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Positive effects of biochar application and Rhizophagus irregularis inoculation on mycorrhizal colonization,rice seedlings and phosphorus cycling in paddy soils

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Pedosphere 2024年第2期34卷 361-373页

作者： Yixuan CHEN Zhonghua WEN Jun MENG Zunqi liu Jialong WEI xiyu liu Ziyi GE Wanning DAI Li LIN Wenfu CHEN National Biochar Institute Shenyang Agricultural UniversityShenyang 110866China Key Laboratory of Biochar and Soil Improvement Ministry of Agriculture and Rural AffairsShenyang 110866China

Phosphorus(P)is an essential element for plant growth but is often limiting in ecosystems;therefore,improving the P fertilizer use efficiency is *** and arbuscular mycorrhizal fungi(AMF)may enhance P cycling in paddy soils that contain high content of total P but low content of available P(AP).In this study,the effects of biochar addition and Rhizophagus irregularis inoculation on the organic and inorganic P contents and phosphatase activities in paddy soils,rice seedling growth,and AMF colonization were *** with no biochar addition,biochar addition enhanced the percentage of spore germination at day 7,hyphal length,most probable number,and mycorrhizal colonization rate of *** by 32%,662%,70%,and 28%on average,*** and *** altered soil P cycling and *** and ***,either individually or in combination,increased soil AP content by 2%–48%.Rice seedlings treated with biochar and *** produced greater biomass,improved root morphology,and increased nutrient uptake compared with those of the control without biochar and *** results suggest that combined application of biochar and *** is beneficial to rice cultivation in paddy soils with high content of total P but low content of AP.

关键词： arbuscular mycorrhizal fungi available P phosphorus fraction rice husk biochar seedling growth spore germination

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低真空管道磁浮列车交会激波流场特性分析

中南大学学报（自然科学版） 2024年第5期55卷 1793-1805页

作者：黄尊地伊严严常宁梁习锋周镇斌刘夕语五邑大学轨道交通学院广东江门529020 中南大学交通运输工程学院湖南长沙410075 中南大学轨道交通安全教育部重点实验室湖南长沙410075

为了解决管道列车高速运行时产生的激波等气动效应问题,通过建立三维仿真模型,针对不同阻塞比、线间距和列车外形,基于DES湍流模型,开展非稳态数值模拟研究,分析列车在低真空管道内交会时的激波流场结构、管道壁面压力、列车表面压力。... 详细信息

为了解决管道列车高速运行时产生的激波等气动效应问题,通过建立三维仿真模型,针对不同阻塞比、线间距和列车外形,基于DES湍流模型,开展非稳态数值模拟研究,分析列车在低真空管道内交会时的激波流场结构、管道壁面压力、列车表面压力。研究结果表明:随阻塞比的增大,列车前端壅塞长度增加,且正压区域压力增大,激波反射更加剧烈,尾流激波反射强度增大,激波串长度加长;阻塞比增大有助于增大激波和膨胀波的入射角,从而增大激波和膨胀波的反射次数。随线间距的增大,管道内压力波动幅度相对增大,但改变线间距对管道内激波流场结构、管道壁面压力、列车表面压力的影响不大。列车头部压力和尾部激波强度与流线型长度存在一定的关系,随着列车流线型长度的增加,列车前端壅塞长度缩短,车头前端高压区壅塞强度和车尾末端尾流区域激波反射强度均减小。

关键词：低真空管道列车交会阻塞比线间距列车外形

Matrix expression of Shapley values and its application to distributed resource allocation

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Science China(Information Sciences) 2019年第2期62卷 46-56页

作者： Yuanhua WANG Daizhan CHENG xiyu liu School of Management Science and Engineering Shandong Normal University Academy of Mathematics and Systems Science Chinese Academy of Sciences

The symmetric and weighted Shapley values for cooperative n-person games are studied. Using the semi-tensor product of matrices, it is first shown that a characteristic function can be expressed as a pseudo-Boolean function. Then, two simple matrix formulas are obtained for calculating the symmetric and weighted Shapley values. Finally, using these new formulas, a design technique for the agents’ payoff functions in distributed resource allocation problems is proposed. It is possible to design payoff functions with the weighted Shapley value by the nonsymmetric weights defined on the players, thus ensuring that the optimal allocation is a pure Nash equilibrium. Practical examples are presented to illustrate the theoretical results.

