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Influence of Incomplete Soil Plugs on Bearing Capacities of Bucket Foundations in Clay

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China Ocean Engineering 2024年第1期38卷 144-155页

作者： li Hui-shan liU Run YANG Xu liAN ji-jian State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation Tianjin UniversityTianjin 300072China School of Civil Engineering Tianjin UniversityTianjin 300072China Institute of Marine Energy and Intelligent Construction Tianjin University of TechnologyTianjin 300384China

Due to the uneven seabed and heaving of soil during pumping,incomplete soil plugs may occur during the installation of bucket foundations,and the impacts on the bearing capacities of bucket foundations need to be *** this paper,the contact ratio(the ratio of the top diameter of the soil plug to the diameter of the bucket)and the soil plug ratio(the ratio of the soil heave height to the skirt height)are defined to describe the shape and size of the incomplete soil ***,finite element models are established to investigate the bearing capacities of bucket foundations with incomplete soil plugs and the influences of the contact ratios,and the soil plug ratios on the bearing capacities are *** results show that the vertical bearing capacity of bucket foundations in homogeneous soil continuously improves with the increase of the contact ***,in normally consolidated soil,the vertical bearing capacity barely changes when the contact ratio is smaller than 0.75,while the bearing capacity suddenly increases when the contact ratio increases to 1 due to the change of failure *** contact ratio hardly affects the horizontal bearing capacity of bucket ***,the moment bearing capacity improves with the increase of the contact ratio for small aspect ratios,but hardly varies with increasing contact ratio for aspect ratios larger than ***,the reduction coefficient method is proposed based on this analysis to calculate the bearing capacities of bucket foundations considering the influence of incomplete soil *** comparison results show that the proposed reduction coefficient method can be used to evaluate the influences of incomplete soil plug on the bearing capacities of bucket foundations.

关键词： bucket foundation incomplete soil plug uniaxial bearing capacity contact ratio soil plug ratio

Ovarian teratoma related anti-N-methyl-D-aspartate receptor encephalitis:A case series and review of the literature

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World Journal of Clinical Cases 2022年第16期10卷 5196-5207页

作者： shan-ji li Min-Hua Yu jie Cheng Wen-Xin Bai Wen Di Department of Obstetrics and Gynecology Ren Ji HospitalShanghai Jiao Tong University School of MedicineShanghai 200127China Center for Reproductive Medicine Shanghai Jiao Tong UniversityShanghai 200135China Department of Medicine Shanghai Jiao Tong UniversityShanghai 200025China Department of Obstetrics and Gynecology Ren Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127China shanghai Key Laboratory of Gynecologic Oncology Ren Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127China State Key Laboratory of Oncogenes and Related Genes Shanghai Cancer InstituteRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200127China

BACKGROUND Anti-N-methyl-D-aspartate receptor(NMDAR)encephalitis is a rare but important complication of ovarian *** July 2012 and December 2019,six patients with ovarian teratoma-associated anti-NMDAR encephalitis were enrolled in our hospital and their clinical characteristics,treatment,and follow-up were *** also conducted a systematic literature review of ovarian teratoma related anti-NMDAR encephalitis reports between January 2014 and December *** To better understand anti-NMDAR encephalitis through literature review and patients enrolled in our *** The six patients enrolled in the study were those diagnosed with anti-NMDAR *** history,clinical manifestations,and medications were recorded and optimum treatment provided in addition to maintaining a record of the *** addition,we also extensively surveyed the literature and provide summarized data from 155 published cases of anti-NMDAR encephalitis from 130 case *** and Scopus were the sources of these publications and the time period covered was 6 years ranging from January 2014 through December *** The six patients enrolled for this study presented with typical symptoms resulting in a diagnosis of ovarian teratoma induced anti-NMDAR *** interventions led to a positive outcome in all the patients,with five of six patients reporting full recovery and the sixth patient recovering with a few *** death was *** literature survey comprising of 155 patients cases across 130 case reports of anti-NMDAR encephalitis clearly indicated an upward trend in the reports/diagnosis in China,particularly in the surveyed time from 2014 through *** majority of patients(150/155)underwent surgical intervention resulting in positive *** treatment intervention was mentioned for one case while the four patients who were not surgically operated succumbed to the *** Suspected anti-NMDAR encepha

