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Particuology 2023年第6期77卷 136-145页

作者： shenglong zhang Kai Wang Guangsheng Luo State Key Lab of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing100084China Xi'an Modern Chemistry Research Institute Xi'an710065China

To prepare uniform polystyrene particles with ten microns of diameter,a parallel scaling-up strategy for the capillary-assembled stepwise microchannel was developed,which created uniform droplets with high-throughput and formed a large amount of emulsion templates for the polymerization of styrene and *** microchannel droplet generator was robust for the flow rate deviation of the continuous phase in the jetting flow,and droplet generation frequency up to 2.8 x 104 Hz was achieved with only four parallel droplet generators,which were much more efficient than the parallelly scaled microfluidic devices working in dripping flow.32-52μm average diameter droplets with 4.5%-8.4%diameter variation coefficients were successfully prepared from the microchannel device fabricated by low-cost 3D-print method,and the droplets were subsequently turned to solid particles via a two-step polymerization in the *** polystyrene particles were further reduced to 16.9-23.5μm with 5.0%-8.6%diameter variation coefficients due to the accompanying emulsion polymerization,and the working capacity of the platform reached hundred milligrams of particles per hour.

关键词： Droplet generation Parallel scale-up Jetting flow Uniform microspheres Microfluidics

塔里木盆地顺北4号走滑断裂带分段地应力特征及裂缝分布预测

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新疆石油地质 2025年第1期46卷 1-12页

作者：黄超郭宏辉张生龙朱林涛冯建伟杜赫中国石化西北油田分公司勘探开发研究院乌鲁木齐830011 中国矿业大学(徐州)资源与地球科学学院江苏徐州221116 中国石油大学(华东)地球科学与技术学院山东青岛266580

以塔里木盆地顺北地区走滑断裂带发育背景为基础,利用地质力学理论分析顺北4号走滑断裂带不同分段地应力状态、断裂周缘裂缝系统及单井产能特征。根据纵横波测井与岩石力学实验获得的储集层力学条件,构建三维地质力学模型,并基于弹塑性... 详细信息

以塔里木盆地顺北地区走滑断裂带发育背景为基础,利用地质力学理论分析顺北4号走滑断裂带不同分段地应力状态、断裂周缘裂缝系统及单井产能特征。根据纵横波测井与岩石力学实验获得的储集层力学条件,构建三维地质力学模型,并基于弹塑性理论,利用有限元数值模拟方法,预测了走滑断控模式下目的层裂缝发育特征。研究表明,断裂带各段地应力模式不同;地质单元结构差异控制地应力分布,裂缝高密度区多呈条带状分布于断裂两侧或断裂之间;在安德森Ⅰa型、Ⅲ型地应力模式下,裂缝高密度区油气井具高产特征。明确了顺北走滑断裂带不同分段的地应力条件、裂缝发育特征及单井油气高产的主控因素。

关键词：塔里木盆地顺北地区顺北4号走滑断裂带地应力裂缝预测构造分段数值模拟

基于正交试验的废弃矿山边坡崩塌落石偏移研究

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有色金属(矿山部分) 2025年第1期77卷 166-172页

作者：刘学峰王健张胜龙中核大地生态科技有限公司北京100013 建设综合勘察研究设计院有限公司北京100007

边坡崩塌落石的横向偏移影响因素多、随机性大,使得防护工程设计的难度变大。针对废弃矿山边坡的崩塌落石规律进行研究,从而达到提高防护工程设计准确性及合理性的目的。为既突出重点又适度节省试验工作量,采用了四因素(坡度、坡长、石... 详细信息

