检索结果-南通市图书馆

World Journal of Clinical Cases 2023年第13期11卷 3052-3061页

作者： hui-li zhang Song-Yuan Yu Chuan-Wu Cao Jing-E Zhu Jia-Xin li li-Ping Sun hui-Xiong Xu Department of Medical Ultrasound Center of Minimally Invasive Treatment for TumorShanghai Tenth People’s HospitalShanghai 200072China Department of Interventional and Vascular Surgery Shanghai Tenth People’s HospitalShanghai 200072China Department of Ultrasound Zhongshan HospitalShanghai 200032China

BACKGROUND Vaginal myomectomy is the most common form of radical treatment for prolapsed submucosal leiomyoma and is typically performed under general ***,an alternative treatment approach is needed for patients who cannot tolerate general *** describe a case with such a patient who was successfully treated via a minimally invasive method under local *** SUMMARY A 46-year-old female suffered from abnormal uterine bleeding,severe anemia,and a reduced quality of life attributed to a massive prolapsed submucosal *** could not tolerate general anesthesia due to a congenital thoracic malformation and cardiopulmonary insufficiency.A new individualized combined treatment,consisting uterine artery embolization(UAE),percutaneous microwave ablation(PMWA)of the pedicle and the endometrium,and transvaginal removal of the leiomyoma by twisting,was *** lesion was completely removed successfully under local anesthesia without any major *** postoperative follow-up showed complete symptom relief and a significant improvement in the quality of *** UAE combined with PMWA can be performed under local anesthesia and is a promising alternative treatment for patients who cannot tolerate general anesthesia.

关键词： Submucous leiomyoma Percutaneous microwave ablation Uterine artery embolism Transvaginal myomectomy Case report

Data complexity-based batch sanitization method against poison in distributed learning

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Digital Communications and Networks 2024年第2期10卷 416-428页

作者： Silv Wang Kai Fan Kuan zhang hui li Yintang Yang State Key Laboratory of Integrated Service Networks Xidian UniversityXi'an710126China Department of Electrical and Computer Engineering University of Nebraska-LincolnLincolnNE68588USA Key Lab.of the Minist.of Educ.for Wide Bandgap Semiconductor Materials and Devices Xidian UniversityXi'an710071China

The security of Federated Learning(FL)/Distributed Machine Learning(DML)is gravely threatened by data poisoning attacks,which destroy the usability of the model by contaminating training samples,so such attacks are called causative availability indiscriminate *** the problem that existing data sanitization methods are hard to apply to real-time applications due to their tedious process and heavy computations,we propose a new supervised batch detection method for poison,which can fleetly sanitize the training dataset before the local model *** design a training dataset generation method that helps to enhance accuracy and uses data complexity features to train a detection model,which will be used in an efficient batch hierarchical detection *** model stockpiles knowledge about poison,which can be expanded by retraining to adapt to new *** neither attack-specific nor scenario-specific,our method is applicable to FL/DML or other online or offline scenarios.

关键词： Distributed machine learning security Federated learning Data poisoning attacks Data sanitization Batch detection Data complexity

Particle segregation mechanism of S–D system in a rotating drum

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2024年第10期93卷 300-308页

作者： Erliang Xiao Wei zhang Zhipeng Chi Ran li hui Yang School of Optical-Electricaland Computer Engineering University of Shanghai for Science and Technology Shanghai 200093Chin Collegeof Medical instrumentation hanghai Universty of Medicine&Health ScienceShanghaiChina

Complex segregation occurs in a binary particle system with differing particle sizes and densities,particularly when the larger particles are heavier(S–D system,i.e.,size minus density system).Predicting the segregation pattern driven by multiple mechanisms simultaneously is often *** study explores the segregation mechanisms in a quasi-2D circular drum containing a S–D system,realizing a transition between the S-core and Core-and-band patterns by adjusting the drum rotation *** the transition of the segregation pattern,only the S-core pattern chiefly driven by the percolation mechanism is initially *** the rotation speed increases,the buoyancy mechanism and particle diffusion gradually strengthen,jointly driving the formation of the Core-and-band pattern.A dimensionless strength ratio,λ=H/h,where H and h respectively represent the diffusion and buoyancy strengths at length scales,is introduced to elucidate this *** Core-and-band pattern emerges whenλreached 1.4.

