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Designing ultrastable P2/O3-type layered oxides for sodium ion batteries by regulating Na distribution and oxygen redox chemistry

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Journal of Energy Chemistry 2024年第7期94卷 466-476页

作者： Jieyou Huang Weiliang Li Debin Ye Lin Xu Wenwei wu Xuehang wu School of Chemistry and Chemical Engineering Guangxi UniversityNanning 530004GuangxiChina Guangxi Key Laboratory for High-value Utilization of Manganese Resources Guangxi Normal University for NationalitiesChongzuo 532200GuangxiChina

P2/O3-type Ni/Mn-based layered oxides are promising cathode materials for sodium-ion batteries(SIBs)owing to their high energy ***,exploring effective ways to enhance the synergy between the P2 and 03 phases remains a ***,we design a P2/O3-type Na_(0.76)Ni_(0.31)Zn_(0.07)Mn_(0.50)Ti_(0.12)0_(2)(NNZMT)with high chemical/electrochemical stability by enhancing the coupling between the two *** the first time,a unique Na*extraction is observed from a Na-rich O3 phase by a Na-poor P2 phase and systematically *** process is facilitated by Zn^(2+)/Ti^(4+)dual doping and calcination condition regulation,allowing a higher Na*content in the P2 phase with larger Na^(+)transport channels and enhancing Na transport *** of reduced Na^(+)in the O3 phase,which increases the difficulty of H^(+)/Na^(+) exchange,the hydrostability of the O3 phase in NNZMT is considerably ***,Zn^(2+)/Ti^(4+)presence in NNZMT synergistically regulates oxygen redox chemistry,which effectively suppresses O_(2)/CO_(2) gas release and electrolyte decomposition,and completely inhibits phase transitions above 4.0 *** a result,NNZMT achieves a high discharge capacity of 144.8 mA h g^(-1) with a median voltage of 3.42 V at 20 mA g^(-1) and exhibits excellent cycling performance with a capacity retention of 77.3% for 1000 cycles at 2000 mA g^(-1).This study provides an effective strategy and new insights into the design of high-performance layered-oxide cathode materials with enhanced structure/interface stability forSIBs.

关键词： Sodium-ion batteries P2/O3-type layered oxides Na distribution Oxygen redox chemistry Hydrostability

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Mechanism Design for Ancillary Service Market Considering Social Welfare and Fairness

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1000-1010页

作者： Zhi wu Yuanxi wu Wei Gu Zheng Xu Shu Zheng Jingtao Zhao School of Electrical Engineering Southeast UniversityNanjing 210096China NARI Technology Co. Ltd.Nanjing 211106China IEEE CSEE

Increasing penetration of distributed energy resources in the distribution network(DN)is threatening safe operation of the DN,which necessitates setup of the ancillary service market in the *** the ancillary service market,distribution system operator(DSO)is responsible for safety of the DN by procuring available capacities of *** existing studies,this paper proposes a novel market mechanism composed of two parts:choice rule and payment *** proposed choice rule simultaneously considers social welfare and fairness,encouraging risk-averse aggregators to participate in the ancillary service *** is then formulated as a linear programming problem,and a distributed solution using the multi-cut Benders decomposition is ***,successful implementation of the choice rule depends on each aggregator’s truthful adoption of private ***,a payment rule is also designed,which is proved to possess two properties:incentive compatibility and individual *** results demonstrate effectiveness of the proposed choice rule on improving fairness and verify properties of the payment rule.

关键词： Aggregator ancillary service market distributed mechanism fairness mechanism design

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Imide-pillared covalent organic framework protective films as stable zinc ion-conducting interphases for dendrite-free Zn metal anodes

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Journal of Energy Chemistry 2024年第10期97卷 470-477页

作者： Xiaoman Ye Xuemei Xiao Zhijing wu Xin wu Lin Gu Sheng Liu School of Chemical Engineering and Technology Sun Yat-sen University The Key Lab of Low-Carbon Chemistry & Energy Conservation of Guangdong Province Sun Yat-sen University

