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2. Effects of digital and non-digital parental distraction on parent-child interaction and communication

Author

Souhir Chamam, Alexia Forcella, Nadia Musio, Florence Quinodoz, and Nevena Dimitrova

Subjects
screen, technoference, toddlers, interaction, language, Psychiatry, RC435-571, Pediatrics, RJ1-570
Abstract

Technoference, namely parental screen use in the presence of a child, is a widespread phenomenon that has negative effects on parent-child interaction and communication. When parents use screens around their children there are fewer interactions and parents are less contingent and responsive to the child. Additionally, children show more negative behaviors, such as whining, frustration, and outbursts. Communication is also affected—parents speak and gesture less towards their children and, in turn, children are less likely to develop their language abilities. It remains unclear, however, if parental distraction due to screen use affects parent-child interaction and communication more negatively compared to non-digital parental distraction. Fifty-two parent-child dyads (mean child age = 22 months, range 12–36 months) first played for 5 min (Time 1); then (Time 2), the parent was asked to fill out a questionnaire on a tablet (screen condition), on a printed form (paper-pen condition) or was not interrupted (control condition). Interactive quality was assessed at Time 1 and Time 2 using the Coding Interactive Behavior scale. Communication was assessed by coding the number of word tokens and types during Time 1 and Time 2; child gestures were also coded. Results revealed that when parents were distracted—either by the paper-pen or the screen questionnaire—the quality of the interaction significantly deteriorated (ps ≤ .01) and the quantity of parental communication significantly declined (ps ≤ .012). Importantly, the nature of the distraction did not matter: there were no significant differences between the paper-pen and the screen distraction conditions across Time 2 (ps ≥ .59). Findings suggest that parental distraction matters for the quality of interaction and the amount of communicative bids, independently on whether parents were distracted by a digital or non-digital activity. These findings likely relate to complex factors related to young children's experiences and habits with parental screen use.

Published
2024
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8. Genomic Surveillance of SARS-CoV-2 in North Africa: 4 years of GISAID data sharing

Author

Zaineb, Hamzaoui, primary, Sana, Ferjani, additional, Ines, Mdini, additional, Latifa, Charaa, additional, Ichrak, Landolsi, additional, Roua, Ben Ali, additional, Wissal, Khaled, additional, Sarra, Chamam, additional, Salma, Abid, additional, Lamia, Kanzari, additional, Asma, Ferjani, additional, Ahmed, Fakhfakh, additional, Dhouha, Kebaier, additional, Zoubeir, Bouslah, additional, Mouna, Ben Sassi, additional, Sameh, Trabelsi, additional, and Ilhem, Boutiba-Ben Boubaker, additional

Published
2024
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9. Unlocking hidden mineral resources: Characterization and potential of bitterns as alternative sources of critical raw materials

Author

Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. Doctorat en Enginyeria de Processos Químics, Universitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management, Randazzo, Serena, Vicari, Fabrizio, López Rodríguez, Julio, Salem, Mohamed, Lo Brutto, Rita, Azzouz, S., Chamam, S., Cataldo, Salvatore, Muratore, Nicola, Fernández de Labastida Ventura, Marcos, Vallés Nebot, Víctor, Pettignano, Alberto, D'alì Staiti, Giacomo, Pawlowski, Sylwin, Hannachi, Ahmed, Cortina Pallás, José Luis, Cipollina, Andrea, Universitat Politècnica de Catalunya. Departament d'Enginyeria Química, Universitat Politècnica de Catalunya. Doctorat en Enginyeria de Processos Químics, Universitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management, Randazzo, Serena, Vicari, Fabrizio, López Rodríguez, Julio, Salem, Mohamed, Lo Brutto, Rita, Azzouz, S., Chamam, S., Cataldo, Salvatore, Muratore, Nicola, Fernández de Labastida Ventura, Marcos, Vallés Nebot, Víctor, Pettignano, Alberto, D'alì Staiti, Giacomo, Pawlowski, Sylwin, Hannachi, Ahmed, Cortina Pallás, José Luis, and Cipollina, Andrea

Abstract

Mineral extraction from seawater brines has emerged as a viable solution to reduce Europe's reliance on imported Critical Raw Materials (CRM). However, the economic viability of this approach hinges on the local demand for sodium chloride, the primary product of such extraction processes. This study investigates the potential of residual brines, commonly known as "bitterns," generated during solar sea-salt extraction in traditional saltworks, as an alternative source of minerals. The Mediterranean region, encompassing South-European, North-African, Near East coasts, and parts of the Atlantic regions, is particularly conducive to exploring this prospect due to its extensive solar sea salt industry. Saltworks in the region, adopting various operational strategies based on feed quality or local climate conditions, produce different types of bitterns, each holding a latent resource potential that has remained largely unexplored. Within the framework of the EU-funded SEArcularMINE project, it was conducted an extensive analytical campaign to characterize bitterns collected from a diverse saltworks network. The analysis revealed the presence of sodium, potassium, magnesium, chloride, sulfate, and bromide in concentrations ranging from g/kg, while boron, calcium, lithium, rubidium, and strontium were found in the mg/kg range. Additionally, trace elements (TEs) such as cobalt, cesium, gallium, and germanium were detected at concentrations in the order of µg/kg. Detailed results on the composition of bitterns are presented, emphasizing the distinct characteristics observed at different sites. The estimated potential for mineral recovery from these bitterns is approximately 190 €/m3, considering the production capacity of about 9 Mm3 per year in the Mediterranean area. This finding underscores the significant contribution that mineral recovery from bitterns could make in securing access to CRMs for the European Union., Peer Reviewed, Postprint (published version)

