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Further study ofΩ^(*)|1P_(3/2^(-))within a chiral quark model

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Chinese Physics C 2023年第6期47卷 36-44页

作者：钟慧华倪如辉陈慕阳钟显辉谢聚军 Department of Physics Hunan Normal UniversityKey Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationChangsha 410081China Synergetic Innovation Center for Quantum Effects and Applications(SICQEA) Hunan Normal UniversityChangsha 410081China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 101408China

In our previous studies,we analyzed the two-body strong decays of the low-lyingΩbaryon states within a chiral quark *** results showed that the mass,total width,and two body decayΩ(2012)→■could be well reproduced with the spin-parity J^(P)=3/2^(-)stateΩ^(*)|1P_(3/2^(-))>classified in the quark *** by the new observations of the three-body decay processΩ(2012)^(-)→■at Belle,in the present study,we further investigate the three-body strong decayΩ^(*)|1P_(3/2^(-))>→■within the chiral quark *** is found that theΩ^(*)|1P_(3/2^(-))>has a sizeable decay rate into the three-body final states■.When consideringΩ^(*)|1P_(3/2^(-))>as theΩ(2012)resonance,the predicted ratio■is close to the upper limit 11%measured by the Belle Collaboration in 2019;however,it is too small to be comparable to the recent measurement 0.97±0.24±*** addition,the coupled-channel effects on the bare three-quark stateΩ^(*)|1P_(3/2^(-))>from nearby channels■are *** theoretical results show that the coupled-channel effects onΩ^(*)|1P_(3/2^(-))>are not very large,and the molecular component is no more than 30%.To clarify the nature ofΩ(2012)resonance,precise measurements on the ratio■are needed,and further investigation on the effects of coupled channels is recommended.

关键词： Q(2012) chiral quark model three body decay

Photo-production of lowest∑^(*)_(1/2) state within the Regge-effective Lagrangian approach

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Chinese Physics C 2023年第5期47卷 139-146页

作者：吕云鹤张晗韦能昌柯百谦王恩谢聚军 School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China School of Nuclear Science and Technology University of Chinese Academy of SciencesBejing 101408China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Southern Center for Nuclear-Science Theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China

Because the lowest ∑^(*) state with quantum numbers spin-parity J^(P)=1/2-is far from being established experimentally and theoretically,we perform a theoreticalstudy on the ∑^(*)_(1/2)-photo-production within the Regge-effective Lagrangian *** that ∑^(*)_(1/2)-couples to the KN channel,westudy the contributions from the t-channel K^(*) exchange ***,the contributions from the t-channel K^(*) exchange,s-channel nucleon pole,u-channel 2 exchange,and contact term are *** differential and total cross sections of the processγn→K+∑^(*)_(1/2)-are predicted with our model *** results should help in experimentaly searching for the ∑^(*)_(1/2)-state in the future.

关键词： ∑(1480)effective Lagrangian approach photoproduction

Novel rechargeable calcium phosphate nanoparticle-containing orthodontic cement

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International Journal of Oral Science 2017年第1期9卷 24-32页

作者： Xian-ju xie Dan Xing Lin Wang Han Zhou Michael D Weir Yu-Xing Bai Hockin HK Xu Department of Orthodontics School of StomatologyCapital Medical UniversityBeijingChina Biomaterials and Tissue Engineering Division Department of EndodonticsPeriodontics and ProsthodonticsUniversity of Maryland Dental SchoolBaltimoreUSA Department of Dentistry China Rehabilitation Research CenterBeijingChina VIP Integrated Department Stomatoiogical Hospital of Jilin UniversityChangchunChina Center for Stem Cell Biology and Regenerative Medicine University of Maryland School of MedicineBaltimoreUSA and Department of Mechanical Engineering University of MarylandBaltimore CountyUSA

