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Improve Chinese Aspect Sentiment Quadruplet Prediction via Instruction Learning Based on Large Generate Models

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Computers, Materials & Continua 2024年第3期78卷 3391-3412页

作者： Zhaoliang Wu Yuewei Wu xiaoli Feng Jiajun Zou Fulian yin College of Information and Communication Engineering Communication University of ChinaBeijing100024China The State Key Laboratory of Media Convergence and Communication Communication University of ChinaBeijing100024China Department of Electronic Engineering Tsinghua UniversityBeijing100084China

Aspect-Based Sentiment Analysis(ABSA)is a fundamental area of research in Natural Language Processing(NLP).Within ABSA,Aspect Sentiment Quad Prediction(ASQP)aims to accurately identify sentiment quadruplets in target sentences,including aspect terms,aspect categories,corresponding opinion terms,and sentiment polarity.However,most existing research has focused on English datasets.Consequently,while ASQP has seen significant progress in English,the Chinese ASQP task has remained relatively stagnant.Drawing inspiration from methods applied to English ASQP,we propose Chinese generation templates and employ prompt-based instruction learning to enhance the model’s understanding of the task,ultimately improving ASQP performance in the Chinese context.Ultimately,under the same pre-training model configuration,our approach achieved a 5.79%improvement in the F1 score compared to the previously leading method.Furthermore,when utilizing a larger model with reduced training parameters,the F1 score demonstrated an 8.14%enhancement.Additionally,we suggest a novel evaluation metric based on the characteristics of generative models,better-reflecting model generalization.Experimental results validate the effectiveness of our approach.

关键词： ABSA ASQP LLMs sentiment analysis Chinese comments

Theoretical investigations on the growth of graphene by oxygenassisted chemical vapor deposition

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Nano Research 2024年第6期17卷 4645-4650页

作者： xiaoli Sun Chaojie Yu Yujia Yang Zhihao Li Jianjian Shi Wanjian yin Zhongfan Liu Beijing Graphene Institute(BGI) Beijing 100095China School of Physics and Electronics Shandong Normal UniversityJinan 250014China College of Energy Soochow Institute for Energy and Materials InnovationsLight Industry Institute of Electrochemical Power SourcesSUDA-BGI Collaborative Innovation CenterSoochow UniversitySuzhou 215006China School of Electronic Engineering Chengdu Technological UniversityChengdu 611730China Center for Nanochemistry Beijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Recently,graphene has drawn considerable attention in the field of electronics,owing to its favorable conductivity and high carrier mobility.Crucial to the industrialization of graphene is its high-quality microfabrication via chemical vapor deposition.However,many problems remain in its preparation,such as the not fully understood cracking mechanism of the carbon source,the mechanism of its substrate oxidation,and insufficient defect repair theory.To help close this capability gap,this study leverages density functional theory to explore the role of O in graphene growth.The effects of Cu substrate oxidation on carbon source cracking,nucleation barriers,crystal nucleus growth,and defect repairs are discussed.OCu was found to reduce energy change during dehydrogenation,rendering the process easier.Moreover,the adsorbed O in graphene or its Cu substrate can promote defect repair and edge growth.

关键词： density functional theory oxygen-assisted graphene growth chemical vapor deposition Cu substrate

PPAR-γactivation promotes xenogenic bioroot regeneration by attenuating the xenograft induced-oxidative stress

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International Journal of Oral Science 2023年第1期15卷 159-171页

作者： Tingting Lan Fei Bi Yuchan Xu xiaoli yin Jie Chen Xue Han Weihua Guo National Engineering Laboratory for Oral Regenerative Medicine&Engineering Research Center of Oral Translational Medicine Ministry of Education&State Key Laboratory of Oral Diseases&National Clinical Research Center for Oral Diseases&Department of Pediatric DentistryWest China School of StomatologySichuan UniversityChengduChina School of Medicine Nankai UniversityTianjinChina Department of Pediatric Dentistry Tianjin Stomatological HospitalSchool of MedicineNankai UniversityTianjinChina Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction TianjinChina Yunnan Key Laboratory of Stomatology The Affiliated Hospital of StomatologySchool of StomatologyKunming Medical UniversityKunmingChina

