Radius expansion bursts from the neutron star transient XTE J1701-462; a new distance estimate

NARCIS (Netherlands)

Lin, D.; Homan, J.; Remillard, R.; Wijnands, R.

2007-01-01

A detailed spectral analysis of the second and third type-I X- ray bursts from the neutron star transient XTE J1701-462 (detected on July 20 and July 25, see also ATel #1165) reveals clear photospheric radius expansion in both of them. The bursts show radius expansion for about 2-3 seconds, with the

Puzzling thermonuclear burst behaviour from the transient low-mass X-ray binary IGR J17473-2721

DEFF Research Database (Denmark)

Chenevez, Jérôme

2010-01-01

We investigate the thermonuclear bursting behaviour of IGR J17473-2721, an X-ray transient that in 2008 underwent a six month long outburst, starting (unusually) with an X-ray burst. We detected a total of 57 thermonuclear bursts throughout the outburst with AGILE, Swift, RXTE, and INTEGRAL...... it dropped (at a persistent flux corresponding to 15%of m˙ Edd) a few days before the outburst peak, after which bursts were not detected for a month. As the persistent emission subsequently decreased, the bursting activity resumed at a much lower rate than during the outburst rise. This hysteresis may arise...... produced a similar quenching of burst activity....

Transient radiation effects in D.O.I. optical materials: Schott filter glass

International Nuclear Information System (INIS)

Simmons-Potter, K.

1998-07-01

Department of Energy and Defense Programs systems are becoming increasingly reliant on the use of optical technologies that must perform under a range of ionizing radiation environments. In particular, the radiation response of materials under consideration for applications in direct optical initiation (D.O.I.) schemes must be well characterized. In this report, transient radiation effects observed in Schott filter glass S-7010 are characterized. Under gamma exposure with 2 MeV photons in a 20--30 nsec pulse, the authors observe strong initial induced fluorescence in the red region of the spectrum followed by significant induced absorption over the same spectral region. Peak induced absorption coefficients of 0.113 cm -1 and 0.088 cm -1 were calculated at 800 nm and 660 nm respectively

Photoionization cross section of the 4p55d[7/2] J=4 state and radiative lifetimes of three states of Kr I

International Nuclear Information System (INIS)

Cannon, B.D.; Glab, W.L.; Ogorzalek-Loo, R.

1993-01-01

Three states in Kr I were studied in a pure Kr discharge at pressures ≤15 mTorr. Two-photon excitation from the metastable 4p 5 5s[3/2] J=2 state produced the 4p 5 5d[7/2] J=4 state whose photoionization cross section and lifetime were measured. The photoionization cross section at λ=1064 nm is 32±5 Mb, and the radiative lifetime is 142±12 ns. One-photon excitation produced the 4p 5 5p[5/2] J=2 and J=3 states of Kr I, whose radiative lifetimes were measured. In contrast to previous lifetime measurements of these two 5p states, this work used both state-specific excitation and low pressures. The pressures were low enough that collisional transfer between these two states was negligible. In a very clean 8-mm-diam cell, the 5p[5/2] J=3 lifetime increased with Kr pressure. This increase is attributed to radiation trapping on the 5s[3/2] J=2 to 5p[5/2] J=3 transition. This radiation trapping by the metastable first excited state of Kr I was observed in a pure Kr discharge at pressures below 4 mTorr

Using Rising Limb Analysis to Estimate Uptake of Reactive Solutes in Advective and Transient Storage Sub-compartments of Stream Ecosystems

Science.gov (United States)

Thomas, S. A.; Valett, H.; Webster, J. R.; Mulholland, P. J.; Dahm, C. N.

2001-12-01

Identifying the locations and controls governing solute uptake is a recent area of focus in studies of stream biogeochemistry. We introduce a technique, rising limb analysis (RLA), to estimate areal nitrate uptake in the advective and transient storage (TS) zones of streams. RLA is an inverse approach that combines nutrient spiraling and transient storage modeling to calculate total uptake of reactive solutes and the fraction of uptake occurring within the advective sub-compartment of streams. The contribution of the transient storage zones to solute loss is determined by difference. Twelve-hour coinjections of conservative (Cl-) and reactive (15NO3) tracers were conducted seasonally in several headwater streams among which AS/A ranged from 0.01 - 2.0. TS characteristics were determined using an advection-dispersion model modified to include hydrologic exchange with a transient storage compartment. Whole-system uptake was determined by fitting the longitudinal pattern of NO3 to first-order, exponential decay model. Uptake in the advective sub-compartment was determined by collecting a temporal sequence of samples from a single location beginning with the arrival of the solute front and concluding with the onset of plateau conditions (i.e. the rising limb). Across the rising limb, 15NO3:Cl was regressed against the percentage of water that had resided in the transient storage zone (calculated from the TS modeling). The y-intercept thus provides an estimate of the plateau 15NO3:Cl ratio in the absence of NO3 uptake within the transient storage zone. Algebraic expressions were used to calculate the percentage of NO3 uptake occurring in the advective and transient storage sub-compartments. Application of RLA successfully estimated uptake coefficients for NO3 in the subsurface when the physical dimensions of that habitat were substantial (AS/A > 0.2) and when plateau conditions at the sampling location consisted of waters in which at least 25% had resided in the

Preparation and characterization of Eosin B- and Erythrosin J-sensitized nanostructured NiO thin film photocathodes

Energy Technology Data Exchange (ETDEWEB)

Vera, F. [Instituto de Quimica, Universidad Catolica de Valparaiso, Valparaiso (Chile); Schrebler, R. [Instituto de Quimica, Universidad Catolica de Valparaiso, Valparaiso (Chile); Munoz, E. [Instituto de Quimica, Universidad Catolica de Valparaiso, Valparaiso (Chile); Suarez, C. [Instituto de Quimica, Universidad Catolica de Valparaiso, Valparaiso (Chile); Cury, P. [Instituto de Quimica, Universidad Catolica de Valparaiso, Valparaiso (Chile); Gomez, H. [Instituto de Quimica, Universidad Catolica de Valparaiso, Valparaiso (Chile); Cordova, R. [Instituto de Quimica, Universidad Catolica de Valparaiso, Valparaiso (Chile); Marotti, R.E. [Instituto de Fisica, Facultad de Ingenieria, Universidad de la Republica, Herrera y Reissig 565, C.C. 30, 11000 Montevideo (Uruguay); Dalchiele, E.A. [Instituto de Fisica, Facultad de Ingenieria, Universidad de la Republica, Herrera y Reissig 565, C.C. 30, 11000 Montevideo (Uruguay)]. E-mail: dalchiel@fing.edu.uy

2005-11-01

Nickel oxide (NiO) thin films were prepared onto ITO/glass substrates by spin-coating, dipping and electrochemically. Studies of the morphological and structural properties of the films were done by atomic force microscopy (AFM). Photoelectrochemical and optical experiments were carried out in order to characterize the semiconductor properties of the nanostructured NiO thin films. The experiments were also done for Eosin B- and Erythrosin J-sensitized nanostructured NiO films, with the aim to visualize their potential application as photocatodes in tandem dye-sensitized solar cells (TDSSC). The NiO grown by dipping was the one presenting the best morphological properties. The photoelectrochemical results for all the bare NiO, NiO-Eosin B and NiO-Erythrosin J/electrolyte (I{sub 2}/I{sup -}) systems showed a p-type behavior. An enhancement in the photocurrent has been observed for the systems sensitized with the dyes. For the NiO/Erythrosin J system the enhancement of the current under illumination in comparison to the dark current was about 200%.

Preparation and characterization of Eosin B- and Erythrosin J-sensitized nanostructured NiO thin film photocathodes

International Nuclear Information System (INIS)

Vera, F.; Schrebler, R.; Munoz, E.; Suarez, C.; Cury, P.; Gomez, H.; Cordova, R.; Marotti, R.E.; Dalchiele, E.A.

2005-01-01

Nickel oxide (NiO) thin films were prepared onto ITO/glass substrates by spin-coating, dipping and electrochemically. Studies of the morphological and structural properties of the films were done by atomic force microscopy (AFM). Photoelectrochemical and optical experiments were carried out in order to characterize the semiconductor properties of the nanostructured NiO thin films. The experiments were also done for Eosin B- and Erythrosin J-sensitized nanostructured NiO films, with the aim to visualize their potential application as photocatodes in tandem dye-sensitized solar cells (TDSSC). The NiO grown by dipping was the one presenting the best morphological properties. The photoelectrochemical results for all the bare NiO, NiO-Eosin B and NiO-Erythrosin J/electrolyte (I 2 /I - ) systems showed a p-type behavior. An enhancement in the photocurrent has been observed for the systems sensitized with the dyes. For the NiO/Erythrosin J system the enhancement of the current under illumination in comparison to the dark current was about 200%

INTEGRAL finds renewed X-ray activity of the Neutron star X-ray transient SAX J1750.8-2900

DEFF Research Database (Denmark)

Sanchez-Fernandez, Celia; Chenevez, Jérôme; Kuulkers, Erik

2015-01-01

INTEGRAL Galactic bulge monitoring observations (ATel #438) on UT 13 September 2015 18:50-22:32 reveal renewed X-ray activity from the low-mass X-ray binary transient and Type I X-ray burster SAX J1750.8-2900 (IAU Circ. #6597). The last outburst from this source was reported in 2011 (ATels #3170,...

P(o-chlorophenol–co-o-hydroxyphenol: kinetic formation studies and pH-sensor application

Directory of Open Access Journals (Sweden)

Said M. Sayyah

2017-03-01

Full Text Available Electrochemical copolymerization of o-chlorophenol (o-ClPh with o-hydroxyphenol (o-HOPh was conducted in aqueous H2SO4 using cyclic voltammetry technique at the Pt electrode. The reaction rate was found to be of the second order in the monomer concentration and first order in the acid concentration. The activation energy, enthalpy, and entropy for the copolymerization were found to be 20.20 kJ mol-1, 19.24 kJ mol-1 and -281.47 J K-1 mol-1, respectively. The obtained copolymer films show smooth feature with amorphous nature. Copolymer films adhere Pt electrode very well and show less reactivity in the H2SO4 medium. The pH sensitivity of the poly(oClPh-co-HOPh-modified electrode has been investigated potentiometrically using different polymer thicknesses. The potentiometric responses to pH change of the poly(oClPh-co-HOPh-modified electrode appeared reversible and linear in the range from pH 2-11 with a maximum sub-Nernstian potentiometric response slope of 40.7 mV/pH (30 °C. The slope became close to 56.2 mV/pH in the range from pH 4 to 9 at (30 °C. The poly(oClPh-co-HOPh-modified electrode readily responded to pH change but was not stable with time.

Discovery and Orbital Determination of the Transient X-Ray Pulsar GRO J1750-27

Science.gov (United States)

Scott, D. M.; Finger, M. H.; Wilson, R. B.; Koh, D. T.; Prince, T. A.; Vaughan, B. A.; Chakrabarty, D.

1997-01-01

We report on the discovery and hard X-ray (20 - 70 keV) observations of the 4.45 s period transient X-ray pulsar GRO J1750-27 with the BATSE all-sky monitor on board CGRO. A relatively faint out- burst (less than 30 mcrab peak) lasting at least 60 days was observed during which the spin-up rate peaked at 38 pHz/s and was correlated with the pulsed intensity. An orbit with a period of 29.8 days was found. The large spin-up rate, spin period, and orbital period together suggest that accretion is occurring from a disk and that the outburst is a "giant" outburst typical of a Be/X-ray transient system. No optical counterpart has yet been reported.

76 FR 53964 - Dale J. Bingham, P.A.; Revocation of Registration

Science.gov (United States)

2011-08-30

... DEPARTMENT OF JUSTICE Drug Enforcement Administration Dale J. Bingham, P.A.; Revocation of... Enforcement Administration, issued an Order to Show Cause to Dale J. Bingham, P.A. (Registrant), of Ash Fork... 28 CFR 0.100(b), I order that DEA Certificate of Registration MB1048746, issued to Dale J. Bingham, P...

The new X-ray transient Swift J174805.3-244637 in Terzan 5 is a neutron star LMXB

NARCIS (Netherlands)

Altamirano, D.; Wijnands, R.; Heinke, C.O.; Sivakoff, G.R.; Pooley, D.

2012-01-01

We report on the ongoing monitoring Swift observations of the X-ray transient Swift J174805.3-244637 (ATEL #4249, #4242) in the globular cluster Terzan 5. During an observation taken on July 17th, 2012, we detect a Type-I X-ray burst in a ~950 seconds long observation which started at 20:54:00 UT.

Searches for $B^0_{(s)} \\to J/\\psi p\\bar{p}$ and $B^+ \\to J/\\psi p\\bar{p}\\pi^+$ decays

CERN Document Server

INSPIRE-00258707; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Alvarez Cartelle, P; Alves Jr, A A; Amato, S; Amerio, S; Amhis, Y; Anderlini, L; Anderson, J; Andreassen, R; Andrews, J E; Appleby, R B; Aquines Gutierrez, O; Archilli, F; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bachmann, S; Back, J J; Baesso, C; Balagura, V; Baldini, W; Barlow, R J; Barschel, C; Barsuk, S; Barter, W; Bauer, Th; Bay, A; Beddow, J; Bedeschi, F; Bediaga, I; Belogurov, S; Belous, K; Belyaev, I; Ben-Haim, E; Bencivenni, G; Benson, S; Benton, J; Berezhnoy, A; Bernet, R; Bettler, M -O; van Beuzekom, M; Bien, A; Bifani, S; Bird, T; Bizzeti, A; Bjørnstad, P M; Blake, T; Blanc, F; Blouw, J; Blusk, S; Bocci, V; Bondar, A; Bondar, N; Bonivento, W; Borghi, S; Borgia, A; Bowcock, T J V; Bowen, E; Bozzi, C; Brambach, T; van den Brand, J; Bressieux, J; Brett, D; Britsch, M; Britton, T; Brook, N H; Brown, H; Burducea, I; Bursche, A; Busetto, G; Buytaert, J; Cadeddu, S; Callot, O; Calvi, M; Calvo Gomez, M; Camboni, A; Campana, P; Campora Perez, D; Carbone, A; Carboni, G; Cardinale, R; Cardini, A; Carranza-Mejia, H; Carson, L; Carvalho Akiba, K; Casse, G; Castillo Garcia, L; Cattaneo, M; Cauet, Ch; Cenci, R; Charles, M; Charpentier, Ph; Chen, P; Chiapolini, N; Chrzaszcz, M; Ciba, K; Cid Vidal, X; Ciezarek, G; Clarke, P E L; Clemencic, M; Cliff, H V; Closier, J; Coca, C; Coco, V; Cogan, J; Cogneras, E; Collins, P; Comerma-Montells, A; Contu, A; Cook, A; Coombes, M; Coquereau, S; Corti, G; Couturier, B; Cowan, G A; Craik, D C; Cunliffe, S; Currie, R; D'Ambrosio, C; David, P; David, P N Y; Davis, A; De Bonis, I; De Bruyn, K; De Capua, S; De Cian, M; De Miranda, J M; De Paula, L; De Silva, W; De Simone, P; Decamp, D; Deckenhoff, M; Del Buono, L; Déléage, N; Derkach, D; Deschamps, O; Dettori, F; Di Canto, A; Di Ruscio, F; Dijkstra, H; Dogaru, M; Donleavy, S; Dordei, F; Dosil Suárez, A; Dossett, D; Dovbnya, A; Dupertuis, F; Durante, P; Dzhelyadin, R; Dziurda, A; Dzyuba, A; Easo, S; Egede, U; Egorychev, V; Eidelman, S; van Eijk, D; Eisenhardt, S; Eitschberger, U; Ekelhof, R; Eklund, L; El Rifai, I; Elsasser, Ch; Falabella, A; Färber, C; Fardell, G; Farinelli, C; Farry, S; Fave, V; Ferguson, D; Fernandez Albor, V; Ferreira Rodrigues, F; Ferro-Luzzi, M; Filippov, S; Fiore, M; Fitzpatrick, C; Fontana, M; Fontanelli, F; Forty, R; Francisco, O; Frank, M; Frei, C; Frosini, M; Furcas, S; Furfaro, E; Gallas Torreira, A; Galli, D; Gandelman, M; Gandini, P; Gao, Y; Garofoli, J; Garosi, P; Garra Tico, J; Garrido, L; Gaspar, C; Gauld, R; Gersabeck, E; Gersabeck, M; Gershon, T; Ghez, Ph; Gibson, V; Giubega, L; Gligorov, V V; Göbel, C; Golubkov, D; Golutvin, A; Gomes, A; Gordon, H; Grabalosa Gándara, M; Graciani Diaz, R; Granado Cardoso, L A; Graugés, E; Graziani, G; Grecu, A; Greening, E; Gregson, S; Griffith, P; Grünberg, O; Gui, B; Gushchin, E; Guz, Yu; Gys, T; Hadjivasiliou, C; Haefeli, G; Haen, C; Haines, S C; Hall, S; Hamilton, B; Hampson, T; Hansmann-Menzemer, S; Harnew, N; Harnew, S T; Harrison, J; Hartmann, T; He, J; Head, T; Heijne, V; Hennessy, K; Henrard, P; Hernando Morata, J A; van Herwijnen, E; Hicheur, A; Hicks, E; Hill, D; Hoballah, M; Holtrop, M; Hombach, C; Hopchev, P; Hulsbergen, W; Hunt, P; Huse, T; Hussain, N; Hutchcroft, D; Hynds, D; Iakovenko, V; Idzik, M; Ilten, P; Jacobsson, R; Jaeger, A; Jans, E; Jaton, P; Jawahery, A; Jing, F; John, M; Johnson, D; Jones, C R; Joram, C; Jost, B; Kaballo, M; Kandybei, S; Kanso, W; Karacson, M; Karbach, T M; Kenyon, I R; Ketel, T; Keune, A; Khanji, B; Kochebina, O; Komarov, I; Koopman, R F; Koppenburg, P; Korolev, M; Kozlinskiy, A; Kravchuk, L; Kreplin, K; Kreps, M; Krocker, G; Krokovny, P; Kruse, F; Kucharczyk, M; Kudryavtsev, V; Kvaratskheliya, T; La Thi, V N; Lacarrere, D; Lafferty, G; Lai, A; Lambert, D; Lambert, R W; Lanciotti, E; Lanfranchi, G; Langenbruch, C; Latham, T; Lazzeroni, C; Le Gac, R; van Leerdam, J; Lees, J -P; Lefèvre, R; Leflat, A; Lefrançois, J; Leo, S; Leroy, O; Lesiak, T; Leverington, B; Li, Y; Li Gioi, L; Liles, M; Lindner, R; Linn, C; Liu, B; Liu, G; Lohn, S; Longstaff, I; Lopes, J H; Lopez-March, N; Lu, H; Lucchesi, D; Luisier, J; Luo, H; Machefert, F; Machikhiliyan, I V; Maciuc, F; Maev, O; Malde, S; Manca, G; Mancinelli, G; Maratas, J; Marconi, U; Marino, P; Märki, R; Marks, J; Martellotti, G; Martens, A; Martín Sánchez, A; Martinelli, M; Martinez Santos, D; Martins Tostes, D; Massafferri, A; Matev, R; Mathe, Z; Matteuzzi, C; Maurice, E; Mazurov, A; Mc Skelly, B; McCarthy, J; McNab, A; McNulty, R; Meadows, B; Meier, F; Meissner, M; Merk, M; Milanes, D A; Minard, M -N; Molina Rodriguez, J; Monteil, S; Moran, D; Morawski, P; Mordà, A; Morello, M J; Mountain, R; Mous, I; Muheim, F; Müller, K; Muresan, R; Muryn, B; Muster, B; Naik, P; Nakada, T; Nandakumar, R; Nasteva, I; Needham, M; Neubert, S; Neufeld, N; Nguyen, A D; Nguyen, T D; Nguyen-Mau, C; Nicol, M; Niess, V; Niet, R; Nikitin, N; Nikodem, T; Nomerotski, A; Novoselov, A; Oblakowska-Mucha, A; Obraztsov, V; Oggero, S; Ogilvy, S; Okhrimenko, O; Oldeman, R; Orlandea, M; Otalora Goicochea, J M; Owen, P; Oyanguren, A; Pal, B K; Palano, A; Palutan, M; Panman, J; Papanestis, A; Pappagallo, M; Parkes, C; Parkinson, C J; Passaleva, G; Patel, G D; Patel, M; Patrick, G N; Patrignani, C; Pavel-Nicorescu, C; Pazos Alvarez, A; Pellegrino, A; Penso, G; Pepe Altarelli, M; Perazzini, S; Perez Trigo, E; Pérez-Calero Yzquierdo, A; Perret, P; Perrin-Terrin, M; Pescatore, L; Pessina, G; Petridis, K; Petrolini, A; Phan, A; Picatoste Olloqui, E; Pietrzyk, B; Pilař, T; Pinci, D; Playfer, S; Plo Casasus, M; Polci, F; Polok, G; Poluektov, A; Polycarpo, E; Popov, A; Popov, D; Popovici, B; Potterat, C; Powell, A; Prisciandaro, J; Pritchard, A; Prouve, C; Pugatch, V; Puig Navarro, A; Punzi, G; Qian, W; Rademacker, J H; Rakotomiaramanana, B; Rangel, M S; Raniuk, I; Rauschmayr, N; Raven, G; Redford, S; Reid, M M; dos Reis, A C; Ricciardi, S; Richards, A; Rinnert, K; Rives Molina, V; Roa Romero, D A; Robbe, P; Roberts, D A; Rodrigues, E; Rodriguez Perez, P; Roiser, S; Romanovsky, V; Romero Vidal, A; Rouvinet, J; Ruf, T; Ruffini, F; Ruiz, H; Ruiz Valls, P; Sabatino, G; Saborido Silva, J J; Sagidova, N; Sail, P; Saitta, B; Salustino Guimaraes, V; Salzmann, C; Sanmartin Sedes, B; Sannino, M; Santacesaria, R; Santamarina Rios, C; Santovetti, E; Sapunov, M; Sarti, A; Satriano, C; Satta, A; Savrie, M; Savrina, D; Schaack, P; Schiller, M; Schindler, H; Schlupp, M; Schmelling, M; Schmidt, B; Schneider, O; Schopper, A; Schune, M -H; Schwemmer, R; Sciascia, B; Sciubba, A; Seco, M; Semennikov, A; Sepp, I; Serra, N; Serrano, J; Seyfert, P; Shapkin, M; Shapoval, I; Shatalov, P; Shcheglov, Y; Shears, T; Shekhtman, L; Shevchenko, O; Shevchenko, V; Shires, A; Silva Coutinho, R; Sirendi, M; Skwarnicki, T; Smith, N A; Smith, E; Smith, J; Smith, M; Sokoloff, M D; Soler, F J P; Soomro, F; Souza, D; Souza De Paula, B; Spaan, B; Sparkes, A; Spradlin, P; Stagni, F; Stahl, S; Steinkamp, O; Stoica, S; Stone, S; Storaci, B; Straticiuc, M; Straumann, U; Subbiah, V K; Sun, L; Swientek, S; Syropoulos, V; Szczekowski, M; Szczypka, P; Szumlak, T; T'Jampens, S; Teklishyn, M; Teodorescu, E; Teubert, F; Thomas, C; Thomas, E; van Tilburg, J; Tisserand, V; Tobin, M; Tolk, S; Tonelli, D; Topp-Joergensen, S; Torr, N; Tournefier, E; Tourneur, S; Tran, M T; Tresch, M; Tsaregorodtsev, A; Tsopelas, P; Tuning, N; Ubeda Garcia, M; Ukleja, A; Urner, D; Ustyuzhanin, A; Uwer, U; Vagnoni, V; Valenti, G; Vallier, A; Van Dijk, M; Vazquez Gomez, R; Vazquez Regueiro, P; Vázquez Sierra, C; Vecchi, S; Velthuis, J J; Veltri, M; Veneziano, G; Vesterinen, M; Viaud, B; Vieira, D; Vilasis-Cardona, X; Vollhardt, A; Volyanskyy, D; Voong, D; Vorobyev, A; Vorobyev, V; Voß, C; Voss, H; Waldi, R; Wallace, C; Wallace, R; Wandernoth, S; Wang, J; Ward, D R; Watson, N K; Webber, A D; Websdale, D; Whitehead, M; Wicht, J; Wiechczynski, J; Wiedner, D; Wiggers, L; Wilkinson, G; Williams, M P; Williams, M; Wilson, F F; Wimberley, J; Wishahi, J; Witek, M; Wotton, S A; Wright, S; Wu, S; Wyllie, K; Xie, Y; Xing, Z; Yang, Z; Young, R; Yuan, X; Yushchenko, O; Zangoli, M; Zavertyaev, M; Zhang, F; Zhang, L; Zhang, W C; Zhang, Y; Zhelezov, A; Zhokhov, A; Zhong, L; Zvyagin, A

