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二氧化钛气凝胶基质中金纳米粒子的光催化活性和结构(英文)

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催化学报 2013年第4期34卷 734-740页

作者： Zsolt PAP andreea radu Izabella Jolan HIDI Georgian MELINTE Lucian DIAMANDESCU Traian POPESCU Lucian BAIA Virginia DANCIU Monica BAIA Faculty of Chemistry and Chemical Engineering Babes‐Bolyai University 11 Arany Janos str. 400028 Cluj-Napoca Romanla Faculty of Physics Babes‐Bolyai University 1 MihaiL Kogalniceanu str. 400084 Cluj-Napoca Romania National Institute of Materials Physics P.O.Box MG-777125 Bucharest-Magurele Romania Institute for Interdisciplinary Research in Bio‐Nano‐Sciences Babes‐Bolyai University 42 Treboniu Laurian str 400271 Cluj-Napoca Romania

TiO2 -Au aerogels containing different amounts of gold nanoparticles of different sizes (5 and 16 nm) were successfully synthesized using a sol-gel procedure, and were tested for salicylic acid photodegradation under UV irradiation. The structure and morphology of the obtained materials were investigated using X-ray diffraction, transmission electron microscopy, and N2 adsorption-desorption measurements. UV-Vis spectroscopy was used to study the optical properties. The effects of the gold nanoparticles on the TiO2 crystallization process were twofold, as follows: (i) the number of crystallized zones was strongly related to the concentration of the gold nanoparticles, and (ii) the smaller gold particles increased the time taken for the crystallization of the samples. It was found that the noble metal-doped samples exhibited higher degradation rates compared with bare titania. It was found that the most active photocatalyst in each studied system was the sample with the highest concentration of gold nanoparticles. Additionally, the highest degradation rate value was obtained with the smallest Au nanoparticles (46.4 10-3 μmol/(L·s).

关键词： Nanomaterial Sol‐gel Titania Salicylic acid Photocatalytic performance

Contrast-enhanced guided endoscopic ultrasound procedures

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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

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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)

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

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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

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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

Epidemiological trends in acute pancreatitis:A retrospective cohort in a tertiary center over a seven year period

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World Journal of Methodology 2023年第3期13卷 118-126页

作者： andreea Irina Ghiță Mihai radu Pahomeanu Lucian Negreanu Faculty of Medicine Carol Davila University of Medicine and PharmacyBucharest 050474Romania Internal Medicine I&Gastroenterology-University Emergency Hospital of Bucharest Carol Davila University of Medicine and PharmacyBucharest 050098Romania

BACKGROUND Acute pancreatitis(AP)remains a major cause of hospitalization and mortality with important health-related costs *** an electronic database of a large tertiary center,we estimated the incidence,etiology,severity and costs of hospitalized AP cases in southern *** To estimate the incidence,cost and tobacco usage of hospitalized AP cases in southern Romania and to update and upgrade the knowledge we have on the etiology,severity(in regard to Revised Atlanta Classification),outcome,morphology and local complications of *** We performed an electronic health care records search on AP patients treated at Emergency University Hospital of Bucharest(Spitalul Universitar de UrgențăBucurești)between 2015 and *** incidence,etiology,and severity were calculated;potential risk factors were evaluated,and the hospitalization costs of AP were documented and *** cohort of this study is part of the BUCharest-Acute Pancreatitis Index *** A total of 947 consecutive episodes of AP where the patients were hospitalized in the gastroenterology department were analyzed,with 79.45%as 1st episode and the rest *** majority of the patients were males(68.9%).Alcoholic(45.7%),idiopathic(16.4%)and biliary(15.2%)were the main *** incidence was estimated at 29.2 episodes/100000 *** median length of stay was 7 *** median daily cost was 747.96 RON(165 EUR).There was a high prevalence of active tobacco smokers(68.5%).The prevalence of severe disease was 11.1%.The admission rate to the intensive care unit was 4.6%,with a mortality rate of 38.6%.The overall mortality was 5.5%.CONCLUSION We estimated the incidence of AP at 29.2 episodes that required hospitalization per 100000 *** majority of our cases were found in males(68.9%)and were related to alcohol abuse(45.7%).Out of the cases we were able to find data regarding tobacco usage,the majority were active smokers(68.5%).Most patients had a mild course(54.4%)

关键词： Acute pancreatitis Epidemiology Revised Atlanta Classification Mortality Outcome Cost

Mucinous appendiceal neoplasm:A case report

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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

Artificial intelligence as a noninvasive tool for pancreatic cancer prediction and diagnosis

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World Journal of Gastroenterology 2023年第12期29卷 1811-1823页

作者： Alexandra Corina Faur Daniela Cornelia Lazar Laura andreea Ghenciu Department of Anatomy and Embriology “Victor Babeș”University of Medicine and Pharmacy TimișoaraTimișoara 300041TimișRomania Department V of Internal Medicine I Discipline of Internal Medicine IVUniversity of Medicine and Pharmacy“Victor Babes”TimișoaraTimișoara 300041TimișRomania DepartmentⅢ Discipline of Pathophysiology“Victor Babeș”University of Medicine and PharmacyTimișoara 300041TimișRomania

Pancreatic cancer(PC)has a low incidence rate but a high mortality,with patients often in the advanced stage of the disease at the time of the first *** detected,early neoplastic lesions are ideal for surgery,offering the best *** lesions of the pancreas include pancreatic intraepithelial neoplasia and mucinous cystic neoplasms,with intraductal papillary mucinous neoplasms being the most commonly *** study focused on predicting PC by identifying early signs using noninvasive techniques and artificial intelligence(AI).A systematic English literature search was conducted on the PubMed electronic database and other *** obtained a total of 97 studies on the subject of pancreatic *** final number of articles included in our study was 44,34 of which focused on the use of AI algorithms in the early diagnosis and prediction of pancreatic *** algorithms can facilitate diagnosis by analyzing massive amounts of data in a short period of *** can be made through AI algorithms by expanding image and electronic medical records databases,which can later be used as part of a screening program for the general ***-based screening models should involve a combination of biomarkers and medical and imaging data from different *** requires large numbers of resources,collaboration between medical practitioners,and investment in medical infrastructures.

关键词： Pancreatic cancer Early pancreatic lesions Pancreatic neoplasia Artificial intelligence Deep learning Machine learning Radiomics Diagnosis Pancreas

Allergic rhinitis facts from an Irish pediatric population

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2023年第4期9卷 333-339页

作者： andreea Nae Colleen B.Heffernan Michael Colreavy Department of Otorhinolaryngology Ireland

Objective:Assessing the main allergens in the pediatric population from the largest urban area in the ***:Clinical letters of patients referred with possible allergic rhinitis(AR)were retrospectively reviewed over the past 5 ***:Five hundred and fifty‐five patients were *** suffer twice as often with AR than females and have high titers of *** dust mites(44.7%)and grass pollen(29%)were the main allergens in our area,with 48%of patients sensitized to both *** of the patients had the diagnosis of AR confirmed with positive allergen‐specific *** the other half,the diagnosis was based on a clinical assessment performed by a pediatric ***:Half of suspected AR children have environmental allergen sensitivity confirmed by testing,and a large number had a clinical diagnosis of AR after an otolaryngology *** findings can help clinicians to initiate AR treatment considering the most problematic allergens in the area.

关键词： aeroallergens allergic rhinitis grass pollens house dust mites skin prick