The notorious growth of zinc dendrite and the water-induced corrosion of zinc metal anodes（ZMAs）restrict the practical development of aqueous zinc ion batteries（AZIBs）.In this work,a zinc metallized,imide-pillared covalent organic framework（ZPC） protective film has been engineered as a stable Zn2+ion-conducting interphase to modulate interfacial kinetics and suppress side reactions for *** to bare Zn,ZPC@Zn exhibits a higher Zn2+ionic conductivity,a larger Zn2+transference number,a lower electronic conductivity,a smaller desolvation activation energy and correspondingly a significant suppression of corrosion,hydrogen evolution and Zn ***,the ZPC@Zn||ZPC@Zn symmetric cell obtains a cycling lifespan over 3000 h under 5 mA cm-2for 1 mA h *** ZPC@Zn||NH4V4O10coin-type full battery delivers a specific capacity of 195.8 mA h g-1with a retention rate of78.5% at 2 A g-1after 1100 cycles,and the ZPC@Zn||NH4V4O10pouch full cell shows a retention of70.1% in reversible capacity at 3 A g-1after 1100 *** present incorporation of imide-linked covalent organic frameworks in the surface modification of ZMAs will offer fresh perspectives in the search for ideal protective films for the practicality of AZIBs.

关键词： Aqueous zinc ion batteries Covalent organic frameworks Imide linkage Surface modification Zinc metal anodes

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降雪天气对机场基础设施系统韧性恢复的影响

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中国安全科学学报 2024年第4期34卷 175-182页

作者：黄信徐平吴堃中国民航大学交通科学与工程学院天津300300

为量化评估降雪天气对机场基础设施系统韧性影响,将机场基础设施系统分为物理、功能、经济和组织4个一级指标,提出降雪天气对各二级指标的破坏强度系数,建立机场基础设施系统韧性量化分析模型;采用蒙特卡罗方法分析4种不同等级降雪天气... 详细信息

为量化评估降雪天气对机场基础设施系统韧性影响,将机场基础设施系统分为物理、功能、经济和组织4个一级指标,提出降雪天气对各二级指标的破坏强度系数,建立机场基础设施系统韧性量化分析模型;采用蒙特卡罗方法分析4种不同等级降雪天气下机场基础设施系统韧性水平变化特征。结果表明:机场基础设施系统功能受损程度和恢复时间与降雪强度呈正相关;小雪、中雪、大雪和暴雪天气下,系统恢复时间分别为13、14、16和23 h;暴雪天气下机场基础设施系统韧性相对于大、中、小雪下分别降低9.65%、17.01%和20.27%;当破坏强度系数降低20%时,机场基础设施系统的恢复速度从0.053%/h提升至0.061%/h,恢复时间由12 h降低至9 h。

关键词：降雪天气机场基础设施系统韧性一级指标恢复时间

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RecBERT:Semantic recommendation engine with large language model enhanced query segmentation for k-nearest neighbors ranking retrieval

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Intelligent and Converged Networks 2024年第1期5卷 42-52页

作者： Richard wu the Dublin Unified School District and the SF Artificial Intelligence Club DublinCA 94568USA

The increasing amount of user traffic on Internet discussion forums has led to a huge amount of unstructured natural language data in the form of user *** modern recommendation systems rely on manual tagging,relying on administrators to label the features of a class,or story,which a user comment corresponds *** common approach is to use pre-trained word embeddings to compare class descriptions for textual similarity,then use a distance metric such as cosine similarity or Euclidean distance to find top k ***,neither approach is able to fully utilize this user-generated unstructured natural language data,reducing the scope of these recommendation *** paper studies the application of domain adaptation on a transformer for the set of user comments to be indexed,and the use of simple contrastive learning for the sentence transformer fine-tuning process to generate meaningful semantic embeddings for the various user comments that apply to each *** order to match a query containing content from multiple user comments belonging to the same class,the construction of a subquery channel for computing class-level similarity is *** channel uses query segmentation of the aggregate query into subqueries,performing k-nearest neighbors(KNN)search on each individual *** achieves state-of-the-art performance,outperforming other state-of-the-art models in accuracy,precision,recall,and F1 score for classifying comments between four and eight classes,*** outperforms the most precise state-of-the-art model(distilRoBERTa)in precision by 6.97%for matching comments between eight classes.

关键词： sentence transformer simple contrastive learning large language models query segmentation k-nearest neighbors

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Principal components of nuclear mass models

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Science China(Physics,Mechanics & Astronomy) 2024年第7期67卷 65-71页

作者： Xin-Hui wu Pengwei Zhao Department of Physics Fuzhou UniversityFuzhou 350108China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China

Principal component analysis(PCA)is employed to extract the principal components(PCs)present in nuclear mass models for the first *** effects from different nuclear mass models are reintegrated and reorganized in the extracted *** PCs are recombined to build new mass models,which achieve better accuracy than the original theoretical mass *** comparison indicates that using the PCA approach,the effects contained in different mass models can be collaborated to improve nuclear mass predictions.

