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Single Charged Top-Pion Production at the Next Generation e^＋e^- Colliders

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Communications in Theoretical Physics 2005年第1期43卷 133-138页

作者： WANGXue-Lei DULin-Lin XUWen-Na CollegeofPhysicsandInformationEngineering HenanNormalUniversityXinxiang453002China

The single charged top-pion production processes e~+ e~- → tbΠ_t~- and e~+e~- → W~+Π_t~- are studied in the framework of top-color-assisted technicolor (TC2) model. Ourstudies show that the cross section σ(e~+ e~- → tbΠ_t~-) Teaches the level of tens of fb andσ(e~+ e~- → W~+Π_t~-) reaches the level of a few fb. With the yearly integrated luminosity of ￡～ 500 fb~(-1) expected at the planned colliders, one could collect thousands of charged top-pion ofevents via the process e~+ e~- → tbΠ_t~- and hundreds of events via the process e~+ e~- →W~+Π_t~-. The flavor changing decay mode Π_t~- → bc is the best channel to detect chargedtop-pion due to the clean SM background. With a large number of events and the clean background, thecharged top-pion should be observable at the planned colliders. Therefore, our studies in thispaper can help us to search for charged top-pion, and furthermore, to test the TC2 model.

关键词： top-pion top-color-asisted technicolor model linear colliders

First-Principles Studies for the Electronic Structures of Diluted Magnetic Semiconductors （Ga, Fe）As

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Communications in Theoretical Physics 2003年第4X期40卷 499-502页

作者： WEIShu-Yi WANGTian-Xing YANGZong-Xian MALi DepartmentofPhysics HenanNormalUniversityXinxiang453002China

First-principles LMTO-ASA band calculations are performed for Ga1-xFezAs (x = 1, 1/4, 1/8) by assuming supercell structures. It is found that the antiferromagnetic (AFM) state is stable for x = 1/4. For x = 1/8, ferromagnetic (FM) state is more stable than AFM state, and no stable magnetic state exists for x = 1. In both the cases the magnetic moments of As and Ga atoms are parallel to those of the nearest Fe atoms due to the p-d hybridization. Fhrther, the band structure shows rather localized Fe 3d state in the gap, and the parallel polarization is confined rather in the vicinity of Fe site.

关键词：电子带计算薄磁性半导体铁磁性镓砷铁计算方法电子结构铁磁结构

Study on Charged Top-Pion Decay Processes

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Communications in Theoretical Physics 2004年第5期41卷 737-740页

作者： WANGXue-Lei XUWen-Na DULin-Lin CollegeofPhysicsandInformationEngineering HenanNormalUniversityXinxiang453002China

In the framework of top-color assisted technicolor (TC2) theory, we study the four decay processes of charged top-pion, i.e., . The decay branching ratio of these modes are calculated. The results show that the main decay channels of charged top-pion are the tree level modes: and . Light is easier to be detected than heavy one at future coliders. So, the study provides us with some useful informations to search for charged top-pion.

关键词： top-pion electroweak symmetry breaking decay processes

Cooperation between ligninolytic enzymes produced by superior mixed flora

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Journal of Environmental Sciences 2005年第4期17卷 620-622页

作者： WANGHai-lei LIZong-yi GUOWei-yun WANGZhen-yu PANFeng CollegeofLifeSciences HenanNormalUniversityXinxiang453002China ResearchCenterforEco-EnvironmentalSciences ChineseAcademyofSciencesBeijing1000-85China HenanKeyLaboratoryforEnvironmentalPollutionControl HenanNormalUniversityXinxiang453002China

Since the ability to degrade lignin with one kind of white-rot fungi or bacteria was very limited, superior mixed flora's ability to degrade lignin was investigated by an orthogonal experiment in this paper. The results showed that superior mixed flora reinforced the ability to degrade lignin, the degradation rates of both sample 9 and 10 were beyond 80% on the day 9 The cooperation between lignin peroxidase(LiP), Mn-dependent peroxidase(MnP) and laccase (Lac) for lignin degradation was also studied. By examining the activities of three enzymes produced by superior mixed flora, it was found that Lac was a key enzyme in the process of biological degradation of lignin but Lip was not; the enzyme activity ratios of Lac/MnP and Lac/LiP were significantly correlative with the degradation rate of lignin at the 0 01 level; and the ratio of MnP/LiP was an important factor affecting the degradation rate of lignin.

关键词： white-rot fungi lignin peroxidase Mn-dependent peroxidase laccase orthogonal experiment

A Novel Green Synthesis of Quinolines through Acid-catalyzed Friedlander Reaction in Ionic Liquids

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Chinese Chemical Letters 2004年第10期15卷 1170-1172页

作者： XinYingZHANG XueSenFAN JianJiWANG YanZhenLI SchoolofChemicalandEnvironmentalSciences KeyLaboratoryofEnvironmentalScienceandEngineeringforCollegesandUniversitiesofHenanProvinceHenanNormalUniversityXinxiang453002

Quinoline derivatives were efficiently prepared through acid-catalyzed Friedlander reaction in ionic liquid ([bmim][BF4]). It is shown that the proposed method is operationally simple and environmentally benign in tha... 详细信息

关键词： Quinoline derivatives Friedlander synthesis ionic liquid.

