检索结果-南通市图书馆

Transcranial Doppler Ultrasonography to Prevent Cerebrovascular Accident in Children with Sickle-Cell Disease

在线全文

学校读者我要写书评

暂无评论

Neuroscience & Medicine 2019年第2期10卷 162-173页

作者： Giuliana Carpentieri-Pipolo Marcelo de Lima Oliveira Fernando Mendes Paschoal Junior edson bor-seng-shu Brazilian Ministry of Health S&#227 o Paulo Brazil Department of Neurosurgery Hospital das Clínicas School of Medicine of University of S&#227 o Paulo S&#227 o Paulo Brazil

Sickle-cell disease (SCD) is the most common cause of ischemic stroke in children and it happens in about 11% of patients between the age of 2 and 20 years old. About 7% of the world population is affected by hemoglobin disorders, mostly sickle cell anemia. SCD has a high prevalence in the population of African offspring and it is a public health problem in Brazil that affects more than 30,000 million people. Prevention of primary stroke might be feasible with a way to identify children at greatest risk. Transcranial Doppler Ultrasonography (TCD) to SCD patients can be a valuable service that results in a significant decrease of first stroke rates. In this work, we present a review about TCD as an effective strategy to detect children with SCD who are at risk for stroke.

关键词： Transcranial Doppler Sickle Cell Disease Stroke in Children Cerebrovascular Disease

Multimodal brain monitoring in fulminant hepatic failure

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 Hepatology 2016年第22期8卷 915-923页

作者： Fernando Mendes Paschoal Jr Ricardo Carvalho Nogueira Karla De Almeida Lins Ronconi Marcelo de Lima Oliveira Manoel Jacobsen Teixeira edson bor-seng-shu Laboratory for Neurosonology and Cerebral Hemodynamics Department of Neurology Hospital das Clinicas Sao Paulo University Medical School Department of Neurology Division of Neurosurgery Hospital das Clinicas Sao Paulo University Medical School

Acute liver failure, also known as fulminant hepatic failure(FHF), embraces a spectrum of clinical entities characterized by acute liver injury, severe hepatocellular dysfunction, and hepatic encephalopathy. Cerebral edema and intracranial hypertension are common causes of mortality in patients with FHF. The management of patients who present acute liver failure starts with determining the cause and an initial evaluation of prognosis. Regardless of whether or not patients are listed for liver transplantation, they should still be monitored for recovery, death, or transplantation. In the past, neuromonitoring was restricted to serial clinical neurologic examination and, in some cases, intracranial pressure monitoring. Over the years, this monitoring has proven insufficient, as brain abnormalities were detected at late and irreversible stages. The need for real-time monitoring of brain functions to favor prompt treatment and avert irreversible brain injuries led to the concepts of multimodal monitoring and neurophysiological decision support. New monitoring techniques, such as brain tissue oxygen tension, continuous electroencephalogram, transcranial Doppler, and cerebral microdialysis, have been developed. These techniques enable early diagnosis of brain hemodynamic, electrical, and biochemical changes, allow brain anatomical and physiological monitoring-guided therapy, and have improved patient survival rates. The purpose of this review is to discuss the multimodality methods available for monitoring patients with FHF in the neurocritical care setting.

关键词： Fulminant hepatic failure Cerebral edema Multimodality methods Intracranial hypertension Liver trans

A remote sensing approach to estimate the load bearing capacity of soil

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Information Processing in Agriculture 2024年第1期11卷 109-116页

作者： Italo Rômulo Mendes de Souza edson Eyji Sano Renato Paiva de Lima Anderson Rodrigo da Silva Statistics and Geoprocessing Laboratory Instituto Federal GoianoGeraldo Silva Nascimento RoadKm 2.575790-000 UrutaíGoiásBrazil Embrapa Cerrados BR-020 RoadKm 18Mailbox 0822373310-970 PlanaltinaDFBrazil Department of Soil Science ‘Luiz de Queiroz’College of AgricultureUniversity of São PauloAv.Pádua Dias235-AgronomiaPiracicabaSP 13418-900Brazil

Preconsolidation pressure(σp)of soil can be considered as an indicator of the Load Bearing Capacity(LBC),which is the tolerated surface pressure before compaction,often caused by the traffic of agricultural *** this pioneering study,a remote sensing approach was introduced to estimate LBC throughσp from soils of the“Rio Preto”Hydrographic Basin,Bahia State,Brazil,in a monthly time lapse from 2016 to ***,σp is measured by a laborious and time demanding laboratory analysis,making it unfeasible to map large *** innovative methodology of this work consists of combining active–passive satellite data on soil moisture and pedotransfer functions of clay content and water matric potential to obtain geo-located estimates ofσ*** were analysed under different classes of soil use,land cover and slope;95%confidence intervals were built for the time series of mean values of LBC for each *** overall seasonal variation in LBC estimates is similar in areas with annual crops,grasslands and natural vegetation,and flat areas are less affected by soil moisture variations over the year(between seasons).LBC decreased,in general,at about 0.5%a year in flat ***,these areas demand attention,since they occupy 86%of the Basin and are mostly subjected to agricultural soil management and surface pressure by heavy machinery.

