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Spectral Gap for Open Jackson Networks

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Acta Mathematica Sinica,English Series 2015年第12期31卷 1879-1894页

作者： Yong Hua MAO liang hui xia School of Mathematical Sciences LMCSMinistry of Education Beijing Normal University Department of Mathematics Ji'nan University

We generalize the decomposition method of the finite Markov chains for Poincare inequality in Jerrum et al.（***.,14,1741-1765（2004）） to the reversible continuous-time Markov *** inductively,we give the lower bound of spectral gap for the ergodic open Jackson network by the decomposition method and the symmetrization *** upper bound of the spectral gap is also presented.

关键词： Jackson networks reversibility decomposition of Markov chain spectral gap symmetrization

Synthesis of Cordierite by Decomposition of Metal Nitrates on the Surface of Carbon Black Powder

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Journal of Wuhan University of Technology(Materials Science) 2004年第4期19卷 103-105页

作者：谢志勇 Tianjin University

Cordierite precursor was obtained through a process, which involved the decomposition of metal nitrates on the surface of ultrafine carbon black powder between 100-300℃ and the gasification of the carbon black at higher temperature in air. The average size of the particles, which were heat-treated at 700℃ for 10h, is about 1020nm, and the specific surface area is about 129m 2/g. The experimental results show that the ultrafine particles of cordierite precursor can be produced by this process. The precursor powder was calcined at different temperatures. X-ray diffraction examination indicates that β-quartz is crystallized from the amorphous matrix around 850℃ firstly and then MgO-Al 2O 3 spinel and α-cordierite appears. Above 1000℃, MgO-Al 2O 3 spinel and cristobalite disappear gradually and form an intermediate phase (sapphirine). At around 1300℃, the main phase is α-cordierite, and no other phase is detected.

关键词： cordierite carbon black powder sapphirine MgO-Al 2O 3 spinel

Efficient OpenMP Based Z-curve Encoding and Decoding Algorithms

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Computers, Materials & Continua 2025年第1期82卷 1313-1327页

作者： Zicheng Zhou Shaowen Sun Teng liang Mengjuan Li Fengling xia School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China Faculty of Information Engineering and Automation Kunming University of Science and TechnologyKunming650500China School of Communications Information Engineering Yunnan Communications Vocational and Technical CollegeKunming650500China Library Yunnan Normal UniversityKunming650500China Faculty of Civil Aviation and Aeronautics Kunming University of Science and TechnologyKunming650500China

Z-curve’s encoding and decoding algorithms are primely important in many Z-curve-based *** bit interleaving algorithm is the current state-of-the-art algorithm for encoding and decoding *** simple,its efficiency is hindered by the step-by-step coordinate shifting and bitwise *** tackle this problem,we first propose the efficient encoding algorithm LTFe and the corresponding decoding algorithm LTFd,which adopt two optimization methods to boost the algorithm’s efficiency:1)we design efficient lookup tables(LT)that convert encoding and decoding operations into table-lookup operations;2)we design a bit detection mechanism that skips partial order of a coordinate or a Z-value with consecutive 0s in the front,avoiding unnecessary iterative *** propose order-parallel and point-parallel OpenMP-based algorithms to exploit the modern multi-core *** results on discrete,skewed,and real datasets indicate that our point-parallel algorithms can be up to 12.6×faster than the existing algorithms.

关键词： Z-curve lookup table OpenMP bit detection mechanism

胸腺肽对晚期宫颈癌化疗后骨髓抑制患者的疗效

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中国临床研究 2020年第12期33卷 1653-1656页

作者：曹晖梁慧霞厦门大学附属翔安医院妇产科福建厦门361101 中国人民解放军联勤保障部队第910医院妇产科福建泉州362008

目的探讨胸腺肽治疗晚期宫颈癌化疗后骨髓抑制对患者生存期以及生存质量的影响。方法选取2012年7月至2015年6月接受手术及同步化疗的晚期宫颈癌患者96例,按照治疗方法分为观察组(n=48)和对照组(n=48)。对照组给予同步化疗;观察组给予... 详细信息

