loaded waveguide. The different modal symmetries of the TE and TE modes supported in the multimode region change their propagation constants distinctly upon the SbSe phase transition. Through careful optical design and FDTD optimization of the multimode waveguide dimensions, efficient switching is achieved despite the modest index contrast of SbSe relative to GeSbTe.

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  • Intercropping, which is growing two different types of plants together, can help plants get better nutrition and grow more.
  • In this study, scientists looked at how peanut and maize plants help each other get iron from the soil, especially focusing on tiny helpers called microbes living around their roots.
  • They found that intercropping helps peanuts get more iron, and a special microbe called Pseudomonas releases a substance that helps improve iron nutrition in both peanut and maize plants.
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Health monitoring is a critical aspect of personalized healthcare, enabling early detection, and intervention for various medical conditions. The emergence of cloud-based robot-assisted systems has opened new possibilities for efficient and remote health monitoring. In this paper, we present a Transformer-based Multi-modal Fusion approach for health monitoring, focusing on the effects of cognitive workload, assessment of cognitive workload in human-machine collaboration, and acceptability in human-machine interactions.

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Background: The programed death ligand-1 combined positive score (PD-L1 CPS), the only FDA-approved biomarker for immune checkpoint inhibitor therapy in gastric cancer (GC) patients, is an important but imperfect predictive biomarker. The molecular characteristics of tumors that influence the PD-L1 CPS are largely unknown and would be helpful for screening patients who would benefit from immunotherapy.

Methods: PD-L1 immunohistochemistry (IHC) and targeted next-generation sequencing techniques were used to compare genomic alterations in 492 GC patients in two groups (PD-L1 CPS ⩾ 1, positive; CPS < 1, negative).

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Introduction: Medical images and signals are important data sources in the medical field, and they contain key information such as patients' physiology, pathology, and genetics. However, due to the complexity and diversity of medical images and signals, resulting in difficulties in medical knowledge acquisition and decision support.

Methods: In order to solve this problem, this paper proposes an end-to-end framework based on BERT for NER and RE tasks in electronic medical records.

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In order to improve the mechanical properties and deformation characteristics of permeable concrete, glass fiber was added to this type of concrete. Based on an unconfined compressive strength test, non-contact full-field strain measurement system, and scanning electron microscopy test, the effects of aggregate particle composition, shaking time, fly ash content, fiber length, and fiber content on the strength and permeability of permeable concrete were studied. The results show that the strength and water permeability of permeable concrete are negatively correlated with an increase in shaking time.

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  • The study evaluates the effectiveness of MRI for detecting placenta accreta (PA) in prenatal cases where suspicions arise.
  • A review of 50 placental MRI exams identified key MRI signs correlated with varying types of placenta accreta, with 33 patients requiring cesarean hysterectomy.
  • The findings affirm that MRI is a crucial tool, especially when ultrasound results are unclear, enhancing assessment of how deeply the placenta invades surrounding tissues.
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For the catalytic combustion reaction of chlorinated volatile organic compounds (CVOCs), the redox properties and acid sites of the catalyst surface are key factors in determining the activity, selectivity, and chlorine-resistance stability. Herein, a series of SnMnO catalysts for the catalytic combustion of CVOCs were prepared by the changing of Sn-doping way to regulate the electron valance state of Mn element, including reflux (R-SnMnO ), co-precipitation (C-SnMnO ) and impregnation (I-SnMnO ). It was discovered that the R-SnMnO catalyst had better activity and chlorine resistance than the R-MnO , C-SnMnO and I-SnMnO catalyst, and we discovered that the doping ways of Sn in MnO catalyst could regulate greatly the surface acidity, active oxygen species, the chemical state of Mn species, and redox ability.

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  • - The study addresses the limitations of existing models in accurately classifying individual Motor Imagery (MI) EEG signals, which are essential for medical rehabilitation and intelligent control applications.
  • - Researchers introduce a new technique called the multi-branch graph adaptive network (MBGA-Net) that adapts to individual EEG signals using advanced processing methods and a deep learning approach to better capture relevant features.
  • - Testing with multiple datasets shows that MBGA-Net achieves high average accuracy rates (around 85-88%) and a low variance in individual results, indicating its effectiveness and potential for real-world EEG classification applications.
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We propose and simulate a compact (∼29.5 µm-long) nonvolatile polarization switch based on an asymmetric SbSe-clad silicon photonic waveguide. The polarization state is switched between TM and TE mode by modifying the phase of nonvolatile SbSe between amorphous and crystalline.

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Background: TP53 is one of the most frequent mutated genes in colon cancer. Although colon cancer with TP53 mutations has a high risk of metastasis and worse prognosis generally, it showed high heterogeneity clinically.

Methods: A total of 1,412 colon adenocarcinoma (COAD) samples were obtained from two RNA-seq cohorts and three microarray cohorts, including the TCGA-COAD ( = 408), the CPTAC-COAD ( = 106), GSE39582 ( = 541), GSE17536 ( = 171) and GSE41258 ( = 186).

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Objectives: To non-invasively predict the coexistence of isocitrate dehydrogenase (IDH) mutation and O6-methylguanine-DNA methyltransferase (MGMT) promoter methylation in adult-type diffuse gliomas using apparent diffusion coefficient (ADC) histogram and direct ADC measurements and compare the diagnostic performances of the two methods.

Materials And Methods: A total of 118 patients with adult-type diffuse glioma who underwent preoperative brain magnetic resonance imaging (MRI) and diffusion weighted imaging (DWI) were included in this retrospective study. The patient group included 40 patients with coexisting IDH mutation and MGMT promoter methylation (IDHmut/MGMTmet) and 78 patients with other molecular status, including 32 patients with IDH wildtype and MGMT promoter methylation (IDHwt/MGMTmet), one patient with IDH mutation and unmethylated MGMT promoter (IDHmut/MGMTunmet), and 45 patients with IDH wildtype and unmethylated MGMT promoter (IDHwt/MGMTunmet).

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Purpose: This study aimed to develop deep learning (DL) models based on multicentre biparametric magnetic resonance imaging (bpMRI) for the diagnosis of clinically significant prostate cancer (csPCa) and compare the performance of these models with that of the Prostate Imaging and Reporting and Data System (PI-RADS) assessment by expert radiologists based on multiparametric MRI (mpMRI).

Methods: We included 1861 consecutive male patients who underwent radical prostatectomy or biopsy at seven hospitals with mpMRI. These patients were divided into the training (1216 patients in three hospitals) and external validation cohorts (645 patients in four hospitals).

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Article Synopsis
  • Iron deficiency limits crop yields in calcareous soil, prompting the development of a new Fe chelator called proline-2'-deoxymugineic acid (PDMA) to address this issue.
  • Research involving pot and field experiments showed that PDMA helps dissolve insoluble iron and enhances iron nutrition in peanut plants by increasing the expression of the AhYSL1 gene.
  • The application of PDMA significantly improved peanut yields and micronutrient content, showing its potential as an effective solution for enhancing agricultural productivity in iron-deficient soils.
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