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Simultaneous thermal and contraction/expansion curves analysis for solidification control of cast irons

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China Foundry 2020年第2期17卷 96-110页

作者： Iulian Riposan Stelian Stan Mihai Chisamera Loredana Neacsu Ana Maria Cojocaru eduard Stefan Iuliana Stan Politehnica University of Bucharest 313Independentei Spl.6th District060042 BucharestRomania

The first part of the paper summarizes the performance of two mould devices,illustrating by representative shrinkage tendency results in ductile cast iron as affected by mould rigidity(green and furan resin sand moulds)and inoculant type(FeSi-based alloys).Less rigid green sand moulds encourage the formation of contraction defects,not only because of the high initial expansion values(ε(di))(max),but also because of the increased solidification undercooling.A high inoculation efficiency means not only lowering the carbides formation sensitivity and increasing the nodule count,but also a prolonged graphitization through to the end of the eutectic freezing,as observed by the high population of small late forming nodules,which leads to minimizing the tendency for *** second part of the paper illustrates an application of this equipment to commercial foundry *** conducts thermal analysis and volume change measurements in a single ceramic cup with cast iron quality as a ***-bearing FeSi inoculant appears to be more effective than RE(Rare Earth)-FeSi alloy in FeSiMgCa treated irons(no RE),in terms of reducing eutectic undercooling and(ε(di))(max),favourable for lower sensitivity to shrinkage *** also compared solidification patterns for white[WI],grey[GI]and ductile[DI]irons,to correlate the most important events between the cooling curves and contraction curves,to evaluate the sensitivity to shrinkage *** of the irons have similar values for initial expansion up to the start of eutectic freezing,but,after that,the graphite formation promotes expansion(more than 5 times for nodular graphite),resulting in a difference in maximum expansion(2 times higher for DI).The graphitic expansion has two contrary *** graphitic expansion(force)leads to a higher shrinkage sensitivity during the first part of the eutectic reaction,but also to a decrease of shrinkage at the end of solidification,due to forcing the last liquid i

关键词： white,grey and ductile castiron solidification undercooling structure simultaneous thermal and contraction analysis graphite graphitic

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预训练语言模型及其应用（英文）

Engineering 2023年第6期 51-65页

作者：王海峰李纪为 Hua Wu eduard Hovy Yu Sun Baidu Inc. College of Computer Science and Technology Zhejiang University Language Technologies Institute Carnegie Mellon University

预训练语言模型（pre-trained languages model, PTLM）在自然语言处理（natural language processing,NLP）领域取得了令人瞩目的成功，并由此引发了下游任务从监督学习到预训练-微调范式的转变。在此之后，一系列预训练模型的创新研...

预训练语言模型（pre-trained languages model, PTLM）在自然语言处理（natural language processing,NLP）领域取得了令人瞩目的成功，并由此引发了下游任务从监督学习到预训练-微调范式的转变。在此之后，一系列预训练模型的创新研究涌现出来。本文系统性、全面的回顾了自然语言处理的代表性工作和最新进展，并按照类别系统性的介绍了自然语言处理领域的预训练模型。首先我们简要介绍了预训练模型，以及不同的模型特点和框架。之后，我们介绍并分析了预训练模型的影响和挑战以及下游任务中的应用。最后，我们简要总结并阐述了预训练模型未来的研究方向。

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All-optical generation of static electric field in a single metal-semiconductor nanoantenna

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Light(Science & Applications) 2023年第11期12卷 2350-2362页

作者： Yali Sun Artem Larin Alexey Mozharov eduard Ageev Olesia Pashina Filipp Komissarenko Ivan Mukhin Mihail Petrov Sergey Makarov Pavel Belov Dmitry Zuev School of Physics and Engineering ITMO UniversityLomonosova 9Saint Petersburg 191002Russia Center for Nanotechnologies Alferov UniversityKhlopina 8/3Saint Petersburg 194021Russia Higher School of Engineering Physics Peter the Great Saint Petersburg Polytechnic UniversityPolitekhnicheskaya 29Saint Petersburg 195251Russia

