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https://www.readbyqxmd.com/read/28731109/the-preference-for-dual-gold-i-catalysis-in-the-hydro-alkoxylation-vs-phenoxylation-of-alkynes
#1
Èric Casals-Cruañas, Oscar F González-Belman, Pau Besalú-Sala, David J Nelson, Albert Poater
Dinuclear gold complexes and their use in catalysis have received significant recent attention, but there are few critical comparisons of mono- versus dual gold-catalysed pathways. Herein we study the hydroalkoxylation and hydrophenoxylation of alkynes using density functional theory calculations, and compare two possible mechanisms that have been proposed previously on the basis of theoretical and experimental studies, which unravel different preferences because of both the nature of the alkyne and alcohol and the non-innocent role of the counter-anion of a dual gold based catalyst...
July 21, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28729547/antarctic-sea-ice-region-as-a-source-of-biogenic-organic-nitrogen-in-aerosols
#2
Manuel Dall'Osto, Jurgita Ovadnevaite, Marco Paglione, David C S Beddows, Darius Ceburnis, Charlotte Cree, Pau Cortés, Marina Zamanillo, Sdena O Nunes, Gonzalo L Pérez, Eva Ortega-Retuerta, Mikhail Emelianov, Dolors Vaqué, Cèlia Marrasé, Marta Estrada, M Montserrat Sala, Montserrat Vidal, Mark F Fitzsimons, Rachael Beale, Ruth Airs, Matteo Rinaldi, Stefano Decesari, Maria Cristina Facchini, Roy M Harrison, Colin O'Dowd, Rafel Simó
Climate warming affects the development and distribution of sea ice, but at present the evidence of polar ecosystem feedbacks on climate through changes in the atmosphere is sparse. By means of synergistic atmospheric and oceanic measurements in the Southern Ocean near Antarctica, we present evidence that the microbiota of sea ice and sea ice-influenced ocean are a previously unknown significant source of atmospheric organic nitrogen, including low molecular weight alkyl-amines. Given the keystone role of nitrogen compounds in aerosol formation, growth and neutralization, our findings call for greater chemical and source diversity in the modelling efforts linking the marine ecosystem to aerosol-mediated climate effects in the Southern Ocean...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28725071/inferior-cava-vein-syndrome-and-heart-compression-due-to-a-giant-liver-cyst
#3
Pau Bosch Nicolau, José Luís Lázaro, Lluis Viladomiu, Xavier Merino Casabiel, Mar Riveiro-Barciela
No abstract text is available yet for this article.
July 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28722303/differential-electrochemical-conductance-imaging-at-the-nanoscale
#4
Montserrat López-Martínez, Juan Manuel Artés, Veronica Sarasso, Marco Carminati, Ismael Díez-Pérez, Fausto Sanz, Pau Gorostiza
Electron transfer in proteins is essential in crucial biological processes. Although the fundamental aspects of biological electron transfer are well characterized, currently there are no experimental tools to determine the atomic-scale electronic pathways in redox proteins, and thus to fully understand their outstanding efficiency and environmental adaptability. This knowledge is also required to design and optimize biomolecular electronic devices. In order to measure the local conductance of an electrode surface immersed in an electrolyte, this study builds upon the current-potential spectroscopic capacity of electrochemical scanning tunneling microscopy, by adding an alternating current modulation technique...
July 19, 2017: Small
https://www.readbyqxmd.com/read/28720218/pesticide-analysis-in-coffee-leaves-using-a-quick-easy-cheap-effective-rugged-and-safe-approach-and-liquid-chromatography-tandem-mass-spectrometry-optimization-of-the-clean-up-step
#5
Maria Teresa Salles Trevisan, Robert Wyn Owen, Pau Calatayud-Vernich, Andrea Breuer, Yolanda Picó
An analytical method using a quick, easy, cheap, effective, rugged and safe (QuEChERS) procedure for multi-residue determination of 52 pesticides in coffee leaf extractshas been developed and validated according to SANTE/11945/2015 guidelines. Different sorbent combinations for dispersive solid phase extraction (d-SPE) clean-up as well as dispersive liquid-liquid microextraction (DLLME) were tested. The relative standard deviations (RSDs) for the recovery of 87-94% of pesticides added to coffee leaf extracts,was ≤20% for samples spiked at concentrations up to 50ng*g(-1) depending on the clean-up procedures...
