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Factorization of simple modules for certain restricted two-parameter quantum groups

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Frontiers of Mathematics in China 2013年第1期8卷 169-190页

作者： min li Xiuling wang School of Mathematical Sciences Nankai University Tianjin 300071 China

We study the representations of the restricted two-parameter quantum groups of types B and G. For these restricted two-parameter quantum groups, we give some explicit conditions which guarantee that a simple module can be factored as the tensor product of a one-dimensional module with a module that is naturally a module for the quotient by central group-like elements. That is, given θ a primitive eth root of unity, the factorization of simple uθy,θz（g）-modules is possible, if and only if （2（y - z）,e） = 1 for 9 = SO2n＋l; （3（y- z）,g） = 1 for 9 = G2.

关键词： Hopf algebra Drinfel'd double restricted two-parameter quantumgroup

Congruence Triples on Regular Semigroups and Their Generalizations

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Acta Mathematica Sinica,English Series 2011年第8期27卷 1611-1620页

作者： li min wang Hui Yuan YANG School of Mathematics South China Normal University Guangzhou 510631 P. R. China

In this paper, we introduce the concept of VT-congruence triples on a regular semigroup S and show how such triples can be constructed by nsing the equivalences on S/L, S/R and the special congruences on S. Also, such congruence triples are characterized so that an associated congruence can be uniquely determined by a given congruence triple. Moreover, we also consider the VH-congruence pairs on an orthocryptogroup.

关键词： Regular semigroup orthodox semigroup orthocryptogroup congruence normal equivalence

The K°-relation on the Congruence Lattice of a Regular Semigroup with an Inverse Transversal

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Acta Mathematica Sinica,English Series 2012年第5期28卷 1061-1074页

作者： Ying Ying FENG li min wang Department of Information Science and Mathematics Foshan University School of Mathematics South China Normal University

Let S be a regular semigroup with an inverse transversal S° and C（S） the congruence lattice of S. A relation K° on C（S） is introduced as follows： if p, θ∈ C（S）, then we say that p and 0 are K°-related if Ker pO = Ker θ°, where p°= p｜s°. Expressions for the least and the greatest congruences in the same K°-class as p are provided. A number of equivalent conditions for K° being a congruence are given.

关键词： Regular semigroup inverse transversal congruence K°-relation

Self-assembled supramolecular networks at interfaces: Molecular immobilization and recognition using nanoporous templates

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Science China(Physics,Mechanics & Astronomy) 2011年第10期54卷 1739-1748页

作者： li min ZENG QingDao wang Chen National Center for Nanoscience and Technology (NCNST) Beijing 100190 China

In this review a series of organic-based open porous networks are discussed, in which hydrogen bonds play an important role in network formation. Using these open networks as molecular templates: 1) a wealth of functional guest species can be immo- bilized; 2) fullerene molecules can be separated and recognized; 3) photoisomerization reactions can be observed by STM; 4) 1D molecular arrays can be constructed; and 5) heterogeneous bilayer structures can be formed. It is envisioned that these su- pramolecular networks might be developed into a new family of useful soft frameworks for studies toward shape-selective ca- talysis, molecular recognition and host-guest supramolecular chemistry.

关键词： supramolecular networks molecular recognition scanning tunneling microscopy self-assembly

A novel aged mouse model of recurrent intracerebral hemorrhage in the bilateral striatum

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Neural Regeneration Research 2023年第2期18卷 344-349页

作者： li-min wang Zhi-Hua liu Hong-Lei Ren Xue-Mei Chen Jun-min wang Hui-min Cai li-Ping Wei Hui-Hong Tian Jian wang li-Juan wang The Second School of Clinical Medicine Southern Medical UniversityGuangzhouGuangdong ProvinceChina Department of Neurology Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangdong Neuroscience InstituteGuangzhouGuangdong ProvinceChina School of Medicine South China University of TechnologyGuangzhouGuangdong ProvinceChina Department of Neurology Tianjin Neurological InstituteTianjin Medical University General HospitalTianjinChina Department of Anatomy School of Basic Medical SciencesZhengzhou UniversityZhengzhouHenan ProvinceChina

