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螺旋断层调强放射治疗局部晚期胰腺癌的疗效和预后影响因素分析

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解放军医学院学报 2017年第6期38卷 497-499,504页

作者：张欣悦邱栾刘其腾赵志飞高灵灵叶蕊吴璇许兵女李世宏李建雄解放军总医院放疗科北京100853

目的探讨螺旋断层调强放射治疗局部晚期胰腺癌(locally advanced pancreatic cancer,LAPC)的疗效和预后影响因素。方法回顾本院放疗科2012年1月-2015年12月20例无法手术且接受螺旋断层调强放射治疗的LAPC患者的临床资料,进行近期疗效和... 详细信息

目的探讨螺旋断层调强放射治疗局部晚期胰腺癌(locally advanced pancreatic cancer,LAPC)的疗效和预后影响因素。方法回顾本院放疗科2012年1月-2015年12月20例无法手术且接受螺旋断层调强放射治疗的LAPC患者的临床资料,进行近期疗效和长期生存观察,并通过Log-rank法和Cox回归模型分别进行单因素和多因素分析,判断影响预后的因素。结果本研究纳入20例局部晚期胰腺癌患者,男13例,女7例;中位年龄56岁;13例肿瘤位于胰头(62.5%),7例位于胰体/尾(37.5%)。7例放疗后CA199水平下降;8例疼痛缓解(8/11)。放疗后1年、2年生存率分别为40%(8/20)、10%(2/20)。采用Cox回归模型进行多因素分析显示,肿瘤部位和卡氏评分(Karnofsky performance status,KPS)是影响螺旋断层放疗后胰腺癌预后的独立因素。1例放疗后发生Ⅲ级血液系统反应,未见Ⅲ级及以上消化道反应。结论螺旋断层放射治疗是一种治疗LAPC的有效方式,肿瘤部位和KPS评分是影响预后的独立因素。

关键词：螺旋断层调强放射治疗胰腺癌预后

Research on Parallel Interleaved Inverters with Discontinuous Space-Vector Modulation

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Energy and Power Engineering 2013年第4期5卷 219-225页

作者： Feng Yang Xu zhao Cong Wang zhifei Sun China University of Mining & Technology (Beijing) Beijing China Chongqing Research Institute of China Coal Technology & Engineering Group Corporation Chongqing China

Parallel converter can significantly increase the capacity of the converter and improve the power quality of AC side, but the circulation which can lead to high switching loss and even damage the devices will easily exist in the direct parallel converters. In this paper, the average model of parallel interleaved inverters system to analyze the circulation current is shown, and the cross current is relevant to DC-bus voltage and the overlap time of zero vectors in the switching period. Based on this observation, a discontinuous space vector modulation without using zero vectors (000) is eliminate and suppress the zero-sequence current to entire system. Finally, the effectiveness of modulation strategy is verified by the simulations in this paper.

关键词： Interleaved Inverters Circulating Current Discontinuous Space-vector Modulation Zero- sequence

MIS2期南海北部粘土矿物记录的东亚夏季风快速变化

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第四纪研究 2019年第4期39卷 894-904页

作者：赵绍华刘志飞同济大学海洋地质国家重点实验室上海200092 自然资源部第三海洋研究所海洋与海岸地质实验室福建厦门361005

运用伊利石结晶度线性剥离法,定量计算了华南、台湾和吕宋这 3 个主要物源区对南海北部陆坡MD12-3432和MD12-3434两个岩芯(分别为50. 80 m和8. 33 m)MIS 2期粘土相对贡献量的时间序列变化.结果显示,台湾对两个岩芯的贡献最大(36%~62%),... 详细信息

运用伊利石结晶度线性剥离法,定量计算了华南、台湾和吕宋这 3 个主要物源区对南海北部陆坡MD12-3432和MD12-3434两个岩芯(分别为50. 80 m和8. 33 m)MIS 2期粘土相对贡献量的时间序列变化.结果显示,台湾对两个岩芯的贡献最大(36%~62%),吕宋的贡献次之(28%~50%),二者之和一般大于90%,而来自华南的贡献最小(3%~17%).台湾和吕宋的贡献量呈现显著反向的千年时间尺度快速波动,二者贡献量随东亚夏季风增强或减弱而显著变化,因此,吕宋/台湾贡献量比值可以用于指示东亚夏季风的快速演化.吕宋/台湾粘土贡献量比值在B?lling-Aller?d和Dansgaard-Oeschger 2事件期间的增加,反映了同时期东亚夏季风的快速增强;而在Heinrich 1和Heinrich 2事件期间的减小,则指示了东亚夏季风的减弱.吕宋/台湾贡献量比值对东亚夏季风快速变化的指示,在一定程度上要明显优于蒙脱石/(伊利石+绿泥石)比值.南海北部MIS 2期粘土矿物对东亚夏季风快速变化的响应具有明显的空间差异性,受洋流搬运扰动和物源控制作用影响,陆坡相对浅水区粘土矿物记录的东亚夏季风快速变化信息相对有限,而深水稳定的沉积环境则更有利于保存东亚夏季风快速变化信息.