July 11, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28714976/rare-coding-variants-in-plcg2-abi3-and-trem2-implicate-microglial-mediated-innate-immunity-in-alzheimer-s-disease
#6
Rebecca Sims, Sven J van der Lee, Adam C Naj, Céline Bellenguez, Nandini Badarinarayan, Johanna Jakobsdottir, Brian W Kunkle, Anne Boland, Rachel Raybould, Joshua C Bis, Eden R Martin, Benjamin Grenier-Boley, Stefanie Heilmann-Heimbach, Vincent Chouraki, Amanda B Kuzma, Kristel Sleegers, Maria Vronskaya, Agustin Ruiz, Robert R Graham, Robert Olaso, Per Hoffmann, Megan L Grove, Badri N Vardarajan, Mikko Hiltunen, Markus M Nöthen, Charles C White, Kara L Hamilton-Nelson, Jacques Epelbaum, Wolfgang Maier, Seung-Hoan Choi, Gary W Beecham, Cécile Dulary, Stefan Herms, Albert V Smith, Cory C Funk, Céline Derbois, Andreas J Forstner, Shahzad Ahmad, Hongdong Li, Delphine Bacq, Denise Harold, Claudia L Satizabal, Otto Valladares, Alessio Squassina, Rhodri Thomas, Jennifer A Brody, Liming Qu, Pascual Sánchez-Juan, Taniesha Morgan, Frank J Wolters, Yi Zhao, Florentino Sanchez Garcia, Nicola Denning, Myriam Fornage, John Malamon, Maria Candida Deniz Naranjo, Elisa Majounie, Thomas H Mosley, Beth Dombroski, David Wallon, Michelle K Lupton, Josée Dupuis, Patrice Whitehead, Laura Fratiglioni, Christopher Medway, Xueqiu Jian, Shubhabrata Mukherjee, Lina Keller, Kristelle Brown, Honghuang Lin, Laura B Cantwell, Francesco Panza, Bernadette McGuinness, Sonia Moreno-Grau, Jeremy D Burgess, Vincenzo Solfrizzi, Petra Proitsi, Hieab H Adams, Mariet Allen, Davide Seripa, Pau Pastor, L Adrienne Cupples, Nathan D Price, Didier Hannequin, Ana Frank-García, Daniel Levy, Paramita Chakrabarty, Paolo Caffarra, Ina Giegling, Alexa S Beiser, Vilmantas Giedraitis, Harald Hampel, Melissa E Garcia, Xue Wang, Lars Lannfelt, Patrizia Mecocci, Gudny Eiriksdottir, Paul K Crane, Florence Pasquier, Virginia Boccardi, Isabel Henández, Robert C Barber, Martin Scherer, Lluis Tarraga, Perrie M Adams, Markus Leber, Yuning Chen, Marilyn S Albert, Steffi Riedel-Heller, Valur Emilsson, Duane Beekly, Anne Braae, Reinhold Schmidt, Deborah Blacker, Carlo Masullo, Helena Schmidt, Rachelle S Doody, Gianfranco Spalletta, W T Longstreth Jr, Thomas J Fairchild, Paola Bossù, Oscar L Lopez, Matthew P Frosch, Eleonora Sacchinelli, Bernardino Ghetti, Qiong Yang, Ryan M Huebinger, Frank Jessen, Shuo Li, M Ilyas Kamboh, John Morris, Oscar Sotolongo-Grau, Mindy J Katz, Chris Corcoran, Melanie Dunstan, Amy Braddel, Charlene Thomas, Alun Meggy, Rachel Marshall, Amy Gerrish, Jade Chapman, Miquel Aguilar, Sarah Taylor, Matt Hill, Mònica Díez Fairén, Angela Hodges, Bruno Vellas, Hilkka Soininen, Iwona Kloszewska, Makrina Daniilidou, James Uphill, Yogen Patel, Joseph T Hughes, Jenny Lord, James Turton, Annette M Hartmann, Roberta