检索结果-南通市图书馆

Indications and results of renal biopsy in children:a 36-year experience

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 Pediatrics 2018年第2期14卷 127-133页

作者： Luisa Santangelo giuseppe stefano netti Paolo Giordano Vincenza Carbone Marida Martino Diletta Domenica Torres Michele Rossini Anna Maria Di Palma Loreto Gesualdo Mario Giordano Unit of Pediatric Nephrology and Dialysis Pediatric Hospital"GiovanniⅩⅩⅢ"BariItaly Clinical Pathology Department of Medical and Surgical SciencesUniversity of FoggiaFoggiaItaly Unit of Nephrology Dialysis and TransplantationDepartment of Emergency and OrganTransplantationUniversity"Aldo Moro"BariItaly

Background This study was conducted to investigate retrospectively the indications for renal biopsy(RB)in native kidneys and to analyze pathological findings in a single tertiary pediatric hospital in Southern Italy for the last 36 *** All patients who underwent RB at our hospital from 1979 to 2014 were *** renal tissue specimens were studied under light and immunofluorescent microscopy,while electron microscopy was performed only for specific clinical *** The study group included 213 patients(female 43.2%)who underwent 225 percutaneous native kidney *** age was 10.4 years(range 0.6-24 years).The most frequent indication for RB was nephrotic syndrome(44.4%),fol-lowed by proteinuria(27.6%),asymptomatic hematuria(17.3%)and acute kidney injury(9.8%).Gross hematuria appeared after biopsy in less than 5%of the patients,but none of them needed blood *** renal tissue sample was obtained in 95.5%of the renal *** glomerulonephritis(GN)was the most common finding(61.4%),followed by secondary GN(21.4%),tubulointerstitial diseases(3.7%)and hereditary nephropathy(2.8%),while in 10.7%of the cases,normal renal tissues were *** to histopathological diagnosis,the most common causes of primary GN were IgA nephropathy(20.9%),followed by minimal change disease(18.1%)and focal segmental glomerulosclerosis(11.6%).Conclusions The epidemiology of glomerular disease in our single-center cohort is similar to that shown in other national and international ***,our study shows that percutaneous ultrasound-guided RB is a safe,reliable and effec-tive technique in children.

关键词： Epidemiology Glomerular diseases Nephropathy Pediatric patients Renal biopsy

An operator methodology for the global dynamic analysis of stochastic nonlinear systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Theoretical & Applied Mechanics Letters 2023年第3期13卷 164-169页

作者： Kaio C.B.Benedetti Paulo B.Goncalves stefano Lenci giuseppe Rega Department of Civil and Environmental Engineering Pontifical Catholic University of Rio de JaneiroRio de JaneiroBrazil Department of Civil and Building Engineering and Architecture Polytechnic University of MarcheAnconaItaly Department of Structural and Geotechnical Engineering Sapienza University of RomeRomeItaly

In a global dynamic analysis,the coexisting attractors and their basins are the main tools to understand the system behavior and ***,both basins and attractors can be drastically influenced by *** aim of this work is to illustrate a methodology for the global dynamic analysis of nondeterministic dynamical systems with competing ***,analytical and numerical tools for calculation of nondeterministic global structures,namely attractors and basins,are ***,based on the definition of the Perron-Frobenius,Koopman and Foias linear operators,a global dynamic description through phase-space operators is presented for both deterministic and nondeterministic *** this context,the stochastic basins of attraction and attractors’distributions replace the usual basin and attractor ***,numerical implementation of these concepts is accomplished via an adaptative phase-space discretization strategy based on the classical Ulam *** results of the methodology are presented for a canonical dynamical system.

关键词： Stochastic dynamics Global nonlinear dynamics Coexisting attractors Operator methodology Adaptative discretization Noise

Propulsion tests on ultra-high-temperature ceramic matrix composites for reusable rocket nozzles

在线全文

学校读者我要写书评

暂无评论

Journal of Advanced Ceramics 2023年第7期12卷 1345-1360页

作者： Diletta Sciti Antonio Vinci Luca Zoli Pietro Galizia Simone Failla stefano Mungiguerra giuseppe D.Di Martino Anselmo Cecere Raffaele Savino Institute of Science Technology and Sustainability for Ceramics-National Research CouncilFaenza 48018Italy Department of Industrial Engineering University of Naples Federico IINaples 80125Italy