2013-01-01

The results of searches for $B^0_{(s)} \\to J/\\psi p\\bar{p}$ and $B^+ \\to J/\\psi p\\bar{p}\\pi^+$ decays are reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb$^{-1}$ of $pp$ collisions, collected with the LHCb detector. An excess with 2.8 $\\sigma$ significance is seen for the decay $B^0_{s} \\to J/\\psi p\\bar{p}$ and an upper limit on the branching fraction is set at the 90% confidence level: $B(B^0_s \\to J/\\psi p\\bar{p}) \\lt$ 4.8 x 10$^{-6}$, which is the first such limit. No significant signals are seen for $B^0 \\to J/\\psi p\\bar{p}$ and $B^+ \\to J/\\psi p\\bar{p}\\pi^+$ decays, for which the corresponding limits are set: $B(B^0 \\to J/\\psi p\\bar{p}) \\lt$ 5.2 x 10$^{-7}$, which significantly improves the existing limit; and $B(B^+ \\to J/\\psi p\\bar{p}\\pi^+) \\lt$ 5.0 x 10$^{-7}$, which is the first limit on this branching fraction.

High J{sub c} YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} Films via Rapid, Low pO{sub 2} Pyrolysis

Energy Technology Data Exchange (ETDEWEB)

DAWLEY,JEFFREY T.; CLEM,PAUL G.; SIEGAL,MICHAEL P.; OVERMYER,DONALD L.

2000-09-21

In this investigation, YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} (YBCO) films were fabricated via a metal acetate, trifluoroacetic acid based sol-gel route, and spin-coat deposited on (100) LaAlO{sub 3} with a focus on maximizing J{sub c}, while minimizing processing time. We demonstrate that the use of a low pO{sub 2} atmosphere during the pyrolysis stage can lead to at least a tetiold reduction in pyrolysis time, compared to a 1 atm. O{sub 2} ambient. High-quality YBCO films on LaAlO{sub 3}, with J{sub c} values up to 3 MA/cm{sup 2} at 77 K, can be routinely crystallized from these rapidly pyrolyzed films.

Stochastic simulation of a single inositol 1,4,5-trisphosphate-sensitive Ca2+ channel reveals repetitive openings during 'blip-like' Ca2+ transients.

Science.gov (United States)

Swillens, S; Champeil, P; Combettes, L; Dupont, G

1998-05-01

Confocal microscope studies with fluorescent dyes of inositol 1,4,5-trisphosphate (InsP3)-induced intracellular Ca2+ mobilization recently established the existence of 'elementary' events, dependent on the activity of individual InsP3-sensitive Ca2+ channels. In the present work, we try by theoretical stochastic simulation to explain the smallest signals observed in those studies, which were referred to as Ca2+ 'blips' [Parker I., Yao Y. Ca2+ transients associated with openings of inositol trisphosphate-gated channels in Xenopus oocytes. J Physiol Lond 1996; 491: 663-668]. For this purpose, we assumed a simple molecular model for the InsP3-sensitive Ca2+ channel and defined a set of parameter values accounting for the results obtained in electrophysiological bilayer experiments [Bezprozvanny I., Watras J., Ehrlich B.E. Bell-shaped calcium-response curves of Ins(1,4,5)P3- and calcium-gated channels from endoplasmic reticulum of cerebellum. Nature 1991; 351: 751-754; Bezprozvanny I., Ehrlich B.E. Inositol (1,4,5)-trisphosphate (InsP3)-gated Ca channels from cerebellum: conduction properties for divalent cations and regulation by intraluminal calcium. J Gen Physiol 1994; 104: 821-856]. With a stochastic procedure which considered cytosolic Ca2+ diffusion explicitly, we then simulated the behaviour of a single channel, placed in a realistic physiological environment. An attractive result was that the simulated channel exhibited bursts of activity, arising from repetitive channel openings, which were responsible for transient rises in Ca2+ concentration and were reminiscent of the relatively long-duration experimental Ca2+ blips. The influence of the values chosen for the various parameters (affinity and diffusion coefficient of the buffers, luminal Ca2+ concentration) on the kinetic characteristics of these theoretical blips is analyzed.

Discovery of a Transient Magnetar: XTE J1810-197

Science.gov (United States)

Ibrahim, Alaa I.; Markwardt, Craig B.; Swank, Jean H.; Ransom, Scott; Roberts, Mallory; Kaspi, Victoria; Woods, Peter M.; Safi-Harb, Samar; Balman, Solen; Parke, William C.

2004-01-01

We report the discovery of a new X-ray pulsar, XTE J1810-197, that was serendipitously discovered on 2003 July 15 by the Rossi X-Ray Timing Explorer (RXTE) while observing the soft gamma repeater SGR 1806-20. The pulsar has a 5.54 s spin period, a soft X-ray spectrum (with a photon index of approx. = 4). and is detectable in earlier RXTE observations back to 2003 January but not before. These show that a transient outburst began between 2002 November 17 and 2003 January 23 and that the source's persistent X-ray flux has been declining since then. The pulsar exhibits a high spin-down rate P approx.= l0(exp -11) s/s with no evidence of Doppler shifts due to a binary companion. The rapid spin-down rate and slow spin period imply a supercritical characteristic magnetic field B approx. = 3 x l0(exp 14) G and a young age tau less than or = 7600 yr. Follow-up Chandra observations provided an accurate position of the source. Within its error radius, the 1.5 m Russian-Turkish Optical Telescope found a limiting magnitude R(sub c) = 21.5. All such properties are strikingly similar to those of anomalous X-ray pulsars ad soft gamma repeaters, providing strong evidence that the source is a new magnetar. However, archival ASCA and ROSAT observations found the source nearly 2 orders of magnitude fainter. This transient behavior and the observed long-term flux variability of the source in absence of an observed SGR-like burst activity make it the first confirmed transient magnetar and suggest that other neutron stars that share the properties of XTE 51810- 197 during its inactive phase may be unidentified transient magnetars awaiting detection via a similar activity. This implies a larger population of magnetars than previously surmised and a possible evolutionary connection between magnetars and other neutron star families. Subject headings: pulsars: general -pulsars: individual (XTE 51810- 197) - stars: magnetic fields -

Bidirectional electroluminescence from p-SnO2/i-MgZnO/n-ZnO heterojunction light-emitting diodes

International Nuclear Information System (INIS)

Yang, Yanqin; Li, Songzhan; Liu, Feng; Zhang, Nangang; Liu, Kan; Wang, Shengxiang; Fang, Guojia

2017-01-01

Light-emitting diodes based on p-SnO 2 /i-MgZnO/n-ZnO heterojunction have been fabricated. The material properties and the performance of heterojunction device are characterized. Current-voltage characteristics of the device show a diode-like rectifying behavior. Under forward bias, two prominent emission peaks located at 589 nm and 722 nm in the visible region and a weak ultraviolet emission are observed from p-SnO 2 /i-MgZnO/n-ZnO heterojunction device. As the device is under reverse bias, a broad visible emission band dominates the electroluminescence spectrum at a high current. Furthermore, the emission mechanism has been discussed in terms of energy band structures of the device under forward and reverse biases.

Preparation of ZnO film on p-Si and I-V characteristics of p-Si/n-ZnO

Directory of Open Access Journals (Sweden)

Shampa Mondal

2012-01-01

Full Text Available Zinc oxide (ZnO thin films were deposited on p-silicon (Si substrate from ammonium zincate bath following a chemical dipping technique called SILAR. Films in the thickness range 0.5-4.5 µm could be prepared by varying the number of dipping for a fixed concentration (0.125 M of zincate bath and fixed pH (11.00-11.10. Higher values of dipping produced nonadherent and poor quality films. Structural characterization by X-ray diffraction (XRD indicates the formation of polycrystalline single phase ZnO with strong c-axis orientation. The structural characteristics of the films were found to be a sensitive function of film thickness. The degree of orientation was found to be a function of film thickness and a maximum was found at around 2.2 µm. Scanning electron microscopy (SEM reveals the formation of sub-micrometer crystallites on silicon substrate. The coverage of crystallites (grains on substrate surface increases with number of dipping. Dense film containing grains distributed throughout the surface is obtained at large thicknesses. The ohmic nature of silver (Ag on ZnO and Aluminum (Al on p-Si was confirmed by I-V measurements. I-V characteristic of the p-Si/n-ZnO heterojunction was studied and rectification was observed. The maximum value of forward to reverse current ratio was ~15 at 3.0 V.

Preparation of ZnO film on p-Si and I-V characteristics of p-Si/n-ZnO

Directory of Open Access Journals (Sweden)

Shampa Mondal

2013-02-01

Full Text Available Zinc oxide (ZnO thin films were deposited on p-silicon (Si substrate from ammonium zincate bath following a chemical dipping technique called SILAR. Films in the thickness range 0.5-4.5 µm could be prepared by varying the number of dipping for a fixed concentration (0.125 M of zincate bath and fixed pH (11.00-11.10. Higher values of dipping produced nonadherent and poor quality films. Structural characterization by X-ray diffraction (XRD indicates the formation of polycrystalline single phase ZnO with strong c-axis orientation. The structural characteristics of the films were found to be a sensitive function of film thickness. The degree of orientation was found to be a function of film thickness and a maximum was found at around 2.2 µm. Scanning electron microscopy (SEM reveals the formation of sub-micrometer crystallites on silicon substrate. The coverage of crystallites (grains on substrate surface increases with number of dipping. Dense film containing grains distributed throughout the surface is obtained at large thicknesses. The ohmic nature of silver (Ag on ZnO and Aluminum (Al on p-Si was confirmed by I-V measurements. I-V characteristic of the p-Si/n-ZnO heterojunction was studied and rectification was observed. The maximum value of forward to reverse current ratio was ~15 at 3.0 V.

Study of J/psi -> p(p)over-bar and J/psi -> n(n)over-bar

NARCIS (Netherlands)

Ablikim, M.; Achasov, M. N.; Ambrose, D. J.; An, F. F.; An, Q.; An, Z. H.; Bai, J. Z.; Ban, Y.; Becker, J.; Berger, N.; Bertani, M.; Bian, J. M.; Boger, E.; Bondarenko, O.; Boyko, I.; Briere, R. A.; Bytev, V.; Cai, X.; Calcaterra, A.; Cao, G. F.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, S. J.; Chen, Y.; Chen, Y. B.; Cheng, H. P.; Chu, Y. P.; Cronin-Hennessy, D.; Dai, H. L.; Dai, J. P.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; Ding, W. M.; Ding, Y.; Dong, L. Y.; Dong, M. Y.; Du, S. X.; Fang, J.; Fang, S. S.; Fava, L.; Feldbauer, F.; Feng, C. Q.; Ferroli, R. B.; Fu, C. D.; Fu, J. L.; Gao, Y.; Geng, C.; Goetzen, K.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, M. H.; Gu, Y. T.; Guan, Y. H.; Guo, A. Q.; Guo, L. B.; Guo, Y. P.; Han, Y. L.; Hao, X. Q.; Harris, F. A.; He, K. L.; He, M.; He, Z. Y.; Held, T.; Heng, Y. K.; Hou, Z. L.; Hu, H. M.; Hu, J. F.; Hu, T.; Huang, B.; Huang, G. M.; Huang, J. S.; Huang, X. T.; Huang, Y. P.; Hussain, T.; Ji, C. S.; Ji, Q.; Ji, X. B.; Ji, X. L.; Jia, L. K.; Jiang, L. L.; Jiang, X. S.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jing, F. F.; Kalantar-Nayestanaki, N.; Kavatsyuk, M.; Kuehn, W.; Lai, W.; Lange, J. S.; Leung, J. K. C.; Li, C. H.; Li, Cheng; Li, Cui; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, J. C.; Li, K.; Li, Lei; Li, N. B.; Li, Q. J.; Li, S. L.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. N.; Li, X. Q.; Li, X. R.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Liao, X. T.; Liu, B. J.; Liu, B. J.; Liu, C. L.; Liu, C. X.; Liu, C. Y.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H.; Liu, H. B.; Liu, H. H.; Liu, H. M.; Liu, H. W.; Liu, J. P.; Liu, K. Y.; Liu, Kai; Liu, Kun; Liu, P. L.; Liu, S. B.; Liu, X.; Liu, X. H.; Liu, Y.; Liu, Y. B.; Liu, Z. A.; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H.; Lu, G. R.; Lu, H. J.; Lu, J. G.; Lu, Q. W.; Lu, X. R.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Lv, M.; Ma, C. L.; Ma, F. C.; Ma, H. L.; Ma, Q. M.; Ma, S.; Ma, T.; Ma, X. Y.; Ma, Y.; Maas, F. E.; Maggiora, M.; Malik, Q. A.; Mao, H.; Mao, Y. J.; Mao, Z. P.; Messchendorp, J. G.; Min, J.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Morales, C. Morales; Motzko, C.; Muchnoi, N. Yu.; Nefedov, Y.; Nicholson, C.; Nikolaev, I. B.; Ning, Z.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Park, J. W.; Pelizaeus, M.; Peters, K.; Ping, J. L.; Ping, R. G.; Poling, R.; Prencipe, E.; Pun, C. S. J.; Qi, M.; Qian, S.; Qiao, C. F.; Qin, X. S.; Qin, Y.; Qin, Z. H.; Qiu, J. F.; Rashid, K. H.; Rong, G.; Ruan, X. D.; Sarantsev, A.; Schulze, J.; Shao, M.; Shen, C. P.; Shen, X. Y.; Sheng, H. Y.; Shepherd, M. R.; Song, X. Y.; Spataro, S.; Spruck, B.; Sun, D. H.; Sun, G. X.; Sun, J. F.; Sun, S. S.; Sun, X. D.; Sun, Y. J.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tang, C. J.; Tang, X.; Thorndike, E. H.; Tian, H. L.; Toth, D.; Ullrich, M.; Varner, G. S.; Wang, B.; Wang, B. Q.; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, Q.; Wang, Q. J.; Wang, S. G.; Wang, X. F.; Wang, X. L.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. Y.; Wei, D. H.; Weidenkaff, P.; Wen, Q. G.; Wen, S. P.; Werner, M.; Wiedner, U.; Wu, L. H.; Wu, N.; Wu, S. X.; Wu, W.; Wu, Z.; Xia, L. G.; Xiao, Z. J.; Xie, Y. G.; Xiu, Q. L.; Xu, G. F.; Xu, G. M.; Xu, H.; Xu, Q. J.; Xu, X. P.; Xu, Y.; Xu, Z. R.; Xue, F.; Xue, Z.; Yan, L.; Yan, W. B.; Yan, Y. H.; Yang, H. X.; Yang, T.; Yang, Y.; Yang, Y. X.; Ye, H.; Ye, M.; Ye, M. H.; Yu, B. X.; Yu, C. X.; Yu, J. S.; Yu, S. P.; Yuan, C. Z.; Yuan, W. L.; Yuan, Y.; Zafar, A. A.; Zallo, A.; Zeng, Y.; Zhang, B. X.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J.; Zhang, J. G.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, L.; Zhang, S. H.; Zhang, T. R.; Zhang, X. J.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Y. S.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, H. S.; Zhao, J. W.; Zhao, K. X.; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, X. H.; Zhao, Y. B.; Zhao, Z. G.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, Y. H.; Zheng, Z. P.; Zhong, B.; Zhong, J.; Zhou, L.; Zhou, X. K.; Zhou, X. R.; Zhu, C.; Zhu, K.; Zhu, K. J.; Zhu, S. H.; Zhu, X. L.; Zhu, X. W.; Zhu, Y. M.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.; Zuo, J. X.

