检索结果-南通市图书馆

Journal of Semiconductors 2024年第6期45卷 35-46页

作者： Yukun He Zhao Yuan Kanan Wang Renjie Tang Yunxiang He Xian Chen Zhengyang Ye Xiaoyan gui School of Microelectronics Xi’an Jiaotong UniversityXi’an 710049China

A 28/56 Gb/s NRZ/PAM-4 dual-mode transceiver(TRx)designed in a 28-nm complementary metal-oxide-semiconduc-tor(CMOS)process is presented in this article.A voltage-mode(VM)driver featuring a 4-tap reconfigurable feed-forward equal-izer(FFE)is employed in the quarter-rate transmitter(TX).The half-rate receiver(RX)incorporates a continuous-time linear equal-izer(CTLE),a 3-stage high-speed slicer with multi-clock-phase sampling,and a clock and data recovery(CDR).The experimen-tal results show that the TRx operates at a maximum speed of 56 Gb/s with chip-on board(COB)*** 28 Gb/s NRZ eye diagram shows a far-end vertical eye opening of 210 mV with an output amplitude of 351 mV single-ended and the 56 Gb/s PAM-4 eye diagram exhibits far-end eye opening of 33 mV(upper-eye),31 mV(mid-eye),and 28 mV(lower-eye)with an output amplitude of 353 mV *** recovered 14 GHz clock from the RX exhibits random jitter(RJ)of 469 fs and deterministic jitter(DJ)of 8.76 *** 875 Mb/s de-multiplexed data features 593 ps horizontal eye opening with 32.02 ps RJ,at bit-error rate(BER)of 10-5(0.53 UI).The power dissipation of TX and RX are 125 and 181.4 mW,respectively,from a 0.9-V sup-ply.

关键词： transceiver(TRx) feed-forward equalizer(FFE) clock and data recovery(CDR) continuous time linear equalizer(CTLE)

CRB:A new rumor blocking algorithm in online social networks based on competitive spreading model and influence maximization

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第8期33卷 588-604页

作者：董晨徐桂琼孟蕾 School of Management Shanghai UniversityShanghai 200444China

The virtuality and openness of online social platforms make networks a hotbed for the rapid propagation of various *** order to block the outbreak of rumor,one of the most effective containment measures is spreading positive information to counterbalance the diffusion of *** spreading mechanism of rumors and effective suppression strategies are significant and challenging research ***,in order to simulate the dissemination of multiple types of information,we propose a competitive linear threshold model with state transition(CLTST)to describe the spreading process of rumor and anti-rumor in the same ***,we put forward a community-based rumor blocking(CRB)algorithm based on influence maximization theory in social *** crucial step is to identify a set of influential seeds that propagate anti-rumor information to other nodes,which includes community detection,selection of candidate anti-rumor seeds and generation of anti-rumor seed *** the CLTST model,the CRB algorithm has been compared with six state-of-the-art algorithms on nine online social networks to verify the *** results show that the proposed model can better reflect the process of rumor propagation,and review the propagation mechanism of rumor and anti-rumor in online social ***,the proposed CRB algorithm has better performance in weakening the rumor dissemination ability,which can select anti-rumor seeds in networks more accurately and achieve better performance in influence spread,sensitivity analysis,seeds distribution and running time.

关键词： online social networks rumor blocking competitive linear threshold model influence maximization

在线全文

学校读者我要写书评

暂无评论

高速公路出入口回转车道设计

洛阳理工学院学报（自然科学版） 2015年第3期25卷 26-28页

作者：董桂贝吴昊长安大学公路学院陕西西安710064

在出入口处增设回转车道,可提高出入口交通安全系数,给驶过出入口的驾驶员更好的解决方案。详述了在高速公路出入口处所设回转车道的设计原理和具体的结构设计方案。通过分析高速公路出口间距,得出回转车道的选位方案,参照高速公路匝道... 详细信息

在出入口处增设回转车道,可提高出入口交通安全系数,给驶过出入口的驾驶员更好的解决方案。详述了在高速公路出入口处所设回转车道的设计原理和具体的结构设计方案。通过分析高速公路出口间距,得出回转车道的选位方案,参照高速公路匝道设计方案来标定回转车道设计参数,最后给出了整个回转车道具体的结构设计。

