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mass splitting of vector mesons and spontaneous spin polarization under rotation

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Chinese Physics C 2022年第2期46卷 90-104页

作者： Minghua Wei yin Jiang mei Huang School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Department of Physics BeiHang UniversityBeijing 100191China

In this study,we investigate the effect of rotation on the masses of scalar and vector mesons in the framework of the 2-flavor Nambu-Jona-Lasinio *** existence of rotation produces a tedious quark propagator and a corresponding polarization *** applying the random phase approximation,the meson mass is numerically *** is found that the behavior of scalar and pseudoscalar meson masses under angular velocity ω is similar to that at a finite chemical potential;both rely on the behavior of the constituent quark mass and reflect the property related to chiral ***,vector meson ρ masses have a more profound relation to *** analytical and numerical calculations,it turns out that at low temperature and small chemical potential,the mass for spin component s_(z)=0,±1 of a vector meson under rotation exhibits a very simple mass splitting relation m^(s_(z))_(ρ)(ω)=m_(ρ)(ω=0)-ωs_(z),similar to the Zeeman splitting of a charged meson under magnetic ***,the mass of the spin component s_(z)=1 of vector meson ρ decreases linearly with ω and reaches zero at ω_(c)=m_(ρ)(ω=0),which indicates that the system will develop s_(z)=1 vector meson condensation and the system will be spontaneously spin-polarized under rotation.

关键词： rotation QGP meson mass

S2-Net:Self-Supervision Guided Feature Representation Learning for Cross-Modality Images

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IEEE/CAA Journal of Automatica Sinica 2022年第10期9卷 1883-1885页

作者： Shasha mei Yong ma Xiaoguang mei Jun Huang Fan Fan the Electronic Information School Wuhan UniversityWuhan 430072China

Dear Editor,This letter focuses on combining the respective advantages of cross-modality images which can compensate for the lack of information in the single ***,due to the great appearance differences between cross-... 详细信息

关键词： Image Net letter

Crystalline,Rheological and Mechanical Enhancement in PBAT/PPC/Silica Nanocomposites with Double Percolation Network

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Chinese Journal of Polymer Science 2022年第11期40卷 1482-1492页

作者： You-mei ma Feng-Xiang Gao Shu-Ling Zhang College of Chemistry Jilin UniversityChangchun130012China Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China

Nanocomposites of blends of biodegradable poly(butylene adipate-co-terephthalate)(PBAT)and sustainable poly(propylene carbonate)(PPC)with nanosilica were prepared by melt compounding ***/PPC blend was partially miscible system with sea-island structure,and nanosilica particles were selectively dispersed in the continuous phase PBAT matrix to form the double percolation *** introduction of nanosilica into PBAT/PPC blend reduced the size of dispersed PPC phase,promoted the crystallization of PBAT in the nanocomposites,and increased the storage modulus of the *** study of rheological behaviors indicated that the double percolation network was formed at the nanosilica loading of 5 wt%,as a result,the nanocomposites exhibited the solid-like viscoelastic behavior and their relaxation time was *** the increase of the nanosilica content,the PBAT/PPC/silica nanocomposites displayed increased Young's modulus and yield strength.

关键词： Nanocomposites Selective dispersion Double percolation Enhanced properties

Promoting Bone Mesenchymal Stem Cells and Inhibiting Bacterial Adhesion of Acid-Etched Nanostructured Titanium by Ultraviolet Functionalization

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Journal of materials Science & Technology 2015年第2期31卷 182-190页

作者： Guobo Lan mei Li ying Tan Lihua Li Xiaoming Yang Limin ma Qingshui yin Hong Xia Yu Zhang Guoxin Tan Chengyun Ning Southern Medical University Hospital of Orthopedics General Hospital of Guangzhou Military Command Faculty of Light and Chemical Guangdong University of Technology College of materials Science and Technology South China University of Technology

Titanium(Ti) and its alloys are used extensively in orthopedic implants because of their excellent biocompatibility,mechanical properties and corrosion resistance. However,titanium-based implant materials face many severe complications,such as implant loosening due to poor osseointegration and bacterial infections,which may lead to implant failure. Hence,preparing a biomaterial surface,which enhances the interactions with host cells and inhibits bacterial adhesion,may be an optimal strategy to reduce the incidence of implant failure. This study aims to improve osseointegration and confer antibacterial properties on Ti through a combination of two surface modifications including nanostructuring generated by acid etching and ultraviolet(UV) light *** results showed that without UV treatment,the acid etching treatment of Ti surface was effective at both improving the adhesion of bone mesenchymal stem cells(BMSCs) and increasing bacterial adhesion. A further UV treatment of the acid-etched surface however,not only significantly improved the cell adhesion but also inhibited bacterial adhesion. The acid-etched nanostructured titanium with UV treatment also showed a significant enhancement on cell proliferation,alkaline phosphatase(ALP) activity and mineralization. These results suggest that such nanostructured materials with UV treatment can be expected to have a good potential in orthopedic applications.