2012-01-01

The decays J/psi -> p (p) over bar and J/psi -> n (n) over bar have been investigated with a sample of 225.2 x 10(6) J/psi events collected with the BESIII detector at the BEPCII e(+)e(-) collider. The branching fractions are determined to be B(J/psi -> p (p) over bar) = (2.112 +/- 0.004 +/- 0.031 x

Bra.Di.P.O. and P.I.G.R.O.: Innovative Devices for Motor Learning Programs

Directory of Open Access Journals (Sweden)

Guido Belforte

2014-01-01

Full Text Available Two mechatronics prototypes, useful for robotic neurotreatments and new clinical trainings, are here presented. P.I.G.R.O. (pneumatic interactive gait rehabilitation orthosis is an active exoskeleton with an electropneumatic control. It imposes movements on lower limbs in order to produce in the patient’s brain proper motor cortex activation. Bra.Di.P.O. (brain discovery pneumatic orthosis is an MR-compatible device, designed to improve fMRI (functional magnetic resonance imaging analysis. The two devices are presented together because both are involved in the study of new robotic treatments of patients affected by ictus or brain stroke or in some motor learning experimental investigations carried out on healthy subjects.

Measurement of the cross section for the reaction γp →J/ψp with the ZEUS detector at HERA

International Nuclear Information System (INIS)

Derrick, M.; Krakauer, D.; Magill, S.

1995-03-01

This paper reports the cross section measurements for the process ep→eJ/ψ p for Q 2 2 at √s=296 GeV, based on an integrated luminosity of about 0.5 pb -1 , using the ZEUS detector. The J/ψ was detected in its e + e - and μ + μ - decay modes. The photoproduction cross section was measured to be 52 -12 +7 ±10 nb at an average γp centre of mass energy of 67 GeV and 71 -20 +13 ±12 nb at 114 GeV. The significant rise of the cross section compared to lower energy measurements is not in agreement with VDM models, but can be described by QCD inspired models if a rise in the gluon momentum density at low x in the proton is assumed. (orig.)

Transient hypothyroidism after 131I treatment of Graves disease

International Nuclear Information System (INIS)

Liu Jianfeng; Fang Yi; Zhang Xiuli; Ye Genyao; Xing Jialiu; Zhang Youren

2003-01-01

Objective: To evaluate the results of the transient hypothyroidism after 131 I treatment of Graves disease. Methods: A total of 32 transient hypothyroidism patients treated with 131 I for Graves disease were studied and followed up. Results: Transient hypothyroidism occurred within 2-6 months after 131 I treatment and 19 patients were symptomatic. At diagnosis of transient hypothyroidism, T 3 and T 4 levels were decreased had normal, TSH levels were increased, normal or low. Follow-up examination found that 20 patients were normal and 12 patients had relapse of hyperthyroidism. Conclusions: Therapy of Graves disease with low doses of 131 I causes a high incidence of transient hypothyroidism. After recovery of transient hypothyroidism, some patients have relapse of hyperthyroidism

Somatyczna determinacja płciowa w nadwadze i otyłości

Directory of Open Access Journals (Sweden)

Michał Zych

2015-12-01

Full Text Available Wstęp: Somatyczne wielkości, takie jak masa (Mc i wysokość ciała (Wc, są używane do wyliczania wskaźników wagowo--wzrostowych i stanowią pomoc w diagnozowaniu nadwagi i otyłości. Cel pracy: Celem pracy jest ocena nadwagi i otyłości kobiet i mężczyzn w świetle prostych wskaźników somatycznych. Materiał i metody: W prezentowanej pracy porównano wskaźniki somatyczne 179 kobiet i 181 mężczyzn z nadwagą i otyłością. Do oceny somatycznej badanych użyto: Mc, Wc oraz wskaźników wagowo-wzrostowych: Queteleta, BMI, Rohrera i smukłości. Wyniki: W badanych grupach kobiety i mężczyźni byli w zbliżonym wieku, grupy te różniły się istotnie omawianymi wskaźnikami somatycznymi. Porównania podgrup kobiet i mężczyzn o podobnej wielkości BMI wykazały, że są oni w podobnym wieku i różnią się w zakresie Mc, Wc oraz wskaźników: Queteleta, Rohrera i smukłości. Natomiast między podgrupami kobiet, jak i między podgrupami mężczyzn, występowały istotne różnice wiekowe, Mc oraz wskaźników: BMI, Queteleta, Rohrera i smukłości. Wnioski: Powyższe dane wskazują, że pomimo braku różnic wieku między badanymi kobietami i mężczyznami z podobnym lub różnym BMI istnieje wyraźna somatyczna determinacja płciowa, natomiast w obrębie tej samej płci, różniącej się wskaźnikiem BMI, wiek badanych jest czynnikiem determinacji somatycznej. Wykazano też, że badane wskaźniki somatyczne mają różną moc predykcyjną w zakresie oceny nadwagi i stopnia otyłości badanych kobiet i mężczyzn.

Bidirectional electroluminescence from p-SnO{sub 2}/i-MgZnO/n-ZnO heterojunction light-emitting diodes

Energy Technology Data Exchange (ETDEWEB)

Yang, Yanqin [School of Electronic and Electrical Engineering, Hubei Collaborative Innovation Center of Textile Industrial Chain Generic Technology, Wuhan Textile University, Wuhan 430073 (China); Li, Songzhan, E-mail: liszhan@whu.edu.cn [School of Electronic and Electrical Engineering, Hubei Collaborative Innovation Center of Textile Industrial Chain Generic Technology, Wuhan Textile University, Wuhan 430073 (China); Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072 (China); Liu, Feng; Zhang, Nangang; Liu, Kan [School of Electronic and Electrical Engineering, Hubei Collaborative Innovation Center of Textile Industrial Chain Generic Technology, Wuhan Textile University, Wuhan 430073 (China); Wang, Shengxiang, E-mail: sxwang@wtu.edu.cn [School of Electronic and Electrical Engineering, Hubei Collaborative Innovation Center of Textile Industrial Chain Generic Technology, Wuhan Textile University, Wuhan 430073 (China); Fang, Guojia [Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072 (China)

2017-06-15

Light-emitting diodes based on p-SnO{sub 2}/i-MgZnO/n-ZnO heterojunction have been fabricated. The material properties and the performance of heterojunction device are characterized. Current-voltage characteristics of the device show a diode-like rectifying behavior. Under forward bias, two prominent emission peaks located at 589 nm and 722 nm in the visible region and a weak ultraviolet emission are observed from p-SnO{sub 2}/i-MgZnO/n-ZnO heterojunction device. As the device is under reverse bias, a broad visible emission band dominates the electroluminescence spectrum at a high current. Furthermore, the emission mechanism has been discussed in terms of energy band structures of the device under forward and reverse biases.

Near threshold enhancement of the p p-bar mass spectrum in J/Psi decay

International Nuclear Information System (INIS)

A. Sibirtsev; J. Haidenbauer; S. Krewald; Ulf-G. Meissner; A.W. Thomas

2004-01-01

We investigate the nature of the near-threshold enhancement in the p (bar p) invariant mass spectrum of the reaction J/Ψ → γ p (bar p) reported recently by the BES Collaboration. Using the Juelich N (bar N) model we show that the mass dependence of the p (bar p) spectrum close to the threshold can be reproduced by the S-wave p (bar p) final state interaction in the isospin I=1 state within the Watson-Migdal approach. However, because of our poor knowledge of the N (bar N) interaction near threshold and of the J/Ψ → γ p (bar p) reaction mechanism and in view of the controversial situation in the decay J/Ψ → π 0 p (bar p), where no obvious signs of a p (bar p) final state interaction are seen, explanations other than final state interactions cannot be ruled out at the present stage

Near threshold enhancement of the p p-bar mass spectrum in J/Psi decay

Energy Technology Data Exchange (ETDEWEB)

A. Sibirtsev; J. Haidenbauer; S. Krewald; Ulf-G. Meissner; A.W. Thomas

2004-12-01

We investigate the nature of the near-threshold enhancement in the p {bar p} invariant mass spectrum of the reaction J/{Psi} {yields} {gamma} p {bar p} reported recently by the BES Collaboration. Using the Juelich N {bar N} model we show that the mass dependence of the p {bar p} spectrum close to the threshold can be reproduced by the S-wave p {bar p} final state interaction in the isospin I=1 state within the Watson-Migdal approach. However, because of our poor knowledge of the N {bar N} interaction near threshold and of the J/{Psi} {yields} {gamma} p {bar p} reaction mechanism and in view of the controversial situation in the decay J/{Psi} {yields} {pi}{sup 0} p {bar p}, where no obvious signs of a p {bar p} final state interaction are seen, explanations other than final state interactions cannot be ruled out at the present stage.

Dziedzictwo Wielkiego Księstwa Litewskiego i Kresów północno-wschodnich w świetle ustaleń językoznawstwa erudycyjnego

Directory of Open Access Journals (Sweden)

Katarzyna Węgorowska

2014-12-01

Full Text Available Heritage of the Grand Duchy of Lithuania and the Polish Northeastern Borderlands in the light of erudite linguistics The essay contains reflections on the ways of using erudite linguistics, a young discipline created by me, in the study of the Grand Duchy of Lithuania and the Polish Northeastern Borderlands. Correlation of linguistic and extralinguistic conclusions (culture, history, art, gemology permits us to look in a new way at many facts of the Polish Northeastern Borderlands that linguists had not been interested in before, such as old Polish Northeastern Borderlands museum artifacts, jewelry of Grand Duchy of Lithuania, icon of Our Lady of the Gate of Dawn, cult of the dead in the Polish Northeastern Borderlands, architecture of the old Vilnius, manor house in Czombrów – the prototype of Soplicowo (the village in Pan Tadeusz epic poem, descriptions of Henryk Poddębski’s daguerreotype images, Vilnius identity of Henryk Szylkin or symbolic-figurative nicknames of Vilnius.   Dziedzictwo Wielkiego Księstwa Litewskiego i Kresów północno-wschodnich w świetle ustaleń językoznawstwa erudycyjnego Szkic jest refleksją o sposobach wykorzystywania stworzonego przeze mnie, kilkunastoletniego zaledwie, językoznawstwa erudycyjnego w badaniach nad problematyką wielkoksiążęcą i północnokresową. Korelacja ustaleń językoznawczych z ustaleniami pozajęzykowymi (kultura, historia, sztuka, gemmologia… pozwoliła na nowe odczytanie wielu kresowych faktów, które nie były dotąd  przedmiotem zainteresowania językoznawców, jak np.: artefakty dawnych północnokresowych muzeów, wielkoksiążęce precjoza, Ikona Ostrobramska, północnokresowy kult zmarłych, architektura dawnego Wilna, prototyp Soplicowa – dwór w Czombrowie, opisy dagerotypów Henryka Poddębskiego, wileńska tożsamość Henryka Szylkina czy symboliczno-metaforyczne nazwy Wilna.

A new outburst of the recurrent neutron star transient SAX J1747.0-2853

NARCIS (Netherlands)

Brandt, S.; Chenevez, J.; Kuulkers, E.; Natalucci, L.; Fiocchi, M.T.; Tarana, A.; Shaw, S.; Beckmann, V.; Courvoisier, T.J.L.; Domingo, A.; Ebisawa, K.; Kretschmar, P.J.P.; Markwardt, C.; Oosterbroek, T.; Paizis, A.; Risquez, D.; Sanchez-Fernandez, C.; Wijnands, R.

2007-01-01

The recurrent transient neutron star system SAX J1747.0-2853 has in the past shown various outbursts with about 60 days duration. Recent observations with INTEGRAL reveal that SAX J1747.0-2853 shows increased activity which may mark the beginning of a new outburst. During the INTEGRAL Galactic Bulge

Double-layered NiO photocathodes for p-type DSSCs with record IPCE

Energy Technology Data Exchange (ETDEWEB)

Li, Lin; Qin, Peng; Gorlov, Mikhail [Center of Molecular Devices School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Stockholm (Sweden); Gibson, Elizabeth A.; Boschloo, Gerrit [Department of Physical and Analytical Chemistry, Uppsala University (Sweden); Hagfeldt, Anders [Center of Molecular Devices School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Stockholm (Sweden); Department of Physical and Analytical Chemistry, Uppsala University (Sweden); DUT-KTH Joint Education and Research Center of Molecular Devices, State Key Laboratory of Fine Chemicals, Dalian University of Technology (DUT), Dalian (China); Sun, Licheng [Center of Molecular Devices School of Chemical Science and Engineering, Royal Institute of Technology (KTH), Stockholm (Sweden); DUT-KTH Joint Education and Research Center of Molecular Devices, State Key Laboratory of Fine Chemicals, Dalian University of Technology (DUT), Dalian (China)

2010-04-18

A way to achieve a high-efficiency dye-sensitized solar cell is to combine an n-type TiO{sub 2}-based photoanode with a p-type photocathode in a tandem configuration. The development of an efficient photocathode is, at present, the key target. We have optimized the NiO, I{sub 3}{sup -}/I{sup -} p-DSSC system to obtain record photocurrent, giving 64% incident photon-to-current conversion efficiency (IPCE) and 5.48 mAcm{sup -2} J{sub SC}. (Abstract Copyright [2010], Wiley Periodicals, Inc.)

INTEGRAL observation of the Galactic transient Swift J174510.8-262411

DEFF Research Database (Denmark)

Vovk, I.; Ferrigno, C.; Bozzo, E.

2012-01-01

with time. On the base of the rapid flux increase, the high value of the energy cut-off and the absence of thermonuclear bursts, we argue that Swift J174510.8-262411 might be a new black-hole transient. Further observations at all wavelengths are encouraged to unveil the nature of this source. We thank...

Calculation of transient potential rise on the wind turbine struck by lightning.

Science.gov (United States)

Xiaoqing, Zhang

2014-01-01

A circuit model is proposed in this paper for calculating the transient potential rise on the wind turbine struck by lightning. The model integrates the blade, sliding contact site, and tower and grounding system of the wind turbine into an equivalent circuit. The lightning current path from the attachment point to the ground can be fully described by the equivalent circuit. The transient potential responses are obtained in the different positions on the wind turbine by solving the circuit equations. In order to check the validity of the model, the laboratory measurement is made with a reduced-scale wind turbine. The measured potential waveform is compared with the calculated one and a better agreement is shown between them. The practical applicability of the model is also examined by a numerical example of a 2 MW Chinese-built wind turbine.

J-Specific Dynamics in AN Optical Centrifuge Using Transient IR Spectroscopy

Science.gov (United States)

Murray, Matthew J.; Liu, Qingnan; Toro, Carlos; Mullin, Amy S.

2013-06-01

Quantum state-specific dynamics are reported for a number of CO_{2} rotational states in an optical centrifuge. The optical centrifuge results from combining oppositely-chirped ultrafast laser pulses and spinning CO_{2} molecules into extremely high rotational states with J≈220. Collisions of centrifuged molecules induce depletion of population from low-J states (J=0 and 36) and lead to appearance of population in high J states (J=36, 54 and 76). Transient Doppler-broadened line profiles for individual CO_{2} states reveal that the depletion populations have narrow velocity distributions with translational temperatures significantly colder than 300 K. Molecules that appear in the higher rotational states have broad velocity distributions, showing that both rotational and translational energy are imparted in collisions of the centrifuged molecules. These results show that substantial amounts of angular momentum persist after many collisions and that translational energy exchange continues for several thousand collisions.

P J Sanjeeva Raj

Indian Academy of Sciences (India)

Volume 13 Issue 7 July 2008 pp 648-654 General Article. Oysters in a New Classification of Keystone Species · P J Sanjeeva Raj · More Details Fulltext PDF. Volume 18 Issue 2 February 2013 pp 156-162 General Article. Keystone Functions of Hydrilla verticilata · Stephen Sumithran P J Sanjeeva Raj · More Details Fulltext ...

INTEGRAL discovery of a new transient source: IGR J16374-5043

DEFF Research Database (Denmark)

Pavan, L.; Terrier, R.; Bozzo, E.

2010-01-01

During the INTEGRAL observations of RX J1713.7-3946 (PI R. Terrier), performed between 2010-08-21 03:39 and 2010-08-23 12:03, a new transient source was discovered by the soft gamma-ray imager IBIS/ISGRI (17-300 keV). The source is detected at a significance level of 10 sigma in the 20-40 keV ene...

Model-independent evidence for $J/\\psi p$ contributions to $\\Lambda_b^0\\to J/\\psi p K^-$ decays