White spot lesions （WSLs）, due to enamel demineralization, occur frequently in orthodontic treatment. We recently developed a novel rechargeable dental composite containing nanoparticles of amorphous calcium phosphate （NACP） with long-term calcium （Ca） and phosphate （P） ion release and caries-inhibiting capability. The objectives of this study were to develop the first NACP- rechargeable orthodontic cement and investigate the effects of recharge duration and frequency on the efficacy of ion re-release. The rechargeable cement consisted of pyromellitic glycerol dimethacrylate （PMGDM） and ethoxylated bisphenol A dimethacrylate （EBPADMA）. NACP was mixed into the resin at 40% by mass. Specimens were tested for orthodontic bracket shear bond strength （SBS） to enamel, Ca and P ion initial release, recharge and re-release. The new orthodontic cement exhibited an SBS similar to commercial orthodontic cement without CaP release （P〉 0.1）. Specimens after one recharge treatment （e.g., 1 min immersion in recharge solution repeating three times in one day, referred to as ＂1 min 3 times＂） exhibited a substantial and continuous re-release of Ca and P ions for 14 days without further recharge. The ion re-release did not decrease with increasing the number of recharge/re-release cycles （P〉 0.1）. The ion re-release concentrations at 14 days versus various recharge treatments were as follows： 1 min 3 times〉3 min 2 times〉 1 min 2 times〉6 min 1 time〉3 min 1 time〉 1 min 1 time. In conclusion, although previous studies have shown that NACP nanocomposite remineralized tooth lesions and inhibited caries, the present study developed the first orthodontic cement with Ca and P ion recharge and long-term release capability. This NACP-rechargeable orthodontic cement is a promising therapy to inhibit enamel demineralization and WSLs around orthodontic brackets.

关键词： bond strength calcium phosphate nanoparticles calcium phosphate ion rechargeability long-term ion release orthodonticcement white spot lesions

Rupture directivity effect on strong ground motion during the 12 May 2008 M_(W)7.9 Wenchuan earthquake

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Earthquake Science 2021年第3期34卷 234-245页

作者： Zhao An jun-ju xie Yong Zhang Xiao-jun Li Zeng-Ping Wen Institute of Geophysics China Earthquake AdministrationBeijing 100081China School of Earth and Space Sciences Peking UniversityBeijing 100871China China Earthquake Hazard and Insurance Research Laboratory Beijing 100081China College of Architecture and Civil Engineering Beijing University of TechnologyBeijing 100124China

We focus here on the rupture directivity effect on the spatial distribution and attenuation characteristics of near-field ground motions during the 2008 MW7.9 Wenchuan *** examine the difference between the observed ground motions in and opposite the rupture directions and compare them with Next Generation Attenuation-West2(NGA-West2)ground motion prediction *** isochrone directivity predictor is used to quantify the band-limited nature of the rupture directivity effect on strong ground *** results show that the observed peak ground velocity(PGV)and spectral accelerations of periods of 1.0 s and longer are significantly amplified in the rupture direction,but de-amplified in the opposite direction affected by rupture directivity effect of this *** contrast,the effect of rupture directivity on the observed peak ground acceleration(PGA)and periods of shorter than 1.0 s are relatively *** rupture directivity of this event shows clear period dependent and band limited characteristics with the strongest effect occurring around the period of 7.5 s.

关键词： Wenchuan earthquake long-period ground motion near-fault ground motion rupture directivity

Case Report： Concurrent pulmonary thrombosis with systemic embolism： a case report

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2014年第9期15卷 838-844页

作者： Xiao-jie xie ju-bo JIANG jun JIANG Jian-an WANG Department of Cardiology the Second Affiliated Hospital School of Medicine Zhejiang University Hangzhou 310009 China

Based on different mechanisms of blood coagulation, coexistence of venous thromboembolism and arterial thrombosis in a single individual is extremely rare in clinical practice. Both antiplatelet and anticoagulation therapy should be adopted for patients with arteriovenous embolism. Balancing the risk of ischemia and hemorrhage is especially challenging in these patients in order to achieve an optimal clinical benefit. We report on a 55-year-old female with acute pulmonary embolism （PE）, subsequently diagnosed as having acute myocardial infarction （AMI） and a cerebral infarction. Examinations had been carried out, excluding potential arteriovenous shunts, cancer, an- tiphospholipid syndrome and other common hypercoagulable states. A combination of an anticoagulant drug （rivaroxaban, an Xa inhibitor） and an antiplatelet agent （clopidogrel, an ADP receptor inhibitor） was prescribed with a β-blocker and atorvastatin. The embolus was gradually shrunk during the next 10 months, and then it turned back into expanding. During the 16 months＇ follow-up, an aneurysm of left ventricular apex was found through an echocardiogram and an angiotensin-converting enzyme inhibitor was administered. We conclude that combined anticoagulation and antiplatelet therapy significantly relieved the symptoms and improved the prognosis in patients suffering from arteriovenous embolism without any major clinical bleeding events.