Ultra-high-temperature ceramic matrix composites(UHTCMCs)based on a ZrB_(2)/SiC matrix have been investigated for the fabrication of reusable nozzles for *** de Laval nozzle prototypes,obtained by sintering with either hot pressing(HP)or spark plasma sintering(SPS),were tested 2-3 times in a hybrid rocket motor for proving *** were extracted after oxidation tests to study the microstructural changes and oxidative and thermomechanical stresses induced by the repeated *** to a reference graphite nozzle,no measurable erosion was observed for the UHTCMC-based *** oxidation mechanism consisted in the formation of a ZrO_(2)intermediate layer,with a liquid silicon oxide(SiO_(2))layer on the surface that was displaced by the action of the gas flux towards the divergent part of the nozzle,protecting it from further *** specimens obtained by HP and SPS displayed similar performance,with very slight differences,which were attributed to small changes in *** tests demonstrated the capability of complex-shaped prototypes made of the developed UHTCMCs to survive repeated exposure to environments representative of a realistic space propulsion application,for overall operating time up to 30 s,without any failure nor measurable erosion,making a promising step towards the development of reusable rocket components.

关键词： ultra-high-temperature ceramics(UHTCs) ceramic matrix composites(CMCs) propulsion oxidation resistance nozzle prototypes

Feasibility of therapeutic endoscopic ultrasound in the bridge-to-surgery scenario:The example of pancreatic adenocarcinoma

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 2022年第10期28卷 976-984页

作者： giuseppe Vanella Domenico Tamburrino Gabriele Capurso Michiel Bronswijk Michele Reni giuseppe Dell'Anna stefano Crippa Schalk Van der Merwe Massimo Falconi Paolo Giorgio Arcidiacono Pancreatobiliary Endoscopy and EUS Division Pancreas Translational&Clinical Research CenterIRCCS San Raffaele Scientific InstituteVita-Salute San Raffaele UniversityMilan 20132Italy Pancreatic Surgery Unit Pancreas Translational&Clinical Research CenterIRCCS San Raffaele Scientific InstituteVita-Salute San Raffaele UniversityMilan 20132Italy Department of Gastroenterology and Hepatology University Hospital GasthuisbergUniversity of LeuvenLeuven 3000Belgium Department of Gastroenterology and Hepatology Imelda HospitalBonheiden 2820Belgium Department of Medical Oncology Pancreas Translational&Clinical Research CenterIRCCS San Raffaele Scientific InstituteMilan 20132Italy

Upfront resection is becoming a rarer indication for pancreatic ductal adenocarcinoma,as biologic behavior and natural history of the disease has boosted indications for neoadjuvant ***,gastric outlet obstruction and acute cholecystitis can frequently complicate this window of opportunity,resulting in potentially deleterious chemotherapy discontinuation,whose resumption relies on effective,prompt and long-lasting management of these *** therapeutic endoscopic ultrasound(t-EUS)can potentially offer some advantages over comparators,its use in potentially resectable patients is primal and has unfairly been restricted for fear of potential technical difficulties during subsequent *** is a narrative review of available evidence regarding EUS-guided choledochoduodenostomy,gastrojejunostomy and gallbladder drainage in the bridge-to-surgery ***-ofconcept evidence suggests no influence of t-EUS procedures on outcomes of eventual subsequent ***,the very high efficacy-invasiveness ratio over comparators in managing pancreatic cancer-related symptoms or complications can provide a powerful weapon against chemotherapy discontinuation,potentially resulting in higher subsequent *** evidence is discussed in this short paper,together with technical notes that might be useful for endoscopists and surgeons operating in this *** published evidence supports restricting t-EUS in potential surgical candidates,especially in the setting of pancreatic cancer patients undergoing neoadjuvant ***-to-surgery tEUS deserves further prospective evaluation.

关键词： Endosonography Gastrojejunostomy Choledochoduodenostomy Gallbladder drainage Pancreatic cancer Pancreatic surgery

Optimal flow conditions of a tracheobronchial model to reengineer lung structures

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2017年第2期33卷 284-294页

作者： stefano Casarin Federico Aletti giuseppe Baselli Marc Garbey LASIE UMR CNTS Univeristy of La Rochelle La Rochelle France Houston Methodist Hospital Research Institute Houston TX USA Dipartimento di Elettronica Informazione e Bioingegneria Politecnico di Milano Milan Italy

