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Unraveling magnetic properties and martensitic transformation in Mn-rich Ni-Mn-Sn alloys:first-principles calculations and experiments

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Rare Metals 2024年第4期43卷 1769-1785页

作者： Yu Zhang Jing Bai Ke-Liang Guo Jia-xin Xu Jiang-Long Gu Nicola Morley Qui-Zhi Gao Yu-Dong Zhang Claude Esling Xiang Zhao Liang zuo Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Material Science and EngineeringNortheastern UniversityShenyang110819China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao066004China Department of Material Science and Engineering University of SheffieldSheffieldS13JDUK State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004China Laboratoire d’Étude des Microstructures Et de Mécanique des Matériaux University of Lorraine57045MetzFrance

We have investigated the phase stability,magnetic properties,and martensitic transformation thermodynamics/kinetics of the Ni_(24-x)Mn_(18+x+y)Sn_(6-y)(x,y=0,1,2)system by combining the first-principles calculations and *** calculation results show that the optimized lattice parameters are consistent with the experimental ***,we obtain the relation equation for the austenite formation energy(E_(form-A))and Mn content(X_(Mn)):E_(form-A)=507.358X_(Mn)-274.126,as well as for the six-layer modulated(6M)martensite formation energy(E_(form-6M))and Ni content(X_(Ni)):E_(form-6M)=-728.484X_(Ni)+*** ternary phase diagram of the total magnetic moment was *** excess Mn will reduce the total magnetic moment of 6M(Mag6M)and non-modulated(NM)(MagNM)martensites,with the following equations relating the total magnetic moment and Mn content:Mag_(6M)=-15.905X_(Mn)+7.902and Mag_(NM)=-14.781X_(Mn)+7.411,while the effect on austenite is *** variation of total magnetic moment is mainly dominated by the Mn atomic magnetic *** 3d electrons of Mn_(Sn)(Mn at Sn sublattice)play an important role in magnetic properties from the perspective of the electronic density of *** on the thermodynamics of martensitic transformation,the alloys will likely undergo austenite?6M?NM transformation *** the thermodynamic and kinetic results,the martensitic transformation temperature decreases with x increasing and increases with y *** results are expected to provide reference for predicting the phase stability and magnetic properties of NiMn-Sn alloys.

关键词： Ni-Mn-Sn First-principles calculations Martensitic transformation Magnetic property Kinetics

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防汛抗旱中的人水和谐观

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中国防汛抗旱 2018年第2期28卷 29-34,45页

作者：左其亭王鑫郑州大学郑州450001

我国是世界上水旱灾害最严重的国家之一,水旱灾害防治历来是水利工作的重点。随着经济社会的发展和防汛抗旱工作的深入,防汛抗旱工作在除水害、兴水利的同时也导致了人水关系的改变,甚至带来比较大的负面影响。研究了我国防汛抗旱工作... 详细信息

我国是世界上水旱灾害最严重的国家之一,水旱灾害防治历来是水利工作的重点。随着经济社会的发展和防汛抗旱工作的深入,防汛抗旱工作在除水害、兴水利的同时也导致了人水关系的改变,甚至带来比较大的负面影响。研究了我国防汛抗旱工作的开展历史和现状,总结了我国防汛抗旱工作中存在的问题,得出了应在防汛抗旱工作中贯彻人水和谐思想的结论,在此基础上,介绍了人水和谐理论在防汛抗旱中的具体应用;基于人水和谐的视角,针对我国防汛抗旱工作的不足提出了建议,包括转变防汛抗旱指导思想、调控人类活动、重视生态改造、建立防汛抗旱整体治理体系等,以期推动我国防汛抗旱观念和工作模式的转变,最终提高我国人水和谐的水平。

关键词：防汛抗旱人水和谐人水关系和谐论

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Side-Chain Type Ferrocene Macrocycles

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Precision Chemistry 2024年第4期2卷 143-150页

