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Chinese Journal of Aeronautics 2025年第1期38卷 607-621页

作者： Shuyan NIE Xin PAN Liming CHEN bing du Jie WANG College of Aerospace Engineering Chongqing UniversityChongqing 400030China College of Material and New Energy Chongqing University of Science and TechnologyChongqing 401331China

The high-temperature mechanical behaviors of Multi-Layer Composite Panels(MCP)and Corrugated Sandwich Panels(CSP)of Continuous Glass Fiber-Reinforced Polypropylene(CGFRPP)are critical for their application in aerospace fields,which have been rarely mentioned in previous ***-temperature quasi-static tensile and compression tests on CGFRPP MCP are conducted *** results showed that the tensile and compression strength,stiffness,and tensile modulus of MCP decreased with increasing *** Gibson model was found to be more suitable for predicting the high-temperature mechanical performance of MCP after comparing the calculated results of different theoretical models with experimental ***,hightemperature planar compression tests were conducted on the CGFRPP CSP,revealing that the main failure modes were corrugated core buckling and delamination between the face panel and core material,with delamination being intensified at higher ***,we proposed a strength theoretical model that considers structural buckling failure and interface delamination failure,and introduced the influence factor to evaluate the effect of interface delamination on structural strength.

关键词： High-temperature effect Fiber reinforced plastic Composite structure Sandwich structure Interface delamination Strength theory

Independent component analysis to physical-layer network coding over wireless fading channels

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Journal of Systems Engineering and Electronics 2013年第2期24卷 196-203页

作者： bing du Xiaoming Tao Department of Electronic Engineering Tsinghua University

A new combinational technology is proposed,which is feasible to apply physical-layer network coding（PNC） to wireless fading channels by employing the harmful interference *** key step of PNC is that sources broadcast signals simultaneously without orthogonal ***,the signals overlap in the free space at the *** the signals from different sources are mutual independent,rooted on this rational assumption,an enhanced joint diagonalization separation named altering row diagonalization（ARD） algorithm is exploited to separate these signals by maximizing the cost function measuring independence among *** ARD PNC（APNC） methodology provides an innovative way to implement signal-level network coding at the presence of interference and without any priori information about channels in fading *** conclusions,the proposed APNC performs well with higher bandwidth utility and lower error rate.

关键词： physical-layer network coding (PNC) independentcomponent analysis (ICA) joint diagonalization network coding cooperative communications.

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电动汽车胶粘型电机铁芯加工装备效能优化

汽车工程 2025年第1期47卷 178-186,177页

作者：崔海龙杜冰黄秀东刘凤华刘雪东周茂伟燕山大学先进锻压成形技术与科学教育部重点实验室秦皇岛066000 燕山大学先进制造成形技术及装备国家地方联合工程研究中心秦皇岛066000 河北省金属精密塑性加工工程技术研究中心秦皇岛066000 宁波震裕科技股份有限公司宁波315613

随着我国“双碳”战略的深入实施,电动汽车迅速发展。生产驱动电机铁芯的胶粘工艺受到了越来越多的关注。本研究针对胶粘型铁芯生产流程各工序节拍匹配不协调导致生产效率受到限制这一问题,通过解决胶粘型电机铁芯加工装备——回转叠压... 详细信息

随着我国“双碳”战略的深入实施,电动汽车迅速发展。生产驱动电机铁芯的胶粘工艺受到了越来越多的关注。本研究针对胶粘型铁芯生产流程各工序节拍匹配不协调导致生产效率受到限制这一问题,通过解决胶粘型电机铁芯加工装备——回转叠压机构的驱动装置选择与参数设置等问题,达到了降低生产成本并提高生产效率的目的。本研究基于灰色理论,形成了一种综合性的多目标优化方法,旨在提高电机铁芯加工装备驱动装置选择的准确性、参数设置的精确性。

关键词：胶粘型铁芯灰色理论效能优化电动汽车

EGCG and ECG induce apoptosis and decrease autophagy via the AMPK/mTOR and PI3K/AKT/mTOR pathway in human melanoma cells

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Chinese Journal of Natural Medicines 2022年第4期20卷 290-300页

作者： du bing-Xin LIN Pei LIN Jun School of Life Sciences and Health Engineering Jiangnan UniversityWuxi 214122China

Catechins have been proven to exert antitumor effects in different kinds of ***,the underlying mechanisms have not been completely clarified *** study aimed to assess the effects and mechanisms of(-)-epigallocatechin-3-gallate(EGCG)and(-)-epicatechin-3-gallate(ECG)on human melanoma skin A375 *** showed that EGCG and ECG inhibited the proliferation of A375 cells and ECG showed better inhibitory *** cytometry analysis had shown that EGCG and ECG induced apoptosis and led to cell cycle *** and ECG decreased Bcl-2 expression and upregulated Caspase-3 protein level,indicating the development of ***,EGCG and ECG could decreased mitochondrial membrane potential of A375 *** addition,the expression of Beclin-1,LC3 and Sirt3 were downregulated at protein levels,which known to be associated with *** autophagy was increased by rapamycin,the apoptotic trend was not change,indicating that apoptosis and autophagy are ***,EGCG and ECG treatments decreased phosphorylated-AMPK(p-AMPK)and increased the ratios of P-PI3K,p-AKT and p-mTOR in melanoma ***,EGCG and ECG induced apoptosis via mitochondrial signaling pathway,downregulated autophagy through modulating the AMPK/mTOR and PI3K/AKT/mTOR signaling *** indicated that EGCG and ECG may be utilized in human melanoma treatment.

关键词： EGCG ECG Apoptosis Autophagy PI3K/AKT/mTOR

九蒸九制黄精多糖的结构特征及其抑制氧化应激作用

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粮油食品科技 2025年第1期33卷 174-182页

作者：刘瑜彬陈昶安苏怡琳罗珍颜瑾黎攀杜冰无限极(中国)有限公司广东广州510665 华南农业大学食品学院广东广州510642

为探讨传统炮制处理的黄精多糖(NPKP)结构特性及其抗氧化作用,通过单糖组成分析,NPKP包含鼠李糖(3.5%)、阿拉伯糖(4.6%)、半乳糖(78.2%)、葡萄糖(2.1%)、木糖(1.0%)、甘露糖(1.3%)和半乳糖醛酸(9.4%)。分子量分析结果显示,NPKP主要含有... 详细信息

为探讨传统炮制处理的黄精多糖(NPKP)结构特性及其抗氧化作用,通过单糖组成分析,NPKP包含鼠李糖(3.5%)、阿拉伯糖(4.6%)、半乳糖(78.2%)、葡萄糖(2.1%)、木糖(1.0%)、甘露糖(1.3%)和半乳糖醛酸(9.4%)。分子量分析结果显示,NPKP主要含有两类组分,组分1的重均分子量为196857 Da,组分2为13653 Da。甲基化分析表明,NPKP主要通过→4)-Glap-(1→糖苷键连接,摩尔占比31.8%,分支度51.7%。结合碘-碘化钾实验,证实NPKP是一种具有复杂分支结构的多糖。体外细胞试验结果表明,NPKP在显著降低HepG2细胞内活性氧(ROS)水平的同时,增加了抗氧化酶(超氧化物歧化酶、过氧化氢酶)和抗氧化物谷胱甘肽的表达,缓解了游离脂肪酸诱导的氧化应激损伤。通过这些作用机制,NPKP展示了显著的抗氧化能力,为黄精多糖作为天然抗氧化剂的潜在应用提供了基础数据,为其在缓解氧化应激相关疾病中的应用提供了科学依据。

关键词：九蒸九制黄精黄精多糖多糖结构氧化应激抗氧化

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Resistance welding of glass fiber reinforced thermoplastic composite:Experimental investigation and process parameter optimization

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Chinese Journal of Aeronautics 2020年第12期33卷 3469-3478页

作者： bing du Liming CHEN Houchang LIU Qinghao HE Weiming QIN Weiguo LI College of Aerospace Engineering Chongqing UniversityChongqing 400030China Chongqing Key Laboratory of Heterogeneous Material Mechanics Chongqing UniversityChongqing 400030China Chongqing Key Laboratory of Nano–Micro Composite Materials and Devices School of Metallurgy and Materials EngineeringChongqing University of Science and TechnologyChongqing 401331China Centre for Advanced Materials Technology School of AerospaceMechanical and Mechatronic EngineeringThe University of SydneyNSW 2006Australia

The utilization of fiber reinforced thermoplastics(FRTP)is expected to fulfill lightweight demand in mass-produced aerospace *** the unavoidable assembly of FRTP parts,fusion bonding methods such as resistance welding are promising compared with mechanical joint and adhesive *** this paper,a procedure has been brought out to understand the relationship between processing conditions and performance of the FRTP welding *** adherends were continuous glass fiber reinforced polypropylene(GF/PP)laminates fabricated by hotpressing *** influences of time,current and pressure on the bending strength of the resistance welding joints were investigated.A processing window was drawn based on the optical observation of welded *** quantitative relationship between process parameters and mechanical property of GF/PP welding joint was established by Response Surface Method(RSM)with high *** was found that bending strength of GF/PP welding joint was improved by 31%compared with hot-pressing benchmark.

关键词： Mechanical property Processing parameters Resistance welding Response Surface Method Thermoplastic

Collaborative image compression and classification with multi-task learning for visual Internet of Things

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Chinese Journal of Aeronautics 2022年第5期35卷 390-399页

作者： bing du Yiping duAN Hang ZHANG Xiaoming TAO Yue WU Congchong RU School of Computer and Communication Engineering University of Science and Technology BeijingBeijing 100083China Department of Electronic Engineering Tsinghua UniversityBeijing 100084China School of Computer Science and Technology Xidian UniversityXian 710071China Smart Network Computing Lab Cross-strait Tsinghua Research InstitutionBeijing 100084China

Widespread deployment of the Internet of Things(Io T)has changed the way that network services are developed,deployed,and *** onboard advanced Io T devices are equipped with visual sensors that form the so-called visual Io ***,the sender would compress images,and then through the communication network,the receiver would decode images,and then analyze the images for ***,image compression and semantic inference are generally conducted separately,and thus,current compression algorithms cannot be transplanted for the use of semantic inference directly.A collaborative image compression and classification framework for visual Io T applications is proposed,which combines image compression with semantic inference by using multi-task *** particular,the multi-task Generative Adversarial Networks(GANs)are described,which include encoder,quantizer,generator,discriminator,and classifier to conduct simultaneously image compression and *** key to the proposed framework is the quantized latent representation used for compression and *** with perceptual quality can achieve low bitrate compression and reduce the amount of data *** addition,the design in which two tasks share the same feature can greatly reduce computing resources,which is especially applicable for environments with extremely limited *** extensive experiments,the collaborative compression and classification framework is effective and useful for visual IoT applications.

关键词： Deep learning Generative Adversarial Network(GAN) Image classification Image compression Internet of Things

Modulation of fasting blood glucose by raw banana powder in alloxan-induced diabetic rats

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International Journal of Agricultural and Biological Engineering 2013年第3期6卷 94-102页

作者： Bai Yongliang Yu Ming du bing Chen Qingfa Yang Gongming College of Food Science South China Agricultural UniversityGuangzhou 510642China