The high demand for lung transplants cannot be matched by an adequate number of lungs from donors. Since fully ex-novo lungs are far from being feasible, tissue engineering is actively considering implantation of engineered lungs where the devitalized structure of a donor is used as scaffold to be repopulated by stem cells of the receiving patient. A decellularized donated lung is treated inside a bioreactor where transport through the tracheobronchial tree (TBT) will allow for both deposition of stem cells and nourishment for their subsequent growth, thus developing new lung tissue. The key concern is to set optimally the boundary conditions to utilize in the bioreactor. We propose a predictive model of slow liquid ventilation, which combines a one-dimensional (1-D) mathematical model of the TBT and a solute deposition model strongly dependent on fluid velocity across the tree. With it, we were able to track and drive the concentration of a generic solute across the airways, looking for its optimal distribution. This was given by properly adjusting the pumps’ regime serving the bioreactor. A feedback system, created by coupling the two models, allowed us to derive the optimal pattern. The TBT model can be easily invertible, thus yielding a straightforward flow/pressure law at the inlet to optimize the efficiency of the bioreactor.

关键词： Bioreactor Lung rehabilitation Network flow Tissue engineering Transport of solute

Environmental complaint insights through text mining based on the driver,pressure,state,impact,and response(DPSIR)framework:Evidence from an Italian environmental agency

在线全文

学校读者我要写书评

暂无评论

区域可持续发展(英文) 2023年第3期4卷 261-281页

作者： Fabiana MANSERVISI Michele BANZI Tomaso TONELLI Paolo VERONESI Susanna RICCI Damiano DISTANTE stefano FARALLI giuseppe BORTONE Regional Agency for Prevention Environment and Energy of Emilia-RomagnaVia Po 5Bologna40139Italy Department of Law and Economics University of Rome Unitelma SapienzaPiazza Sassari 4Rome00161Italy Department of Computer Science Sapienza University of RomeViale Regina Elena 295Rome00161Italy

Individuals,local communities,environmental associations,private organizations,and public representatives and bodies may all be aggrieved by environmental problems concerning poor air quality,illegal waste disposal,water contamination,and general *** complaints represent the expressions of dissatisfaction with these *** the timeconsuming of managing a large number of complaints,text mining may be useful for automatically extracting information on stakeholder priorities and *** paper used text mining and semantic network analysis to crawl relevant keywords about environmental complaints from two online complaint submission systems:online claim submission system of Regional Agency for Prevention,Environment and Energy(Arpae)(“Contact Arpae”);and Arpae's internal platform for environmental pollution(“Environmental incident reporting portal”)in the Emilia-Romagna Region,*** evaluated the total of 2477 records and classified this information based on the claim topic(air pollution,water pollution,noise pollution,waste,odor,soil,weather-climate,sea-coast,and electromagnetic radiation)and geographical ***,this paper used natural language processing to extract keywords from the dataset,and classified keywords ranking higher in Term Frequency-Inverse Document Frequency(TF-IDF)based on the driver,pressure,state,impact,and response(DPSIR)*** study provided a systemic approach to understanding the interaction between people and environment in different geographical contexts and builds sustainable and healthy *** results showed that most complaints are from the public and associated with air pollution and ***(particularly foundries and ceramic industries)and farms are identified as the drivers of environmental *** believed that environmental issues mainly affect human ***,the keywords of“odor”,“report”,“request”,“presence”,“municipality”,and“hours”were the most influ

关键词： Environmental complaints Text mining approach Term Frequency-Inverse Document Frequency(TF-IDF) Driver pressure state impact and response(DPSIR)framework Semantic network analysis Regional Agency for Prevention Environment and Energy(Arpae)

Collision nodal metastasis of bladder cancer and melanoma:The first reported case and literature review

在线全文

学校读者我要写书评

暂无评论

Current Urology 2022年第3期16卷 168-171页

作者： Francesca Sanguedolce Francesco Troiano Giovanni Musci Magda Zanelii Maurizio Zizzo stefano Ascan giuseppe Carrieri Luigi Cormio Department of Pathology University HospitalFoggia71121Italy Department of Urology and Renal Transplantation University of FoggiaFoggiaItaly Pathology Unit Azienda UnitàSanitaria Locale-IRCCS di Reggio EmiliaReggio EmiliaItaly Surgical Oncology Unit Azienda UnitàSanitaria Locale-IRCCS di Reggio EmiliaReggio EmiliaItaly Clinical and Experimental Medicine University of Modena and Reggio EmiliaModenaItaly Pathology Unit Azienda Ospedaliera Santa Maria di TerniUniversity of PerugiaTerniItaly