作者： Bin Lan Jindong Xu Lingyun Zhu xinyu Chen Hideya Kono Peihan wang xin zuo Jianfeng Yan Akiko Yagi Yongshen Zheng Songhua Chen Yaofeng Yuan Kenichiro Itami Yuanming Li Key Laboratory of Molecule Synthesis and Function Discovery(Fujian Province University) College of ChemistryFuzhou UniversityFuzhou 350108China Institute of Transformative Bio-Molecules(WPI-ITbM) Nagoya UniversityNagoya 464-8602Japan School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin 300350China Institute of Transformative Bio-Molecules(WPIITbM) Nagoya UniversityNagoya 464-8602Japan College of Chemistry and Material Science Longyan UniversityLongyan 364012China

A class of side-chain type ferrocene macrocycles with a radially conjugated system is introduced in this *** stereo configurations of these ferrocene rings were determined through single-crystal X-ray diffraction ***,in the solid state,the ferrocene rings exhibit a distinctive herringbone stacking pattern imposed by a ferrocene-to-ring host−guest *** UV−vis absorption spectroscopy,electrochemical measurements,and theoretical calculations,valuable insights into the electronic properties of these rings were *** addition,the single crystal of macrocycle A_(2)B demonstrates a second-order nonlinear optical *** a class of organometallic nanorings,this work holds great potential for further exploration in the fields of organometallic chemistry,molecular electronics,and host−guest chemistry.

关键词： Ferrocene Conjugated Macrocycles Organometallic Macrocycles Second-Order Nonlinear Optical Nanoring

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Genome assembly of autotetraploid Actinidia arguta highlights adaptive evolution and enables dissection of important economic traits

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Plant Communications 2024年第6期5卷 173-192页

作者： Xue-Mei Lu Xiao-Fen Yu Guo-Qiang Li Ming-Hao Qu Huan wang Chuang Liu Yu-Ping Man Xiao-Han Jiang Mu-Zi Li Jian wang Qi-Qi Chen Rui Lei Cheng-Cheng Zhao Yun-Qiu Zhou Zheng-wang Jiang zuo-Zhou Li Shang Zheng Chang Dong Bai-Lin wang Yan-Xiang Sun Hui-Qin Zhang Jie-Wei Li Quan-Hui Mo Ying Zhang xin Lou Hai-Xu Peng Ya-Ting Yi He-xin wang Xiu-Jun Zhang Yi-Bo wang Dan wang Li Li Qiong Zhang Wen-Xia wang Yongbo Liu Lei Gao Jin-Hu Wu Yan-Chang wang CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhanHubeiChina Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhouGansuChina College of Life Sciences University of Chinese Academy of SciencesBeijingChina Wuhan Frasergen Bioinformatics Co. LtdWuhanHubeiChina Institute of Soil and Fertilizer Anhui Academy of Agricultural SciencesHefeiChina College of Agricultural Sciences Xichang UniversityXichangSichuanChina Department of Horticulture Heilongjiang Academy of Agricultural SciencesHarbinHeilongjiangChina College of Life Sciences Langfang Normal UniversityLangfangHebeiChina Institute of Horticulture Zhejiang Academy of Agricultural SciencesHangzhouZhejiangChina Guangxi Institute of Botany Chinese Academy of SciencesGuilinGuangxiChina Xi’an Botanical Garden of Shaanxi Province Institute of Botany of Shaanxi ProvinceXi’anShaanxiChina Institute of Modern Agricultural Research Dalian UniversityDalianLiaoningChina Bioinformatics Center College of Plant Science and TechnologyBeijing University of AgricultureBeijingChina College of Agriculture Eastern Liaoning UniversityDandongLiaoningChina Dalian Institute of Chemical Physics Chinese Academy of SciencesDalianLiaoningChina State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental SciencesBeijingChina Hubei Hongshan Laboratory WuhanHubeiChina The New Zealand Institute for Plant and Food Research Limited AucklandNew Zealand

