检索结果-南通市图书馆

Experimental Acoustic Determination of the Void Fraction in Two-Phase Flow in Horizontal Pipelines

Journal of Mechanics Engineering and Automation 2014年第8期4卷 625-631页

作者： Fernando Augusto de Noronha Castro Pinto thiago de Campos Negrelly Alexandre Silva de Lima Mechanical Engineering Department UFRJ (Universidade Federal do Rio de Janeiro) Rio de Janeiro 21941-972 Brasil Mechanical Engineering Department CEFET/RJ (Centro Federal de Educag6o Tecnologica Celso Suckow da Fonseca) Rio deJaneiro 20271-110 Brasil

In multi-phase flows, the phases can flow and arranged in different spatial configurations in the pipe, which called flow patterns. This type of flow is found in the oil, chemical and nuclear industries. For example, in the production and transport of oil and gas, the identification of the flow patterns are essential for answering those questions which are related to the economic return of the field, such as, measuring the volumetric flow, determining the pressure drop along the flow lines, production management and supervision. In offshore production, these factors are very important. This paper presents a new method for measuring the void fraction in horizontal pipelines, taking the air as gas in water-air two-phase flow. Through acoustic analysis of the frequency response of the pipe, the method gets the parameters to changes in runoff regime, in an experimental arrangement constructed on a small scale. The main advantages are the non-intrusive characteristic and easy to implement. The paper is composed of a qualitative experimental evaluation and transducers （microphone） which are used to analyze variations in the response accompanying variations in void and flow pattern changes. Changes are imposed and controlled by a two-phase flow experimental simulation rig, including a measurement cell constituted of an external casing that can isolate the measurement from the environmental background noise fitted with acoustic pressure transducers radially arranged, and the impact of a monitored excitation mechanism. The signals which captured by the microphones are processed and analyzed by checking their frequency contents changes according to the amount of air in the mixture.

关键词： Experimental method two-phase flow determination of void fraction horizontal pipelines.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Root Canal Treatment Outcome and Restorative Condition of Teeth Treated by Undergraduates—A Clinical and Radiographic Evaluation

引用

Open Journal of Stomatology 2023年第9期13卷 257-270页

作者： Gabriela Tonet Bassani Bartelle Dianeia Miranda dos Reis thiago Oliveira Gamba Fabiana Vieira Vier-Pelisser School of Dentistry UCS—Caxias do Sul University Caxias do Sul Brazil School of Dentistry UFRGS—Federal University of Rio Grande do Sul Porto Alegre Brazil

Background: The aim was to evaluate the nonsurgical Root Canal Treatment (nRCT) outcome, the restorative condition and the relationship between the coronal restoration quality and the outcome of teeth endodontic treated by undergraduates at the University of Caxias do Sul School of Dentistry (UCS-SD), Brazil, between 2019 and 2021. Materials and Methods: Data from the endodontically treated cases were retrieved, and the patients were recalled for a follow-up appointment at the university. The endodontic diagnosis, radiographs, and the presence of definitive restorations were analyzed in the clinical records. During the follow-up appointment, endodontically treated teeth were classified as present or absent. The nRCT was classified as successful (complete or incomplete healing) or failure (uncertain or unsatisfactory healing). Coronal restoration was classified as absent or present. When it was present, it was classified as permanent or temporary, and its quality as adequate or inadequate restoration. The results were presented as percentages. Results: A total of 257 teeth were endodontically treated. The most prevalent diagnosis was Chronic Apical Periodontitis (33.33%) and the most commonly treated teeth were premolars (46.15%). A total of 52 (21%) treated teeth were clinically and radiographically reexamined. The success rate for the nRCT was 98.08%. About 61.54% of this sample had a definitive composite resin restoration. Conclusion: The nRCT success rate was high. Special attention should be given to the presence and quality of the definitive restoration. Clinical Implications: There was no statistically significant impact between the coronal restoration and the nRCT success (P > 0.05).