Cecchetti, Chiara Fenoglio, Maria Serpente, Marina Arcaro, Carlo Caltagirone, Maria Donata Orfei, Antonio Ciaramella, Sabrina Pichler, Manuel Mayhaus, Wei Gu, Alberto Lleó, Juan Fortea, Rafael Blesa, Imelda S Barber, Keeley Brookes, Chiara Cupidi, Raffaele Giovanni Maletta, David Carrell, Sandro Sorbi, Susanne Moebus, Maria Urbano, Alberto Pilotto, Johannes Kornhuber, Paolo Bosco, Stephen Todd, David Craig, Janet Johnston, Michael Gill, Brian Lawlor, Aoibhinn Lynch, Nick C Fox, John Hardy, Roger L Albin, Liana G Apostolova, Steven E Arnold, Sanjay Asthana, Craig S Atwood, Clinton T Baldwin, Lisa L Barnes, Sandra Barral, Thomas G Beach, James T Becker, Eileen H Bigio, Thomas D Bird, Bradley F Boeve, James D Bowen, Adam Boxer, James R Burke, Jeffrey M Burns, Joseph D Buxbaum, Nigel J Cairns, Chuanhai Cao, Chris S Carlson, Cynthia M Carlsson, Regina M Carney, Minerva M Carrasquillo, Steven L Carroll, Carolina Ceballos Diaz, Helena C Chui, David G Clark, David H Cribbs, Elizabeth A Crocco, Charles DeCarli, Malcolm Dick, Ranjan Duara, Denis A Evans, Kelley M Faber, Kenneth B Fallon, David W Fardo, Martin R Farlow, Steven Ferris, Tatiana M Foroud, Douglas R Galasko, Marla Gearing, Daniel H Geschwind, John R Gilbert, Neill R Graff-Radford, Robert C Green, John H Growdon, Ronald L Hamilton, Lindy E Harrell, Lawrence S Honig, Matthew J Huentelman, Christine M Hulette, Bradley T Hyman, Gail P Jarvik, Erin Abner, Lee-Way Jin, Gyungah Jun, Anna Karydas, Jeffrey A Kaye, Ronald Kim, Neil W Kowall, Joel H Kramer, Frank M LaFerla, James J Lah, James B Leverenz, Allan I Levey, Ge Li, Andrew P Lieberman, Kathryn L Lunetta, Constantine G Lyketsos, Daniel C Marson, Frank Martiniuk, Deborah C Mash, Eliezer Masliah, Wayne C McCormick, Susan M McCurry, Andrew N McDavid, Ann C McKee, Marsel Mesulam, Bruce L Miller, Carol A Miller, Joshua W Miller, John C Morris, Jill R Murrell, Amanda J Myers, Sid O'Bryant, John M Olichney, Vernon S Pankratz, Joseph E Parisi, Henry L Paulson, William Perry, Elaine Peskind, Aimee Pierce, Wayne W Poon, Huntington Potter, Joseph F Quinn, Ashok Raj, Murray Raskind, Barry Reisberg, Christiane Reitz, John M Ringman, Erik D Roberson, Ekaterina Rogaeva, Howard J Rosen, Roger N Rosenberg, Mark A Sager, Andrew J Saykin, Julie A Schneider, Lon S Schneider, William W Seeley, Amanda G Smith, Joshua A Sonnen, Salvatore Spina, Robert A Stern, Russell H Swerdlow, Rudolph E Tanzi, Tricia A Thornton-Wells, John Q Trojanowski, Juan C Troncoso, Vivianna M Van Deerlin, Linda J Van Eldik, Harry V Vinters, Jean Paul Vonsattel, Sandra Weintraub, Kathleen A Welsh-Bohmer, Kirk C Wilhelmsen, Jennifer Williamson, Thomas S Wingo, Randall L Woltjer, Clinton B Wright, Chang-En Yu, Lei Yu, Fabienne Garzia, Feroze Golamaully, Gislain Septier, Sebastien Engelborghs, Rik Vandenberghe, Peter