Xenogenic organ transplantation has been considered the most promising strategy in providing possible substitutes with the physiological function of the failing organs as well as solving the problem of insufficient donor sources.However,the xenograft,suffered from immune rejection and ischemia-reperfusion injury(IRI),causes massive reactive oxygen species(ROS)expression and the subsequent cell apoptosis,leading to the xenograft failure.Our previous study found a positive role of PPAR-γ in antiinflammation through its immunomodulation effects,which inspires us to apply PPAR-γ agonist rosiglitazone(RSG)to address survival issue of xenograft with the potential to eliminate the excessive ROS.In this study,xenogenic bioroot was constructed by wrapping the dental follicle cells(DFC)with porcine extracellular matrix(p ECM).The hydrogen peroxide(H_(2)O_(2))-induced DFC was pretreated with RSG to observe its protection on the damaged biological function.Immunoflourescence staining and transmission electron microscope were used to detect the intracellular ROS level.SD rat orthotopic transplantation model and superoxide dismutase 1(SOD1)knockout mice subcutaneous transplantation model were applied to explore the regenerative outcome of the xenograft.It showed that RSG pretreatment significantly reduced the adverse effects of H2O2on DFC with decreased intracellular ROS expression and alleviated mitochondrial damage.In vivo results confirmed RSG administration substantially enhanced the host’s antioxidant capacity with reduced osteoclasts formation and increased periodontal ligament-like tissue regeneration efficiency,maximumly maintaining the xenograft function.We considered that RSG preconditioning could preserve the biological properties of the transplanted stem cells under oxidative stress(OS)microenvironment and promote organ regeneration by attenuating the inflammatory reaction and OS injury.

关键词： oxidative stress eliminate

IRE1α regulates the PTHrP-IHH feedback loop to orchestrate chondrocyte hypertrophy and cartilage mineralization

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Genes & Diseases 2024年第1期11卷 464-478页

作者： Mengtian Fan Nana Geng Xingyue Li Danyang yin Yuyou Yang Rong Jiang Cheng Chen Naibo Feng Li Liang xiaoli Li Fengtao Luo Huabing Qi Qiaoyan Tan Yangli Xie Fengjin Guo Laboratory of Developmental Biology Department of Cell Biology and GeneticsSchool of Basic Medical ScienceChongqing Medical UniversityChongqing 400016China Laboratory of Stem Cells and Tissue Engineering School of Basic Medical ScienceChongqing Medical UniversityChongqing 400016China Department of Orthopedics The 1st Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Wound Repair and Rehabilitation Medicine State Key Laboratory of TraumaBurns and Combined InjuryTrauma CenterResearch Institute of SurgeryDaping HospitalArmy Medical UniversityChongqing 400042China

Cartilage development is controlled by the highly synergistic proliferation and differentiation of growth plate chondrocytes,in which the Indian hedgehog(IHH)and parathyroid hormone-related protein-parathyroid hormone-1 receptor(PTHrP-PTH1R)feedback loop is crucial.The inositol-requiring enzyme 1a/X-box-binding protein-1 spliced(IRE1α/XBP1s)branch of the unfolded protein response(UPR)is essential for normal cartilage development.However,the precise role of ER stress effector IRE1α,encoded by endoplasmic reticulum to nucleus signaling 1(ERN1),in skeletal development remains unknown.Herein,we reported that loss of IRE1α accelerates chondrocyte hypertrophy and promotes endochondral bone growth.ERN1 acts as a negative regulator of chondrocyte proliferation and differentiation in postnatal growth plates.Its deficiency interrupted PTHrP/PTH1R and IHH homeostasis leading to impaired chondrocyte hypertrophy and differentiation.XBP1s,produced by p-IRE1α-mediated splicing,binds and up-regulates PTH1R and IHH,which coordinate cartilage development.Meanwhile,ER stress cannot be activated normally in ERN1-deficient chondrocytes.In conclusion,ERN1 deficiency accelerates chondrocyte hypertrophy and cartilage mineralization by impairing the homeostasis of the IHH and PTHrP/PTH1R feedback loop and ER stress.ERN1 may have a potential role as a new target for cartilage growth and maturation.

关键词： Cartilage development ER stress ERN1 IHH PTHrP/PTH1R

Spontaneous Self-healing Bio-inspired Lubricant-infused Coating on Pipeline Steel Substrate with Reinforcing Anti-corrosion,Anti-fouling,and Anti-scaling Properties

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Journal of Bionic Engineering 2022年第6期19卷 1601-1614页

作者： Hao Li Yujie Peng Kai Zhang Pengchang Li Lei Xin xiaoli yin Sirong Yu School of Material Science and Engineering Shandong University of Science and TechnologyQingdao266590China National Engineering Laboratory of Offshore Geophysical and Exploration Equipment China University of Petroleum(East China)Qingdao266580China College of Mechanical and Electronic Engineering Shandong University of Science and TechnologyQingdao266590China School of Materials Science and Engineering China University of Petroleum(East China)Qingdao266580China

