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Almost split sequences for symmetric non-semisimple Hopf algebras

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第6期7卷 1077-1083页

作者： SHI mei-hua Department of Mathematics Zhejiang Education Institute Hangzhou 310012 China

We first prove that for a finite dimensional non-semisimple Hopfalgebra H, the trivial H-module is not projective and so the almost split sequence ended with k exists. By this exact sequence, for all indecomposable H-module X, we can construct a special kind of exact sequence ending with it. The main aim of this paper is to determine when this special exact sequence is an almost split one. For this aim, we restrict H to be tmimodular and the square of its antipode to be an inner automorphism. As a special case, we give an application to the quantum double D（H）=（H^op）^＊∞ H） of any non-semisimple Hopf algebra.

关键词： Indecomposable Unimodular Almost split sequences Symmetric non-semisimple Hopfalgebras

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Communications in Theoretical Physics 2009年第2期51卷 279-282页

作者： LI hua-mei Department of Physics Zhejiang Normal University Jinhua 321004 China

This paper analyzes spatial grey self-similar solitary waves propagation and collision in graded-index nonlinear waveguide amplifiers with self-focusing and self-defocusing Kerr nonlinearities. New exact self-similar solutions are found using a novel transformation and their main features are investigated by using direct computer simulations.

关键词： grey self-similar solitary wave inhomogeneous nonlinear media collision

Synthesis and Crystal Structure of 1-(N,N-Di-(p-toluenesulfonyl))-amino-2-(N'-p-toluenesulfonyl)-amino-3,5-dinitrobenzene

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Chinese Journal of Structural Chemistry 2007年第3期26卷 309-313页

作者： CHEN hua-mei LIN Hai LIN hua-Kuan Department of Chemistry Nankai University Tianjin 300071 China State Key Laboratory of Functional Polymer Materials for Absorption and Separation Nankai University Tianjin 300071 China

The title compound, 1-（N,N-di-（p-toluenesulfonyl））-amino-2-（N＇-p-toluenesulfonyl）- amino-3,5-dinitrobenzene, was synthesized and structurally determined by single-crystal X-ray diffraction method. It crystallizes in orthorhombic, space group Pna21 with a = 13.723（2）, b = 25.354（4）, c = 8.6565（12） A, V= 3011.9（8） A^3, Z = 4, Mr = 660.68, F（000） = 1368, Dc = 1.457 g/cm^3, μ = 0.309, the final R = 0.0609 and wR = 0.1042. The H atom of N2-H group, which is the unique recognition site to anion, is enveloped by two oxygen atoms and one benzene from two and one p-toluenesulfonyl moieties, respectively.

关键词： sulfonylamide anion recognition receptor crystal structure

Extremal Graphs with Respect to Matching Energy for Random Six-membered Ring Spiro Chains

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Acta Mathematicae Applicatae Sinica 2019年第2期35卷 319-326页

作者： hua-mei CHEN Yan LIU School of Mathematical Sciences South China Normal University

Gutman and Wagner(in the matching energy of a graph, Disc. Appl. Math., 2012) defined the matching energy of a graph and pointed out that its chemical applications go back to the 1970 s. Now the research on matching energy mainly focuses on graphs with pendent vertices and only a few papers reported the progress on matching energy of graphs without pendent vertices. For a random six-membered ring spiro chain, the number of k-matchings and the matching energy are random variables. In this paper, we determine the extremal graphs with respect to the matching energy for random six-membered ring spiro chains which have no pendent vertices.