边坡崩塌落石的横向偏移影响因素多、随机性大,使得防护工程设计的难度变大。针对废弃矿山边坡的崩塌落石规律进行研究,从而达到提高防护工程设计准确性及合理性的目的。为既突出重点又适度节省试验工作量,采用了四因素(坡度、坡长、石块大小及石块形状)、三水平的野外正交试验方法进行研究。试验结果及研究结论主要体现在四个方面:1)四个因素中,对偏移比影响较显著的是坡长,其它三个因素影响的显著性稍差、且大致均等;其中仅石块形状对偏移比影响的规律性强,即石块的形状越不规则对偏移比的影响越大,其它三个因素对偏移比的影响无直线性规律。2)工程设计所采用的偏移比不宜小于0.25。3)坡面局部覆盖土层或生长有植被时,能够减小偏移比。4)此类边坡落石的不确定性更大、规律性更弱,所以在进行工程勘察设计时,宜以现场落石试验确定偏移比。本研究在试块的选取、试验方法及场地的选择方面有一定的创新性,所得成果对此类防护工程设计具有一定的指导意义。

关键词：废弃矿山边坡崩塌落石偏移比地质灾害治理生态修复工程勘察设计

Photocatalytic Property of TiO2 Films Deposited by Pulsed DC Magnetron Sputtering

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Journal of Materials Science & Technology 2004年第1期20卷 31-34页

作者： Wenjie zhang, shenglong ZHU, Ying LI and Fuhui WANGState Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China Chinese Acad Sci Inst Met Res State Key Lab Corros & Protect Shenyang 110016 Peoples R China

TiO2 thin films were prepared by DC magnetron sputtering with the oxygen flow rate higher than the threshold. The film deposited for 5 h was of anatase phase with a preferred orientation along the direction, but the films deposited for 2 and 3 h were amorphous. The transmittance and photocatalytic activity of the TiO2 films increased constantly with increasing film thickness. When the annealing temperature was lower than 700℃, only anatase grew in the TiO2 film. TiO2 phase changed from anatase to rutile when the annealing temperature was above 800℃. The photocatalytic activity decreased with increasing annealing temperature.

关键词： TiO2 film Photocatalytic activity DC magnetron sputtering Film characteristic

电化学石英晶体微天平实时表征和定量检测短序列DNA

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化学学报 2001年第11期59卷 1989-1993页

作者：张盛龙彭图治浙江大学化学系，杭州310028

利用电化学石英晶体微天平(EQCM)这一灵敏的质量和电化学传感器测定特定序列DNA.应用自组装膜技术在压电石英晶振表面自组装一带羧基的α-硫辛酸单层膜,通过盐酸1-乙基-3-(3-二甲基氨基丙基)碳二亚胺(EDC)及N-羟基琥珀酰亚胺(NHS)共价... 详细信息

利用电化学石英晶体微天平(EQCM)这一灵敏的质量和电化学传感器测定特定序列DNA.应用自组装膜技术在压电石英晶振表面自组装一带羧基的α-硫辛酸单层膜,通过盐酸1-乙基-3-(3-二甲基氨基丙基)碳二亚胺(EDC)及N-羟基琥珀酰亚胺(NHS)共价固化寡聚核苷酸为探针,用于测定与其碱基序列互补的DNA.实验中EQCM实时监测了a-硫辛酸的自组装过程、探针固化过程及其与cDNA杂交过程.定量得出了探针固化量及cDNA杂交量.在酸性、中性和碱性条件下,分别对固化和杂交过程进行表征,实验发现探针固化及DNA杂交都受pH影响,本文对此现象进行了解释.同时,利用染料Hoechst 33258的电化学活性,使其与双链DNA嵌合,通过测定Hoeckt33258的电化学信息进一步验证了DNA杂交关键步骤.