关键词：粘土矿物东亚季风相对贡献量快速气候变化南海氧同位素2期

The Development of Armor Plate with Super High Strength 2000MPa in Baosteel

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The Development of Armor Plate with Super High Strength 2000...

第十届中国钢铁年会暨第六届宝钢学术年会

作者： zhao Xiaoting Yao Liandeng Wang Xiaodong Gu zhifei Baoshan Iron & Steel Co. Ltd. Inner Mongolia First Machinery Group Co. Ltd.

The research development of armor plate with super high strength 2000 MPa in lab was introduced in detail, involving the results of mechanical properties, cutting, cold bending and ballistic test. The results display that the strength of the test steel is up to 2000 MPa with excellent ballistic behavior. In addition, the test steel has good cutting and cold-forming performance with suitable cutting machine and cold forming process. Key words armor plate with super high strength, cutting, bending, ballistic behavior Abstract The research development of armor plate with super high strength 2000 MPa in lab was introduced in detail, involving the results of mechanical properties, cutting, cold bending and ballistic test. The results display that the strength of the test steel is up to 2000 MPa with excellent ballistic behavior. In addition, the test steel has good cutting and cold-forming performance with suitable cutting machine and cold forming process.

关键词： armor plate with super high strength cutting bending ballistic behavior

Single-incision Laparoscopic Splenectomy for Massive Splenomegaly Combining Gastroesophageal Devascularization Using Conventional Instruments

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Single-incision Laparoscopic Splenectomy for Massive Splenom...

第十九届中国科协年会——分10微创外科高峰论坛

作者： Jun XU Lei zhao zhifei WANG Bo ZHAI Chunfu LIU Department of General Surgery First Hospital of Harbin Medical University Department of General Surgery Fourth Hospital of Harbin Medical University

Background:Single-incision laparoscopic splenectomy has been reported and was proved to be feasible and *** reports on single-incision laparoscopic surgery(SILS)for massive splenomegaly is not seen,neither is SILS for gastroesophageal devascularization;another correlated procedure for patients complicated with bleeding esophageal *** February 2011 to March 2012,6 male patients with a median age of 45.1 years(range,25 to65 y) who were diagnosed of liver cirrhosis,portal hypertension,splenomegaly,and hypersplenism underwent SILS by the same surgical team in our *** them,4 patients who were indicated had combined gastroesophageal devascularization,except for 1 conversion to hand-assisted laparoscopic approach because of bleeding,the operations were performed uneventfully and the surgical outcomes were *** diagnosis was hypersplenism secondary to liver cirrhosis,the surgical outcome was *** preoperative diagnosis are,hepatitis B,the patient’s liver function is Liver Child-Pugh grade ***:The patient was placed in reverse Trendelenburg position,with the legs *** surgeon was standing on the right side of the patient and an assistant standing in between the *** 20-mm incision was made under the umbilicus,a 10-mm Trocar(Johnson & Johnson Investment ***.,NJ) was introduced in the middle of the incision,and the abdominal cavity was explored with a 10-mm,30-degree scope(Storz ***.,Germany).Then a 12-mm and a 5-mm trocar were introduced through the same incision,respectively,45 degree to the 10-mm trocar at both sides to form a "r" *** procedure started with the dissection of the splenocolic ligament at the lower pole of the spleen,followed by creating a window by dissecting the gastrocolic *** secondary branches of splenic pedicle were dissected and *** dissection of splenogastric ligament was continued along the gastric greater curvature,and short gastric vessels were encounte

关键词： single-incision laparoscopic surgery laparoscopic splenectomy massive splenomegaly gastroesophageal devascularization

Transumbilical Single-incision Laparoscopic Splenectomy:is it Feasible for Splenomegaly to Liver Cirrhosis and Portal Hypertension

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Transumbilical Single-incision Laparoscopic Splenectomy:is i...

第十九届中国科协年会——分10微创外科高峰论坛

作者： Jun XU Chunfu LIU Lei zhao Yinghui GUAN zhifei WANG Department of General Surgery First Hospital of Harbin Medical University Department of General Surgery Fourth Hospital of Harbin Medical University Department of Hepatic surgery Zhejiang Province People's Hospital

Objective:Single-incision Laparoscopic splenectomy(SILSp) now recognized for its improving cosmesis over conventional laparoscopic splenectomy in patients with normal and mildly enlarged ***,SILSp with splenomegaly to liver cirrhosis and portal hypertension is still ***:From February 2011 to March 2012,6 cases with splenomegaly to liver cirrhosis and portal hypertension were performed SILSp.3 of them were underwent esophagogastric devascularization in total laparoscopy and 1 case in hand-assitant laparoscopic ***:The mean operative time was 231 min and mean blood loss was 425 *** the patients were ambulation in 2 days after operation and the mean time of eat ranged 2-4 *** hospital stays ranged 6-9 *** were 1 case with pleural effusion and fever and1 case with blooding,which were cured with conservative *** and gastric varices were alleviated obviously in 4 cases by 2 years ***:SILSp is feasible for splenomegaly to liver cirrhosis and portal hypertension.

