Use of curved adhesively bonded anchorage for a pultruded composite cable

International audienceIn order to join a plane composite cable to the main structure of a composite footbridge designed within (Caron, 2009), it was decided to investigate structural adhesive bonding. This technique is indeed particularly adapted to composite materials. However structural adhesive bonding induces stress concentrations at the edges of the adhesive joint, which have been studied by a large number of researchers in order to reduce these phenomena and increase the capacity and service life of the bonded joint (Kinloch, 1987). These studies are all concerned with optimizing shear stress transfer in adhesively bonded joints. This paper investigates the role of hydrostatic pressure on the ultimate capacities of common civil engineering adhesives. The conclusions led us to study a new joint geometry, the " curved " bonded joint that naturally creates compressive stresses on the edge of the bonded joint. Several experimental investigations are presented within this paper to illustrate the optimization. These are quasi-static tests that compare classical shear lap joints to curved joints. Additional testing is currently in progress, but the curved bonded joint seems to hold good prospects and a patent has been filed

Use of a curved adhesively bonded anchorage for a pultruded composite cable

7th International Conference on FRP Composites in Civil Engineering (CICE), VANCOUVER, CANADA, 20-/08/2014 - 22/08/2014In order to join a plane composite cable to the main structure of a composite footbridge designed within (Caron, 2009), it was decided to investigate structural adhesive bonding. This technique is indeed particularly adapted to composite materials. However structural adhesive bonding induces stress concentrations at the edges of the adhesive joint, which have been studied by a large number of researchers in order to reduce these phenomena and increase the capacity and service life of the bonded joint (Kinloch, 1987). These studies are all concerned with optimizing shear stress transfer in adhesively bonded joints. This paper investigates the role of hydrostatic pressure on the ultimate capacities of common civil engineering adhesives. The conclusions led us to study a new joint geometry, the 'curved' bonded joint that naturally creates compressive stresses on the edge of the bonded joint. Several experimental investigations are presented within this paper to illustrate the optimization. These are quasi-static tests that compare classical shear lap joints to curved joints. Additional testing is currently in progress, but the curved bonded joint seems to hold good prospects and a patent has been filed

State of Art about water uses and wastewater management in Lebanon

12 p.International audienceThis paper shows the real situation about management of water and wastewater in Lebanon and focuses on problems related to urban water pollution released in environment. Water and wastewater infrastructures have been rebuilt since 1992. However, wastewater management still remains one of the greatest challenges facing Lebanese people, since water supply projects have been given priority over wastewater projects. As a consequence of an increased demand of water by agricultural, industrial and household sectors in the last decade, wastewater flows have been increased. In this paper, the existing wastewater treatment plants (WWTP) operating in Lebanon are presented. Most of them are small-scale community-based ones, only two large-scale plants, constructed by the government, are currently operational. Lebanese aquatic ecosystems are suffering from the deterioration of water quality because of an insufficient treatment of wastewater, which is limited mostly to pre-treatment processes. In fact, domestic and industrial effluents are mainly conducted together in the sewer pipes to the WWTP before being discharged, without adequate treatment into the rivers or directly into the Mediterranean Sea. Such discharges are threatening the coastal marine ecosystem in the Mediterranean basin. This paper aims at giving the current state of knowledge about water uses and wastewater management in Lebanon. The main conclusion drawn from this state of art is a lack of data. In fact, the available data are limited to academic researches without being representative on a national scale

Biofiltration vs conventional activated sludge plants: what about priority and emerging pollutants removal?