关键词：电化学石英晶体微天平 DNA 自组装膜杂交实时表征定量检测序列检测

Analysis of tumor recurrence factors in patients of primary hepatocellular carcinoma with postoperative transcatheter arterial chemoembolization (TACE)

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The Chinese-German Journal of Clinical Oncology 2012年第4期11卷 206-209页

作者： Changzheng Wang Bin zhang Shun zhang Wentao Wang shenglong zhang Department of Hepatobililiary Surgery The Affiliated Hospital of Medical College Qjngdao UniversityOjngdao 266003China Department of Hepatobililiary Surgery Ojanfoshan HospitalJinan 250014China

Objective： The aim of the study was to analyze the tumor recurrence factors in patients of primary hepatocellular carcinoma （PHC） with postoperative transcatheter arterial chemoembolization （TACE）. Methods： A total of 121 cases of PHC by TACE after 1-2 months of surgery was retrospectively analyzed, followed up and analyzed the free survival time and the factors related to tumor-free survival. Results： In all 121 cases, 1-, 2-, and 3-year tumor-free survival rates were 72.73%, 46.21% and 26.93%, respectively. Gender, age, HBV infection, tumor size, capsule is complete, degree of differentiation and the presence of vascular thrombosis were put into the COX proportional hazards model of survival time to select the influential variables. In the clinical data of all variables entering COX proportional hazards model, tumor size, tumor differentiation and the presence of vascular thrombosis were statistically significant contributions to the model. In the tumor diameter less than or equal 10 cm [P = 0.040, Exp （B） = 2.210], vascular thrombosis [P = 0.039, Exp （B） = 2.922] and the lower degree of tumor differentiation [P = 0.035, Exp （B） = 3.038], the risk of tumor recent recurrence increased. Conclusion： Tumor size, differentiation, and the presence of vascular thrombosis are the independent risk factors affecting the prognosis of PHC after TACE.

关键词： Primary hepatocellular carcinoma (PHC) liver resection transcatheter arterial chemoembolization (TACE) free survival

Uncertainty Analysis in CFD for Resistance

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Journal of Shipping and Ocean Engineering 2017年第5期7卷 192-202页

作者： WANG Zhongcheng LIU Xiaoyu zhang shenglong XU Leping ZHOU Peilin MMC of Shanghai Maritime University Shanghai 201306 China Strathclyde University Glasgow G40LZ UK

Based on the Latin square design of statistics, the thickness of first boundary layer, the turbulence model and the cell number were taken as the three main factors of uncertainty in CFD （computational fluid dynamics）. Total resistance of hull was calculated and the flow field around the hull was simulated by CFD method. Then, the influence of uncertainty factors on the hull resistance was discussed by regression analysis with trimmed mesh and overset mesh. Through a series of calculation and analysis, the optimal calculation method was put forward, and the relevant parameters of the calculation were determined. Thirdly, the total resistance of different speed was calculated by using these two kinds of grids, which were in good agreement with the experimental results. Finally, according to the ITTC recommended procedures, uncertainty analysis in CFD was carried out with the numerical results of the total resistance by three sets of grids with uniform refinement ratio rG = √2. Then the modified resistance was compared with the experimental result, which improved the accuracy of the resistance prediction.

关键词： Resistance prediction Latin square design regression analysis trimmed mesh overset mesh.

Surgical treatment and prognosis of cancers of hepatic flexure of colon invading the duodenum in 65 patients

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The Chinese-German Journal of Clinical Oncology 2011年第3期10卷 166-169页

作者： Weiliang Yang shenglong Li Lei zhang Fujing Wang Yulin Ma Department of General Surgery The Second Affiliated Hospital of Harbin Medical University Harbin 150086 China