Actinidia arguta,the most widely distributed Actinidia species and the second cultivated species in the genus,can be distinguished from the currently cultivated Actinidia chinensis on the basis of its small and smooth fruit,rapid softening,and excellent cold *** evolution of tetraploid Actinidia species and the genetic basis of their important agronomic traits are still ***,we generated a chromosome-scale genome assembly of an autotetraploid male *** *** genome assembly was 2.77 Gb in length with a contig N50 of 9.97 Mb and was anchored onto 116 *** and clustering of 101 geographically representative accessions showed that they could be divided into two geographic groups,Southern and Northern,which first diverged 12.9 million years *** underwent two prominent expansions and one demographic bottleneck from the midPleistocene climate transition to the late *** genomics studies using paleoclimate data enabled us to discern the evolution of the species’adaptation to different historical *** genes(AaCEL1,AaPME1,and AaDOF1)related to flesh softening were identified by multi-omics analysis,and their ability to accelerate flesh softening was verified through transient expression assays.A set of genes that characteristically regulate sexual dimorphism located on the sex chromosome(Chr3)or autosomal chromosomes showed biased expression during stamen or carpel *** chromosome-level assembly of the autotetraploid *** genome and the genes related to important agronomic traits will facilitate future functional genomics research and improvement of ***.

关键词： kiwiberry dioecism adaptive evolution paleoclimate GEA rapid softening

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Mitigating kinetic hindrance of single-crystal Ni-rich cathodes through morphology modulation,nickel reduction,and lithium vacancy generation achieved by terbium doping

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Journal of Energy Chemistry 2024年第10期97卷 566-574,I0012页

作者： Jiyuan Jian Shuang Lin Guokang Han Xianglian Zhan Yinghui Shan Rang Xiao Ziwei Liu Dandan Sun xin Zhang Qingjie Zhou Geping Yin Hua Huo Yulin Ma Pengjian zuo xinqun Cheng Chunyu Du State Key Laboratory of Space Power-sources School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina Zibo Torch Energy Co.Ltd Zibo 255051ShandongChina

Single crystallization has proven to be effective in enhancing the capacity and stability of Ni-rich LiNi_(1-x-y)Co_(x)Mn_(y)O_(2)(SNCM)cathode materials,particularly at high cut-off ***,the synthesis of high-quality single-crystal particles remains challenging because of severe particle agglomeration and irregular ***,the limited kinetics of solid-phase Li^(+)diffusion pose a significant concern because of the extended diffusion path in large single-crystal *** address these challenges,we developed a Tb-doped single-crystal LiNi_(0.83)Co_(0.11)Mn_(0.06)O_(2)(SNCM-Tb)cathode material using a straightforward mixed molten salt sintering *** Tb-doped Ni-rich single crystals presented a quasi-spherical morphology,which is markedly different from those reported in previous ***^(4+)oping significantly enhanced the dynamic transport of Li^(+)ions in the layered oxide phase by reducing the Ni valence state and creating Li vacancies.A SNCM-Tb material with 1 at%Tb doping shows a Li^(+)diffusion coefficient up to more than 9 times higher than pristine SNCM in the non-diluted *** situ X-ray diffraction analysis demonstrated a significantly facilitated H1-H2-H3 phase transition in the SNCM-Tb materials,thereby enhancing their rate capacity and structural ***-Tb exhibited a reversible capacity of 186.9 mA h g^(-1)at 5 C,retaining 94.6%capacity after 100 cycles at 0.5 C under a 4,5 V *** study elucidates the Tb^(4+)doping mechanisms and proposes a scalable method for enhancing the performance of single-crystal Ni-rich NCM materials.