P De Deyn, Carmen Muñoz Fernadez, Yoland Aladro Benito, Hakan Thonberg, Charlotte Forsell, Lena Lilius, Anne Kinhult-Stählbom, Lena Kilander, RoseMarie Brundin, Letizia Concari, Seppo Helisalmi, Anne Maria Koivisto, Annakaisa Haapasalo, Vincent Dermecourt, Nathalie Fievet, Olivier Hanon, Carole Dufouil, Alexis Brice, Karen Ritchie, Bruno Dubois, Jayanadra J Himali, C Dirk Keene, JoAnn Tschanz, Annette L Fitzpatrick, Walter A Kukull, Maria Norton, Thor Aspelund, Eric B Larson, Ron Munger, Jerome I Rotter, Richard B Lipton, María J Bullido, Albert Hofman, Thomas J Montine, Eliecer Coto, Eric Boerwinkle, Ronald C Petersen, Victoria Alvarez, Fernando Rivadeneira, Eric M Reiman, Maura Gallo, Christopher J O'Donnell, Joan S Reisch, Amalia Cecilia Bruni, Donald R Royall, Martin Dichgans, Mary Sano, Daniela Galimberti, Peter St George-Hyslop, Elio Scarpini, Debby W Tsuang, Michelangelo Mancuso, Ubaldo Bonuccelli, Ashley R Winslow, Antonio Daniele, Chuang-Kuo Wu, Oliver Peters, Benedetta Nacmias, Matthias Riemenschneider, Reinhard Heun, Carol Brayne, David C Rubinsztein, Jose Bras, Rita Guerreiro, Ammar Al-Chalabi, Christopher E Shaw, John Collinge, David Mann, Magda Tsolaki, Jordi Clarimón, Rebecca Sussams, Simon Lovestone, Michael C O'Donovan, Michael J Owen, Timothy W Behrens, Simon Mead, Alison M Goate, Andre G Uitterlinden, Clive Holmes, Carlos Cruchaga, Martin Ingelsson, David A Bennett, John Powell, Todd E Golde, Caroline Graff, Philip L De Jager, Kevin Morgan, Nilufer Ertekin-Taner, Onofre Combarros, Bruce M Psaty, Peter Passmore, Steven G Younkin, Claudine Berr, Vilmundur Gudnason, Dan Rujescu, Dennis W Dickson, Jean-François Dartigues, Anita L DeStefano, Sara Ortega-Cubero, Hakon Hakonarson, Dominique Campion, Merce Boada, John Keoni Kauwe, Lindsay A Farrer, Christine Van Broeckhoven, M Arfan Ikram, Lesley Jones, Jonathan L Haines, Christophe Tzourio, Lenore J Launer, Valentina Escott-Price, Richard Mayeux, Jean-François Deleuze, Najaf Amin, Peter A Holmans, Margaret A Pericak-Vance, Philippe Amouyel, Cornelia M van Duijn, Alfredo Ramirez, Li-San Wang, Jean-Charles Lambert, Sudha Seshadri, Julie Williams, Gerard D Schellenberg
We identified rare coding variants associated with Alzheimer's disease in a three-stage case-control study of 85,133 subjects. In stage 1, we genotyped 34,174 samples using a whole-exome microarray. In stage 2, we tested associated variants (P < 1 × 10(-4)) in 35,962 independent samples using de novo genotyping and imputed genotypes. In stage 3, we used an additional 14,997 samples to test the most significant stage 2 associations (P < 5 × 10(-8)) using imputed genotypes. We observed three new genome-wide significant nonsynonymous variants associated with Alzheimer's disease: a protective variant in PLCG2 (rs72824905: p...