关键词： Particle segregation S-Dsystem Segregationmechanisms competition Segregation pattern Rotating drum

Solvation Engineering via Fluorosurfactant Additive Toward Boosted lithium-Ion Thermoelectrochemical Cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第4期16卷 253-268页

作者： Yinghong Xu Zhiwei li Langyuan Wu hui Dou Xiaogang zhang Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Material Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 211106People’s Republic of China

lithium-ion thermoelectrochemical cell(LTEC), featuring simultaneous energy conversion and storage, has emerged as promising candidate for low-grade heat harvesting. However, relatively poor thermosensitivity and heat-to-current behavior limit the application of LTECs using liPF_6 electrolyte. Introducing additives into bulk electrolyte is a reasonable strategy to solve such problem by modifying the solvation structure of electrolyte ions. In this work, we develop a dual-salt electrolyte with fluorosurfactant(FS) additive to achieve high thermopower and durability of LTECs during the conversion of low-grade heat into electricity. The addition of FS induces a unique li~+ solvation with the aggregated double anions through a crowded electrolyte environment,resulting in an enhanced mobility kinetics of li~+ as well as boosted thermoelectrochemical performances. By coupling optimized electrolyte with graphite electrode, a high thermopower of 13.8 mV K^(-1) and a normalized output power density of 3.99 mW m^(–2) K^(–2) as well as an outstanding output energy density of 607.96 J m^(-2) can be *** results demonstrate that the optimization of electrolyte by regulating solvation structure will inject new vitality into the construction of thermoelectrochemical devices with attractive properties.

关键词： Solvation engineering Fluorosurfactant Ionic thermoelectric lithium-ion thermoelectrochemical cell Low-grade heat

Double-hit lymphoma (rearrangements of MYC, BCL-2) during pregnancy: A case report

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2021年第2期9卷 482-488页

作者： Fan Xie li-hui zhang Ya-Qing Yue Lu-Lu Gu Fei Wu Department of Obstetrics and Gynecology The Second Hospital of Jilin UniversityChangchun 130041Jilin ProvinceChina

BACKGROUND Double-hit lymphoma is a highly aggressive B-cell lymphoma that is genetically characterized by rearrangements of MYC and BCL2 and/or *** is often accompanied by atypical systemic symptoms similar to physiological changes during pregnancy and is often ***,we describe a gravid patient with high-grade B-cell lymphoma with a MYC and BCL-2 gene rearrangement involving multiple parts of the *** SUMMARY A 32-year-old female,gestational age 22+5 wk,complained of abdominal distension,chest tightness and limb weakness lasting approximately 4 wk,and ovarian tumors were found 14 d *** examinations and a trimanual gynecologic examination suggested malignant ovarian tumor and frozen *** with rapid progression,severe compression symptoms of hydrothorax,ascites and moderate anemia,labor was ***,biopsy and imaging examinations showed high-grade B-cell lymphoma with a MYC and BCL-2 gene rearrangement involving multiple parts of the *** was referred to the Department of Oncology and Hematology for *** of multiple recurrences after complete remission,chemotherapy plans were continuously *** present,the patient remains in treatment and *** The early detection and accurate diagnosis of lymphoma during pregnancy can help expedite proper multidisciplinary treatment to delay disease progression and decrease the mortality rate.

关键词： Ovarian neoplasms Double-hit lymphoma Lymphoma,non-Hodgkin Pregnancy Case report Multidisciplinary treatment

Resistance to salt stresses by aerobic granular sludge:sludge property and microbial community

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2024年第8期18卷 107-116页

作者： Xiao Wu hui li Meili Wang Tianying zhang Jiawei li Yongdi liu Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission School of Chemistry and EnvironmentSouthwest Minzu UniversityChengdu 610041China Institute for Environmental Pollution and Health School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China School of life Sciences Southwest UniversityChongqing 400715China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental EngineeringEast China University of Science and TechnologyShanghai 200237China Institute of Qinghai-Tibetan Plateau Southwest Minzu UniversityChengdu 610041China

