Search Results - Lu XU
-
1
Between a Rock and a Hard Place: The Educational Dilemma of Migrant Children in China
Published 2025-07-01Get full textThis article explores the educational challenges faced by migrant children in China, examining their experiences in both inflow cities and hometowns. Drawing on 94 in-depth interviews conducted in 2022 with returned migrant children and adults, as well as an empirical survey involving 1,865 returned...
Article -
2
A Mixed Chaotic Image Encryption Method Based on Parallel Rotation Scrambling in Rubik’s Cube Space
Published 2025-05-01Get full textMost image encryption methods based on Rubik’s cube scrambling adopt the idea of cyclic shift or map the image pixels to the cube surface, not fully considering the cube’s three-dimensional (3D) properties. In response to this defect, we propose a mixed chaotic color image encryption method based on...
Article -
3
Generation of High-Purity Laguerre–Gaussian Beams by Spatial Filtering
Published 2019-01-01Get full textWe theoretically and experimentally demonstrate that high-purity Laguerre–Gaussian beams can be efficiently obtained from Gaussian vortex beams using a typical 4F spatial filtering optical system, in which spatial filtering does not affect the spiral phase and the energy loss is very smal...
Article -
4
Optimal Dark Tea Fertilization Enhances the Growth and Flower Quality of Tea Chrysanthemum by Improving the Soil Nutrient Availability in Simultaneous Precipitation and High-Temper...
Published 2025-07-01Get full textThe simplex strategies of fertilizer management and problems caused by simultaneous precipitation and high-temperature (SPH) climate were the main factors that led to yield loss and quality decline in the continuous cropping of tea chrysanthemum (<i>Dendranthema morifolium</i> ‘Jinsi Hua...
Article -
5
Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse
Published 2020-01-01Get full textA polarization lidar with dual Geiger-mode avalanche photodiodes (Gm-APDs) is designed to obtain the high-precision depth image of shallow semitransparent media by using a wide laser pulse. The first surface of the semitransparent media is smooth and can nearly preserve the incident polarization, wh...
Article -
6
Integrating image segmentation and auxiliary data for efficient estimation of FVC and AGB
Published 2025-12-01Get full textAbstract:: Accurate estimation of fractional vegetation cover (FVC) and aboveground biomass (AGB) is essential for large-scale grassland monitoring. However, this process is often constrained by the labor-intensive nature of field surveys. In this study, we propose a fully non-destructive framework...
Article -
7
Evolution of causes of death in maintenance hemodialysis patients and the influencing factors： a single-center study
Published 2025-06-01Get full textObjectiveTo investigate changes in the causes of death among maintenance hemodialysis （MHD） patients over eight years， and to analyze associated risk factors， thus providing theoretical support for reducing the mortality in this population.MethodsClinical data of 636 MHD patients treated in the Xinx...
Article -
8
Taraxasterol from Taraxacum prevents concanavalin A-induced acute hepatic injury in mice via modulating TLRs/NF-κB and Bax/Bc1-2 signalling pathways
Published 2019-12-01Get full textImmune hepatic injury is a liver disease closely related to an immune imbalance of T cells and macrophages. Our previous series of studies have demonstrated that taraxasterol isolated from Taraxacum possesses great anti-inflammatory and immunomodulatory effects in vivo and in vitro. In this study, w...
Article -
9
Liver metastases in thyroid cancer: epidemiology, risk stratification and survival outcomes in the immunotherapy era
Published 2025-07-01Get full textPurposeLiver metastases in thyroid cancer are rare but fatal, with poorly defined risk profiles and survival outcomes. This study aimed to characterize epidemiology, risk factors and outcomes of this disease using a population-based approach, further explore the potential impact of the immunotherapy...
Article -
10
The effect of miR-23b-3p on regulating GH by targeting POU1F1 in Yanbian yellow cattle
Published 2024-12-01Get full textThis study aimed to evaluate the effect of miR-23b-3p on growth hormone (GH) in pituitary cells of Yanbian yellow cattle. The mRNA and protein levels of GH and miR-23b-3p target genes were measured by real time fluorescence quantitative PCR (qPCR) and Western blot, respectively. The target relations...