关键词：交通工程回转车道结构设计高速公路出入口设施设计高速公路交通安全

Application of CFD and FEA Coupling to Predict Structural Dynamic Responses of A Trimaran in Uni-and Bi-Directional Waves

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2024年第1期38卷 81-92页

作者： LIAO Xi-yu XIA Jin-song CHEN Zhan-yang TANG Qin ZHAO Nan ZHAO Wei-dong gui Hong-bin Marine Design&Research Institute of China Shanghai 200011China Ship Structure Division China Ship Scientific Research CenterWuxi 214082China College of Ocean Engineering Harbin Institute of TechnologyWeihaiWeihai 264209China State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentDalian University of TechnologyDalian 116024China School of Foreign Studies Jiangnan UniversityWuxi 214122China

To predict the wave loads of a flexible trimaran in different wave fields,a one-way interaction numerical simulation method is proposed by integrating the fluid solver(Star-CCM+)and structural solver(Abaqus).Differing from the existing coupled CFD-FEA method for monohull ships in head waves,the presented method equates the mass and stiffness of the whole ship to the hull shell so that any transverse and longitudinal section stress of the hull in oblique waves can be ***,verification study and sensitivity analysis are carried out by comparing the trimaran motions using different mesh sizes and time step *** on the wave elevation of uni-and bi-directional waves is also carried *** a comprehensive analysis on the structural responses of the trimaran in different uni-directional regular wave and bi-directional cross sea conditions is carried out,***,the differences in structural response characteristics of trimaran in different wave fields are *** results show that the present method can reduce the computational burden of the two-way fluid-structure interaction simulations.

关键词： CFD-FEA fluid-structure coupling structural responses trimaran bi-directional cross sea

Securing offshore resources development: A mathematical investigation into gas leakage in long-distance flexible pipes

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2024年第4期21卷 2734-2744页

作者： Xiang-An Lu Liang-Liang Jiang Jian-Sheng Zhang Min-gui Wang Guangling College of Yangzhou University Department of Chemical and Petroleum Engineering University of Calgary Department of Energy and Power Engineering Tsinghua University

Gas flexible pipes are critical multi-layered equipment for offshore oil and gas development. Under high pressure conditions, small molecular components of natural gas dissolve into the polymer inner liner of the flexible pipes and further diffuse into the annular space, incurring annular pressure build-up and/or production of acidic environment, which poses serious challenges to the structure and integrity of the flexible pipes. Gas permeation in pipes is a complex phenomenon governed by various factors such as internal pressure and temperature, annular structure, external temperature. In a long-distance gas flexible pipe, moreover, gas permeation exhibits non-uniform features, and the gas permeated into the annular space flows along the metal gap. To assess the complex gas transport behavior in long-distance gas flexible pipes, a mathematical model is established in this paper considering the multiphase flow phenomena inside the flexible pipes, the diffusion of gas in the inner liner, and the gas seepage in the annular space under varying permeable properties of the annulus. In addition, the effect of a variable temperature is accounted. A numerical calculation method is accordingly constructed to solve the coupling mathematical equations. The annular permeability was shown to significantly influence the distribution of annular pressure. As permeability increases, the annular pressure tends to become more uniform, and the annular pressure at the wellhead rises more rapidly. After annular pressure relief followed by shut-in, the pressure increase follows a convex function. By simulating the pressure recovery pattern after pressure relief and comparing it with test results, we deduce that the annular permeability lies between 123 and 512 m D. The results help shed light upon assessing the annular pressure in long distance gas flexible pipes and thus ensure the security of gas transport in the emerging development of offshore resources.

