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Electron G-Factor Anomaly and the Charge Thickness
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作者 Arlen Young 《Journal of Modern Physics》 2024年第4期435-447,共13页
The electron g-factor relates the magnetic moment to the spin angular momentum. It was originally theoretically calculated to have a value of exactly 2. Experiments yielded a value of 2 plus a very small fraction, ref... The electron g-factor relates the magnetic moment to the spin angular momentum. It was originally theoretically calculated to have a value of exactly 2. Experiments yielded a value of 2 plus a very small fraction, referred to as the g-factor anomaly. This anomaly has been calculated theoretically as a power series of the fine structure constant. This document shows that the anomaly is the result of the electron charge thickness. If the thickness were to be zero, g = 2 exactly, and there would be no anomaly. As the thickness increases, the anomaly increases. An equation relating the g-factor and the surface charge thickness is presented. The thickness is calculated to be 0.23% of the electron radius. The cause of the anomaly is very clear, but why is the charge thickness greater than zero? Using the model of the interior structure of the electron previously proposed by the author, it is shown that the non-zero thickness, and thus the g-factor anomaly, are due to the proposed positive charge at the electron center and compressibility of the electron material. The author’s previous publication proposes a theory for splitting the electron into three equal charges when subjected to a strong external magnetic field. That theory is revised in this document, and the result is an error reduced to 0.4% in the polar angle where the splits occur and a reduced magnetic field required to cause the splits. 展开更多
关键词 Electron g-factor Anomaly Electron Charge Thickness Electron Positive Charge Electron Mass Thickness Electron Fractionalization Splitting the Electron Electron Compressibility factor
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外周血AGGF1与冠状动脉狭窄的关系
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作者 刘军锋 贾克刚 +6 位作者 车安琪 敬锐 李永姝 韩雪晶 石萍 吴萌 林文华 《检验医学》 CAS 2024年第5期423-428,共6页
目的探讨G补缀FHA域血管生成因子1(AGGF1)与冠状动脉狭窄的关系。方法选取2011年6月—2015年11月中国医学科学院北京协和医学院泰达国际心血管病医院冠状动脉狭窄患者116例。根据冠状动脉造影检查的结果,将116例患者分为病例组(狭窄>... 目的探讨G补缀FHA域血管生成因子1(AGGF1)与冠状动脉狭窄的关系。方法选取2011年6月—2015年11月中国医学科学院北京协和医学院泰达国际心血管病医院冠状动脉狭窄患者116例。根据冠状动脉造影检查的结果,将116例患者分为病例组(狭窄>50%,82例)和对照组(狭窄≤50%,34例)。采用非条件多因素逐步Logistic回归分析、受试者工作特征(ROC)曲线分别评价冠状动脉狭窄>50%的危险因素和AGGF1联合高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)对冠状动脉狭窄的诊断效能。对34例对照患者进行随访,评价AGGF1对发生主要不良心血管事件(MACE)的预测价值。结果病例组AGGF1水平显著低于对照组(P<0.001)。AGGF1下降是发生冠状动脉狭窄>50%的危险因素[比值比(OR)值为0.536,95%可信区间(CI)为0.368~0.782]。AGGF1联合HDL-C、LDL-C诊断冠状动脉狭窄的曲线下面积(AUC)为0.815。对照组随访期间高AGGF1患者无MACE发生,低AGGF1患者有6例发生MACE。结论外周血AGGF1下降是冠状动脉狭窄>50%的危险因素,AGGF1联合HDL-C、LDL-C对冠状动脉狭窄具有较高的诊断效能,AGGF1降低对冠状动脉狭窄≤50%远期发生MACE或有一定的预测价值。 展开更多
关键词 g补缀FHA域血管生成因子1 冠状动脉狭窄 冠状动脉造影检查
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FRACTIONAL (g, f)-FACTORS OF GRAPHS 被引量:7
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作者 刘桂真 张兰菊 《Acta Mathematica Scientia》 SCIE CSCD 2001年第4期541-545,共5页
This paper presents a new proof of a charaterization of fractional (g, f)-factors of a graph in which multiple edges are allowed. From the proof a polynomial algorithm for finding the fractional (g, f)-factor can be i... This paper presents a new proof of a charaterization of fractional (g, f)-factors of a graph in which multiple edges are allowed. From the proof a polynomial algorithm for finding the fractional (g, f)-factor can be induced. 展开更多
关键词 fractional (g f)-factor augmenting path gRAPH
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Energy Spectra,g Factors and Their Pressure—Induced and /or Thermal Shifts of SrTiO3:Cr^3+ and SrTiO3:Mn^4+ I:energy Spectra and g Factors at Normal Pressure 被引量:1
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作者 ZHANGJi-Ping MADong-Ping 《Communications in Theoretical Physics》 SCIE CAS CSCD 2001年第4期491-496,共6页