关键词： Soil compaction SMAP Preconsolidation stress Brazilian Cerrado

A high-power electromagnetic source for disabling improvised explosive devices

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 Voltage 2024年第2期9卷 403-409页

作者： Laurent Ariztia Njomza Ibrahimi Alexey Zhabin Antoine Silvestre de Ferron Marc Rivaletto edson Martinod Valérie Bertrand Bucur Novac Laurent Pécastaing Universite de Pau et des Pays de l’Adour E2S UPPASIAMEPauFrance XLIM UMR CNRS BriveLimogesFrance CISTEME LimogesFrance Wolfson School of Mechanical Electrical and Manufacturing EngineeringLoughborough UniversityLoughboroughLeicestershireUK

Ultra-wideband(UWB)microwave sources driven by specialised pulsed power generators have experienced a considerable development in the last decade due to their wide domain of new applications such as defence or counter-terrorism *** authors present the main findings of a research dedicated to the development of a pulsed power-driven electromagnetic field source for disabling improvised explosive devices(IED).The pulsed power generator driving the source is a 13-stage compact Marx producing voltage pulses reaching an amplitude of 0.5 MV,with a pulse repetition frequency(PRF)of up to 100 *** generator is coupled to a bipolar pulse forming line,providing bipolar pulses with a dV/dt of around 1.6 MV/*** pulsed power system feeds an array composed of 16 Koshelev-type UWB antennas through an impedance matching *** resulting electromagnetic source is capable to produce pulsed electric fields(PEFs)having a figure-of-merit(FOM)of 1 ***,practical experiments were carried out to study the effects of the PEFs on *** targets used in the present study are M2B type flashbulbs,known to have the same susceptibility as the US army M6 *** configurations of wires(shielded,twisted,etc)with different lengths were used in connecting items inside these *** tests were performed by placing the flashbulbs at different distances to determine the essential parameters(i.e.,amplitude,duration,and frequency range)of the PEFs required to trigger *** overview of the experimental campaign and the main findings are also presented followed by conclusions.

关键词： power bipolar source

Different no-till grain production systems with Urochloa *** soil microbial community structure,biomass and activity in a tropical Ultisol

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Soil Ecology Letters 2024年第1期6卷 119-129页

作者： Matheus Emannuel Oliveira Vieira Lucas Dantas Lopes France Mario Costa Viviane Talamini edson Patto Pacheco Marcelo Ferreira Fernandes PPGAGRI Universidade Federal de SergipeAv.Marechal Rondons/n-49100-000-Sao CristovaoSEBrazil Embrapa Coastal Tablelands Av Govemador Paulo Barreto de Menezesn°3250-49025-040-AracajuSEBrazil

Integrated grain cropping systems promote soil health(SH)and *** biomass and activity(MBA)and community structure(MCS)are key to *** of maize with Urochloa pastures strongly impacts MBA and *** is more sensitive than MCS to shifts in grain cropping *** under continuous Urochloa increased microbial activity and AMF *** soils are prone to *** of conservation agricultural practices is essential to improve soil health,which is influenced by soil *** this study we analyzed shifts in microbial biomass and activity(MBA)and microbial community structure(MCS)based on fatty acid methyl esthers(FAMEs)between five no-till agricultural practices:maize monoculture(MM);maize annualy intercropped with Urochloa decumbens(M/Ud);M/Ud with soybean rotation every other year(M/Ud-S);M/Ud keeping the pasture for the next two years(M/Ud-Ud-Ud);and maize intercropped with *** keeping the pasture for the next two years(M/Ur-Ur-Ur).Results indicated that MBA was affected by the inclusion of Urochloa intercropping and by rotation with *** under a longer residence time with Urochloa in the field had higherβ-glucosidase activity and soil basal respiration,indicating a greater microbial *** was less affected than MBA by the investigated cropping *** changed only in the continuous pasture systems,which were enriched in arbuscular mycorrhyzal fungi(AMF).Additionally,the continuous pasture systems had lower microbial stress ratios than the other agricultural *** sum,our study showed that utilization of Urochloa *** longer periods in no-till agricultural practices contributes to increase microbial activity,AMF abundance and decrease microbial stress *** changes are primarily beneficial for soil health.