Objective： The aim of the study was to discuss surgical treatment of right colon carcinoma of hepatic flexure invading the duodenum. Methods： The 65 patients with right colon carcinoma of hepatic flexure invading the duodenum, treated in our department from 1987 to 2007, were included in this study. Their clinicopathological data were retrospectively reviewed and analyzed. All the cases were divided into three types （local invasion, regional invasion, and cancer with internal fistula） according to duodenal defect, including local invasion （ 2.0 cm）, wide invasion （ 2.0 cm） and the presence of internal fistula. Results： The 25 patients with local invasion underwent en bloc resection of the duodenal wall. Pedicled ileal flap was used to cover the large duodenal defect measuring 2.0–3.0 cm in 5 patients. Dudenojejunostomy was used to reconstruct the large defect measuring more than 5 cm in 3 patients. Conservative resection of right-sided colon was performed in 18 patients with wide invasion. Four patients underwent pancreaticoduodenectomy combined with right hemicolectomy for colon cancer involving the pancreatic head. Ten cases underwent duodenal diverticularization. One patient with anastomotic leakage healed within 3 weeks. Other patients were cured without postoperative complications. The total 3-and 5-year survival rates after surgery were 53.8% and 9.2%, respectively. Conclusion： The surgical procedure to be performed is usually decided according to the cancer location, extent, and duodenal defect and invasion, which are important for prolonging life time, improving of quality of life and prognosis in these patients.

关键词： colonic neoplasms pancreatoduodenectomy prognosis

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复杂环境下地铁明挖深基坑的爆破施工

城市轨道交通研究 2010年第2期13卷 65-67,72页

作者：张胜龙中铁十三局集团有限公司南京公司工程师南京210011

南京地铁孝陵卫车站基坑开挖工程的石方工程量大,环境复杂,工期紧,采用中深孔分阶分段微差松动爆破方案,可以充分发挥大型机械设备的优势。在爆破实施时采取一系列技术安全措施,确保了施工安全和施工进度,取得了良好的社会效益和经济效益。

关键词：地铁基坑施工中深孔爆破

12月和2月热带太平洋海温与东亚水汽输送关系的年代际变化机制

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大气科学 2023年第4期47卷 975-994页

作者：张胜龙孙博陈平清华大学地球系统科学系教育部地球系统模拟重点实验室北京100084 南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心南京210044 南方海洋科学与工程广东省实验室珠海519080 中国气象局乌鲁木齐沙漠气象研究所乌鲁木齐830002

利用1950~2019年NCEP/NCAR大气再分析资料、NOAA海表面温度资料以及ERA5垂直积分水汽通量资料,分析了12月和2月热带中东太平洋海温与东亚水汽输送关系的年代际变化。结果表明,12月东亚上空经向水汽输送与热带中东太平洋海温的相关性在1... 详细信息

利用1950~2019年NCEP/NCAR大气再分析资料、NOAA海表面温度资料以及ERA5垂直积分水汽通量资料,分析了12月和2月热带中东太平洋海温与东亚水汽输送关系的年代际变化。结果表明,12月东亚上空经向水汽输送与热带中东太平洋海温的相关性在1980年代中期之前较弱,1980年代中期之后二者呈显著正相关;2月二者关系在1950~1970年和1990~2010年呈显著正相关。12月二者关系年代际变化的主要原因是热带太平洋海温通过太平洋—东亚(PEA)遥相关型和环北半球遥相关型对东亚水汽输送的影响在1980年代中期之后增强;当热带中东太平洋海温偏暖(冷)时,影响PEA遥相关型和环北半球遥相关型,导致东亚自南向北的水汽输送异常增强(减弱)。与12月不同的是,2月二者关系在1950~1970和1990~2010年主要受PEA遥相关型影响。而在1971~1989期间,2月二者关系受环北半球遥相关型影响;当热带太平洋海温偏冷(暖)时,影响环北半球遥相关型,导致东亚经向水汽输送异常增强(减弱),该机制可以部分抵消PEA机制对东亚水汽输送的影响,导致二者关系在此期间不显著。此外1990年之后,热带印度洋海温对12月和2月东亚经向水汽输送的影响增强,在12月热带印度洋海温主要通过“开尔文波—埃克曼辐散”效应影响东亚经向水汽输送,而在2月主要通过印度洋上的沃克环流影响东亚经向水汽输送。

关键词：水汽输送热带太平洋海温太平洋—东亚遥相关环北半球遥相关