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https://www.readbyqxmd.com/read/29224048/comparison-between-whole-body-and-head-and-neck-neurovascular-coils-for-3-t-magnetic-resonance-proton-resonance-frequency-shift-thermography-guidance-in-the-head-and-neck-region
#1
Daniel Thomas Ginat, Gregory J Anthony, Gregory Christoforidis, Aytekin Oto, Leonard Dalag, Steffen Sammet
The purpose of this study is to compare the image quality of magnetic resonance (MR) treatment planning images and proton resonance frequency (PRF) shift thermography images and inform coil selection for MR-guided laser ablation of tumors in the head and neck region. Laser ablation was performed on an agar phantom and monitored via MR PRF shift thermography on a 3-T scanner, following acquisition of T1-weighted (T1W) planning images. PRF shift thermography images and T2-weighted (T2W) planning images were also performed in the neck region of five normal human volunteers...
December 9, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29223956/residual-risk-of-atherosclerotic-cardiovascular-events-in-relation-to-reductions-in-very-low-density-lipoproteins
#2
Patrick R Lawler, Akintunde O Akinkuolie, Paulo Harada, Robert J Glynn, Daniel I Chasman, Paul M Ridker, Samia Mora
BACKGROUND: It is uncertain whether pharmacological reductions in very-low-density lipoproteins (VLDLs), and their component triglyceride and cholesterol could reduce residual risk of atherosclerotic cardiovascular disease (ASCVD) events among individuals in whom low-density lipoprotein cholesterol (LDL-C) has been adequately lowered. We examined whether individuals with greater on-statin reductions in VLDL-related measures-beyond reductions in LDL-C-were at further reduced risk of ASCVD...
December 9, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29223886/electrocatalytic-co2-reduction-catalyzed-by-nitrogenase-mofe-and-fefe-proteins
#3
Bo Hu, Derek F Harris, Dennis R Dean, T Leo Liu, Zhi-Yong Yang, Lance C Seefeldt
Nitrogenases catalyze biological dinitrogen (N2) reduction to ammonia (NH3), and also reduce a number of non-physiological substrates, including carbon dioxide (CO2) to formate (HCOO-) and methane (CH4). Three versions of nitrogenase are known (Mo-, V-, and Fe-nitrogenase), each showing different reactivities towards various substrates. Normally, electrons for substrate reduction are delivered by the Fe protein component of nitrogenase, with energy coming from the hydrolysis of 2 ATP to 2 ADP+2 Pi for each electron transferred...
December 5, 2017: Bioelectrochemistry
https://www.readbyqxmd.com/read/29223811/predicting-apparent-singlet-oxygen-quantum-yields-of-dissolved-black-carbon-and-humic-substances-using-spectroscopic-indices
#4
Ziyan Du, Yingsheng He, Jianing Fan, Heyun Fu, Shourong Zheng, Zhaoyi Xu, Xiaolei Qu, Ao Kong, Dongqiang Zhu
Dissolved black carbon (DBC) is ubiquitous in aquatic systems, being an important subgroup of the dissolved organic matter (DOM) pool. Nevertheless, its aquatic photoactivity remains largely unknown. In this study, a range of spectroscopic indices of DBC and humic substance (HS) samples were determined using UV-Vis spectroscopy, fluorescence spectroscopy, and proton nuclear magnetic resonance. DBC can be readily differentiated from HS using spectroscopic indices. It has lower average molecular weight, but higher aromaticity and lignin content...