Electric field is a powerful instrument in nanoscale engineering,providing wide functionalities for control in various optical and solid-state *** development of a single optically resonant nanostructure operating with a charge-induced electrical field is challenging,but it could be extremely useful for novel nanophotonic ***,we show a resonant metal-semiconductor nanostructure with a static electric field created at the interface between its components by charge carriers generated via femtosecond laser *** study this field experimentally,probing it by second-harmonic generation signal,which,in our system,is time-dependent and has a non-quadratic signal/excitation power *** developed numerical models reveal the influence of the optically induced static electric field on the second harmonic generation *** also show how metal work function and silicon surface defect density for different charge carrier concentrations affect the formation of this *** estimate the value of optically-generated static electric field in this nanoantenna to achieve≈10^(8)V/*** findings pave the way for the creation of nanoantenna-based optical memory,programmable logic and neuromorphic devices.

关键词： antenna optical field

Seismic Theory of Tides; Theory of Forced Seismic Waves

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Sino-US English Teaching 2017年第3期14卷 193-203页

作者： Heyfetz eduard State University of Odessa named after I. I. Mechnikov Yaffo Israel

Current strategies to diagnose and manage positive surgical margins and local recurrence after partial nephrectomy

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Asian Journal of Urology 2022年第3期9卷 227-242页

作者： Umberto Carbonara Daniele Amparore Cosimo Gentile Riccardo Bertolo Selcuk Erdem Alexandre Ingels Michele Marchioni Constantijn H.J.Muselaers Onder Kara Laura Marandino Nicola Pavan eduard Roussel Angela Pecoraro Fabio Crocerossa Giuseppe Torre Riccardo Campi Pasquale Ditonno European Association of Urology(EAU) Young Academic Urologists(YAU)Renal Cancer Working Group Department of Emergency and Organ Transplantation-Urology Andrology and Kidney Transplantation UnitUniversity of BariBariItaly Division of Urology Department of OncologySchool of MedicineSan Luigi HospitalUniversity of TurinOrbassanoTurinItaly Department of Urology San Carlo Di Nancy HospitalRomeItaly Division of Urologic Oncology Department of UrologyIstanbul University Istanbul Faculty of MedicineIstanbulTurkey Department of Urology University Hospital Henri MondorAPHPCreteilFrance Department of Urology SS Annunziata Hospital"G.D’Annunzio"University of ChietiChietiItaly Department of Urology Radboud University Medical CenterNijmegenthe Netherlands Department of Urology Kocaeli University School of MedicineKocaeliTurkey Department of Medical Oncology IRCCS Ospedale San RaffaeleVita-Salute San Raffaele UniversityMilanItaly Urology Clinic Department of MedicalSurgical and Health ScienceUniversity of TriesteTriesteItaly Department of Urology University Hospitals LeuvenLeuvenBelgium Department of Urology Magna Graecia University of CatanzaroCatanzaroItaly Unit of Urological Robotic Surgery and Renal Transplantation University of FlorenceCareggi HospitalFlorenceItaly

Objective:No standard strategy for diagnosis and management of positive surgical margin(PSM)and local recurrence after partial nephrectomy(PN)are reported in *** review aims to provide an overview of the current strategies and further perspectives on this patient ***:A non-systematic review of the literature was *** research included the most updated articles(about the last 10 years).Results:Techniques for diagnosing PSMs during PN include intraoperative frozen section,imprinting cytology,and other specific *** clear evidence is reported about these *** PSM management,active surveillance with a combination of imaging and laboratory evaluation is the first option line followed by *** local recurrence management,surgery is the primary curative approach when possible but it may be technically difficult due to anatomy resultant from previous *** this scenario,thermal ablation(TA)may have the potential to circumvent these limitations representing a less invasive *** surgery represents a valid option;six studies analyzed the outcomes of nephrectomy on local recurrence after PN with three of these focused on robotic ***all,complication rates of salvage surgery are higher compared to TA but ablation presents a higher recurrence rate up to 25%of cases that can often be managed with repeat ***:Controversy still exists surrounding the best strategy for management and diagnosis of patients with PSMs or local recurrence after *** surveillance is likely to be the optimal first-line management option for most patients with *** and salvage surgery both represent valid options in patients with local recurrence after ***,salvage PN and radical nephrectomy have fewer recurrences but are associated with a higher complication rate compared to *** this scenario,robotic surgery plays an important role in improving salvage PN and radical nephrectom