Saline wastewater is regarded as a challenge for wastewater treatment plants because high-salinity conditions negatively affect on traditional biological *** granular sludge(AGS)has gained attention as a promising technology for saline wastewater treatment because of its compact structure and the ability to withstand toxic ***,this study investigated the saltresistance performance,sludge properties and microbial community of AGS under low-salinity and high-salinity conditions,with the saline concentrations ranging from 0 to 50 g/*** results showed that AGS could withstand long-term saline stresses,and the maximum salinity reached 50 g/L within 113 *** salinities of 10,30,and 50 g/L,the chemical oxygen demand(COD)removal efficiencies were 90.3%,88.0%and 78.0%,*** also its maintained strength and aggregation at salinities of 10 and 30 g/*** of extracellular polymeric substances(EPS)by non-halophilic bacteria that enhanced sludge *** compact structure that ensured the microorganisms bioactivity helped to remove organic matters under salinities of 10 and 30 g/*** a salinity of 50 g/L,moderately halophilic bacteria,including Salinicola,Thioclava,Idiomarina and Albirhodobacter,prevailed in the *** dominant microbial communities shifted to moderately halophilic bacteria,which could maintain aerobic granular stabilization and remove organic matters under 50 g/L *** results in this study provide a further explanation for the long-term operation of AGS for treating saline wastewater at different *** is hoped that this work could bring some clues for the mystery of salt-resistance mechanisms.

关键词： Aerobic granular sludge Long-term saline stresses Performance Sludge property Microbial community

CO_(2) corrosion of X80 steel welded joints under micro-turbulence induced by welding reinforcement height

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2024年第4期31卷 1015-1032页

作者： Xiao-hui Dou Bin li Zong-hao He Xin-wei zhang Da-lei zhang Yan li School of Materials Science and Engineering China University of Petroleum(East China)Qingdao 266580ShandongChina School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina

Corrosion failure accidents owing to flow erosion and pipeline corrosion frequently occur during *** welding reinforcement height(WRH)can induce locally micro-turbulent flow field,which aggravates local corrosion of welded joints.A high wall shear stress(WsS)experimental setup was established to conduct the online electrochemical corrosion *** influence of WRH sizes on local corrosion of welded joints was studied at different flow *** electrochemical signals of the local corrosion of X80 welded joints at different flow rates were monitored in real time using electrochemical impedance spectroscopy and wire beam *** addition,the corrosion products composition and properties were *** results show that the micro-turbulent flow fields induced by the WRHs can enhance ion mass transfer near the welded *** corrosion products on the WRH surface also present different microscopic morphologies at different flow *** strong flow fields,the locally enhanced wsS can peel off the dense corrosion product partially,leading to the electrochemical distribution of large cathode and small anode,which accelerates the occurrence and development processes of the local corrosion of welded *** scientific guidelines for the corrosion protection of long-distance oil and gas pipelines can be potentially provided.

关键词： X80 steel welded joint Welding reinforcement height Micro-turbulence CO_(2)corrosion-Ion mass transfer

Large deflection deformation behavior of a Zr-based bulk metallic glass for compliant spinal fixation application

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2024年第6期173卷 86-99页

作者： Diao-Feng li Chun-Guang Bai Zhi-Qiang zhang hui-Bo zhang Nan li Jian Zhao Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

A novel compliant spinal fixation designed based on the concept of compliant mechanisms can reduce the stress-shielding effect and adjacent segment degeneration(ASD)effectively,but propose higher requirements for the properties of the used *** metallic glasses(BMGs),as a kind of young biomaterials,exhibiting excellent comprehensive properties,which are attractive for compliant spinal ***,according to the practical service condition of the basic elements in compliant spinal fixation,large deflection deformation behaviors of Zr_(61)Ti_(2)Cu_(25)Al_(12)(at.%,ZT1)BMG beam,including elastic,yielding and plastic were investigated *** was shown that the theoretical nonlinear analytical solution curve as the benchmark not only with the capacity to predict the nonlinear load-deflection relation within the elastic deformation regime,but also assists to capture the yielding event roughly,which can be used as a powerful design tool for *** capture the beginning of the yielding event exactly,bending proof strength(σ_(p),0.05%)accompanied with tiny permanent strain of 0.05% was proposed and determined for BMGs in biomedical implant applications,which is of significance for setting the allowable operating limits of the basic flexible *** approach of interrupted loading-unloading cycles,plastic deformation driven by the bending moment can be classified into two typical stages:the initial stage which mainly characterized by the nucleation and intense interaction of abundant shear bands when the plastic strain below the critical value,and the second stage which dominated by the progressive propagation of shear bands and coupled with the emergence of shear offsets on tensile *** plasticity of BMG beam structures depends on the BMG's inherent plastic zone size(rp).When the half beam thickness less than that of the rp,the plastic deformation of BMGs will behave in a stable manner,which can be acted as the margin of safety effectiv