November 30, 2017: Chemosphere
https://www.readbyqxmd.com/read/29223576/uptake-of-iron-iii-ethylenediamine-n-n-n-n-tetraacetic-acid-complex-by-phosphatidylcholine-lipid-film-part-i-effect-of-bulk-ph
#5
Masumi Villeneuve, Mihoko Tanaka, Natsumi Saito, Hiroyasu Sakamoto, Yoshiteru Hayami
We studied a ternary solutes aqueous solution of NaOH, iron (III)-ethylenediamine-N,N,N',N'-tetraacetic acid complex (Fe-edta), and 1,2-diheptanoyl-sn-glycero-3-phosphatidylcholine (DHPC)/air interface system to clarify the interactions between iron complexes and lipids with a phosphatidylcholine head group. The solution surface tension and pH were measured as functions of the total molality of NaOH, Fe-edta and DHPC, and the mole fractions of NaOH and DHPC. Rigorous thermodynamic equations were derived, in which the overall proton dissociation equilibria of Fe-edta and DHPC were taken into consideration, and applied to experimental data to obtain phase diagram of adsorption...
December 6, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/29223574/evaluation-of-the-effects-of-antiepileptic-drugs-on-folic-acid-uptake-by-human-placental-choriocarcinoma-cells
#6
Yuko Kurosawa, Ayako Furugen, Ayako Nishimura, Katsuya Narumi, Masaki Kobayashi, Ken Iseki
Folate status during pregnancy is important for fetal development and health. The placenta plays an important role in supplying the fetus with folate. Most women with epilepsy continue their medication during pregnancy. In the present study, we aimed to evaluate the effects of 16 antiepileptic drugs, clinically used for treatment of epilepsy, on folic acid uptake in two in vitro placental models, BeWo and JEG-3 cells. Short-term exposure to antiepileptic drugs had no effects on [3H]-folic acid uptake by BeWo cells...
December 6, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29223566/progress-in-proton-detected-solid-state-nmr-ssnmr-super-fast-2d-ssnmr-collection-for-nano-mole-scale-proteins
#7
Yoshitaka Ishii, Ayesha Wickramasinghe, Isamu Matsuda, Yuki Endo, Yuji Ishii, Yusuke Nishiyama, Takahiro Nemoto, Takayuki Kamihara
Proton-detected solid-state NMR (SSNMR) spectroscopy has attracted much attention due to its excellent sensitivity and effectiveness in the analysis of trace amounts of amyloid proteins and other important biological systems. In this perspective article, we present the recent sensitivity limit of 1H-detected SSNMR using "ultra-fast" magic-angle spinning (MAS) at a spinning rate (νR) of 80-100 kHz. It was demonstrated that the high sensitivity of 1H-detected SSNMR at νR of 100 kHz and fast recycling using the paramagnetic-assisted condensed data collection (PACC) approach permitted "super-fast" collection of 1H-detected 2D protein SSNMR...
November 28, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/29223443/response-to-pioglitazone-in-patients-with-nonalcoholic-steatohepatitis-with-vs-without-type-2-diabetes
#8
Fernando Bril, Srilaxmi Kalavalapalli, Virginia C Clark, Romina Lomonaco, Consuelo Soldevila-Pico, I-Chia Liu, Beverly Orsak, Fermin Tio, Kenneth Cusi
BACKGROUND & AIMS: Pioglitazone is effective for long-term treatment of patients with nonalcoholic steatohepatitis (NASH) with prediabetes or type-2 diabetes. However, it is not clear how the presence of type-2 diabetes affects the drug's efficacy. We compared metabolic and histologic responses to pioglitazone in patients with NASH and prediabetes vs type-2 diabetes. METHODS: We performed a prospective study of adults with biopsy-proven NASH (52 with type-2 diabetes and 49 with prediabetes), enrolled from the general population of San Antonio, Texas from 2008 through 2014...
December 6, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29222950/tolerance-design-of-patient-specific-range-qa-using-the-dmaic-framework-in-proton-therapy
#9
Jeong-Eun Rah, Dongho Shin, Ryan P Manger, Tae Hyun Kim, Do Hoon Oh, Dae Yong Kim, Gwe-Ya Kim
PURPOSE: To implement the DMAIC (Define-Measure-Analyze-Improve-Control) can be used for customizing the patient-specific QA by designing site-specific range tolerances. METHODS: The DMAIC framework (process flow diagram, cause and effect, Pareto chart, control chart, and capability analysis) were utilized to determine the steps that need focus for improving the patient-specific QA. The patient-specific range QA plans were selected according to 7 treatment site groups, a total of 1437 cases...
