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Dual modification of LiNi0.83Co0.11Mn0.06O2 cathode materials by K+ doping and Li3PO4 coating for lithium ions batteries

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Rare Metals 2024年第7期43卷 3007-3018页

作者： Wei Xiao jia-le Wang Zhi-Cheng Yi Cheng-Jin Liu Chang Miao Yu Xin Shu-Qing Nie College of Chemistry and Environmental Engineering Yangtze University

Li3PO4@Li0.99K0.01Ni0.83Co0.11MnO.06O2（NCM-KP） cathode powders are synthesized via K+doping in calcination processes and H3PO4coating in sol-gel processes.K+precisely enters into the lattice to widen the（003） plane to 0.4746 nm with a lower cationic disordered degree of 1.87%.Moreover,the surface residual lithium salts are treated by H3PO4to generate a uniform Li3PO4coating layer of approximately 11.41 nm,which completely covers on the surface of secondary spherical particles to improve the interfacial *** 25℃,the NCM-KP electrode delivers a discharge specific capacity of 148.9 mAh·g-1with a remarkable capacity retention ratio of 84.1% after 200 cycles at 1.0C and retains a high reversible specific capacity of 154.4 mAh·g-1at *** at 1.0C and 60℃,it can maintain a reversible discharge specific capacity of 114.6 mAh·g-1with 0.21% of capacity decay per cycle after 200 cycles,which is significantly lower than 0.40% for the pristine NCM ***,the charge transfer resistance of 238.89 Ω for the NCM-KP electrode is significantly lower than 947.41 Ω for the pristine NCM one by restricting the interfacial side ***,combining K+doping and Li3PO4coating is an effective strategy to enable the significant improvement of the electrochemical property of high-nickel cathode materials,which may be mainly attributed to the widened diffusion pathway and the formed Li3PO4protective layer,thus promoting Li+diffusion rate and preventing the erosion of HF.

关键词： High-nickel cathode material Residual lithium K + doping Li 3 PO 4 coating Lithium ions battery

Clinical study of neutrophil-to-lymphocyte ratio and platelet-tolymphocyte ratio in hypertriglyceridemia-induced acute pancreatitis and acute biliary pancreatitis with persistent organ failure

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1647-1659页

作者： Mu-Sen Xu jia-le Xu Xin Gao Shao-jian Mo jia-Yu Xing jia-Hang Liu Yan-Zhang Tian Xi-Feng Fu The Third Hospital of Shanxi Medical University Shanxi Bethune HospitalShanxi Academy of Medical SciencesTongji Shanxi HospitalTaiyuan 030032Shanxi ProvinceChina Department of Environmental Health School of Public HealthShanxi Medical UniversityTaiyuan 030032Shanxi ProvinceChina

BACKGROUND The neutrophil-to-lymphocyte ratio(NLR)and platelet-to-lymphocyte ratio(PLR)are novel inflammatory indicators that can be used to predict the severity and prognosis of various *** categorize acute pancreatitis by etiology into acute biliary pancreatitis(ABP)and hypertriglyceridemia-induced acute pancreatitis(HTGP).AIM To investigate the clinical significance of NLR and PLR in assessing persistent organ failure(POF)in HTGP and *** A total of 1450 patients diagnosed with acute pancreatitis(AP)for the first time at Shanxi Bethune Hospital between January 2012 and January 2023 were *** patients were categorized into two groups according to the etiology of AP:ABP in 530 patients and HTGP in 241 *** collected and compared the clinical data of the patients,including NLR,PLR,and AP prognostic scoring systems,within 48 h of hospital *** The NLR(9.1 vs 6.9,Plevated in patients with severe AP,modified computed tomography severity index score≥4,Japanese Severity Score≥3,and modified Marshall score≥***,NLR and PLR showed predictive value for the development of POF in both the ABP and HTGP *** NLR and PLR vary between ABP and HTGP,are strongly associated with AP prognostic scoring systems,and have predictive potential for the occurrence of POF in both ABP and HTGP.