关键词： Periapical Periodontitis Permanent Dental Restoration Permanent Dental Filling Root Canal Obturation Treatment Outcome

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Postharvest Losses in the Wheat Logistics Chain： A Brazilian Case Study

引用

Journal of Agricultural Science and Technology(B) 2016年第5期6卷 321-329页

作者： Daniela Bacchi Bartholomeu Femando Vinlcius da Rocha thiago Guilherme Pera Jose Vicente Caixeta-Filho Research and Extension Group in Agroindustrial Logistics (ESALQ-LOG) University of Sao Paulo (USP) Piracicaba Sao PauloPostal Code 13418-900 Brazil

This paper highlighted the losses occurring along the wheat supply chain in Rio Grande do Sul （RS）, Brazil, which accounts for almost half of the domestic wheat production. Based on a field research, a questionnaire was applied to representative agents in the market. Then the wheat supply chain in the state of RS was characterized and loss rates in each stage of that chain were quantified. Typically, losses during transportation in the domestic market account for about 11.8% of the total amount of wheat grain that leaves the farms. Losses during harvest and storage in cooperatives, which account for 93.2% of total losses, stand out in this context. Transportation operations account for 6.8% of total losses in the analyzed flow. Based on the results obtained in this study, strategies are suggested to reduce food losses in different links of the logistics chain, such as to evidence and quantify the wheat losses, to manage losses and set reduction targets and to give attention to transportation service levels.

关键词： Postharvest losses wheat supply chain food security

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nitric oxide plays a key role in the suppressive activity of tolerogenic dendritic cells

引用

Cellular & Molecular Immunology 2015年第3期12卷 384-386页

作者： Liana Verinaud Luidy Kazuo Issayama Fabio Zanucoli Ana Carolina de Carvalho thiago Alves da Costa Rosaria Di Gangi Amanda Pires Bonfanti Isadora Tassinari Ferreira Alexandre Leite Rodrigues de Oliveira Dagmar Ruth Stach Machado Rodolfo Thome Department of Structural and Functional Biology Institute of Biology University of Campinas SP Brazil

Tolerogenic dendritic cells （DCs） are widely studied for their possible use in the treatment of inflammatory disorders, such as autoimmune diseases. One of the obstacles for the use of this cell-based therapy is the characterization of drugs that are able to modulate DCs. We have previously shown that chloroquine （CQ）, an antimalarial agent, has the ability to modulate DCs towards a tolerogenic phenotype.1 These tolerogenic DCs are able to suppress the development of experimental autoimmune encephalomyelitis （EAE）, a T cell-driven mouse model of human multiple sclerosis. In addition, several studies have proposed that nitric oxide （NO） plays a major role in the dif- ferentiation of regulatory T cells （Tregs） and the suppression of Thl/Th17 cells.2＂3 However, little is known about the role of DC-derived NO in the modulation of inflammatory auto- immune responses. Thus, we aimed to evaluate whether NO plays a role in the tolerogenic activity of CQ-treated DCs （CQ- DCs）. We found that CQ induces DC production of NO and expression of indoleamine 2,3-dioxygenase （IDO）, as well as inducible nitric oxide syrtthase （iNOS）.

关键词： suppressive activity tolerogenic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Evaluation of Cytotoxicity of <i>Gossypium barbadense</i>L. Extract in Bone Cord Cells through the Micronucleus Test

引用

Journal of Biosciences and Medicines 2017年第7期5卷 84-91页

作者： thiago Dornelas de Oliveira Joice Meire Rodrigues thiago Sande Miguel Nayrton Kalys Cruz dos Anjos Juscélio Clemente de Abreu Lamara Laguardia Valente Rocha Raquel Xavier Ligeiro Dias Daniel Almeida da Costa Academic of the Graduate Course in Medicine of the University Center of Caratinga Caratinga Brazil Religious Sciences from the Pontifical Catholic University of Sao Paulo Sao Paulo Brazil The Medical School at the Center of Higher Education of Valenca Valenca Brazil The Institute of Health Sciences of the University Center of Caratinga Caratinga Brazil Federal University of Lavras Lavras Brazil Federal University of Vicosa Vicosa Brazil Department of Biochemistry and Molecular Biology at the Federal University of Vicosa Vicosa Brazil Faculty of Medicine of Valenca Valenca Brazil

The cotton plant is a plant belonging to the family Malvaceae and its leaves are often used in folk medicine. The present study aimed to evaluate the mutagenic or antimutagenic activity of the ethanolic extract of Gossypium barbadense L. (EEG) and to analyze its capacity to prevent or repair mutagenic lesions caused by cyclophosphamide (CP). For the Micronucleus test, Swiss mice were divided into 5 groups: negative control;Positive control: treated with 50 mg/kg cyclophosphamide (CP), group receiving EEG 500 mg/kg for 7 days;Group receiving EEG 500 mg/kg for 7 days associated with CP24h before euthanasia;Group who received CP and EEG 500 mg/kg for 7 days. After the treatment period, the animals were euthanized, the bone marrow removed and the blood smear prepared. From this analysis, it was observed that the EEG caused a significant increase in the number of micronucleated erythrocytes, indicating mutagenic activity of the extract. In addition, it was verified that the extract did not present the capacity to prevent, but it presented the capacity of repair of the chromosomal damages caused by CP.