关键词： Laparoscopic Splenectomy Transumbilical Single-incision

Total Laparoscopic Central Hepatectomy:Initial Experience in 3 cases

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第十九届中国科协年会——分10微创外科高峰论坛

作者： Jun XU Lei zhao Yinghui GUAN zhifei WANG Taishi FANG Department of General Surgery Fourth Hospital of Harbin Medical University Department of Hepatic surgery Zhejiang Province People's Hospital

Introduction Central hepatectomy is considered risky and technically demanding because the central liver is surrounded by many important vessels,and there are two liver resection planes,which makes the laparoscopic approach for this operative procedure even more difficult and rarely *** article demonstrates the relevant technical maneuvers in the performance of totally laparoscopic central hepatectomy under the selective inflow *** Description From June 2010 to November 2010,3 patients underwent totally laparoscopic central hepatectomy in our *** the operation,we dissected the vessels to segment Ⅴ、Ⅷ and segment Ⅳ *** the resection of segments,the hepatoduodenal ligament was skelentonized and the lesion was removed with involved *** The mean operation time was 331.7 min(210-470 min) and the mean blood loss was 1333.3 ml(800-2000 ml).The mean hospital stays were 17.0 days(10-22 days) after *** bile duct to the left lateral lobe was transected by mistake in one *** end to end anastomosis of left lateral bile duct was performed with a 10 F urethral catheter stent,through a 4.0 cm incision on right upper *** central hepatectomy can be carried out in experienced hands of laparoscopic surgeons.

关键词： Laparoscopic central liver hepatectomy

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海洋沉积物陆源碎屑粒度分析预处理方法研究

地球科学进展 2017年第7期32卷 769-780页

作者：赵绍华刘志飞同济大学海洋地质国家重点实验室上海200092

如何有效去除海洋沉积物中的非陆源物质,同时又能完好保存陆源碎屑,是获得陆源碎屑粒度变化信息的先决条件。利用南海MD190航次的深海岩芯沉积物样品,进行了不同预处理条件下的生源物质去除效果和陆源碎屑粒度分析结果的对比研究。结合... 详细信息

如何有效去除海洋沉积物中的非陆源物质,同时又能完好保存陆源碎屑,是获得陆源碎屑粒度变化信息的先决条件。利用南海MD190航次的深海岩芯沉积物样品,进行了不同预处理条件下的生源物质去除效果和陆源碎屑粒度分析结果的对比研究。结合显微镜和扫描电镜观察,获得了海洋沉积物陆源碎屑粒度分析预处理方法的新认识。结果显示,对于海洋沉积物中的有机质、碳酸盐和生物硅3种生源组分,依次使用浓度为30%的H_2O_2水浴60℃震荡3 h,0.5%的HCl充分反应1 h,2 mol/L的Na_2CO_3水浴85℃震荡5 h,可以有效去除,并能兼顾去除效率以及相对完好地保存陆源碎屑。研究认为,针对不同类型的沉积物样品进行陆源碎屑粒度分析时,应考虑生源碎屑对粒度结果的实际影响,从而选择合适的预处理方案。即在确保陆源碎屑的粒度分析结果更接近真实分布的情况下,沉积物样品的预处理步骤越少越好,并非一定要去除所有的生源成分。如当生物硅含量低于2%时,其对陆源碎屑粒度分析结果的影响很小,可不用去除。另外,超声可导致部分陆源碎屑的破碎,在粒度分析预处理过程中全程不宜使用。

关键词：陆源碎屑粒度分析预处理方法生源碎屑超声

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提高大型叶片数控加工精度技术

中国机械工程 2000年第6期11卷 631-634页

作者：章青刘又午赵小松张志飞天津大学机械工程学院天津大学精密仪器与光电子工程学院

以多体系统理论为基础 ,通过分析位移变换矩阵和位置变换矩阵 ,考虑几何误差参数、热变形误差参数和载荷误差参数 ,建立了机床空间误差综合计算模型 ,在不同类型的机床上分别对几何误差、热变形误差和载荷误差进行实验 ,结果表明加工精... 详细信息

以多体系统理论为基础 ,通过分析位移变换矩阵和位置变换矩阵 ,考虑几何误差参数、热变形误差参数和载荷误差参数 ,建立了机床空间误差综合计算模型 ,在不同类型的机床上分别对几何误差、热变形误差和载荷误差进行实验 ,结果表明加工精度可提高 50

关键词：多体系统理论误差补偿大型叶片数控加工精度