关键词： matching energy random six-membered ring spiro chains

Respiratory training interventions improve health status of heart failure patients: A systematic review and network meta-analysis of randomized controlled trials

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World Journal of Clinical Cases 2019年第18期7卷 2760-2775页

作者： mei-hua Wang mei-Ling Yeh School of Nursing National Taipei University of Nursing and Health Sciences

BACKGROUND Prior studies indicate that doing breathing exercises improves physical performance and quality of life (QoL) in heart failure patients. However, these effects remain unclear and contradictory. AIM To determine the effects of machine-assisted and non-machine-assisted respiratory training on physical performance and QoL in heart failure patients. METHODS This was a systematic review and network meta-analysis study. A literature search of electronic databases was conducted for randomized controlled trials (RCTs) on heart failure. Respiratory training interventions were grouped as seven categories: IMT_Pn (inspiratory muscle training without pressure or < 10% maximal inspiratory pressure, MIP), IMT_Pl (inspiratory muscle training with low pressure, 10%-15% MIP), IMT_Pm (inspiratory muscle training with medium pressure, 30%-40% MIP), IMT_Ph (inspiratory muscle training with high pressure, 60% MIP or MIP plus aerobics), Aerobics (aerobic exercise or weight training), Qi_Ex (tai chi, yoga, and breathing exercise), and none. The four outcomes were heart rate, peak oxygen uptake (VO2 peak), 6-min walking distance test (6MWT), and Minnesota Living with Heart Failure QoL. The random-effects model, side-splitting model, and the surface under the cumulative ranking curve (SUCRA) were used to test and analyze the data. RESULTS A total of 1499 subjects from 31 RCT studies were included. IMT_Ph had the highest effect sizes for VO2 peak and 6MWT, IMT_Pm highest for QoL, and Qi_Ex highest for heart rate. Aerobics had the second highest for VO2 peak, Qi_Ex second highest for 6MWT, and IMT_Ph second highest for heart rate and *** This study supports that high- and medium-intensity machine-assisted training improves exercise capacity and QoL in hospital-based heart failure patients. After hospital discharge, non-machine-assisted training continuously improves cardiac function.

关键词： Heart failure Network meta-analysis Respiratory training Cardiac function Exercise capacity Quality of life

Efficacy and safety of intravenous tranexamic acid in total shoulder arthroplasty:A meta-analysis

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World Journal of Clinical Cases 2023年第13期11卷 2992-3001页

作者： hua-mei Deng The Second Affiliated Hospital Guangzhou University of Chinese MedicineGuangzhou 510120Guangdong ProvinceChina

BACKGROUND Total shoulder arthroplasty(TSA)results in a large amount of perioperative blood loss due to severe *** To investigate the safety and efficacy of intravenous tranexamic acid(TXA)in *** We searched the PubMed,Cochrane Library,Embase and Web of Science databases for randomized controlled trials(RCTs)on the use of TXA in *** all the results were checked and assessed by Reference Citation Analysis(https://***/).A meta-analysis was performed with Review Manager 5.3 to calculate the odds ratio(OR)or weighted mean difference(WMD)of related outcome *** A total of 5 RCTs with level 1 evidence were *** were 369 cases,with 186 in the TXA group and 183 in the placebo *** meta-analysis showed that TXA can significantly reduce total blood loss during the perioperative period[WMD=-249.56,95%confidence interval(CI):-347.6 to-151.52,P<0.0001],and the incidence of adverse reactions was low(OR=0.36,95%CI:0.16-0.83,P=0.02).Compared with the placebo group,the TXA group had significantly less total haemoglobin loss(WMD=-34.39,95%CI:-50.56 to-18.22),less haemoglobin fluctuation before and after the operation(WMD=-0.6,95%CI:-0.93 to-0.27)and less 24-h drain output(WMD=-136.87,95%CI:-165.87 to-106.49).There were no significant differences in the operation time(P=0.11)or hospital length of stay(P=0.30)between the two *** The application of intravenous TXA in the perioperative period of TSA can significantly reduce the total volume of perioperative blood loss and reduce the incidence of adverse reactions,so TXA is worthy of widespread clinical use.

