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华龙一号国际审查认证中结构完整性领域的实践和思考

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核动力工程 2024年第2期45卷 1-9页

作者：毛庆张涛徐晓岑鹏王国锋核电安全技术与装备全国重点实验室广东深圳518172 深圳中广核工程设计有限公司广东深圳518172 中广核工程有限公司广东深圳518172

为促进国际市场开发,中国广核集团有限公司开展了华龙一号核电技术方案英国通用设计审查(gda)和欧洲用户要求认证(EUR)。核电厂构筑物、系统和设备的结构完整性是国际审查和认证的重点,为适应英国核安全监管和欧洲用户要求,项目团队采... 详细信息

为促进国际市场开发,中国广核集团有限公司开展了华龙一号核电技术方案英国通用设计审查(gda)和欧洲用户要求认证(EUR)。核电厂构筑物、系统和设备的结构完整性是国际审查和认证的重点,为适应英国核安全监管和欧洲用户要求,项目团队采用分析法设计理念,以力学分析、试验和论证为关键手段,完成了英国版和欧洲版华龙一号的结构完整性分析评估和设计改进,全面满足了英国核安全监管和欧洲用户要求。通过华龙一号国际审查和认证,研究了结构完整性领域的相关技术要求,总结了审查过程中的实践和思考,可为华龙一号核电技术方案的持续改进和创新提供借鉴。

关键词：华龙一号(HPR1000) 英国通用设计审查(gda) 欧洲用户要求认证(EUR) 结构完整性(SI)

Efficient conversion of CO_(2) into cyclic carbonates under atmospheric by halogen and metal-free poly(ionic liquid)s

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Chinese Journal of Chemical Engineering 2023年第3期55卷 202-211页

作者： Bowen Jiang Jia Liu Guoqiang Yang Zhibing zhang School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210093China

A novel series of halogen free, hydroxyl group containing poly(ionic liquid)s(PILs) was first synthesized from glycerol dimethyl acrylate(gda) and 1-vinyl imidazole(1-VIM) through free radical polymerization, follow by an alkylation step and an ion-exchange procedure to form the final imidazolium hydrogen carbonate heterogenous catalyst poly(HCO_(3)-OH-n). The chemical and physical properties were investigated by varying the monomer ratio between gda and 1-VIM. Among them, poly(HCO_(3)-OH-2) exhibited the highest catalytic activity for CO_(2)cycloaddition, with the yield of chloropropene carbonate 90% under mild conditions(80℃, 0.1 MPa, 12 h, 0.15 g catalyst for 32 mmol epichlorohydrin) in the absence of any cocatalyst, metal or solvent. A range of substrates with good to excellent yields under atmosphere was obtained. The poly(HCO_(3)-OH-n) catalyst is collectable and still remains acceptable catalytic activity after six runs. Finally, a preliminary kinetic is calculated on the basis of poly(HCO_(3)-OH-2) with the activation energy value of 79.5 kJ·mol^(-1). This study highlights that the poly(HCO_(3)-OH-n) enable to reach efficient CO_(2) conversion under mild conditions.

关键词： Ion exchange Carbon dioxide Polymerization Heterogeneous catalyst Kinetic modeling

Gastroduodenal artery disconnection during liver transplantation decreases non-anastomotic stricture incidence

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Hepatobiliary & Pancreatic Diseases International 2023年第1期22卷 28-33页

作者： Bi Pan Wei Liu Yan-Jiao Ou Yan-Qi zhang Di Jiang Yuan-Cheng Li Zhi-Yu Chen Lei-Da zhang Cheng-Cheng zhang Department of Hepatobiliary Surgery Southwest HospitalThird Military Medical University(Army Medical University)Chongqing 400038China Department of Health Statistics College of Military Preventive MedicineThird Military Medical University(Army Medical University)Chongqing 400038China

