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https://www.readbyqxmd.com/read/28445995/microstructure-of-spark-plasma-sintered-silicon-nitride-ceramics
#1
O A Lukianova, V Yu Novikov, A A Parkhomenko, V V Sirota, V V Krasilnikov
The microstructure and phase composition of the high-content Al2O3-Y2O3-doped spark plasma-sintered silicon nitride were investigated. Fully dense silicon nitride ceramics with a typical α-Si3N4 equiaxed structure with average grain size from 200 to 530 nm, high elastic modulus of 288 GPa, and high hardness of 2038 HV were spark plasma sintered (SPSed) at 1550 °C. Silicon nitride with elongated β-Si3N4 grains, higher hardness of 1800 HV, density of 3.25 g/cm(3), and Young's modulus 300 GPa SPSed at 1650 °C was also reviewed...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28445819/structural-and-spectroscopic-properties-of-complexes-formed-between-hncs-and-so2-in-low-temperature-matrices
#2
Justyna Krupa, Maria Wierzejewska
Matrix isolation FTIR spectroscopy has been combined with quantum chemical calculations in the aim to characterize complexes of isothiocyanic acid HNCS with SO2. The geometries of the 1:1, 1:2 and 2:1 complexes were optimized at the MP2 and DFT (B3LYPD3) levels of theory with the 6-311++G(3df,3pd) basis set. Five different HNCS⋯SO2 structures of the 1:1 stoichiometry were optimized. Three of them involve a weak NH⋯O hydrogen bond whereas two other geometries are stabilized by van der Waals interactions of various types...
April 19, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28445454/body-composition-at-birth-and-its-relationship-with-neonatal-anthropometric-ratios-the-newborn-body-composition-study-of-the-intergrowth-21st-project
#3
José Villar, Fabien A Puglia, Tanis R Fenton, L Cheikh Ismail, Eleonora Staines-Urias, Francesca Giuliani, Eric O Ohuma, Cesar G Victora, Peter Sullivan, Fernando C Barros, Ann Lambert, Aris T Papageorghiou, Roseline Ochieng, Yasmin A Jaffer, Douglas G Altman, Alison J Noble, Michael G Gravett, Manorama Purwar, Ruyan Pang, Ricardo Uauy, Stephen H Kennedy, Zulfiqar A Bhutta
BACKGROUND: We aimed to describe newborn body composition and identify which anthropometric ratio (weight/length; BMI; or ponderal index, PI) best predicts fat mass (FM) and fat-free mass (FFM). METHODS: Air-displacement plethysmography (PEA POD) was used to estimate FM, FFM and body fat percentage (BF%). Associations between FFM, FM and BF% and weight/length, BMI and PI were evaluated in 1,019 newborns using multivariate regression analysis. Charts for FM, FFM and BF% were generated using a prescriptive sub-sample (n=247)...
April 26, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28445246/single-delivery-of-high-diversity-fecal-microbiota-preparation-by-colonoscopy-is-safe-and-effective-in-increasing-microbial-diversity-in-active-ulcerative-colitis
#4
Vinita Jacob, Carl Crawford, Shirley Cohen-Mekelburg, Monica Viladomiu, Gregory G Putzel, Yecheskel Schneider, Fatiha Chabouni, Sarah OʼNeil, Brian Bosworth, Viola Woo, Nadim J Ajami, Joseph F Petrosino, Ylaine Gerardin, Zain Kassam, Mark Smith, Iliyan D Iliev, Gregory F Sonnenberg, David Artis, Ellen Scherl, Randy S Longman
BACKGROUND: Recent trials suggest fecal microbiota transplantation (FMT) with repeated enemas and high-diversity FMT donors is a promising treatment to induce remission in ulcerative colitis. METHODS: We designed a prospective, open-label pilot study to assess the safety, clinical efficacy, and microbial engraftment of single FMT delivery by colonoscopy for active ulcerative colitis using a 2-donor fecal microbiota preparation (FMP). Safety and clinical endpoints of response, remission, and mucosal healing at week 4 were assessed...