关键词： Metallic glasses Biomaterials Compliant spinal fixation Large deflection deformation Plastic deformation

Role of shear wave elastography in the evaluation of the treatment and prognosis of supraspinatus tendinitis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2020年第14期8卷 2977-2987页

作者： Jie Zhou De-Bin Yang Jing Wang hui-zhang li Ying-Chun Wang Department of Ultrasonic Imaging Jiading District Central Hospital Affiliated Shanghai University of Medicine and Health SciencesShanghai 201800China Department of Orthopaedics Jiading District Central Hospital Affiliated Shanghai University of Medicine and Health SciencesShanghai 201800China

BACKGROUND Supraspinatus tendinitis recurs easily after *** of the main reasons is the lack of objective tools for the efficacy *** wave elastography(SWE)can quantitatively analyze the tissue elasticity of region of interest by measuring the Young’s modulus(YM)*** To explore the role of SWE in the efficacy and prognostic evaluation of supraspinatus *** Eighty-seven patients with supraspinatus tendinitis treated in Jiading District Central Hospital Affiliated Shanghai University of Medicine and Health Sciences were *** 30 healthy volunteers were enrolled as the control *** visual analogue scale(VAS)and Constant-Murley Score(CMS)were recorded before *** participants were scanned by SWE scan,and the YM value of the region of interest were *** correlation analysis was performed on YM values with VAS and *** repeated measures analysis of variance was used to calculate the changing trend of VAS,CMS and SWE under different treatment *** treatment,the patients were further grouped based on who achieved significantly effective and curative *** patients in the continued treatment group continued to receive treatment according to the YM value,and the remaining patients who stopped receiving treatment were included in the stopped treatment *** patients were followed up for 1 year,and the difference in recurrence rates between the continued treatment group and the stopped treatment group were *** The SWE images of supraspinatus muscle in healthy volunteers were mainly blue,while those of patients with supraspinatus tendinitis showed regional red and green *** average YM value of the supraspinatus muscle in healthy volunteers was 26.12±4.03 *** average YM value of patients with supraspinatus muscle was greater than that of healthy volunteers(average YM=60.61±11.53 kPa,t=26.344,P<0.001).The YM value was positively correlated with VAS(r

关键词： Supraspinatus tendinitis Shear wave elastography Young’s modulus value Visual analog score Constant-Murley score Recurrence

Spatial Distribution Feature Extraction Network for Open Set Recognition of Electromagnetic Signal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第4期139卷 279-296页

作者： hui zhang Huaji Zhou li Wang Feng Zhou The Ministry Key Laboratory of Electronic Information Countermeasure and Simulation Xidian UniversityXi’an710071China Science and Technology on Communication Information Security Control Laboratory Jiaxing314033China

This paper proposes a novel open set recognition method,the Spatial Distribution Feature Extraction Network(SDFEN),to address the problem of electromagnetic signal recognition in an open *** spatial distribution feature extraction layer in SDFEN replaces convolutional output neural networks with the spatial distribution features that focus more on inter-sample information by incorporating class center *** designed hybrid loss function considers both intra-class distance and inter-class distance,thereby enhancing the similarity among samples of the same class and increasing the dissimilarity between samples of different classes during ***,this method allows unknown classes to occupy a larger space in the feature *** reduces the possibility of overlap with known class samples and makes the boundaries between known and unknown samples more ***,the feature comparator threshold can be used to reject unknown *** signal open set recognition,seven methods,including the proposed method,are applied to two kinds of electromagnetic signal data:modulation signal and real-world *** experimental results demonstrate that the proposed method outperforms the other six methods overall in a simulated open ***,compared to the state-of-the-art Openmax method,the novel method achieves up to 8.87%and 5.25%higher micro-F-measures,respectively.

关键词： Electromagnetic signal recognition deep learning feature extraction open set recognition