关键词： crop-pasture integration crop rotation no-tillage soil health microbial ecology

Synthesis of coral-like structures of Pr-Yb co-doped YIG: Structural,optical, magnetic and antimicrobial properties

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第3期42卷 543-554,I0004页

作者： A.Fernandez Francisca P.Araujo Y.Guerra S.Castro-Lopes J.Matilla-Arias Idglan S.de Lima edson C.Silva-Filho Josy A.Osajima F.Guerrero R.Pena-Garcia Federal University of Piau Graduate Program in Materials Science and EngineeringTeresinaPIBrazil Federal Rural University of Pernambuco Academic Unit of Cabo de Santo AgostinhoCabo de Santo AgostinhoPEBrazil Federal University of Piaui Department of PhysicTeresinaPBrazil Federal University of Pernambuco Graduate Program in Materials ScienceRecifePEBrazil University of Granma Departmentof Basic Sciences and Applied InformaticsFaculty of Technical SciencesBayamoCuba Federal University of Amazonas Department of PhysicManausAMBrazil Federal University of Pernambuco Department of PhysicRecifePEBrazil

Coral-like structures of the Y_(3-x)Pr_(x)Fe_(5-y)Yb_(y)O_(12),(0.00 ≤ x ≤ 0.04, 0.00 ≤ y ≤ 0.02) compound were synthesized using the sol-gel method. Structural investigation certified the YIG cubic crystal structure formation, without any secondary phase. It is shown that, the relatively large ionic radius of the dopant cations results in an expansion of the lattice parameter, variations in the Iona-O-Iondangle, Iona-O,Iond-O and Ionc-O bond distances and decrease in the average crystallite size. Fourier transform infrared(FTIR) and Raman measurements are essential to testify the single-phase formation of YIG crystal structure and are observed changes in the stretching and vibrational modes, respectively. The morphological study, energy dispersive spectroscopy(EDS) spectra and textural properties show corallike structures, peaks associated with Pr^(3+) and Yb^(3+) atoms and the effect of dopants on surface area,diameter, and pore volume, respectively. The optical analysis from diffuse reflectance spectra witnessed an increase in the optical gap band, a decrease in Urbach energy and blue shift in the charge transfer,correlated with the expansion of the unit cell due to the dopant's insertion in the YIG structure. A typical ferrimagnetic behavior is exhibited by the Y_(3-x)Pr_(x)Fe_(5-y)Yb_(y)O_(12)compound. The saturation magnetization(M_(s)), cubic anisotropy constant(K_(1)) and coercive field(H_(c)) increase with the Pr^(3+)cations content, as consequence of their magnetic nature and distribution around of Fe^(3+)ions due to the coexistence with the Yb^(3+). Finally, for the first time, antibacterial tests by mean of the direct contact method were performed for YIG co-doped with Pr^(3+)and Yb^(3+)and it is shown that, relatively high dosages of Pr^(3+) cations favored the activity against S. aureus, therefore, a new biological property for YIG doped with rare earths is presented.

关键词： Yttrium iron garnet(YIG) Coral-like structures Rare earths Band gap energy Magnetic properties Antimicrobial properties

Extrahepatic cholestasis associated with paracoccidioidomycosis:Challenges in the differential diagnosis of biliopancreatic neoplasia

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第6期16卷 2531-2540页

作者： Jose Sebastiao dos Santos Vitor de Moura Arrais William Jose Rosseto Ferreira Ricardo Ribeiro Correa Filho Mariangela Ottoboni Brunaldi Rafael Kemp Ajith Kumar Sankanrakutty Jorge Elias Junior Fernando Bellissimo-Rodrigues Roberto Martinez edson Zangiacomi Martinez Jose Celso Ardengh Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP) Departamento de Cirurgia e AnatomiaRibeirao Preto 14049-900Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de PatologiaRibeirao Preto 14048900Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de Imagens MédicasHematologia e Oncologia ClínicaRibeirao Preto 14048900Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de Medicina SocialRibeirao Preto 14015-010Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de Clínica MédicaRibeirao Preto 14015-010Sao PauloBrazil Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto da Universidade de Sao Paulo(FMRP-USP)Departamento de Cirurgia e AnatomiaRibeirao Preto 14049-900Sao PauloBrazil and Hospital MoriahServico de Endoscopia DigestivaSao Paulo 04084-002Sao PauloBrazil