December 9, 2017: Medical Physics
https://www.readbyqxmd.com/read/29222395/extracellular-adenosine-stimulates-vacuolar-atpase-dependent-proton-secretion-in-medullary-intercalated-cells
#10
Maria A Battistone, Anil V Nair, Claire R Barton, Rachel N Liberman, Maria A Peralta, Diane E Capen, Dennis Brown, Sylvie Breton
Acidosis is an important complication of AKI and CKD. Renal intercalated cells (ICs) express the proton pumping vacuolar H+-ATPase (V-ATPase) and are extensively involved in acid-base homeostasis. H+ secretion in type A intercalated cells (A-ICs) is regulated by apical vesicle recycling and stimulated by cAMP. In other cell types, cAMP is increased by extracellular agonists, including adenosine, through purinergic receptors. Adenosine is a Food and Drug Administration-approved drug, but very little is known about the effect of adenosine on IC function...
December 8, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29221989/differential-targeting-of-membrane-lipid-domains-by-caffeic-acid-and-its-ester-derivatives
#11
Hugo A L Filipe, Carla Sousa, Joaquim T Marquês, Diogo Vila-Viçosa, António de Granada Flor, Ana S Viana, M Soledade C S Santos, Miguel Machuqueiro, Rodrigo F M de Almeida
Phenolic acids have been associated to a wide range of important health benefits underlain by a common molecular mechanism of action. Considering that significant membrane permeation is prevented by their hydrophilic character, we hypothesize that their main effects result from the interplay with cell membrane surface. This hypothesis was tested using the paradigmatic caffeic acid (CA) and two of its ester derivatives, rosmarinic (RA) and chlorogenic (CGA) acids, for which we predict, based on molecular dynamics simulations, a shallow location in phospholipid bilayers dependent on the protonation-state...
December 5, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29221946/-facing-a-dilemma-in-elderly-complex-and-vulnerable-patients-to-stop-or-not-to-stop-prevention
#12
Laura Llobet Vila, Josep Maria Manresa Domínguez, José Manuel Carmona Segado, Alícia Franzi Sisó, Rosa Vallès Balasch, Isabel Martínez Díaz
OBJECTIVES: 1-To know the preventive prescription (statin, antiplatelet drugs, bisphosphonates, calcium and vitamin D and Vit B12) of elderly patients previously identified as a CCD (with a complex chronic disease) and ACD (with advanced chronic disease and lifetime expectancy of less than 12 months) who died during 2015. 2-To assess the correct indication of Proton Pump Inhibitors (PPI) to determine potentially avoidable medication. DESIGN: Retrospective observational study...
December 5, 2017: Atencion Primaria
https://www.readbyqxmd.com/read/29221868/influence-of-hydrogen-bond-accepting-ability-of-anions-on-the-adsorption-performance-of-ionic-liquid-surface-molecularly-imprinted-polymers
#13
Guifen Zhu, Xia Gao, Xiaolong Wang, Jianji Wang, Jing Fan
To illuminate the influence mechanism of anionic structure of ionic liquids (ILs) on the adsorption performance of surface molecularly imprinted polymers (MIPs), in this work, six newly designed MIPs were prepared on the surface of amino-poly(styrene-divinylbenzene) particles by using imidazolium ILs with the same cation [C4mim]+ but different anions (Cl, CH3SO3, PF6, BF4, C4F7O2, C4F9SO3) as template molecules, methacrylic acid as functional monomer, and ethylene dimethacrylate as cross-linker. The resulting MIP materials were characterized by IR and SEM, and the influence of hydrogen bond accepting ability of anions on the adsorption performance of the MIPs for the ILs was investigated in acetonitrile...