关键词： Ovarian teratoma Anti-N-methyl-D-aspartate receptor encephalitis Immunotherapy Surgery

Uncertainty and sensitivity analysis of in-vessel phenomena under severe accident mitigation strategy based on ISAA-SAUP program

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Nuclear Science and Techniques 2024年第1期35卷 108-123页

作者： Hao Yang ji-Shen li Zhi-Ran Zhang Bin Zhang jian-Qiang shan School of Nuclear Science and Technology Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong UniversityXi’an 710049China

The phenomenology involved in severe accidents in nuclear reactors is highly ***,integrated analysis programs used for severe accident analysis heavily rely on custom empirical parameters,which introduce considerable ***,in recent years,the field of severe accidents has shifted its focus toward applying uncertainty analysis methods to quantify uncertainty in safety assessment programs,known as“best estimate plus uncertainty(BEPU).”This approach aids in enhancing our comprehension of these programs and their further development and *** study concentrates on a third-generation pressurized water reactor equipped with advanced active and passive mitigation *** an Integrated Severe Accident Analysis Program(ISAA),numerical modeling and uncertainty analysis were conducted on severe accidents resulting from large break loss of coolant *** uncertainty parameters of the ISAA program were meticulously *** Wilks'formula,the developed uncertainty program code,SAUP,was employed to carry out Latin hypercube sampling,while ISAA was employed to execute batch *** analysis was then conducted on two figures of merit,namely hydrogen generation and the release of fission products within the pressure *** calculations revealed that hydrogen production and the fraction of fission product released exhibited a normal distribution,ranging from 182.784 to 330.664 kg and from 15.6 to 84.3%,*** ratio of hydrogen production to reactor thermal power fell within the range of 0.0578–0.105.A sensitivity analysis was performed for uncertain input parameters,revealing significant correlations between the failure temperature of the cladding oxide layer,maximum melt flow rate,size of the particulate debris,and porosity of the debris with both hydrogen generation and the release of fission products.

关键词： Gen-III PWR Severe accident mitigation Wilks’formula Hydrogen Fission products Uncertainty and sensitivity analysis

Deep Learning Social Network Access Control Model Based on User Preferences

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 1029-1044页

作者： Fangfang shan Fuyang li Zhenyu Wang Peiyu ji Mengyi Wang Huifang Sun School of Computer Science Zhongyuan University of TechnologyZhengzhou450007China Henan Key Laboratory of Cyberspace Situation Awareness Zhengzhou450001China

A deep learning access controlmodel based on user preferences is proposed to address the issue of personal privacy leakage in social ***,socialusers andsocialdata entities are extractedfromthe social networkandused to construct homogeneous and heterogeneous ***,a graph neural networkmodel is designed based on user daily social behavior and daily social data to simulate the dissemination and changes of user social preferences and user personal preferences in the social ***,high-order neighbor nodes,hidden neighbor nodes,displayed neighbor nodes,and social data nodes are used to update user nodes to expand the depth and breadth of user ***,a multi-layer attention network is used to classify user nodes in the homogeneous graph into two classes:allow access and deny *** fine-grained access control problem in social networks is transformed into a node classification problem in a graph neural *** model is validated using a dataset and compared with other methods without losing *** model improved accuracy by 2.18%compared to the baseline method GraphSAGE,and improved F1 score by 1.45%compared to the baseline method,verifying the effectiveness of the model.

关键词： Graph neural networks user preferences access control social network

Enhancing Low-Frequency Microwave Absorption Through Structural Polarization Modulation of MXenes

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Nano-Micro Letters 2024年第10期16卷 435-452页

作者： Bo shan Yang Wang Xinyi ji Yi Huang College of light Industry Science and Engineering State Key Laboratory of Biobased Fiber Manufacturing TechnologyTianjin University of Science and TechnologyTianjin 300457People's Republic of China National Institute for Advanced Materials Tianjin Key Laboratory of Metal and Molecule Based Material ChemistryKey Laboratory of Functional Polymer MaterialsCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)School of Materials Science and EngineeringNankai UniversityTianjin 300350People's Republic of China