April 25, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28444960/in-vivo-absorption-and-metabolism-of-leptosperin-and-methyl-syringate-abundantly-present-in-manuka-honey
#5
Akari Ishisaka, Shinichi Ikushiro, Mie Takeuchi, Yukako Araki, Maki Juri, Yui Yoshiki, Yoshichika Kawai, Toshio Niwa, Noritoshi Kitamoto, Toshiyuki Sakaki, Hirohito Ishikawa, Yoji Kato
SCOPE: Manuka honey, which shows strong non-peroxide-dependent antibacterial activity, contains unique components, such as methyl syringate 4-O-β-D-gentiobioside (leptosperin) and its aglycone, methyl syringate (MSYR). To determine the potential for biological activity evoked by the ingestion of leptosperin and MSYR, we investigated the absorption and metabolism of these components in manuka honey. METHODS AND RESULTS: The incubation of MSYR with liver microsomes or S9 fractions in vitro resulted in the formation of MSYR-glucuronide (MSYR-GA), MSYR-sulfate (MSYR-S), and syringic acid as metabolites...
April 26, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28444697/population-pharmacokinetics-of-dexmedetomidine-in-infants
#6
Rachel G Greenberg, Huali Wu, Matthew Laughon, Edmund Capparelli, Stevie Rowe, Kanecia O Zimmerman, P Brian Smith, Michael Cohen-Wolkowiez
Despite limited pharmacokinetic (PK) data, dexmedetomidine is increasingly being used off-label for sedation in infants. We aimed to characterize the developmental PK changes of dexmedetomidine during infancy. In this open-label, single-center PK study of dexmedetomidine in infants receiving dexmedetomidine per clinical care, ≤10 blood samples per infant were collected. A set of structural PK models and residual error models were explored using nonlinear mixed-effects modeling in NONMEM. Covariates including postmenstrual age (PMA), serum creatinine, and recent history of cardiac surgery requiring cardiopulmonary bypass were investigated for their influence on PK parameters...
April 25, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28444570/current-mitraclip-experience-safety-and-feasibility-in-the-netherlands
#7
Z Rahhab, F A Kortlandt, J F Velu, R A J Schurer, V Delgado, P Tonino, A J Boven, B J L Van den Branden, A O Kraaijeveld, M Voskuil, J Hoorntje, M van Wely, K van Houwelingen, G B Bleeker, B Rensing, I Kardys, J Baan, J A S Van der Heyden, N M Van Mieghem
PURPOSE: Data on MitraClip procedural safety and efficacy in the Netherlands are scarce. We aim to provide an overview of the Dutch MitraClip experience. METHODS: We pooled anonymised demographic and procedural data of 1151 consecutive MitraClip patients, from 13 Dutch hospitals. Data was collected by product specialists in collaboration with local operators. Effect on mitral regurgitation was intra-procedurally assessed by transoesophageal echocardiography. Technical success and device success were defined according to modified definitions of the Mitral Valve Academic Research Consortium (MVARC)...
April 25, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28444312/early-posthatch-thermal-stress-affects-breast-muscle-development-and-satellite-cell-growth-and-characteristics-in-broilers
#8
Yogev Piestun, Tomer Patael, Shlomo Yahav, Sandra G Velleman, Orna Halevy
Heat or cold stress, can disrupt well-being and physiological responses in birds. This study aimed to elucidate the effects of continuous heat exposure in the first 2 wk of age on muscle development in broilers, with an emphasis on the pectoralis muscle satellite cell population. Chicks were reared for 13 d under either commercial conditions or a temperature regime that was 5°C higher. Body and muscle weights, as well as absolute muscle growth were lower in heat-exposed chicks from d 6 onward. The number of satellite cells derived from the experimental chicks was higher in the heat-treated group on d 3 but lower on d 8 and 13 compared to controls...
April 24, 2017: Poultry Science
https://www.readbyqxmd.com/read/28444112/incidence-course-and-management-of-toxicities-associated-with-cobimetinib-in-combination-with-vemurafenib-in-the-cobrim-study
#9
B Dréno, A Ribas, J Larkin, P A Ascierto, A Hauschild, L Thomas, J-J Grob, D O Koralek, I Rooney, J J Hsu, E F McKenna, G A McArthur
The combination of cobimetinib plus vemurafenib is well tolerated in patients with advanced BRAFV600-mutated melanomaAEs generally occur early and are manageable through patient monitoring, dose modification, and supportive careThe favourable safety profile and significantly improved patient outcomes support the use of cobimetinib plus vemurafenib as a standard of care for initial treatment.