关键词： Lithium-ion batteries Ni-rich layered oxides Single crystals Tb^(4+) doping Li^(+) diffusion kinetics

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Exploring a novel class tryptophan hydroxylase 1 inhibitor derived from Sambucus williamsii Hance for the osteoporosis treatment

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Acupuncture and Herbal Medicine 2024年第1期4卷 102-112页

作者： Yu-xin Zhu Zi-Ling Tang Lu Lu zuo-Cheng Qiu Dabo Pan Yang Yu Hui-Hui Xiao Man-Sau Wong State Key Laboratory of Chinese Medicine and Molecular Pharmacology(Incubation) The Hong Kong Polytechnic University Shenzhen Research InstituteShenzhenChina Guangzhou Key Laboratory of Formula-Pattern of Traditional Chinese Medicine School of Traditional Chinese MedicineJinan UniversityGuangzhouChina Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research College of PharmacyJinan UniversityGuangzhouChina Department of Food Science and Nutrition The Hong Kong Polytechnic UniversityHong KongChina Research Center for Chinese Medicine Innovation The Hong Kong Polytechnic UniversityHong KongChina

Objective:Gut-derived serotonin strongly inhibits bone formation by inhibiting osteoblast *** previous study demonstrated that the lignan-rich fraction prepared from Sambucus willimasii Hance,a folk herbal medicine used to treat bone fractures and joint diseases in China,exerted bone-protective effects,and its actions were modulated by suppressing the synthesis of gut-derived serotonin via the inhibition of intestinal tryptophan hydroxylase 1(TPH-1).However,there is no direct evidence for the action of lignans on *** study aimed to verify the direct action of lignans on the TPH-1 and its influence on serotonin synthesis and bone ***:Molecular docking and surface plasmon resonance were performed to determine the affinities of lignans to *** cell viability and the protein activity and expression of TPH-1 were measured in RBL2H3 *** serum serotonin level and bone mineral density upon lignan treatment in ovariectomized mice were ***:The lignans showed high binding scores and binding affinities to TPH-1,inhibited the activity and protein expression of TPH-1,suppressed the serum serotonin levels in ovariectomized mice as well as promoted bone mineral ***:This is the first study to report that lignans are novel TPH-1 inhibitors and that these lignans could be potential agents for the management of serotonin-related diseases,including osteoporosis.

关键词： Lignan Osteoporosis Sambucus williamsii Hance Serotonin TPH-1 inhibitor

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殷墟甲骨文倒书现象研究

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文献 2024年第1期 4-18页

作者：左勇辛悦安徽大学历史学院西北大学历史学院

殷墟甲骨文倒书现象可归纳为笔画倒书、偏旁倒书、单字倒书、多字倒书与单例刻辞倒书、多例刻辞倒书、整版刻辞倒书等多种情况。在习刻刻辞与记事刻辞中,倒书现象相对比较常见。甲骨文倒书属于特殊形态,它既体现了甲骨文字的“原始性”... 详细信息

殷墟甲骨文倒书现象可归纳为笔画倒书、偏旁倒书、单字倒书、多字倒书与单例刻辞倒书、多例刻辞倒书、整版刻辞倒书等多种情况。在习刻刻辞与记事刻辞中,倒书现象相对比较常见。甲骨文倒书属于特殊形态,它既体现了甲骨文字的“原始性”,也展示出刻手的契刻习惯、技巧与态度对于文字刻写的巨大影响,而部分倒书现象则可能与内容区分、刻手习刻、龟骨登记等有关。倒书现象生动展现了甲骨文契刻的真实面貌。

关键词：商代甲骨文倒书契刻

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Theaflavins ameliorate insulin resistance and anxiety-like behavior induced by propionate combined with high-fat diet

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Food Science and Human Wellness 2024年

作者： Huijuan Bai Qian Yang Xiang zuo Qian Yu Qili Zhao Yifei Tian Yixin Xu Jiawei Du xin Zhao Xizeng Feng College of Life Science， State Key Laboratory of Medicinal Chemical Biology， Nankai University Institute of Robotics & Automatic Information System， College of Artificial Intelligence， Nankai University