关键词： Positive surgical margin Local recurrence Partial nephrectomy Radical nephrectomy Robot-assisted partial nephrectomy

Novel CABIN score outperforms other prognostic models in predicting in-hospital mortality after salvage transjugular intrahepatic portosystemic shunting

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World Journal of Gastrointestinal Pathophysiology 2023年第2期14卷 34-45页

作者： Jake Krige eduard Jonas Chanel Robinson Steve Beningfield Urda Kotze Marc Bernon Sean Burmeister Christo Kloppers Department of Surgical Gastroenterology University of Cape Town Health Sciences FacultyCape Town 7925Western CapeSouth Africa Department of Radiology University of Cape Town Health Sciences FacultyCape Town 7925Western CapeSouth Africa Department of Surgical Gastroenterology University of Cape TownFaculty of Health SciencesCape Town 7925Western CapeSouth Africa

BACKGROUND Transjugular intrahepatic portosystemic shunt(TIPS)is now established as the salvage procedure of choice in patients who have uncontrolled or severe recurrent variceal bleeding despite optimal medical and endoscopic *** To analysis compared the performance of eight risk scores to predict in-hospital mortality after salvage TIPS(sTIPS)placement in patients with uncontrolled variceal bleeding after failed medical treatment and endoscopic *** Baseline risk scores for the Acute Physiology and Chronic Health Evaluation(APACHE)II,Bonn TIPS early mortality(BOTEM),Child-Pugh,Emory,FIPS,model for end-stage liver disease(MELD),MELD-Na,and a novel 5 category CABIN score incorporating Creatinine,Albumin,Bilirubin,INR and Na,were calculated before ***(C)statistics for predictive accuracy of inhospital mortality of the eight scores were compared using area under the receiver operating characteristic curve(AUROC)*** Thirty-four patients(29 men,5 women),median age 52 years(range 31-80)received sTIPS for uncontrolled(11)or refractory(23)bleeding between August 1991 and November *** TIPS controlled bleeding in 32(94%)patients with recurrence in ***(29%)patients died in *** scoring systems had a significant association with in-hospital mortality(P*** was 100%in CABIN A patients while mortality was 75%for CABIN B,87.5%for CABIN C,and 83%for CABIN scores>10.

关键词： Transjugular intrahepatic portosystemic shunt Risk score Portal hypertension Variceal bleeding Mortality

EUV-dependence of Venusian dayside ionopause altitude:VEX and PVO observations

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Earth and Planetary Physics 2020年第1期4卷 73-81页

作者： QianQian Han Markus Fraenz Yong Wei eduard Dubinin Jun Cui LiHui Chai ZhaoJin Rong WeiXing Wan Yoshifumi Futaana Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Beijing National Observatory of Space Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100049China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Max-Planck-Institute for Solar System Research GoettingenDE 37077Germany Institutions of Earth Science Chinese Academy of SciencesBeijing 100029China School of Atmospheric Sciences Sun Yat-Sen UniversityZhuhai Guangdong 519082China Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100012China Swedish Institute of Space Physics KirunaSE 98128Sweden