关键词： Gossypium Mutagenesis Phytotherapy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Metabolic Syndrome and DNA Damage: The Interplay of Environmental and Lifestyle Factors in the Development of Metabolic Dysfunction

引用

Open Journal of Endocrine and Metabolic Diseases 2015年第7期5卷 65-76页

作者： Giuseppe Potrick Stefani Giovana Baldissera Ramiro Barcos Nunes thiago Gomes Heck Cláudia Ramos Rhoden Laboratory of Physiology Universidade Federal de Ciências da Saúde de Porto Alegre Porto Alegre Brazil Laboratory of Oxidative Stress and Atmospheric Pollution Universidade Federal de Ciências da Saúde de Porto Alegre Porto Alegre Brazil Laboratory of Toxicological Genetics Universidade Federal de Ciências da Saúde de Porto Alegre Porto Alegre Brazil Research Group in Physiology Regional University of Northwestern State’s Rio Grande do Sul (UNIJUI) Ijuí Brazil Postgraduate Program in Integral Attention to Health Regional University of Northwestern State’s Rio Grande do Sul (UNIJUI) Ijuí Brazil Department of Pharmacologic Sciences Universidade Federal de Ciências da Saúde de Porto Alegre Porto Alegre Brazil

The Metabolic Syndrome (MetS) is a complex condition which is characterized by increased risk factor for cardiovascular diseases, such as dyslipidemia, hypertension and central obesity, in addition to increased risk for type 2 diabetes mellitus (T2DM). All of these factors alone have a notable relationship with DNA damage. However, when the risks are combined, the extent for major outcomes being related to DNA damage (cancer), the consequence can be accelerated by the metabolic dysfunction. This article will illustrate the scientific evidence of the role of DNA damage in MetS, as well as discuss the interplay of major risks factors (air pollution, physical inactivity and dietary interventions) in genomic stability.

关键词： Metabolic Syndrome DNA Damage Diet Physical Activity Air Pollution

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Corticosteroids for severe influenza pneumonia: A critical appraisal

引用

World Journal of Critical Care Medicine 2016年第1期5卷 89-95页

作者： Wagner Luis Nedel David Garcia Nora Jorge Ibrain Figueira Salluh thiago Lisboa Pedro Póvoa Intensive Care Unit Hospital Nossa Senhora da Concei??o Intensive Care Unit Vila Franca de Xira Hospital D’or Institute for Research and Education Critical Care Department Hospital de Clinicas de Porto Alegre Post-Graduation Program (PPG) Pneumology Universidade Federal do Rio Grande do Sul Polyvalent Intensive Care Unit S?o Francisco Xavier Hospital Centro Hospitalar de Lisboa Ocidental Nova Medical School CEDOC New University of Lisbon

Influenza pneumonia is associated with high number of severe cases requiring hospital and intensive care unit(ICU) admissions with high mortality. Systemic steroids are proposed as a valid therapeutic option even though its effects are still controversial. Heterogeneity of published data regarding study design, population demographics, severity of illness, dosing, type and timing of corticosteroids administered constitute an important limitation for drawing robust conclusions. However, it is reasonable to admit that, as it was not found any advantage of corticosteroid therapy in so diverse conditions, such beneficial effects do not exist at all. Its administration is likely to increase overall mortality and such trend is consistent regardless of the quality as well as the sample size of studies. Moreover it was shown that corticosteroids might be associated with higher incidence of hospital-acquired pneumonia and longer duration of mechanical ventilation and ICU stay. Finally, it is reasonable to conclude that corticosteroids failed to demonstrate any beneficial effects in the treatment of patients with severe influenza infection. Thus its current use in s evere influenza pneumonia should be restricted to very selected cases and in the setting of clinical trials.