关键词： nuclear mass principal component analysis nuclear models statistical methods

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OsPRMT6a-mediated arginine methylation of OsJAZ1 regulates jasmonate signaling and spikelet development in rice

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Molecular Plant 2024年第6期17卷 900-919页

作者： kun Dong Fuqing wu Siqi Cheng Shuai Li Feng Zhang Xinxin Xing Xin Jin Sheng Luo Miao Feng Rong Miao Yanqi Chang Shuang Zhang Xiaoman You Peiran Wang Xin Zhang Cailin Lei Yulong Ren Shanshan Zhu Xiuping Guo Chuanyin wu Dong-Lei Yang Qibing Lin Zhijun Cheng Jianmin Wan State Key Laboratory of Crop Gene Resources and Breeding National Key Facility for Crop Gene Resources and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China State Key Laboratory for Crop Genetics and Germplasm Enhancement Nanjing Agricultural UniversityNanjing 210095China

Although both protein arginine methylation(PRMT)and jasmonate(JA)signaling are crucial for regulating plant development,the relationship between these processes in the control of spikelet development remains *** this study,we used the CRISPR/Cas9 technology to generate two OsPRMT6a loss-of-function mutants that exhibit various abnormal spikelet ***,we found that OsPRMT6a can methylate arginine residues in JA signal repressors OsJAZ1 and *** showed that arginine methylation of OsJAZ1 enhances the binding affinity of OsJAZ1 with the JA receptors OsCOI1a and OsCOI1b in the presence of JAs,thereby promoting the ubiquitination of OsJAZ1 by the SCF^(OsCOI1a/OsCOI1b) complex and degradation via the 26S *** process ultimately releases OsMYC2,a core transcriptional regulator in the JA signaling pathway,to activate or repress JA-responsive genes,thereby maintaining normal plant(spikelet)***,in the osprmt6a-1 mutant,reduced arginine methylation of OsJAZ1 impaires the interaction between OsJAZ1 and OsCOI1a/OsCOI1b in the presence of *** a result,OsJAZ1 proteins become more stable,repressing JA responses,thus causing the formation of abnormal spikelet ***,we discovered that JA signaling reduces the OsPRMT6a mRNA level in an OsMYC2-dependent manner,thereby establishing a negative feedback loop to balance JA *** further found that OsPRMT6a-mediated arginine methylation of OsJAZ1 likely serves as a switch to tune JA signaling to maintain normal spikelet development under harsh environmental conditions such as high ***,our study establishes a direct molecular link between arginine methylation and JA signaling in rice.

关键词： protein arginine methylation jasmonate signaling negative feedback loop spikelet development adaptation to heat stress rice

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舌鳞状细胞癌患者非常规淋巴结转移分析

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中华耳鼻咽喉头颈外科杂志 2024年第3期59卷 227-232页

作者：吴坤戴博文吴汉江中南大学湘雅二医院口腔科长沙410011 上海交通大学医学院附属第九人民医院口腔颌面-头颈肿瘤科上海200011

目的分析舌鳞状细胞癌(简称鳞癌)颈部淋巴结转移的特点。方法采用回顾性研究方法,纳入2010年6月至2018年3月间在中南大学湘雅二医院口腔颌面外科就诊,行原发灶及颈淋巴清扫(简称颈清)的连续整块切除手术的舌鳞癌患者329例,其中男性283例... 详细信息

目的分析舌鳞状细胞癌(简称鳞癌)颈部淋巴结转移的特点。方法采用回顾性研究方法,纳入2010年6月至2018年3月间在中南大学湘雅二医院口腔颌面外科就诊,行原发灶及颈淋巴清扫(简称颈清)的连续整块切除手术的舌鳞癌患者329例,其中男性283例,女性46例,年龄26~80岁。均采用新颈清术式:与经典颈清的主要区别在于非常规淋巴结的处理,彻底清扫甲状腺上动脉、面动脉基部、颈外动脉各分支旁淋巴脂肪组织,将舌动脉及其沿线组织及口底淋巴结与原发灶一并切除。计数资料的比较采用χ2检验,多因素分析采用线性回归模型。结果本研究共136例(41.3%)患者发生了颈淋巴结转移。142例T1-2cN0期患者行肩胛舌骨上清扫,其中22例(15.5%)存在隐匿性淋巴结转移,与其余120例无淋巴结转移者相比,5年总生存率差异无统计学意义(90.2%比92.1%,χ2=0.156,P=0.693)。多因素分析显示T分期、临床分期以及非常规淋巴结转移是舌鳞癌患者出现颈部淋巴结转移的影响因素(P值均10 mm组的差异有统计学意义[3.1%(2/64)比5.7%(6/106)比13.8%(22/159),χ2=7.907,P=0.005]。结论 cN0舌鳞癌患者选择肩胛舌骨上清扫可获得可靠的控制效果。建议对所有需颈清的患者行非常规淋巴清扫,强烈推荐对存在常规淋巴结转移的患者进行非常规淋巴清扫。