An Efficient and Green Procedure for the Preparation of gem-Dicar- boxylates from Aldehydes Catalyzed by Fe_2(SO_4)_3·xH_2O

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Chinese Chemical Letters 2004年第5期15卷 508-510页

作者： LingJunLI XinYingZHANG GuiShengZHANG SchoolofChemicalandEnvironmentalSciences HenanNormalUniversityKeyLaboratoryofEnvironmentalScienceandEngineeringofHenanEducationDepartmentXinxiang453002

An efficient and environmentally benign conversion of aldehydes into the corresponding gem-dicarboxylates was realized by using hydrated ferric sulfate as a heterogeneous catalyst. In addition to its high efficiency,... 详细信息

关键词： gem-Dicarboxylates hydrated ferric sulfate protection of aldehydes green chemistry.

Shedding of TNFR1 in regenerative liver can be induced with TNF α and PMA

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World Journal of Gastroenterology 2002年第6期8卷 1129-1133页

作者： MinXia Saho-BaiXue Cun-ShuanXu CollegeofLifeScience HenanNormalUniversityXinxiang453002 CollegeofLifeScience HenanNormalUniversityXinxiang453002HenanProvinceChina TheInstituteofCellResearch BeijingNormalUniversityBeijing100875

AIM: Liver regeneration is associated with apoptosis of hepatocytes, which is mediated via tumor necrosis factor receptor 1(TNFR1). The shedding of TNFR1 in liver regeneration and its mechanism to regulate this shedding were ***: The shedding of TNFR1 in liver regeneration and changes of TNF-α, PMA and plasma membrane purified from hepatocytes on this shedding process were measured with Western blot. Then, the relationship between TNFR1 shedding and apoptosis of hepatocytes induced by TNFα was studied by detecting apoptotic ***: The shedding of TNFR1 began at 4 hours and terminated before 2 months after partial hepatectomy. In culture system, serum from rats at 36 h after partial hepatectomy could also promote this shedding process. With the stimulation of TNF α, PMA or purified plasma membrane from hepatocytes at 36 h after partial hepatectomy or from hepatocytes treated with TNF α for 2 h, membranous TNFR1 was also shed. With the stimulation of both TNF α and plasma membrane from hepatocytes affected with TNF α for 2 hor from hepatocytes at 36 h after partial hepatectomy, apoptotic index of hepatocytes decreased from 21% to 7.52 % and 8.45 %, respectively. PMA could also reduce apoptotic index to 13.67 %. This descent occurred in hepatocytes cultured in serum from rats at 36 h after partial hepatectomy too,but not in serum from rats at 2 months after partial hepatectomy and sham-operated ***: Shedding of TNFR1 may help reduce apoptosis of hepatocytes induced by TNFα. Membraneanchored metalloprotases could play a role in shedding membranous TNFR1. At the same time, PKC may take part in regulation of this shedding process.

关键词： TNFR1 PMA 肝切除肝再生肝细胞凋亡肝细胞膜受体脱落

THE CORRESPONDENCE BETWEEN RINDLER RESPONSE AND THERMAL RESPONSE

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Chinese Physics Letters 1990年第4期7卷 163-165页

作者： LIU Zixin WANG Mian XIONG Yongjian Department of Physics Henan Normal UniversityXinxiang 453002

The thermal response of static monopole particle detector in the presence of boundaries are *** put forward a weak correspondence principle between Rindler response and thermal response and illustrate it in a number o... 详细信息

关键词： correspondence thermal illustrate

Indirect Determination of CTMAB with Sodium Chloride and Ammonium Thiocyanate by Floatation and Separation of Zinc

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Chinese Chemical Letters 2003年第3期14卷 290-293页

作者： Quan Min LI Hai Xin BAI 等 CollegeofChemistryandEnvironmentalScience HenannormaluniversityKeyLaboratoryofEnvironmentalScienceandEngineeringEducationCommissionofHenanProvinceXinxiang453002 CollegeofChemis

A new method for indirect determination of cetyl-trimethyl ammonium bromide (CTMAB) with NaCl and NH4SCN by floatation and separation of zinc has been studied. The study shows that Zn(II) can associate with NH4SCN and CTMAB to form insoluble ternary ion-association complex, and the precipitate can float on the surface of the liquid phase. A good linear relationship is observed between the floatation yield (E%) of Zn(II) and the amount of CTMAB. On the ground, CTMAB can be indirectly determined by determining E% of Zn(II). The results were satisfactory.

关键词： Cetyl-trimethyl ammonium bromide ammonium thiocyanate floatation zinc.