With the strong-field scheme and cubic bases, the complete d<SUP>3</SUP> energy matrix in a tetragonally distorted cubic-field has been constructed. By diagonalizing this matrix, the energy spectra of SrTi... With the strong-field scheme and cubic bases, the complete d<SUP>3</SUP> energy matrix in a tetragonally distorted cubic-field has been constructed. By diagonalizing this matrix, the energy spectra of SrTiO<SUB>3</SUB>:Cr<SUP>3+</SUP> and SrTiO<SUB>3</SUB>:Mn<SUP>4+</SUP> at normal pressure and various temperatures have been calculated. Correspondingly, the FORTRAN program calculating the g factor of the ground state has been worked out. By using the program and the wavefunction obtained from diagonalizing the complete energy matrix, the g factors of the ground state of SrTiO<SUB>3</SUB>:Cr<SUP>3+</SUP> and SrTiO<SUB>3</SUB>:Mn<SUP>4+</SUP> at normal pressure and room temperature have been evaluated. The calculated results are in good agreement with the optical-spectral and EPR experimental data. The comparison and analysis of the results of two crystals have been made. It is demonstrated that the covalency of the bonding between Mn<SUP>4+</SUP> and ligands (O<SUP>2-</SUP>) in SrTiO<SUB>3</SUB>:Mn<SUP>4+</SUP> is stronger than the one of the bonding between Cr<SUP>3+</SUP> and ligands (O<SUP>2-</SUP>) in SrTiO<SUB>3</SUB>:Cr<SUP>3+</SUP>. It is shown that the obtained wavefunctions and values of parameters are reasonable. 展开更多
关键词 crystal fields energy spectrum optical properties g factors COVALENCY
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ORTHOGONAL (g,f)-FACTORIZAFIONS OF BIPARTITE GRAPHS 被引量:3
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作者 刘桂真 董鹤年 《Acta Mathematica Scientia》 SCIE CSCD 2001年第3期316-322,共7页
Let G be a bipartite graph with vertex set V(G) and edge set E(G), and let g and f be two positive integer-valued functions defined on V(G) such that g(x) ≤ f(x) for every vertex x of V(G). Then a (g, f)-factor of G ... Let G be a bipartite graph with vertex set V(G) and edge set E(G), and let g and f be two positive integer-valued functions defined on V(G) such that g(x) ≤ f(x) for every vertex x of V(G). Then a (g, f)-factor of G is a spanning subgraph H of G such that g(x) ≤ dH(x) 5 f(x) for each x ∈ V(H). A (g, f)-factorization of G is a partition of E(G) into edge-disjoint (g, f)-factors. Let F = {F1, F2,…… , Fm } and H be a factorization and a subgraph of G, respectively. If F, 1 ≤ i ≤ m, has exactly one edge in common with H, then it is said that ■ is orthogonal to H. It is proved that every bipartite (mg + m - 1, mf - m + 1 )-graph G has a (g, f)-factorization orthogonal to k vertex disjoint m-subgraphs of G if 2-k ≤ g(x) for all x ∈ V(G). Furthermore, it is showed that the results in this paper are best possible. 展开更多
关键词 Bipartite graph (g f)-factor orthogonal factorization
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Mobilization of Peripheral Blood Stem Cells Using Regimen Combining Docetaxel with Granulocyte Colony-stimulating Factor in Breast Cancer Patients 被引量:4
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作者 Jing Yu Jun Ren +8 位作者 Li-jun Di Guo-hong Song Yu-lin Zhu Jie Zhang Xu Liang Li Che Han-fang Jiang Jun Jia Chun-rong Zhang 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2011年第1期49-53,共5页
Objective:To evaluate the effectiveness and safety of the mobilization of peripheral blood hematopoietic stem cells by combining docetaxel with granulocyte colony-stimulating factor(G-CSF) in breast cancer patients... Objective:To evaluate the effectiveness and safety of the mobilization of peripheral blood hematopoietic stem cells by combining docetaxel with granulocyte colony-stimulating factor(G-CSF) in breast cancer patients.Methods:A total of 57 breast cancer patients were treated with docetaxel 120 mg/m2.When the white blood cell(WBC) count decreased to 1.0×109/L,patients were given G-CSF 5-g/kg daily by subcutaneous injection until the end of apheresis.Peripheral blood mononuclear