Background:The hepatic artery is the only blood source nourishing the biliary duct and associated with biliary complication after liver transplantation(LT).Gastroduodenal artery(gda)disconnection increased proper hepatic artery *** this procedure attenuates biliary non-anastomotic stricture(NAS)is not ***:A total of 241 patients with LT were retrospectively *** patients were divided into the gda disconnection(gda-)and gda preservation(gda+)*** score matching(PSM)was administrated to reduce *** regression was conducted to analyze risk factors for biliary NAS before and after *** complications were ***-Meier survival analysis and log-rank tests were performed to compare overall ***:In all,99 patients(41.1%)underwent gda disconnection,and 49(20.3%)developed *** logistic regression revealed that gda preservation(OR=2.24,95%CI:1.11-4.53;P=0.025)and model for end-stage liver disease(MELD)score>15(OR=2.14,95%CI:1.12-4.11;P=0.022)were risk factors for biliary *** provided 66 pairs using 1:2 matching method,including 66 gda disconnection and 99 gda preservation *** logistic regression after PSM also showed that gda preservation(OR=3.15,95%CI:1.26-7.89;P=0.014)and MELD score>15(OR=2.41,95%CI:1.08-5.36;P=0.031)were risk factors for *** comparing complications between the two groups,gda preservation was associated with a higher incidence of biliary NAS before and after PSM(P=0.031 and 0.017,respectively).In contrast,other complications including early allograft dysfunction(P=0.620),small-for-size graft syndrome(P=0.441),abdominal hemorrhage(P=1.000),major complications(Clavien-Dindo grade≥3,P=0.318),and overall survival(P=0.088)were not significantly different between the two ***:gda disconnection during LT ameliorates biliary NAS incidence and may be recommended for application in clinical practice.

关键词： Liver transplantation Biliary complication Gastroduodenal artery disconnection Hepatic artery hyperperfusion

Trace Elements in Leccinum scabrum Mushrooms and Topsoils from K odzka Dale in Sudety Mountains, Poland

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Journal of Mountain Science 2013年第4期10卷 621-627页

作者： zhang Dan zhang Yu MORAWSKA Ewa BIELAWSKI Leszek KRASINSKA Grazyna DREWNOWSKA Ma gorzata PANKAVEC Sviatlana SZYMANSKA Karolina FALANDYSZ Jerzy Key Laboratory of Mountain Environmental Diversity & Control Institute of Mountain Hazards and Environment Chinese Academy of Sciences Institute of Environmental Sciences & Public Health University of Gdańsk 19 Sobieskiego Str.80-952 Gdańsk Poland

In the current study, we determined concentrations and transfer rates of Ag, Al, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, P, Rb, Sr and Zn to Brown Birch Scaber Stalks （Leccinum scabrum） mushrooms emerged in the area of Sudety Mountains （Sudetes） in Poland. Fruiting bodies and topsoil samples beneath L. scabrum were collected form the Ktodzka Dale. The trace elements were determined using validated method and inductively coupled plasma - atomic emission spectroscopy （ICP-AES） for final measurement. Mushrooms contained Ag, Cr, Hg, Co, Ni and Sr at 〈 1.0μg/g dry weight; Ba and Pb at -1.0μg/g dw; Cd at 〈 5μPg/g dw; Cu and Mn at 〉 10 μg/g dw; Al and Ca at -100μg/g dw; Fe, Na, Rb and Zn at lOO to 500μg/g dw, Mg at -1.000μg/g dw; P at -5,000 μg/g dw and K at -30,000 μg/g dw. Ca, Mn and Ni were nearly equally distributed between stipes and caps; stipes compared to caps were enriched in Ba, Na and Sr, while caps were enriched in Ag, Al, Cd, Co, Cr, Cu, Fe, K, P, Pb, Rb and Zn. The values of bioconcentration factor （BCF） varied highly depending on chemical element and were 〉1 for Ag, Cd, Cu, K, Mg, Na, P, Rb and Zn, while 〈1 for A1, Ba, Ca, Co, Cr, Fe, Mn, Ni, Pb and Sr. Topsoil showed elevated content of lead and mean concentration was 99 ± 32 μg/g dw, while cadmium was at 0.41 ± 0.15 and those two highly toxic to human elements occurred in edible caps of L. scabrum at 4.5 ± 2.2 and 2.9 ± 2.0 μg/g dw, respectively.

关键词： Food Fungi Metallic elements Soil Sudetes Wild food

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热/冷喷涂典型抗空蚀涂层结构与性能研究

中国材料进展 2024年第4期43卷 281-289,300页

作者：刘伟杰武三栓何春艳褚欣刘敏张楠楠谢迎春沈阳工业大学材料科学与工程学院辽宁沈阳110870 广东省科学院新材料研究所现代材料表面工程技术国家工程实验室广东省现代表面工程技术重点实验室广东广州510651 中国航发南方工业有限公司湖南株洲412002

冷喷涂作为近年来兴起的涂层固态沉积技术,所制备的涂层具有高结合强度、高硬度、无氧化夹杂等优点,在过流器械表面的空蚀损伤防护方面极具应用潜力。采用冷喷涂技术,在40Cr钢基体表面制备了高致密的CuAl9Fe1铝青铜抗空蚀涂层,利用光镜... 详细信息