关键词： Offshore resources development Transport security Long-distance flexible pipes Gas leakage Heat and mass transfer model Finite difference calculation

Impact of different anastomosis methods on post-recurrence after intestinal resection for Crohn's disease:A meta-analysis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第4期16卷 1165-1175页

作者： Zheng-Zuo Wang Chun-Hua Zhao Hui Shen gui-Ping Dai Department of Anorectal Jiashan Hospital of Traditional Chinese MedicineJiaxing 314100Zhejiang ProvinceChina Department of Oncology Jiashan Hospital of Traditional Chinese MedicineJiaxing 314100Zhejiang ProvinceChina Department of Gastroenterology Jiashan Hospital of Traditional Chinese MedicineJiaxing 314100Zhejiang ProvinceChina Department of Oncology The Second Hospital of JiaxingJiaxing 314000Zhejiang ProvinceChina

BACKGROUND Crohn's disease(CD)is a chronic inflammatory disease of the gastrointestinal tract,often requiring intestinal resection as a common ***,recurrence after surgery is *** anastomotic configuration after bowel resection appears to be associated with the recurrence of *** studies have suggested that the Kono-S anastomosis may help to reduce the recurrence ***,the results remain ***,evidence-based evidence is needed to prove the advantages of Kono-S *** To measure the influence of anastomosis techniques on the long-term relapse rate of CD by conducting a *** PubMed,Scopus,and Cochrane Library were searched until October 8,*** who underwent intestinal resection due to CD were *** intervention measures included Kono-S anastomosis,whereas the control group received traditional anastomosis such as end-to-end,end-to-side,and side-to-side *** randomized clinical trials and observational studies were *** primary outcome measures were hospital stay post-surgery,overall postoperative complication incidence,the proportion of Clavien-Dindo grade IIIa or higher,overall postoperative recurrence rate,and Rutgeerts *** From 2011 to 2023,six articles met the inclusion and exclusion *** results indicated that Kono-S anastomosis can reduce the hospital stay post-surgery of patients with CD[MD=-0.26,95%CI:-0.42 to-0.10,P=0.002]than other traditional anastomosis *** to other traditional anastomosis methods,Kono-S anastomosis can significantly reduce the total recurrence rate[MD=0.40,95%CI:0.17 to 0.98,P=0.05]and postoperative Rutgeerts score[MD=-0.81,95%CI:-0.96 to-0.66,P<0.001]in patients with ***,there is no significant disparity in the overall occurrence of postoperative complications and the proportion of Clavien-Dindo≥*** Kono-S anastomosis has the potential to expedite the recuperation of CD and di

关键词： Kono-S Crohn’s disease Traditional anastomosis Postoperative recurrence Meta-analysis

Pathological mechanism of immune disorders in diabetic kidney disease and intervention strategies

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 Diabetes 2024年第6期15卷 1111-1121页

作者： Tong Zhou Yi-Lin Fang Tian-Tian Tian gui-Xia Wang Department of Endocrinology and Metabolism The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina National-Local Joint Engineering Laboratory of Animal Models for Human Diseases Jilin UniversityChangchun 130021Jilin ProvinceChina School of Public Health Jilin UniversityChangchun 130021Jilin ProvinceChina

Diabetic kidney disease is one of the most severe chronic microvascular complications of diabetes and a primary cause of end-stage renal *** studies have shown that renal inflammation is a key factor determining kidney damage during *** the development of immunological technology,many studies have shown that diabetic nephropathy is an immune complex disease,and that most patients have immune ***,the immune response associated with diabetic nephropathy and autoimmune kidney disease,or caused by ischemia or infection with acute renal injury,is different,and has a complicated pathological *** this review,we discuss the pathogenesis of diabetic nephropathy in immune disorders and the intervention mechanism,to provide guidance and advice for early intervention and treatment of diabetic nephropathy.

关键词： Diabetic kidney disease Immune disorders Pathological mechanism Intervention strategy Kidney damage Diabetic nephropathy Inflammasome Immunoglobulin

A Stroke-Limitation AMD Control System with Variable Gain and Limited Area for High-Rise Buildings

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

工程与科学中的计算机建模(英文) 2024年第1期138卷 865-884页

作者： Zuo-Hua Li Qing-gui Wu Jun Teng Chao-Jun Chen School of Civil and Environmental Engineering Harbin Institute of Technology(Shenzhen)Shenzhen518055China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong100872China

Collisions between a moving mass and an anti-collision device increase structural responses and threaten structural *** active mass damper(AMD)with stroke limitations is often used to avoid ***,a strokelimited AMD control system with a fixed limited area shortens the available AMD stroke and leads to significant control *** solve this problem,the design approach with variable gain and limited area(VGLA)is proposed in this ***,the boundary of variable-limited areas is calculated based on the real-time status of the moving *** variable gain(VG)expression at the variable limited area is deduced by considering the saturation of AMD ***,numerical simulations of a stroke-limited AMD control system with VGLA are conducted on a high-rise building *** numerical simulations show that the proposed approach has superior strokelimitation performance compared with a stroke-limited AMD control system with a fixed limited ***,the proposed approach is validated through experiments on a four-story steel frame.