cells(MNC) were isolated by Cobe Spectra Apheresis System.The percentage of CD34+ cell was assayed by flow cytometry.Results:At a median 6 of days(range 3-8) after the administration of docetaxel,the median WBC count decreased to 1.08×109/L(range 0.20-2.31).The median duration of G-CSF mobilization was 3 days(range 2-7).The MNC collection was conducted 8-12 days(median 10 days) after docetaxel treatment.The median MNC was 5.35×108/kg(range 0.59-14.07),the median CD34+ cell count was 2.43×106/kg(range 0.16-16.69).The CD34+ cell count was higher than 1.00×106/kg in 47 of 57 cases(82.46%) and higher than 2.00×106/kg in 36 cases(63.16%).The CD34+ cell count was higher than 2.00×106/kg in 27 collections(23.68%).The MNC count and the CD34+ cell count were correlated with the bottom of WBC after docetaxel chemotherapy(r=0.364,0.502,P=0.005,0.000).The CD34+ cell count was correlated with the MNC count(r=0.597,P=0.000).The mobilization and apheresis were well tolerated in all patients.Mild perioral numbness and numbness of hand or feet were observed in 3 cases.No serious adverse events were reported.Conclusion:Mobilization of peripheral blood hematopoietic stem cell by combining docetaxel with G-CSF was effective and safety in breast cancer patients. 展开更多
关键词 DOCETAXEL granulocyte colony-stimulating factorg-CSF) MOBILIZATION Stem cell
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Determining the sign of g factor via time-resolved Kerr rotation spectroscopy with a rotatable magnetic field
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作者 谷晓芳 钱轩 +2 位作者 姬扬 陈林 赵建华 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第8期415-418,共4页
Time-resolved Kerr rotation spectroscopy is used to determine the sign of the g factor of carriers in a semiconductor material, with the help of a rotatable magnetic field in the plane of the sample. The spin precessi... Time-resolved Kerr rotation spectroscopy is used to determine the sign of the g factor of carriers in a semiconductor material, with the help of a rotatable magnetic field in the plane of the sample. The spin precession signal of carriers at a fixed time delay is measured as a function of the orientation of the magnetic field with a fixed strength B. The signal has a sine-like form and its phase determines the sign of the g factor of carriers. As a natural extension of previous methods to measure the (time-resolved) photoluminescence or time-resolved Kerr rotation signal as a function of the magnetic field strength with a fixed orientation, such a method gives the correct sign of the g factor of electrons in GaAs. Furthermore, the sign of carriers in a (Ga, Mn)As magnetic semiconductor is also found to be negative. 展开更多
关键词 g factor time-resolved Kerr rotation gallium arsenide rotatable magnetic field
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Energy Spectrum, g Factors, Strain-Induced Level-Splittings and R-Line Thermal Shift of MgO:V^(2+)
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作者 ZHANG Zheng-Jie MA Dong-Ping 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第8期511-516,共6页
Traditional ligand-field theory has to be improved by taking into account both pure electronic contribution and electron-phonon interaction one (including lattice-vibrational relaxation energy). By means of improved... Traditional ligand-field theory has to be improved by taking into account both pure electronic contribution and electron-phonon interaction one (including lattice-vibrational relaxation energy). By means of improved ligand-field theory, the R line, t^322T1 and t^322T2 lines, t^22(^3T1)e^4T2, t^22(^3T1)e^4T1 and t2e^2(^4A2)4T1 bands, g factors of t^32 ^4A2 and t32E, four strain-induced level-splittings and R-line thermal shift of MgO:V^2+ have been calculated. The results are in very good agreement with the experimental data. It is found that for MgO:V^2+, the contributions due to electronphonon interaction (EPI) come from the first-order term; the contributions from the second-order and higher terms are insignificant. In thermal shift of R line of MgO:V^2+, the temperature-dependent contribution due to EPI is dominant. The results obtained in this work may be used in theoretical calculations of other effects of EPI. 展开更多