冷喷涂作为近年来兴起的涂层固态沉积技术,所制备的涂层具有高结合强度、高硬度、无氧化夹杂等优点,在过流器械表面的空蚀损伤防护方面极具应用潜力。采用冷喷涂技术,在40Cr钢基体表面制备了高致密的CuAl9Fe1铝青铜抗空蚀涂层,利用光镜/扫描电镜、显微硬度计、超声波空蚀试验机、三维轮廓仪等设备,表征了涂层的微观结构、力学性能及抗空蚀性能,分析了涂层的空蚀破坏形貌及机理,并与超音速火焰(high-velocity oxygen-fuel,HVOF)喷涂制备的WC类典型抗空蚀涂层(WC-Co-Cr和WC-Cr_(2)C_(3)-Ni)进行了对比。结果表明,冷喷涂CuAl9Fe1涂层的平均孔隙率为1.4%,平均显微硬度为3126 MPa,平均结合强度为32.3 MPa,空蚀6 h的空蚀深度为4.988μm;与之相比,HVOF喷涂的WC-Co-Cr和WC-Cr_(2)C_(3)-Ni涂层的平均孔隙率分别为0.7%和1.6%,平均显微硬度分别为10 065和10 094 MPa,平均结合强度分别为84.2和73.5 MPa,空蚀6 h的空蚀深度分别为11.901和10.645μm。冷喷涂CuAl9Fe1涂层虽硬度较低,但塑韧性较好,可有效抑制空蚀过程中颗粒结合界面的裂纹萌生、扩展导致的颗粒脱落,因此相比HVOF制备的WC类涂层具有更高的抗空蚀性能。

关键词：冷喷涂铝青铜涂层超音速火焰喷涂 WC基涂层抗空蚀性能

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Impact of the Built Environment on the Spatial Heterogeneity of Regional Innovation Productivity:Evidence from the Pearl River Delta,China

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Chinese Geographical Science 2021年第3期31卷 413-428页

作者： WU Kangmin WANG Yang zhang Hong’ou LIU Yi YE Yuyao Key Lab of Guangdong for Utilization of Remote Sensing and Geographical Information System Guangdong Open Laboratory of Geospatial Information Technology and ApplicationGuangzhou Institute of GeographyGuangdong Academy of SciencesGuangzhou 510070China Institute of Strategy Research for Guangdong Hong Kong and Macao Greater Bay AreaGuangzhou 510070China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China

With the global economy increasingly dependent on innovation,urban discourse has shifted to consider what kinds of spatial designs may best nurture *** examined the relationship between the built environment and the spatial heterogeneity of regional innovation productivity(RIP)using the example of China's Pearl River Delta(PRD).Based on a spatial database of 522546 patent data from 2017,this study proposed an innovation-based built environment framework with the following five aspects:healthy en-vironment,daily interaction,mixed land use,commuting convenience,and technology *** negative binomial regression and Geodetector to examine the impact of the built environment on RIP,the results show that the spatial distribution of innovation productivity in the PRD region is extremely *** negative binomial regression results show that the built environment has a significant impact on the spatial differentiation of RIP,and,specifically,that healthy environment,mixed land use,commuting convenience,and technology atmosphere all demonstrate significant positive ***,the Geodetector results show that the built environment factor impacts the spatial heterogeneity of RIP to varying degrees,with technology atmosphere demonstrating the greatest impact *** conclude that as regional development discourse shifts focus to the knowledge and innovation economy,the innovation-oriented design and updating of built environments will become extremely important to policymakers.

关键词： built environment innovation productivity patent spatial heterogeneity Pearl River Delta

Low-Strain Damage Imaging Detection Experiment for Model Pile Integrity Based on HHT

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Structural Durability & Health Monitoring 2023年第6期17卷 557-569页

作者： Ziyang Jiang Ziping Wang Kan Feng Yang zhang Rahim Gorgin Faculty of Civil Engineering and Mechanics Jiangsu University and National Center for International Research on Structural Health Management of Critical ComponentsZhenjiang212013China Institute of Fluid-Flow Machinery Polish Academy of SciencesGdańsk80-231Poland

With the advancement of computer and mathematical techniques,significant progress has been made in the 3D modeling of foundation *** methods include the 3D semi-analytical model for non-destructive low-strain integrity assessment of large-diameter thin-walled pipe piles and the 3D soil-pile dynamic interaction ***,these methods have complex analysis procedures and substantial *** paper introduces an innovative and streamlined 3D imaging technique tailored for the detection of pile *** approach harnesses the power of an eight-channel ring array transducer to capture internal reflection signals within foundation *** acquired signals are subsequently processed using the Hilbert-Huang Transform(HHT),a robust analytical tool known for its effectiveness in handling non-stationary *** the development of a sophisticated multi-channel ring array imaging algorithm,this technique empowers engineers and researchers to identify various pile defects,including their specific type,precise location,and obtain detailed 3D imaging *** findings of this research offer a valuable blend of theoretical insights and practical guidance,significantly advancing the state-of-the-art in the realm of concrete pile integrity *** simplifying and enhancing the assessment process,this innovative approach not only addresses the complexities of existing methods but also contributes to the overall safety and reliability of concrete engineering structures.