目的探讨胸腺肽治疗晚期宫颈癌化疗后骨髓抑制对患者生存期以及生存质量的影响。方法选取2012年7月至2015年6月接受手术及同步化疗的晚期宫颈癌患者96例,按照治疗方法分为观察组(n=48)和对照组(n=48)。对照组给予同步化疗;观察组给予同步化疗+胸腺肽治疗。治疗4周后比较治疗效果,记录治疗前、治疗4周后免疫球蛋白G(Ig)G、IgA、IgM和生活质量、C反应蛋白(CRP)、自然杀伤细胞(NK)的变化,对比两组患者治疗后骨髓抑制情况以及生存率。结果治疗后,观察组总有效率高于对照组(85.42% vs 62.50%,P<0.05);治疗后,两组患者IgG、IgA、IgM等水平均有升高,且观察组明显高于对照组(P<0.05,P<0.01);治疗后,两组患者躯体功能、情绪功能、认知功能、整体生活质量指标评分均有升高,且观察组明显高于对照组(P<0.05,P<0.01)。治疗后,两组患者CRP水平均有降低,观察组低于对照组(P<0.05,P<0.01);治疗后,两组患者NK细胞水平均有升高,且观察组高于对照组(P<0.05,P<0.01);治疗后,观察组患者骨髓抑制改善效果优于对照组(P<0.01);对患者进行为期3年随访,观察组患者1年、2年、3年生存率均高于对照组(P<0.05)。结论胸腺肽辅助化疗治疗晚期宫颈癌,可调节患者免疫功能,抑制炎性因子表达,减轻患者骨髓抑制,提高疗效和患者生活质量,改善患者生存率。

关键词：胸腺肽晚期宫颈癌骨髓抑制生存质量

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-Cui Mao hui-Lin Jiang Bao-xia Dong Yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： CO 2 methanation Metal hydride Ni catalysts Carbonate Metal-carbonate interface

Metal-organic frameworks with dinuclear metal centers for synergistically boosting CO2 photoreduction

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Science China Chemistry 2025年第1期68卷 201-208页

作者： hui-Feng Wang Wen-Jie Shi Yu-Xin Yang Bao-xia Dong Tong-Bu Lu Di-Chang Zhong School of Chemistry and Chemical Engineering Yangzhou University Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology

Dinuclear metal synergistic catalysis （DMSC） has been proved powerful in boosting CO2reduction,while this has not been achieved in heterogeneous catalysts with long-range order *** this study,we,by introduction of metal catalytic centers into an indium-based metal-organic framework （MOF）,obtained a series of isostructural In-MOFs,including three MOFs with mononuclear metal catalytic center （M-In）,three MOFs with dinuclear homometallic catalytic centers （MM-In）,and three MOFs with dinuclear heterometallic catalytic centers (MM’-In,M/M’=Co（II）,Ni（II）,Zn（II）).It was found that all these MOFs can serve as catalysts for photochemical CO2reduction to *** with M-In,the catalytic activities of MM-In were obviously enhanced,and that of MM’-In was further significantly *** example,the CO yield of Co Zn-In reaches a record value of 12,700μmol g-1h-1,which is 4.0,8.1,9.4,and 18.6-fold higher than that of Co Co-In,Zn Zn-In,Co-In,and Zn-In,***,the catalytic activities of Co Ni-In and Ni Zn-In also show different fold increase than those of corresponding dinuclear homometallic and mononuclear metallic *** results of control experiments and theoretical calculation reveal that the higher catalytic activities of MM-In over M-In can be ascribed to the DMSC effect,and the higher catalytic activity of MM’-In over MM-In can be ascribed to the strengthened DMSC *** work reveals the relationship between DMSC effect and bimetal centers in CO2reduction,which provides new insights into the DMSC and paves a new way to design highly active catalysts for photochemical CO2reduction.