April 21, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28444098/the-cerebrospinal-fluid-in-multiple-sclerosis-far-beyond-the-bands
#10
Renan Barros Domingues, Gustavo Bruniera Peres Fernandes, Fernando Brunale Vilela de Moura Leite, Charles Peter Tilbery, Rodrigo Barbosa Thomaz, Gisele Sampaio Silva, Cristóvão Luis Pitangueira Mangueira, Carlos Augusto Senne Soares
The cerebrospinal fluid analysis has been employed for supporting multiple sclerosis diagnosis and ruling out the differential diagnoses. The most classical findings reflect the inflammatory nature of the disease, including mild pleocytosis, mild protein increase, intrathecal synthesis of immunoglobulin G, and, most typically, the presence of oligoclonal bands. In recent years, new biomarkers have emerged in the context of multiple sclerosis. The search for new biomarkers reflect the need of a better evaluation of disease activity, disease progression, and treatment efficiency...
January 2017: Einstein
https://www.readbyqxmd.com/read/28444062/prognostic-value-of-coronary-flow-reserve-obtained-on-dobutamine-stress-echocardiography-and-its-correlation-with-target-heart-rate
#11
José Sebastião de Abreu, Eduardo Arrais Rocha, Isadora Sucupira Machado, Isabelle O Parahyba, Thais Brito Rocha, Fernando José Villar Nogueira Paes, Tereza Cristina Pinheiro Diogenes, Marília Esther Benevides de Abreu, Ana Gardenia Liberato Ponte Farias, Marcia Maria Carneiro, José Nogueira Paes
Background: Normal coronary flow velocity reserve (CFVR) (≥ 2) obtained in the left anterior descending coronary artery (LAD) from transthoracic echocardiography is associated with a good prognosis, but there is no study correlating CFVR with submaximal target heart rate (HR). Objective: To evaluate the prognostic value of CFVR obtained in the LAD of patients with preserved (>50%) left ventricular ejection fraction (LVEF) who completed a dobutamine stress echocardiography (DSE), considering target HR...
April 20, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28443987/seroprevalence-of-bactericidal-antibodies-against-serogroup-b-and-c-meningococci-in-a-university-hospital
#12
C A C Gioia, A P S Lemos, M C O Gorla, R Mendoza-Sassi, B S Figueredo, T Ballester, A Von Groll, B Wedig, N V Ethur, L Bragança, P E A Silva, L G Milagres
Meningococcus serogroup B (MenB), clonal complex 32 (cc 32), was the Brazilian epidemic strain of meningococcal disease (MD) in the 1990's. Currently, meningococcus serogroup C (MenC), cc 103, is responsible for most of the cases of the disease in Brazil. The aim of this study was to investigate the seroprevalence of bactericidal antibody (SBA) against representative epidemic strains of MenC, (N753/00 strain, C:23:P1.22,14-6, cc103) and MenB, (Cu385/83 strain, B:4,7:P1.15,19, cc32) in students and employees of a university hospital in the State of Rio Grande do Sul (RS, Brazil)...
April 20, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28443893/trail-np-hybrids-for-cancer-therapy-a-review
#13
REVIEW
H Belkahla, G Herlem, F Picaud, T Gharbi, M Hémadi, S Ammar, O Micheau
Cancer is a worldwide health problem. It is now considered as a leading cause of morbidity and mortality in developed countries. In the last few decades, considerable progress has been made in anti-cancer therapies, allowing the cure of patients suffering from this disease, or at least helping to prolong their lives. Several cancers, such as those of the lung and pancreas, are still devastating in the absence of therapeutic options. In the early 90s, TRAIL (Tumor Necrosis Factor-related apoptosis-inducing ligand), a cytokine belonging to the TNF superfamily, attracted major interest in oncology owing to its selective anti-tumor properties...
April 26, 2017: Nanoscale
https://www.readbyqxmd.com/read/28443889/the-passivating-effect-of-cadmium-in-pbs-cds-colloidal-quantum-dots-probed-by-nm-scale-depth-profiling
#14
Pip C J Clark, Hanna Radtke, Atip Pengpad, Andrew I Williamson, Ben F Spencer, Samantha J O Hardman, Marina A Leontiadou, Darren C J Neo, Simon M Fairclough, Andrew A R Watt, Igor Pis, Silvia Nappini, Federica Bondino, Elena Magnano, Karsten Handrup, Karina Schulte, Mathieu G Silly, Fausto Sirotti, Wendy R Flavell
Achieving control of the surface chemistry of colloidal quantum dots (CQDs) is essential to fully exploit their properties in solar cells, but direct measurement of the chemistry and electronic structure in the outermost atomic layers is challenging. Here we probe the surface oxidation and passivation of cation-exchanged PbS/CdS core/shell CQDs with sub nm-scale precision using synchrotron-radiation-excited depth-profiling photoemission. We investigate the surface composition of the topmost 1-2.5 nm of the CQDs as a function of depth, for CQDs of varying CdS shell thickness, and examine how the surface changes after prolonged air exposure...
