检索结果-南通市图书馆

A semiclassical perspective on nuclear chirality

在线全文

学校读者我要写书评

暂无评论

Frontiers of physics 2024年第2期19卷 39-52页

作者： radu Budaca “Horia Hulubei”National Institute for R&D in Physics and Nuclear Engineering Str.Reactorului 30RO-077125POB-MG6 Bucharest-MǎgureleRomania Academy of Romanian Scientists Splaiul Independenţei 54050044BucharestRomania

The application of the semiclassical description to a particle-core system with imbued chiral symmetry is *** classical features of the chiral geometry in atomic nuclei and the associated dynamics are investigated for various core deformations and single-particle *** dynamical characteristics are identified in specific angular momentum ranges,triaxiality and alignment *** observables will be extracted from the classical picture for a quantitative description of experimental data provided as numerical examples of the model’s performance.

关键词： chiral symmetry triaxial nuclei semiclassical description

Contrast-enhanced guided endoscopic ultrasound procedures

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 Gastroenterology 2024年第17期30卷 2311-2320页

作者： Marcel Ioan Gheorghiu Andrada Seicean Cristina Pojoga Claudia Hagiu radu Seicean Zeno Sparchez Department of Gastroenterology “Prof.Dr.Octavian Fodor”Regional Institute of Gastroenterology and Hepatology"Iuliu Hatieganu"University of Medicine and PharmacyCluj-Napoca 400162ClujRomania Department of Clinical Psychology and Psychotherapy International Institute for Advanced Study of Psychotherapy and Applied Mental HealthBabeș-Bolyai UniversityCluj-Napoca 400375ClujRomania The First Surgical Clinic "Iuliu Hatieganu"University of Medicine and PharmacyCluj Napoca 400006ClujRomania

Contrast-enhanced endoscopic ultrasound(CH-EUS)can overcome the limi-tations of endoscopic ultrasound-guided acquisition by identifying microvessels inside inhomogeneous tumours and improving the characterization of these *** the initial enthusiasm that oriented needle sampling under CH-EUS guidance could provide better diagnostic yield in pancreatic solid lesions,further studies did not confirm the supplementary values in cases of tissue acquisition guided by *** review details the knowledge based on the available data on contrast-guided *** indications for CH-EUS tissue acquisition include isoechoic EUS lesions with poor visible delineation where CH-EUS can differentiate the lesion vascularisation from the surrounding parenchyma and also the mural nodules within biliopancreatic cystic lesions,which occur in select ***,the roles of CH-EUS-guided therapy in patients whose pancreatic fluid collections or bile ducts that have an echogenic content have indications for drainage,and patients who have nonvisualized vessels that need to be highlighted via Doppler EUS are *** indication is represented if there is a need for an immediate assessment of the post-radiofrequency ablation of pancreatic neuroendocrine tumours,in which case CH-EUS can be used to reveal the incomplete tumour destruction.

关键词： Endosonography Contrast-enhanced endoscopic ultrasound Tissue acquisition Fine needle aspiration Fine needle biopsy Drainage Pancreatic fluid collections Biopsy Pancreas

Exploring fs-laser irradiation damage subthreshold behavior of dielectric mirrors via electrical measurements

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2024年第2期12卷 24-32页

作者： Petrisor Gabriel Bleotu radu Udrea Alice Dumitru Olivier Uteza Maria-Diana Mihai Dan Gh Matei Daniel Ursescu Stefan Irimiciuc Valentin Craciun Extreme Light Infrastructure-Nuclear Physics(ELI-NP) Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering(IFIN-HH)MagureleRomania Doctoral School of Physics University of BucharestMagureleRomania LULI-CNRS CEAUniversite SorbonneEcole PolytechniqueInstitut Polytechnique de ParisPalaiseau CEDEXFrance Apel Laser IlfovRomania Aix-Marseille University CNRSLP3 UMR 7341MarseilleFrance Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering(IFIN-HH) MagureleRomania University Politehnica of Bucharest BucharestRomania National Institute for Lasers Plasma and Radiation Physics MagureleRomania

With ultrafast laser systems reaching presently 10 PW peak power or operating at high repetition rates,research towards ensuring the long-term,trouble-free performance of all laser-exposed optical components is *** work is focused on providing insight into the optical material behavior at fluences below the standardized laser-induced damage threshold(LIDT)value by implementing a simultaneous dual analysis of surface emitted particles using a Langmuir probe(LP)and the target current(TC).HfO_(2) and ZrO_(2) thin films deposited on fused silica substrates by pulsed laser deposition at various O_(2) pressures for defect and stoichiometry control were irradiated by Gaussian,ultrashort laser pulses(800 nm,10 Hz,70 fs)in a wide range of *** TC and LP collected signals were in good agreement with the existing theoretical description of laser–matter interaction at an ultrashort time *** approach for an in situ LIDT monitoring system provides measurable signals for below-threshold irradiation conditions that indicate the endurance limit of the optical surfaces in the single-shot energy scanning *** LIDT value extracted from the LP-TC system is in line with the multipulse statistical analysis done with ISO 21254-2:2011(E).The implementation of the LP and TC as on-shot diagnostic tools for optical components will have a significant impact on the reliability of next-generation ultrafast and high-power laser systems.