CERN Document Server

Aaij, Roel; Adeva, Bernardo; Adinolfi, Marco; Ajaltouni, Ziad; Akar, Simon; Albrecht, Johannes; Alessio, Federico; Alexander, Michael; Ali, Suvayu; Alkhazov, Georgy; Alvarez Cartelle, Paula; Alves Jr, Antonio Augusto; Amato, Sandra; Amerio, Silvia; Amhis, Yasmine; An, Liupan; Anderlini, Lucio; Andreassi, Guido; Andreotti, Mirco; Andrews, Jason; Appleby, Robert; Aquines Gutierrez, Osvaldo; Archilli, Flavio; d'Argent, Philippe; Artamonov, Alexander; Artuso, Marina; Aslanides, Elie; Auriemma, Giulio; Baalouch, Marouen; Bachmann, Sebastian; Back, John; Badalov, Alexey; Baesso, Clarissa; Baker, Sophie; Baldini, Wander; Barlow, Roger; Barschel, Colin; Barsuk, Sergey; Barter, William; Batozskaya, Varvara; Battista, Vincenzo; Bay, Aurelio; Beaucourt, Leo; Beddow, John; Bedeschi, Franco; Bediaga, Ignacio; Bel, Lennaert; Bellee, Violaine; Belloli, Nicoletta; Belyaev, Ivan; Ben-Haim, Eli; Bencivenni, Giovanni; Benson, Sean; Benton, Jack; Berezhnoy, Alexander; Bernet, Roland; Bertolin, Alessandro; Betti, Federico; Bettler, Marc-Olivier; van Beuzekom, Martinus; Bifani, Simone; Billoir, Pierre; Bird, Thomas; Birnkraut, Alex; Bizzeti, Andrea; Blake, Thomas; Blanc, Frédéric; Blouw, Johan; Blusk, Steven; Bocci, Valerio; Bondar, Alexander; Bondar, Nikolay; Bonivento, Walter; Borgheresi, Alessio; Borghi, Silvia; Borisyak, Maxim; Borsato, Martino; Boubdir, Meriem; Bowcock, Themistocles; Bowen, Espen Eie; Bozzi, Concezio; Braun, Svende; Britsch, Markward; Britton, Thomas; Brodzicka, Jolanta; Buchanan, Emma; Burr, Christopher; Bursche, Albert; Buytaert, Jan; Cadeddu, Sandro; Calabrese, Roberto; Calvi, Marta; Calvo Gomez, Miriam; Campana, Pierluigi; Campora Perez, Daniel; Capriotti, Lorenzo; Carbone, Angelo; Carboni, Giovanni; Cardinale, Roberta; Cardini, Alessandro; Carniti, Paolo; Carson, Laurence; Carvalho Akiba, Kazuyoshi; Casse, Gianluigi; Cassina, Lorenzo; Castillo Garcia, Lucia; Cattaneo, Marco; Cauet, Christophe; Cavallero, Giovanni; Cenci, Riccardo; Charles, Matthew; Charpentier, Philippe; Chatzikonstantinidis, Georgios; Chefdeville, Maximilien; Chen, Shanzhen; Cheung, Shu-Faye; Chobanova, Veronika; Chrzaszcz, Marcin; Cid Vidal, Xabier; Ciezarek, Gregory; Clarke, Peter; Clemencic, Marco; Cliff, Harry; Closier, Joel; Coco, Victor; Cogan, Julien; Cogneras, Eric; Cogoni, Violetta; Cojocariu, Lucian; Collazuol, Gianmaria; Collins, Paula; Comerma-Montells, Albert; Contu, Andrea; Cook, Andrew; Coquereau, Samuel; Corti, Gloria; Corvo, Marco; Couturier, Benjamin; Cowan, Greig; Craik, Daniel Charles; Crocombe, Andrew; Cruz Torres, Melissa Maria; Cunliffe, Samuel; Currie, Robert; D'Ambrosio, Carmelo; Dall'Occo, Elena; Dalseno, Jeremy; David, Pieter; Davis, Adam; De Aguiar Francisco, Oscar; De Bruyn, Kristof; De Capua, Stefano; De Cian, Michel; De Miranda, Jussara; De Paula, Leandro; De Simone, Patrizia; Dean, Cameron Thomas; Decamp, Daniel; Deckenhoff, Mirko; Del Buono, Luigi; Déléage, Nicolas; Demmer, Moritz; Dendek, Adam; Derkach, Denis; Deschamps, Olivier; Dettori, Francesco; Dey, Biplab; Di Canto, Angelo; Dijkstra, Hans; Dordei, Francesca; Dorigo, Mirco; Dosil Suárez, Alvaro; Dovbnya, Anatoliy; Dreimanis, Karlis; Dufour, Laurent; Dujany, Giulio; Dungs, Kevin; Durante, Paolo; Dzhelyadin, Rustem; Dziurda, Agnieszka; Dzyuba, Alexey; Easo, Sajan; Egede, Ulrik; Egorychev, Victor; Eidelman, Semen; Eisenhardt, Stephan; Eitschberger, Ulrich; Ekelhof, Robert; Eklund, Lars; El Rifai, Ibrahim; Elsasser, Christian; Ely, Scott; Esen, Sevda; Evans, Hannah Mary; Evans, Timothy; Falabella, Antonio; Färber, Christian; Farley, Nathanael; Farry, Stephen; Fay, Robert; Fazzini, Davide; Ferguson, Dianne; Fernandez Albor, Victor; Ferrari, Fabio; Ferreira Rodrigues, Fernando; Ferro-Luzzi, Massimiliano; Filippov, Sergey; Fiore, Marco; Fiorini, Massimiliano; Firlej, Miroslaw; Fitzpatrick, Conor; Fiutowski, Tomasz; Fleuret, Frederic; Fohl, Klaus; Fontana, Marianna; Fontanelli, Flavio; Forshaw, Dean Charles; Forty, Roger; Frank, Markus; Frei, Christoph; Frosini, Maddalena; Fu, Jinlin; Furfaro, Emiliano; Gallas Torreira, Abraham; Galli, Domenico; Gallorini, Stefano; Gambetta, Silvia; Gandelman, Miriam; Gandini, Paolo; Gao, Yuanning; García Pardiñas, Julián; Garra Tico, Jordi; Garrido, Lluis; Garsed, Philip John; Gascon, David; Gaspar, Clara; Gavardi, Laura; Gazzoni, Giulio; Gerick, David; Gersabeck, Evelina; Gersabeck, Marco; Gershon, Timothy; Ghez, Philippe; Gianì, Sebastiana; Gibson, Valerie; Girard, Olivier Göran; Giubega, Lavinia-Helena; Gligorov, V.V.; Göbel, Carla; Golubkov, Dmitry; Golutvin, Andrey; Gomes, Alvaro; Gotti, Claudio; Grabalosa Gándara, Marc; Graciani Diaz, Ricardo; Granado Cardoso, Luis Alberto; Graugés, Eugeni; Graverini, Elena; Graziani, Giacomo; Grecu, Alexandru; Griffith, Peter; Grillo, Lucia; Grünberg, Oliver; Gushchin, Evgeny; Guz, Yury; Gys, Thierry; Hadavizadeh, Thomas; Hadjivasiliou, Christos; Haefeli, Guido; Haen, Christophe; Haines, Susan; Hall, Samuel; Hamilton, Brian; Han, Xiaoxue; Hansmann-Menzemer, Stephanie; Harnew, Neville; Harnew, Samuel; Harrison, Jonathan; He, Jibo; Head, Timothy; Heister, Arno; Hennessy, Karol; Henrard, Pierre; Henry, Louis; Hernando Morata, Jose Angel; van Herwijnen, Eric; Heß, Miriam; Hicheur, Adlène; Hill, Donal; Hoballah, Mostafa; Hombach, Christoph; Hongming, Li; Hulsbergen, Wouter; Humair, Thibaud; Hushchyn, Mikhail; Hussain, Nazim; Hutchcroft, David; Idzik, Marek; Ilten, Philip; Jacobsson, Richard; Jaeger, Andreas; Jalocha, Pawel; Jans, Eddy; Jawahery, Abolhassan; John, Malcolm; Johnson, Daniel; Jones, Christopher; Joram, Christian; Jost, Beat; Jurik, Nathan; Kandybei, Sergii; Kanso, Walaa; Karacson, Matthias; Karbach, Moritz; Karodia, Sarah; Kecke, Matthieu; Kelsey, Matthew; Kenyon, Ian; Kenzie, Matthew; Ketel, Tjeerd; Khairullin, Egor; Khanji, Basem; Khurewathanakul, Chitsanu; Kirn, Thomas; Klaver, Suzanne; Klimaszewski, Konrad; Kolpin, Michael; Komarov, Ilya; Koopman, Rose; Koppenburg, Patrick; Kozeiha, Mohamad; Kravchuk, Leonid; Kreplin, Katharina; Kreps, Michal; Krokovny, Pavel; Kruse, Florian; Krzemien, Wojciech; Kucewicz, Wojciech; Kucharczyk, Marcin; Kudryavtsev, Vasily; Kuonen, Axel Kevin; Kurek, Krzysztof; Kvaratskheliya, Tengiz; Lacarrere, Daniel; Lafferty, George; Lai, Adriano; Lambert, Dean; Lanfranchi, Gaia; Langenbruch, Christoph; Langhans, Benedikt; Latham, Thomas; Lazzeroni, Cristina; Le Gac, Renaud; van Leerdam, Jeroen; Lees, Jean-Pierre; Lefèvre, Regis; Leflat, Alexander; Lefrançois, Jacques; Lemaitre, Florian; Lemos Cid, Edgar; Leroy, Olivier; Lesiak, Tadeusz; Leverington, Blake; Li, Yiming; Likhomanenko, Tatiana; Lindner, Rolf; Linn, Christian; Lionetto, Federica; Liu, Bo; Liu, Xuesong; Loh, David; Longstaff, Iain; Lopes, Jose; Lucchesi, Donatella; Lucio Martinez, Miriam; Luo, Haofei; Lupato, Anna; Luppi, Eleonora; Lupton, Oliver; Lusardi, Nicola; Lusiani, Alberto; Lyu, Xiao-Rui; Machefert, Frederic; Maciuc, Florin; Maev, Oleg; Maguire, Kevin; Malde, Sneha; Malinin, Alexander; Manca, Giulia; Mancinelli, Giampiero; Manning, Peter Michael; Mapelli, Alessandro; Maratas, Jan; Marchand, Jean François; Marconi, Umberto; Marin Benito, Carla; Marino, Pietro; Marks, Jörg; Martellotti, Giuseppe; Martin, Morgan; Martinelli, Maurizio; Martinez Santos, Diego; Martinez Vidal, Fernando; Martins Tostes, Danielle; Massacrier, Laure Marie; Massafferri, André; Matev, Rosen; Mathad, Abhijit; Mathe, Zoltan; Matteuzzi, Clara; Mauri, Andrea; Maurin, Brice; Mazurov, Alexander; McCann, Michael; McCarthy, James; McNab, Andrew; McNulty, Ronan; Meadows, Brian; Meier, Frank; Meissner, Marco; Melnychuk, Dmytro; Merk, Marcel; Merli, Andrea; Michielin, Emanuele; Milanes, Diego Alejandro; Minard, Marie-Noelle; Mitzel, Dominik Stefan; Molina Rodriguez, Josue; Monroy, Ignacio Alberto; Monteil, Stephane; Morandin, Mauro; Morawski, Piotr; Mordà, Alessandro; Morello, Michael Joseph; Moron, Jakub; Morris, Adam Benjamin; Mountain, Raymond; Muheim, Franz; Mulder, Mick; Müller, Dominik; Müller, Janine; Müller, Katharina; Müller, Vanessa; Mussini, Manuel; Muster, Bastien; Naik, Paras; Nakada, Tatsuya; Nandakumar, Raja; Nandi, Anita; Nasteva, Irina; Needham, Matthew; Neri, Nicola; Neubert, Sebastian; Neufeld, Niko; Neuner, Max; Nguyen, Anh Duc; Nguyen-Mau, Chung; Niess, Valentin; Nieswand, Simon; Niet, Ramon; Nikitin, Nikolay; Nikodem, Thomas; Novoselov, Alexey; O'Hanlon, Daniel Patrick; Oblakowska-Mucha, Agnieszka; Obraztsov, Vladimir; Ogilvy, Stephen; Okhrimenko, Oleksandr; Oldeman, Rudolf; Onderwater, Gerco; Osorio Rodrigues, Bruno; Otalora Goicochea, Juan Martin; Otto, Adam; Owen, Patrick; Oyanguren, Maria Aranzazu; Palano, Antimo; Palombo, Fernando; Palutan, Matteo; Panman, Jacob; Papanestis, Antonios; Pappagallo, Marco; Pappalardo, Luciano; Pappenheimer, Cheryl; Parker, William; Parkes, Christopher; Passaleva, Giovanni; Patel, Girish; Patel, Mitesh; Patrignani, Claudia; Pearce, Alex; Pellegrino, Antonio; Penso, Gianni; Pepe Altarelli, Monica; Perazzini, Stefano; Perret, Pascal; Pescatore, Luca; Petridis, Konstantinos; Petrolini, Alessandro; Petruzzo, Marco; Picatoste Olloqui, Eduardo; Pietrzyk, Boleslaw; Pikies, Malgorzata; Pinci, Davide; Pistone, Alessandro; Piucci, Alessio; Playfer, Stephen; Plo Casasus, Maximo; Poikela, Tuomas; Polci, Francesco; Poluektov, Anton; Polyakov, Ivan; Polycarpo, Erica; Popov, Alexander; Popov, Dmitry; Popovici, Bogdan; Potterat, Cédric; Price, Eugenia; Price, Joseph David; Prisciandaro, Jessica; Pritchard, Adrian; Prouve, Claire; Pugatch, Valery; Puig Navarro, Albert; Punzi, Giovanni; Qian, Wenbin; Quagliani, Renato; Rachwal, Bartolomiej; Rademacker, Jonas; Rama, Matteo; Ramos Pernas, Miguel; Rangel, Murilo; Raniuk, Iurii; Raven, Gerhard; Redi, Federico; Reichert, Stefanie; dos Reis, Alberto; Renaudin, Victor; Ricciardi, Stefania; Richards, Sophie; Rihl, Mariana; Rinnert, Kurt; Rives Molina, Vincente; Robbe, Patrick; Rodrigues, Ana Barbara; Rodrigues, Eduardo; Rodriguez Lopez, Jairo Alexis; Rodriguez Perez, Pablo; Rogozhnikov, Alexey; Roiser, Stefan; Romanovsky, Vladimir; Romero Vidal, Antonio; Ronayne, John William; Rotondo, Marcello; Ruf, Thomas; Ruiz Valls, Pablo; Saborido Silva, Juan Jose; Sagidova, Naylya; Saitta, Biagio; Salustino Guimaraes, Valdir; Sanchez Mayordomo, Carlos; Sanmartin Sedes, Brais; Santacesaria, Roberta; Santamarina Rios, Cibran; Santimaria, Marco; Santovetti, Emanuele; Sarti, Alessio; Satriano, Celestina; Satta, Alessia; Saunders, Daniel Martin; Savrina, Darya; Schael, Stefan; Schiller, Manuel; Schindler, Heinrich; Schlupp, Maximilian; Schmelling, Michael; Schmelzer, Timon; Schmidt, Burkhard; Schneider, Olivier; Schopper, Andreas; Schubiger, Maxime; Schune, Marie Helene; Schwemmer, Rainer; Sciascia, Barbara; Sciubba, Adalberto; Semennikov, Alexander; Sergi, Antonino; Serra, Nicola; Serrano, Justine; Sestini, Lorenzo; Seyfert, Paul; Shapkin, Mikhail; Shapoval, Illya; Shcheglov, Yury; Shears, Tara; Shekhtman, Lev; Shevchenko, Vladimir; Shires, Alexander; Siddi, Benedetto Gianluca; Silva Coutinho, Rafael; Silva de Oliveira, Luiz Gustavo; Simi, Gabriele; Sirendi, Marek; Skidmore, Nicola; Skwarnicki, Tomasz; Smith, Eluned; Smith, Iwan Thomas; Smith, Jackson; Smith, Mark; Snoek, Hella; Sokoloff, Michael; Soler, Paul; Soomro, Fatima; Souza, Daniel; Souza De Paula, Bruno; Spaan, Bernhard; Spradlin, Patrick; Sridharan, Srikanth; Stagni, Federico; Stahl, Marian; Stahl, Sascha; Stefkova, Slavomira; Steinkamp, Olaf; Stenyakin, Oleg; Stevenson, Scott; Stoica, Sabin; Stone, Sheldon; Storaci, Barbara; Stracka, Simone; Straticiuc, Mihai; Straumann, Ulrich; Sun, Liang; Sutcliffe, William; Swientek, Krzysztof; Swientek, Stefan; Syropoulos, Vasileios; Szczekowski, Marek; Szumlak, Tomasz; T'Jampens, Stephane; Tayduganov, Andrey; Tekampe, Tobias; Tellarini, Giulia; Teubert, Frederic; Thomas, Christopher; Thomas, Eric; van Tilburg, Jeroen; Tisserand, Vincent; Tobin, Mark; Tolk, Siim; Tomassetti, Luca; Tonelli, Diego; Topp-Joergensen, Stig; Tournefier, Edwige; Tourneur, Stephane; Trabelsi, Karim; Traill, Murdo; Tran, Minh Tâm; Tresch, Marco; Trisovic, Ana; Tsaregorodtsev, Andrei; Tsopelas, Panagiotis; Tuning, Niels; Ukleja, Artur; Ustyuzhanin, Andrey; Uwer, Ulrich; Vacca, Claudia; Vagnoni, Vincenzo; Valat, Sebastien; Valenti, Giovanni; Vallier, Alexis; Vazquez Gomez, Ricardo; Vazquez Regueiro, Pablo; Vázquez Sierra, Carlos; Vecchi, Stefania; van Veghel, Maarten; Velthuis, Jaap; Veltri, Michele; Veneziano, Giovanni; Vesterinen, Mika; Viaud, Benoit; Vieira, Daniel; Vieites Diaz, Maria; Vilasis-Cardona, Xavier; Volkov, Vladimir; Vollhardt, Achim; Voong, David; Vorobyev, Alexey; Vorobyev, Vitaly; Voß, Christian; de Vries, Jacco; Waldi, Roland; Wallace, Charlotte; Wallace, Ronan; Walsh, John; Wang, Jianchun; Ward, David; Watson, Nigel; Websdale, David; Weiden, Andreas; Whitehead, Mark; Wicht, Jean; Wilkinson, Guy; Wilkinson, Michael; Williams, Mark Richard James; Williams, Matthew; Williams, Mike; Williams, Timothy; Wilson, Fergus; Wimberley, Jack; Wishahi, Julian; Wislicki, Wojciech; Witek, Mariusz; Wormser, Guy; Wotton, Stephen; Wraight, Kenneth; Wright, Simon; Wyllie, Kenneth; Xie, Yuehong; Xu, Zhirui; Yang, Zhenwei; Yin, Hang; Yu, Jiesheng; Yuan, Xuhao; Yushchenko, Oleg; Zangoli, Maria; Zavertyaev, Mikhail; Zhang, Liming; Zhang, Yanxi; Zhelezov, Alexey; Zheng, Yangheng; Zhokhov, Anatoly; Zhong, Liang; Zhukov, Valery; Zucchelli, Stefano

2016-08-18

The data sample of $\\Lambda_b^0\\to J/\\psi p K^-$ decays acquired with the LHCb detector from 7 and 8~TeV $pp$ collisions, corresponding to an integrated luminosity of 3 fb$^{-1}$, is inspected for the presence of $J/\\psi p$ or $J/\\psi K^-$ contributions with minimal assumptions about $K^- p$ contributions. It is demonstrated at more than 9 standard deviations that $\\Lambda_b^0\\to J/\\psi p K^-$ decays cannot be described with $K^- p$ contributions alone, and that $J/\\psi p$ contributions play a dominant role in this incompatibility. These model-independent results support the previously obtained model-dependent evidence for $P_c^+\\to J/\\psi p$ charmonium-pentaquark states in the same data sample.

Model-Independent Evidence for J/ψp Contributions to Λ_{b}^{0}→J/ψpK^{-} Decays.