November 26, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29220701/molecular-criteria-for-mutagenesis-by-dna-methylation-some-computational-elucidations
#14
Tejeshwori Salam, S Premila Devi, R H Duncan Lyngdoh
Alkylating agents and N-nitroso compounds are well-known mutagens and carcinogens which act by alkylating DNA at the nucleobase moieties. Criteria for mutagenicity through DNA alkylation include (a) absence of the Watson-Crick (N1-guanine and N3-thymine) protons, (b) rotation of the alkyl group away from the H-bonding zone, (c) configuration of the alkylated base pair close to the Watson-Crick type. This computational study brings together these three molecular criteria for the first time. Three methylated DNA bases-N7-methylguanine, O6-methylguanine and O4-methylthymine-are studied using computational chemical methods...
November 10, 2017: Mutation Research
https://www.readbyqxmd.com/read/29220339/to-flavor-or-not-to-flavor-extemporaneous-omeprazole-liquid
#15
Monica C Chuong, Catherine A Taglieri, Stephen G Kerr
Omeprazole is a proton pump inhibitor used to treat the symptoms of gastro esophageal reflux disease, ulcers, excess stomach acid, infection with Helicobacter pylori, and to control the gastric side effects of various drugs. The approved dosage forms in the U.S. are powder in compounding kits, delayed-release granules for oral suspension, oral delayed-release tablets, and oral delayed-release capsules. An extemporaneously compounded unsweetened oral liquid method, published in the International Journal of Pharmaceutical Compounding, was found to be commonly used by pharmacists...
November 2017: International Journal of Pharmaceutical Compounding
https://www.readbyqxmd.com/read/29220189/plasmon-induced-ultrafast-hydrogen-production-in-liquid-water
#16
Lei Yan, Jiyu Xu, Fangwei Wang, Sheng Meng
Hydrogen gas production from solar water splitting provides a renewable energy cycle to address the grand global energy challenge, however, its dynamics and fundamental mechanism remain elusive. We directly explore by first principles the ultrafast electron-nuclear quantum dynamics on the timescale of ~100 femtoseconds during water photosplitting on plasmonic cluster embedded in liquid water. Water molecule splitting is assisted by rapid proton transport in liquid water in a Grotthuss-like mechanism. We identify that plasmon-induced field enhancement effect dominates water splitting, while charge transfer from gold to anti-bonding orbital of water molecule also plays an important role...
December 8, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29220186/detection-of-co2%C3%A2-in-the-electrochemical-reduction-of-carbon-dioxide-in-dmf-by-scanning-electrochemical-microscopy
#17
Tianhan Kai, Min Zhou, Zhiyao Duan, Graeme A Henkelman, Allen J Bard
The electrocatalytic reduction of CO2 has been studied extensively and produces a number of products. The initial reaction in the CO2 reduction is often taken to be the 1e formation of the radical anion, CO2·. However, the electrochemical detection and characterization of CO2· is challenging because of the short lifetime of CO2·, which can dimerize and react with proton donors and even mild oxidants. Here, we report the generation and quantitative determination of CO2· in N,N-dimethyl formamide (DMF) with the tip generation/substrate collection (TG/SC) mode of scanning electrochemical microscopy (SECM)...
December 8, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29219812/helicobacter-pylori-resistance-in-the-netherlands-a-growing-problem
#18
R Ruiter, H F Wunderink, R A Veenendaal, L G Visser, M G J de Boer
Helicobacter pylori infection is clinically associated with dyspepsia, gastric and duodenal ulcers, and gastric cancer. Increasing antimicrobial resistance in H. pylori is a worldwide problem and failure of eradication with standard triple therapy (high-dose proton pump inhibition, amoxicillin and clarithromycin) is directly related to the presence of a resistant strain. Other treatment combinations have been investigated, but with inconsistent results. Based on a review of the recent literature in conjunction with an analysis of the regional resistance data, we address the increasing complexity of H...