Two-dimensional carbon-based materials have shown promising electromagnetic wave absorption capabilities in mid-and high-frequency ranges,but face challenges in low-frequency absorption due to limited control over polarization response mecha-nisms and ambiguous resonance *** this study,we pro-pose a novel approach to enhance absorption efficiency in aligned three-dimensional(3D)MXene/CNF(cellulose nanofibers)cavities by modifying polarization properties and manipulating resonance response in the 3D MXene *** controlled polarization mechanism results in a significant shift of the main absorption region from the X-band to the S-band,leading to a remarkable reflection loss value of-47.9 dB in the low-frequency ***,our findings revealed the importance of the oriented electromagnetic coupling in influencing electromagnetic response and microwave absorption *** present study inspired us to develop a generic strategy for low-frequency tuned absorption in the absence of magnetic element participation,while orientation-induced polarization and the derived magnetic resonance coupling are the key controlling factors of the method.

关键词： Hierarchical structure MXene Microwave absorption Low-frequency

Diffuse uterine leiomyomatosis: A case report and review of literature

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World Journal of Clinical Cases 2022年第24期10卷 8797-8804页

作者： Hui-Min Ren Qing-Zhu Wang jia-Nan Wang Gang-jie Hong Shuang Zhou Jun-Yan Zhu shan-ji li Department of Gynecology Zhoushan Branch Ruijin HospitalShanghai Jiaotong University School of MedicineZhoushan 316000Zhejiang ProvinceChina Department of Obstetrics and Gynecology Ningbo Hangzhou Bay HospitalNingbo 315336Zhejiang ProvinceChina Department of Pathology Zhoushan Branch Ruijin HospitalShanghai Jiaotong University School of MedicineZhoushan 316000Zhejiang ProvinceChina Department of Obstetrics and Gynecology Obstetrics and Gynecology HospitalFudan UniversityShanghai 200090China Department of Obstetrics and Gynecology Renji HospitalShanghai Jiaotong University School of MedicineShanghai 200127China

BACKGROUND Diffuse uterine leiomyomatosis(DUL)is a benign uterine smooth muscle neoplasm with unknown *** DUL is rarely reported,knowledge regarding it is *** rate of early diagnosis is low,and DUL is often misdiagnosed as common multiple uterine leiomyomas before *** SUMMARY A 27-year-old patient with no sexual activity presented to the Emergency Department of our hospital complaining of heavy vaginal *** had a history of uterine fibroids and *** examination showed a regularly enlarged uterus,similar in size to that associated with a 4-mo *** magnetic resonance imaging(MRI)revealed numerous multiple uterine fibroids,and a transabdominal myomectomy(TM)was *** exploration revealed that the myometrium was full of myoma nodules of variable *** 50 leiomyomas were *** pathology report confirmed *** patient was discharged and received a gonadotropin-releasing hormone analog(3.75 mg)for 6 *** months after surgery,the patient presented to the hospital again for abnormal uterine *** showed an irregular mass with a diameter of 5.2 cm without sharp demarcation in the uterine *** leiomyoma was considered first,and the patient underwent a hysteroscopic myomectomy plus hymen *** exploration showed that there were several leiomyomatosis masses in the *** pathological exam-ination confirmed submucosal leiomyoma and necrotic and generative *** the menstrual cycle was still irregular,the patient did not have symptoms of menorrhagia for a period of 28 mo after the second *** Individuals with DUL are easily misdiagnosed due to the lack of specific manifestations of this *** is helpful for early identification and preoperative *** is currently no unified method of *** women who want to preserve fertility,conservative surgery should be made an *** TM is

关键词： Diffuse uterine leiomyomatosis Leiomyoma Myomectomy Uterine-sparing surgery Case report

Isotopic dependence of the yield ratios of light fragments from different projectiles and their unified neutron skin thicknesses

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Nuclear Science and Techniques 2024年第3期35卷 228-236页

作者： Ting-Zhi Yan shan li School of Energy and Power Engineering Northeast Electric Power UniversityJilin 132012China