Published
2024

13. Estimated GFR and the Effect of Intensive Blood Pressure Lowering After Acute Intracerebral Hemorrhage

Author

Anderson, C.S., Chalmers, J., Arima, H., Davis, S., Heeley, E., Huang, Y., Lavados, P., Neal, B., Parsons, M.W., Lindley, R., Morgenstern, L., Robinson, T., Stapf, C., Tzourio, C., Wang, J.G., Chen, S., Chen, X.Y., Cui, L., Liu, Z., Lu, C., Wang, J., Wu, S., Xu, E., Yang, Q., Zhang, C., Zhang, J., Beer, R., Schmutzhard, E., Redondo, P., Kaste, M., Soinne, L., Tatlisumak, T., Wartenberg, K., Ricci, S., Klijn, K., Azevedo, E., Chamorro, A., Arnold, M., Fischer, U., Kaul, S., Pandian, J., Boyini, H., Singh, S., Rabinstein, A.A., Estol, C., Silva, G., Olavarria, V.V., Robinson, T.G., Simes, R.J., Bousser, M.-G., Hankey, G., Jamrozik, K., Johnston, S.C., Li, S., Bailey, K., Cheung, T., Delcourt, C., Chintapatla, S., Ducasse, E., Erho, T., Hata, J., Holder, B., Knight, E., Leroux, M., Sassé, T., Odgers, E., Walsh, R., Wolfowicz, Z., Chen, G., Fuentes, S., Peng, B., Schneble, H.-M., Wang, M.-X., Billot, L., Heritier, S., Li, Q., Woodward, M., Abimbola, S., Anderson, S., Chan, E., Cheng, G., Chmielnik, P., Leighton, S., Liu, J.-Y., Rasmussen, B., Saxena, A., Tripathy, S., Armenis, M., Baig, M.A., Naidu, B., Starzec, G., Steley, S., Moles, A., Ruiz, A., Zimmermann, M., Marinho, J., Alves, S., Angelim, R., Araujo, J., Kawakami, L., Bustos, C., Gonzalez, F., Munoz Venturelli, P., Chen, X., Jia, R., Li, N., Qu, S., Shu, Y., Song, A., Sun, J., Xiao, J., Zhao, Y., Huang, Q., Vicaut, E., Chamam, A., Viaud, M.-C., Dert, C., Fiedler, U., Jovis, V., Kabla, S., Marchand, S., Pena, A., Rochaud, V., Mallikarjuna, K., Hasan, N., Berge, E., Sandset, E.C., Forårsveen, A.S., Richardson, D., Kumar, T., Lewin, S., Poulter, N., Field, J., Anjum, A., Wilson, A., Perelmuter, H., Agarie, A.M., Barboza, A.G., Recchia, L.A., Miranda, I.F., Rauek, S.G., Duplessis, R.J., Dewey, H., Walker, L., Petrolo, S., Bladin, C., Sturm, J., Crimmins, D., Griffiths, D., Schutz, A., Zenteno, V., Miteff, F., Spratt, N., Kerr, E., Levi, C.R., Phan, T.G., Ma, H., Sanders, L., Moran, C., Wong, K., Read, S., Henderson, R., Wong, A., Hull, R., Skinner, G., Hand, P., Yan, B., Tu, H., Campbell, B., Blacker, D.J., Wijeratne, T., Pathirage, M., Jasinararchchi, M., Matkovic, Z., Celestino, S., Gruber, F., Vosko, M.R., Diabl, E., Rathmaier, S., Pfausler, B., Helbok, R., Fazekas, F., Fischer, R., Poltrum, B., Zechner, B., Trummer, U., Rutgers, M.P., Peeters, A., Dusart, A., Duray, M.-C., Parmentier, C., Ferrao-Santos, S., Brouns, R., De Raedt, S., De Smedt, A., VanHooff, R.-J., De Keyser, J., Martins, S.C.O., de Almeida, A.G., Broudani, R., Titton, N.F., de Freitas, G.R., Cardoso, F.M., Giesel, L.M., Lima, N.A., Jr, Ferraz de Almeida, A.C., Gomes, R.B., Borges dos Santos, T.S., Veloso Soares, E.M., Neto, O.L.A., Silva, G.S., Gomes, D.L., de Carvalho, F.A., Miranda, M., Marques, A., Zétola, V.F., de Matia, G., Lange, M.C., Montes, J., Reccius, A., Soto, A., Rivas, R., Klapp, C., Illanes, S., Aguilera, C., Castro, A., Figueroa, C., Benavides, J., Salamanca, P., Concha, M.C., Pajarito, J., Araya, P., Guerra, F., Li, Y., Liu, G., Wang, B., Chong, Y., He, M., Wang, L., Liu, J., Zhang, X., Lai, C., Jiang, H., Cui, S., Tao, Q., Zhang, Y., Yao, S., Xu, M., Xiao, H., Hu, J., Tang, J., Ji, H., Jiang, M., Yu, F., Yang, X., Guo, X., Wang, Y., Wu, L., Gao, Y., Sun, D., Huang, X., Liu, L., Li, P., Jiang, Y., Li, H., Lu, H., Zhou, J., Yuan, C., Qi, X., Qiu, F., Qian, H., Wang, W., Sun, W., Li, F., Liu, R., Peng, Q., Ren, Z., Fan, C., Wang, H., Wang, T., Shi, F., Duan, C., Chen, Z., Tan, X., Zhao, Z., Chen, J., Han, T., Zhang, L., Hu, Q., Hou, Q., Zhao, X., Zeng, G., Ma, L., Wang, F., Zeng, L., Guo, Z., Fu, Y., Song, Y., Tai, L., Liu, X., Su, X., Yang, Y., Dong, R., Xu, Y., Tian, S., Cheng, S., Su, L., Xie, X., Xu, T., Geng, D., Yan, X., Fan, H., Zhao, N., Wang, S., Yang, J., Yan, M., Li, L., Li, Z., Xu, X., Lian, Y., Sun, H., Liu, D., Wang, N., Tang, Q., Han, Z., Feng, L., Cui, Y., Tian, J., Chang, H., Sun, X., Liu, C., Wen, Z., Lin, Q., Sun, L., Hu, B., Zou, M., Bao, Q., Lin, X., Zhao, L., Tian, X., Wang, X., Li, X., Hao, L., Duan, Y., Wang, R., Wei, Z., Ren, S., Ren, H., Dong, Y., Cheng, Y., Liu, W., Han, J., Zhang, Z., Zhu, J., Qian, J., Sun, Y., Liu, K., Long, F., Peng, X., Zhang, Q., Yuan, Z., Wang, C., Huang, M., He, P., You, Y., Xia, J., Zhou, L., Hou, Y., Qi, Y., Mei, L., Lu, R., Ping, L., Zhou, S., Zhang, S., Zou, R., Guo, J., Li, M., Wei, W., Curtze, S., Saarela, M., Strbian, D., Scheperjans, F., De Broucker, T., Henry, C., Cumurciuc, R., Ibos-Augé, N., Zéghoudi, A.-C., Pico, F., Dereeper, O., Simian, M.-C., Boisselier, C., Mahfoud, A., Timsit, S., Merrien, F.M., Guillon, B., Sevin, M., Herisson, F., Magne, C., Ameri, A., Cret, C., Stefanizzi, S., Klapzcynski, F., Denier, C., Sarov-Riviere, M., Reiner, P., Mawet, J., Hervé, D., Buffon, F., Touzé, E., Domigo, V., Lamy, C., Calvet, D., Pasquini, M., Alamowitch, S., Favrole, P., Muresan, I.-P., Crozier, S., Rosso, C., Pires, C., Leger, A., Deltour, S., Cordonnier, C., Henon, H., Rossi, C., Zuber, M., Bruandet, M., Tamazyan, R., Join-Lambert, C., Juettler, E., Krause, T., Maul, S., Endres, M., Jungehulsing, G.J., Hennerici, M., Griebe, M., Sauer, T., Knoll, K., Huber, R., Knauer, K., Knauer, C., Raubold, S., Schneider, H., Hentschel, H., Lautenschläger, C., Schimmel, E., Dzialowski, I., Foerch, C., Lorenz, M., Singer, O., Meyer dos Santos, I.M.R., Hartmann, A., Hamann, A., Schacht, A., Schrader, B., Teíchmann, A., Wartenberg, K.E., Mueller, T.J., Jander, S., Gliem, M., Boettcher, C., Rosenkranz, M., Beck, C., Otto, D., Thomalla, G., Cheng, B., Wong, K.S., Leung, T.W., Soo, Y.O.Y., Prabhakar, S., Kesavarapu, S.R., Gajjela, P.K., Chenna, R.R., Ummer, K., Basheer, M., Andipet, A., Jagarlapudi, M.K.M., Mohammed, A.U.R., Pawar, V.G., Eranki, S.S.K., Singh, Y., Akhtar, N., Borah, N.C., Ghose, M., Choudhury, N., Ichaporia, N.R., Shendge, J., Khese, S., Pamidimukkala, V., Inbamuthaiah, P., Nuthakki, S.R., Tagallamudi, N.M.R., Gutti, A.K., Khurana, D., Kesavarapu, P., Jogi, V., Garg, A., Samanta, D., Sarma, G.R.K., Nadig, R., Mathew, T., Anandan, M.A., Caterbi, E., Zini, A., Cavazzuti, M., Casoni, F., Pentore, R., Falzone, F., Mazzoli, T., Greco, L.M., Menichetti, C., Coppola, F., Cenciarelli, S., Gallinella, E., Mattioni, A., Condurso, R., Sicilia, I., Zampolini, M., Corea, F., Barbi, M., Proietti, C., Toni, D., Pieroni, A., Anzini, A., Falcou, A., Demichele, M., Klijn, C.J.M., Tveiten, A., Thortveit, E.T., Pettersen, S., Holand, N., Hitland, B., Johnsen, S.H., Eltoft, A., Wasay, M., Kamal, A., Iqrar, A., Ali, L., Begum, D., Gama, G., Fonseca, L., Moreira, G., Veloso, L.M., Pinheiro, D., Paredes, L., Rozeira, C., Gregorio, T., Segura Martin, T., Ayo, O., Garcia-Garcia, J., Feria Vilar, I., Gómez Fernández, I., Amaro, S., Urra, X., Obach, V., Cervera, A., Silva, Y., Serena, J., Castellanos, M., Terceno, M., Van Eendenburg, C., Weck, A., Findling, O., Lüdi, R., Warburton, E.A., Day, D., Butler, N., Bumanlag, E., Caine, S., Steele, A., Osborn, M., Dodd, E., Murphy, P., Esisi, B., Brown, E., Hayman, R., Baliga, V.K.V., Minphone, M., Kennedy, J., Reckless, I., Pope, G., Teal, R., Michael, K., Manawadu, D., Kalra, L., Lewis, R., Mistry, B., Cattermole, E., Hassan, A., Mandizvidza, L., Bamford, J., Brooks, H., Bedford, C., Whiting, R., Baines, P., Hussain, M., Harvey, M., Fotherby, K., McBride, S., Bourke, P., Morgan, D., Jennings-Preece, K., Price, C., Huntley, S., Riddell, V.E., Storey, G., Lakey, R.L., Subramanian, G., Jenkinson, D., Kwan, J., David, O., Tiwari, D., James, M., Keenan, S., Eastwood, H., Shaw, L., Kaye, P., Button, D., Madigan, B., Williamson, D., Dixit, A., Davis, J., Hossain, M.O., Ford, G.A., Parry-Jones, A., O'Loughlin, V., Jarapa, R., Naing, Z., Lovelock, C., O'Reilly, J., Khan, U., Bhalla, A., Rudd, A., Birns, J., Werring, D.J., Law, R., Perry, R., Jones, I., Erande, R., Roffe, C., Natarajan, I., Ahmad, N., Finney, K., Lucas, J., Mistri, A., Eveson, D., Marsh, R., Haunton, V., Fugate, J.E., Lepore, S.W., Zheng, Danni, Sato, Shoichiro, Arima, Hisatomi, Heeley, Emma, Delcourt, Candice, Cao, Yongjun, Chalmers, John, and Anderson, Craig S.