April 26, 2017: Nanoscale
https://www.readbyqxmd.com/read/28443869/a-chiral-member-of-the-family-of-organic-hexameric-cages
#15
M Wierzbicki, A A Głowacka, M P Szymański, A Szumna
A cubic nanocage (O symmetry) that exhibits inherent chirality and has a covalent, rigid skeleton with molecule-sized entrance portals was obtained by means of dynamic covalent chemistry using a reaction between aldehyde-functionalized resorcin[4]arene and hydrazine.
April 26, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28443751/a-prospective-cohort-study-assessing-differences-in-cosmetic-appreciation-of-lateralization-while-smiling-in-patients-with-a-peripheral-facial-palsy
#16
Robin E Luijmes, Carien H G Beurskens, Sjaak Pouwels, Koen J A O Ingels
We investigated the differences in cosmetic appreciation of patients with a left and a right peripheral facial palsy (PFP) while smiling. Smiling pictures of patients with a facial palsy with House-Brackmann II-VI were reversed as a mirror image and offered as a pair of pictures, together with the true image. Twenty-six patients with a PFP and 24 medical professionals familiar with facial palsy were asked to choose the most attractive photograph. Patients rated their own pictures. Medical professionals preferred pictures of patients with a right and left PFP in, respectively, a mean of 43...
April 26, 2017: Laterality
https://www.readbyqxmd.com/read/28443625/genome-wide-meta-analysis-of-241-258-adults-accounting-for-smoking-behaviour-identifies-novel-loci-for-obesity-traits
#17
Anne E Justice, Thomas W Winkler, Mary F Feitosa, Misa Graff, Virginia A Fisher, Kristin Young, Llilda Barata, Xuan Deng, Jacek Czajkowski, David Hadley, Julius S Ngwa, Tarunveer S Ahluwalia, Audrey Y Chu, Nancy L Heard-Costa, Elise Lim, Jeremiah Perez, John D Eicher, Zoltán Kutalik, Luting Xue, Anubha Mahajan, Frida Renström, Joseph Wu, Qibin Qi, Shafqat Ahmad, Tamuno Alfred, Najaf Amin, Lawrence F Bielak, Amelie Bonnefond, Jennifer Bragg, Gemma Cadby, Martina Chittani, Scott Coggeshall, Tanguy Corre, Nese Direk, Joel Eriksson, Krista Fischer, Mathias Gorski, Marie Neergaard Harder, Momoko Horikoshi, Tao Huang, Jennifer E Huffman, Anne U Jackson, Johanne Marie Justesen, Stavroula Kanoni, Leena Kinnunen, Marcus E Kleber, Pirjo Komulainen, Meena Kumari, Unhee Lim, Jian'an Luan, Leo-Pekka Lyytikäinen, Massimo Mangino, Ani Manichaikul, Jonathan Marten, Rita P S Middelberg, Martina Müller-Nurasyid, Pau Navarro, Louis Pérusse, Natalia Pervjakova, Cinzia Sarti, Albert Vernon Smith, Jennifer A Smith, Alena Stančáková, Rona J Strawbridge, Heather M Stringham, Yun Ju Sung, Toshiko Tanaka, Alexander Teumer, Stella Trompet, Sander W van der Laan, Peter J van der Most, Jana V Van Vliet-Ostaptchouk, Sailaja L Vedantam, Niek Verweij, Jacqueline M Vink, Veronique Vitart, Ying Wu, Loic Yengo, Weihua Zhang, Jing Hua Zhao, Martina E Zimmermann, Niha Zubair, Gonçalo R Abecasis, Linda S Adair, Saima Afaq, Uzma Afzal, Stephan J L Bakker, Traci M Bartz, John Beilby, Richard N Bergman, Sven Bergmann, Reiner Biffar, John Blangero, Eric Boerwinkle, Lori L Bonnycastle, Erwin Bottinger, Daniele Braga, Brendan M Buckley, Steve Buyske, Harry Campbell, John C Chambers, Francis S Collins, Joanne E Curran, Gert J de Borst, Anton J M de Craen, Eco J C de Geus, George Dedoussis, Graciela E Delgado, Hester M den Ruijter, Gudny Eiriksdottir, Anna L Eriksson, Tõnu Esko, Jessica D Faul, Ian Ford, Terrence Forrester, Karl