关键词： metal-organic frameworks dinuclear metal centers synergistic catalysis CO2 reduction photocatalysis

Vector meson's spin alignments in high energy reactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 5-20页

作者： Jin-hui Chen Zuo-Tang liang Yu-Gang Ma Xin-Li Sheng Qun Wang Key Laboratory of Nuclear Physics and Ion-beam Application (MoE) Institute of Modern PhysicsFudan University Institute of Frontier and Interdisciplinary Science Key Laboratory of Particle Physics and Particle Irradiation (MOE)Shandong University INFN-Firenze Department of Modern Physics University of Science and Technology of China School of Mechanics and Physics Anhui University of Science and Technology

The global spin alignment of vector mesons has been observed by the STAR collaboration at the Relativistic Heavy Ion Collider （RHIC） at Brookhaven National Laboratory （BNL）.It provides a unique opportunity to probe the correlation between the polarized quark and antiquark in the strongly coupled quark-gluon plasma （sQGP） produced in relativistic heavy ion collisions,opening a new window to explore the properties of s *** addition,spin alignments of vector mesons have also been observed in other high-energy particle collisions such as e+e-annihilations at high energies where hadron production is dominated by quark fragmentation *** results obtained are quite different from those obtained in heavy ion collisions where quark coalescence/combination mechanism dominates suggesting strong dependence on hadronization *** comprehensive studies in different hadronization processes are *** this article,we present a brief review of theoretical and experimental advances in the study of vector meson’s spin alignments in a variety of high-energy particle collisions,with emphasis on hadronization mechanisms.

关键词： vector meson spin alignment global polarization relativistic heavy ion collisions fragmentation

五子衍宗丸联合脐疗对不育症患者精子质量及睾酮水平的影响

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中国临床研究 2020年第3期33卷 401-404页

作者：梁惠霞胡森安广东医科大学附属高明医院检验科广东佛山528500

目的探讨五子衍宗丸联合脐疗对不育症患者精子质量及睾酮水平的影响。方法入选2017年1月至2018年12月广东医科大学附属高明医院收治的男性不育患者186例,随机分成2组,对照组单纯采用五子衍宗丸治疗;联合组在对照组治疗的基础上联合脐疗... 详细信息

目的探讨五子衍宗丸联合脐疗对不育症患者精子质量及睾酮水平的影响。方法入选2017年1月至2018年12月广东医科大学附属高明医院收治的男性不育患者186例,随机分成2组,对照组单纯采用五子衍宗丸治疗;联合组在对照组治疗的基础上联合脐疗施治。60 d为一个疗程,共两个疗程,观察比较两组治疗后疗效,检测两组患者治疗前及治疗每个疗程后精液质量常规参数和血清睾酮水平及精浆生化中的超氧化物歧化酶(SOD)、α-糖苷酶、果糖、锌(Zn)和镉(Cd)等指标。结果联合组治疗后总有效率为83.87%,对照组总有效率为55.92%,两组之间有统计学差异(P0.05)。结论五子衍宗丸联合脐疗能显著改善精子、精浆质量及提高血清睾酮水平,对妊娠率的提升起着重要的作用。

关键词：五子衍宗丸脐疗不育睾酮精子质量

Ag_2V_4O_(11)纳米线的制备及光吸收性能研究

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人工晶体学报 2011年第1期40卷 229-232页

作者：张绍岩李英梁慧霞郧海丽石家庄学院化工学院石家庄050035

以Ag2O和V2O5为原料,采用水热法合成了Ag2V4O11纳米线。采用X射线衍射(XRD)和场发射扫描电子显微镜(FE-SEM)对样品的结构及形貌进行了表征,并采用紫外-可见光吸收法(UV-vis)测定了样品的光吸收性能。紫外-可见光吸收测试显示Ag2V4O11纳... 详细信息

以Ag2O和V2O5为原料,采用水热法合成了Ag2V4O11纳米线。采用X射线衍射(XRD)和场发射扫描电子显微镜(FE-SEM)对样品的结构及形貌进行了表征,并采用紫外-可见光吸收法(UV-vis)测定了样品的光吸收性能。紫外-可见光吸收测试显示Ag2V4O11纳米线具有较宽的紫外-可见光吸收范围,通过计算得出Ag2V4O11纳米线的光学带隙为1.77 eV。

关键词： Ag2V4O11纳米线紫外-可见吸收带隙