Article -
11
Switchable Microwave Photonic Filter Between Low-Pass and High-Pass Responses
Published 2016-01-01Get full textA novel and simple microwave photonic filter (MPF) is proposed and experimentally demonstrated. The MPF can be switched between low-pass and high-pass frequency responses. The MPF is realized by using an electro-optic phase modulator (EOPM) and two cascaded tunable optical bandpass filters (TOBFs)....
Article -
12
A Tunable Single Passband Microwave Photonic Filter of Overcoming Fiber Dispersion Induced Amplitude Fading
Published 2017-01-01Get full textA tunable single passband microwave photonic filter (MPF) of overcoming fiber dispersion induced amplitude fading of the microwave passband is proposed and demonstrated. The passband amplitude of the MPF can be kept invariant for different central frequencies. The scheme is realized based on a dual-...
Article -
13
A real-world study on the efficacy and safety of low-dose PD-1 monoclonal antibody alone or in combination as the first-line treatment for advanced non-small cell lung cancer
Published 2025-06-01Get full textBackground In clinical practice, patients with non-small cell lung cancer (NSCLC) often receive low-dose programmed death-1 (PD-1) monoclonal antibodies due to physical or financial limitations. However, the efficacy and safety of low-dose compared with standard-dose PD-1 monoclonal antibodies remai...
Article -
14
No increased risk of intussusception after pentavalent rotavirus vaccination in China: a retrospective birth cohort using electronic health records of Ningbo city
Published 2023-12-01Get full textSome post-licensure studies have shown a potential increased risk of intussusception following vaccination with rotavirus vaccines. This is the first study that aimed to assess the incidence and risk of intussusception within 90 days after vaccination with RotaTeq in Chinese infants. A population-ba...
Article -
15
Effects of straw returning and nitrogen fertilizer management on soil nitrogen supply and yield of direct seeding rice under wheat (rape)-rice rotation
Published 2022-02-01Get full textThe positioning test was carried out in the Chongzhou Experimental Base of Sichuan Agricultural University in 2018—2019, aiming at exploring the effects of straw returning and nitrogen (N) fertilizer management on soil N supply and yield of direct seeding rice under the wheat (rape)-rice rotation. T...
Article -
16
CTV-MIND: A cortical thickness-volume integrated individualized morphological network model to explore disease progression in temporal lobe epilepsy
Published 2025-01-01Get full textTemporal lobe epilepsy (TLE) is a progressive brain network disorder. Elucidating network reorganization and identifying disease progression-associated biomarkers are crucial for understanding pathological mechanisms, quantifying disease burden, and optimizing clinical strategies. This study aimed t...
Article -
17
Monitoring of the Physicochemical Properties and Aflatoxin of <i>Aspergillus flavus</i>-Contaminated Peanut Kernels Based on Near-Infrared Spectroscopy Combined with Machine Learni...
Published 2025-06-01Get full textThis study explores the application of near-infrared (NIR) spectroscopy combined with machine learning for the non-destructive detection of aflatoxin in peanuts contaminated by <i>Aspergillus flavus</i> (<i>A. flavus</i>). The key innovation lies in the development of an opti...
Article -
18
A Meteorological Data-Driven eLoran Signal Propagation Delay Prediction Model: BP Neural Network Modeling for Long-Distance Scenarios
Published 2025-07-01Get full textThe timing accuracy of eLoran systems is susceptible to meteorological fluctuations, with medium-to-long-range propagation delay variations reaching hundreds of nanoseconds to microseconds. While conventional models have been widely adopted for short-range delay prediction, they fail to accurately c...
Article -
19
A bright polarization-entangled photon pair source based on silicon photonics integration
Published 2025-06-01Get full textDeveloping a high-quality, bright source of polarization-entangled photon pairs on CMOS-compatible integrated platforms, such as silicon or silicon nitride, remains a significant challenge. Here, a novel silicon chip-based nonlinear Sagnac interferometer, which mainly integrates a bidirectionally pu...
Article -
20
A multiplex real-time PCR assay for simultaneous detection of classical swine fever virus, African swine fever virus, and atypical porcine pestivirus
Published 2023-02-01Get full textWith the implementation of the C-strain vaccine, classical swine fever (CSF) has been under control in China, which is currently in a chronic atypical epidemic situation. African swine fever (ASF) emerged in China in 2018 and spread quickly across the country. It is presently occurring sporadically...
Article