关键词： Acute pancreatitis Gallstone Hypertriglyceridemia Neutrophil-to-lymphocyte ratio Platelet-to-lymphocyte ratio Persistent organ failure

Energy band modulation of N-doped rutile/anatase TiO2 photoanode promoting charge separation toward prominent photoelectrochemical performance

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Rare Metals 2024年第8期43卷 3784-3797页

作者： Juan Gao Shi-Xuan Wang jia-le Deng Ping-Ping Wei Fu-Zhang Chen Ling-Cheng Zheng Yue-Qin Wang Yang Li Yin Liu Gang He School of Mechanics and Photoelectric Physics Anhui University of Science and Technology School of Materials Science and Engineering Anhui University Tianneng Battery (Wuhu) Co. Ltd. School of Materials Science and Engineering Anhui University of Science and Technology

To solve the problem of high photogenerated carrier recombination rate and low photoelectric conversion efficiency of TiO2-based materials,a simple N-doped anatase/rutile TiO2heterophase nanorod film was designed by a low-temperature hydrothermal method in this *** enhanced separation and transport of photogenerated charges were facilitated by the smaller contact barrier and appropriate band matching between anatase TiO2nanoparticles and rutile *** introduction of N doping in anatase TiO2resulted in an upward shift of the valence band and a narrowing of the band gap,consequently enhancing the efficiency of visible light *** combination of the heterophase junction and N-doping exhibited a synergistic effect,effectively suppressing the recombination of photogenerated charges and enhancing the photoelectric conversion efficiency of the *** AM 1.5G irradiation,the photocurrent density（J） of the A-TO（N）@R-TONR photoanode reached2.19 mA·cm-2(VRHE,1.23 eV).Additionally,the incident photon-electron conversion efficiency（IPCE） and the charge injection efficiency（η） reached 81.4% and 51.6% at320 ***,the J,IPCE,and η values of the A-TO（N）@R-TONR photoanode were 2.96,2.1 and 3.2times those of pure R-TONR photoanode,*** work presents a rational strategy for designing efficient TiO2-based photoanodes.

关键词： TiO 2 Heterophase junction Photoanode

间接驱动相关条件下的大空间尺度对流受激拉曼侧向散射

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物理学报 2024年第10期73卷 256-269页

作者：曾嘉乐练昌旺季雨闫锐中国科学技术大学近代力学系合肥230026 上海交通大学IFSA协同创新中心上海200240

利用基于光线追踪和对流放大模型的模拟程序PHANTAM,对神光Ⅲ原型装置间接驱动相关条件下的大空间尺度受激拉曼散射进行了研究.模拟结果表明,在该参数条件下,真空腔和充气腔中均会发生较强的对流受激拉曼侧向散射过程.入射光的焦斑大小... 详细信息

利用基于光线追踪和对流放大模型的模拟程序PHANTAM,对神光Ⅲ原型装置间接驱动相关条件下的大空间尺度受激拉曼散射进行了研究.模拟结果表明,在该参数条件下,真空腔和充气腔中均会发生较强的对流受激拉曼侧向散射过程.入射光的焦斑大小是影响对流受激拉曼侧向散射的关键因素:在光强保持不变的条件下,真空腔和充气腔中受激拉曼侧向散射的对流增益会随焦斑增大而增大,而在功率保持不变的条件下,会随焦斑增大而减小.因此改变焦斑尺寸是调控受激拉曼侧向散射对流增益的有效途径.

关键词：激光等离子体不稳定性受激拉曼侧向散射对流模光线追踪

Integrated gut microbiota,plasma metabolomics and network pharmacology to reveal the anti-ischemic stroke effect of cooked rhubarb

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Traditional Medicine Research 2024年第9期9卷 1-13页

作者： Ting Li Lan-Fang Tan Lin Shen Jie-Hui Kuang Si-Kai Zhan Bang Liu jia-le Cai Sheng-Wang Liang Ming-Hua Xian Shu-Mei Wang School of Chinese Materia Medica Guangdong Pharmaceutical UniversityGuangzhou 510006China Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM School of Chinese Materia MedicaGuangdong Pharmaceutical UniversityGuangzhou 510006China Engineering&Technology Research Center for Chinese Materia Medica Quality of the Universities of Guangdong Province School of Chinese Materia MedicaGuangdong Pharmaceutical UniversityGuangzhou 510006China Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization Guangxi Institute of BotanyChinese Academy of SciencesGuilin 541006China Traditional Chinese Medicine Resource Germplasm Bank Management Center Yunfu 527300China