Science.gov (United States)

Aaij, R; Abellán Beteta, C; Adeva, B; Adinolfi, M; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Alvarez Cartelle, P; Alves, A A; Amato, S; Amerio, S; Amhis, Y; An, L; Anderlini, L; Andreassi, G; Andreotti, M; Andrews, J E; Appleby, R B; Aquines Gutierrez, O; Archilli, F; d'Argent, P; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bachmann, S; Back, J J; Badalov, A; Baesso, C; Baker, S; Baldini, W; Barlow, R J; Barschel, C; Barsuk, S; Barter, W; Batozskaya, V; Battista, V; Bay, A; Beaucourt, L; Beddow, J; Bedeschi, F; Bediaga, I; Bel, L J; Bellee, V; Belloli, N; Belyaev, I; Ben-Haim, E; Bencivenni, G; Benson, S; Benton, J; Berezhnoy, A; Bernet, R; Bertolin, A; Betti, F; Bettler, M-O; van Beuzekom, M; Bifani, S; Billoir, P; Bird, T; Birnkraut, A; Bizzeti, A; Blake, T; Blanc, F; Blouw, J; Blusk, S; Bocci, V; Bondar, A; Bondar, N; Bonivento, W; Borgheresi, A; Borghi, S; Borisyak, M; Borsato, M; Boubdir, M; Bowcock, T J V; Bowen, E; Bozzi, C; Braun, S; Britsch, M; Britton, T; Brodzicka, J; Buchanan, E; Burr, C; Bursche, A; Buytaert, J; Cadeddu, S; Calabrese, R; Calvi, M; Calvo Gomez, M; Campana, P; Campora Perez, D; Capriotti, L; Carbone, A; Carboni, G; Cardinale, R; Cardini, A; Carniti, P; Carson, L; Carvalho Akiba, K; Casse, G; Cassina, L; Castillo Garcia, L; Cattaneo, M; Cauet, Ch; Cavallero, G; Cenci, R; Charles, M; Charpentier, Ph; Chatzikonstantinidis, G; Chefdeville, M; Chen, S; Cheung, S-F; Chobanova, V; Chrzaszcz, M; Cid Vidal, X; Ciezarek, G; Clarke, P E L; Clemencic, M; Cliff, H V; Closier, J; Coco, V; Cogan, J; Cogneras, E; Cogoni, V; Cojocariu, L; Collazuol, G; Collins, P; Comerma-Montells, A; Contu, A; Cook, A; Coquereau, S; Corti, G; Corvo, M; Couturier, B; Cowan, G A; Craik, D C; Crocombe, A; Cruz Torres, M; Cunliffe, S; Currie, R; D'Ambrosio, C; Dall'Occo, E; Dalseno, J; David, P N Y; Davis, A; De Aguiar Francisco, O; De Bruyn, K; De Capua, S; De Cian, M; De Miranda, J M; De Paula, L; De Simone, P; Dean, C-T; Decamp, D; Deckenhoff, M; Del Buono, L; Déléage, N; Demmer, M; Dendek, A; Derkach, D; Deschamps, O; Dettori, F; Dey, B; Di Canto, A; Dijkstra, H; Dordei, F; Dorigo, M; Dosil Suárez, A; Dovbnya, A; Dreimanis, K; Dufour, L; Dujany, G; Dungs, K; Durante, P; Dzhelyadin, R; Dziurda, A; Dzyuba, A; Easo, S; Egede, U; Egorychev, V; Eidelman, S; Eisenhardt, S; Eitschberger, U; Ekelhof, R; Eklund, L; El Rifai, I; Elsasser, Ch; Ely, S; Esen, S; Evans, H M; Evans, T; Falabella, A; Färber, C; Farley, N; Farry, S; Fay, R; Fazzini, D; Ferguson, D; Fernandez Albor, V; Ferrari, F; Ferreira Rodrigues, F; Ferro-Luzzi, M; Filippov, S; Fiore, M; Fiorini, M; Firlej, M; Fitzpatrick, C; Fiutowski, T; Fleuret, F; Fohl, K; Fontana, M; Fontanelli, F; Forshaw, D C; Forty, R; Frank, M; Frei, C; Frosini, M; Fu, J; Furfaro, E; Gallas Torreira, A; Galli, D; Gallorini, S; Gambetta, S; Gandelman, M; Gandini, P; Gao, Y; García Pardiñas, J; Garra Tico, J; Garrido, L; Garsed, P J; Gascon, D; Gaspar, C; Gavardi, L; Gazzoni, G; Gerick, D; Gersabeck, E; Gersabeck, M; Gershon, T; Ghez, Ph; Gianì, S; Gibson, V; Girard, O G; Giubega, L; Gligorov, V V; Göbel, C; Golubkov, D; Golutvin, A; Gomes, A; Gotti, C; Grabalosa Gándara, M; Graciani Diaz, R; Granado Cardoso, L A; Graugés, E; Graverini, E; Graziani, G; Grecu, A; Griffith, P; Grillo, L; Grünberg, O; Gushchin, E; Guz, Yu; Gys, T; Hadavizadeh, T; Hadjivasiliou, C; Haefeli, G; Haen, C; Haines, S C; Hall, S; Hamilton, B; Han, X; Hansmann-Menzemer, S; Harnew, N; Harnew, S T; Harrison, J; He, J; Head, T; Heister, A; Hennessy, K; Henrard, P; Henry, L; Hernando Morata, J A; van Herwijnen, E; Heß, M; Hicheur, A; Hill, D; Hoballah, M; Hombach, C; Hongming, L; Hulsbergen, W; Humair, T; Hushchyn, M; Hussain, N; Hutchcroft, D; Idzik, M; Ilten, P; Jacobsson, R; Jaeger, A; Jalocha, J; Jans, E; Jawahery, A; John, M; Johnson, D; Jones, C R; Joram, C; Jost, B; Jurik, N; Kandybei, S; Kanso, W; Karacson, M; Karbach, T M; Karodia, S; Kecke, M; Kelsey, M; Kenyon, I R; Kenzie, M; Ketel, T; Khairullin, E; Khanji, B; Khurewathanakul, C; Kirn, T; Klaver, S; Klimaszewski, K; Kolpin, M; Komarov, I; Koopman, R F; Koppenburg, P; Kozeiha, M; Kravchuk, L; Kreplin, K; Kreps, M; Krokovny, P; Kruse, F; Krzemien, W; Kucewicz, W; Kucharczyk, M; Kudryavtsev, V; Kuonen, A K; Kurek, K; Kvaratskheliya, T; Lacarrere, D; Lafferty, G; Lai, A; Lambert, D; Lanfranchi, G; Langenbruch, C; Langhans, B; Latham, T; Lazzeroni, C; Le Gac, R; van Leerdam, J; Lees, J-P; Lefèvre, R; Leflat, A; Lefrançois, J; Lemaitre, F; Lemos Cid, E; Leroy, O; Lesiak, T; Leverington, B; Li, Y; Likhomanenko, T; Lindner, R; Linn, C; Lionetto, F; Liu, B; Liu, X; Loh, D; Longstaff, I; Lopes, J H; Lucchesi, D; Lucio Martinez, M; Luo, H; Lupato, A; Luppi, E; Lupton, O; Lusardi, N; Lusiani, A; Lyu, X; Machefert, F; Maciuc, F; Maev, O; Maguire, K; Malde, S; Malinin, A; Manca, G; Mancinelli, G; Manning, P; Mapelli, A; Maratas, J; Marchand, J F; Marconi, U; Marin Benito, C; Marino, P; Marks, J; Martellotti, G; Martin, M; Martinelli, M; Martinez Santos, D; Martinez Vidal, F; Martins Tostes, D; Massacrier, L M; Massafferri, A; Matev, R; Mathad, A; Mathe, Z; Matteuzzi, C; Mauri, A; Maurin, B; Mazurov, A; McCann, M; McCarthy, J; McNab, A; McNulty, R; Meadows, B; Meier, F; Meissner, M; Melnychuk, D; Merk, M; Merli, A; Michielin, E; Milanes, D A; Minard, M-N; Mitzel, D S; Molina Rodriguez, J; Monroy, I A; Monteil, S; Morandin, M; Morawski, P; Mordà, A; Morello, M J; Moron, J; Morris, A B; Mountain, R; Muheim, F; Mulder, M M; Müller, D; Müller, J; Müller, K; Müller, V; Mussini, M; Muster, B; Naik, P; Nakada, T; Nandakumar, R; Nandi, A; Nasteva, I; Needham, M; Neri, N; Neubert, S; Neufeld, N; Neuner, M; Nguyen, A D; Nguyen-Mau, C; Niess, V; Nieswand, S; Niet, R; Nikitin, N; Nikodem, T; Novoselov, A; O'Hanlon, D P; Oblakowska-Mucha, A; Obraztsov, V; Ogilvy, S; Okhrimenko, O; Oldeman, R; Onderwater, C J G; Osorio Rodrigues, B; Otalora Goicochea, J M; Otto, A; Owen, P; Oyanguren, A; Palano, A; Palombo, F; Palutan, M; Panman, J; Papanestis, A; Pappagallo, M; Pappalardo, L L; Pappenheimer, C; Parker, W; Parkes, C; Passaleva, G; Patel, G D; Patel, M; Patrignani, C; Pearce, A; Pellegrino, A; Penso, G; Pepe Altarelli, M; Perazzini, S; Perret, P; Pescatore, L; Petridis, K; Petrolini, A; Petruzzo, M; Picatoste Olloqui, E; Pietrzyk, B; Pikies, M; Pinci, D; Pistone, A; Piucci, A; Playfer, S; Plo Casasus, M; Poikela, T; Polci, F; Poluektov, A; Polyakov, I; Polycarpo, E; Popov, A; Popov, D; Popovici, B; Potterat, C; Price, E; Price, J D; Prisciandaro, J; Pritchard, A; Prouve, C; Pugatch, V; Puig Navarro, A; Punzi, G; Qian, W; Quagliani, R; Rachwal, B; Rademacker, J H; Rama, M; Ramos Pernas, M; Rangel, M S; Raniuk, I; Raven, G; Redi, F; Reichert, S; Dos Reis, A C; Renaudin, V; Ricciardi, S; Richards, S; Rihl, M; Rinnert, K; Rives Molina, V; Robbe, P; Rodrigues, A B; Rodrigues, E; Rodriguez Lopez, J A; Rodriguez Perez, P; Rogozhnikov, A; Roiser, S; Romanovsky, V; Romero Vidal, A; Ronayne, J W; Rotondo, M; Ruf, T; Ruiz Valls, P; Saborido Silva, J J; Sagidova, N; Saitta, B; Salustino Guimaraes, V; Sanchez Mayordomo, C; Sanmartin Sedes, B; Santacesaria, R; Santamarina Rios, C; Santimaria, M; Santovetti, E; Sarti, A; Satriano, C; Satta, A; Saunders, D M; Savrina, D; Schael, S; Schiller, M; Schindler, H; Schlupp, M; Schmelling, M; Schmelzer, T; Schmidt, B; Schneider, O; Schopper, A; Schubiger, M; Schune, M-H; Schwemmer, R; Sciascia, B; Sciubba, A; Semennikov, A; Sergi, A; Serra, N; Serrano, J; Sestini, L; Seyfert, P; Shapkin, M; Shapoval, I; Shcheglov, Y; Shears, T; Shekhtman, L; Shevchenko, V; Shires, A; Siddi, B G; Silva Coutinho, R; Silva de Oliveira, L; Simi, G; Sirendi, M; Skidmore, N; Skwarnicki, T; Smith, E; Smith, I T; Smith, J; Smith, M; Snoek, H; Sokoloff, M D; Soler, F J P; Soomro, F; Souza, D; Souza De Paula, B; Spaan, B; Spradlin, P; Sridharan, S; Stagni, F; Stahl, M; Stahl, S; Stefkova, S; Steinkamp, O; Stenyakin, O; Stevenson, S; Stoica, S; Stone, S; Storaci, B; Stracka, S; Straticiuc, M; Straumann, U; Sun, L; Sutcliffe, W; Swientek, K; Swientek, S; Syropoulos, V; Szczekowski, M; Szumlak, T; T'Jampens, S; Tayduganov, A; Tekampe, T; Tellarini, G; Teubert, F; Thomas, C; Thomas, E; van Tilburg, J; Tisserand, V; Tobin, M; Tolk, S; Tomassetti, L; Tonelli, D; Topp-Joergensen, S; Tournefier, E; Tourneur, S; Trabelsi, K; Traill, M; Tran, M T; Tresch, M; Trisovic, A; Tsaregorodtsev, A; Tsopelas, P; Tuning, N; Ukleja, A; Ustyuzhanin, A; Uwer, U; Vacca, C; Vagnoni, V; Valat, S; Valenti, G; Vallier, A; Vazquez Gomez, R; Vazquez Regueiro, P; Vázquez Sierra, C; Vecchi, S; van Veghel, M; Velthuis, J J; Veltri, M; Veneziano, G; Vesterinen, M; Viaud, B; Vieira, D; Vieites Diaz, M; Vilasis-Cardona, X; Volkov, V; Vollhardt, A; Voong, D; Vorobyev, A; Vorobyev, V; Voß, C; de Vries, J A; Waldi, R; Wallace, C; Wallace, R; Walsh, J; Wang, J; Ward, D R; Watson, N K; Websdale, D; Weiden, A; Whitehead, M; Wicht, J; Wilkinson, G; Wilkinson, M; Williams, M; Williams, M P; Williams, M; Williams, T; Wilson, F F; Wimberley, J; Wishahi, J; Wislicki, W; Witek, M; Wormser, G; Wotton, S A; Wraight, K; Wright, S; Wyllie, K; Xie, Y; Xu, Z; Yang, Z; Yin, H; Yu, J; Yuan, X; Yushchenko, O; Zangoli, M; Zavertyaev, M; Zhang, L; Zhang, Y; Zhelezov, A; Zheng, Y; Zhokhov, A; Zhong, L; Zhukov, V; Zucchelli, S

2016-08-19

The data sample of Λ_{b}^{0}→J/ψpK^{-} decays acquired with the LHCb detector from 7 and 8 TeV pp collisions, corresponding to an integrated luminosity of 3  fb^{-1}, is inspected for the presence of J/ψp or J/ψK^{-} contributions with minimal assumptions about K^{-}p contributions. It is demonstrated at more than nine standard deviations that Λ_{b}^{0}→J/ψpK^{-} decays cannot be described with K^{-}p contributions alone, and that J/ψp contributions play a dominant role in this incompatibility. These model-independent results support the previously obtained model-dependent evidence for P_{c}^{+}→J/ψp charmonium-pentaquark states in the same data sample.

A p-n heterojunction of CuI/TiO2 with enhanced photoelectrocatalytic activity for methanol electro-oxidation

International Nuclear Information System (INIS)

Sun, Mingjuan; Hu, Jiayue; Zhai, Chunyang; Zhu, Mingshan; Pan, Jianguo

2017-01-01

Highlights: •A p-n heterojunction of CuI/TiO 2 is constructed. •CuI/TiO 2 is used as the support for depositing Pt nanoparticles. •Enhanced catalytic activity of MOR by using Pt-CuI/TiO 2 under light irradiation. •Improved charger separation contributes to enhanced photoelectrocatalytic activity. -- Abstract: In this paper, a p-n heterojunction including p-type CuI and n-type TiO 2 is first time constructed to be the support for the deposition of Pt. The as-prepared Pt-CuI/TiO 2 modified electrode is studied for the electrocatalytic oxidation of methanol both in dark and under light illumination. Compare to traditional electrocatalytic oxidation, the electrocatalytic activity of Pt-CuI/TiO 2 for methanol oxidation is improved with 4.0 times upon light illumination. Moreover, compare to bare CuI and TiO 2 upon light illumination, the heterostructure of CuI/TiO 2 displays 4.3 and 9.1 times enhanced electrocatalytic activity for methanol oxidation, respectively. The synergistic effects of photocatalysis and electrocatalysis as well as the effective charge transport in the p-n heterojunction of Pt-CuI/TiO 2 contribute such big enhancement. The present studies indicate that the constructing of p-n heterojunction provides more insights in the fields of photoelectrochemical and photo–assisted fuel cell system.

Study of J/ψ decaying into ωp anti p

International Nuclear Information System (INIS)

Ablikim, M.; Bai, J.Z.; Cai, X.; Chen, H.S.; Chen, H.X.; Chen, J.C.; Chen, Jin; Chen, Y.B.; Chu, Y.P.; Deng, Z.Y.; Du, S.X.; Fang, J.; Fang, S.S.; Gao, C.S.; Gu, S.D.; Guo, Y.N.; He, K.L.; Heng, Y.K.; Hu, H.M.; Hu, T.; Huang, G.S.; Ji, X.B.; Jiang, X.S.; Jin, D.P.; Jin, S.; Lai, Y.F.; Li, G.; Li, H.B.; Li, J.; Li, R.Y.; Li, S.M.; Li, W.D.; Li, W.G.; Li, X.L.; Li, X.N.; Liao, H.B.; Liu, B.J.; Liu, C.X.; Liu, Fang; Liu, H.H.; Liu, H.M.; Liu, J.B.; Liu, Jian; Liu, R.G.; Liu, Z.A.; Lu, F.; Lu, J.G.; Ma, L.L.; Ma, Q.M.; Mao, Z.P.; Mo, X.H.; Nie, J.; Ping, R.G.; Qi, N.D.; Qin, H.; Qiu, J.F.; Ren, Z.Y.; Rong, G.; Shan, L.Y.; Shang, L.; Shen, D.L.; Shen, X.Y.; Sheng, H.Y.; Sun, H.S.; Sun, S.S.; Sun, Y.Z.; Sun, Z.J.; Tang, X.; Tong, G.L.; Wang, D.Y.; Wang, L.; Wang, L.L.; Wang, L.S.; Wang, M.; Wang, P.; Wang, P.L.; Wang, W.F.; Wang, Y.F.; Wang, Z.; Wang, Z.Y.; Wang, Zheng; Wei, C.L.; Wei, D.H.; Weng, Y.; Wu, N.; Xia, X.M.; Xie, X.X.; Xu, G.F.; Yang, H.X.; Yu, G.W.; Yuan, C.Z.; Yuan, Y.; Zang, S.L.; Zhang, B.X.; Zhang, B.Y.; Zhang, C.C.; Zhang, D.H.; Zhang, H.Q.; Zhang, H.Y.; Zhang, J.W.; Zhang, J.Y.; Zhang, S.H.; Zhao, D.X.; Zhao, J.W.; Zhao, M.G.; Zhao, P.P.; Zhao, W.R.; Zhao, Z.G.; Zheng, J.P.; Zheng, Z.P.; Zhou, L.; Zhu, K.J.; Zhu, Q.M.; Zhu, Y.C.; Zhu, Y.S.; Zhu, Z.A.; Zhuang, B.A.; Zhuang, X.A.; Zou, B.S.; Ban, Y.; Liu, J.; Zhang, Z.X.; Zheng, H.Q.; Chen, H.F.; Yan, M.L.; Ye, Y.X.; Zhang, Z.P.; Dai, Y.S.; Diao, L.Y.; Ma, F.C.; Dong, Q.F.; Fu, C.D.; Gao, Y.N.; Gu, Y.T.; Ruan, X.D.; Guo, Z.J.; Harris, F.A.; Liu, Q.; Olsen, S.L.; Shen, C.P.; Varner, G.S.; He, M.; Huang, X.T.; Jiao, J.B.; Zhang, X.Y.; Hou, J.; Li, X.Q.; Xu, Y.; Hu, J.H.; Yang, Y.X.; Jiang, X.Y.; Lou, Y.C.; Lu, G.R.; Liang, Y.F.; Zhang, Yiyun; Liu, F.; Xu, X.P.; Liu, J.P.; Luo, C.L.; Ma, H.L.; Ye, M.H.; Zeng, Y.

2008-01-01

The decay J/ψ→ωp anti p is studied using a 5.8 x 10 7 J/ψ event sample accumulated with the BES II detector at the Beijing Electron-Positron Collider. The decay branching fraction is measured to be B(J/ψ→ωp anti p)=(9.8±0.3±1.4) x 10 -4 . No significant enhancement near the pp mass threshold is observed, and an upper limit of B(J/ψ→ωX(1860))B(X(1860)→pp) -5 is determined at the 95% confidence level, where X(1860) designates the near-threshold enhancement seen in the p anti p mass spectrum in J/ψ→γp anti p decays. (orig.)

Inhibition of P2X7 receptor ameliorates transient global cerebral ischemia/reperfusion injury via modulating inflammatory responses in the rat hippocampus

Directory of Open Access Journals (Sweden)

Chu Ketan

2012-04-01

Full Text Available Abstract Background Neuroinflammation plays an important role in cerebral ischemia/reperfusion (I/R injury. The P2X7 receptor (P2X7R has been reported to be involved in the inflammatory response of many central nervous system diseases. However, the role of P2X7Rs in transient global cerebral I/R injury remains unclear. The purpose of this study is to determine the effects of inhibiting the P2X7R in a rat model of transient global cerebral I/R injury, and then to explore the association between the P2X7R and neuroinflammation after transient global cerebral I/R injury. Methods Immediately after infusion with the P2X7R antagonists Brilliant blue G (BBG, adenosine 5′-triphosphate-2′,3′-dialdehyde (OxATP or A-438079, 20 minutes of transient global cerebral I/R was induced using the four-vessel occlusion (4-VO method in rats. Survival rate was calculated, neuronal death in the hippocampal CA1 region was observed using H & E staining, and DNA cleavage was observed by deoxynucleotidyl transferase-mediated UTP nick end labeling TUNEL. In addition, behavioral deficits were measured using the Morris water maze, and RT-PCR and immunohistochemical staining were performed to measure the expression of IL-1β, TNF-α and IL-6, and to identify activated microglia and astrocytes. Results The P2X7R antagonists protected against transient global cerebral I/R injury in a dosage-dependent manner. A high dosage of BBG (10 μg and A-0438079 (3 μg, and a low dosage of OxATP (1 μg significantly increased survival rates, reduced I/R-induced learning memory deficit, and reduced I/R-induced neuronal death, DNA cleavage, and glial activation and inflammatory cytokine overexpression in the hippocampus. Conclusions Our study indicates that inhibiting P2X7Rs protects against transient global cerebral I/R injury by reducing the I/R-induced inflammatory response, which suggests inhibition of P2X7Rs may be a promising therapeutic strategy for clinical treatment of

Elevated CO2 and O3 Levels Influence the Uptake and Leaf Concentration of Mineral N, P, K in Phyllostachys edulis (Carrière J.Houz. and Oligostachyum lubricum (wen King f.

