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Progress in Natural Science:Materials International 2019年第2期29卷 111-118页

作者： Ling Li Enshan Han Shunpan Qiao Hui Liu Yake Shi weiliang yuan School of Chemical Engineering and Technology Hebei University of Technology

In this paper, Li2FeSi0.98M0.02O4/C（M = Mg, Zn, Co, Mn, Ni） was synthesized as cathode material for lithium ion battery by solid-state method. The results show that the materials doped with Mg and Zn at the Si-sites have good initial discharge capacity. Then Li2FeSi1-xMxO4/C（M = Mg, Zn; x = 0.01, 0.02, 0.03, 0.05） were also synthesized via solid-state method. It is concluded that Li2FeSi0.99Mg0.01O4/C and Li2FeSi0.98Zn0.02O4/C have better initial discharge capacity which is 125 mAh/g and 166.2 mAh/g, respectively. The capacity of Li2Fe0.98Zn0.02SiO4/C is 157.3 m Ah/g after 10 cycles at 0.1 C, and the capacity retention rate is 94.6%. The Li+diffusion coefficient of Li2FeSi0.98Zn0.02O4/C is higher than that of pure phase materials by one order of magnitude. The Li2FeSi0.99Mg0.01O4/C and Li2FeSi0.98Zn0.02O4/C were tested by XRD and SEM. XRD patterns indicate that the crystal structure of Li2FeSiO4is not changed after being doped with metal ion at the Si-site. The SEM image indicates that no obvious agglomeration is detected in these materials. Li2FeSi0.98Zn0.02O4/C processes better electrochemical performance analyzed by EDS、XPS and FT-IR spectra. The data prove that Si4+is successfully replaced by Zn2+in the crystal structure of Li2FeSiO4.

关键词： Li2FeSiO4 Mg Zn doping Solid-state method Li-ion battery Electrochemical performance

Occurrence and biosynthesis of plant sesterterpenes (C25), a new addition to terpene diversity

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Plant Communications 2021年第5期2卷 35-44页

作者： Qingwen Chen Jianxu Li Yihua Ma weiliang yuan Peng Zhang Guodong Wang State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijingChina

Terpenes,the largest group of plant-specialized metabolites,have received considerable attention for their highly diverse biological ***(C10),sesquiterpenes(C15),diterpenes(C20),and triterpenes(C30)have been extensively investigated at both the biochemical and molecular levels over the past two ***(C25),an understudied terpenoid group,were recently described by plant scientists at the molecular *** review summarizes the plant species that produce sesterterpenes and describes recent developments in the field of sesterterpene biosynthesis,placing a special focus on the catalytic mechanism and evolution of geranylfarnesyl diphosphate synthase and sesterterpene ***,we propose several questions to be addressed in future studies,which may help to elucidate sesterterpene metabolism in plants.

关键词： terpene geranylfarnesyl diphosphate synthase metabolic gene clusters specialized metabolites sesterterpene(C25)

The Brief Exploration of the Value of Modern English Advertisements in EFL Teaching

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Sino-US English Teaching 2006年第5期3卷 47-52页

作者： weiliang yuan Yantai University

In the recent age of globalization, English advertisements prevail in people＇s everyday life. As a social discourse, advertisements offer valuable resources of language use to English learners. It is also of great importance to fully utilize these resources to improve the quality of EFL teaching, especially learners＇ abilities to gain English proficiency. Based on an analysis of recent findings in modem English advertising, the present paper proposes a framework of employing English advertisements in EFL teaching from linguistic, rhetorical, pragmatic and cultural perspectives.