Superhydrophobic surfaces(SHS)and slippery lubricant-infused porous surfaces(SLIPS)attract great attention due to their multiple properties in both industries and our daily lives.Here,we first fabricated the SHS with micro-scale flower-like structures composed of nano-sheets on pipeline steel substrate.Then,we obtained the SLIPS by spin-coating lubricant into gaps of micro-scale flower-like structures,with the air still trapped among gaps of nano-sheets.The SLIPS shows excellent liquid repellency as the SHS.The SLIPS also shows stability after the scour of flowing water.These results of polarization curves(Tafel)and electrochemical impedance spectroscopies deduced the SLIPS with better and more stable anti-corrosion property than the SHS.Compared with the SHS,the lack of attachment and CaCO_(3) on the SLIPS indicates that the SLIPS demonstrates better anti-fouling and anti-scaling properties than the SHS.Moreover,the SLIPS shows promising wear resistance under the abrasion simulated by sandpaper compared with the SHS.Notably,the air trapped among nano-sheets is conducive to the lubricant flowing to the surface quickly,exhibiting spontaneous self-healing in atmosphere,even if part flower-like structures of the SLIPS subject to damage with the lubricant consumed after scratched.

关键词： Pipeline steel Bioinspiration Slippery surface Self-healing

Two-Order Approximate and Large Stepsize Numerical Direction Based on the Quadratic Hypothesis and Fitting Method

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IEEE/CAA Journal of Automatica Sinica 2020年第3期7卷 901-909页

作者： xiaoli yin Chunming Li Yuan Zhang School of Mechanical and Electrical Engineering China University of Petroleum(East China)Qingdao 266580 Shengli College in China University of Petroleum(East China) Dongying 257061China School of Pipeline and Civil Engineering China University of Petroleum(East China)Qingdao 266580

Many effective optimization algorithms require partial derivatives of objective functions, while some optimization problems' objective functions have no derivatives. According to former research studies, some search directions are obtained using the quadratic hypothesis of objective functions. Based on derivatives, quadratic function assumptions, and directional derivatives, the computational formulas of numerical first-order partial derivatives, second-order partial derivatives, and numerical second-order mixed partial derivatives were constructed. Based on the coordinate transformation relation, a set of orthogonal vectors in the fixed coordinate system was established according to the optimization direction. A numerical algorithm was proposed, taking the second order approximation direction as an example. A large stepsize numerical algorithm based on coordinate transformation was proposed. Several algorithms were validated by an unconstrained optimization of the two-dimensional Rosenbrock objective function. The numerical second order approximation direction with the numerical mixed partial derivatives showed good results. Its calculated amount is 0.2843% of that of without second-order mixed partial derivative. In the process of rotating the local coordinate system 360°, because the objective function is more complex than the quadratic function, if the numerical direction derivative is used instead of the analytic partial derivative, the optimization direction varies with a range of 103.05°. Because theoretical error is in the numerical negative gradient direction, the calculation with the coordinate transformation is 94.71% less than the calculation without coordinate transformation. If there is no theoretical error in the numerical negative gradient direction or in the large-stepsize numerical optimization algorithm based on the coordinate transformation, the sawtooth phenomenon occurs. When each numerical mixed partial derivative takes more than one point, the optimization results cannot be improved. The n

关键词： Directional derivative numerical differential optimization method quadratic function hypothesis

金属卤化物CH_(3)NH_(3)PbBr_(3)钙钛矿量子点快速检测新烟碱类农药

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发光学报 2024年第4期45卷 688-698页

作者：周然锋彭茂民刘丽尹小丽彭西甜夏虹湖北省农业科学院农业质量标准与检测技术研究所农产品营养品质与安全湖北省重点实验室湖北武汉430064 长江大学生命科学学院湖北荆州434023

以新烟碱类农药为靶标物,结合荧光传感策略构建了基于金属卤化物钙钛矿量子点CH_(3)NH_(3)PbBr_(3)(Perovskite quantum dots,PQDs)荧光探针快速检测新烟碱类农药的新方法。该方法的线性检测范围为0.0~20 mg/L,相关系数为0.9939,检出限... 详细信息

以新烟碱类农药为靶标物,结合荧光传感策略构建了基于金属卤化物钙钛矿量子点CH_(3)NH_(3)PbBr_(3)(Perovskite quantum dots,PQDs)荧光探针快速检测新烟碱类农药的新方法。该方法的线性检测范围为0.0~20 mg/L,相关系数为0.9939,检出限和定量限分别为0.17 mg/kg和0.56 mg/kg。对萝卜和香蕉样品中噻虫胺的加标回收率在79.3%~115.4%之间,日内日间相对标准偏差在3.8%~9.4%之间。该方法具有高灵敏度、高选择性和适用性,为农产品中新烟碱类农药残留的风险防控提供了一种有效的检测技术。对噻虫胺与钙钛矿量子点之间的相互作用进行了研究,结果表明,钙钛矿量子点与噻虫胺之间的相互作用是一个动态过程,噻虫胺对钙钛矿量子点的荧光猝灭方式为通过氢键或范德华力形成了新的复合物的静态猝灭。其内容可作为其他光谱分析手段的技术基础,其分析检测结果可为果蔬安全监管提供有价值的建议。