November 2017: Netherlands Journal of Medicine
https://www.readbyqxmd.com/read/29219591/measurement-of-the-vector-and-tensor-asymmetries-at-large-missing-momentum-in-quasielastic-e-over-%C3%A2-e-p-electron-scattering-from-deuterium
#19
A DeGrush, A Maschinot, T Akdogan, R Alarcon, W Bertozzi, E Booth, T Botto, J R Calarco, B Clasie, C Crawford, K Dow, M Farkhondeh, R Fatemi, O Filoti, W Franklin, H Gao, E Geis, S Gilad, D K Hasell, P Karpius, M Kohl, H Kolster, T Lee, J Matthews, K McIlhany, N Meitanis, R Milner, J Rapaport, R Redwine, J Seely, A Shinozaki, A Sindile, S Širca, E Six, T Smith, B Tonguc, C Tschalär, E Tsentalovich, W Turchinetz, Y Xiao, W Xu, Z-L Zhou, V Ziskin, T Zwart
We report the measurement of the beam-vector and tensor asymmetries A_{ed}^{V} and A_{d}^{T} in quasielastic (e[over →],e^{'}p) electrodisintegration of the deuteron at the MIT-Bates Linear Accelerator Center up to missing momentum of 500  MeV/c. Data were collected simultaneously over a momentum transfer range 0.1<Q^{2}<0.5  (GeV/c)^{2} with the Bates Large Acceptance Spectrometer Toroid using an internal deuterium gas target polarized sequentially in both vector and tensor states. The data are compared with calculations...
November 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29219589/observation-of-d-0-meson-decays-to-%C3%AF-%C3%AF-%C3%AE-%C3%AE-and-k-k-%C3%AE-%C3%AE-final-states
#20
R Aaij, B Adeva, M Adinolfi, Z Ajaltouni, S Akar, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, S Ali, G Alkhazov, P Alvarez Cartelle, A A Alves, S Amato, S Amerio, Y Amhis, L An, L Anderlini, G Andreassi, M Andreotti, J E Andrews, R B Appleby, F Archilli, P d'Argent, J Arnau Romeu, A Artamonov, M Artuso, E Aslanides, G Auriemma, M Baalouch, I Babuschkin, S Bachmann, J J Back, A Badalov, C Baesso, S Baker, V Balagura, W Baldini, A Baranov, R J Barlow, C Barschel, S Barsuk, W Barter, F Baryshnikov, V Batozskaya, V Battista, A Bay, L Beaucourt, J Beddow, F Bedeschi, I Bediaga, A Beiter, L J Bel, N Beliy, V Bellee, N Belloli, K Belous, I Belyaev, E Ben-Haim, G Bencivenni, S Benson, S Beranek, A Berezhnoy, R Bernet, D Berninghoff, E Bertholet, A Bertolin, C Betancourt, F Betti, M-O Bettler, M van Beuzekom, Ia Bezshyiko, S Bifani, P Billoir, A Birnkraut, A Bitadze, A Bizzeti, M Bjørn, T Blake, F Blanc, J Blouw, S Blusk, V Bocci, T Boettcher, A Bondar, N Bondar, W Bonivento, I Bordyuzhin, A Borgheresi, S Borghi, M Borisyak, M Borsato, F Bossu, M Boubdir, T J V Bowcock, E Bowen, C Bozzi, S Braun, T Britton, J Brodzicka, D Brundu, E Buchanan, C Burr, A Bursche, J Buytaert, W Byczynski, S Cadeddu, H Cai, R Calabrese, R Calladine, M Calvi, M Calvo Gomez, A Camboni, P Campana, D H Campora Perez, L Capriotti, A