关键词： English advertisements social discourse EFL teaching English proficiency

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时域有限差分法的优化吸收边界条件

西安电子科技大学学报 1998年第5期25卷 611-615页

作者：袁伟良梁昌洪西安电子科技大学微波电信工程系

基于单向波算子，给出了一个形式简洁的Ｎ阶优化吸收边界条件，给出了确定其参量的方法．数值结果表明，对于特定电磁问题，适当选择参量，优化吸收边界条件优于同阶Ｍｕｒ吸收边界条件．

关键词：时域有限差分法单向波算子吸收边界条件

Shared genetic architecture highlights the bidirectional association between major depressive disorder and fracture risk

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General Psychiatry 2024年第3期37卷 352-363页

作者： Pianpian Zhao Zhimin Ying Chengda yuan Haisheng Zhang Ao Dong Jianguo Tao Xiangjiao Yi Mengyuan Yang Wen Jin weiliang Tian David Karasik Geng Tian Houfeng Zheng The Affiliated Hangzhou First People’s Hospital School of MedicineWestlake UniversityHangzhouZhejiangChina Westlake Laboratory of Life Sciences and Biomedicine HangzhouZhejiangChina Diseases&Population(DaP)Geninfo Lab School of Life SciencesWestlake UniversityHangzhouZhejiangChina Institute of Basic Medical Sciences Westlake Institute for Advanced StudyHangzhouZhejiangChina Department of Orthopedic Surgery The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiangChina Department of Dermatology Hangzhou Hospital of Traditional Chinese MedicineHangzhouZhejiangChina Department of Global Statistics Eli Lilly and CompanyBranchburgNew JerseyUSA Azrieli Faculty of Medicine Bar-Ilan UniversitySafedIsrael Binzhou Medical University YantaiShandongChina

Background There is limited evidence suggesting that osteoporosis might exacerbate depressive symptoms,while more studies demonstrate that depression negatively affects bone density and increases fracture *** To explore the relationship between major depressive disorder(MDD)and fracture *** We conducted a nested case-control analysis(32670 patients with fracture and 397017 individuals without fracture)and a matched cohort analysis(16496 patients with MDD and 435492 individuals without MDD)in the same prospective UK Biobank data ***,we investigated the shared genetic architecture between MDD and fracture with linkage disequilibrium score regression and the MiXeR statistical *** used the conditional/conjunctional false discovery rate approach to identify the specific shared *** calculated the weighted genetic risk score for individuals in the UK Biobank and logistic regression was used to confirm the association observed in the prospective *** We found that MDD was associated with a 14%increase in fracture risk(hazard ratio(HR)1.14,95%CI 1.14 to 1.15,p<0.001)in the nested case-control analysis,while fracture was associated with a 72%increase in MDD risk(HR 1.72,95%CI 1.64 to 1.79,p<0.001)in the matched cohort analysis,suggesting a longitudinal and bidirectional ***,genetic summary data suggested a genetic overlap between MDD and ***,we identified four shared genomic loci,with the top signal(rs7554101)near *** protein encoded by SGIP1 is involved in cannabinoid receptor type 1 *** found that genetically predicted MDD was associated with a higher risk of fracture and vice *** addition,we found that the higher expression level of SGIP1 in the spinal cord and muscle was associated with an increased risk of fracture and *** The genetic pleiotropy between MDD and fracture highlights the bidirectional association observed in the epidemiological *** shared ge

关键词： fracture matched osteoporosis

The origin and evolution of Earth's nitrogen

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National Science Review 2024年第6期11卷 56-75页

作者： yuan Li State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of Sciences Bayerisches Geoinstitut Universit?t Bayreuth

Nitrogen is a vital element for life on Earth. Its cycling between the surface(atmosphere + crust) and the mantle has a profound influence on the atmosphere and climate. However, our understanding of the origin and evolution of Earth's nitrogen is still incomplete. This review presents an overview of the current understanding of Earth's nitrogen budget and the isotope composition of different reservoirs, laboratory constraints on deep nitrogen geochemistry, and our understanding of the origin of Earth's nitrogen and the deep nitrogen cycle through plate subduction and volcanism. The Earth may have acquired its nitrogen heterogeneously during the main accretion phase, initially from reduced, enstatite-chondrite-like impactors,and subsequently from increasingly oxidized impactors and minimal CI-chondrite-like materials. Like Earth's surface, the mantle and core are also significant nitrogen reservoirs. The nitrogen abundance and isotope composition of these three reservoirs may have been fundamentally established during the main accretion phase and have been insignificantly modified afterwards by the deep nitrogen cycle, although there is a net nitrogen ingassing into Earth's mantle in modern subduction zones. However, it is estimated that the early atmosphere of Earth may have contained ～1.4 times the present-day atmospheric nitrogen(PAN),with ～0.4 PAN being sequestered into the crust via biotic nitrogen fixation. In order to gain a better understanding of the origin and evolution of Earth's nitrogen, directions for future research are suggested.

