In this paper, we study the scattering properties of s-wave Schrdinger equation for the multi-parameter potential,which can be reduced into four special cases for different values of potential parameters, i.e., Hulthn...In this paper, we study the scattering properties of s-wave Schrdinger equation for the multi-parameter potential,which can be reduced into four special cases for different values of potential parameters, i.e., Hulthn, Manning–Rosen,and Eckart potentials. We also obtain and investigate the scattering amplitudes of these special cases. Some numerical results are also obtained and reported.展开更多
With the continuous development of the new curriculum reform, senior High school English teachers should construct a practical and contemporary English teaching classroom. High school English teachers should constantl...With the continuous development of the new curriculum reform, senior High school English teachers should construct a practical and contemporary English teaching classroom. High school English teachers should constantly innovate and optimize their own teaching mode according to the actual teaching situation, and improve students' core literacy through the teaching method of "two rings, three sections and four tests". Listening, speaking, reading and writing belong to the language competence dimension of core literacy. Therefore, English teachers need to adopt scientific and reasonable methods to guide students to master listening, speaking, reading and writing skills, and help students develop good listening, speaking, reading and writing habits in long-term persistence and training, so that students can achieve twice the result with half the effort in the process of English learning.展开更多
背景与目的:对于少数空芯针穿刺未能明确诊断的早期乳腺癌,冰冻切片病理学检查的延迟诊断率尚不清楚。本回顾性队列研究旨在探讨术中快速冰冻切片病理学检查在这种情况下的临床应用价值。方法:回顾性分析2006年5月1日—2019年12月31日...背景与目的:对于少数空芯针穿刺未能明确诊断的早期乳腺癌,冰冻切片病理学检查的延迟诊断率尚不清楚。本回顾性队列研究旨在探讨术中快速冰冻切片病理学检查在这种情况下的临床应用价值。方法:回顾性分析2006年5月1日—2019年12月31日在复旦大学附属肿瘤医院就诊的乳腺癌患者的临床资料。收集患者的临床特征、影像资料和病理学资料。采用logistic回归分析方法探索患者的临床特征与术中快速冰冻切片病理学检查延迟诊断的相关性,并构建预测延迟诊断率的诺模图。本研究获得复旦大学附属肿瘤医院伦理委员会批准(伦理批号:050432-4-2108*)。结果:共876例患者符合入组标准而纳入本研究。对空芯针穿刺未能明确诊断的乳腺癌的术中快速冰冻切片病理学检查诊断率为67.7%,延迟诊断率为32.3%。多因素分析中,空芯针标本伴有非典型增生的乳头状病变[比值比(odds ratio,OR)=4.251,95%CI:2.804~6.492,P<0.001]和硬化性腺病(OR=3.727,95%CI:1.897~7.376,P<0.001)是导致冰冻切片延迟诊断的正相关因素,乳房X线摄影见簇状微钙化(OR=0.345,95%CI:0.216~0.543,P<0.001)和超声诊断结果依据乳腺影像报告和数据系统(Breast Imaging Reporting and Data System,BI-RADS)分类为4C~5类(OR=0.250,95%CI:0.081~0.777,P=0.016)是术中诊断率高的正相关因素。通过这些因素构建的诺模图能较好地预测术中快速冰冻切片病理学检查的延迟诊断率,从而更好地筛选出适合术中快速冰冻切片病理学检查的病例。结论:术中快速冰冻切片病理学检查对空芯针穿刺未能明确诊断的乳腺癌有一定的延迟诊断率,通过模型预测的方法可有效地筛除延迟诊断的病例,避免一些不必要的术中快速冰冻切片病理学检查。展开更多
文摘In this paper, we study the scattering properties of s-wave Schrdinger equation for the multi-parameter potential,which can be reduced into four special cases for different values of potential parameters, i.e., Hulthn, Manning–Rosen,and Eckart potentials. We also obtain and investigate the scattering amplitudes of these special cases. Some numerical results are also obtained and reported.
文摘With the continuous development of the new curriculum reform, senior High school English teachers should construct a practical and contemporary English teaching classroom. High school English teachers should constantly innovate and optimize their own teaching mode according to the actual teaching situation, and improve students' core literacy through the teaching method of "two rings, three sections and four tests". Listening, speaking, reading and writing belong to the language competence dimension of core literacy. Therefore, English teachers need to adopt scientific and reasonable methods to guide students to master listening, speaking, reading and writing skills, and help students develop good listening, speaking, reading and writing habits in long-term persistence and training, so that students can achieve twice the result with half the effort in the process of English learning.
文摘背景与目的:对于少数空芯针穿刺未能明确诊断的早期乳腺癌,冰冻切片病理学检查的延迟诊断率尚不清楚。本回顾性队列研究旨在探讨术中快速冰冻切片病理学检查在这种情况下的临床应用价值。方法:回顾性分析2006年5月1日—2019年12月31日在复旦大学附属肿瘤医院就诊的乳腺癌患者的临床资料。收集患者的临床特征、影像资料和病理学资料。采用logistic回归分析方法探索患者的临床特征与术中快速冰冻切片病理学检查延迟诊断的相关性,并构建预测延迟诊断率的诺模图。本研究获得复旦大学附属肿瘤医院伦理委员会批准(伦理批号:050432-4-2108*)。结果:共876例患者符合入组标准而纳入本研究。对空芯针穿刺未能明确诊断的乳腺癌的术中快速冰冻切片病理学检查诊断率为67.7%,延迟诊断率为32.3%。多因素分析中,空芯针标本伴有非典型增生的乳头状病变[比值比(odds ratio,OR)=4.251,95%CI:2.804~6.492,P<0.001]和硬化性腺病(OR=3.727,95%CI:1.897~7.376,P<0.001)是导致冰冻切片延迟诊断的正相关因素,乳房X线摄影见簇状微钙化(OR=0.345,95%CI:0.216~0.543,P<0.001)和超声诊断结果依据乳腺影像报告和数据系统(Breast Imaging Reporting and Data System,BI-RADS)分类为4C~5类(OR=0.250,95%CI:0.081~0.777,P=0.016)是术中诊断率高的正相关因素。通过这些因素构建的诺模图能较好地预测术中快速冰冻切片病理学检查的延迟诊断率,从而更好地筛选出适合术中快速冰冻切片病理学检查的病例。结论:术中快速冰冻切片病理学检查对空芯针穿刺未能明确诊断的乳腺癌有一定的延迟诊断率,通过模型预测的方法可有效地筛除延迟诊断的病例,避免一些不必要的术中快速冰冻切片病理学检查。