International audience: This paper compares the removal performances of two complete wastewater treatment plants (WWTPs) for all priority substances listed in the Water Framework Directive and additional compounds of interest including flame retardants, surfactants, pesticides, and personal care products (PCPs) (n = 104). First, primary treatments such as physicochemical lamellar settling (PCLS) and primary settling (PS) are compared. Similarly, biofiltration (BF) and conventional activated sludge (CAS) are then examined. Finally, the removal efficiency per unit of nitrogen removed of both WWTPs for micropollutants is discussed, as nitrogenous pollution treatment results in a special design of processes and operational conditions. For primary treatments, hydrophobic pollutants (log K ow > 4) are well removed (>70 %) for both systems despite high variations of removal. PCLS allows an obvious gain of about 20 % regarding pollutant removals, as a result of better suspended solids elimination and possible coagulant impact on soluble compounds. For biological treatments, variations of removal are much weaker, and the majority of pollutants are comparably removed within both systems. Hydrophobic and volatile compounds are well (>60 %) or very well removed (>80 %) by sorption and volatilization. Some readily biodegradable molecules are better removed by CAS, indicating a better biodegradation. A better sorption of pollutants on activated sludge could be also expected considering the differences of characteristics between a biofilm and flocs. Finally, comparison of global processes efficiency using removals of micropollutants load normalized to nitrogen shows that PCLS + BF is as efficient as PS + CAS despite a higher compactness and a shorter hydraulic retention time (HRT). Only some groups of pollutants seem better removed by PS + CAS like alkylphenols, flame retardants, or di-2-ethylhexyl phthalate (DEHP), thanks to better biodegradation and sorption resulting from HRT and biomass characteristics. For both processes, and out of the 68 molecules found in raw water, only half of them are still detected in the water discharged, most of the time close to their detection limit. However, some of them are detected at higher concentrations (>1 μg/L and/or lower than environmental quality standards), which is problematic as they represent a threat for aquatic environment

O investimento eleitoral e as elites político-empresariais nas comissões da câmara dos deputados em 2016

Orientador : Prof. Dr. Ivan Jairo JunckesDissertação (mestrado) - Universidade Federal do Paraná, Setor Litoral, Programa de Pós-Graduação em Desenvolvimento Territorial Sustentável. Defesa: Matinhos, 23/08/2017Inclui referências : f. 91-97Resumo: A presente dissertação versa sobre a investigação das relações entre o financiamento eleitoral empresarial dos deputados federais eleitos para a 55ª Legislatura (2015-2019) e a composição das comissões permanentes na Câmara Federal durante o exercício legislativo de 2016. Apresentam-se as seguintes questões para análise: Como estão formadas as redes de financiamento dos parlamentares membros das comissões? Quem são os financiadores de maior influência e a quais grupos econômicos estão vinculados? As fontes da pesquisa são o site da Câmara dos Deputados, as páginas eletrônicas dos principais grupos econômicos que realizaram investimentos eleitorais em 2014 e as informações sobre candidatos e sobre a prestação de contas eleitorais disponibilizadas pelo Tribunal Superior Eleitoral (TSE) e organizados em banco de dados pelo Grupo de Estudos Territoriais (GETE/UEPG). Os dados foram submetidos à metodologia Análise das Redes Sociais (ARS) e processados no programa Gephi, utilizando-se também planilhas eletrônicas e editor de texto para o trabalho. Os resultados evidenciam uma acentuada conectividade do capital financiador e a direcionalidade dos recursos de financiamento para comissões cujas funções estão diretamente associadas aos interesses dos agentes corporativos. Palavras-Chave: Financiamento eleitoral; Câmara dos Deputados; Comissões Permanentes; Grupos de interesse e pressão; Análise de Redes Sociais.Abstract: This dissertation is about the investigation of the relationship between the corporate election financing of federal deputies elected to the 55th Legislature (2015-2019) and the composition of the standing committees in the Federal Chamber during the 2016 legislative exercise. The following questions for analysis: How are the funding networks of parliamentarians committee members formed? Who are the most influential financiers and to which economic groups are they linked? The sources of the research are the website of the Chamber of Deputies, the electronic pages of the main economic groups that carried out electoral investments in 2014, and the information on candidates and the electoral accounts provided by the Superior Electoral Court (TSE) and organized in a bank The Territorial Studies Group (GETE / UEPG). The data were submitted to the methodology of Social Network Analysis (SNA) and processed in the Gephi program, using also spreadsheets and text editor for the work. The results show a strong connectivity of financing capital and the directionality of financing resources for commissions whose functions are directly associated with the interests of corporate agents. Key words: Electoral financing; Chamber of Deputies; Standing Committees; Interest and pressure groups; Social Network Analysis