关键词： High-rise buildings active control stroke limitations variable gain variable limited area

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

子宫输卵管造影不良反应及防治措施

中国医科大学学报 2015年第6期44卷 545-548页

作者：李玉泽卑贵光姜洪曹乐徐冉中国人民解放军第二0二医院放射线科沈阳110812

目的分析子宫输卵管造影检查过程中出现的不良反应及制定相应防治措施。方法收集2006年1月至2013年12月于我院行子宫输卵管造影检查的6 352例患者进行分析。结果 836例出现不同程度的不良反应。其中312例出现药物性不良反应,626例出现... 详细信息

目的分析子宫输卵管造影检查过程中出现的不良反应及制定相应防治措施。方法收集2006年1月至2013年12月于我院行子宫输卵管造影检查的6 352例患者进行分析。结果 836例出现不同程度的不良反应。其中312例出现药物性不良反应,626例出现非药物性不良反应。患者发生药物性不良反应时,主要症状为下腹部胀痛、咽喉部不适、呛咳、恶心、呕吐、气短及面部潮红、皮肤瘙痒等症状;非药物性不良反应626例,主要表现为下腹部胀痛、恶心、呕吐、面色苍白、心跳加快、血压下降、头晕、眼花等症状。结论碘过敏试验阴性的患者中,仍有少部分在造影过程中出现不同程度的不良反应,检查过程中应针对不同情况,采取相应的防治措施,以保证子宫输卵管造影检查的顺利进行。

关键词：子宫输卵管造影术碘化油不良反应防治措施

Decreased AKAP4/PKA signaling pathway in high DFI sperm affects sperm capacitation

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2024年第1期26卷 25-33页

作者： Kun Zhang Xiu-Hua Xu Jian Wu Ning Wang Gang Li gui-Min Hao Jin-Feng Cao Hebei Key Laboratory of Infertility and Genetics Department of Reproductive MedicineSecond Hospital of Hebei Medical UniversityShijiazhuang 050000China Department of Reproductive Medicine Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221000China Department of Neurology The 980th Hospital of the People's Liberation Army Joint Logistics Support Force(Bethune International Peace Hospital)Shijiazhuang 050000China.

The sperm DNA fragmentation index(DFI)is a metric used to assess DNA fragmentation within *** in vitro fertilizationembryo transfer(IVF-ET),high sperm DFI can lead to a low fertilization rate,poor embryo development,early miscarriage,etc.A kinase anchoring protein(AKAP)is a scaffold protein that can bind protein kinase A(PKA)to subcellular sites of specific substrates and protects the biophosphorylation *** protein antigen 17(SPA17)can also bind to *** study intends to explore the reason for the decreased fertilization rate observed in high sperm DFI(H-DFI)patients during *** addition,the study investigates the expression of AKAP,protein kinase A regulatory subunit(PKARIl),and SPA17 between H-DFI and low sperm DFI(L-DFI)***17 at the transcriptional level is abnormal,the translational level increases in H-DFI patients,and the expression of AKAP4/PKARIl protein decreases.H,O,has been used to simulate oxidative stress damage to spermatozoa during the formation of sperm *** indicates that H,O,increases the expression of sperm SPA17 protein and suppresses AKAP4/PKARIl protein *** processes inhibit sperm capacitation and reduce acrosomal *** culture data and IVF outcomes have been *** H-DFI group has a lower fertilization ***,the results indicate that the possible causes for the decreased fertilization rate in the H-DFI patients have included loss of sperm AKAP4/PKARIl proteins,blocked sperm capacitation,and reduced occurrence of acrosome reaction.

关键词： AKAP PKA SPA17 sperm capacitation sperm DNA fragmentation index