Background:Cooked rhubarb(CR)is obtained by steaming raw rhubarb(Rheum palmatum L.,Rheum officinale Baill.,or Rheum tanguticum *** Balf.)with millet *** is used as a traditional Chinese medicine for treating cerebral stroke,where patients often face severe *** study explored the pharmacological effects and mechanisms of CR against ischemic stroke(IS)in *** used integrated analysis of gut microbiota,metabolomics,and network ***:The compounds in CR were identified using LC-MS/*** impact of CR on rat middle cerebral artery occlusion/reperfusion(MCAO/R)-induced cerebral infarct size and brain tissue pathology was assessed through 2,3,5-triphenyl tetrazolium chloride and HE *** in hemorheology were measured by evaluating blood viscosity,and serum levels of pro-inflammatory cytokine were also *** microbiota composition was analyzed through 16S rRNA gene *** metabolites were examined using untargeted metabolomics and Spearman correlation *** pseudo-germ-free test was used to determine whether tumour necrosis factor-α(TNF-α)and interleukin-1β(IL-1β)improvement in IS are dependent on gut ***:In vivo studies showed CR enhances neurobehavioral function in MCAO/R rats and reduces cerebral infarction *** also ameliorates brain and intestinal barrier damage caused by *** also decreased inflammation and oxidative stress in IS ***,CR promotes the growth of Akkermansia and Verrucomicrobia,aiding in intestinal barrier ***,CR primarily influences the primary bile acid biosynthesis *** pseudo-germ-free experiment and network pharmacology confirmed TNF-αand IL-1βas potential *** relies on gut microbiota for its anti-inflammatory effects to improve ***:Cooked rhubarb offers neuroprotective benefits by enhancing beneficial bacteria abundance and regulating bile acid *** emerges as a potential therapeutic agent for

关键词： cooked rhubarb ischemic stroke gut microbiota metabolomics

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玻璃纤维板阵列增多层吸波复合结构

Journal of Central South University 2024年第2期31卷 384-398页

作者：麻晢乂培黎嘉乐姜超 Powder Metallurgy Research Institute Central South UniversityChangsha 410083China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

本文将电路模拟吸波阵列与玻璃纤维介质板(FEPL)阵列结合,采用真空热压成型工艺制备了一种具有超宽带强吸波性能的多层复合结构。整个FEPL阵列复合结构的表面密度约为2.4 kg/m^(2),厚度约为10.0 mm。仿真和测量结果均表明,FEPL阵列可以... 详细信息

本文将电路模拟吸波阵列与玻璃纤维介质板(FEPL)阵列结合,采用真空热压成型工艺制备了一种具有超宽带强吸波性能的多层复合结构。整个FEPL阵列复合结构的表面密度约为2.4 kg/m^(2),厚度约为10.0 mm。仿真和测量结果均表明,FEPL阵列可以明显改善吸波结构的斜入射角的稳定性,提高电磁吸收率,拓宽吸收带宽。在斜入射角40°~60°范围内,FEPL阵列显著提高了吸波复合结构的吸收性能,同时将相对带宽(FBW)拓宽了约9.1%;此外,它还将复合吸波结构正入射角的平均反射系数从−14.4 dB降低到了−25.7 dB,降低了约11.3 dB。本文所提出的玻璃纤维板阵列增多层吸波复合结构性能优异,制备工艺简单,适合实际工程应用。

关键词：超宽带微波吸收复合材料玻璃纤维板阵列电路模拟吸波体

弹簧地基上大直径单桩海上风机的一阶自振频率

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计算力学学报 2024年第2期41卷 383-389页

作者：余云燕许蓉孔嘉乐兰州交通大学土木工程学院兰州730070

自振频率是海上风机前期动力设计的主要难点之一,计算精度要求极高,而桩-土相互作用对自振频率影响显著。目前,针对桩-土相互作用普遍采用弹簧地基简化模型,为对比分析不同弹簧地基简化模型的准确性和精度,本文采用回传射线矩阵法,建立... 详细信息