Carbone, G Carboni, R Cardinale, A Cardini, P Carniti, L Carson, K Carvalho Akiba, G Casse, L Cassina, L Castillo Garcia, M Cattaneo, G Cavallero, R Cenci, D Chamont, M Charles, Ph Charpentier, G Chatzikonstantinidis, M Chefdeville, S Chen, S F Cheung, S-G Chitic, V Chobanova, M Chrzaszcz, A Chubykin, P Ciambrone, X Cid Vidal, G Ciezarek, P E L Clarke, M Clemencic, H V Cliff, J Closier, J Cogan, E Cogneras, V Cogoni, L Cojocariu, P Collins, T Colombo, A Comerma-Montells, A Contu, A Cook, G Coombs, S Coquereau, G Corti, M Corvo, C M Costa Sobral, B Couturier, G A Cowan, D C Craik, A Crocombe, M Cruz Torres, R Currie, C D'Ambrosio, F Da Cunha Marinho, E Dall'Occo, J Dalseno, A Davis, O De Aguiar Francisco, S De Capua, M De Cian, J M De Miranda, L De Paula, M De Serio, P De Simone, C T Dean, D Decamp, L Del Buono, H-P Dembinski, M Demmer, A Dendek, D Derkach, O Deschamps, F Dettori, B Dey, A Di Canto, P Di Nezza, H Dijkstra, F Dordei, M Dorigo, A Dosil Suárez, L Douglas, A Dovbnya, K Dreimanis, L Dufour, G Dujany, P Durante, R Dzhelyadin, M Dziewiecki, A Dziurda, A Dzyuba, S Easo, M Ebert, U Egede, V Egorychev, S Eidelman, S Eisenhardt, U Eitschberger, R Ekelhof, L Eklund, S Ely, S Esen, H M Evans, T Evans, A Falabella, N Farley, S Farry, R Fay, D Fazzini, L Federici, D Ferguson, G Fernandez, P Fernandez Declara, A Fernandez Prieto, F Ferrari, F Ferreira Rodrigues, M Ferro-Luzzi, S Filippov, R A Fini, M Fiore, M Fiorini, M Firlej, C Fitzpatrick, T Fiutowski, F Fleuret, K Fohl, M Fontana, F Fontanelli, D C Forshaw, R Forty, V Franco Lima, M Frank, C Frei, J Fu, W Funk, E Furfaro, C Färber, E Gabriel, A Gallas Torreira, D Galli, S Gallorini, S Gambetta, M Gandelman, P Gandini, Y Gao, L M Garcia Martin, J García Pardiñas, J Garra Tico, L Garrido, P J Garsed, D Gascon, C Gaspar, L Gavardi, G Gazzoni, D Gerick, E Gersabeck, M Gersabeck, T Gershon, Ph Ghez, S Gianì, V Gibson, O G Girard, L Giubega, K Gizdov, V V Gligorov, D Golubkov, A Golutvin, A Gomes, I V Gorelov, C Gotti, E Govorkova, J P Grabowski, R Graciani Diaz, L A Granado Cardoso, E Graugés, E Graverini, G Graziani, A Grecu, R Greim, P Griffith, L Grillo, L Gruber, B R Gruberg Cazon, O Grünberg, E Gushchin, Yu Guz, T Gys, C Göbel, T Hadavizadeh, C Hadjivasiliou, G Haefeli, C Haen, S C Haines, B Hamilton, X Han, T H Hancock, S Hansmann-Menzemer, N Harnew, S T Harnew, J Harrison, C Hasse, M Hatch, J He, M Hecker, K Heinicke, A Heister, K Hennessy, P Henrard, L Henry, E van Herwijnen, M Heß, A Hicheur, D Hill, C Hombach, P H Hopchev, Z-C Huard, W Hulsbergen, T Humair, M Hushchyn, D Hutchcroft, P Ibis, M Idzik, P Ilten, R Jacobsson, J Jalocha, E Jans, A Jawahery, F Jiang, M John, D Johnson, C R Jones, C Joram, B Jost, N Jurik, S