关键词： UV treatment Nanostructures Bone mesenchymal stem

A study on simultaneous removal of NO and SO2 by using sodium persulfate aqueous scrubbing

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Chinese Journal of Chemical Engineering 2018年第7期26卷 1536-1544页

作者： Xue Kang Xiaoxun ma Jian'an yin Xuchun Gao School of Chemical Engineering Northwest UniversityXi'an 710069China Chemical Engineering Research Center of the Ministry of Education(MOE)for Advanced Use Technology of Shanbei Energy Xi'an 710069China Shaanxi Research Center of Engineering Technology for Clean Coal Conversion Xi'an 710069China International Scientific and Technological Cooperation Base of the Ministry of Science and Technology(MOST)for Clean Utilization of Hydrocarbon Resources.Xi'an 710069 China Xi'an Shaangu Power Co. Ltd.Xi'an 710075China

Nitric oxide （NO） removal and sulfur dioxide （SO2） removal by sodium persulfate （Na2S2O8） were studied in a Bubble Column Reactor. The proposed reaction pathways of NO and SO2 removal are discussed. The effects of temperatures （35-90℃）, Na25208 （0.05-0.5 mol·L-1）, FeSO4 （0.5-5.0 m mol·L-1） and H2O2 （0.25 mol·L-1） on NO and SO2 removal were investigated. The results indicated that increased persulfate concentration led to increase in NO removal at various temperatures. SO2 was almost completely removed in the temperature range of 55-85 ℃. Fe2 ＋ accelerated persulfate activation and enhanced NO removal efficiency. At 0.2 mol· L- 1 Na2S2O8 and 0.5-1.0 mmol· L-1Fe2 ＋, NO removal of 93.5%-99% was obtained at 75-90 ℃, SO2 removal was higher than 99% at all temperatures. The addition of 0.25 mol. L i H202 into 0.2 mol·L-1· Na2S2O8 solution promoted NO removal efficiency apparently until utterly decomposition of H2O2, the SO2 removal was as high as 98.4% separately at 35 ℃ and 80 ℃.

关键词： Simultaneous removal of NO and SO2 Sodium persulfate Ferrous sulfate Hydrogen peroxide Active radicals

Solving multi-objective constrained minimum weighted bipartite assignment problem: a case study on energy-aware radio broadcast scheduling

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Science China(Information Sciences) 2022年第8期65卷 23-38页

作者： Yupeng ZHOU Mingjie FAN Feifei ma Minghao yin College of Information Science and Technology Northeast Normal University Laboratory of Parallel Software and Computational Science Institute of Software Chinese Academy of Sciences State Key laboratory of Computer Science Institute of Software Chinese Academy of Sciences

This paper proposes a multi-objective constrained minimum weighted bipartite assignment problem(MCMWBAP), which is considered an extension of the classical bipartite matching problem(BMP). We first provide the formulation of the MCMWBAP and prove that it is an NP-hard combinatorial optimization problem. Based on this formulation, multi-objective energy-aware shortwave radio broadcast resource allocation problem(MSRBRAP) application is studied. The goal of this problem is to allocate radio programs to transmission devices to broadcast all radio programs felicitously with a maximized objective of total qualified monitoring sites and a minimized objective of energy consumption. Then, a novel multi-objective hybrid evolutionary algorithm(MOHEA), which is integrated with push and pull initialization, the dynamic resource allocation strategy, and the aggregate local search procedure, is developed to solve the *** proposed method is evaluated using two categories of benchmarks for MCMWBAP together with a real scenario case study for MSRBRAP. Furthermore, the key components of MOHEA are analyzed, and the experimental results demonstrate that MOHEA outperforms two classical multi-objective evolutionary algorithms(NSGA-II and MOEA/D), improving working efficiency.