The current animal models of stroke primarily model a single intracerebral hemorrhage(ICH)attack,and there is a lack of a reliable model of recurrent *** this study,we established 16-month-old C57 B L/6 male mouse models of ICH by injecting collagenaseⅦ-S into the left ***-one days later,we injected collagenaseⅦ-S into the right striatum to simulate recurrent *** results showed that mice subjected to bilateral striatal hemorrhage had poorer neurological function at the early stage of hemorrhage,delayed recovery in locomotor function,motor coordination,and movement speed,and more obvious emotional and cognitive dysfunction than mice subjected to unilate ral striatal *** findings indicate that mouse models of bilateral striatal hemorrhage can well simulate clinically common recurrent *** models should be used as a novel tool for investigating the pathogenesis and treatment targets of recurrent ICH.

关键词： animal model cognition impairment depression-like behavior dopaminergic neurons emotion intracerebral hemorrhage motor neurologic function recurrent intracerebral hemorrhage

Fabrication and property of high-performance Ag-Pb-Sb-Te system semiconducting thermoelectric materials

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Chinese Science Bulletin 2007年第7期52卷 990-996页

作者： ZHOU min li JingFengt wang Heng State Key Laboratory of New Ceramics and Fine Processing Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

High performance Ag-Pb-Sb-Te system thermoelectric bulk materials were fabricated by a combination of mechanical alloying (MA) and spark plasma sintering (SPS). Phase composition and microstructure of the resultant materials were investigated by X-ray diffraction (XRD) and scanning electron micros-copy (SEM) analysis. A special emphasis was paid to the effects of chemical composition, especially the Pb content on the thermoelectric properties of the Ag0.8Pb18+xSbTe20 samples, including electrical resistivity, Seebeck coefficient, power factor, thermal conductivity and dimensionless figure of merit. The present study reveals that the optimal composition of Ag0.8Pb18+xSbTe20 samples is Ag0.8Pb22.5SbTe20 and the maximum figure of merit (ZT) is 1.2 at 673 K.

关键词：半导体热电材料 Ag-Pb-Sb-Te系统制备性能

Polymorphisms of some cytokines and chronic hepatitis B and C virus infection

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World Journal of Gastroenterology 2009年第44期15卷 5610-5619页

作者： Qiu-Ju Gao Dian-Wu liu Shi-Yong Zhang min Jia li-min wang li-Hong Wu Shu-Yun wang li-Xin Tong Department of Epidemiology Public Health College Hebei Medical University Shijiazhuang 050017 Hebei Province China Department of Preventive Medicine Bethune Military Medical College of PLA Shijiazhuang 050081 Hebei Province China Institution of Epidemiology Center for Disease Prevention and Control of Shijiazhuang Shijiazhuang 050011 Hebei Province China Department of Biochemistry Detection the People's Hospital of Hebei Province Shijiazhuang 050071 Hebei Province China Center of liver Diseases the First Affiliated Hospital of Hebei Medical University. Shijiazhuang 050031 Hebei Province China

AIM： To study the relationship between the polymorphisms in some cytokines and the outcome of hepatitis B virus （HBV） and hepatitis C virus （HCV） infection. METHODS： Samples were obtained from 203 patients infected with HBV and/or HCV while donating plasma in 1987, and 74 controls were obtained from a rural area of North China. Antibodies to HBV or HCV antigens were detected by enzyme-linked imrnunoassay. The presence of viral particles in the serum was determined by nested reverse-transcriptase polymerase chain reaction （PCR）. Hepatocellular injury, as revealed by alanine aminotransferase （ALT） and aspartate aminotransferase level, was detected by a Beckman LX-20 analyzer. DNA was extracted from blood cells. Then, the single nucleotide polymorphisms of IL-2-330, IFN-γ＋874, IL-10-1082/-592 and IL-4-589 were investigated by restriction fragment length polymorphism-PCR or sequence specific primer-PCR.RESULTS： Persistent infection with HBV, HCV, and HBV/HCV coinfection was associated with IL-2-330 TT genotype and T allele, IFN-γ＋874 AA genotype, and IL-10-1082 AA genotype. The clinical outcome of HBV and/or HCV infection was associated with IL-2-330 TT genotype and T allele, IFN-γ＋874 AA genotype, and IL-10-1082 AA genotype. IL-2-330 GG genotype frequency showed a negative correlation with clinical progression, IL-10-1082 AA genotype frequency showed a positive correlation and IL-10-1082 AG genotype frequency showed a negative correlation with clinical progression. HCV RNA positive expression was associated with IL-10-1082 AA genotype and the A allele frequency. Abnormal serum ALT level was associated with IL-10-592 AC genotype frequency and IL-4-589 CC genotype, CT genotype, and the C allele. CONCLUSION： These results suggest that polymorphisms in some cytokine genes influence persistent HBV and HCV infection, clinical outcome, HCV replication, and liver damage.