Directory of Open Access Journals (Sweden)

Minghao Zhuang

2018-04-01

Full Text Available Rising CO2 and O3 concentrations significantly affect plant growth and can alter nutrient cycles. However, the effects of elevated CO2 and O3 concentrations on the nutrient dynamics of bamboo species are not well understood. In this study, using open top chambers (OTCs, we examined the effects of elevated CO2 and O3 concentrations on leaf biomass and nutrient (N, P, and K dynamics in two bamboo species, Phyllostachys edulis (Carrière J.Houz. and Oligostachyum lubricum (wen King f. Elevated O3 significantly decreased leaf biomass and nutrient uptake of both bamboo species, with the exception of no observed change in K uptake by O. lubricum. Elevated CO2 increased leaf biomass, N and K uptake of both bamboo species. Elevated CO2 and O3 simultaneously had no significant influence on leaf biomass of either species but decreased P and N uptake in P. edulis and O. lubricum, respectively, and increased K uptake in O. lubricum. The results indicate that elevated CO2 alleviated the damage caused by elevated O3 in the two bamboo species by altering the uptake of certain nutrients, which further highlights the potential interactive effects between the two gases on nutrient uptake. In addition, we found differential responses of nutrient dynamics in the two bamboo species to the two elevated gases, alone or in combination. These findings will facilitate the development of effective nutrient management strategies for sustainable management of P. edulis and O. lubricum under global change scenarios.

The Pan-STARRS Survey for Transients (PSST)

Science.gov (United States)

Huber, Mark; Carter Chambers, Kenneth; Flewelling, Heather; Smartt, Stephen J.; Smith, Ken; Wright, Darryl

2015-08-01

The Pan-STARRS1 (PS1) Science Consortium finished the 3Pi survey of the whole sky north of -30 degrees between 2010-2014 in grizy (PS1 specific filters) and the PS1 telescope has been running a wide-field survey for near earth objects, funded by NASA through the NEO Observation Program. This survey takes data in a w-band (wide-band filter spanning g,r,i) in dark time, and combinations of r, i, z and y during bright time. We are now processing these data through the Pan-STARRS IPP difference imaging pipeline and recovering stationary transients. Effectively the 3Pi survey for transients that started during the PS1 Science Consortium is being continued under the new NEO optimized operations mode. The observing procedure in this case is to take a quad of exposures, typically 30-45 seconds separated by 10-20 minutes each, typically revealing high confidence transients (greater than 5-sigma) to depths of i~ 20.7, y~18.3 (AB mags). This cadence may be repeated on subsequent nights in a return pointing.Continuing the public release of the first 880 transients from the PS1 3Pi survey during the search period September 2013 - January 2014, beginning February 2015, the transient events using the data from the the Pan-STARRS NEO Science Consortium are now regularly added. These are mostly supernova candidates, but the list also contains some variable stars, AGN, and nuclear transients. The light curves are too sparsely sampled to be of standalone use, but they may be of use to the community in combining with existing data (e.g. Fraser et al. 2013, ApJ, 779, L8), constraining explosion and rise times (e.g. Nicholl et al. 2013, Nature, 502, 346) as well as many being new discoveries.For additional details visit http://star.pst.qub.ac.uk/ps1threepi/

Effect of liquid gate bias rising time in pH sensors based on Si nanowire ion sensitive field effect transistors

Science.gov (United States)

Jang, Jungkyu; Choi, Sungju; Kim, Jungmok; Park, Tae Jung; Park, Byung-Gook; Kim, Dong Myong; Choi, Sung-Jin; Lee, Seung Min; Kim, Dae Hwan; Mo, Hyun-Sun

2018-02-01

In this study, we investigate the effect of rising time (TR) of liquid gate bias (VLG) on transient responses in pH sensors based on Si nanowire ion-sensitive field-effect transistors (ISFETs). As TR becomes shorter and pH values decrease, the ISFET current takes a longer time to saturate to the pH-dependent steady-state value. By correlating VLG with the internal gate-to-source voltage of the ISFET, we found that this effect occurs when the drift/diffusion of mobile ions in analytes in response to VLG is delayed. This gives us useful insight on the design of ISFET-based point-of-care circuits and systems, particularly with respect to determining an appropriate rising time for the liquid gate bias.

Electrochemical incineration of p-cresol and o-cresol in the filter-press-type FM01-LC electrochemical cell using BDD electrodes in sulfate media at pH 0

International Nuclear Information System (INIS)

Nava, Jose L.; Nunez, Francisco; Gonzalez, Ignacio

2007-01-01

This work shows a comparative study of the incineration of 2-mM p-cresol and o-cresol in 1 M-H 2 SO 4 in aqueous media. Microelectrolysis studies indicated that both the p-cresol and o-cresol oxidation were carried out via hydroxyl radicals (OH·) formed by water oxidation in the boron-doped diamonds (BDD)-H 2 O-H 2 SO 4 -p-cresol and o-cresol interface. In both cases, the potential and current density ranges, where great amounts of OH· are formed, were between 2.3 V ≤ E ≤ 2.75 V versus SHE and J = 10 mA cm -2 . Electrolyses in an undivided FM01-LC reactor were performed at different Reynolds values 27,129 ≤ Re ≤ 42,631, and at J 10 mA cm -2 . For p-cresol and o-cresol, the rate of degradation was slow, however it increases slightly as a function of the Re, indicating that the oxidation involves a complex pathway; current efficiency also rises as a function of the Re. For p-cresol, the mineralization at Re = 42,631 reached 90%, with 71% current efficiency and an energy consumption of 7.84 kWh m -3 ; whereas o-cresol was mineralized to 84%, with 67% current efficiency and an energy consumption of 6.56 kWh m -3 . The results obtained in this work demonstrated that o-cresol is more recalcitrant than p-cresol

Discovery of a Nonblazar Gamma-Ray Transient Source Near the Galactic Plane: GRO J1838-04

Science.gov (United States)

Tavani, M.; Oliversen, Ronald (Technical Monitor)

2001-01-01

We report the discovery of a remarkable gamma-ray transient source near the Galactic plane, GRO J1838-04. This source was serendipitously discovered by EGRET in 1995 June with a peak intensity of approx. (4 +/- 1) x 10(exp -6) photons/sq cm s (for photon energies larger than 100 MeV) and a 5.9 sigma significance. At that time, GRO J1838-04 was the second brightest gamma-ray source in the sky. A subsequent EGRET pointing in 1995 late September detected the source at a flux smaller than its peak value by a factor of approx. 7. We determine that no radio-loud spectrally flat blazar is within the error box of GRO J1838-04. We discuss the origin of the gamma-ray transient source and show that interpretations in terms of active galactic nuclei or isolated pulsars are highly problematic. GRO J1838-04 provides strong evidence for the existence of a new class of variable gamma-ray sources.

Ionizing Shocks in Argon. Part 2: Transient and Multi-Dimensional Effects (Preprint)

Science.gov (United States)

2010-09-09

stability in ionizing monatomic gases. Part 1. Argon ,” J. Fluid Mech., 84, 55 (1978). 2M. P. F. Bristow and I. I. Glass, “ Polarizability of singly...Article 3. DATES COVERED (From - To) 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER Ionizing Shocks in Argon . Part 2: Transient...Physics. 14. ABSTRACT We extend the computations of ionizing shocks in argon to unsteady and multi-dimensional, using a collisional-radiative

78 FR 3042 - J.P. Morgan Securities LLC, et al.; Notice of Application and Temporary Order

Science.gov (United States)

2013-01-15

... SECURITIES AND EXCHANGE COMMISSION [Release No. IC-30347; 812-14094] J.P. Morgan Securities LLC... entered against J.P. Morgan Securities LLC (``JPMS''), EMC Mortgage, LLC (``EMC''), Bear Stearns Asset... Inc. (``SACO'') and J.P. Morgan Acceptance Corporation I (``JPMAC'') (together, the ``Defendants'') on...

Transient behavior of interface state continuum at InP insulator-semiconductor interface

International Nuclear Information System (INIS)

Hasegawa, H.; Masuda, H.; He, L.; Luo, J.K.; Sawada, T.; Ohno, H.

1987-01-01

To clarify the drain current drift mechanism in InP MISFETs, an isothermal capacitance transient spectroscopy (ICTS) study of the interface state continuum is made on the anodic Al 2 O 3 /native oxide/ InP MIS system. Capture behavior is temperature-independent, non-exponential and extremely slow, whereas emission behavior is temperature- and bias- dependent, and is much faster. The observed behavior is explained quantitatively by the disorder induced gap state (DIGS) model, where states are distributed both in energy and in space. By comparing the transient behavior of interface states with the observed drift behavior of MISFETs, it is concluded that the electron capture by the DIGS continuum is responsible for the drain current drift of MISFETs. This led to a complete computer simulation of the observed current drift behavior

Study of some properties of 's' neutron resonance parameters for target nuclei I = 1/2 and I = 3/2 in function of spin value J = I + 1/2 in the energy range 1 {yields} 5000 eV; Etude de quelques proprietes des parametres de resonances des neutrons ''s'' pour des noyaux cibles I = 1/2 et I = 3/2 en fonction de la valeur du spin J = I + 1/2 dans le domaine d'energie 1 eV {yields} 5000 eV

Energy Technology Data Exchange (ETDEWEB)

Julien, J [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

1967-05-15

Different kinds of experiments and analysis methods allowing to achieve neutron resonances parameters in the low energy range (1 eV {yields} 5000 eV) are described. A great deal of effort to improve experimental conditions and data processing in order to know the spin value J = I {+-} 1/2 has been spent. The time of flight method was used. A few target nuclei I = 3/2 and 1 = 1/2 have been studied. For I = 3/2 (Ga, As, 3r, Au) we find S{sub o} J = 2 {approx_equal} 2 S{sub o} J = 1 and S{sub o} J = 1 {approx_equal} S{sub o} J = 0 for I = 1/2 (Tm, Pt) but {sup 77}Se. Fluctuations of the total radiative width {gamma}{sub {gamma}} depend on the spin value I = I {+-} 1/2 when E1 transition, are enhanced for one of the both spin states. The magnitude of these fluctuations can be explained of the strength of E1 transitions (E{sub {gamma}} {approx} 7 MeV) is supposed to be proportional to E{sup 5}{sub {gamma}} instead of E{sup 3}{sub {gamma}}. The distribution of levels spacings against spin value J are considered and are compared to theoretical predictions. (author) [French] On decrit les differentes methodes d'analyse permettant d'obtenir les parametres des resonances de neutron dans le domaine d'energie 1 eV {yields} 5000 eV. Un effort particulier a ete fait pour connaitre la valeur du spin J = I {+-} 1/2. Les types d'experience et les analyses des donnees, developpes et ameliores pour determiner J sont decrits. Les resultats obtenus ont permis l'etude de differentes proprietes en fonction du spin J. On trouve: S{sub o} J 2 {approx_equal} 2 S{sub o} J = 1 pour les noyaux I = 3/2 etudies (Ga, As, Br, Au) et S{sub o} J = 1 {approx_equal} S{sub o} J = 0 Pour le Tm et {sup 195}Pt de spin I = 1/2. On constate que les largeurs radiatives totales {gamma}{sub {gamma}} fluctuent si des transitions E1 aux premiers etats excites sont favorisees. Ces fluctuations peuvent etre expliquees si on suppose que les intensites de ces transitions sont proportionnelles a E{sup 5}{sub {gamma

Electrochemical incineration of p-cresol and o-cresol in the filter-press-type FM01-LC electrochemical cell using BDD electrodes in sulfate media at pH 0

Energy Technology Data Exchange (ETDEWEB)

Nava, Jose L. [Universidad Autonoma Metropolitana-Iztapalapa, Departamento de Quimica, Av. San Rafael Atlixco No. 186, C.P. 09340, Mexico D.F. (Mexico)]. E-mail: jlnm@xanum.uam.mx; Nunez, Francisco [Universidad Autonoma Metropolitana-Iztapalapa, Departamento de Quimica, Av. San Rafael Atlixco No. 186, C.P. 09340, Mexico D.F. (Mexico); Gonzalez, Ignacio [Universidad Autonoma Metropolitana-Iztapalapa, Departamento de Quimica, Av. San Rafael Atlixco No. 186, C.P. 09340, Mexico D.F. (Mexico)

2007-02-15

This work shows a comparative study of the incineration of 2-mM p-cresol and o-cresol in 1 M-H{sub 2}SO{sub 4} in aqueous media. Microelectrolysis studies indicated that both the p-cresol and o-cresol oxidation were carried out via hydroxyl radicals (OH{center_dot}) formed by water oxidation in the boron-doped diamonds (BDD)-H{sub 2}O-H{sub 2}SO{sub 4}-p-cresol and o-cresol interface. In both cases, the potential and current density ranges, where great amounts of OH{center_dot} are formed, were between 2.3 V {<=} E {<=} 2.75 V versus SHE and J = 10 mA cm{sup -2}. Electrolyses in an undivided FM01-LC reactor were performed at different Reynolds values 27,129 {<=} Re {<=} 42,631, and at J 10 mA cm{sup -2}. For p-cresol and o-cresol, the rate of degradation was slow, however it increases slightly as a function of the Re, indicating that the oxidation involves a complex pathway; current efficiency also rises as a function of the Re. For p-cresol, the mineralization at Re = 42,631 reached 90%, with 71% current efficiency and an energy consumption of 7.84 kWh m{sup -3}; whereas o-cresol was mineralized to 84%, with 67% current efficiency and an energy consumption of 6.56 kWh m{sup -3}. The results obtained in this work demonstrated that o-cresol is more recalcitrant than p-cresol.

Estudo da produção de $J/\\psi$ o experimento ALICE utilizando o calorímetro eletromagnético

CERN Document Server

Figueredo, Marcel Araujo Silva

This work presents the measurement of the J/ production with pT > 5 GeV/c at midrapidity (|y| 6 GeV/c). This work also shows the measurement of the fraction of non-prompt J/ (fB). The results were: fB = 0,267 ± 0,114 (hpT i = 7,15 GeV/c), fB = 0,338 ± 0,116 (hpT i = 10,7 GeV/c), fB = 0,271 ± 0,087 (hpT i = 8,5 GeV/c), which are compatible with ATLAS results. The last study made in this work was the feasility of the measurement of J/ in Pb-Pb collisions for pT > 6 GeV/c, using the EMCal L1 Gamma trigger. Considering events from the centrality region 20-60%, 93 ± 16 J/s were reconstructed.

Sobre a Opinião Pública que já não o é – ao ter deixado de ser propriamente pública e também uma opinião

Directory of Open Access Journals (Sweden)

João Pissarra Esteves

2015-12-01

Full Text Available O conceito sistêmico (N. Luhmann de Opinião Pública tem como propósito assumir uma ruptura com a “velha” tradição (da modernidade do pensamento político ocidental, em nome da complexidade crescente que caracteriza as atuais sociedades funcionalmente diferenciadas. Aqui propomos desenvolver uma discussão dos desafios que um tal conceito coloca a todos os que assumem um envolvimento mais ou menos direto com a comunicação pública, muito em especial para aqueles que o fazem na condição de profissionais desta área de atividade. São identificadas as insuficiências epistemológicas (em termos empíricos, mas também normativos que este conceito apresenta – a Opinião Pública enquanto mera tematização de assuntos, que já não forma realmente qualquer opinião nem é motivo de uma construção propriamente pública; conferindo-se uma atenção mais especial os limites ético-morais com que esta visão inteiramente funcional das nossas sociedades – e da existência humana de um modo mais geral – se debate.

Associação entre marcadores de grupos sangüíneos e produção à primeira lactação em bovinos da raça Gir Leiteiro

Directory of Open Access Journals (Sweden)

Conceição R.O.

2000-01-01

Full Text Available Foram analisados 138 resultados de tipagem sangüínea de animais da raça Gir Leiteiro, pertencentes a uma população fechada submetida a acasalamentos preferenciais por aproximadamente 30 anos. Estudou-se a associação entre os sistemas B, F, J, L e Z de grupos sangüíneos e a produção de leite à primeira lactação. Os resultados mostraram diferença significativa (P<0,001 na produção de leite das primíparas que possuem o fator Z, 3634,43kg, em relação as que não apresentaram o mesmo fator, 3074,62kg. Para o sistema B, por meio de contraste de médias, verificou-se que houve diferença significativa (P<0,05 entre animais com o fenogrupo I1O1Y2A?B?E?3(J?K?P?Q? em homozigose, 4202,86kg, e aqueles com os fenogrupos B(PQTE?3G?P?/I1O1Y2A?B?E?3(J?K?P?Q?, 3493,33kg, e BQTA?B?I?(P?/I1O1Y2A?B?E?3(J?K?P?Q?, 3630,36kg.

Conductometric and pH metric investigations of the oxalic acid and NaAsO2 reaction

Directory of Open Access Journals (Sweden)

MIRJANA V. OBRADOVIC

2008-10-01

Full Text Available The reaction between NaAsO2 and oxalic acid was studied by pH-metric and conductometric measurements, applying the methods of continual variation and pH-metric and conductometric titration. It was found that oxalic acid forms a complex anion of the type [AsOC2O4]-. The relative stability constant of the complex at ionic strengths, I, of 0.10 (log Kr = 4.70, 0.20 (log Kr = 4.51, 0.50 (log Kr = 4.24 and 0 (log K0r = 5.05 and thermodynamic para¬meters were calculated using the data obtained by pH-metric measurements at 25.0±0.1 °C (DH = 10.5 kJ mol-1, DG = –29.0 kJ mol-1, DS = 133 J mol-1 K-1.

MAXI J1659-152: The shortest orbital period black-hole transient in outburst

DEFF Research Database (Denmark)

Kuulkers, E.; Kouveliotou, C.; Belloni, T.

2013-01-01

MAXI J1659−152 is a bright X-ray transient black-hole candidate binary system discovered in September 2010. We report here on MAXI, RXTE, Swift, and XMM-Newton observations during its 2010/2011 outburst. We find that during the first one and a half week of the outburst the X-ray light curves disp...

Methimazole, but not betamethasone, prevents 131I treatment-induced rises in thyrotropin receptor autoantibodies in hyperthyroid Graves' disease

International Nuclear Information System (INIS)

Gamstedt, A.; Wadman, B.; Karlsson, A.

1986-01-01

The effects of methimazole or betamethasone therapy on the TSH receptor antibody response to radioiodine therapy were compared in a prospective randomized study of 60 patients with hyperthyroidism due to Graves' disease. The patients were followed for 1 yr after treatment with 131I. Twenty-three patients received 131I alone, 17 were treated with methimazole for 2 months before and 3 months after 131I therapy, and 20 patients were treated with betamethasone for 3 weeks before and 4 weeks after 131I therapy. 131I induced a transient rise in the mean serum level of TSH receptor autoantibodies, measured as TSH binding inhibitory immunoglobulin (TBII), but in patients receiving methimazole treatment, no such rise occurred. In the betamethasone-treated patients, TBII increased similarly to that in patients treated with 131I alone. In addition, in patients given betamethasone, there was an early decrease in total serum immunoglobulin G, which persisted throughout the follow-up period. In the other 2 groups, no changes in total immunoglobulin G were found. The results demonstrate that in hyperthyroid Graves' disease, TBII production is influenced by therapy. Methimazole abolished the 131I-induced increase in TBII, whereas betamethasone did not have such an inhibitory effect

Preliminary analysis of typical transients in fusion driven subcritical system (FDS-I)

International Nuclear Information System (INIS)

Bai Yunqing; Ke Yan; Wu Yican

2007-01-01

The potential safety characteristic is expected as one of the advantages of fusion-driven subcritical system (FDS-I) for the transmutation and incineration of nuclear waste compared with the critical reactor. Transients of the FDS-I may occur due to the perturbation of external neutron source, the failure of functional device, and the occurrence of the uncontrolled event. As typical transient scenarios, the following cases were analyzed: unprotected plasma overpower (UPOP), unprotected loss of flow (ULOF), unprotected transient overpower (UTOP). The transient analyses for the FDS-I were performed with a coupled two-dimensional thermal-hydraulics and neutronics transient analysis code NTC2D. The negative feedback of reactivity is the interesting safety feature of FDS-I as temperature increase, due to the fuel form of the circulating particle. The present simulation results showed that the current FDS-I design has a resistance against severe transient scenarios. (author)

Green's function for a switched plasma medium and a perturbation technique for the study of wave propagation in a transient plasma with a small rise time

International Nuclear Information System (INIS)

Kalluri, D.K.