关键词 improved ligand-field theory electron-phonon interaction energy spectrum strain-induced split-ting thermal shift g factor
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Theoretical Studies of Energy Spectra and g Factors of Cr3+-Doped YAl3(BO3)4
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作者 ZHANG Ji-Ping CHEN Gang ZHOU Hua-Bin 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第6期1121-1125,共5页
With the strong-field scheme and trigonal bases, by diagonalizing the complete d^3 energy matrix in a trigonally distorted cubic-field, the energy spectra and wavefunctions of YAl3(BO3)4:Cr^3+ have been calculated... With the strong-field scheme and trigonal bases, by diagonalizing the complete d^3 energy matrix in a trigonally distorted cubic-field, the energy spectra and wavefunctions of YAl3(BO3)4:Cr^3+ have been calculated. The rates of change of levels with respect to various parameters and the contributions to levels from various parameters are calculated, and the physical origins of various levels or splittings have been clearly and quantitatively shown. By using the wavefunctions obtained from diagonalizing the complete energy matrix, the g factors of the ground state of YAl3 (BO3 )4;Cr^3+ have been evaluated. The calculated results are in good agreement with the optical-spectral and EPR experimental data. It is demonstrated that the bonding between Cr^3+ and ligands (O^2-) is ionic. 展开更多
关键词 crystal fields energy spectrum g factor electronic paramagnetic resonance
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The g-factors and magnetic rotation in ^(82)Rb
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作者 袁大庆 郑永男 +9 位作者 左翼 范平 周冬梅 吴晓光 竺礼华 李广生 许国基 樊启文 张锡珍 朱升云 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第6期207-212,共6页
The g-factors of the intra-band states 12, 13, 14, 15 in a magnetic-rotational band built on the 11 state in S2Rb are measured for the first time by using a transient magnetic field-ion implantation perturbed angular ... The g-factors of the intra-band states 12, 13, 14, 15 in a magnetic-rotational band built on the 11 state in S2Rb are measured for the first time by using a transient magnetic field-ion implantation perturbed angular distribution (TMF-IMPAD) method. The magnetic-rotational band in ^82Rb is populated by the ^60Ni(27A1,4pn)^82Rb reaction, and the time-integral Larmor precessions are measured after recoil implantation into a polarized Fe foil. The calculation of g-factors is also carried out in terms of a semi-classical model of independent particle angular momentum coupling on the basis of the four-quasiparticle configuration π(99/2)^2 Оπ(p3/2, f5/2) О v (g9/2). The measured and calculated g-factors are in good agreement with each other. The g-factors and deduced shear angles decrease with the increase of spin along the band. This clearly illustrates the shear effect of a step-by-step alignment of the valence protons and neutrons in magnetic rotation. The semi-classical calculation also shows that the alignment of the valence neutron angular momentum is faster than that of the valence protons, which results in a decrease of g-factors with increasing spin. The present results provide solid evidence of the shear mechanism of magnetic rotation. 展开更多
关键词 S2Rb magnetic rotation g-factor TMF-IMPAD
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The Real Reason Why the Electron’s Bare g-Factor Is 2 Times Classical 被引量:1
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作者 Donald Bowen 《Journal of Modern Physics》 2016年第10期1200-1209,共10页