July 17, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28714854/evaluation-of-bone-formation-in-calcium-phosphate-scaffolds-with-%C3%A2%C2%B5ct-method-validation-using-sem
#7
Susanne Lewin, Albert Barba, Cecilia Persson, Jordi Franch Serracanta, Maria Pau Ginebra, Caroline Öhman
There is a plethora of Calcium phosphate (CaP) scaffolds used as synthetic substitutes to bone grafts. The scaffold performance is often evaluated from the quantity of bone formed within or in direct contact with the scaffold. Micro computed tomography (µCT) allows three-dimensional evaluation of bone formation inside scaffolds. However, the almost identical x-ray attenuation of CaP and bone obtrude the separation of these phases in µCT images. Commonly, segmentation of bone in µCT images is based on gray scale intensity, with manually determined global thresholds...
July 17, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28714577/direct-laser-interference-patterning-of-cocr-alloy-surfaces-to-control-endothelial-cell-and-platelet-response-for-cardiovascular-applications
#8
Romain Schieber, Federico Lasserre, Michael Hans, Marc Fernández-Yagüe, Maribel Díaz-Ricart, Ginés Escolar, Maria-Pau Ginebra, Frank Mücklich, Marta Pegueroles
The main drawbacks of cardiovascular bare-metal stents (BMS) are in-stent restenosis and stent thrombosis as a result of an incomplete endothelialization after stent implantation. Nano- and microscale modification of implant surfaces is a strategy to recover the functionality of the artery by stimulating and guiding molecular and biological processes at the implant/tissue interface. In this study, cobalt-chromium (CoCr) alloy surfaces are modified via direct laser interference patterning (DLIP) in order to create linear patterning onto CoCr surfaces with different periodicities (≈3, 10, 20, and 32 µm) and depths (≈20 and 800 nm)...
July 17, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28712360/resisting-and-tolerating-p-falciparum-in-pregnancy-under-different-malaria-transmission-intensities
#9
Nicaise Tuikue Ndam, Emmanuel Mbuba, Raquel González, Pau Cisteró, Simon Kariuki, Esperança Sevene, María Rupérez, Ana Maria Fonseca, Anifa Vala, Sonia Maculuve, Alfons Jiménez, Llorenç Quintó, Peter Ouma, Michael Ramharter, John J Aponte, Arsenio Nhacolo, Achille Massougbodji, Valerie Briand, Peter G Kremsner, Ghyslain Mombo-Ngoma, Meghna Desai, Eusebio Macete, Michel Cot, Clara Menéndez, Alfredo Mayor
BACKGROUND: Resistance and tolerance to Plasmodium falciparum can determine the progression of malaria disease. However, quantitative evidence of tolerance is still limited. We investigated variations in the adverse impact of P. falciparum infections among African pregnant women under different intensities of malaria transmission. METHODS: P. falciparum at delivery was assessed by microscopy, quantitative PCR (qPCR) and placental histology in 946 HIV-uninfected and 768 HIV-infected pregnant women from Benin, Gabon, Kenya and Mozambique...
July 17, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28709323/noise-induced-stabilization-of-collective-dynamics
#10
Pau Clusella, Antonio Politi
We illustrate a counterintuitive effect of an additive stochastic force, which acts independently on each element of an ensemble of globally coupled oscillators. We show that a very small white noise not only broadens the clusters, wherever they are induced by the deterministic forces, but can also stabilize a linearly unstable collective periodic regime: self-consistent partial synchrony. With the help of microscopic simulations we are able to identify two noise-induced bifurcations. A macroscopic analysis, based on a perturbative solution of the associated nonlinear Fokker-Planck equation, confirms the numerical studies and allows determining the eigenvalues of the stability problem...
June 2017: Physical Review. E
https://www.readbyqxmd.com/read/28709101/the-impact-of-prenatal-perfluoroalkyl-substances-exposure-on-neonatal-and-child-growth
#11
Mei-Huei Chen, Sharon Ng, Chia-Jung Hsieh, Ching-Chun Lin, Wu-Shiun Hsieh, Pau-Chung Chen
BACKGROUND: Perfluoroalkyl substances (PFASs) are wildly distributed environmental pollutants. Laboratory mice exposed prenatally to PFASs develop smaller birth weight but are more likely to become obese in adulthood. The evidences in human studies are still inconclusive. METHODS: The participants were 429 mother-infant pairs from Taiwan Birth Panel Study. These children were followed serially and growth data were collected through face to face interviews and records in Child Healthcare Handbooks until 108months of age...
July 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28704316/effects-of-a-tapering-period-on-physical-condition-in-soccer-players
#12
Maria Reyes Beltran-Valls, Guillermo Camarero-López, José Vicente Beltran-Garrido, Pau Cecilia-Gallego
The aim of this research was to analyze the effects of a two-week step tapering period on lower-limb muscle power, change of direction (COD) and acceleration capacities, and on the stress-recovery state in an amateur soccer team. Twenty-two male players were included in the study. Following a six-week progressive training, the sample was divided into: experimental group (n = 11), who did a two-week period of taper in which training volume was 50% reduced (intensity was kept high) and control group (n = 11), which kept on with the training...
July 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28696401/knowledge-of-and-attitudes-to-influenza-vaccination-among-community-pharmacists-in-catalonia-spain-2013-2014-season-a-cross-sectional-study
#13
Diana Toledo, Núria Soldevila, Rafel Guayta-Escolies, Pau Lozano, Pilar Rius, Pilar Gascón, Angela Domínguez
Annual recommendations on influenza seasonal vaccination include community pharmacists, who have low vaccination coverage. The aim of this study was to investigate the relationship between influenza vaccination in community pharmacists and their knowledge of and attitudes to vaccination. An online cross-sectional survey of community pharmacists in Catalonia, Spain, was conducted between September and November 2014. Sociodemographic, professional and clinical variables, the history of influenza vaccination and knowledge of and attitudes to influenza and seasonal influenza vaccination were collected...
July 11, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28693105/path-analysis-of-prenatal-mercury-levels-and-birth-weights-in-korean-and-taiwanese-birth-cohorts
#14
Byung-Mi Kim, Mei-Huei Chen, Pau-Chung Chen, Hyesook Park, Mina Ha, Yangho Kim, Yun-Chul Hong, Young Ju Kim, Eun-Hee Ha
Prospective cohort studies of the effect of mercury (Hg) exposure on birth weight have shown conflicting results. We combined data from Taiwanese and Korean birth cohorts, and assessed the effects of Hg exposure on birth weight. The first cohort was drawn from the Mothers and Children's Environmental Health (MOCEH) study performed in Korea from 2006 to 2010. The second cohort was enrolled from 2004 to 2005 and included singleton term births from the Taiwan Birth Panel Study (TBPS). In total, 1147 pregnant women were included in this study...
July 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28689958/one-stage-endovascular-treatment-of-a-symptomatic-penetrating-ulcer-in-the-lusorian-artery-and-an-aaa-a-challenging-case-in-a-rare-entity
#15
Mirko Esche, Pavel Sebesta, Sven Seifert
INTRODUCTION: We report a case of a 57-year old man with a successful total endovascular treatment of a symptomatic penetrating arterial ulcer (PAU) of a lusorian artery together with a standard endovascular abdominal aortic aneurysm (AAA) repair. The lusorian artery is an aberrant subclavian artery and a congenital aortic arch anomaly with a reported prevalence of 0.4 to 2.6 %. Typical for the base of the lusorian artery is a Kommerell diverticulum making an endovascular approach even more difficult...