关键词： Pile integrity inspection annular array imaging HHT

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卵巢成熟畸胎瘤恶变的预后规律

实用癌症杂志 2000年第6期15卷 617-619页

作者：张彦娜李孟达中山医科大学肿瘤防治中心妇科 510060

目的　探讨卵巢成熟畸胎瘤恶变的生物学特性及预后规律。方法　对 18例卵巢成熟畸胎瘤恶变的生存率、平均缓解时间、复发转移规律及预后影响因素进行分析 ,以同期治疗的 35例卵巢未成熟畸胎瘤作对照。结果　卵巢成熟畸胎瘤恶变的中位发... 详细信息

目的　探讨卵巢成熟畸胎瘤恶变的生物学特性及预后规律。方法　对 18例卵巢成熟畸胎瘤恶变的生存率、平均缓解时间、复发转移规律及预后影响因素进行分析 ,以同期治疗的 35例卵巢未成熟畸胎瘤作对照。结果　卵巢成熟畸胎瘤恶变的中位发病年龄较未成熟畸胎瘤晚 10年 ,3、5、10年生存率较卵巢未成熟畸胎瘤低 (P <0 .0 5 ) ,术后复发转移率较卵巢未成熟畸胎瘤高(P <0 .0 5 ) ,术后平均缓解时间较未成熟畸胎瘤短 (P <0 .0 5 )。行全子宫双附件及大网膜切除较单侧附件切除术者平均缓解时间长 (P <0 .0 5 ) ,术后 7天内开始化疗及术后无残留者平均缓解时间长 (P <0 .0 5 ) ,5年生存率高 (P <0 .0 5 )。结论　卵巢成熟畸胎瘤恶变发病年龄较未成熟畸胎瘤晚 10年 ,且恶性度高 ,术后易发生复发转移。行基本卵巢癌手术术式、术后 7天内开始化疗、术后无肿瘤残留者可显著提高疗效。

关键词：卵巢成熟畸胎瘤恶变预后卵巢肿瘤生物学特性

Constructing dataset of classified drainage areas based on surface water-supply patterns in High Mountain Asia

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Big Earth Data 2020年第3期4卷 225-241页

作者： Jieyu Lu Yubao Qiu Xingxing Wang Wenshan Liang Pengfei Xie Lijuan Shi Massimo Menenti Dongshui zhang School of Resource&Environment and Safety Engineering Hunan University of Science and TechnologyXiangtanHunanChina Key Laboratory of Digital Earth Sciences Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina AIR-FMI Joint Research Center for Arctic Observations Aerospace Information Research InstituteChinese Academy of Sciencesand Finnish Meteorological InstituteSodankyläFinland Department of Geoscience and Remote Sensing Civil EngineeringDelft University of TechnologyDelftThe Netherlands

The High Mountain Asia(HMA)region,ranging from the Hindu Kush and Tien Shan in thewest totheHimalaya inthe southwith an altitude between 2000 and 8844 m,holds the largest reservoir of glaciers and snow outside Earth Polar *** the last decades,numerous glaciers and lake areas there have undergone tremendous changes with water *** order to increase understanding of the pattern of distribution of water resources,and their dynamic changes at the basin scale,a watershed classification based on the water replenishment patterns dataset was *** input dataset are from the Randolph Glacier Inventory V.6.0 and the vector data of rivers and *** datasets were thus obtained:Glacier-fed and Runoff-fed Drainage Area(GRDA),Glacier-fed and Runoff-free Drainage Area(gda),Glacier-free and Runoff-fed Drainage Area(RDA),and the Glacier-free and Runoff-free Drainage Area(NGRDA),and the numbers of these four types of basins are 87,107,32,and 448 *** statistical results show GRDA has the largest surface area,accounting for 82.2%of the total basin area in HMA,mainly in the region of the basin with outflow rivers or *** by small basins,the gda area accounts for the smallest area,only 3.86%and the RDA accounts for 5.62%.For NGRDA,most are with small areas,accounting for 8.32%,and mainly distributes in the closed basin of the Qiangtang *** dataset provides a fundamental classified data source for research on water resources,climate,ecology,and environment in *** published data are available at https://***/download/uuid:d07d748f-d10b-4308-9626-199ef05cc9af/and http://***/10.11922/sciencedb.923.

关键词： High Mountain Asia water resources glacial recharge watershed classification surface water system