Gertow, Bruna Gigante, Nicola Glorioso, Jian Gong, Harald Grallert, Tanja B Grammer, Niels Grarup, Saskia Haitjema, Göran Hallmans, Anders Hamsten, Torben Hansen, Tamara B Harris, Catharina A Hartman, Maija Hassinen, Nicholas D Hastie, Andrew C Heath, Dena Hernandez, Lucia Hindorff, Lynne J Hocking, Mette Hollensted, Oddgeir L Holmen, Georg Homuth, Jouke Jan Hottenga, Jie Huang, Joseph Hung, Nina Hutri-Kähönen, Erik Ingelsson, Alan L James, John-Olov Jansson, Marjo-Riitta Jarvelin, Min A Jhun, Marit E Jørgensen, Markus Juonala, Mika Kähönen, Magnus Karlsson, Heikki A Koistinen, Ivana Kolcic, Genovefa Kolovou, Charles Kooperberg, Bernhard K Krämer, Johanna Kuusisto, Kirsti Kvaløy, Timo A Lakka, Claudia Langenberg, Lenore J Launer, Karin Leander, Nanette R Lee, Lars Lind, Cecilia M Lindgren, Allan Linneberg, Stephane Lobbens, Marie Loh, Mattias Lorentzon, Robert Luben, Gitta Lubke, Anja Ludolph-Donislawski, Sara Lupoli, Pamela A F Madden, Reija Männikkö, Pedro Marques-Vidal, Nicholas G Martin, Colin A McKenzie, Barbara McKnight, Dan Mellström, Cristina Menni, Grant W Montgomery, Aw Bill Musk, Narisu Narisu, Matthias Nauck, Ilja M Nolte, Albertine J Oldehinkel, Matthias Olden, Ken K Ong, Sandosh Padmanabhan, Patricia A Peyser, Charlotta Pisinger, David J Porteous, Olli T Raitakari, Tuomo Rankinen, D C Rao, Laura J Rasmussen-Torvik, Rajesh Rawal, Treva Rice, Paul M Ridker, Lynda M Rose, Stephanie A Bien, Igor Rudan, Serena Sanna, Mark A Sarzynski, Naveed Sattar, Kai Savonen, David Schlessinger, Salome Scholtens, Claudia Schurmann, Robert A Scott, Bengt Sennblad, Marten A Siemelink, Günther Silbernagel, P Eline Slagboom, Harold Snieder, Jan A Staessen, David J Stott, Morris A Swertz, Amy J Swift, Kent D Taylor, Bamidele O Tayo, Barbara Thorand, Dorothee Thuillier, Jaakko Tuomilehto, Andre G Uitterlinden, Liesbeth Vandenput, Marie-Claude Vohl, Henry Völzke, Judith M Vonk, Gérard Waeber, Melanie Waldenberger, R G J Westendorp, Sarah Wild, Gonneke Willemsen, Bruce H R Wolffenbuttel, Andrew Wong, Alan F Wright, Wei Zhao, M Carola Zillikens, Damiano Baldassarre, Beverley Balkau, Stefania Bandinelli, Carsten A Böger, Dorret I Boomsma, Claude Bouchard, Marcel Bruinenberg, Daniel I Chasman, Yii-DerIda Chen, Peter S Chines, Richard S Cooper, Francesco Cucca, Daniele Cusi, Ulf de Faire, Luigi Ferrucci, Paul W Franks, Philippe Froguel, Penny Gordon-Larsen, Hans-Jörgen Grabe, Vilmundur Gudnason, Christopher A Haiman, Caroline Hayward, Kristian Hveem, Andrew D Johnson, J Wouter Jukema, Sharon L R Kardia, Mika Kivimaki, Jaspal S Kooner, Diana Kuh, Markku Laakso, Terho Lehtimäki, Loic Le Marchand, Winfried März, Mark I McCarthy, Andres Metspalu, Andrew P Morris, Claes Ohlsson, Lyle J Palmer, Gerard Pasterkamp, Oluf Pedersen, Annette Peters, Ulrike Peters, Ozren Polasek, Bruce M Psaty, Lu Qi, Rainer Rauramaa, Blair H Smith, Thorkild I A Sørensen, Konstantin Strauch, Henning Tiemeier, Elena Tremoli, Pim van der Harst, Henrik Vestergaard, Peter Vollenweider, Nicholas J Wareham, David R Weir, John B Whitfield, James F Wilson, Jessica Tyrrell, Timothy M Frayling, Inês Barroso, Michael Boehnke, Panagiotis Deloukas, Caroline S Fox, Joel N Hirschhorn, David J Hunter, Tim D Spector, David P Strachan, Cornelia M van Duijn, Iris M Heid, Karen L Mohlke, Jonathan Marchini, Ruth J F Loos, Tuomas O Kilpeläinen, Ching-Ti Liu, Ingrid B Borecki, Kari E North, L Adrienne Cupples