Published
2016
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19. Potentials for critical raw materials recovery from Mediterranean saltworks bitterns

Author

S. Randazzo, F. Vicari, J. López, M. Salem. D. Baaklini, S. Pawlowski, S. Karayilan, R. Cucchiara, R. Lo Brutto, S. Azzouz, S. Chamam, S. Cataldo, N. Muratore, M. Fernández de Labastida, V. Vallès, H. M. Saif, G. Micale, A. Tamburini, E. Kucuk, A. Pettignano, G. D’Alì Staiti, D. Pastorelli, J. G. Crespo, A. Hannachi, J. L. Cortina, A. Cipollina, and S. Randazzo, F. Vicari, J. López, M. Salem. D. Baaklini, S. Pawlowski, S. Karayilan, R. Cucchiara, R. Lo Brutto, S. Azzouz, S. Chamam, S. Cataldo, N. Muratore, M. Fernández de Labastida, V. Vallès, H.M. Saif, G. Micale, A. Tamburini, E. Kucuk, A. Pettignano, G. D’Alì Staiti, D. Pastorelli, J.G. Crespo, A. Hannachi, J. L. Cortina, A. Cipollina

Subjects
Bittern, Minerals recovery, Critical Raw Material, Saltwork, Analytical tecnique
Abstract

Minerals extraction from seawater brines is currently regarded as the most practical approach to reduce European dependency from the import of many Critical Raw Materials. The technical feasibility of such approach has been widely demonstrated in several different research and development projects but the economic sustainability has always been found to depend on the local demand for sodium chloride, which is always the most abundant product of the extraction. Starting from this crucial node, the SEArcularMINE project has investigated the possibility to use the residual brines originated by sea-salt extraction in traditional saltworks, regarded as an already well-established marketplace. The Mediterranean area as a whole, can rely on a diffused industry including South-European coast, North-African and Close East coast and portions of the Atlantic regions. Additionally, many inland salt-lakes and subsoil waters are traditionally operated in the same way as the coastal facilities to produce solar-salt. Interestingly, each saltworks have a slightly different approach, adapted to feed quality or local climate conditions. Accordingly, different types of brine are produced, having unique features. These “bitterns” are extremely interesting to characterize, focusing on their hidden potential. In this work, an extensive analytical campaign has been conducted exploiting the wide saltworks network established within the SEArcularMINE project. Main results are here reported, highlighting the possibility of contributing to secure the access to some Critical Raw Materials for EU

Published
2022

25. Robust Magnetic γ-Fe2O3/Al–ZnO Adsorbent for Chlorpyriphos Removal in Water

Author

Miryam Boulares, Baha Chamam, Amal Mejri, Mohamed Ali Wahab, Amani Haddouk, Lassaad El Mir, Ahmed Hichem Hamzaoui, Amjad Kallel, Chedly Tizaoui, and Ismail Trabelsi

Subjects
nanocomposites, magnetic adsorption, chlorpyriphos, pesticides, isotherm and kinetic, Geography, Planning and Development, Aquatic Science, Biochemistry, Water Science and Technology
Abstract

In this research, the removal of the pesticide chlorpyriphos (CPE) from water by adsorption using a novel adsorbent made of γ-Fe2O3/Al-ZnO nanocomposite was studied. The adsorbent was characterized using Fourier-transformed infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) surface area, and vibrating sample magnetometry (VSM). The main parameters affecting the adsorption process, including the initial pH (2–12), the concentration of pesticide (10–70 ppm), the %Fe2O3 of the adsorbent, and the adsorption time (≤60 min), were studied. The results demonstrated that the adsorption of CPE depended on the pH, with a maximum removal of 92.3% achieved at around neutral pH. The adsorption isotherm was modelled and the results showed that the Freundlich model fitted the experimental data better than the Langmuir and Temkin models. The kinetics of adsorption were also studied and modelled using the pseudo-first-order and pseudo-second-order models, with the former being found more suitable. Energy dispersive X-ray (EDX) analysis confirmed the adsorption of CPE on γ-Fe2O3/Al-ZnO, while FTIR analysis suggested that the hydroxyl, N-pyridine, and chloro functional groups governed the adsorption mechanism. Furthermore, VSM analysis revealed that the magnetization saturation of γ-Fe2O3/Al-ZnO nanocomposite, after CPE adsorption, was slightly lower than that of fresh γ-Fe2O3/Al-ZnO but remained adequate for the efficient separation of the adsorbent simply using a magnet. This study demonstrates that binary γ-Fe2O3/Al-ZnO magnetic nanocomposites are effective for the removal of chlorpyriphos and could be highly promising materials for the removal of emerging pollutants in wastewater.