When analyzing an Electron’s orbit’s and movements, a “classical” bare g-factor of “1” must be used, but when analyzing just the Electron itself, a bare g-factor and gyromagnetic ratio of twice the “classical”... When analyzing an Electron’s orbit’s and movements, a “classical” bare g-factor of “1” must be used, but when analyzing just the Electron itself, a bare g-factor and gyromagnetic ratio of twice the “classical” value is needed to fit reality. Nobody has fully explained this yet. By examining the electromagnetic wave nature of the electron, it is possible to show a simple reason why its bare g-factor must be 2, without resorting to superluminal velocities or dismissing it as mystically intrinsic. A simple charged electromagnetic wave loop (CEWL) model of the electron that maintains the same electromagnetic wave nature as the high-energy photons from which electron-positron pairs form, will have exactly half of its energy in the form of magnetic energy who’s field lines are perpendicular to the direction of the charge rotation, which leads to the conclusion that only half of the electron’s electromagnetic mass is rotational mass, from which it is easy to calculate a bare g-factor of 2 using Feynman’s equation for the electron’s g-factor. 展开更多
关键词 Electron g-factor Magnetic Moment Spin Angular Momentum Magnetic Energy Charged Electromagnetic Wave Loop CEWL Pair Production general Relativity Mass de Broglie Wave
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The Influence of Mesoscopic Characteristics of Mineral Powders Fillers on the Rutting Factor(G^(*)/sinδ)of Asphalt Mortar
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作者 LIAO Jun DENG Tao +6 位作者 GONG Hongwei LI Zhen TANG Yongtao CHEN Kai SHI Lei QIAN Xiaolong DONG Qian 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2023年第5期1118-1125,共8页
This study aims to investigate the efiect of the mesoscopic characteristics of mineral powder fillers on the rutting resistance of asphalt mortar.Extraction and sieving tests were used to obtain the buton rock asphalt... This study aims to investigate the efiect of the mesoscopic characteristics of mineral powder fillers on the rutting resistance of asphalt mortar.Extraction and sieving tests were used to obtain the buton rock asphalt(BRA)ash with particle size smaller than 0.075 mm,which is consistent with that of the conventional mineral powder.The mesoscopic characteristics of BRA ash and conventional mineral powder were measured by SEM image analysis and the osmotic free pressure water method.Mesoscopic structure models of structural and free asphalts in mortar were obtained.The 70#matrix asphalt was used to prepare two kinds of asphalt mortar with BRA ash and conventional mineral powders fillers.The rutting factor of the two asphalt mortars was tested by dynamic shear test(DSR).Test results show that the ash extracted from BRA has a similar mesoscopic classification with the conventional mineral powder.Still,its fractal dimensions are larger,indicating the particles in BRA ash have more complex shapes and rougher surfaces,which is beneficial for forming structural asphalt and subsequently increasing the rutting factor(G*/sinδ),i e,improving the rutting resistance of the asphalt mortar. 展开更多
关键词 asphalt mortar mineral powder fllers mesoscopic characteristic rutting factor(g*/sinδ)
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(g,f)-FACTORS WITH SPECIAL PROPERTIES IN BIPARTITE (mg,mf)-GRAPHS
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作者 BianQiuju LiuGuizhen 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2004年第2期133-139,共7页
Let G be a bipartite graph and g and f be two positive integer-valued functions defined on vertex set V(G) of G such that g(x)≤f(x).In this paper,some sufficient conditions related to the connectivity and edge-connec... Let G be a bipartite graph and g and f be two positive integer-valued functions defined on vertex set V(G) of G such that g(x)≤f(x).In this paper,some sufficient conditions related to the connectivity and edge-connectivity for a bipartite (mg,mf)-graph to have a (g,f)-factor with special properties are obtained and some previous results are generalized.Furthermore,the new results are proved to be the best possible. 展开更多
关键词 CONNECTIVITY edge-connectivety bipartite (mg mf)-graph (g f)-factor vertex cover.