This study aimed to observe the influence of raw banana powder(RBP)on fasting blood glucose(FBG),blood lipid and other biochemical indicators in type-2 diabetic rats and therefore to provide experimental evidences for developing suitable food from banana powder for diabetic *** Sprague-Dawley rats were selected randomly as the normal control group(NCG)before the *** establishing type-2 diabetic rat models(11.1-16.7 mmoL/L)by alloxan,32 rats were divided into four groups:the diabetic control group(DCG,n=8),low-dose group(LDG,n=8),middle-dose group(MDG,n=8)and high-dose group(HDG,n=8).The LDG,MDG and HDG rats received gastric perfusion of RBP at the doses of 2 g/kg,4 g/kg and 6 g/kg per day,*** four weeks,oral glucose tolerance test was carried out in each group,and then the FBG level,blood lipid,insulin,short chain fatty acids content,pH value of colon content and other biochemical indicators of rats in each group were determined and compared among the *** showed that the levels of FBG significantly decreased in the LDG(11.97±0.83),MDG(8.95±0.45)and HDG(9.28±1.45),compared with their initial values(13.00±1.25,13.68±0.75 and 13.91±0.80,respectively).The FBG levels in these three groups were obviously lower than that in the ***,there were no dramatic FBG changes in the NCG and DCG(5.77±0.59,14.14±0.72)compared with the initial stage(5.55±0.23,13.93±0.47).The RBP intervention increased insulin-sensitivity index and regulated postprandial blood ***,RBP showed the positive effects on symptoms of type 2 diabetic rats,such as the reduction of weight gain and total cholesterol.

关键词： raw banana powder dietary fiber resistant starch fasting blood glucose diabetic rats

超声振动与切削工艺参数耦合关系的有限元分析

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机械科学与技术 2025年第1期44卷 40-48页

作者：梁桂强姚峰杜冰北京领航科工教育科技有限公司北京100070 重庆科技大学材料与新能源学院重庆401331

针对超声振动切削的振幅、频率与切削速度耦合关系问题,采用领航CuttingSim软件对Ti6Al4V钛合金材料横向(即切削速度方向)振动切削过程进行有限元建模和后处理分析,同时采用ABAQUS软件的explicit求解器进行求解。在不同的工艺参数下,比... 详细信息

针对超声振动切削的振幅、频率与切削速度耦合关系问题,采用领航CuttingSim软件对Ti6Al4V钛合金材料横向(即切削速度方向)振动切削过程进行有限元建模和后处理分析,同时采用ABAQUS软件的explicit求解器进行求解。在不同的工艺参数下,比较了横向振动切削过程的振动效果,并采用单一变量法研究了横向超声振动参数与切削参数耦合作用对速度系数、净切削时间比、切削力与切削温度的影响规律。结果表明:在所设定的振动和工艺参数下,可用刀工分离特性来评价横向超声振动效果,即当速度系数介于0~1且在一定范围内比值越小时净切削时间比也越小,横向超声振动效果越好;超声振动加工会降低切削力和切削温度,但其优势会随切削速度的增大而逐渐减弱直至消失;在所列出的各种工况组合下,振幅40μm、频率30 kHz、切削速度120 m/min的工况下振动效果最佳,平均切削力降低63.75%,平均切削温度降低26.74%。

关键词： ABAQUS 超声振动净切削时间比切削力切削温度

The effects of spectrograph slit modes on the accuracy of stellar radial velocity measurement and atmospheric parameter estimation

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Science China(Physics,Mechanics & Astronomy) 2013年第10期56卷 1833-1839页

作者： WANG FengFei ZHANG HaoTong LUO ALi BAI ZhongRui du bing ZHAO YongHeng National Astronomical Observatories Chinese Academy of Sciences Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences University of Chinese Academy of Sciences

Spectrograph slit is conventionally used to enhance the spectral resolution ~md manage how much light can be allowed to enter spectrograph. The narrow slit provides a higher resolution but sacrifices efficiency of spectrograph and results in a low signal to noise ratio （S/N） spectra product. We take GuoShouJing telescope as an example and carry out a series of experiments to study how its 2/3 slit mode affects the precision of stellar radial velocity measurement and atmosphere parameters estimate. By transforming the resolution and adding a Gaussian White Noise to the extremely high quality spectra from the Sloan Digital Sky Survey, we generate synthetic stellar spectra of various brightness with different S/Ns. Comparing the measurements on these noise added spectra with the original high quality ones, we summarize the influences of the 2/3 slit mode on the meas- urement accuracy of stellar radial velocity and atmospheric parameters.

关键词： slit mode resolution stellar radial velocity atmosphere parameters spectrograph