BACKGROUND Paracoccidioidomycosis(PCM)may involve the hepatic pedicle and peripan creatic lymph nodes,cause damage to the bile duct and manifest,exceptionally,in combination with extrahepatic cholestasis(EHC),making investigation and treatment *** To investigate the management of patients with visceral PCM admitted with *** All patients diagnosed with PCM treated in a public,tertiary teaching hospital between 1982 and 2020 were retrospectively *** also identified with EHC were allocated to two groups according to the treatment approach for the purpose of comparing clinical,laboratory,and imaging findings,resources used for etiological diagnosis,treatment results,and *** analyses were performed using the linear mixed-effects model(random and fixed effects),which was adjusted using the PROC MIXED procedure of the SAS®9.0 software,and Fisher’s exact *** Of 1645 patients diagnosed with PCM,40(2.4%)had *** these,20(50.0%)lived in the rural area and 29(72.5%)were men,with a mean age of 27.1 years(3-65 years).Jaundice as first symptom and weight loss of at least 10 kg were observed in 16 patients(40.0%),and a mass in the head of the pancreas was observed in 8(20.0%).The etiological diagnosis was made by tissue collection during surgery in 4 cases(10.0%)and by endoscopic methods in 3 cases(7.5%).Twenty-seven patients(67.5%)received drug treatment alone(Group 1),whereas 13(32.5%)underwent endoscopic and/or surgical procedures in combination with drug treatment(Group 2).EHC was significantly reduced in both groups(40.7% in Group 1,with a mean time of 3 months;and 38.4% in Group 2,with a mean time of 7.5 months),with no statistically significant difference between *** recurrence rates,associated mainly with treatment nonadherence,were similar in both groups:37% in Group 1 and 15.4% in Group *** mortality rate was 18.5% in Group 1 and 23% in Group 2,with survival estimates of 71.3% and 72.5%,respectively,with

关键词： Cholestasis Jaundice Obstructive Blastomycosis Paracoccidioides Diagnosis Treatment

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

高速永磁电机定子铁心损耗的分析与计算

防爆电机 2024年第3期59卷 23-26页

作者：顾雪政 edson Jose Koshinski 许海峰万高(南通)电机制造有限公司江苏南通226010

为了提高高速永磁电机定子铁心损耗计算的准确性。首先,通过分析高速永磁电机定子铁心的磁化特性,给出了定子铁心的磁化轨迹图。然后,根据得到的磁化轨迹图对铁耗模型进行了改进,并依据有限元法验证了该解析法的准确性。最后,对比了样... 详细信息

为了提高高速永磁电机定子铁心损耗计算的准确性。首先,通过分析高速永磁电机定子铁心的磁化特性,给出了定子铁心的磁化轨迹图。然后,根据得到的磁化轨迹图对铁耗模型进行了改进,并依据有限元法验证了该解析法的准确性。最后,对比了样机铁心损耗的测试值,给出了优化后的新铁耗计算模型。样机定子铁耗计算模型的优化为高速永磁电机系列化设计提供了有力参考。

关键词：高速电机定子铁心损耗磁化特性有限元仿真

Petrogenesis of the Mayo-Darley tin formations,anorogenic complex of the Cameroon Line:implication for tin deposit

在线全文

学校读者我要写书评

暂无评论

Acta Geochimica 2023年第4期42卷 704-725页

作者： Ndema Mbongué Jean Lavenir Ndongfong edson Fuh Emmanuel Eseya Mengu Junior Department of Geology Faculty of SciencesUniversity of BueaP.O.Box 63BueaCameroon Department of Earth Sciences Faculty of SciencesUniversity of Yaounde IP.O.Box 812YaoundéCameroon

The Mayo-Darley massif is an anorogenic complex of the Cameroon Line that has a mantle ***-bearing rocks were analyzed by ICP-AES and INAA analytical *** purpose of this work was to provide new geochemical data for the Mayo-Darley tin formation and to understand its petrogenesis and the origin of tin *** Mayo-Darley tin deposit is made up of tin-granite,and tin-greisen,greisenification was developed on the borders of quartz *** rocks belong to the alkaline series and were classified into acid(SiO2-=61.6%–73.8%;65.4%–98%respectively)and basic(42.9%–47%SiO_(2))*** showed enrichment in HSFE,LILE,Ga/Al and chondrite normalized REE patterns indicating LREE enrichment relative to HREE with a negative Eu anomaly,only sample SB8 of tin-granite showed Eu/Eu*=*** display metaluminous,peralkaline,peraluminous,ferroan,high-K calc-alkaline to shoshonitic,alkalic to calcic affinity,and crystallized at800°*** chemistry of this deposit reflects the primary composition of granite,quartz monzonite,gabbro,and foid *** complex experienced multi-stage sub-solidus hydrothermal fluid reactions and shows variable alteration of feldspars alkali *** rocks are classified as A1-type granite,overlap with the OIB field,and were derived from a within-plate setting,similar to mantle non plumederived *** origin of tin mineralization in MayoDarley has a complex evolution,tin mineralization was derived from hydrothermal and hydrogenous metal-rich deposits and shows Sn–Hf–Zr and Sn–Tl–Nb *** new data confirm the complexity of the Mayo-Darley tin complex and elucidate the origin of tin mineralization.

关键词： Mayo-Darley Massif Cameroon Line Tingranite Tin-bearing greisen A1-type granite Sn–Hf–Zr Sn–Tl–Nb