Published
2022
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31. Novel polyvinylidene fluoride/lead-doped zinc oxide adsorptive membranes for enhancement of the removal of reactive textile dye

Author

J. P. Méricq, B. Chamam, Marc Heran, L. El Mir, Ismail Trabelsi, Catherine Faur, R. Ben Dassi, Université de Carthage - University of Carthage, Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM), and University of Gabes

Subjects
Environmental Engineering, Materials science, Scanning electron microscope, chemistry.chemical_element, Nanoparticle, Sorption, Zinc, 010501 environmental sciences, 01 natural sciences, Polyvinylidene fluoride, Contact angle, chemistry.chemical_compound, Membrane, Adsorption, chemistry, Chemical engineering, Environmental Chemistry, [CHIM]Chemical Sciences, General Agricultural and Biological Sciences, 0105 earth and related environmental sciences
Abstract

International audience; Novel hybrid polyvinylidene fluoride/lead-doped zinc oxide nanoparticles ultrafiltration membranes were successfully fabricated for the removal of Reactive Black 5 textile dye. The matrix membranes embedded with various weights of nanoparticles (5, 10 and 20 wt% of polyvinylidene fluoride) prepared by non-solvent induced phase separation wet process method. The membranes’ morphology structure, surface, chemical composition and hydrophilicity were characterized by scanning electron microscope, energy-dispersive X-ray spectrometer analysis and water contact angle. The performances in terms of permeability, porosity, permeate flux and capacities of Reactive Black 5 textile dye retention were evaluated. Whereas the addition of low concentration of lead-doped zinc oxide nanoparticles doesn’t significantly modify polyvinylidene fluoride membranes structure and performance, the addition of 20 wt% of nanoparticles to casting solution modified the morphology, led to reduce the contact angle from 77° to 67° and enhanced the hydrophilicity of membranes. Static sorption and dynamic filtration were performed to evaluate the capacity of membrane to remove the Reactive Black 5 dye. Results showed the polyvinylidene fluoride/lead-doped zinc oxide composite membranes exhibit high efficiency in the adsorption and retention of Reactive Black 5 textile dye in comparison with polyvinylidene fluoride neat. The addition of 20 wt % of nanoparticles in membrane matrix showed high color removal rate (98%) and high adsorption properties in comparison with pure polyvinylidene fluoride membrane. With simple water cleaning, without addition of any chemical agent, the membranes recovered high performance.

Published
2021
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32. A distributed energy-efficient clustering protocol for wireless sensor networks

Author

Chamam, Ali and Pierre, Samuel

Subjects
Energy management systems -- Energy use, Sensors -- Energy use, Algorithms, Computer network protocols, Algorithm, Protocol, Computers, Electronics, Engineering and manufacturing industries
Abstract

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.compeleceng.2009.03.008 Byline: Ali Chamam, Samuel Pierre Keywords: Wireless sensor networks; Clustering; Network lifetime; Distributed; Energy efficiency Abstract: Minimizing energy dissipation and maximizing network lifetime are among the central concerns when designing applications and protocols for sensor networks. Clustering has been proven to be energy-efficient in sensor networks since data routing and relaying are only operated by cluster heads. Besides, cluster heads can process, filter and aggregate data sent by cluster members, thus reducing network load and alleviating the bandwidth. In this paper, we propose a novel distributed clustering algorithm where cluster heads are elected following a three-way message exchange between each sensor and its neighbors. Sensor's eligibility to be elected cluster head is based on its residual energy and its degree. Our protocol has a message exchange complexity of O(1) and a worst-case convergence time complexity of O(N). Simulations show that our algorithm outperforms EESH, one of the most recently published distributed clustering algorithms, in terms of network lifetime and ratio of elected cluster heads. Author Affiliation: Department of Computer Engineering, Ecole Polytechnique of Montreal, C.P. 6079, succ. Centre-Ville, Montreal (QC), Canada H3C 3A7

Published
2010

33. Pb doped ZnO nanoparticles for the sorption of Reactive Black 5 textile azo dye

Author

Chedly Tizaoui, Jean Pierre Méricq, Baha Chamam, Roua Ben Dassi, Marc Heran, Ismail Trabelsi, Catherine Faur, Lassaad El Mir, Université de Carthage - University of Carthage, Centre de Recherche et Technologies des Eaux (CERTE), Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM), University of Gabes, and Swansea University

Subjects
Environmental Engineering, Materials science, Central composite design, Scanning electron microscope, Nanoparticle, 02 engineering and technology, 010501 environmental sciences, 01 natural sciences, symbols.namesake, Adsorption, Naphthalenesulfonates, Spectroscopy, Fourier Transform Infrared, lead doped zinc oxide, [CHIM]Chemical Sciences, Fourier transform infrared spectroscopy, 0105 earth and related environmental sciences, Water Science and Technology, Aqueous solution, sorption, Textiles, Langmuir adsorption model, Sorption, Hydrogen-Ion Concentration, 021001 nanoscience & nanotechnology, Kinetics, color removal, Lead, symbols, nanoparticles, Zinc Oxide, Reactive Black 5, 0210 nano-technology, Azo Compounds, Water Pollutants, Chemical, Nuclear chemistry
Abstract

In this study, Pb doped ZnO nanoparticles were synthesized by a sol-gel technique for the sorption of Reactive Black 5 (RB5) textile dye in aqueous solution. The ZnO:Pb (2 and 4%) nanoparticles have been characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy and cryogenic nitrogen adsorption method. The average size of the synthesized nanoparticles was less than 100 nm and the surface areas were 18.8 and 20.8 m2/g, respectively for ZnO:Pb 2% and ZnO:Pb 4%. Batch sorption experiments were performed for color removal of RB5 dye at ambient temperature and 30 mg/L dye concentration. The central composite design with response surface methodology was used to study the effect of sorption condition (pH, nanoparticles dose and contact time). The significance of independent variables and their interactions was tested by analysis of variance. The optimum conditions of color removal were pH = 7, 2 g/L dose of nanoparticles and a contact time of 79 min. The color removal performance was 79.4 and 98.1% for ZnO:Pb 2 and 4% respectively. The pseudo-second-order model described well the removal rates while the Langmuir model fitted well the adsorption isotherms.

Published
2020
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35. Alkyne hydrogenation over Pd catalysts: A new paradigm

Author

Teschner, Detre, Vass, Elaine, Hävecker, Michael, Zafeiratos, Spiros, Schnörch, Péter, Sauer, Hermann, Knop-Gericke, Axel, Schlögl, Robert, Chamam, Mounir, Wootsch, Attila, Canning, Arran S., Gamman, Jonathan J., Jackson, S. David, McGregor, James, and Gladden, Lynn F.