Collision metastasis is a rare phenomenon of concomitant localization of 2 or more different tumors in the same lymph *** most cases,primary malignancies are synchronous carcinomas arising in the same organ or area of the body.A 82-year-old man presented with hematuria and acute renal failure;he had undergone dermatological consultation ten months ago because of a large deep brown skin lesion in his dorso-lumbar region,which was not excised upon patient's *** underwent radical cystectomy with extended pelvic lymphadenectomy due to nonpapillary high-grade urothelial carcinoma,with focal squamous features,infiltrating the bladder wall and prostate *** one left iliac lymph node,small foci of metastatic urothelial carcinoma(positive for P63 and CK34betaE12)were close to melanoma cells(positive for HMB45).The patient refused further treatment and died of metastatic disease 12 months after *** is no specific clinical feature for nodal collision metastasis.A polymorphic histologic appearance poses the suspect,but immunohistochemical stains are needed to define the primary *** metastases are thought to carry a poor *** clinical relevance is linked to the fact that the patient faces 2 different metastatic tumors that may require specific multidisciplinary approach once diagnosed as *** present,to the best of our knowledge,the first case of collision nodal metastasis from bladder cancer and melanoma,and describe its clinical and histopathological characteristics to raise awareness on this rare occurrence,which portends a poorer prognosis than each single tumor.

关键词： Bladder Cancer Collision tumor Melanoma Nodal metastasis

Worldwide epidemiology of liver hydatidosis including the Mediterranean 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

World Journal of Gastroenterology 2012年第13期18卷 1425-1437页

作者： giuseppe Grosso Salvatore Gruttadauria Antonio Biondi stefano Marventano Antonio Mistretta Department"G.F.Ingrassia"Section of Hygiene and Public Health University of Catania95123 CataniaItaly Istituto Mediterraneo Trapianti e Terapie ad Alta Specializzazione-University of Pittsburgh Medical Center in Italy 90127 PalermoItaly Section of General Surgery and Oncology Department of General SurgeryUniversity of Catania95123 CataniaItaly

The worldwide incidence and prevalence of cystic echinococcosis have fallen dramatically over the past several ***,infection with Echinococcus granulosus(***)remains a major public health issue in several countries and regions,even in places where it was previously at low levels,as a result of a reduction of control programmes due to economic problems and lack of *** distribution differs by country and region depending on the presence in that country of large numbers of nomadic or semi-nomadic sheep and goat flocks that represent the intermediate host of the parasite,and their close contact with the final host,the dog,which mostly provides the transmission of infection to *** greatest prevalence of cystic echinococcosis in human and animal hosts is found in countries of the temperate zones,including several parts of Eurasia(the Mediterranean regions,southern and central parts of Russia,central Asia,China),Australia,some parts of America(especially South America)and north and east *** is currently considered an endemic zoonotic disease in the Mediterranean *** most frequent strain associated with human cystic echinococcosis appears to be the common sheep strain(G1).This strain appears to be widely distributed in all *** purpose of this review is to examine the distribution of *** and the epidemiology of a re-emerging disease such as cystic echinococcosis.

关键词：地中海地区流行病学包虫病公共卫生问题大肠杆菌感染中间宿主人畜共患病控制方案

Light Electrospun Polyvinylpyrrolidone Blanket for Low Frequencies Sound Absorption

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2018年第12期36卷 1368-1374页

作者： Joshua Avossa Francesco Brand Francesco Marulo giuseppe Petrone stefano Guido Giovanna Tomaiuolo Aniello Costantini Dipartimento di Ingegneria Chimica dei Materiali e della Produzione lndustriale (DICMaPI) Universitgt degli Studi di Napoli Federico II Napoli Italy Dipartimento di lngegneria Industriale (DII) Universita degli Studi di Napoli Federico II Napoli Italy

Light polymeric soundproofing materials （density = 63 kg/m3） of interest for the transportation industry were fabricated through electrospinning. Blankets of electrospun polyvinylpyrrolidone （average fiber diameter = （1.6 ± 0.5） or （2.8 ± 0.5） μm） were obtained by stacking disks of electrospun mats. The sound absorption coefficients were measured using the impedance tube instrument based on ASTM E1050 and ISO 10534-2. For a given set of disks （from a minimum of 6） the sound absorption coefficient changed with the frequency （in the range 200-1600 Hz） following a bell shape curve with a maximum （where the coefficient is greater than 0.9） that shifts to lower frequencies at higher piled disks number and greater fiber diameter. This work showed that electrospinning produced sound absorbers with reduced thickness （2-3 cm） and excellent sound-absorption properties in the low and medium frequency range.

关键词： Electrospinning Polyvinylpyrrolidone (PVP) Sound absorption Impedance tube