The yield ratios of neutron-proton(R(n/p))and^(3)H-^(3)He(R(^(3)H∕^(3)He))with reduced rapidity from 0 to 0.5 were simulated at 50 MeV/u even-even ^(36−56)Ca+^(40)Ca,even-even ^(48−78)Ni+^(58)Ni,and ^(100−139)Sn(every third isotopes)+112 Sn for full reduced impact parameters using the isospin-dependent quantum molecular dynamics(IQMD)*** neutron and proton density distributions and root-mean-square radii of the reaction systems were obtained using the Skyrme-Hartree-Fock model,which was used for the phase space initialization of the projectile and target in *** defined the unified neutron skin thickness asΔRnp=^(1∕2) n−^(1∕2)p,which was negative for neutron-deficient *** unifiedΔRnp values for nuclei with the same relative neutron excess from different isotopic chains were nearly equal,except for extreme neutron-rich isotopes,which is a type of scaling *** yield ratios of the three isotopic chain-induced reactions,which depended on the reduced impact parameter and unified neutron skin thickness,were *** results showed that both R(n/p)and R(^(3)H∕^(3)He)decreased with a reduced impact parameter for extreme neutron-deficient isotopes;however,they increased with reduced impact parameters for extreme neutron-rich isotopes,and increased with theΔRnp of the projectiles for all reduced impact *** addition,a scaling phenomenon was observed betweenΔR np and the yield ratios in peripheral colli-sions from different isotopic chain projectiles(except for extreme neutron-rich isotopes).Thus,R(n/p)and R(^(3)H∕^(3)He)from peripheral collisions were suggested as experimental probes for extracting the neutron or proton skin thicknesses of non-extreme neutron-rich nuclei from different isotopic chains.

关键词： Exotic nuclei Unified neutron skin thickness Yield ratios IQMD

Vanishing Viscosity limits of a Chemotaxis-Navier-Stokes Model

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Acta Mathematicae Applicatae Sinica 2024年

作者： ji-shan FAN Fu-cai li Department of Applied Mathematics Nanjing Forestry University Department of Mathematics Nanjing University

In this paper we prove vanishing viscosity limits of a coupled chemotaxis-fluid model in a bounded domain ??R3. The proof is based on the Banach’s fixed point theorem and the Lp-energy method. In addition,the L∞-est...

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Double-nylon purse-string suture in closing postoperative wounds following endoscopic resection of large(≥3 cm)gastric submucosal tumors

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World Journal of Gastroenterology 2024年第9期30卷 1143-1153页

作者： shan-shan Wang Meng-Yao ji Xu Huang Yan-Xia li Shi-jie Yu Yu Zhao Lei Shen Department of Gastroenterology Renmin Hospital of Wuhan UniversityWuhan 430000Hubei provinceChina

BACKGROUND Endoscopic full-thickness resection(EFTR)of gastric submucosal tumors(SMTs)is safe and effective;however,postoperative wound management is equally *** on suturing following EFTR for large(≥3 cm)SMTs is scarce and *** To evaluate the efficacy and clinical value of double-nylon purse-string suture in closing postoperative wounds following EFTR of large(≥3 cm)*** We retrospectively analyzed the data of 85 patients with gastric SMTs in the fundus of the stomach or in the lesser curvature of the gastric body whose wounds were treated with double-nylon purse-string sutures after successful tumor resection at the Endoscopy Center of Renmin Hospital of Wuhan *** operative,postoperative,and follow-up conditions of the patients were *** All tumors were completely resected using EFTR.36(42.35%)patients had tumors located in the fundus of the stomach,and 49(57.65%)had tumors located in the body of the *** patients underwent suturing with double-nylon sutures after EFTR without laparoscopic assistance or further surgical *** fever and stomach pain were reported in 13(15.29%)and 14(16.47%)patients,*** serious adverse events occurred during the intraoperative or postoperative periods.A postoperative review of all patients revealed no residual or recurrent *** Double-nylon purse-string sutures can be used to successfully close wounds that cannot be completely closed with a single nylon suture,especially for large(≥3 cm)EFTR wounds in SMTs.

关键词： Endoscopic full-thickness resection Purse-string suture Postoperative wounds Submucosal tumors