自振频率是海上风机前期动力设计的主要难点之一,计算精度要求极高,而桩-土相互作用对自振频率影响显著。目前,针对桩-土相互作用普遍采用弹簧地基简化模型,为对比分析不同弹簧地基简化模型的准确性和精度,本文采用回传射线矩阵法,建立固定端、单弹簧、双弹簧和三弹簧这4种地基简化模型,基于Bernoulli-Euler梁理论和Timoshenko梁理论,求解风机系统的自振频率,并与风机基频实测值作对比,进一步分析三弹簧简化地基模型中地基旋转刚度、地基耦合刚度和地基水平刚度对风机系统基频的影响。研究结果表明,桩-土相互作用不可忽略,三弹簧地基简化模型计算风机系统基频精度最高;地基刚度对风机系统基频的敏感性次序为,地基耦合刚度>地基旋转刚度>地基水平刚度;当地基旋转(水平)刚度较小时,地基耦合刚度与地基旋转(水平)刚度的耦合效应对风机系统的基频影响较大;地基耦合刚度与地基旋转刚度的耦合效应对风机系统基频的影响程度大于地基耦合刚度与地基水平刚度的耦合效应。

关键词：海上风机弹簧地基自振频率回传射线矩阵法单桩基础

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企业ESG评级对债券信用利差的影响——基于发债企业和债券投资者双方的视角

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金融论坛 2024年第3期29卷 24-34页

作者：张金清顾嘉乐张乐平复旦大学经济学院上海200433

本文首先构建纳入企业ESG评级的信用利差确定模型,区分ESG评级影响债券融资成本的企业基本面渠道和投资者渠道,然后使用2009-2022年A股上市公司发行的债券数据进行实证检验。研究发现,ESG评级提高通过企业基本面渠道和投资者渠道共同降... 详细信息

本文首先构建纳入企业ESG评级的信用利差确定模型,区分ESG评级影响债券融资成本的企业基本面渠道和投资者渠道,然后使用2009-2022年A股上市公司发行的债券数据进行实证检验。研究发现,ESG评级提高通过企业基本面渠道和投资者渠道共同降低债券信用利差,且后者的作用更强。机制检验表明,企业基本面渠道体现为降低财务风险,投资者渠道体现为吸引具有ESG偏好的投资者。异质性分析表明,企业基本面渠道在经济欠发达和安全事故高发地区效果更强,投资者渠道对非国有企业、非高碳企业更加明显。

关键词： ESG评级信用利差融资成本预期信用损失超额风险溢价

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基于XGBoost算法的鱼粉中微塑料的红外光谱识别研究

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光谱学与光谱分析 2024年第7期44卷 1835-1842页

作者：许晓栋张慧敏刘佳乐韩鲁佳杨增玲刘贤中国农业大学工学院农业工程系北京100083

作为四大新兴污染物之一的“微塑料”带来的危害日益凸显,微塑料的检测识别是其污染评估和风险管理防控的关键。以鱼粉饲料中的微塑料(包括PA、PE、PET、PP、PS、PVC)作为研究对象,运用XGBoost算法分别研究构建了近红外光谱和红外光谱... 详细信息

作为四大新兴污染物之一的“微塑料”带来的危害日益凸显,微塑料的检测识别是其污染评估和风险管理防控的关键。以鱼粉饲料中的微塑料(包括PA、PE、PET、PP、PS、PVC)作为研究对象,运用XGBoost算法分别研究构建了近红外光谱和红外光谱定性识别模型。采用GridSearchCV工具包研究优化XGBoost模型的主要超参数,近红外光谱模型的超参数优化结果为n_estimators:300,learning_rate:0.08,gamma:0,max_depth:4,min_child_weight:1;红外光谱的超参数优化结果为n_estimators:100,learning_rate:0.02,gamma:0.20,max_depth:4,min_child_weight:1。基于优化后的超参数构建的近红外定性识别模型平均精确率(Precision)为0.985,平均召回率(Recall)为0.977,平均F1值(F1 score)为0.978,相比于优化前模型效果分别提升了40.17%,51.00%,50.00%;红外定性识别模型平均精确率(Precision)、平均召回率(Recall)和平均F1值(F1 score)均为1.000,优化后的模型效果分别提升了20.67%,27.50%,26.33%。进一步与PLS-DA模型对比分析发现,红外光谱的XGBoost模型与PLS-DA模型效果基本一致,近红外光谱的XGBoost模型各参数(Accuracy,Precision,Recall,F1 score)效果均不同程度地优于PLS-DA模型。综上所述,运用XGBoost算法可以有效识别鱼粉中不同种类的微塑料,该研究为鱼粉饲料中微塑料的快速检测识别方法提供理论支持和技术支撑。

关键词：微塑料红外光谱 XGBoost PLS-DA

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