O que é fundo imobiliário? : quais as vantagens e desvantagens de investir

Orientador : Elenilton Rüdiger JohannArtigo (especialização) - Universidade Federal do Paraná, Setor de Ciências Sociais Aplicadas, Curso de Especialização MBA em FinançasInclui referênciasResumo: Pretende-se neste artigo apresentar alguns apontamentos sobre as modalidades de finanças do fundo imobiliário. Analisando seu formato de investimento e principalmente seu objetivo de aplicação de recursos nos negócios imobiliários. Este texto está dividido em quatro partes, sendo que na primeira parte é informada a definição e suas modalidades. Na segunda envolve o funcionamento do investimento imobiliário. No terceiro ponto as vantagens e desvantagens. E por fim o fundo imobiliário com seus prós e contras em relação aos fundos de renda fix

Visualization of the renal vein during pyelography after nephrostomy: a case report

<p>Abstract</p> <p>Introduction</p> <p>We present a case of pyelovenous backflow after nephrostomy. To the best of our knowledge, this is the first documented case of renal vein visualization after a nephrostomic placement.</p> <p>Case presentation</p> <p>A 55-year-old Caucasian man presented with symptoms of pyelonephritis with an obstructing ureteral stone. A nephrostomy was performed. During an injection of contrast agent in his left caliceal system, his left renal vein was visualized. A repeat pyelography with an injection contrast material at low pressure failed to show the same finding. This radiological finding is due to the occurrence of "pyelovenous backflow".</p> <p>Conclusion</p> <p>This phenomenon is usually described in the setting of renal vein thrombosis, renal vein hypertension due to the "nutcracker phenomenon", or a reduced renal blood flow. Examination by microscopy shows the presence of tears in the fornix of the pelvic cavity that extend into the kidney parenchyma. Five types of renal backflow are described in the literature: pyelovenous, pyelolymphatic, pyelotubular, pyelointerstitia and pyelosinus. Injection of contrast material at high pressure may cause a fornix to flow into the tubules, or cause its rupture and flow into the venous system.</p

Radiosensitization by 2-benzoyl-3-phenyl-6,7-dichloroquinoxaline 1,4-dioxide under oxia and hypoxia in human colon cancer cells

BACKGROUND: The sensitizing effects of 2-benzoyl-3-phenyl-6,7-dichloroquinoxaline 1,4-dioxide (DCQ) and ionizing radiation (IR) were determined in four colon cancer cells and in FHs74Int normal intestinal cells. METHODS: Cell cycle modulation, TUNEL assay, clonogenic survival and DNA damage were examined under oxia or hypoxia. Effects on apoptotic molecules and on p-Akt and Cox-2 protein expression were investigated. RESULTS: The four cell lines responded differently to DCQ+IR; HT-29 cells were most resistant. Combination treatment caused significant increases in preG(1 )(apoptosis) in HCT-116, while G(2)/M arrest occurred in DLD-1. DCQ potentiated IR effects more so under hypoxia than oxia. Pre-exposure of DLD-1 to hypoxia induced 30% apoptosis, and G(2)/M arrest in oxia. The survival rate was 50% lower in DCQ+IR than DCQ alone and this rate further decreased under hypoxia. FHs74Int normal intestinal cells were more resistant to DCQ+IR than cancer cells.Greater ssDNA damage occurred in DLD-1 exposed to DCQ+IR under hypoxia than oxia. In oxia, p-Akt protein expression increased upon IR exposure and drug pre-treatment inhibited this increase. In contrast, in hypoxia, exposure to IR reduced p-Akt protein and DCQ restored its expression to the untreated control. Apoptosis induced in hypoxic DLD-1 cells was independent of p53-p21 modulation but was associated with an increase in Bax/Bcl-2 ratio and the inhibition of the Cox-2 protein. CONCLUSION: DCQ is a hypoxic cell radiosensitizer in DLD-1 human colon cancer cells

Extraneural metastases from cranial meningioma: a case report

Extracranial metastases from brain meningiomas is a rare, but well-documented entity. Metastases occur mostly in the lungs, pleura and liver, but may also affect lymph nodes and bones. We report here on a patient who was treated for an atypical brain meningioma with multiple surgeries and multiple sessions of stereotactic radiosurgery with good control of his brain disease. Thirteen years after diagnosis, he developed bilateral large sacroiliac and abdominal metastases