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PROPERTIES OF FRACTIONAL k-FACTORS OF GRAPHS
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作者 刘桂真 张兰菊 《Acta Mathematica Scientia》 SCIE CSCD 2005年第2期301-304,共4页
In this paper the properties of some maximum fractional [0, k]-factors of graphs are presented. And consequently some results on fractional matchings and fractional 1-factors are generalized and a characterization of ... In this paper the properties of some maximum fractional [0, k]-factors of graphs are presented. And consequently some results on fractional matchings and fractional 1-factors are generalized and a characterization of fractional k-factors is obtained. 展开更多
关键词 Fractional (g f)-factor. fractional matching fractional k-factor
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COMPUTING KARMARKAR'S PROJECTIONS QUICKLY BY USING MATRIX FACTORIZATION
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作者 J.R.BIRGE AND TANG HENGYONG(Department of industrial and Operations Engineering,The University of Michigan,Ann ArborMI 48109,U.S.A.)(Department of Mathematics and Computer, Shenyang Teacher’s College, Shenyang 110031, China.) 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 1996年第3期355-360,共6页
In this paper we compute Karmarkar's projections quickly using MoorePenrose g-inverse and matrix factorization. So the computation work of (ATD2A)-1is decreased.
关键词 Linear programming Karmarkar's algorithm Karmarkar's projection MoorePenrose g-inverse matrix factorization.
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Serological prevalence and risk factor analysis of hepatitis G virus infection in Hubei Province of China 被引量:8
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作者 De Ying Tian Dao Feng Yang +3 位作者 Ning Shao Xia Zheng Gang Zhang Hong Bo Lei Yuan Cheng Huang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2000年第4期585-587,共3页
Hepatitis G virus (HGV),also known as GB virus C, is a recently cloned virus which may be associated with human non A-E hepatitis[1,2] It is parenterally transmitted and usually coinfected or superinfected with hepat... Hepatitis G virus (HGV),also known as GB virus C, is a recently cloned virus which may be associated with human non A-E hepatitis[1,2] It is parenterally transmitted and usually coinfected or superinfected with hepatitis B or hepatitis C virus[3-5]. Some investigations have been reported on the seroprevalence and molecular prevalence of HGV infection in different areas and different population[6-15]. Current infection of HGV is diagnosed by detection of HGV RNA, and past infection with HGV is detectable by testing anti-HGV envelope protein (E2)[16-17]. To investigate the prevalence of HGV in Hubei Province, a central area of the People's Republic of China, ELISA and RT-PCR were employed to detect serum anti-HGV and HGV RNA in 1516 patients who were divided into 16 groups. 展开更多
关键词 HEPATITIS g virus enzyme linked immunoabsorbent assay risk factors POLYMERASE chain reaction PREVALENCE TRANSCRIPTION genetic
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Environmental Risk Factors for Stomach Cancer in an African Setting about 193 Cases at the CHU Point G in Bamako/Mali 被引量:2
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作者 Souleymane Sanogo Drissa Traoré +8 位作者 Mamadou Coulibaly Birama Togola Bréhima Bengaly Ousmane Ibréhima Touré Drissa Ouattara Bréhima Coulibaly Babou Ba Siaka Diallo Nouhoum Ongoiba 《Surgical Science》 2021年第2期23-30,共8页