1996-01-01

The main effect of switching a medium (creating a temporal discontinuity in the properties of a medium) is the splitting of the source (incident) wave into new waves whose frequencies are different. Lightning induced effects in the ionosphere cause a temporary enhancement of ionization. Such transient plasmas have a time-varying plasma frequency ω p (t) with a rise time T r . If the period t 0 of a source wave existing before the transient effect begins is much larger than the rise time, the ionization change may be idealized as a sudden switching of the medium. The solution to this initial value problem with a step-change in the electron density profile is known and this profile will be considered as a reference profile. The topic of this paper is the solution of the initial value problem when t 0 is comparable to the rise time T r . The initial motivation for investigating the problem is given below. There is considerable interest in the ionospheric physics community to investigate the recently discovered Sprites phenomenon which are red emissions in the lower D region induced by the lightning discharges from a cloud to the ground. The preliminary indications are that the Sprite is a plasma with electron density enhanced by about 10 1 to 10 3 /cc in a rise time of about 100 micros

Optimization of the thermodynamic properties and phase diagrams of P2O5-containing systems

Science.gov (United States)

Hudon, Pierre; Jung, In-Ho

2014-05-01

P2O5 is an important oxide component in the late stage products of numerous igneous rocks such as granites and pegmatites. Typically, P2O5 combines with CaO and crystallizes in the form of apatite, while in volatile-free conditions, Ca-whitlockite is formed. In spite of their interest, the thermodynamic properties and phase diagrams of P2O5-containg systems are not well known yet. In the case of the pure P2O5 for example, no experimental thermodynamic data are available for the liquid and the O and O' solid phases. As a result, we re-evaluated all the thermodynamic and phase diagram data of the P2O5 unary system [1]. Optimization of the thermodynamic properties and phase diagrams of the binary P2O5 systems was then performed including the Li2O-, Na2O-, MgO-, CaO-, BaO-, MnO-, FeO-, Fe2O3-, ZnO-, Al2O3-, and SiO2-P2O5 [2] systems. All available thermodynamic and phase equilibrium data were simultaneously reproduced in order to obtain a set of model equations for the Gibbs energies of all phases as functions of temperature and composition. In particular, the Gibbs energy of the liquid solution was described using the Modified Quasichemical Model [3-5] implemented in the FactSage software [6]. Thermodynamic modeling of the Li2O-Na2O-K2O-MgO-CaO-FeO-Fe2O3-Al2O3-SiO2 system, which include many granite-forming minerals such as nepheline, leucite, pyroxene, melilite, feldspar and spinel is currently in progress. [1] Jung, I.-H., Hudon, P. (2012) Thermodynamic assessment of P2O5. J. Am. Ceram. Soc., 95 (11), 3665-3672. [2] Rahman, M., Hudon, P. and Jung, I.-H. (2013) A coupled experimental study and thermodynamic modeling of the SiO2-P2O5 system. Metall. Mater. Trans. B, 44 (4), 837-852. [3] Pelton, A.D. and Blander, M. (1984) Computer-assisted analysis of the thermodynamic properties and phase diagrams of slags. Proc. AIME Symp. Metall. Slags Fluxes, TMS-AIME, 281-294. [4] Pelton, A.D. and Blander, M. (1986) Thermodynamic analysis of ordered liquid solutions by a modified

Observation of J/ψp resonances consistent with pentaquark states in Λb→J/ψpK- decays at LHCb

CERN Multimedia

CERN. Geneva

2015-01-01

It has now been over 50 years since the inception of the quark model. The original papers by Gell-Mann and Zweig included the description of the now well known three-quark baryons and quark-antiquark mesons. They also included the possibility of "exotic" hadrons, such as mesons containing two quarks and two antiquarks (tetraquarks), or four quarks and an antiquark (pentaquarks). There is no clear reason why such exotic combinations of quarks should not exist. Indeed, in recent years strong tetraquark candidates have been discovered. However, until recently the observation of any lasting pentaquark candidates had eluded all searches. Using the LHCb Run 1 dataset, two J/ψp resonances consistent with pentaquark states have been observed in Λb→J/ψpK- decays. I will describe a full amplitude analysis which was performed in order to be most sensitive to the underlying physics and best study the resonant nature of these states. These states are overwhelmingly significant, and mark the first convincing observati...

M. I. T. studies of transient X-ray phenomena

Energy Technology Data Exchange (ETDEWEB)

Canizares, C R [Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Physics

1976-06-01

A variety of transient X-ray phenomena have been studied by the M.I.T. X-ray Astronomy Group. Data from the OSO-7 satellite reveal both long and short time-scale transients. Extensive observations have been made of the Lupus X-ray Nova (3U1543-47) and of GX339-4 (MX1658-48) which may represent a very different type of transient source. A unique, intense X-ray flare lasting ten minutes was also recorded, and the X-ray emission from the active galaxy Cen A was found to vary significantly over a period of several days. In a recent balloon flight the Crab pulsar, NP0532, was observed to exhibit a transient pulsed component distinct from the usual main pulse and interpulse. A sounding-rocket experiment detected an ultrasoft transient X-ray source tentatively associated with SS Cygni, and preliminary results from SAS-3 show a very hard spectrum for the new source A0535+26. On the other hand, extensive OSO-7 null observations of both Type I and II supernovae and of the flaring radio star Algol make it unlikely that these types of objects are potent transient X-ray emitters.

Control of ZnO Nanorod Defects to Enhance Carrier Transportation in p-Cu₂O/i-ZnO Nanorods/n-IGZO Heterojunction.

Science.gov (United States)

Ke, Nguyen Huu; Trinh, Le Thi Tuyet; Mung, Nguyen Thi; Loan, Phan Thi Kieu; Tuan, Dao Anh; Truong, Nguyen Huu; Tran, Cao Vinh; Hung, Le Vu Tuan

2017-01-01

The p-Cu₂O/i-ZnO nanorods/n-IGZO heterojunctions were fabricated by electrochemical and sputtering method. ZnO nanorods were grown on conductive indium gallium zinc oxide (IGZO) thin film and then p-Cu₂O layer was deposited on ZnO nanorods to form the heterojunction. ZnO nanorods play an important role in carrier transport mechanisms and performance of the junction. The changing of defects in ZnO nanorods by annealing samples in air and vacuum have studied. The XRD, photoluminescence (PL) spectroscopy, and FTIR were used to study about structure, and defects in ZnO nanorods. The SEM, i–V characteristics methods were also used to define structure, electrical properties of the heterojunctions layers. The results show that the defects in ZnO nanorods affected remarkably on performance of heterojunctions of solar cells.

Method of construction of transient from a cycle of neuronal recurrence equation

International Nuclear Information System (INIS)

Ndoundam, R.; Tchuente, M.

2005-11-01

We study the sequences generated by neuronal recurrence equations of the form x(n) = 1[Σ j k =1 a j x(n - j) - θ], where k is the size of memory (k represents the number of previous states x(n - 1), x(n - 2), ...,x(n - k) which intervene in the calculation of x(n)). We are interested in the number of steps (transient length) from an initial configuration to the cycle. We propose a method of construction of transient from a cycle generated by neuronal recurrence equation. We apply this method to build a neuronal recurrence equation with inhibitory memory of size (s+1)6m, whose dynamics contains an evolution of transient length (s + 1) x (5m + 2 + lcm(p 0 , p 1 , ..., p 1 , 3m - 1)) and a cycle of length (s + 1) x lcm(p 0 , p 1 , ..., p s-1 , 2m + 1) where lcm denotes the least common multiple, and p 0 , p 1 , ..., p s-1 are prime numbers lying between 2m and 3m. (author)

The interference effects in the alignment and orientation of the Kr II 4p45p states following Kr I 3d9np resonance excitation

International Nuclear Information System (INIS)

Lagutin, B M; Petrov, I D; Sukhorukov, V L; Demekhin, Ph V; Zimmermann, B; Mickat, S; Kammer, S; Schartner, K-H; Ehresmann, A; Shutov, Yu A; Schmoranzer, H

2003-01-01

The energy dependence of the alignment parameter A 20 for the Kr II 4p 4 5p(E 1 J 1 ) states following excitation in the Raman regime with the exciting-photon energy passing through the Kr I 3dJ 9 barnpjbar resonances was investigated theoretically and experimentally. Interference between the resonance and direct photoionization channels explains the dependence of A 20 on the excitation energy. Experimentally, A 20 was determined after the analysis of 5p-5s fluorescence decay of the 4p 4 5p(E 1 J 1 ) states excited with monochromatized synchrotron radiation. The band pass of the synchrotron radiation was set to 10 meV which is smaller than the natural width of the 3d 9 np resonances (∼83 meV). Additionally, a strong energy dependence was predicted for the orientation parameter O 10 as well as for the angular distribution parameter of photoelectrons, β e , for several 4p 4 5p(E 1 J 1 ) ionic states

Atucha I nuclear power plant transients analysis

International Nuclear Information System (INIS)

Castano, J.; Schivo, M.

1987-01-01

A program for the transients simulation thermohydraulic calculation without loss of coolant (KWU-ENACE development) to evaluate Atucha I nuclear power plant behaviour is used. The program includes systems simulation and nuclear power plants control bonds with real parameters. The calculation results show a good agreement with the output 'protocol' of various transients of the nuclear power plant, keeping the error, in general, lesser than ± 10% from the variation of the nuclear power plant's state variables. (Author)

The optical counterpart of the bright X-ray transient Swift J1745-26

NARCIS (Netherlands)

Muñoz-Darias, T.; de Ugarte Postigo, A.; Russell, D.M.; Guziy, S.; Gorosabel, J.; Casares, J.; Armas Padilla, M.; Charles, P.A.; Fender, R.P.; Belloni, T.M.; Lewis, F.; Motta, S.; Castro-Tirado, A.; Mundell, C.G.; Sánchez-Ramirez, R.; Thöne, C.C.

2013-01-01

We present a 30-day monitoring campaign of the optical counterpart of the bright X-ray transient Swift J1745−26, starting only 19 min after the discovery of the source. We observe the system peaking at i′ ∼ 17.6 on day six (MJD 561 92) to then decay at a rate of ∼0.04 mag d−1. We show that the

Mitochondrial function in type I cells isolated from rabbit arterial chemoreceptors.

Science.gov (United States)

Duchen, M R; Biscoe, T J

1992-05-01

1. In this, and the accompanying paper (Duchen & Biscoe, 1992), we test the hypothesis that the oxygen sensitivity of mitochondrial electron transport forms a basis for transduction in the carotid body, the primary peripheral arterial oxygen sensor. We here describe for isolated type I cells the changes in autofluorescence of mitochondrial NAD(P)H that accompany changes in PO2. 2. NAD(P)H autofluorescence (excitation, 340-360 nm; emission peak, 450 nm) increased with anoxia, reflecting a rise in the NAD(P)H/NAD(P) ratio. Graded increases in autofluorescence were seen in response to graded decreases in PO2, suggesting that mitochondrial function is progressively altered below a PO2 of about 60 mmHg. 3. A mitochondrial origin for the NAD(P)H autofluorescence was suggested by the mutual exclusion of the responses to anoxia and cyanide. 4. Oxidized flavoproteins fluoresce when excited at 450 nm with an emission peak at 550 nm. The small signals obtained under these conditions increased with uncoupler and showed a graded decrease with falling PO2 reflecting a rise in the FADH/FAD ratio. 5. Hypoxia raises [Ca2+]i. The hypoxia-induced changes in mitochondrial function were not secondary to this rise. A brief K(+)-induced depolarization leads to a transient increase in [Ca2+]i. At the same time there is a rapid decrease in NAD(P)H autofluorescence followed by an increase that far outlasts the rise in [Ca2+]i. This delayed increase in autofluorescence was smaller than was the increase with anoxia, even though K(+)-induced depolarization raised [Ca2+]i more than does anoxia. In Ca(2+)-free solutions the depolarization-induced changes were abolished, while those associated with hypoxia were maintained. 6. The changes of autofluorescence with K(+)-induced depolarization appear to reflect (i) oxidation of NAD(P)H by stimulation of respiration following mitochondrial Ca2+ uptake and (ii) reduction of NAD(P) by the Ca(2+)-dependent activation of mitochondrial dehydrogenases. This

A new hard X-ray transient discovered by INTEGRAL: IGR J17559-2612

DEFF Research Database (Denmark)

Esposito, V.; Ferrigno, C.; Bozzo, E.

2012-01-01

/ISGRI spectrum can be described (χ2red/d.o.f.=0.4 for 8 d.o.f.) by a power-law (Γ=1.6 ± 0.3, uncertainty at 90% c.l.). The 20-100 keV flux estimated from the spectral fit is 3.0 × 10-10 erg/s/cm2 (18 mCrab). Multi-wavelength follow-up observations are encouraged to unveil the nature of this transient.......V and the 40-80 keV energy bands. The corresponding fluxes are 11.9±1.4 mCrab and 17.5±2.1 mCrab (9.2±1.1 × 10-11 and 1.21±0.14 × 10-10 erg/s/cm2, uncertainties are at 68% c.l.). Due to off-axis pointing, the source is not detected in the combined mosaic of the two JEM-X units with a 3σ upper limits of 15...... and 20 mCrab in the 3-10 keV and 10-20 keV energy bands, respectively. The best source position determined with IBIS is RA= 268.99 (17h 55m 58s) Dec= -26.21 (-26d 12' 36") (J2000) with an associated pointing uncertainty of 3.5 arcmin at 90% c.l. (the Galactic coordinates are l= 3.515 b=-0.572). The IBIS...

Fabrication of Au_n_a_n_o_p_a_r_t_i_c_l_e@mSiO_2@Y_2O_3:Eu nanocomposites with enhanced fluorescence

International Nuclear Information System (INIS)

Li, Huiqin; Kang, Jianmiao; Yang, Jianhui; Wu, Biao

2016-01-01

Herein, Au_n_a_n_o_p_a_r_t_i_c_l_e@mSiO_2@Y_2O_3:Eu nanocomposites are synthesized through layer-by-layer assembly technology. Au_n_a_n_o_p_a_r_t_i_c_l_e@mSiO_2 core–shell nanospheres were prepared at first in the presence of CTAB in aqueous solution system by the modified one-pot method. A chemical precipitation method and a succeeding calcination process were adopted to the growth of Y_2O_3:Eu shells on the surfaces of Au_n_a_n_o_p_a_r_t_i_c_l_e@mSiO_2 core–shell nanospheres. The structure, morphology and composition of the nanocomposites were confirmed by XRD, TEM and UV–vis absorption spectrum. The prepared Au_n_a_n_o_p_a_r_t_i_c_l_e@mSiO_2@Y_2O_3:Eu nanocomposites have showed the emission intensity enhances to 6.23 times at 30 nm thickness of the silica spacer between the core of Au nanoparticle and the shell of Y_2O_3:Eu. According to the observations of fluorescent lifetime and the modeling of local electric field, the metal-enhanced and quenched fluorescence is closely related with the enhancement of excitation and radiative decay rate and the quenching by NRET comes as a result of competition between the distance-dependent mechanisms. This kind of multifunctional inorganic material will be widely used in electronics, biology and medical drug loading, etc. - Highlights: • Fabrication of Au_n_a_n_o_p_a_r_t_i_c_l_e@mSiO_2@Y_2O_3:Eu nanocomposites with core-spacer-shell structure. • The controllable fluorescence is achieved by adjusting the spacer thickness of silica. • The fluorescence enhancement is 6.23-fold at an optimal spacer thickness about 30 nm. • The metal-enhanced fluorescence mechanism is proposed.

Enwereji, J.O.

African Journals Online (AJOL)

Enwereji, J.O.. Vol 19, No 6 (2016) - Articles Morbidities, concordance, and predictors of preterm premature rupture of membranes among pregnant women at the University of Nigeria Teaching Hospital (UNTH), Enugu, Nigeria Abstract PDF. ISSN: 1119-3077. AJOL African Journals Online. HOW TO USE AJOL.

Kinetics of the Reactions of O((sup 3)P) and Cl((sup 2)P) with HBr and Br2

Science.gov (United States)

Nicovich, J. M.; Wine, P. H.

1997-01-01

A laser flash photolysis-resonance fluorescence technique has been employed to study the kinetics of reactions (1)-(4) as a function of temperature. (1) O((sup 3)P) + Br2 yields BrO + Br((sup 2)P(sub 3/2)) at 255-350 K; (2) Cl((sup 2)P) + Br2 yields BrCl + Br((sup 2)P(sub 3/2)) at 298-401 K; (3) O((sup 3)P) + HBr yields OH + Br((sup 2)P(sub J)) at 250-402 K; (4) Cl((sup 2)P) + HBr yields HCl + Br((sup 2)P(sub J)) at 257-404 K. In all cases, the concentration of the excess reagent, i.e, HBr or Br2, was measured in situ in the slow flow system by UV-visible photometry. Heterogeneous dark reactions between XBr (X equals H or Br) and the photolytic precursors for Cl((sup 2)P) and O((sup 3)P) (Cl2 and O3, respectively) were avoided by injecting minimal amounts of precursor into the reaction mixture immediately upstream from the reaction zone. The following Arrhenius expressions summarize our results (errors are 2 sigma and represent precision only, units are cu cm/(molecule.s): k(sub 1) = (1.76 +/- 0.80) x 10(exp -11 exp[(40 +/- 100)/T]; k(sub 2) = (2.40 +/- 1.25) x 12(exp -10) exp[-(144 +/- 176)/T]; k(sub 3) = (5.11 +/- 2.82) x 10(exp -12) exp[-(1450 +/- 160)/T]; k(sub 4) = (2.25 +/- 0.56) x 10(exp -11) exp[-(400 +/- 80)/T]. The consistency (or lack thereof) of our results with those reported in previous kinetics and dynamics studies of reactions (1)-(4) is discussed.

Development of MCP transient operation strategy for the SMART-P

International Nuclear Information System (INIS)

Yoo, S. E.; Choi, B. S.; Kang, H. O.; Yoon, J. H.; Ji, S. K.

2003-01-01

SMART-P MCP(Main Coolant Pump) transient operation strategies are developed. A Modular Modeling System (MMS) computer code is used for the evaluation of the developed operation strategies. In the SMART-P, normal operating modes are classified into MCP high speed(3600 rpm) mode and MCP low speed mode. Also, natural circulation mode is defined as a performance test case. MCP operation transients occur when changing modes from one to another, and system parameters(core power, system pressure, temperature) are having transients. These transients affect on system performance and, in some cases, limit system operation. In this study, MCP operation strategies are developed and obtained acceptable results

Ecotoxicity of two organophosphate pesticides chlorpyrifos and dichlorvos on non-targeting cyanobacteria Microcystis wesenbergii.