July 6, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28688482/enhancing-automatic-closed-loop-glucose-control-in-type-1-diabetes-with-an-adaptive-meal-bolus-calculator-in-silico-evaluation-under-intra-day-variability
#16
Pau Herrero, Jorge Bondia, Oloruntoba Adewuyi, Peter Pesl, Mohamed El-Sharkawy, Monika Reddy, Chris Toumazou, Nick Oliver, Pantelis Georgiou
BACKGROUND AND OBJECTIVE: Current prototypes of closed-loop systems for glucose control in type 1 diabetes mellitus, also referred to as artificial pancreas systems, require a pre-meal insulin bolus to compensate for delays in subcutaneous insulin absorption in order to avoid initial post-prandial hyperglycemia. Computing such a meal bolus is a challenging task due to the high intra-subject variability of insulin requirements. Most closed-loop systems compute this pre-meal insulin dose by a standard bolus calculation, as is commonly found in insulin pumps...
July 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28686954/-2-jhh-resolved-hsqc-exclusive-determination-of-geminal-proton-proton-coupling-constants
#17
Núria Marcó, Pau Nolis, Roberto R Gil, Teodor Parella
The measurement of two-bond proton-proton coupling constants ((2)JHH) in prochiral CH2 groups from the F2 dimension of 2D spectra is not easy due to the usual presence of complex multiplet J patterns, line broadening effects and strong coupling artifacts. These drawbacks are particularly pronounced and frequent in AB spin systems, as those normally exhibited by the pair of diastereotopic CH2 protons. Here, a novel (2)JHH-resolved HSQC experiment for the exclusive and accurate determination of the magnitude of (2)JHH from the doublet displayed along the highly-resolved indirect F1 dimension is described...
June 23, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28684687/high-ultraviolet-absorption-in-colloidal-gallium-nanoparticles-prepared-from-thermal-evaporation
#18
Flavio Nucciarelli, Iria Bravo, Sergio Catalan-Gomez, Luis Vázquez, Encarnación Lorenzo, Jose Luis Pau
New methods for the production of colloidal Ga nanoparticles (GaNPs) are introduced based on the evaporation of gallium on expendable aluminum zinc oxide (AZO) layer. The nanoparticles can be prepared in aqueous or organic solvents such as tetrahydrofuran in order to be used in different sensing applications. The particles had a quasi mono-modal distribution with diameters ranging from 10 nm to 80 nm, and their aggregation status depended on the solvent nature. Compared to common chemical synthesis, our method assures higher yield with the possibility of tailoring particles size by adjusting the deposition time...
July 6, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28683424/prenatal-phenolic-compounds-exposure-and-neurobehavioral-development-at-2-and-7years-of-age
#19
Ching-Chun Lin, Chun-Ju Chien, Meng-Shan Tsai, Chia-Jung Hsieh, Wu-Shiun Hsieh, Pau-Chung Chen
BACKGROUND: Phenolic compounds such as bisphenol A (BPA), nonylphenol (NP), and octylphenol (OP) are known as endocrine-disrupting compounds and are commonly used. Their impacts on the neurodevelopment of children are inconclusive. The current study aims to investigate the association between umbilical cord blood levels of BPA, NP, OP and neurodevelopmental outcomes at 2 and 7years of age. METHODS: The study was based on the Taiwan Birth Panel Study, a prospective birth cohort...
July 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28681397/infatile-hemangiomas-with-minimal-or-arrested-growth-associated-with-soft-tissue-hypertrophy-a-case-series-of-10-patients
#20
S Planas-Ciudad, E Roé Crespo, I Sánchez-Carpintero, I J Frieden, A Martín-Santiago, P Redondo Bellón, E Moreno Artero, E Osier, L Puig Sanz, E Baselga Torres
BACKGROUND: Infantile hemangiomas with minimal or arrested growth (IH-MAGs) are characterized by a proliferative component of less than 25% of its surface area. The co-occurrence of IH-MAGs and soft tissue anomalies is rare and case series of this association are lacking. OBJECTIVE: We present ten cases of IH-MAGs associated with soft tissue hypertrophy and describe their clinical features. METHODS: We reviewed all infantile hemangiomas with minimal or arrested growth seen between 2009 to 2016 in the dermatology clinic department at Hospital Santa Creu i Sant Pau, Barcelona...
July 5, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
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