Published
2006
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38. Intricacies of Cation–Anion Combinations in Imidazolium Salt-Catalyzed Cycloaddition of CO2 Into Epoxides

Author

Gábor Laurenczy, Martin Hulla, Felix D. Bobbink, Sergey A. Katsyuba, Paul J. Dyson, Florent Menoud, Sami Manoubi Armand Chamam, and Dmitry V. Vasilyev

Subjects
Green chemistry, chemistry.chemical_classification, 010405 organic chemistry, Chemistry, Halide, Salt (chemistry), General Chemistry, 010402 general chemistry, 01 natural sciences, Chloride, Medicinal chemistry, Catalysis, Cycloaddition, 0104 chemical sciences, chemistry.chemical_compound, Nucleophile, Ionic liquid, medicine, medicine.drug
Abstract

The cycloaddition of CO2 into epoxides catalyzed by imidazolium and related salts continues to attract attention due to the industrial importance of the cyclic carbonate products. The mechanism of the imidazolium-catalyzed transformation has been proposed to require the participation of the acidic C2 proton. However, other simple salts without acidic protons, such as N,N,N,N-tetrabutylammonium chloride, are also efficient catalysts for the reaction. Hence, we decided to investigate the role of the ring protons of imidazolium salts in this reaction. To this end, we systematically studied the catalytic activity of a series of methyl-substituted imidazolium cations, in the presence of various halide anions, both by experiment and in silico. Our results demonstrate that, while stabilization of intermediates by C2, C4, or C5 protons in imidazolium salts takes place, it is the nucleophilicity of the anion that governs the overall activity, which is intimately related to the strength of the interactions between ...

Published
2018
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39. Delineating the Mechanism of Ionic Liquids in the Synthesis of Quinazoline-2,4(1H ,3H )-dione from 2-Aminobenzonitrile and CO2

Author

Gábor Laurenczy, Martin Hulla, Sami Manoubi Armand Chamam, Shoubhik Das, and Paul J. Dyson

Subjects
Green chemistry, 010405 organic chemistry, ved/biology, ved/biology.organism_classification_rank.species, General Medicine, General Chemistry, 010402 general chemistry, 01 natural sciences, Medicinal chemistry, Catalysis, 0104 chemical sciences, Reaction rate, Chemistry, chemistry.chemical_compound, Deprotonation, chemistry, Organocatalysis, Ionic liquid, Quinazoline, Organic chemistry, Conjugate acid
Abstract

Ionic liquids (ILs) are versatile solvents and catalysts for the synthesis of quinazoline-2,4-dione from 2-aminobenzonitrile and CO2. However, the role of the IL in this reaction is poorly understood. Consequently, we investigated this reaction and showed that the IL cation does not play a significant role in the activation of the substrates, and instead plays a secondary role in controlling the physical properties of the IL. A linear relationship between the pK(a) of the IL anion (conjugate acid) and the reaction rate was identified Tvith maximum catalyst efficiency observed at a pK(a) of > 14.7 in DMSO. The base-catalyzed reaction is limited by the acidity of the quinazoline-2,4-dione product, which is deprotonated by more basic catalysts:, leading to the formation of the quinazotide anion (conjugate acid pK(a) 14.7). Neutralization of the original catalyst and formation of the quinazolide anion catalyst leads to the observed reaction limit.

Published
2017
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41. Robust Magnetic γ-Fe 2 O 3 /Al–ZnO Adsorbent for Chlorpyriphos Removal in Water.

Author

Boulares, Miryam, Chamam, Baha, Mejri, Amal, Wahab, Mohamed Ali, Haddouk, Amani, El Mir, Lassaad, Hamzaoui, Ahmed Hichem, Kallel, Amjad, Tizaoui, Chedly, and Trabelsi, Ismail

Subjects
ARSENIC removal (Water purification), ADSORPTION isotherms, ADSORPTION kinetics, SCANNING electron microscopy, INFRARED spectroscopy
Abstract

In this research, the removal of the pesticide chlorpyriphos (CPE) from water by adsorption using a novel adsorbent made of γ-Fe2O3/Al-ZnO nanocomposite was studied. The adsorbent was characterized using Fourier-transformed infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) surface area, and vibrating sample magnetometry (VSM). The main parameters affecting the adsorption process, including the initial pH (2–12), the concentration of pesticide (10–70 ppm), the %Fe2O3 of the adsorbent, and the adsorption time (≤60 min), were studied. The results demonstrated that the adsorption of CPE depended on the pH, with a maximum removal of 92.3% achieved at around neutral pH. The adsorption isotherm was modelled and the results showed that the Freundlich model fitted the experimental data better than the Langmuir and Temkin models. The kinetics of adsorption were also studied and modelled using the pseudo-first-order and pseudo-second-order models, with the former being found more suitable. Energy dispersive X-ray (EDX) analysis confirmed the adsorption of CPE on γ-Fe2O3/Al-ZnO, while FTIR analysis suggested that the hydroxyl, N-pyridine, and chloro functional groups governed the adsorption mechanism. Furthermore, VSM analysis revealed that the magnetization saturation of γ-Fe2O3/Al-ZnO nanocomposite, after CPE adsorption, was slightly lower than that of fresh γ-Fe2O3/Al-ZnO but remained adequate for the efficient separation of the adsorbent simply using a magnet. This study demonstrates that binary γ-Fe2O3/Al-ZnO magnetic nanocomposites are effective for the removal of chlorpyriphos and could be highly promising materials for the removal of emerging pollutants in wastewater. [ABSTRACT FROM AUTHOR]

Published
2022
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43. Comparative Performances of an Activated Sludge Process and a Membrane Bioreactor for the Treatment of a Textile Industry Effluent

Author

A. Grasmick, B. Chamam, Heran M, and R. B. Amar

Subjects
Suspended solids, Textile industry, Chemistry, business.industry, 02 engineering and technology, 010501 environmental sciences, 021001 nanoscience & nanotechnology, Membrane bioreactor, Pulp and paper industry, 01 natural sciences, Mixed liquor suspended solids, Activated sludge, Chemical engineering, Sewage treatment, Turbidity, 0210 nano-technology, business, Effluent, 0105 earth and related environmental sciences
Abstract

The aim of our work is to compare the performances and the quality of treated water of a Tunisian textile industry through a conventional activated sludge (CAS) and a membrane bioreactor (MBR). During the first period, CAS and MBR1 worked under similar biological conditions (MLSS of 4-6 g.L-1). MBR showed a better global efficiency. Permeate of MBR was always free from TSS and turbidity whereas CAS treated water contained TSS and turbidity varying respectively between 0 and 0.13 g.L-1 and 10 and 20 NTU. If colour and soluble COD removal efficiency was closed (95% and 97%), it appeared necessary to add coagulant in the CAS to insure an adequate sludge settling and complete the colour removal. During the second period, the sludge retention time was increased in the MBR2 in order to reach 8-10 g.L-1 of suspended solids. The COD effluent value was further reduced (MBR2: 50 mg.L-1, MBR1 150 mg.L-1 and CAS 180 mg.L-1). The SRT allows a reduction of 20% of the sludge production but this effect was counterbalance by rheological sludge properties. Furthermore, the MBR has shown great aptitude to withstand high loading rate variations and to product a constant quality effluent.