关键词： Hepatitis B Hepatitis C Single nucleotide polymorphism Disease susceptibility Outcome studies Cytokines

Laves Phase in 22Cr-27Ni-2Ti-Al Austenitic Valve Steel

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Journal of Iron and Steel Research International 2016年第12期23卷 1303-1308页

作者： li-min wang Cheng-cheng XUE Gang YANG Zheng-dong liU Institute for Special Steels Central Iron and Steel Research Institute Faculty of Materials Science and Engineering Kunming University of Science and Technology

The Thermo Calc software was employed to calculate the equilibrium phase of 22Cr-27Ni-2Ti-Al austenitic valve steel, and the Laves phase in this steel was investigated after solid solution and aging by means of scanning electron microscopy （SEM）, transmission electron microscopy （TEM） and X- ray diffraction （XRD）. Results show that the microstructure of the experimental steel consists of γ, γ′, Laves and NbC. *** phases mainly precipitate on grain boundaries, with granular and fibrous morphologies. The size of the granular Laves phase is about 50-600 nm, and the fihrous Laves phase is composed of short strip Laves phases which are 300-600 nm in length and 50 150 nm in width. These two morphologies of Laves phase coarsen with increasing aging temperature, and this steel possesses the highest strength and hardness at aging temperature of 760 ℃.

关键词： 22Cr-27Ni-2Ti A1 austenitic valve steel microstructure Laves phase aging

Electrocatalytic characterization of Ni-Fe-TiO_(2) overlayers for hydrogen evolution reaction in alkaline solution

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Rare Metals 2023年第6期42卷 1858-1864页

作者： Jing-Guo Zhang Qiang Hu Shao-ming Zhang Shuo li Fei Ma Fan-Cai Chen Ya-ling wang li-min wang GRIPM Advanced Materials Co.Ltd General Research Institute for Nonferrous MetalsBeijing101407China General Research Institute for Nonferrous Metals Beijing100088China College of Chemistry and Chemical Engineering Hunan UniversityChangsha410082China

The Ni-Fe-TiO_(2) overlayers on mild steel strips were prepared by electrochemical *** layers were characterized morphologically by confocal laser scanning microscopy and scanning electron microscopy(SEM) coupled with energy-dispersive spectroscopy(EDS)*** layers exhibit a quasi-three-dimensional(3D)morphology in which the crystalline,TiO_(2),is *** activity of the Ni-Fe-TiO_(2) layers for the hydrogen evolution reaction(HER) was assessed by using pseudo-steady-state polarization curves and electrochemical impedance spectroscopy(EIS) in alkaline *** results were compared with the properties of Ni-Fe electrodes and used for determining the mechanism and kinetics of *** comparison with Ni-Fe electrodes,the synthesized Ni-Fe-TiO_(2) electrodes present higher catalytic activity for HER due to the increase in the real surface area and high intrinsic elec trocatalytic activity of titanium *** present study provides valuable insight for exploring practical applications of Ni-based alloys as hydrogen evolution electrodes.

关键词： Ni-Fe-TiO_(2) Hydrogen evolution reaction Electrodeposition Electrocatalytic activity