关键词： Pulmonary thrombosis Cerebral infarction Acute myocardial infarction (AMI) Ventricular aneurysm

基于残差U型卷积网络的海面风速多步时空预测

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控制与决策 2023年第7期38卷 1845-1853页

作者：谢莒芃张华军黄双曹旭武汉理工大学自动化学院武汉430070 武汉第二船舶设计研究所第五研究室武汉430205

准确的海面风速预测是保证远洋船舶航行安全和节能减排的重要条件.针对远洋航行领域的海面风速预测存在空间特征难以解析和多步预测精度偏低两个问题,设计一种改进的多步时空预测方法.在多步预测方面,使用超前时刻策略使单个模型学习并... 详细信息

准确的海面风速预测是保证远洋船舶航行安全和节能减排的重要条件.针对远洋航行领域的海面风速预测存在空间特征难以解析和多步预测精度偏低两个问题,设计一种改进的多步时空预测方法.在多步预测方面,使用超前时刻策略使单个模型学习并区分不同的预测时刻,并将海面风向作为外生变量,将月份、日期和时刻作为协变量,与历史风速数据结合以扩展样本空间.在空间特征方面,利用编码器-解码器结构的残差U型卷积神经网络,对多层级空间信息进行提取和解析,并将超前时刻特征同时输入编码器和解码器,强化深层特征解析为对应预测时刻的效果.在全球原油运输路线上进行的12小时预测实验表明,所提出方法较其他6种预测方法具有更低的预测误差.

关键词：深度学习时空预测多步预测风速卷积神经网络外生变量

文化强国建设背景下优秀文艺作品在高校校园文化建设中的应用

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湖北开放职业学院学报 2023年第3期36卷 42-44页

作者：谢菊广西卫生职业技术学院广西南宁530000

党的十八大以来,以习近平同志为核心的党中央高度重视“文化自信”,十九届五中全会明确提出到2035年建成“文化强国”,给高校校园文化建设带来新的机遇与挑战。探索优秀文艺作品在高校校园文化建设中的应用,发挥以文化人以文育人功能,... 详细信息

党的十八大以来,以习近平同志为核心的党中央高度重视“文化自信”,十九届五中全会明确提出到2035年建成“文化强国”,给高校校园文化建设带来新的机遇与挑战。探索优秀文艺作品在高校校园文化建设中的应用,发挥以文化人以文育人功能,对促进高校校园文化建设、培养全面发展的时代新人、为建成文化强国贡献力量具有重要意义。

关键词：优秀文艺作品校园文化文化强国

乡村幼儿园自然文化教育资源开发与利用实践探索——以山东淄博高新区傅山幼儿园为例

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陕西学前师范学院学报 2023年第12期39卷 117-120页

作者：解菊淄博高新区傅山幼儿园山东淄博255084

以淄博高新区傅山幼儿园自然文化资源开发和利用的实践探索为例,强调充分开发和利用乡土自然文化资源是我国乡村幼儿园教育高质量发展的重要保障。主要建议:广泛调查并深入开发乡土自然文化教育资源;积极创设幼儿园乡土自然文化教育微场... 详细信息

以淄博高新区傅山幼儿园自然文化资源开发和利用的实践探索为例,强调充分开发和利用乡土自然文化资源是我国乡村幼儿园教育高质量发展的重要保障。主要建议:广泛调查并深入开发乡土自然文化教育资源;积极创设幼儿园乡土自然文化教育微场景;精心设计与实施跨学科整合式自然文化主题活动。

关键词：乡村幼儿园自然文化教育资源开发利用高质量发展

Triangle singularity enhancing isospin violation in B^0_s→ J/ψπ~0f_0(980)

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Chinese Physics C 2018年第4期42卷 157-165页

作者： Wei-Hong Liang S. Sakai ju-jun xie E. Oset Department of Physics Guangxi Normal University Guilin 541004 China Departamento de Física Teórica and IFIC Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna Aptdo. 22085 46071 Valencia Spain Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China

We perform calculations for the Bs0→ J/ψπ0f0（980） and Bs0 → J/ψπ0a0（980） reactions, showing that the first is isospin-suppressed while the second is isospin-allowed. The reaction proceeds via a triangle mechanism, with Bs0 →J/ψK＊ K ＋c.c., followed by the decay K＊ →Kπ and a further fusion of KK into the f0（980） or a0（980）. We show that the mechanism develops a singularity around the π0 f0（980） or π0a0（980） invariant mass of 1420 MeV, where the π0f0 and π0a0 decay modes are magnified and also the ratio of π0f0 to π0a0 production. Using experimental information for the Bs0 → J/ψK＊K ＋c.c. decay, we are able to obtain absolute values for the reactions studied which fall into the experimentally accessible range. The reactions proposed and the observables evaluated, when contrasted with actual experiments, should be very valuable to obtain information on the nature of the low lying scalar mesons.

关键词： triangle singularity light scalar meson isospin violation bottom meson decay