Insulin resistance is a key pathological process in the development of type II diabetes， which can also lead to depression， anxiety and other symptoms. With the accelerated pace of life， food with high-energy and additives is becoming more and more common in people's diet. Propionate is a naturally existing short-chain fatty acid salt that has been widely used as a food preservative， but studies have found that low concentrations of propionate can induce insulin resistance. Theaflavins (TFs) are characteristic components of black tea， which have the biological activity of hypoglycemic and lipid-lowering. In the present study， we used propionate combined with high-fat diet to induce insulin resistance in mice and treated them with theaflavins. The results showed that propionate could aggravate insulin resistance and anxiety induced by high-fat diet in mice. TFs alleviated insulin resistance and anxiety induced by propionate combined with high-fat diet by improving the disorder of metabolic gene expression and inflammation in the adipose and liver tissue， as well as neuroinflammation in the brain. Our study suggests that the food additive propionate combined with a high-fat diet may be harmful to organismal health. As a natural drug， TFs have the potential to alleviate insulin resistance induced by propionate combined with high-fat diet.

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基于虚拟同步机参数自适应调节的并网逆变器控制策略研究

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太阳能学报 2024年第7期45卷 259-266页

作者：何鑫左芸裴杨映海刘翠周鑫王德林云南电网有限公司电力科学研究院昆明650217 西南交通大学电气工程学院成都611756

具有“小惯量,弱阻尼”典型特性的新能源并网后,当系统受到扰动时交流母线的频率会出现剧烈波动现象,存在恶化电网的频率稳定运行的潜在威胁。为此,提出一种改进的虚拟同步机(VSG)参数自适应控制策略。首先,控制逆变器按VSG方式运行并... 详细信息

具有“小惯量,弱阻尼”典型特性的新能源并网后,当系统受到扰动时交流母线的频率会出现剧烈波动现象,存在恶化电网的频率稳定运行的潜在威胁。为此,提出一种改进的虚拟同步机(VSG)参数自适应控制策略。首先,控制逆变器按VSG方式运行并使虚拟惯量和阻尼参数在运行过程中同时关联VSG输出角频率的偏差量和变化率,以达到平抑频率波动的目的;然后进一步对逆变器进行自适应优化控制,用功率偏差量代替原控制环节中的角频率导数项,避免自适应控制中的求导运算对系统造成不必要的噪声干扰,简化控制环节的同时也改善了频率的动态调节波形;最后,通过仿真算例证明了该文所提自适应控制策略的正确性,并验证了该文策略对扰动下系统有功功率及频率波动抑制的有效性。

关键词：并网逆变器自适应控制系统虚拟同步机虚拟惯性和阻尼

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State estimation for nonlinear Cyber-Physical System under quantization and Weighted Try-Once-Discard protocol subject to stochastic FDI attacks

State estimation for nonlinear Cyber-Physical System under q...

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第35届中国过程控制会议

作者： Hanxuan Sun Hongbo Xu Yuanlong Yue xin zuo Department of automation China University of Petroleum (Beijing)

This paper investigates the state estimation problem for nonlinear Cyber-Physical Systems(CPSs) with network communication constraints and stochastic false data injection(FDI) attacks. Specifically, the measurement output signals are quantized by uniform quantizers, and the quantized signals are transmitted through the communication channels scheduled by weighted try-once-discard(WTOD) protocol, which is employed to relieve the communication burden. Moreover, the Bernoulli processes are utilized to characterize the stochastic FDI attacks occurring on the communication channels and a data transmission model with Bernoulli-distributed white sequence is developed. Then, a state estimator is designed based on the proposed transmission model. Sufficient conditions are derived to guarantee the exponentially ultimate boundedness in the mean square by applying the Lyapunov function and the stochastic analysis approach. The estimator parameters are obtained by solving a set of linear matrix inequality(LMI) inequalities. Finally, the effectiveness and applicability of the estimator are validated by illustrative examples.

关键词： Cyber-physical system Quantization Stochastic false data injection attack Sensor saturation WTOD protocol

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