CHU (University Hospital Center) Point G: The department of surgery B is a surgical department of CHU Point G. The department is par excellence a reference department for cases of visceral surgery, cancer surgery, car... CHU (University Hospital Center) Point G: The department of surgery B is a surgical department of CHU Point G. The department is par excellence a reference department for cases of visceral surgery, cancer surgery, cardiovascular surgery, plastic and endocrinology surgery. As a reminder, the CHU Point G is the largest 3rd level referral hospital in Mali. <b><span style="font-family:Verdana;">Aim:</span></b><span style="font-family:Verdana;"> To study the environmental risk factors of stomach cancer in the B surgery department of the Point G University Hospital in Bamako. </span><b><span style="font-family:Verdana;">Patients and Methods:</span></b><span style="font-family:Verdana;"> We performed a cross-sectional study with retrospective collection from January 2008 to June 2018 (126 months). </span><b><span style="font-family:Verdana;">Results: </span></b><span style="font-family:Verdana;">We have identified 380 cases of digestive cancer, including 193 cases of stomach cancer </span><span style="font-family:Verdana;">o</span><span style="font-family:;" "=""><span style="font-family:Verdana;">r 50.79% of digestive cancers. The mean age of the patients was 57.21 ± 13 years. Male sex represented 55% (n = 106). Eating habits were dominated by the consumption of t<span style="font-family:Verdana, Helvetica, Arial;white-space:normal;background-color:#FFFFFF;">&ocirc;</span> with potash (cereal paste) with 64.76% (n = 185). The main methods of preserving meat and fish were curing and smoking with 57.51% (n = 111). Chronic smoking was found in 24.35% (n = 47), alcohol + tobacco consumption in 2.59% (n = 5). The low socio-economic class represented 126 cases or 65.38%. Housewives and cultivators were respectively 37.82% (n = 73) and 227.97% (n = 54). 20.20% (n = 39) had a history of epigastric pain. Epigastralgia was the most common functional sign with 84.5% of cases (n = 169). An epigastric mass was found in 72 patients or 37.3%. Adenocarcinoma represented 97.4% (n = 188). Palliative surgery concerned the majority of our patients with 64.8% of patients (n = 79). The postoperative consequences were simple in 28.57% of cases (n = 28), the postoperative morbidity and mortality were respectively 33.61% (n = 41), and 23.77% (n = 29). The overall survival rate after surgery was 10.81% at 2 years and 2.94% at 5 years. This rate was 58.83% at 2 years and 28.50% at 5 years after curative surgery. </span><b><span style="font-family:Verdana;">Conclusion:</span></b><span style="font-family:Verdana;"> The risk factors for stomach cancer are many and varied. Some are particularly present in Africa. Delay in diagnosis due to a belief in traditional healers is common in our community.</span></span> 展开更多
关键词 Stomach Cancer Environmental Risk factors African Setting CHU Point g
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少电子离子束缚态电子g因子精密测量
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作者 屠秉晟 《物理学报》 SCIE EI CAS CSCD 北大核心 2024年第20期36-46,共11页
少电子离子束缚态电子g因子的精密测量是借助原子分子体系研究束缚态量子电动力学(QED)理论的有效途径.特别是在高电荷态重核体系中,原子核与内壳层电子之间极强的电磁相互作用为研究极端电磁场环境下的QED效应提供了独一无二的条件.通... 少电子离子束缚态电子g因子的精密测量是借助原子分子体系研究束缚态量子电动力学(QED)理论的有效途径.特别是在高电荷态重核体系中,原子核与内壳层电子之间极强的电磁相互作用为研究极端电磁场环境下的QED效应提供了独一无二的条件.通过精确测量束缚态电子g因子,还可以分析核效应、测定核结构参数、确定基本物理常数等.少电子离子束缚态电子g因子的研究已经成为精密谱学方向的前沿课题.潘宁离子阱(借助稳态电磁场囚禁离子的系统)是进行g因子测量的有效实验装置之一.本综述将对基于潘宁离子阱开展少电子离子束缚态电子g因子的实验研究进行全面回顾,介绍基本实验原理与测量方法,重点论述该领域在近几年中的重要实验成果,并对未来发展进行简要展望. 展开更多
关键词 少电子离子 g因子 潘宁阱 精密测量