Published
2017
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44. Pb-Zn (Ba) deposits of the oriental Saharan Atlas (north-east of Algeria): distribution, control and implications for mining exploration

Author

Boutaleb Abdelhak, Ysbaa Saadia, Haddouche Omar, Chamam Madjid, Boubaya Djamel, and Hammouche Hanafi

Subjects
geography, Mineralization (geology), geography.geographical_feature_category, 010504 meteorology & atmospheric sciences, Lineament, Atlas (topology), Trough (geology), Geochemistry, Sedimentary basin, 010502 geochemistry & geophysics, Spatial distribution, 01 natural sciences, Tectonics, Mineral exploration, General Earth and Planetary Sciences, Geomorphology, Geology, 0105 earth and related environmental sciences, General Environmental Science
Abstract

Analysis and integration of geological/metallogenic data and digitally processed gravimetric/aeromagnetic data to the oriental Saharan Atlas domain were carried out to understand the spatial distribution and structural control on Pb-Zn (Ba) deposits of the oriental Saharan Atlas. The use of this combined technique suggests that most of mineral deposits appear to be regionally controlled by structural trends (subparallel NE-SW-trending) along margins of subsiding sedimentary basins. Mineralization occurs along or near major NE-SW-trending faults, locally intersected by NW-SE-trending faults. In addition, mineral deposits are usually either inside anticlinal hinge zones (example, Merouana, Ichmoul and Ain Mimoum ore deposits) or on the flanks of anticlinal structures (example, Ain Bougda ore deposit). In “diapiric zone”, mineral deposits are generally located on diapiric structures borders (peridiapiric concentrations), related to NE-SW/NE-SW and E-W-trending faults. Other mineral concentrations occurs along the margins of tectonic troughs zones (example, Morsott trough) resulting probably by NW-SE-trending deep faults movement. In summary, our research suggested that regional parameters, such as NE-SW/NW-SE-trending lineaments, intersections of these lineament zones and margins of subsiding sedimentary basins/diapiric structures, serve as significant indicators and provides a valuable framework for guiding the early stages of Pb-Zn (Ba) mineral exploration; other considerations must then be applied in this region, like integration of surficial geochemical anomalies that allows better delineation of targets for further mineral exploration.

Published
2016
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45. On the Planning of Wireless Sensor Networks: Energy-Efficient Clustering under the Joint Routing and Coverage Constraint

Author

A. Chamam and Samuel Pierre

Subjects
Mathematical optimization, Spanning tree, Computer Networks and Communications, Wireless network, Computer science, Heuristic, Distributed computing, Energy consumption, Network topology, Key distribution in wireless sensor networks, Sensor array, Mobile wireless sensor network, Electrical and Electronic Engineering, Cluster analysis, Wireless sensor network, Integer programming, Software, Efficient energy use
Abstract

Minimizing energy dissipation and maximizing network lifetime are important issues in the design of applications and protocols for sensor networks. Energy-efficient sensor state planning consists in finding an optimal assignment of states to sensors in order to maximize network lifetime. For example, in area surveillance applications, only an optimal subset of sensors that fully covers the monitored area can be switched on while the other sensors are turned off. In this paper, we address the optimal planning of sensors' states in cluster-based sensor networks. Typically, any sensor can be turned on, turned off, or promoted cluster head, and a different power consumption level is associated with each of these states. We seek an energy-optimal topology that maximizes network lifetime while ensuring simultaneously full area coverage and sensor connectivity to cluster heads, which are constrained to form a spanning tree used as a routing topology. First, we formulate this problem as an Integer Linear Programming model that we prove NP-Complete. Then, we implement a Tabu search heuristic to tackle the exponentially increasing computation time of the exact resolution. Experimental results show that the proposed heuristic provides near-optimal network lifetime values within low computation times, which is, in practice, suitable for large-sized sensor networks.

Published
2009
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48. Methylcyclopentane transformation on Ge–Rh bimetallic catalysts prepared by organometallic grafting

Author

Zoltán Paál, Attila Wootsch, Laurence Pirault-Roy, Irina Boghian, and Mounir Chamam

Subjects
Process Chemistry and Technology, Catalytic test, chemistry.chemical_element, General Chemistry, Photochemistry, Catalysis, Rhodium, chemistry.chemical_compound, chemistry, Desorption, Monolayer, Selectivity, Bimetallic strip, Methylcyclopentane, Nuclear chemistry
Abstract

Ge–Rh/Al2O3 catalysts were prepared by organometallic grafting, with nominal Ge loadings of 1/8, 1/4, 1/2 and 1 monolayer and actual loading of 300, 600, 2000 and 2100 ppm. The dispersion decreased proportionally to the Ge loading up to 600 ppm Ge. Methylcyclopentane was used as catalytic test reaction. The selectivity of ring opening was 70–90%. Addition of 300 and 600 ppm Ge divided the contiguous Rh sites to smaller ensembles. Here mostly 2-methylpentane gave C1–C5 fragments, its surface intermediate undergoing fragmentation without desorption, like on Rh with D < 60–70%. More Ge (2000 ppm) divided further Rh and also may have penetrated into subsurface layers. Here all primary ring opening products gave fragments, similarly to small Rh particles.

Published
2007
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49. Estimated GFR and the Effect of Intensive Blood Pressure Lowering After Acute Intracerebral Hemorrhage