关键词： Influenza Mechanical ventilation Pneumonia Corticosteroids Respiratory failure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

我来自广告主

引用

现代广告 2016年第15期 60-61页

作者： thiago Stelle Teixeira 沃尔沃拉美集团

首次参加戛纳幼狮比赛的我，身负着两点特殊之处。首先，因为同伴有事，此次我是独自一人来戛纳参加幼狮比赛的。这一点恐十白是幼狮赛事中不多见的。幼狮比赛的—般惯例是由一对选手搭档参赛。这一次—个人出战，连我自己都感觉自己像... 详细信息

首次参加戛纳幼狮比赛的我，身负着两点特殊之处。首先，因为同伴有事，此次我是独自一人来戛纳参加幼狮比赛的。这一点恐十白是幼狮赛事中不多见的。幼狮比赛的—般惯例是由一对选手搭档参赛。这一次—个人出战，连我自己都感觉自己像个超人。

关键词：广告主比赛惯例

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Endobiliary biopsy

引用

World Journal of Gastrointestinal Endoscopy 2022年第5期14卷 291-301页

作者： Riccardo Inchingolo Fabrizio Acquafredda Alessandro Posa thiago Franchi Nunes Stavros Spiliopoulos Francesco Panzera Carlos Alberto Praticò Interventional Radiology Unit "F.Miulli"General Regional HospitalAcquaviva delle Fonti 70021Italy Department of Radiology Policlinico Universitario“A.Gemelli”Rome 00186Italy Interventional Radiology Unit Universidade Federal de Mato Grosso do SulCampo Grande 79070-900Brazil 2^(nd)Department of Radiology Interventional Radiology UnitNational and Kapodistrian University of AthensAthens 12461Greece Interventional Gastroenterology Unit Madonna Delle Grazie HospitalMatera 75100Italy Unitéd’Endoscopie Digestive Hôpital Privé“Armand Brillard”3/5 avenue WatteauNogent-sur-Marne 94130France

The differential diagnosis between benign and malignant biliary strictures is challenging and requires a multidisciplinary approach with the use of serum biomarkers,imaging techniques,and several modalities of endoscopic or percutaneous tissue *** diagnosis of biliary strictures consists of laboratory markers,and invasive and non-invasive imaging examinations such as computed tomography(CT),contrast-enhanced magnetic resonance cholangiopancreatography,and endoscopic ultrasonography(EUS).Nevertheless,invasive imaging modalities combined with tissue sampling are usually required to confirm the diagnosis of suspected malignant biliary strictures,while pathological diagnosis is mandatory to decide the optimal therapeutic *** EUS-guided fine-needle aspiration biopsy is currently the standard procedure for tissue sampling of solid pancreatic mass lesions,its diagnostic value in intraductal infiltrating type of cholangiocarcinoma remains ***,the“endobiliary approach”using novel slim biopsy forceps,transpapillary and percutaneous cholangioscopy,and intraductal ultrasound-guided biopsy,is gaining ground on traditional endoscopic retrograde cholangiopancreatography and percutaneous transhepatic cholangiography endobiliary forceps *** review focuses on the available endobiliary techniques currently used to perform biliary strictures biopsy,comparing the diagnostic performance of endoscopic and percutaneous approaches.

关键词： Biliary strictures Endoscopic retrograde cholangiography Cholangioscopy Endobiliary forceps biopsy Intraductal ultrasound-guided biopsy Percutaneous transhepatic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Interannual Variability of Energy Flux in Atmospheric Instability Conditions at Pantanal of Mato Grosso-Brazil

引用

Atmospheric and Climate Sciences 2012年第4期2卷 518-524页

作者： Leone Francisco Amorim Curado José de Souza Nogueira Luciana Sanches Marcelo Sacardis Biudes thiago Rangel Rodrigues Programa de Pós-Graduacao em Física Ambiental-UFMT Brazil

The energy balance partitions in wetlands have gained notoriety due to the dynamics and importance of these areas for regional and local climate. Thus, the study was conducted about seasonal and interannual behavior energy fluxes, as well as the influences of the conditions of atmospheric stability and instability. The results showed highest fluxes happened in instability atmospheric conditions. The fluxes of latent and sensible heat showed seasonal variation, indicating that the water availability in the atmosphere has influence on the site energy partition, but the interannual patterns remained similar during the two years of study.

关键词： Latent Heat Sensible Heat Energy Partition Wetlands

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：