The Venusian dayside ionosphere, similar to other planetary ionospheres, is produced primarily by ionization of its neutral upper atmosphere due to solar extreme ultraviolet (EUV) radiation. It has become clear that the expansion of the ionosphere may be strongly controlled by the EUV level, as exhibited in data collected by the Pioneer Venus Orbiter (PVO) during one solar cycle (1978 1992). However, the EUV-dependence of the Venusian dayside ionopause altitude, which defines the outer boundary of the ionosphere, remains obscure because the PVO crossed the dayside ionopause only during the solar maximum;its periapsis lifted too high during the solar minimum. Recently, during the period 2006 2014, which included the longest and quietest solar minimum of the past several decades, Venus Express (VEX) provided measurements of the photoelectron boundary (PEB) over the northern high-latitude region. Since the photoelectron boundary is closely related to the ionopause, we have an opportunity to analyze the EUV effect on the dayside ionopause by combining PVO and VEX observations. We have evaluated and then reduced the orbit bias effect in data from both PVO and VEX, and then used the results to derive a relationship between solar EUV level and the dayside ionopause altitude. We find that the dayside ionopause altitude increases as the solar EUV level increases, which is consistent with theoretical expectations.

关键词： Venus ionopause ionosphere solar activity

Complications of Monochorionic Diamniotic Twins: Stepwise Approach for Early Identification, Differential Diagnosis, and Clinical Management

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Maternal-Fetal Medicine 2021年第1期3卷 42-52页

作者： Taita Micheletti Elisenda Eixarch Mar Bennasar Josep Maria Martinez eduard Gratacos BCNatal-Fetal Medicine Research Center(Hospital Clinic and Hospital Sant Joan de Deu) University of BarcelonaBarcelona 08028Spain Institut d'Investigacions Biomediques August Pi iSunyer(IDIBAPS) Barcelona 08036Spain Centre for Biomedical Research on Rare Diseases(CIBER-ER)Madrid 28029 Spain Institut de Recerca Sant Joan de Deu Esplugues de Llobregat 08950Spain

One in three monochorionic twins may develop complications during pregnancy. Monochorionic twins, especially monochorionic diamniotic (MCDA), present specific problems caused by the presence of interfetal placental anastomoses. The first critical step in the management of MCDA twins is identification in the first trimester. Secondly, close follow-up every 2 weeks is mandatory to allow early diagnosis and timely treatment of twin-twin transfusion syndrome. Other potentially severe complications include selective fetal growth restriction, twin anemia polycythemia syndrome or single fetal death. Thirdly, a correct differential diagnosis is critical to establish the best therapy. This may represent a clinical challenge since MCDA twin complications often overlap. A simple diagnostic algorithm may be of great help to establish the right diagnosis and management option. In this review we summarize the main steps for the clinical follow-up, differential diagnosis, and targeted management of MCDA twins complications.

关键词： Acute feto-fetal transfusion Discordant malformation Monochorionic diamniotic twin pregnancy Pregnancy twin Selective fetal growth restriction Single intrauterine fetal death Twin anemia-polycythemia sequence Twin-twin transfusion syndrome

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一帘幽梦莫斯科Sfera美容共享空间

室内设计与装修 2022年第10期 96-100页

作者： [俄罗斯]eduard Eremchuk 夕阳(编译) 不详

Sfera美容共享空间位于莫斯科,是一个面向化妆师、美发师及美甲师的模块化空间,并且是按小时计算租金。因此,业主希望设计师能在有限的空间内,创建一个高度灵活的工作场所,以适应各种需求。空间的总面积为140m~2,共设有7个化妆位、6个... 详细信息

Sfera美容共享空间位于莫斯科,是一个面向化妆师、美发师及美甲师的模块化空间,并且是按小时计算租金。因此,业主希望设计师能在有限的空间内,创建一个高度灵活的工作场所,以适应各种需求。空间的总面积为140m~2,共设有7个化妆位、6个美发位、4个美甲位及接待台和小型演讲厅。设计师引入一系列装有脚轮的模块化家具,可自由组合,使空间具有更多的可能性,如举办研讨会、讲座和公开演讲等活动。

关键词：自由组合共享空间美甲一帘幽梦美容美发师演讲厅家具