Author

Danni Zheng, Shoichiro Sato, Hisatomi Arima, Emma Heeley, Candice Delcourt, Yongjun Cao, John Chalmers, Craig S. Anderson, C.S. Anderson, J. Chalmers, H. Arima, S. Davis, E. Heeley, Y. Huang, P. Lavados, B. Neal, M.W. Parsons, R. Lindley, L. Morgenstern, T. Robinson, C. Stapf, C. Tzourio, J.G. Wang, S. Chen, X.Y. Chen, L. Cui, Z. Liu, C. Lu, J. Wang, S. Wu, E. Xu, Q. Yang, C. Zhang, J. Zhang, R. Beer, E. Schmutzhard, P. Redondo, M. Kaste, L. Soinne, T. Tatlisumak, K. Wartenberg, S. Ricci, K. Klijn, E. Azevedo, A. Chamorro, M. Arnold, U. Fischer, S. Kaul, J. Pandian, H. Boyini, S. Singh, A.A. Rabinstein, C. Estol, G. Silva, V.V. Olavarria, T.G. Robinson, R.J. Simes, M.-G. Bousser, G. Hankey, K. Jamrozik, S.C. Johnston, S. Li, K. Bailey, T. Cheung, C. Delcourt, S. Chintapatla, E. Ducasse, T. Erho, J. Hata, B. Holder, E. Knight, M. Leroux, T. Sassé, E. Odgers, R. Walsh, Z. Wolfowicz, G. Chen, S. Fuentes, B. Peng, H.-M. Schneble, M.-X. Wang, L. Billot, S. Heritier, Q. Li, M. Woodward, S. Abimbola, S. Anderson, E. Chan, G. Cheng, P. Chmielnik, S. Leighton, J.-Y. Liu, B. Rasmussen, A. Saxena, S. Tripathy, M. Armenis, M.A. Baig, B. Naidu, G. Starzec, S. Steley, A. Moles, A. Ruiz, M. Zimmermann, J. Marinho, S. Alves, R. Angelim, J. Araujo, L. Kawakami, C. Bustos, F. Gonzalez, P. Munoz Venturelli, X. Chen, R. Jia, N. Li, S. Qu, Y. Shu, A. Song, J. Sun, J. Xiao, Y. Zhao, Q. Huang, E. Vicaut, A. Chamam, M.-C. Viaud, C. Dert, U. Fiedler, V. Jovis, S. Kabla, S. Marchand, A. Pena, V. Rochaud, K. Mallikarjuna, N. Hasan, E. Berge, E.C. Sandset, A.S. Forårsveen, D. Richardson, T. Kumar, S. Lewin, N. Poulter, J. Field, A. Anjum, A. Wilson, H. Perelmuter, A.M. Agarie, A.G. Barboza, L.A. Recchia, I.F. Miranda, S.G. Rauek, R.J. Duplessis, H. Dewey, L. Walker, S. Petrolo, C. Bladin, J. Sturm, D. Crimmins, D. Griffiths, A. Schutz, V. Zenteno, F. Miteff, N. Spratt, E. Kerr, C.R. Levi, T.G. Phan, H. Ma, L. Sanders, C. Moran, K. Wong, S. Read, R. Henderson, A. Wong, R. Hull, G. Skinner, P. Hand, B. Yan, H. Tu, B. Campbell, D.J. Blacker, T. Wijeratne, M. Pathirage, M. Jasinararchchi, Z. Matkovic, S. Celestino, F. Gruber, M.R. Vosko, E. Diabl, S. Rathmaier, B. Pfausler, R. Helbok, F. Fazekas, R. Fischer, B. Poltrum, B. Zechner, U. Trummer, M.P. Rutgers, A. Peeters, A. Dusart, M.-C. Duray, C. Parmentier, S. Ferrao-Santos, R. Brouns, S. De Raedt, A. De Smedt, R.-J. VanHooff, J. De Keyser, S.C.O. Martins, A.G. de Almeida, R. Broudani, N.F. Titton, G.R. de Freitas, F.M. Cardoso, L.M. Giesel, N.A. Lima, A.C. Ferraz de Almeida, R.B. Gomes, T.S. Borges dos Santos, E.M. Veloso Soares, O.L.A. Neto, G.S. Silva, D.L. Gomes, F.A. de Carvalho, M. Miranda, A. Marques, V.F. Zétola, G. de Matia, M.C. Lange, J. Montes, A. Reccius, A. Soto, R. Rivas, C. Klapp, S. Illanes, C. Aguilera, A. Castro, C. Figueroa, J. Benavides, P. Salamanca, M.C. Concha, J. Pajarito, P. Araya, F. Guerra, Y. Li, G. Liu, B. Wang, Y. Chong, M. He, L. Wang, J. Liu, X. Zhang, C. Lai, H. Jiang, S. Cui, Q. Tao, Y. Zhang, S. Yao, M. Xu, H. Xiao, J. Hu, J. Tang, H. Ji, M. Jiang, F. Yu, X. Yang, X. Guo, Y. Wang, L. Wu, Y. Gao, D. Sun, X. Huang, L. Liu, P. Li, Y. Jiang, H. Li, H. Lu, J. Zhou, C. Yuan, X. Qi, F. Qiu, H. Qian, W. Wang, W. Sun, F. Li, R. Liu, Q. Peng, Z. Ren, C. Fan, H. Wang, T. Wang, F. Shi, C. Duan, Z. Chen, X. Tan, Z. Zhao, J. Chen, T. Han, L. Zhang, Q. Hu, Q. Hou, X. Zhao, G. Zeng, L. Ma, F. Wang, L. Zeng, Z. Guo, Y. Fu, Y. Song, L. Tai, X. Liu, X. Su, Y. Yang, R. Dong, Y. Xu, S. Tian, S. Cheng, L. Su, X. Xie, T. Xu, D. Geng, X. Yan, H. Fan, N. Zhao, S. Wang, J. Yang, M. Yan, L. Li, Z. Li, X. Xu, Y. Lian, H. Sun, D. Liu, N. Wang, Q. Tang, Z. Han, L. Feng, Y. Cui, J. Tian, H. Chang, X. Sun, C. Liu, Z. Wen, Q. Lin, L. Sun, B. Hu, M. Zou, Q. Bao, X. Lin, L. Zhao, X. Tian, X. Wang, X. Li, L. Hao, Y. Duan, R. Wang, Z. Wei, S. Ren, H. Ren, Y. Dong, Y. Cheng, W. Liu, J. Han, Z. Zhang, J. Zhu, J. Qian, Y. Sun, K. Liu, F. Long, X. Peng, Q. Zhang, Z. Yuan, C. Wang, M. Huang, P. He, Y. You, J. Xia, L. Zhou, Y. Hou, Y. Qi, L. Mei, R. Lu, L. Ping, S. Zhou, S. Zhang, R. Zou, J. Guo, M. Li, W. Wei, S. Curtze, M. Saarela, D. Strbian, F. Scheperjans, T. De Broucker, C. Henry, R. Cumurciuc, N. Ibos-Augé, A.-C. Zéghoudi, F. Pico, O. Dereeper, M.-C. Simian, C. Boisselier, A. Mahfoud, S. Timsit, F.M. Merrien, B. Guillon, M. Sevin, F. Herisson, C. Magne, A. Ameri, C. Cret, S. Stefanizzi, F. Klapzcynski, C. Denier, M. Sarov-Riviere, P. Reiner, J. Mawet, D. Hervé, F. Buffon, E. Touzé, V. Domigo, C. Lamy, D. Calvet, M. Pasquini, S. Alamowitch, P. Favrole, I.-P. Muresan, S. Crozier, C. Rosso, C. Pires, A. Leger, S. Deltour, C. Cordonnier, H. Henon, C. Rossi, M. Zuber, M. Bruandet, R. Tamazyan, C. Join-Lambert, E. Juettler, T. Krause, S. Maul, M. Endres, G.J. Jungehulsing, M. Hennerici, M. Griebe, T. Sauer, K. Knoll, R. Huber, K. Knauer, C. Knauer, S. Raubold, H. Schneider, H. Hentschel, C. Lautenschläger, E. Schimmel, I. Dzialowski, C. Foerch, M. Lorenz, O. Singer, I.M.R. Meyer dos Santos, A. Hartmann, A. Hamann, A. Schacht, B. Schrader, A. Teíchmann, K.E. Wartenberg, T.J. Mueller, S. Jander, M. Gliem, C. Boettcher, M. Rosenkranz, C. Beck, D. Otto, G. Thomalla, B. Cheng, K.S. Wong, T.W. Leung, Y.O.Y. Soo, S. Prabhakar, S.R. Kesavarapu, P.K. Gajjela, R.R. Chenna, K. Ummer, M. Basheer, A. Andipet, M.K.M. Jagarlapudi, A.U.R. Mohammed, V.G. Pawar, S.S.K. Eranki, Y. Singh, N. Akhtar, N.C. Borah, M. Ghose, N. Choudhury, N.R. Ichaporia, J. Shendge, S. Khese, V. Pamidimukkala, P. Inbamuthaiah, S.R. Nuthakki, N.M.R. Tagallamudi, A.K. Gutti, D. Khurana, P. Kesavarapu, V. Jogi, A. Garg, D. Samanta, G.R.K. Sarma, R. Nadig, T. Mathew, M.A. Anandan, E. Caterbi, A. Zini, M. Cavazzuti, F. Casoni, R. Pentore, F. Falzone, T. Mazzoli, L.M. Greco, C. Menichetti, F. Coppola, S. Cenciarelli, E. Gallinella, A. Mattioni, R. Condurso, I. Sicilia, M. Zampolini, F. Corea, M. Barbi, C. Proietti, D. Toni, A. Pieroni, A. Anzini, A. Falcou, M. Demichele, C.J.M. Klijn, A. Tveiten, E.T. Thortveit, S. Pettersen, N. Holand, B. Hitland, S.H. Johnsen, A. Eltoft, M. Wasay, A. Kamal, A. Iqrar, L. Ali, D. Begum, G. Gama, L. Fonseca, G. Moreira, L.M. Veloso, D. Pinheiro, L. Paredes, C. Rozeira, T. Gregorio, T. Segura Martin, O. Ayo, J. Garcia-Garcia, I. Feria Vilar, I. Gómez Fernández, S. Amaro, X. Urra, V. Obach, A. Cervera, Y. Silva, J. Serena, M. Castellanos, M. Terceno, C. Van Eendenburg, A. Weck, O. Findling, R. Lüdi, E.A. Warburton, D. Day, N. Butler, E. Bumanlag, S. Caine, A. Steele, M. Osborn, E. Dodd, P. Murphy, B. Esisi, E. Brown, R. Hayman, V.K.V. Baliga, M. Minphone, J. Kennedy, I. Reckless, G. Pope, R. Teal, K. Michael, D. Manawadu, L. Kalra, R. Lewis, B. Mistry, E. Cattermole, A. Hassan, L. Mandizvidza, J. Bamford, H. Brooks, C. Bedford, R. Whiting, P. Baines, M. Hussain, M. Harvey, K. Fotherby, S. McBride, P. Bourke, D. Morgan, K. Jennings-Preece, C. Price, S. Huntley, V.E. Riddell, G. Storey, R.L. Lakey, G. Subramanian, D. Jenkinson, J. Kwan, O. David, D. Tiwari, M. James, S. Keenan, H. Eastwood, L. Shaw, P. Kaye, D. Button, B. Madigan, D. Williamson, A. Dixit, J. Davis, M.O. Hossain, G.A. Ford, A. Parry-Jones, V. O'Loughlin, R. Jarapa, Z. Naing, C. Lovelock, J. O'Reilly, U. Khan, A. Bhalla, A. Rudd, J. Birns, D.J. Werring, R. Law, R. Perry, I. Jones, R. Erande, C. Roffe, I. Natarajan, N. Ahmad, K. Finney, J. Lucas, A. Mistri, D. Eveson, R. Marsh, V. Haunton, J.E. Fugate, S.W. Lepore, Neurologian yksikkö, Clinicum, Neurology, Clinical sciences, Neuroprotection & Neuromodulation, Supporting clinical sciences, UZB Other, Physical Medicine and Rehabilitation, and Vriendenkring VUB