关键词： Intravenous Tranexamic acid Total shoulder arthroplasty Placebo Meta-analysis

Heavy metals pollution in poultry and livestock feeds and manures under intensive farming in Jiangsu Province, China

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Journal of Environmental Sciences 2004年第3期16卷 371-374页

作者： CANGLong WANGYu-jun ZHOUDong-mei DONGYuan-hua StateKeyLaboratoryofSoilandSustainable AgricultureInstituteofSoilScienceChineseAcademyofSciencesNanjing210008China

The heavy metals pollution in poultry and livestock feeds and manures under intensive farming in Jiangsu Province was investigated. 97 feed and manure samples were sampled from 31 farming plants in 10 major cities of Jiangsu. 14 metals, including Zn, Cu, Pb, Cd, Cr, Ni, Mo, Mn, Ba, Co, Sr, Ti, As and Hg, were analyzed after samples acid digestion. The results showed that the most feed samples contained high concentration of metals exceeding National Hygienical Standard for Feeds. Meanwhile, it was found that Cu, Zn, Pb, Cd and Cr concentrations in animal manures were also high, for example, Cu concentration in a manure sample reached to as much as 1726 3 mg/kg. Heavy metals loading quantities in soil per year were then calculated when metals contaminated organic fertilizers were applied, and its effects on soil environmental quality were further evaluated.

关键词： heavy metal intensive farming feed manure Jiangsu Province

The interplay of single-particle and collective motions in the low-lying states of ^(21)_(A)Ne with quadrupole-octupole correlations

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Science China(Physics,Mechanics & Astronomy) 2023年第5期66卷 120-129页

作者： HaoJie Xia XianYe Wu hua mei JiangMing Yao School of Mechanical and Electrical Engineering Handan UniversityHandan 056005China College of Physics and Communication Electronics Jiangxi Normal UniversityNanchang 330022China School of Physics and Astronomy Sun Yat-sen UniversityZhuhai 519082China Data Analysis and Research LLC Okemos 48864USA

The beyond mean-field approach for low-lying hypernuclear states is extended by mixing the configurations associated with both single-particle and quadrupole-octupole collective excitations within the generator coordinate method based on a covariant den-sity functional *** method is demonstrated in the application to the low-lying states of 21ΛNe,where the configurations with theΛhyperon occupying the first(Λ_(s))and second(Λ_(p))lowest-energy states are *** results indicate that the positive-parity states are dominated by theα+^(12)C+α+Λ_(s) *** contrast,the low-lying negative-parity states are domi-nated by a strong admixture ofα+16O+Λ_(s) structure andα+12C+α+Λ_(p) structure due to the inclusion of octupole *** a result,the low-lying negative-parity states become much lower than what is expected from the previous studies without the mixing,and the electric multipole transition strengths are significantly quenched.

关键词： spectroscopy of hypernucleus octupole deformation cluster structure covariant density functional theory

Beyond mean-field approach for pear-shaped hypernuclei

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Science China(Physics,Mechanics & Astronomy) 2019年第4期62卷 57-64页

作者： HaoJie Xia XianYe Wu hua mei JiangMing Yao School of Mechanical and Electrical Engineering Handan University College of Physics and Communication Electronics Jiangxi Normal University Department of Physics and Astronomy University of North Carolina Chapel Hill Department of Physics Tohoku University FRIB/NSCL Michigan State University

We develop both relativistic mean field and beyond approaches for hypernuclei with possible quadrupole-octupole deformation or pear-like shapes based on relativistic point-coupling energy density functionals. The symmetries broken in the mean-field states are recovered with parity, particle-number and angular momentum projections. We take_Λ^(21)Ne as an example to illustrate the method, where the Λ hyperon is put on one of the two lowest-energy orbits(labeled as Λ_s, Λ_p), respectively. We find that the Λ hyperon in both cases disfavors the formation of a reflection-asymmetric molecular-like^(16)O+α structure in^(20)Ne, which is consistent with the Nilsson diagram for the hyperon in(β_2, β_3) deformation plane. In particular, we show that the negative-parity states with the configuration^(20)Ne(K~π= 0^-)  Λ_s are close in energy to those with the configuration^(20)Ne(K~π= 0^+)Λ_p, even though they have very different structures. The Λ_s(Λ_p) becomes more and more concentrated around the bottom(top) of the"pear" with the increase of octupole deformation.

关键词： hypernucleus relativistic mean field octupole deformation cluster structure