关键词： nitrogen isotopes silicate Earth atmosphere magma ocean

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从时域模拟中提取微带结构的频域参数

微波学报 2000年第1期16卷 18-23页

作者：袁伟良梁昌洪史小卫西安电子科技大学微波电信工程系西安710071

本文利用时域有限差分法分析了微带线和微带不连续结构。采用电流馈电模型激励问题空间 ,与电压馈电模型相比 ,它简化了馈电模型算法 ,提高了计算精度。考虑到辐射损耗 ,借助Fourier变换和电报方程 ,从时域响应中提取微带线的传播常数... 详细信息

本文利用时域有限差分法分析了微带线和微带不连续结构。采用电流馈电模型激励问题空间 ,与电压馈电模型相比 ,它简化了馈电模型算法 ,提高了计算精度。考虑到辐射损耗 ,借助Fourier变换和电报方程 ,从时域响应中提取微带线的传播常数和特性阻抗。把微带不连续结构看作二端口有耗网络 ,从时域模拟中提取网络的 S参数 ,并给出损耗率以刻画网络的辐射损耗。

关键词：时域有限差分频域传播常数微带线微带结构

Robustness of the octupole collectivity in 144Ba within the cranking covariant density functional theory in 3D lattice

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Nuclear Science and Techniques 2024年第8期35卷 124-131页

作者： Ze‑Kai Li yuan‑yuan Wang Mathematics and Physics Department North China Electric Power UniversityBeijing 102206China Hebei Key Laboratory of Physics and Energy Technology North China Electric Power UniversityBaoding 071000China

The octupole deformation and collectivity in octupole double-magic nucleus 144Ba are investigated using the Cranking covariant density functional theory in a three-dimensional lattice *** reduced B(E3)transition probability is implemented for the first time in semiclassical approximation based on the microscopically calculated electric octupole *** available data,including the I-ωrelation and electric transitional probabilities B(E2)and B(E3)are well ***,it is shown that the ground state of 144Ba exhibits axial octupole and quadrupole deformations that persist up to high spins(I≈24h).

关键词： Octupole collectivity Cranking covariant density functional theory Rotational spectrum Electric transitional probabilities

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矩量法结合网络理论分析对数周期偶极天线

微波学报 2000年第2期16卷 106-110页

作者：袁伟良梁昌洪史小卫西安电子科技大学微波电信工程系西安710071

本文利用路 -阵方法分析了对数周期偶极天线。采用矩量法分析天线阵网络 ,网络理论分析集合线网络。借助集合线网络、天线阵网络和矩量法分段上电压电流的联系 ,把两个网络有机结合起来 ,给出形式简洁的天线电流分布解 ,并减少了计算量。

关键词：对数周期偶极天线路-阵方法矩量法网络理论

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辽宁省产业金融发展的问题及对策

黑河学院学报 2022年第11期13卷 44-46页

作者：袁伟良辽宁对外经贸学院经济学院辽宁大连116052

产业金融是服务产业发展的专业化金融。辽宁省产业金融存在地方法人金融机构实力较弱、直接融资渠道有待拓宽、基金市场发展水平不高、产业金融机构数量少、规模小、区域金融生态环境存在短板等问题。应从引进和培育金融机构、完善直接... 详细信息

产业金融是服务产业发展的专业化金融。辽宁省产业金融存在地方法人金融机构实力较弱、直接融资渠道有待拓宽、基金市场发展水平不高、产业金融机构数量少、规模小、区域金融生态环境存在短板等问题。应从引进和培育金融机构、完善直接融资服务体系、健全基金发展体系、发展壮大产业金融机构、完善优化区域金融生态环境等五个方面加强统筹和规划,以促进产业金融发展,为辽宁工业振兴提供坚强金融保障。

关键词：辽宁产业金融工业振兴产业发展金融保障