Subjects
CHRONIC KIDNEY-DISEASE, Male, systolic blood pressure, medicine.medical_treatment, Blood Pressure, 030204 cardiovascular system & hematology, GLOMERULAR-FILTRATION-RATE, 3124 Neurology and psychiatry, RESISTANT HYPERTENSION, 0302 clinical medicine, Modified Rankin Scale, cerebral hemorrhage, cerebrovascular disease, chronic kidney disease (CKD), dialysis, estimated glomerular filtration rate (EGFR), hemodialysis, intensive blood pressure lowering treatment, INTERACT2, intracerebral hemorrhage (ICH), Kidney function, stroke, Stroke, education.field_of_study, OUTCOMES, estimated glomerular filtration rate (eGFR), Antihypertensive Agents/pharmacology, ASSOCIATION, Urology & Nephrology, Middle Aged, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], 3. Good health, PREVALENCE, Nephrology, Acute Disease, Female, Cerebral Hemorrhage/drug therapy, WHITE-MATTER, Glomerular Filtration Rate, STROKE PATIENTS, medicine.medical_specialty, RENAL-FUNCTION, LONG-TERM, Population, Renal function, Blood Pressure/drug effects, 03 medical and health sciences, Internal medicine, medicine, Humans, education, Dialysis, Antihypertensive Agents, Aged, Cerebral Hemorrhage, Intracerebral hemorrhage, business.industry, 1103 Clinical Sciences, medicine.disease, Surgery, Blood pressure, business, 030217 neurology & neurosurgery, Kidney disease
Abstract

Markku Kaste ja Filip Scheperjans työryhmän jäsenenä. Background: The kidney-brain interaction has been a topic of growing interest. Past studies of the effect of kidney function on intracerebral hemorrhage (ICH) outcomes have yielded inconsistent findings. Although the second, main phase of the Intensive Blood Pressure Reduction in Acute Cerebral Hemorrhage Trial (INTERACT2) suggests the effectiveness of early intensive blood pressure (BP) lowering in improving functional recovery after ICH, the balance of potential benefits and harms of this treatment in those with decreased kidney function remains uncertain. Study Design: Secondary analysis of INTERACT2, which randomly assigned patients with ICH with elevated systolic BP (SBP) to intensive (target SBP 90, 60-90, and Outcomes: The effect of admission eGFR on the primary outcome of death or major disability at 90 days (defined as modified Rankin Scale scores of 3-6) was analyzed using a multivariable logistic regression model. Potential effect modification of intensive BP lowering treatment by admission eGFR was assessed by interaction terms. Results: Of 2,623 included participants, 912 (35%) and 280 (11%) had mildly and moderately/severely decreased eGFRs, respectively. Patients with moderately/severely decreased eGFRs had the greatest risk for death or major disability at 90 days (adjusted OR, 1.82; 95% CI, 1.28-2.61). Effects of early intensive BP lowering were consistent across different eGFRs (P = 0.5 for homogeneity). Limitations: Generalizability issues arising from a clinical trial population. Conclusions: Decreased eGFR predicts poor outcome in acute ICH. Early intensive BP lowering provides similar treatment effects in patients with ICH with decreased eGFRs. Am J Kidney Dis. 68(1): 94-102. (C) 2016 The Authors. Published by Elsevier Inc. on behalf of the National Kidney Foundation, Inc. This is an open access article under the CC BY-NC-ND license.

Published
2015

50. Advanced treatment of textile wastewater towards reuse using a membrane bioreactor

Author

P. Schoeberl, Rudolf Braun, B. Chamam, M. Brik, and Werner Fuchs

Subjects
Textile, business.industry, Bioengineering, Reuse, Membrane bioreactor, Pulp and paper industry, Applied Microbiology and Biotechnology, Biochemistry, Nutrient, Wastewater, Environmental science, Nanofiltration, Water quality, business, Process engineering, Effluent
Abstract

The aim of this work was to quantify the performance of a membrane bioreactor (MBR) for the treatment of textile wastewater, and to investigate its capability to achieve a water quality meeting reuse criteria. A laboratory-scale MBR unit was fed with textile wastewater originating from a polyester finishing mill. Removal capacity was examined at VLRs ranging between 0.35 and 3.6 g/(l day). In addition, the effect of nutrient addition was studied. COD removal was found to vary between 60 and 95% with reduced COD levels at lower VLRs tested. Nutrient addition slightly enhanced effluent quality. Sludge yield obtained were between 0.01 and 0.1 gMLSS/gCODremoved. At similar sludge loading rates specific sludge production rates were approximately 50% higher when nutrients were added. A distinct relationship between sludge growth and colour removal could be observed. Above an sludge growth rate of 0.3 g/(l day), colour removal was above 87% for all wavelengths examined. If reuse of MBR treated wastewater is intended, additional polishing steps must be considered as MBR effluents did not reach the required quality for water reuse. In order to upgrade MBR effluent, nanofiltration as a post-treatment was suggested.

Published
2006
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