Science.gov (United States)

Sun, Kai-Feng; Xu, Xiang-Rong; Duan, Shun-Shan; Wang, You-Shao; Cheng, Hao; Zhang, Zai-Wang; Zhou, Guang-Jie; Hong, Yi-Guo

2015-10-01

Organophosphate pesticides (OPs), as a replacement for the organochlorine pesticides, are generally considered non-toxic to plants and algae. Chlorpyrifos and dichlorvos are two OPs used for pest control all over the world. In this study, the dose-response of cyanobacteria Microcystis wesenbergii on OPs exposure and the stimulating effect of OPs with and without phosphorus source were investigated. The results showed that high concentrations of chlorpyrifos and dichlorvos caused significant decrease of chlorophyll a content. The median inhibitory concentrations (EC50) of chlorpyrifos and dichlorvos at 96 h were 15.40 and 261.16 μmol L(-1), respectively. Growth of M. wesenbergii under low concentration of OPs (ranged from 1/10,000 to 1/20 EC50), was increased by 35.85 % (chlorpyrifos) and 41.83 % (dichlorvos) at 120 h, respectively. Correspondingly, the highest enhancement on the maximum quantum yield (F v/F m) was 4.20 % (24 h) and 9.70 % (48 h), respectively. Chlorophyll fluorescence kinetics, known as O-J-I-P transients, showed significant enhancements in the O-J, J-I, and I-P transients under low concentrations of dichlorvos at 144 h, while enhancements of chlorophyll fluorescence kinetics induced by low concentrations of chlorpyrifos were only observed in the J-I transient at 144 h. Significant decreases of chlorophyll content, F v/F m and O-J-I-P transients with OPs as sole phosphorus source were found when they were compared with inorganic phosphate treatments. The results demonstrated an evidently hormetic dose-response of M. wesenbergii to both chlorpyrifos and dichlorvos, where high dose (far beyond environmental concentrations) exposure caused growth inhibition and low dose exposure induced enhancement on physiological processes. The stimulating effect of two OPs on growth of M. wesenbergii was negligible under phosphate limitation.

Black hole and neutron star soft X-ray transients: a hard X-ray view of their outbursts

International Nuclear Information System (INIS)

Yu, W.

2004-01-01

The RXTE public observations of the outbursts of black hole soft X-ray transients XTE J1550-564, XTE J1859+226, 4U 1630-47, XTE J1118+480, XTE J1650-500, and the neutron star soft X-ray transients 4U 1608-52, Aquila X-1, including a variable 'persistent' neutron star low mass X-ray binary 4U 1705-44, are summarized in this paper. The hard X-ray view of those outbursts, which is quite different from that of the soft X-ray band, suggests that there are several types of outbursts which result in different hard X-ray outburst profile - the outburst profiles are energy dependent. One type is the low/hard state outbursts, the other type is the outburst showing transitions from the low/hard state to the high/soft state, or to the intermediate or to the very high state. The later has an initial low/hard state, introducing the phenomena that the hard X-ray precedes the soft X-ray in the outburst rise. Such outbursts in XTE J1550-564, Aql X-1 and 4U 1705-44 support a two-accretion-flow model which involves one Keplerian disk flow and one sub-Keplerian flow for the initial outburst rise

Experimental results on J/psi production by πsup(+-), Ksup(+-), p and anti p incident on hydrogen at 39.5 GeV/c

International Nuclear Information System (INIS)

Corden, M.J.; Dowell, J.D.; Garvey, J.; Homer, R.J.; Jobes, M.; Kenyon, I.R.; McMahon, T.; Owen, R.C.; Sumorok, K.C.T.; Vallance, R.J.

1981-01-01

J/psi production at 40 GeV/c by πsup(+-), Ksup(+-), p and anti p incident on hydrogen has been studied and results compared with those obtained on tungsten in the same experiment. On hydrogen, J/psi cross-section ratios relative to π - have been measured to be (for xsub(F) > 0) sigma(π - ) : sigma(π + ) : sigma(anti p) : sigma(p) = 1 : (0.78 +- 0.09) : (0.83 +- 0.35) : (0.07 +- 0.04). The suppression of the proton induced cross sections shows the importance of calence quark-antiquark fusion in J/psi production at this energy (i.e., M 2 sub(J)sub(/)sub(psi)/s = 0.13). (orig.)

Efficacy of Fe(o,o-EDDHA) and Fe(o,p-EDDHA) isomers in supplying Fe to strategy I plants differs in nutrient solution and calcareous soil.

Science.gov (United States)

Rojas, Carmen L; Romera, Francisco J; Alcántara, Esteban; Pérez-Vicente, Rafael; Sariego, Cristina; Garcaí-Alonso, J Ignacio; Boned, Javier; Marti, Gabriel

2008-11-26

The FeEDDHA [iron(3+) ethylenediamine di(o-hydroxyphenylacetic) acid] is one of the most efficient iron chelates employed in the correction of iron clorosis in calcareous soils. FeEDDHA presents different positional isomers: the ortho-ortho (o,o), the ortho-para (o,p), and the para-para (p,p). Of these isomers, the p,p cannot chelate Fe in soil solution in a wide range of pH values, while both o,o and o,p can. The objective of this work was to compare the efficiency of both isomers (o,o and o,p) to provide Fe to two Strategy I plants (tomato and peach) in nutrient solution (pH approximately 6.0), as well as in calcareous soil (pH approximately 8.4; CALCIXEREPT). For this, chelates of both o,o-EDDHA and o,p-EDDHA with 57Fe (a nonradioactive isotope of Fe) were used, where the 57Fe acts as a tracer. The results obtained showed that the o,o isomer is capable of providing sufficient Fe to plants in both nutrient solution and calcareous soil. However, the o,p isomer is capable of providing sufficient Fe to plants in nutrient solution but not in calcareous soil.

Scanning transient current study of the I-V stabilization phenomena in silicon detectors irradiated by fast neutrons

International Nuclear Information System (INIS)

Eremin, V.; Verbitskaya, E.; Sidorov, A.; Fretwurst, E.; Lindstrom, G.

1996-03-01

Investigation of the I-V stabilization phenomena in neutron irradiated silicon detectors has been carried out using scanning transient current technique (STCT) on non-irradiated PP + -p-n + detectors. The PP + -p-n + detectors were used to simulate the PP + -n-n + detectors irradiated beyond the space charge sign inversion (SCSI). Two mechanisms partially responsible for the I- V stabilization have been identified

High contrast high intensity petawatt J-KAREN-P laser facility at QST

Science.gov (United States)

Nishiuchi, Mamiko; Kiriyama, Hiromitsu; Sakaki, Hironao; Dover, Nicholas P.; Kondo, Kotaro; Pirozhkov, Alexander S.; Sagisaka, Akito; Fukuda, Yuji; Nishitani, Keita; Miyahara, Takumi; Ogura, Koichi; Alkhimova, Mariya A.; Pikuz, Tatiana A.; Faenov, Anatoly Y.; Watanabe, Yukinobu; Koga, James; Bulanov, Sergei V.; Kando, Masaki; Kondo, Kiminori

2017-05-01

We report on the J-KAREN-P laser facility at QST, which can provide PW peak power at 0.1 Hz on target. The system can deliver short pulses with an energy of 30 J and pulse duration of 30 fs after compression with a contrast level of better than 1012. Such performance in high field science will give rise to the birth of new applications and breakthroughs, which include relativistic particle acceleration, bright x-ray source generation, and nuclear activation. The current achieved laser intensity on target is up to > 9x1021 Wcm-2 with an energy of 9 J on target. The interaction with a 3 to 5- μm stainless steel tape target provides us electrons with a typical temperature of more than 10 MeV and energetic proton beams with typical maximum energies of > 40 MeV with good reproducibility. The protons are accelerated in the Target Normal Sheath Acceleration regime, which is suitable for many applications including as an injector into a beamline for medical use, which is one of our objectives.

Transient infrared absorption of t-CH3C(O)OO, c-CH3C(O)OO, and α-lactone recorded in gaseous reactions of CH3CO and O2

Science.gov (United States)

Chen, Sun-Yang; Lee, Yuan-Pern

2010-03-01

A step-scan Fourier-transform infrared spectrometer coupled with a multipass absorption cell was utilized to monitor the transient species produced in gaseous reactions of CH3CO and O2; IR absorption spectra of CH3C(O)OO and α-lactone were observed. Absorption bands with origins at 1851±1, 1372±2, 1169±6, and 1102±3 cm-1 are attributed to t-CH3C(O)OO, and those at 1862±3, 1142±4, and 1078±6 cm-1 are assigned to c-CH3C(O)OO. A weak band near 1960 cm-1 is assigned to α-lactone, cyc-CH2C(O)O, a coproduct of OH. These observed rotational contours agree satisfactorily with simulated bands based on predicted rotational parameters and dipole derivatives, and observed vibrational wavenumbers agree with harmonic vibrational wavenumbers predicted with B3LYP/aug-cc-pVDZ density-functional theory. The observed relative intensities indicate that t-CH3C(O)OO is more stable than c-CH3C(O)OO by 3±2 kJ mol-1. Based on these observations, the branching ratio for the OH+α-lactone channel of the CH3CO+O2 reaction is estimated to be 0.04±0.01 under 100 Torr of O2 at 298 K. A simple kinetic model is employed to account for the decay of CH3C(O)OO.

Transient infrared absorption of t-CH3C(O)OO, c-CH3C(O)OO, and alpha-lactone recorded in gaseous reactions of CH3CO and O2.

Science.gov (United States)

Chen, Sun-Yang; Lee, Yuan-Pern

2010-03-21

A step-scan Fourier-transform infrared spectrometer coupled with a multipass absorption cell was utilized to monitor the transient species produced in gaseous reactions of CH(3)CO and O(2); IR absorption spectra of CH(3)C(O)OO and alpha-lactone were observed. Absorption bands with origins at 1851+/-1, 1372+/-2, 1169+/-6, and 1102+/-3 cm(-1) are attributed to t-CH(3)C(O)OO, and those at 1862+/-3, 1142+/-4, and 1078+/-6 cm(-1) are assigned to c-CH(3)C(O)OO. A weak band near 1960 cm(-1) is assigned to alpha-lactone, cyc-CH(2)C(=O)O, a coproduct of OH. These observed rotational contours agree satisfactorily with simulated bands based on predicted rotational parameters and dipole derivatives, and observed vibrational wavenumbers agree with harmonic vibrational wavenumbers predicted with B3LYP/aug-cc-pVDZ density-functional theory. The observed relative intensities indicate that t-CH(3)C(O)OO is more stable than c-CH(3)C(O)OO by 3+/-2 kJ mol(-1). Based on these observations, the branching ratio for the OH+alpha-lactone channel of the CH(3)CO+O(2) reaction is estimated to be 0.04+/-0.01 under 100 Torr of O(2) at 298 K. A simple kinetic model is employed to account for the decay of CH(3)C(O)OO.

ELM-induced transient tungsten melting in the JET divertor

International Nuclear Information System (INIS)

Coenen, J.W.; Clever, M.; Knaup, M.; Arnoux, G.; Matthews, G.F.; Balboa, I.; Meigs, A.; Bazylev, B.; Autricque, A.; Dejarnac, R.; Horacek, J.; Komm, M.; Coffey, I.; Corre, Y.; Gauthier, E.; Devaux, S.; Krieger, K.; Frassinetti, L.; Jachmich, S.; Marsen, S.

2015-01-01

The original goals of the JET ITER-like wall included the study of the impact of an all W divertor on plasma operation (Coenen et al 2013 Nucl. Fusion 53 073043) and fuel retention (Brezinsek et al 2013 Nucl. Fusion 53 083023). ITER has recently decided to install a full-tungsten (W) divertor from the start of operations. One of the key inputs required in support of this decision was the study of the possibility of W melting and melt splashing during transients. Damage of this type can lead to modifications of surface topology which could lead to higher disruption frequency or compromise subsequent plasma operation. Although every effort will be made to avoid leading edges, ITER plasma stored energies are sufficient that transients can drive shallow melting on the top surfaces of components. JET is able to produce ELMs large enough to allow access to transient melting in a regime of relevance to ITER. Transient W melt experiments were performed in JET using a dedicated divertor module and a sequence of I P  = 3.0 MA/B T  = 2.9 T H-mode pulses with an input power of P IN  = 23 MW, a stored energy of ∼6 MJ and regular type I ELMs at ΔW ELM  = 0.3 MJ and f ELM  ∼ 30 Hz. By moving the outer strike point onto a dedicated leading edge in the W divertor the base temperature was raised within ∼1 s to a level allowing transient, ELM-driven melting during the subsequent 0.5 s. Such ELMs (δW ∼ 300 kJ per ELM) are comparable to mitigated ELMs expected in ITER (Pitts et al 2011 J. Nucl. Mater. 415 (Suppl.) S957–64). Although significant material losses in terms of ejections into the plasma were not observed, there is indirect evidence that some small droplets (∼80 µm) were released. Almost 1 mm (∼6 mm 3 ) of W was moved by ∼150 ELMs within 7 subsequent discharges. The impact on the main plasma parameters was minor and no disruptions occurred. The W-melt gradually moved along the leading edge towards the high-field side, driven by j

Prezident ne provozglasil zakon o tserkvahh i prihodahh... i provozglasil popravki v zakon o teleradioveshtshanii

Index Scriptorium Estoniae

2002-01-01

President Arnold Rüütel jättis välja kuulutamata Kirikute ja koguduste seaduse ja kuulutas välja Ringhäälinguseaduse muutmise seaduse. Pealk. ajalehes Sillamjaeskii Vestnik (2002/Jan/8): "Prezident Estonii Arnold Rüütel reshil ne provozglashat zakon o tserkvahh i prihodahh", lk. 2

Three-dimensional Ag2O/Bi5O7I p-n heterojunction photocatalyst harnessing UV-vis-NIR broad spectrum for photodegradation of organic pollutants.

Science.gov (United States)

Chen, Yannan; Zhu, Gangqiang; Hojamberdiev, Mirabbos; Gao, Jianzhi; Zhu, Runliang; Wang, Chenghui; Wei, Xiumei; Liu, Peng

2018-02-15

Ag 2 O nanoparticles-loaded Bi 5 O 7 I microspheres forming a three dimensional Ag 2 O/Bi 5 O 7 I p-n heterojunction photocatalyst with wide-spectrum response were synthesized in this study. The results of transmission electron microscopy observations revealed that the Ag 2 O nanoparticles with the diameter of ca. 10-20nm were distributed on the surfaces of Bi 5 O 7 I nanosheets. The as-synthesized Ag 2 O/Bi 5 O 7 I exhibited an excellent wide-spectrum response to wavelengths ranging from ultraviolet (UV) to near-infrared (NIR), indicating its potential for effective utilization of solar energy. Compared with pure Bi 5 O 7 I, the Ag 2 O/Bi 5 O 7 I composite also demonstrated excellent photocatalytic activity for the degradation of Bisphenol A and phenol in aqueous solution under visible LED light irradiation. Among samples, the 20% Ag 2 O/Bi 5 O 7 I composite photocatalyst showed the highest photocatalytic activity for the degradation of Bisphenol A and phenol in aqueous solution. In addition, the 20% Ag 2 O/Bi 5 O 7 I composite also exhibited a photocatalytic activity for the degradation of Bisphenol A under NIR light irradiation. The improved photocatalytic activity is attributed to the formation of a p-n heterojunction between Ag 2 O and Bi 5 O 7 I, allowing the efficient utilization of solar energy (from UV to NIR) and high separation efficiency of photogenerated electron-hole pairs. The present work is desirable to explore a possible avenue for the full utilization of solar energy. Copyright © 2017 Elsevier B.V. All rights reserved.

Characterization of an Mg-implanted GaN p-i-n Diode

Science.gov (United States)

2016-03-31

Characterization of an Mg- implanted GaN p-i-n Diode Travis J. Anderson, Jordan D. Greenlee, Boris N. Feigelson, Karl D. Hobart, and Francis J...Kub Naval Research Laboratory, Washington, DC 20375 Abstract: A p-i-n diode formed by the implantation of Mg in GaN was fabricated and...characterized. After implantation , Mg was activated using the symmetrical multicycle rapid thermal annealing technique with heating pulses up to 1340C

Transient p53 suppression increases reprogramming of human fibroblasts without affecting apoptosis and DNA damage

DEFF Research Database (Denmark)

Rasmussen, Mikkel Aabech; Holst, Bjørn; Tümer, Zeynep

2014-01-01

The discovery of human-induced pluripotent stem cells (iPSCs) has sparked great interest in the potential treatment of patients with their own in vitro differentiated cells. Recently, knockout of the Tumor Protein 53 (p53) gene was reported to facilitate reprogramming but unfortunately also led...... to genomic instability. Here, we report that transient suppression of p53 during nonintegrative reprogramming of human fibroblasts leads to a significant increase in expression of pluripotency markers and overall number of iPSC colonies, due to downstream suppression of p21, without affecting apoptosis...... and DNA damage. Stable iPSC lines generated with or without p53 suppression showed comparable expression of pluripotency markers and methylation patterns, displayed normal karyotypes, contained between 0 and 5 genomic copy number variations and produced functional neurons in vitro. In conclusion...

INTEGRAL discovery of a new hard X-ray transient: IGR J17177-3656

DEFF Research Database (Denmark)

Frankowski, A.; Ferrigo, C.; Bozzo, E.

2011-01-01

We report on the discovery of a new transient source, IGR J17177-3656, detected during the INTEGRAL observation performed from 2011-03-15 09:23 to 2011-03-15 22:42 UT. The source was detected by IBIS/ISGRI at a significance level of 13 and 9 standard deviations, in the 20-40 keV and 40-80 ke......:56:42) (J2000) with a 90% confinement radius of 1.5 arcmin, fully consistent with the ISGRI position. The IBIS/ISGRI spectrum (20-150 keV) can be well described by a power-law with photon index 1.8+/-0.3 (chi2/dof=0.5 for 8 dof). The estimated 20-100 keV flux is 3.7e-10 erg/s/cm2. We could not detect any...

Agresja i przemoc w rodzinie a rozwój psychofizyczny i funkcjonowanie społeczne dzieci

Directory of Open Access Journals (Sweden)

Norbert Dera

2013-04-01

Full Text Available Wstęp: Przemoc zdarza się w każdej grupie społecznej i to z porównywalną częstotliwością. Różnice środowi‑ skowe dotyczą jedynie sposobu przejawiania przemocy, a nie jej natężenia. Jest ona procesem, który stale przy‑ biera na sile, natomiast skutki stosowanej przez sprawcę przemocy zależą od wieku i stadium rozwojowego dziecka. Celem pracy było poznanie negatywnych skutków wpływu agresji i przemocy w rodzinie na rozwój psy‑ chofizyczny i funkcjonowanie społeczne dzieci. Materiał i metoda: Badanie przeprowadzono wśród 237 uczniów klas II, w wieku 14 lat, trzech gimnazjów województwa warmińsko-mazurskiego. Do badań użyto opracowanych ankiet dla rodziców, dzieci oraz nauczycieli i pedagogów. Przeprowadzono analizę dokumen‑ tacji z ośrodków zdrowia, pedagogiczno-wychowawczej, psychologicznej z placówek zajmujących się proble‑ mami dzieci (policyjne, ośrodki wychowawcze, poradnie psychologiczne etc.. Wykorzystano również dwa testy psychologiczne. Za metodę analizy statystycznej przyjęto metodę sondażu diagnostycznego. Wyniki: W bada‑ nej populacji u niemal połowy dzieci stwierdzono przejawy przemocy i agresji w rodzinie, przy czym tylko poło‑ wa z tej grupy bezpośrednio wskazała na obecność tych zjawisk. Ofiarami przemocy i agresji w rodzinie dwu‑ krotnie częściej stają się dziewczęta niż chłopcy. Przemoc często współwystępuje z problemem alkoholowym. Zauważono korelacje pomiędzy częstością stosowania przemocy wobec dziecka i współmałżonka. Przemoc powoduje zaburzenie wszystkich aspektów życia dziecka, zwiększając chorobowość i pogarszając funkcjono‑ wanie społeczne. Wykazano często występowanie przemocy w środowisku wiejskim oraz w rodzinach o niskim statusie socjoekonomicznym bądź takich, w których występuje bezrobocie. Wnioski: Wyniki badań wykazały jednoznacznie, że agresja i przemoc w rodzinie wywiera znamienny i negatywny wpływ na

Wetland Responses to Sea Level Rise in the Northern Gulf of Mexico

Science.gov (United States)

Alizad, K.; