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Gut microbiota in cancer initiation,development and therapy

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Science China Life Sciences 2025年

作者： Ruyi Zhang Xiang Zhang Harry Cheuk Hay Lau Jun yu Institute of Digestive Disease and Department of Medicine and Therapeutics State Key Laboratory of Digestive DiseaseLi Ka Shing Institute of Health SciencesCUHK Shenzhen Research InstituteThe Chinese University of Hong Kong

Cancer has long been associated with genetic and environmental factors,but recent studies reveal the important role of gut microbiota in its initiation and *** 13%of cancers are linked to infectious agents,highlighting the need to identify the specific microorganisms *** microbiota can either promote or inhibit cancer growth by influencing oncogenic signaling pathways and altering immune *** can lead to cancer,while certain probiotics and their metabolites may help reestablish microecological balance and improve anti-tumor immune *** into targeted approaches that enhance therapy with probiotics is ***,the effects of probiotics in humans are complex and not yet fully ***,methods to counteract harmful bacteria are still in *** clinical trials also indicate that modifying gut microbiota may help manage side effects of cancer *** research is crucial to understand better how gut microbiota can be used to improve cancer prevention and treatment outcomes.

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A Novel Self-Supervised Learning Network for Binocular Disparity Estimation

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 209-229页

作者： Jiawei Tian yu Zhou Xiaobing Chen Salman A.AlQahtani Hongrong Chen Bo Yang Siyu Lu Wenfeng Zheng Department of Computer Science and Engineering Major in Bio Artificial IntelligenceHanyang UniversityAnsan-si15577Republic of Korea School of Electrical and Computer Engineering Louisiana State UniversityBaton RougeLA 70803USA Department of Computer Engineering College of Computer and Information SciencesKing Saud UniversityRiyadh11574Saudi Arabia School of Automation University of Electronic Science and Technology of ChinaChengdu610054China

Two-dimensional endoscopic images are susceptible to interferences such as specular reflections and monotonous texture illumination,hindering accurate three-dimensional lesion reconstruction by surgical *** study proposes a novel end-to-end disparity estimation model to address these *** approach combines a Pseudo-Siamese neural network architecture with pyramid dilated convolutions,integrating multi-scale image information to enhance robustness against lighting *** study introduces a Pseudo-Siamese structure-based disparity regression model that simplifies left-right image comparison,improving accuracy and *** model was evaluated using a dataset of stereo endoscopic videos captured by the Da Vinci surgical robot,comprising simulated silicone heart sequences and real heart video *** results demonstrate significant improvement in the network’s resistance to lighting interference without substantially increasing ***,the model exhibited faster convergence during training,contributing to overall performance *** study advances endoscopic image processing accuracy and has potential implications for surgical robot applications in complex environments.

关键词： Parallax estimation parallax regression model self-supervised learning Pseudo-Siamese neural network pyramid dilated convolution binocular disparity estimation

Statistical analysis on the validity of the cold plasma approximation for chorus waves based on Van Allen Probe observations and their effects on radiation belt electrons

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Earth and Planetary Physics 2025年第1期9卷 159-170页

作者： AoJun Ren Jiang yu Jing Wang ZuZheng Chen XiaoMan Liu Planetary Environmental and Astrobiological Research Laboratory(PEARL) School of Atmospheric SciencesSun Yat-sen UniversityZhuhai Guangdong 519000China

Theoretical analysis has demonstrated that the dispersion relation of chorus waves plays an essential role in the resonant interaction and energy transformation between the waves and magnetospheric *** quantitative analyses often simplified the chorus dispersion relation by using the cold plasma ***,the applicability of the cold plasma assumption is doubtful,especially during geomagnetic *** here present a systematic statistical analysis on the validity of the cold plasma dispersion relation of chorus waves based on observations from the Van Allen Probes over the period from 2012 to *** statistical results show that the observed magnetic field intensities deviate substantially from those calculated from the cold plasma dispersion relation and that they become more pronounced with an increase in geomagnetic activity or a decrease in background plasma *** region with large deviations is mainly concentrated in the nightside and expands in both the radial and azimuthal directions as the geomagnetic activity increases or the background plasma density *** addition,the bounce-averaged electron scattering rates are computed by using the observed and cold plasma dispersion relation of chorus *** with usage of the cold plasma dispersion relation,usage of the observed dispersion relation considerably lowers the minimum resonant energy of electrons and lowers the scattering rates of electrons above tens of kiloelectronvolts but enhances those ***,these differences are more pronounced with the enhancement of geomagnetic activity or the decrease in background plasma density.