Kandybei, M Karacson, J M Kariuki, S Karodia, N Kazeev, M Kecke, M Kelsey, M Kenzie, T Ketel, E Khairullin, B Khanji, C Khurewathanakul, T Kirn, S Klaver, K Klimaszewski, T Klimkovich, S Koliiev, M Kolpin, I Komarov, R Kopecna, P Koppenburg, A Kosmyntseva, S Kotriakhova, M Kozeiha, M Kreps, P Krokovny, F Kruse, W Krzemien, W Kucewicz, M Kucharczyk, V Kudryavtsev, A K Kuonen, K Kurek, T Kvaratskheliya, D Lacarrere, G Lafferty, A Lai, G Lanfranchi, C Langenbruch, T Latham, C Lazzeroni, R Le Gac, J van Leerdam, A Leflat, J Lefrançois, R Lefèvre, F Lemaitre, E Lemos Cid, O Leroy, T Lesiak, B Leverington, P-R Li, T Li, Y Li, Z Li, T Likhomanenko, R Lindner, F Lionetto, V Lisovskyi, X Liu, D Loh, A Loi, I Longstaff, J H Lopes, D Lucchesi, M Lucio Martinez, H Luo, A Lupato, E Luppi, O Lupton, A Lusiani, X Lyu, F Machefert, F Maciuc, V Macko, P Mackowiak, S Maddrell-Mander, O Maev, K Maguire, D Maisuzenko, M W Majewski, S Malde, A Malinin, T Maltsev, G Manca, G Mancinelli, P Manning, D Marangotto, J Maratas, J F Marchand, U Marconi, C Marin Benito, M Marinangeli, P Marino, J Marks, G Martellotti, M Martin, M Martinelli, D Martinez Santos, F Martinez Vidal, D Martins Tostes, L M Massacrier, A Massafferri, R Matev, A Mathad, Z Mathe, C Matteuzzi, A Mauri, E Maurice, B Maurin, A Mazurov, M McCann, A McNab, R McNulty, J V Mead, B Meadows, C Meaux, F Meier, N Meinert, D Melnychuk, M Merk, A Merli, E Michielin, D A Milanes, E Millard, M-N Minard, L Minzoni, D S Mitzel, A Mogini, J Molina Rodriguez, T Mombacher, I A Monroy, S Monteil, M Morandin, M J Morello, O Morgunova, J Moron, A B Morris, R Mountain, F Muheim, M Mulder, D Müller, J Müller, K Müller, V Müller, P Naik, T Nakada, R Nandakumar, A Nandi, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, M Neuner, T D Nguyen, C Nguyen-Mau, S Nieswand, R Niet, N Nikitin, T Nikodem, A Nogay, D P O'Hanlon, A Oblakowska-Mucha, V Obraztsov, S Ogilvy, R Oldeman, C J G Onderwater, A Ossowska, J M Otalora Goicochea, P Owen, A Oyanguren, P R Pais, A Palano, M Palutan, A Papanestis, M Pappagallo, L L Pappalardo, W Parker, C Parkes, G Passaleva, A Pastore, M Patel, C Patrignani, A Pearce, A Pellegrino, G Penso, M Pepe Altarelli, S Perazzini, P Perret, L Pescatore, K Petridis, A Petrolini, A Petrov, M Petruzzo, E Picatoste Olloqui, B Pietrzyk, M Pikies, D Pinci, A Pistone, A Piucci, V Placinta, S Playfer, M Plo Casasus, F Polci, M Poli Lener, A Poluektov, I Polyakov, E Polycarpo, G J Pomery, S Ponce, A Popov, D Popov, S Poslavskii, C Potterat, E Price, J Prisciandaro, C Prouve, V Pugatch, A Puig Navarro, H Pullen, G Punzi, W Qian, R Quagliani, B Quintana, B Rachwal, J H Rademacker, M Rama, M Ramos Pernas, M S Rangel, I Raniuk, F Ratnikov, G Raven, M