关键词：舌肿瘤颈淋巴结清扫术淋巴结转移规律非常规淋巴结

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T4分期后颊癌的手术策略：解剖单位切除

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中华耳鼻咽喉头颈外科杂志 2024年第9期59卷 928-933页

作者：吴坤毛元元吴汉江中南大学湘雅二医院口腔科长沙上海交通大学医学院附属第九人民医院口腔颌面-头颈肿瘤外科上海

目的探讨解剖单位切除方式对T4分期后颊癌患者总生存率的影响。方法回顾性分析2014年3月至2019年12月期间于中南大学湘雅二医院口腔颌面外科诊断为T4分期的79例后颊鳞癌病例, 男性74例, 女性5例, 年龄28～72岁, 患者均行颊颌颈联合根治... 详细信息

目的探讨解剖单位切除方式对T4分期后颊癌患者总生存率的影响。方法回顾性分析2014年3月至2019年12月期间于中南大学湘雅二医院口腔颌面外科诊断为T4分期的79例后颊鳞癌病例, 男性74例, 女性5例, 年龄28～72岁, 患者均行颊颌颈联合根治术及股前外侧游离皮瓣修复重建。依据原发灶的处理方式不同进行分组, 对照组(40例)患者接受传统扩大切除(1.5～2.0 cm安全边界);试验组(39例)患者接受解剖单位切除, 即切除肿瘤累及的整个解剖单位或亚单位。收集患者的临床病理资料并行规律随访, 生存率采用Log-rank和Cox比例风险回归模型, 多因素分析采用线性回归模型。结果试验组的5年总生存率(61.53%比27.50%)及原发灶控制率(74.36%比27.50%)高于对照组, 差异均有统计学意义(χ2=6.624, P=0.010;χ2=17.350, P<0.001)。多元线性回归分析发现, 影响原发灶控制率的相关因素有解剖单位切除(t=3.880, P<0.001)和淋巴结转移(t=2.619, P=0.011)。同样, Cox比例风险回归模型分析发现解剖单位切除(Z=2.421, P=0.016)和淋巴结转移(Z=2.793, P=0.005)是影响总生存率的因素。结论对于多解剖区侵犯的后颊癌采用解剖单位切除, 可减少局部复发, 提高患者的总生存率。

关键词：口腔肿瘤颊解剖单位切除 T4分期后颊癌生存率

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Drogue detection for autonomous aerial refueling via hybrid pigeon-inspired optimized color opponent and saliency aggregation

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Chinese Journal of Aeronautics 2024年第5期37卷 27-38页

作者： Tongyan wu Haibin DUAN Yanming FAN State Key Laboratory of Virtual Reality Technology and Systems School of Automation Science and Electrical EngineeringBeihang UniversityBeijing 100083China Virtual Reality Fundamental Research Laboratory Department of Mathematics and TheoriesPeng Cheng LaboratoryShenzhen 518000China AVIC Shenyang Aircraft Design and Research Institute Shenyang 110035China

Drogue detection is one of the challenging tasks in autonomous aerial refueling due to the requirement for accuracy and *** detection based on image intrinsic cues can achieve fast detection,but with poor *** studies reveal that optimization-based methods provide accurate and quick solutions for saliency *** paper presents a hybrid pigeon-inspired optimization method,the optimized color opponent,that aims to adjust the weight of color opponent channels to detect the drogue *** can optimize the weights in the selected aerial refueling scene offline,and the results are applied for drogue detection in the scene.A novel algorithm aggregated by the optimized color opponent and robust background detection is presented to provide better precision and *** results on benchmark datasets and aerial refueling images show that the proposed method successfully extracts the saliency region or drogue and exhibits superior performance against the other saliency detection methods with intrinsic *** algorithm designed in this paper is competent for the drogue detection task of autonomous aerial refueling.

关键词： Autonomous aerial refueling Drones Hybrid pigeon-inspired optimization Color opponent Saliency detection Saliency aggregation

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