关键词： chorus waves cold plasma approximation dispersion relations scattering rates

The Commutant of Analytic Toeplitz Operators on Bergman Space

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Acta Mathematica Sinica,English Series 2008年第10期24卷 1737-1750页

作者： yu cheng LI Department of Mathematics Hebei Normal University Shijiazhuang 050016 P. R. China

In this paper, using the matrix skills and operator theory techniques we characterize the commutant of analytic Toeplitz operators on Bergman space. For f（z） = z^ng（z）（n ≥1）, g（z） = b0 ＋ b1z^p1 ＋b2z^p2 ＋.. , bk ≠ 0 （k = 0, 1, 2,...）, our main result is =A′（Mf） = A′（Mzn）∩A′（Mg） = A′（Mz^s）, where s = g.c.d.（n,p1,p2,...）. In the last section, we study the relation between strongly irreducible curve and the winding number W（f,f（α））, α ∈ D.

关键词： Bergman space analytic Toeplitz operator commutant strong irreducibility

Numerical investigation of low cycle fatigue life for channel wall nozzles

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航空动力学报 2018年第7期33卷 1553-1565页

作者： cheng cheng WANG Yibai LIU yu LIN Qingguo Research and Development Center Shanghai Institute of Space Propulsion Shanghai 201112 China Shanghai Engineering Research Center of Space Engine Shanghai 201112 China School of Astronautics Beijing University of Aeronautics and Astronautics

The thermal-structural response and low cycle fatigue life of a three-dimensional(3D)channel wall nozzle with regenerative cooling were numerically investigated by coupling the finite volume fluid-thermal method,nonlinear finite element thermal-structural analysis and local strain *** nozzle had a high area ratio(nozzle exit area divided by throat area)under cyclic working *** studies were carried out to evaluate the effects of channel structural parameters such as channel width,channel height,liner thickness and rib *** showed that the integrated effects of three-dimensional channel structure and load distribution caused serious strain,which mainly occurred at the intersectant regions of liner wall on the gas side and the symmetric planes of channel and *** cooling effect and channel structural strength were significantly improved as the channel width and height decreased,leading to substantial extension of the nozzle service *** the other hand,the successive decrease in liner thickness and rib width apparently increased the strain amplitude and residual strain of channel wall nozzle during cyclic work,significantly shortening the service *** present work is of value for design of the channel wall nozzle to prolong its cyclic service life.

关键词： liquid propellant rocket engine low cycle fatigue channel wall nozzle regenerative cooling nonlinear structural analysis finite element method

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经济不确定性、资产效应与居民消费

云南财经大学学报 2025年第1期41卷 1-18页

作者：李一帆于海东李成中国银行研究院北京100818 中国建设银行研修中心(研究院) 北京100033 西安交通大学经济与金融学院西安710061

构建包含经济不确定性的居民最优消费决策数理模型,推导出经济不确定性影响居民消费的资产效应机制,运用中国家庭追踪调查数据,设立省际经济不确定性指数,并进行实证检验。研究发现:整体上看,经济不确定性通过资产效应机制降低了居民消... 详细信息

构建包含经济不确定性的居民最优消费决策数理模型,推导出经济不确定性影响居民消费的资产效应机制,运用中国家庭追踪调查数据,设立省际经济不确定性指数,并进行实证检验。研究发现:整体上看,经济不确定性通过资产效应机制降低了居民消费支出。经济不确定性上升引发市场系统性风险上升,提高了居民资产的风险溢价,迫使资产价值缩水,降低了居民对风险资产市场的投资意愿和参与程度,导致资产性收入下降,最终抑制居民消费支出。结构上看,经济不确定性主要通过降低房产价值和资产性收入的路径抑制消费支出,其中承担房贷的居民受经济不确定性的负向影响更明显,消费缩减程度更大。由于国内居民资产配置结构不均衡,金融产品对家庭消费的资产效应相对较弱,经济不确定性难以通过股票等金融资产价值和金融市场参与度影响消费。

关键词：经济不确定性资产效应居民消费资产性收入

Effect of acupressure on postpartum low back pain, salivary cortisol, physical limitations, and depression: a randomized controlled pilot study

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Journal of Traditional Chinese Medicine 2020年第1期40卷 128-136页

作者： cheng Hsuesh-yu Carol Shieh Wu Bei-yu cheng yu-Fen Department of Nursing Kaohsiung Chang Gung Memorial HospitalKaohsiung 80830Taiwan China Department of Community and Health Systems Indiana University School of NursingIndiana 600USA Department of Chinese Medicine Kaohsiung Chang Gung Memorial HospitalKaohsiung 80830Taiwan China

OBJECTIVE:To investigate the effect of acupressure on postpartum low back pain(LBP),salivary cortisol,physical limitations,and postpartum ***:Participants were 70 postpartum women who were randomly assigned to either an intervention(n=35)or a control(n=35)*** intervention group received 10 acupressure sessions(1 session per day,5 d per week).The control group received 10 sham acupressure *** were assessed using a visual analogue scale(LBP intensity),salivary cortisol values(LBP biomarker),and Chinese versions of the Roland-Morris Disability Questionnaire(daily activity limitations),Oswes-try Disability Index(physical activity limitations),and the Edinburgh Postnatal Depression Scale(postpartum depression).RESULTS:Participants in the intervention group had significantly lower levels of LBP intensity,daily activity limitations,physical activity limitations,and postpartum depression than those in the control *** was no significant between-group difference in salivary ***:Acupressure may reduce postpartum LBP intensity and limitations in daily and physical activity,and alleviate postpartum depressive *** should be offered in postpartum care settings as an alternative treatment for postpartum women with LBP.

关键词： Acupressure Low back pain Postpartum period Depression Randomized controlled trial Pilot projects

Preparation of Modified Composite Nanofiltration Membrane Synergistically Using Carboxylic Multi- walled Carbon Nanotube and β-cyclodextrin

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 232-239页

作者： LIU Peng MAO Junpeng FANG Yanfeng yu yunwu CHEN Changxiu TANG Ning WAN Ye GU Yaxin LIU yunxue WANG Lihua School of Materials Science and Engineering Shenyang Jianzhu UniversityShenyang 110168China

A new modified blend ultrafiltration(UF)membrane with good hydrophilicity,high porosity and excellent anti-fouling performance was developed by using carboxylic multi-walled carbon nanotube(CMWCNT)as casting solution ***,a composite nanofiltration(NF)membrane with large water flux and good retention rate was fabricated by using the PVDF/CMWCNT blend UF membrane as the substrate,and polyvinyl alcohol(PVA),β-cyclodextrin(β-CD)and polyethylenimine(PEI)as the coating *** results show that with the appropriate addition of CMWCNT in the casting solution,the surface roughness,porosity and recovery rate of the PVDF/CMWCNT blend UF membrane is obviously *** water flux of blend UF membrane is significantly improved when the CMWCNT content increases from 0 wt%to 0.2 wt%.The water flux of blend UF membrane with 0.2 wt%CMWCNT is 162.7 L/(m^(2)·h),which is 44.3%higher than that of the pure PVDF ***β-CD content is 0.8 wt%,the retention rate of Congo red by PVDF/CMWCNT/β-CD composite NF membrane reaches 98.7%,which is 28.3%higher than that of single PVA/PEI modified *** research will provide a new idea and simple method for developing novel high-performance composite NF membranes.

关键词： CMWCNT cyclodextrin nanofiltration membrane

Adaptive robust beamformer for multi-pair two-way relay networks with imperfect channel state information

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Frontiers of Information Technology & Electronic Engineering 2016年第3期17卷 265-280页

作者： Jin WANG Feng SHU ri-qing CHEN yu-di CUI yu CHEN Jun LI School of Electronic and Optical Engineering Nanjing University of Science and Technology College of Computer and Information Sciences Fujian Agriculture and Forestry University National Mobile Communications Research Laboratory Southeast University

In wideband multi-pair two-way relay networks, the performance of beamforming at a relay station(RS) is intimately related to the accuracy of the channel state information(CSI) available. The accuracy of CSI is determined by Doppler spread, delay between beamforming and channel estimation, and density of pilot symbols,including transmit power of pilot symbols. The coefficient of the Gaussian-Markov CSI error model is modeled as a function of CSI delay, Doppler spread, and signal-to-noise ratio, and can be estimated in real time. In accordance with the real-time estimated coefficients of the error model, an adaptive robust maximum signal-to-interferenceand-noise ratio(Max-SINR) plus maximum signal-to-leakage-and-noise ratio(Max-SLNR) beamformer at an RS is proposed to track the variation of the CSI error. From simulation results and analysis, it is shown that: compared to existing non-adaptive beamformers, the proposed adaptive beamformer is more robust and performs much better in the sense of bit error rate(BER); with increase in the density of transmit pilot symbols, its BER and sum-rate performances tend to those of the beamformer of Max-SINR plus Max-SLNR with ideal CSI.

关键词： Multi-pair two-way relay Adaptive robust beamformer Channel state information (CSI) Maximumsignal-to-interference-and-noise ratio (Max-SINR) Maximum signal-to-leakage-and-noise ratio (Max-SLNR)