关键词： constrained minimum weighted bipartite assignment multi-objective energy-aware radio broadcast scheduling evolutionary algorithms dynamic resource allocation aggregate local search

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Gemcitabine plus concurrent irreversible electroporation vs gemcitabine alone for locally advanced pancreatic cancer

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World Journal of Clinical Cases 2020年第22期8卷 5564-5575页

作者： Yang-Yang ma yin Leng Yan-Li Xing Hong-mei Li Ji-Bing Chen Li-Zhi Niu Central Laboratory Affiliated Fuda Cancer HospitalJinan UniversityGuangzhou 510665Guangdong ProvinceChina Department of Oncology Affiliated Fuda Cancer HospitalJinan UniversityGuangzhou 510665Guangdong ProvinceChina Department of Interventional Radiology Affiliated Fuda Cancer HospitalJinan UniversityGuangzhou 510665Guangdong ProvinceChina

BACKGROUND Locally advanced pancreatic cancer(LAPC)is a common malignant digestive system tumor that ranks as the fourth leading cause of cancer-related death in the *** prognosis of LAPC is poor even after standard *** electroporation(IRE)is a novel ablative strategy for *** studies have confirmed the safety of *** date,no prospective studies have been performed to investigate the therapeutic efficacy of conventional gemcitabine(GEM)plus concurrent *** To compare the therapeutic efficacy between conventional GEM plus concurrent IRE and GEM alone for *** From February 2016 to September 2017,a total of 68 LAPC patients were treated with GEM plus concurrent IRE(n=33)or GEM alone(n=35).Overall survival(OS),progression free survival(PFS),and procedure-related complications were compared between the two *** analyses were performed to identify any prognostic *** There were no treatment-related *** technical success rate of IRE ablation was 100%.The GEM+IRE group had a significantly longer OS from the time of diagnosis of LAPC(19.8 mo vs 9.3 mo,P<0.0001)than the GEM alone *** GEM+IRE group had a significantly longer PFS(8.3 mo vs 4.7 mo,P<0.0001)than the GEM alone *** volume less than 37 cm3 and GEM plus concurrent IRE were identified as significant favorable factors for both the OS and *** Gemcitabine plus concurrent IRE is an effective treatment for patients with LAPC.

关键词： Irreversible electroporation Gemcitabine Locally advanced pancreatic cancer Overall survival Progression free survival Prognostic factors

A Scheme for Teleportation of an Unknown Entangled Coherent State via Raman Interaction

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Communications in Theoretical Physics 2007年第2期47卷 330-332页

作者： CHEN mei-Feng ma Song-She Department of Electronic Science and Applied Physics Fuzhou University Fuzhou 350002 China

A scheme is reported for the teleportation of entangled coherent states through the degenerate Raman interaction. The scheme uses an entangled state of an atom and two coherent states as a quantum channel. It makes lu... 详细信息

关键词： Raman interaction teleportation entangled coherent state

First-principles study on persistent luminescence mechanism of LiYGeO_(4):Eu^(3+)

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Journal of Rare Earths 2023年第10期41卷 1519-1524,I0002页

作者： Shihang Zhou Bibo Lou Chong-Geng ma Min yin Xinjiang Key Laboratory for Luminescence Minerals and Optical Functional materials School of Physics and Electronic EngineeringXinjiang Normal UniversityUrumqi830054China CAS Key Laboratory of Strongly-Coupled Quantum matter Physics and School of Physical SciencesUniversity of Science and Technology of ChinaHefei230026China School of Optoelectronic Engineering&CQUPT-BUL Innovation Institute Chongqing University of Posts and TelecommunicationsChongqing400065China

LiYGeO_(4):Eu^(3+)is a red persistent luminescent material with a duration of more than 21 *** its persistent luminescence phenomenon has been fully studied,its detailed mechanism is still the subject of ***,we performed first-principles study on the intrinsic point defects and the charge transfer processes in LiYGeO_(4):Eu^(3+)to reveal the mechanism of persistent *** results show that,under charge transfer excitation,the electron is promoted from the valence band(oxygen ion ligand)to the central Eu^(3+)ion to form Eu^(2+)ion in LiYGeO_(4):Eu^(3+),leaving a hole *** charge transfer excitation can relax quickly to the excited state of the Eu^(3+)ion,which produces the characteristic^(5)D_(0)→^(7)F_(J)(J=0-6)*** Li vacancies(V_(Li))and the antisite defects of Li replacing Y site(Li_(Y))and Y replacing Li site(YLi)are main defects,while O vacancies(V_(O))are less important in concentration due to high formation *** and Liy can serve as hole-type traps,with the trap depths suitable for trapping the holes produced by *** delayed release holes can combine with the Eu^(2+)left behind by the illumination,leading to persistent *** VLi trap is shallower than Li_(Y),and the latter is responsible for the long duration of persistent luminescence.A schematic based on the calculation results is constructed to illustrate the mechanism of persistent luminescence.

关键词： Persistent Iuminescence Eu^(3+) Charge transfer Point defects First-principles Rare earths