Ravonel Salzgeber, M Reboud, F Redi, S Reichert, A C Dos Reis, C Remon Alepuz, V Renaudin, S Ricciardi, S Richards, M Rihl, K Rinnert, V Rives Molina, P Robbe, A Robert, A B Rodrigues, E Rodrigues, J A Rodriguez Lopez, P Rodriguez Perez, A Rogozhnikov, S Roiser, A Rollings, V Romanovskiy, A Romero Vidal, J W Ronayne, M Rotondo, M S Rudolph, T Ruf, P Ruiz Valls, J Ruiz Vidal, J J Saborido Silva, E Sadykhov, N Sagidova, B Saitta, V Salustino Guimaraes, C Sanchez Mayordomo, B Sanmartin Sedes, R Santacesaria, C Santamarina Rios, M Santimaria, E Santovetti, G Sarpis, A Sarti, C Satriano, A Satta, D M Saunders, D Savrina, S Schael, M Schellenberg, M Schiller, H Schindler, M Schlupp, M Schmelling, T Schmelzer, B Schmidt, O Schneider, A Schopper, H F Schreiner, K Schubert, M Schubiger, M-H Schune, R Schwemmer, B Sciascia, A Sciubba, A Semennikov, A Sergi, N Serra, J Serrano, L Sestini, P Seyfert, M Shapkin, I Shapoval, Y Shcheglov, T Shears, L Shekhtman, V Shevchenko, B G Siddi, R Silva Coutinho, L Silva de Oliveira, G Simi, S Simone, M Sirendi, N Skidmore, T Skwarnicki, E Smith, I T Smith, J Smith, M Smith, L Soares Lavra, M D Sokoloff, F J P Soler, B Souza De Paula, B Spaan, P Spradlin, S Sridharan, F Stagni, M Stahl, S Stahl, P Stefko, S Stefkova, O Steinkamp, S Stemmle, O Stenyakin, M Stepanova, H Stevens, S Stone, B Storaci, S Stracka, M E Stramaglia, M Straticiuc, U Straumann, L Sun, W Sutcliffe, K Swientek, V Syropoulos, M Szczekowski, T Szumlak, M Szymanski, S T'Jampens, A Tayduganov, T Tekampe, G Tellarini, F Teubert, E Thomas, J van Tilburg, M J Tilley, V Tisserand, M Tobin, S Tolk, L Tomassetti, D Tonelli, F Toriello, R Tourinho Jadallah Aoude, E Tournefier, M Traill, M T Tran, M Tresch, A Trisovic, A Tsaregorodtsev, P Tsopelas, A Tully, N Tuning, A Ukleja, A Usachov, A Ustyuzhanin, U Uwer, C Vacca, A Vagner, V Vagnoni, A Valassi, S Valat, G Valenti, R Vazquez Gomez, P Vazquez Regueiro, S Vecchi, M van Veghel, J J Velthuis, M Veltri, G Veneziano, A Venkateswaran, T A Verlage, M Vernet, M Vesterinen, J V Viana Barbosa, B Viaud, D Vieira, M Vieites Diaz, H Viemann, X Vilasis-Cardona, M Vitti, V Volkov, A Vollhardt, B Voneki, A Vorobyev, V Vorobyev, 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The first observation of the D^{0}→π^{+}π^{-}μ^{+}μ^{-} and D^{0}→K^{+}K^{-}μ^{+}μ^{-} decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2  fb^{-1} of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D^{0}→K^{-}π^{+}[μ^{+}μ^{-}]_{ρ^{0}/ω}, where the two muons are consistent with coming from the decay of a ρ^{0} or ω meson. The results are B(D^{0}→π^{+}π^{-}μ^{+}μ^{-})=(9...
November 3, 2017: Physical Review Letters
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