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先进高强钢常见缺陷成因分析与控制 被引量:4
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作者 梁振威 裴宏江 +4 位作者 史文礼 张垚 刘冠华 褚明义 王浩 《河北冶金》 2020年第7期22-25,共4页
介绍了先进高强钢的种类以及缺陷的特殊性,分析了其生产过程中最容易产生的表面黑点和边裂两类缺陷产生的根本原因,并提出了控制措施。认为黑点缺陷是热轧氧化铁皮酸洗不净造成的;而连退带钢边裂缺陷遗传自酸轧边裂。热轧氧化铁皮黑点... 介绍了先进高强钢的种类以及缺陷的特殊性,分析了其生产过程中最容易产生的表面黑点和边裂两类缺陷产生的根本原因,并提出了控制措施。认为黑点缺陷是热轧氧化铁皮酸洗不净造成的;而连退带钢边裂缺陷遗传自酸轧边裂。热轧氧化铁皮黑点缺陷可以通过加大破鳞机延伸率并优化酸洗工艺参数进行控制;边裂缺陷可通过在ODS订单设计系统中建立双切边路径,有效阻断边裂缺陷的遗传性,消除断带事故,确保先进高强钢边部质量。 展开更多
关键词 先进高强钢 黑点 边裂 酸洗 双切边
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移动卫星通信领域的天线应用分析
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作者 史军良 周宏新 《仪器仪表用户》 2010年第5期83-85,共3页
本文从移动卫星通信领域的实际应用出发,由简入深地比较和分析了几种常用的天线型式,并根据实际应用需求,提出了一种双偏置抛物面切边天线的设计和应用的可行性。
关键词 抛物面天线 环焦天线 偏置天线 偏置抛物面切边天线
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Bilateral liver resection for bilateral intrahepatic stones 被引量:8
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作者 Shao-Qiang Li Li-Jian Liang Yun-Peng Hua Bao-Gang Peng Dong Chen Shun-Jun Fu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第29期3660-3663,共4页
AIM: To evaluate the shortand long-term outcomes of bilateral liver resection for bilateral intrahepatic stones. METHODS: We reviewed retrospectively 101 consecutive patients with bilateral intrahepatic stones who und... AIM: To evaluate the shortand long-term outcomes of bilateral liver resection for bilateral intrahepatic stones. METHODS: We reviewed retrospectively 101 consecutive patients with bilateral intrahepatic stones who underwent bilateral liver resection in the past 10 years. The shortand long-term outcomes of the patients were analyzed. The Cox proportional hazards model was used to identify the risk factors related to stone recurrence. RESULTS: There was no surgical mortality in this group of patients. The surgical morbidity was 28.7%. Stone clearance rate after hepatectomy was 84.2% and final clearance rate was 95.0% following postoperative choledochoscopic lithotripsy. The stone recurrence rate was 7.9% and the occurrence of postoperative cholangitis was 6.5% in a median follow-up period of 54 mo. The Cox proportional hazards model indicated that liver resection range, less than the range of stone distribution (P = 0.015, OR = 2.152) was an independent risk factor linked to stone recurrence. CONCLUSION: Bilateral liver resection is safe and its shortand long-term outcomes are satisfactory for bilateral intrahepatic stones. 展开更多
关键词 Intrahepatic stone HEPATECTOMY Riskfactor OUTCOME BILATERAL
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