关键词： semi-tensor product of matrices Shapley value matrix formula distributed resource allocation

Tissue P Systems with Cooperating Rules

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Chinese Journal of Electronics 2018年第2期27卷 324-333页

作者： liu xiyu ZHAO Yuzhen SUN Wenxing Shandong Normal University

Tissue P systems are a class of distributed and parallel computing models which are inspired from tissues. The concept of cooperation, which comes from grammar systems, is introduced into tissue P systems, by which rules in each cell are divided into several components. In each computational step, only one component of the whole tissue P system is active, and only rules belonging to this active component can be executed. Both the choice of active component and the switching between active components have several cooperating modes. The computational power of such tissue P system is proved working in several modes.

关键词： Membrane computing Tissue P system Cooperating rule Computational power

An Incremental Model Transfer Method for Complex Process Fault Diagnosis

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IEEE/CAA Journal of Automatica Sinica 2019年第5期6卷 1268-1280页

作者： Xiaogang Wang xiyu liu Yu Li College of Information Science and Engineering Northeastern University

Fault diagnosis is an important measure to ensure the safety of production, and all kinds of fault diagnosis methods are of importance in actual production process. However, the complexity and uncertainty of production process often lead to the changes of data distribution and the emergence of new fault classes, and the number of the new fault classes is unpredictable. The reconstruction of the fault diagnosis model and the identification of new fault classes have become core issues under the circumstances. This paper presents a fault diagnosis method based on model transfer learning and the main contributions of the paper are as follows: 1) An incremental model transfer fault diagnosis method is proposed to reconstruct the new process diagnosis model. 2) Breaking the limit of existing method that the new process can only have one more class of faults than the old process, this method can identify M faults more in the new process with the thought of incremental learning. 3) The method offers a solution to a series of problems caused by the increase of fault classes. Experiments based on Tennessee-Eastman process and ore grinding classification process demonstrate the effectiveness and the feasibility of the method.

关键词： Complex process fault diagnosis incremental learning model transfer

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基于动态膜神经网络的高校网络舆情预测研究

情报探索 2024年第3期 30-38页

作者：徐蓓蓓刘希玉孙琦齐鲁工业大学(山东省科学院) 山东济南250014 山东省科学院情报研究所山东济南250014 山东师范大学商学院管理科学研究院山东济南250014 上海交通大学安泰经济与管理学院上海200030

[目的/意义]高校网络舆情预测在高校应急管理中占据着重要的地位,正确的预测分析能够为舆情的引导和管理提供基础,对增强高校网络舆情应对能力、维护高校和谐稳定有着重要的作用和意义。[方法/过程]应用细胞型P系统的结构和操作,以及膜... 详细信息

[目的/意义]高校网络舆情预测在高校应急管理中占据着重要的地位,正确的预测分析能够为舆情的引导和管理提供基础,对增强高校网络舆情应对能力、维护高校和谐稳定有着重要的作用和意义。[方法/过程]应用细胞型P系统的结构和操作,以及膜算法的规则,结合遗传算法设计动态算子,优化LSTM神经网络,得到基于动态膜驱动的长短期记忆神经网络预测模型(DM-LSTM),开展高校网络舆情预测研究。[结果/结论]提出一种基于动态膜驱动的长短期记忆神经网络预测模型(DM-LSTM),通过实证研究和对比分析,证明所提出的DM-LSTM模型在预测精度和算法性能方面具有更好的优越性和稳定性。

关键词： LSTM 高校网络舆情膜算法预测研究

Coal-based transformation of cities in Shandong Province,China

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Chinese Journal of Population,Resources and Environment 2015年第4期13卷 358-364页

作者： Zheng Xiang xiyu liu College of Management Science and Engineering Shandong Normal University

This article primarily discusses the issue of realizing sustainable development in Shandong Province,China through *** compares the global energy structure to China's,as well as among regions and provinces within *** article takes six cities in Shandong Province as typical objectives,and then using principal component analysis it calculates their flexibility in regard to city shift and *** main purpose was to quantify the impact of economic activities triggered by the coal industry,a.k.a the energy economic nexus,and to assess the flexibility and sustainability in transformation among the observed coal-based cities.