Few genome-wide association studies (GWAS) account for environmental exposures, like smoking, potentially impacting the overall trait variance when investigating the genetic contribution to obesity-related traits. Here, we use GWAS data from 51,080 current smokers and 190,178 nonsmokers (87% European descent) to identify loci influencing BMI and central adiposity, measured as waist circumference and waist-to-hip ratio both adjusted for BMI. We identify 23 novel genetic loci, and 9 loci with convincing evidence of gene-smoking interaction (GxSMK) on obesity-related traits...
April 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28443606/genotype-outcome-correlations-in-pediatric-aml-the-impact-of-a-monosomal-karyotype-in-trial-aml-bfm-2004
#18
M Rasche, C von Neuhoff, M Dworzak, J-P Bourquin, J Bradtke, G Göhring, G Escherich, G Fleischhack, N Graf, B Gruhn, O Haas, T Klingebiel, B Kremens, T Lehrnbecher, A von Stackelberg, J Tchinda, Z Zemanova, C Thiede, N von Neuhoff N, M Zimmermann, U Creutzig, D Reinhardt
We conducted a cytogenetic analysis of 642 children with de novo acute myeloid leukemia (AML) treated on the AML-Berlin-Frankfurt-Münster (BFM) 04 protocol to determine the prognostic value of specific chromosomal aberrations including monosomal (MK(+)), complex (CK(+)), and hypodiploid (HK(+)) karyotypes, individually and in combination. Multivariate regression analysis identified in particular MK(+) (n=22) as a new independent risk factor for poor event-free survival (EFS; 23±9% vs 53±2% for all other patients, P=0...
April 25, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28443601/self-assembly-of-defect-rich-graphene-oxide-nanosheets-with-na-sub-2-sub-ti-sub-3-sub-o-sub-7-sub-nanowires-and-their-superiorly-absorptive-capacity-towards-to-toxic-dyes
#19
Yibai Sun, Wanlin Fu, Yunqian Dai, Yiyang Huang, Jie Zhou, Chengqian Huang, Chongya Yang, Meiyou Huang, Rongwei Ma, Baoping Lin
Graphene sheets, a flexible two-dimensional material with excellent absorptive capacity, have great potential as absorbing materials. However, it has always been suffering from irreversible aggregation and thus lose the abundant active sites and large surface area. In this paper, large-scale graphene oxide (GO) sheets were cut and reduced into tiny reduced graphene oxide (RGO) sheets by a cell-break sonicator, for producing numerous defects which is the center of chemisorption. Furthermore, sodium titanate nanowires functioned as a framework help to disperse tiny RGO sheets uniformly...
April 26, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28443369/electro-activation-of-persulfate-using-iron-sheet-as-low-cost-electrode-the-role-of-the-operating-conditions
#20
Jefferson E Silveira, Tais O Cardoso, Marcio Barreto-Rodrigues, Juan A Zazo, José A Casas
This work assesses the role of the operational conditions upon the electro-activation of persulfate (PS) using sacrificed iron electrode as a continuous low-cost Fe(2+) source. An aqueous phenol solution (100 mg L(-1)) was selected as model effluent. The studied variables include current density (1-10mA cm(-2)), persulfate concentration (0.7-2.85 g L(-1)), temperature (30-90°C>) and the solution conductivity (2.7 to 20.7 mS cm(-1)) using Na2SO4 and NaCl as supporting electrolyte. A mineralization degree around 80% with Na2SO4 and 92% in presence of NaCl was achieved at 30°C using 2...
April 26, 2017: Environmental Technology
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