关键词： HfO_(2) in situ detection Langmuir probe laser-induced damage threshold target current ZrO_(2)

Mucinous appendiceal neoplasm:A case report

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7期9卷 1728-1733页

作者： Alexandru Chirca Lucian Negreanu andreea Iliesiu radu Costea Surgery II Department University HospitalCarol Davila UniversityBucharestBucharest 050098Romania Gastroenterology II Department University HospitalCarol Davila UniversityBucharestBucharest 050098Romania Pathology Department University HospitalCarol Davila UniversityBucharestBucharest 050098Romania

BACKGROUND Primary appendiceal tumors are histologically diverse and have an insidious onset and few specific clinical *** the majority of cases,these tumors are discovered after appendectomy during pathological exam of the resected *** may include appendectomy(simple or radical)and right hemicolectomy depending on factors such as histological type,tumor size and lymph node/organ *** aim of this case study is to describe a rare case of a giant appendicular mucocele and raise awareness of this condition and its management options and follow-up *** SUMMARY We present the case of a 43-year-old patient who presented to our emergency department with mild right lower quadrant *** the initial check-up and imaging exams,he underwent surgery,where a giant 20 cm×13 cm appendicular tumor was found and *** mucocele was suspected due to the macroscopic appearance and was later confirmed by the pathological *** patient’s postoperative evolution was uneventful,and after discharge,he was included in our follow-up *** In conclusion,mucinous appendiceal neoplasms embody a rare pathology;they are asymptomatic or have few,unspecific clinical signs and in many cases are discovered after appendectomy.

关键词： Appendiceal tumors Appendicular mucocele Mucinous appendiceal neoplasms Case report

20世纪60年代的罗马尼亚电影:社会主义现代性与电影现代主义

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

上海大学学报（社会科学版） 2024年第4期41卷 71-78页

作者：拉杜·托德里奇(文) 宋雨萌(译) 巴比什-博雅伊大学电影系罗马尼亚克卢日-纳波卡400084 剑桥大学电影与银幕研究系英国剑桥CB21TN

就20世纪60年代上映的罗马尼亚剧情电影而言,它们最重要的特征之一是强调休闲和适度消费,热衷于工业化和城市化,并反映出一个能给公民带来体面生活条件的社会主义社会。简言之,它们强调了社会主义现代性的多个方面。事实上,对于社会主... 详细信息

就20世纪60年代上映的罗马尼亚剧情电影而言,它们最重要的特征之一是强调休闲和适度消费,热衷于工业化和城市化,并反映出一个能给公民带来体面生活条件的社会主义社会。简言之,它们强调了社会主义现代性的多个方面。事实上,对于社会主义罗马尼亚而言,20世纪60年代是一个繁荣且对西方影响相对开放的时期,西方的现代电影就是此类影响之一。20世纪60年代的罗马尼亚现代电影自带价值冲突。西方电影反映出西方现代化项目中存在的普遍焦虑,而罗马尼亚现代电影在这种焦虑情绪的影响下呈现出模棱两可且自我批判的社会主义现代性。在某些情况下,这种社会主义现代性会受到罗马尼亚电影官员和国家政要的严厉制裁。

关键词：社会主义现代性现代主义电影现代主义西方影响社会主义现实主义

A fixed point theorem for Proinov mappings with a contractive iterate

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics(A Journal of Chinese Universities) 2023年第3期38卷 403-412页

作者： Erdal Karapnar andreea Fulga Department of Medical Research China Medical UniversityTaichungTaiwanChina Department of Mathematics Cankaya University06790EtimesgutAnkaraTurkey Department of Mathematics and Computer Science Transilvania University of BrasovBrasovRo-mania.

