期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
多模态超声在评估甲状腺微小乳头状癌颈部中央区淋巴结转移中的价值 被引量:1
1
作者 李建宁 司志雯 +2 位作者 于明秀 蒋雪梅 张远媛 《中国中西医结合影像学杂志》 2024年第1期61-65,共5页
目的:评估多模态超声预测甲状腺微小乳头状癌(PTMC)颈部中央区淋巴结转移的有效性。方法:收集110例PTMC患者的临床指标和多模态超声特征,并与颈部中央区淋巴结转移行单因素及多因素分析。结果:<42岁、男性PTMC患者更易发生颈部中央... 目的:评估多模态超声预测甲状腺微小乳头状癌(PTMC)颈部中央区淋巴结转移的有效性。方法:收集110例PTMC患者的临床指标和多模态超声特征,并与颈部中央区淋巴结转移行单因素及多因素分析。结果:<42岁、男性PTMC患者更易发生颈部中央区淋巴结转移(均P<0.05);结节最大截面横径≥0.52 cm或纵径≥0.66 cm是PTMC发生颈部中央区淋巴结转移的高危因素(均P<0.01);微钙化和弹性评分≥4分的PTMC患者更易发生颈部中央区淋巴结转移(均P<0.01)。多因素分析显示,仅微钙化是PTMC颈部中央区淋巴结转移的独立危险因素。结论:对结节内伴微钙化的PTMC患者,应加强颈部中央区淋巴结的术前评估和术中治疗。 展开更多
关键词 超声检查 甲状腺微小乳头状癌 中央区淋巴结 转移
下载PDF
Mathematical model for the thermal process of controlled cooling of wires and its numerical simulation 被引量:3
2
作者 HongxiangZhu XiaohongHao +2 位作者 zhiwen YaogenZhang HuqiuChen 《Journal of University of Science and Technology Beijing》 CSCD 2004年第6期505-510,共6页
The mathematical model for the thermal process of billets rolling has beenestablished, including transporting in air and temperature-holding cover, descaling withhigh-pressure water, and the process of rolling and coo... The mathematical model for the thermal process of billets rolling has beenestablished, including transporting in air and temperature-holding cover, descaling withhigh-pressure water, and the process of rolling and cooling in water box. The calculated data by themodel have been compared with the measured data and the results show that the model is right andcreditable. Based on the model, the main thermal characters of rolling line have been simulated andthe influence of all the parameters on the temperature of rolling has been analyzed. 展开更多
关键词 WIRE controlled cooling mathematical model numerical simulation
下载PDF
Feedback control strategy of longitudinal temperature and finished carbonization time for coke oven and its application
3
作者 FangHuo zhiwen +3 位作者 DongChen YuelingShen YongqinZhang XiaomingZhi 《Journal of University of Science and Technology Beijing》 CSCD 2004年第2期110-114,共5页
Based on the detailed analysis of the third coke oven in BaoSteel, a feedbackcontrol strategy of longitudinal temperature and finished carbonization time of coke ovens wasproposed and it was applied to the third coke ... Based on the detailed analysis of the third coke oven in BaoSteel, a feedbackcontrol strategy of longitudinal temperature and finished carbonization time of coke ovens wasproposed and it was applied to the third coke oven in BaoSteel. As a result, the ratio of theinstance that the absolute deviation of the longitudinal temperature is within +- 7 deg C and thefinished carbonization time within +- 10 min is more than 80 percent, having acquired the patentsaving effect of an energy consumption lowered by 2.92 percent. At the same time, it can provide anexample for the same coke ovens inside and outside the nation. 展开更多
关键词 coke oven longitudinal temperature mathematical model finishedcarbonization time feedback control strategy
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部