关键词：金属卤化物钙钛矿量子点快速检测新烟碱类农药

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氨基酸基氮掺杂荧光碳点的制备及饮料中Hg^(2+)的检测

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中国食品学报 2024年第4期24卷 336-348页

作者：彭芷芯付文静谷惠文严秀芳尹小丽长江大学生命科学学院湖北荆州434025 长江大学化学与环境工程学院湖北荆州434023 贵州大学烟草学院贵阳550025

汞离子是一种高毒性的重金属污染物,人体摄入后会带来健康危害,因此控制食品中的汞离子含量非常重要。以柠檬酸为碳源,不同的氨基酸为氮源掺杂,采用一步水热法制备高性能荧光的碳点(CDs),探究不同氨基酸基氮掺杂对碳点荧光量子产率(QY)... 详细信息

汞离子是一种高毒性的重金属污染物,人体摄入后会带来健康危害,因此控制食品中的汞离子含量非常重要。以柠檬酸为碳源,不同的氨基酸为氮源掺杂,采用一步水热法制备高性能荧光的碳点(CDs),探究不同氨基酸基氮掺杂对碳点荧光量子产率(QY)的影响,以及这些氨基酸基氮掺杂碳点对汞离子的响应。结果显示,不同氨基酸的碳链长度和官能团对CDs的QY有一定的影响。Hg^(2+)能高效猝灭以甘氨酸(Gly)为氮源掺杂的Gly-CDs的荧光,Gly-CDs具有良好的荧光稳定性,在优化的试验条件下,用于Hg^(2+)检测的线性范围为0.00~7.00μmol/L和8.00~60.00μmol/L,检出限为0.20μmol/L。据此构建的荧光探针用于检测实际饮料样品中的Hg^(2+),回收率在90.08%~107.90%。该方法简便、快速、灵敏、适用于饮料中Hg^(2+)的测定。

关键词：甘氨酸-CDs 荧光 Hg^(2+)

纳米棒状MgO固相萃取结合高效液相色谱荧光法测定食用油中的苯并[a]芘

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分析科学学报 2024年第2期40卷 139-146页

作者：周然锋程刚刘丽尹小丽彭西甜长江大学生命科学学院湖北荆州434023 鄂州市农产品质量安全检验检测所湖北鄂州436099 湖北省农业科学院农业质量标准与检测技术研究所农产品营养品质与安全湖北省重点实验室湖北武汉430064

采用直接沉淀法合成了一种纳米棒状Mg O吸附剂,结合固相萃取-高效液相色谱荧光检测(SPE-HPLC/FLD)建立了食用油中苯并[a]芘(Ba P)的快速分析方法。采用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)、比表面积和孔径... 详细信息

采用直接沉淀法合成了一种纳米棒状Mg O吸附剂,结合固相萃取-高效液相色谱荧光检测(SPE-HPLC/FLD)建立了食用油中苯并[a]芘(Ba P)的快速分析方法。采用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)、比表面积和孔径分析仪(BET)对合成的棒状Mg O进行了表征,结果表明Mg O纳米材料是多晶立方结构,呈棒状形貌,具有较大的比表面积,非常适合作为SPE的吸附剂。对SPE过程中吸附剂用量、清洗液种类、解吸液种类及用量、上样液体积进行了详细的优化。在优化的条件下,食用油中Ba P在0.5~20.0μg/kg浓度范围内,线性方程回归系数的平方(R^(2))为0.9999,以信噪比的3倍和10倍计算方法检出限和定量限分别为0.10μg/kg和0.33μg/kg。同时,Ba P在低、中、高3种加标浓度下回收率在85.3%~96.5%,日内日间相对标准偏差范围在2.3%~9.0%,表明本方法具有很好的准确度和精密度。最后,将该方法应用于8种实际油样中Ba P的分析,所有样品的回收率在77.8%~92.5%之间,相对标准偏差小于9.8%,表明该方法具有很好的适用性,在实际样品分析中具有很好的应用前景。

关键词：棒状纳米MgO 固相萃取液相色谱-荧光检测苯并[a]芘食用油