In this paper,we consider the fixed point theorem for Proinov mappings with a contractive iterate at a *** other words,we combine and unify the basic approaches of Proinov and Sehgal in the framework of the complete m... 详细信息

关键词： contractive iterate at a point Proinov mappings fixed point theorems

Evaluation of the seismic hazard for 20 cities in Romania using Monte Carlo based simulations

在线全文

学校读者我要写书评

暂无评论

Earthquake Engineering and Engineering Vibration 2017年第3期16卷 513-523页

作者： Florin Pavel radu Vacareanu Seismic Risk Assessment Research Center Technical University of Civil Engineering Bucharest Romania

This work focuses on the evaluation of the seismic hazard for Romania using earthquake catalogues generated by a Monte Carlo approach. The seismicity of Romania can be attributed to the Vrancea intermediate-depth seismic source and to 13 other crustal seismic sources. The recurrence times of large magnitude seismic events（both crustal and subcrustal）, as well as the moment release rates are computed using simulated earthquake catalogues. The results show that the largest contribution to the overall moment release for the crustal seismic sources is from the seismic regions in Bulgaria, while the seismic regions in Romania contribute less than 5% of the overall moment release. In addition, the computations show that the moment release rate for the Vrancea subcrustal seismic source is about ten times larger than that of all the crustal seismic sources. Finally, the Monte Carlo approach is used to evaluate the seismic hazard for 20 cities in Romania with populations larger than 100,000 inhabitants. The results show some differences between the seismic hazard values obtained through Monte-Carlo simulation and those in the Romanian seismic design code P100-1/2013, notably for cities situated in the western part of Romania that are influenced by local crustal seismic sources.

关键词： seismic sources uncertainty seismic moment GMPE percentile

Investigation on regional attenuation of Vrancea (Romania) intermediate-depth earthquakes

在线全文

学校读者我要写书评

暂无评论

Earthquake Engineering and Engineering Vibration 2018年第3期17卷 501-509页

作者： Florin Pavel radu Vacareanu Seismic Risk Assessment Research Center Technical University of Civil Engineering

This paper aims at investigating possible regional attenuation patterns in the case of Vrancea（Romania） intermediate-depth *** 500 pairs of horizontal components recorded during 13 intermediate-depth Vrancea earthquakes are employed in order to evaluate the regional attenuation *** recordings are grouped according to the azimuth with regard to the Vrancea seismic source and subsequently,Q models are computed for each azimuthal zone assuming similar geometrical ***,the local soil amplification which was disregarded in a previous analysis performed for Vrancea intermediate-depth earthquakes is now clearly *** results show minor differences between the four regions situated in front of the Carpathian Mountains and considerable differences in attenuation of seismic waves between the forearc and backarc regions（with regard to the Carpathian Mountains）.Consequently,an average Q model of the type Q（f） = 115×f^1.25 is obtained for the four forearc regions,while a separate Q model of the type Q（f） = 70×f^0.90 is computed for the backarc *** results highlight the need to evaluate the seismic hazard of Romania by using ground motion models which take into account the different attenuation between the forearc/backarc regions.

关键词： Fourier amplitude spectrum azimuth dependency source-to-site distance Q model local soil conditions

Acute myocardial infarction and extensive systemic thrombosis in thrombotic thrombocytopenic purpura: A case report and review of literature

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27期9卷 8104-8113页

作者： Delia Lidia Salaru Cristina andreea Adam Dragos Traian Marius Marcu Ionut Valentin Simon Liviu Macovei Lucian Ambrosie Elena Chirita radu Andy Sascau Cristian Statescu Department of Cardiology Institute of Cardiovascular Diseases“Prof.Dr.George I.M.Georgescu”Iasi 700503Romania Internal Medicine University of Medicine and Pharmacy“Grigore T.Popa IașiRomania”Iasi 700115Romania General Surgery “Sf.Spiridon”Emergency Hospital IasiIasi 700111Romania

BACKGROUND Thrombotic thrombocytopenic purpura(TTP)is a thrombotic microangiopathy characterized by the pentad of hemolytic anemia,fever,thrombocytopenia,renal failure,and neurological *** formation of microthrombi in the arterioles and capillaries of various organs is one of the main pathophysiological *** manifestations of cardiac involvement in TTP patients are *** myocardial infarction has been reported as a complication with TTP as the secondary thrombotic *** emergence as the initial thrombotic event is extremely *** SUMMARY A 49-year-old previously healthy man was admitted for fever,typical angina chest pain 3 d prior to presentation,and newly onset left lower limb *** electrocardiogram illustrated ST-elevation acute myocardial infarction of the anterolateral wall of the left *** echocardiography depicted two large thrombi at the apex of the left ventricle and moderately reduced ejection fraction(40%).Venous Doppler ultrasound showed occlusion of the left popliteal *** tests showed severe thrombocytopenia,mild hemolytic anemia,elevated D-dimers,and high troponin and creatine *** computed tomography revealed other thrombotic sites(superior mesenteric artery,posterior aortic wall,spleen and renal infarction,and ileum necrosis).He was immediately started on steroids and addressed to surgery for acute abdominal *** an initial stabilization of the hematological deficit,he went into general surgery for resection of the necrotic ileum but died soon after the intervention due to multiple organ *** Cardiac involvement in TTP patients is common,challenging and more often fatal,especially when other thrombotic complications coexist.

关键词： Thrombotic thrombocytopenic purpura Acute myocardial infarction Limb ischemia Systemic thrombosis Review Case report