The dissipation phenomenon in the heavy-ion reaction at incident energy near the Fermi energy is studied by simulating the reaction ^129Xe＋^129Sn with the isospin-dependent quantum molecular dynamics model. The calcu...The dissipation phenomenon in the heavy-ion reaction at incident energy near the Fermi energy is studied by simulating the reaction ^129Xe＋^129Sn with the isospin-dependent quantum molecular dynamics model. The calculations involving a proper prescription of implementing the Pauli exclusion principle show that the isotropy ratio measured by free protons emitted in the reaction at energy slightly higher than the Fermi energy is in agreement with the experimental data recently released by the INDRA collaboration. A feasible value of the Pauli-blocking factor is estimated by comparing the theoretical results with the experimental data for the energy range considered here.展开更多
目的研究孕妇血清叶酸(FA)、单核细胞趋化蛋白-1(MCP-1)和孕酮诱导的阻断因子(PIBF)水平与早期妊娠胚胎停止发育的相关性。方法选取2021年12月~2023年12月荆州市第二人民医院收治的早期妊娠胚胎停止发育孕妇98例为胎停组,另选同期进行...目的研究孕妇血清叶酸(FA)、单核细胞趋化蛋白-1(MCP-1)和孕酮诱导的阻断因子(PIBF)水平与早期妊娠胚胎停止发育的相关性。方法选取2021年12月~2023年12月荆州市第二人民医院收治的早期妊娠胚胎停止发育孕妇98例为胎停组,另选同期进行孕检的正常早期妊娠孕妇50例为对照组,收集一般临床资料,酶联免疫吸附试验(ELISA)检测血清FA,MCP-1和PIBF水平。多因素Logistic回归分析早期妊娠胚胎停止发育的影响因素;绘制受试者工作特征(ROC)曲线分析血清FA,MCP-1和PIBF对早期妊娠胚胎停止发育的预测价值;Pearson法分析血清FA,MCP-1,PIBF与孕酮(PROG)、雌二醇(E2)以及β-人绒毛膜促性腺激素(β-HCG)的相关性。结果与对照组相比,胎停组的血清FA(9.51±1.21nmol/L vs 11.32±1.56nmol/L),PIBF(295.46±30.22 ng/ml vs 342.14±36.97ng/ml)水平降低,血清MCP-1(1.02±0.15 mg/ml vs 0.82±0.11 mg/ml)水平升高,差异具有统计学意义(t=7.785,8.347,8.229,均P<0.001)。两组孕妇的胎停史(75.64%vs 25.36%),PROG(13.32±1.81 ng/ml vs 23.65±2.74 ng/ml),E2(221.34±25.69 pmol/L vs 298.65±31.64 pmol/L)以及β-HCG(5323.62±536.85 U/L vs 8562.31±924.55 U/L)水平比较,差异具有统计学意义(t/χ^(2)=6.548~27.428,均P<0.05)。孕妇胎停史、MCP-1水平升高为影响早期妊娠胎停的危险因素(Waldχ^(2)=4.239,4.613,均P<0.05),β-HCG,FA以及PIBF水平升高为影响早期妊娠胎停的保护因素(Waldχ^(2)=4.476,4.423,5.974,均P<0.05);FA,MCP-1,PIBF以及联合预测早期妊娠胚胎停止发育的AUC分别为0.811,0.805,0.816和0.908,联合预测显著优于FA,MCP-1,PIBF单独预测(Z=2.749,2.381,1.993,均P<0.05)。FA,PIBF与PROG,E2,β-HCG呈正相关(r=0.433~0.512,均P<0.05),MCP-1与PROG,E2,β-HCG呈负相关(r=-0.432,-0.487,-0.458,均P<0.05)。结论早期妊娠胚胎停止发育孕妇血清FA,PIBF水平降低,MCP-1水平升高,三者均为影响孕妇胚胎停止发育的影响因素,对早期妊娠胚胎停止发育具有一定辅助预测价值。展开更多
基金Supported by the National Natural Science Foundation Of China under Grant Nos 11265013,11175074,11264033 and 11464040
文摘The dissipation phenomenon in the heavy-ion reaction at incident energy near the Fermi energy is studied by simulating the reaction ^129Xe＋^129Sn with the isospin-dependent quantum molecular dynamics model. The calculations involving a proper prescription of implementing the Pauli exclusion principle show that the isotropy ratio measured by free protons emitted in the reaction at energy slightly higher than the Fermi energy is in agreement with the experimental data recently released by the INDRA collaboration. A feasible value of the Pauli-blocking factor is estimated by comparing the theoretical results with the experimental data for the energy range considered here.
文摘目的研究孕妇血清叶酸(FA)、单核细胞趋化蛋白-1(MCP-1)和孕酮诱导的阻断因子(PIBF)水平与早期妊娠胚胎停止发育的相关性。方法选取2021年12月~2023年12月荆州市第二人民医院收治的早期妊娠胚胎停止发育孕妇98例为胎停组,另选同期进行孕检的正常早期妊娠孕妇50例为对照组,收集一般临床资料,酶联免疫吸附试验(ELISA)检测血清FA,MCP-1和PIBF水平。多因素Logistic回归分析早期妊娠胚胎停止发育的影响因素;绘制受试者工作特征(ROC)曲线分析血清FA,MCP-1和PIBF对早期妊娠胚胎停止发育的预测价值;Pearson法分析血清FA,MCP-1,PIBF与孕酮(PROG)、雌二醇(E2)以及β-人绒毛膜促性腺激素(β-HCG)的相关性。结果与对照组相比,胎停组的血清FA(9.51±1.21nmol/L vs 11.32±1.56nmol/L),PIBF(295.46±30.22 ng/ml vs 342.14±36.97ng/ml)水平降低,血清MCP-1(1.02±0.15 mg/ml vs 0.82±0.11 mg/ml)水平升高,差异具有统计学意义(t=7.785,8.347,8.229,均P<0.001)。两组孕妇的胎停史(75.64%vs 25.36%),PROG(13.32±1.81 ng/ml vs 23.65±2.74 ng/ml),E2(221.34±25.69 pmol/L vs 298.65±31.64 pmol/L)以及β-HCG(5323.62±536.85 U/L vs 8562.31±924.55 U/L)水平比较,差异具有统计学意义(t/χ^(2)=6.548~27.428,均P<0.05)。孕妇胎停史、MCP-1水平升高为影响早期妊娠胎停的危险因素(Waldχ^(2)=4.239,4.613,均P<0.05),β-HCG,FA以及PIBF水平升高为影响早期妊娠胎停的保护因素(Waldχ^(2)=4.476,4.423,5.974,均P<0.05);FA,MCP-1,PIBF以及联合预测早期妊娠胚胎停止发育的AUC分别为0.811,0.805,0.816和0.908,联合预测显著优于FA,MCP-1,PIBF单独预测(Z=2.749,2.381,1.993,均P<0.05)。FA,PIBF与PROG,E2,β-HCG呈正相关(r=0.433~0.512,均P<0.05),MCP-1与PROG,E2,β-HCG呈负相关(r=-0.432,-0.487,-0.458,均P<0.05)。结论早期妊娠胚胎停止发育孕妇血清FA,PIBF水平降低,MCP-1水平升高,三者均为影响孕妇胚胎停止发育的影响因素,对早期妊娠胚胎停止发育具有一定辅助预测价值。