关键词： coal transformation principal component analysis sustainability

Ferromagnetism and insulating behavior with a logarithmic temperature dependence of resistivity in Pb_(10-x)Cux(PO_(4))_(6)O

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Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 106-111页

作者： Yuhang Zhang Cong liu xiyu Zhu Hai-Hu Wen Center for Superconducting Physics and Materials National Laboratory of Solid State Microstructures and Department of PhysicsNational Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China

Recent claim of discovering above-room-temperature superconductivity(Tc≈400 K)at ambient pressure in copper doped apatite Pb10(PO_(4))_(6)O has stimulated world-wide enthusiasm and impulse of motion.A lot of follow-up works have been carried out with controversial *** check whether superconductivity is really present or absent in the material,we need samples which should have a rather pure phase of Pb_(10-x)Cux(PO_(4))_(6)*** we report the characterization results from the Pb_(10-x)Cux(PO_(4))_(6)O with a fraction of about 97 wt.%inferred from the fitting to the X-ray diffraction pattern,if assuming Cu2S as the only *** resistivity measurements show that it is a semiconductor characterized roughly by a ln(1/T)temperature dependence in wide temperature region without trace of *** measurements show that it has a general ferromagnetic signal with a weak superparamagnetic *** grains of the sample show clear interactions with a Nb Fe B *** detected Cu concentration is much lower than the expected nominal *** results show the absence of metallicity and superconductivity in Pb_(10-x)Cux(PO_(4))_(6)O at ambient pressure,and suggest the presence of strong correlation effect.

关键词： superconductivity Pb10(PO4)6O ferromagnetic correlation effect

和坤汤对去卵巢大鼠阴道子宫形态学及肝肾功能的影响

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上海中医药大学学报 2024年第3期38卷 57-65页

作者：吴盼晴丛超刘希昱陈思儒徐莲薇上海中医药大学附属龙华医院上海中医药大学龙华临床医学院上海200032

目的:探讨中药复方和坤汤对去卵巢大鼠阴道、子宫形态学的影响,并观察该方的肝、肾毒性。方法:将40只雌性SD大鼠随机分为4组:对照组、模型组、雌二醇(E_(2))组、和坤汤组,每组10只。除对照组外,其余大鼠采用去势手术构建围绝经期模型。... 详细信息

目的:探讨中药复方和坤汤对去卵巢大鼠阴道、子宫形态学的影响,并观察该方的肝、肾毒性。方法:将40只雌性SD大鼠随机分为4组:对照组、模型组、雌二醇(E_(2))组、和坤汤组,每组10只。除对照组外,其余大鼠采用去势手术构建围绝经期模型。术后第10天,对照组和模型组大鼠每天给予0.9%NaCl溶液灌胃,E_(2)组每天给予0.15 mg/kg E_(2)溶液灌胃,和坤汤组每天给予19.95 g/kg和坤汤颗粒剂混悬液灌胃,连续3个月。干预结束后处死大鼠,摘取阴道、子宫、肝脏、肾脏,计算脏器指数;苏木素-伊红(HE)染色观察各组大鼠的阴道、子宫、肝脏、肾脏形态学变化,并测量大鼠的阴道上皮厚度、上皮层数、固有层血管数量及子宫上皮厚度、内膜厚度、内膜腺腺体上皮高度和内膜腺个数;采用免疫组化方法检测大鼠阴道雌激素受体α(ERα)和ERβ表达;采用全自动生化分析仪检测大鼠的肝肾功能指标,包括丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)、超氧化物歧化酶(SOD)、血肌酐(Scr)、血尿素氮(BUN);采用酶联免疫吸附试验(ELISA)检测大鼠的血清E_(2)水平。结果:与模型组相比,E_(2)组、和坤汤组大鼠的阴道指数显著上升(P0.05)。结论:和坤汤能提高去卵巢大鼠的血清E_(2)水平,增加阴道雌激素受体表达,改善阴道萎缩,且作用温和,对子宫刺激较小、对肝肾功能无毒性作用。

关键词：和坤汤围绝经期阴道萎缩雌二醇肝肾毒性去卵巢大鼠