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Mononuclear cells from the cord blood and granulocytecolony stimulating factor-mobilized peripheral blood:is there a potential for treatment of cerebral palsy? 被引量:4
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作者 Hani Koh Kyoujung Hwang +2 位作者 Hae-Young Lim Yong-Joo Kim Young-Ho Lee 《Neural Regeneration Research》 SCIE CAS CSCD 2015年第12期2018-2024,共7页
To investigate a possible therapeutic mechanism of cell therapy in the field of cerebral palsy using granulocyte-colony stimulating factor(G-CSF)-mobilized peripheral blood mononuclear cells(m PBMCs),we compared t... To investigate a possible therapeutic mechanism of cell therapy in the field of cerebral palsy using granulocyte-colony stimulating factor(G-CSF)-mobilized peripheral blood mononuclear cells(m PBMCs),we compared the expression of inflammatory cytokines and neurotrophic factors in PBMCs and m PBMCs from children with cerebral palsy to those from healthy adult donors and to cord blood mononuclear cells donated from healthy newborns.No significant differences in expression of neurotrophic factors were found between PBMCs and m PBMCs.However,in cerebral palsy children,the expression of interleukin-6 was significantly increased in m PBMCs as compared to PBMCs,and the expression of interleukin-3 was significantly decreased in m PBMCs as compared to PBMCs.In healthy adults,the expression levels of both interleukin-1βand interleukin-6 were significantly increased in m PBMCs as compared to PBMCs.The expression of brain-derived neurotrophic factors in m PBMC from cerebral palsy children was significantly higher than that in the cord blood or m PBMCs from healthy adults.The expression of G-CSF in m PBMCs from cerebral palsy children was comparable to that in the cord blood but significantly higher than that in m PBMCs from healthy adults.Lower expression of pro-inflammatory cytokines(interleukin-1β,interleukin-3,and-6)and higher expression of anti-inflammatory cytokines(interleukin-8 and interleukin-9)were observed from the cord blood and m PBMCs from cerebral palsy children rather than from healthy adults.These findings indicate that m PBMCs from cerebral palsy and cord blood mononuclear cells from healthy newborns have the potential to become seed cells for treatment of cerebral palsy. 展开更多
关键词 neurotrophic factors inflammatory cytokines cord blood g-CSF mobilized peripheralblood mononuclear cell cerebral palsy CHILDREN neural regeneration
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MFG-E8和GNA14在子宫内膜异位症相关性卵巢癌中的表达及其临床意义
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作者 程燕 张宁 +5 位作者 董黎 凌箫鸣 王悦 陈贵芹 靖爽 陈雁南 《检验医学》 CAS 2024年第6期530-535,共6页
目的探讨乳脂球表皮生长因子8(MFG-E8)和G蛋白亚基α-14(GNA14)在子宫内膜异位症相关性卵巢癌(EAOC)中的表达及其临床意义。方法选取2015年5月—2017年5月华北医疗健康集团峰峰总医院EAOC患者51例(EAOC组)、非典型子宫内膜异位症(AEM)患... 目的探讨乳脂球表皮生长因子8(MFG-E8)和G蛋白亚基α-14(GNA14)在子宫内膜异位症相关性卵巢癌(EAOC)中的表达及其临床意义。方法选取2015年5月—2017年5月华北医疗健康集团峰峰总医院EAOC患者51例(EAOC组)、非典型子宫内膜异位症(AEM)患者63例(AEM组)、卵巢型子宫内膜异位症(EMT)患者82例(EMT组)。收集所有患者的临床资料,并检测病变组织中MFG-E8、GNA14表达。对EAOC患者随访5年。采用Kaplan-Meier生存曲线分析EAOC患者的生存情况。采用多因素Cox回归分析评估EAOC患者死亡的危险因素。结果EAOC组MFG-E8阳性率为82.35%、GNA14阳性率为70.59%,均显著高于AEM组(41.27%、44.44%)和EMT组(25.61%、23.17%)(P<0.001)。MFG-E8高表达组和低表达组肿瘤直径、肿瘤级别、国际妇产科联合会(FIGO)分期、淋巴转移情况差异均有统计学意义(P<0.05)。GNA14高表达组和低表达组淋巴转移情况差异有统计学意义(P=0.009)。Kaplan-Meier生存曲线分析结果显示,MFG-E8高表达组和GNA14高表达组无进展生存期分别短于MFG-E8低表达组和GNA14低表达组(P<0.05)。多因素Cox回归分析结果显示,FIGO分期Ⅱ期、淋巴转移、MFG-E8高表达、GNA14高表达是EAOC患者死亡的独立危险因素[风险比(HR)值分别为2.337、2.519、3.133、3.080,95%可信区间(CI)分别为1.258~4.342、1.332~4.764、1.381~7.108、1.318~7.197,P<0.01]。结论MFG-E8、GNA14在EAOC患者癌组织中呈高表达,且与患者预后不良密切相关,或可作为EAOC患者的预后评估指标。 展开更多
关键词 乳脂球表皮生长因子8 g蛋白亚基α-14 子宫内膜异位症 卵巢癌
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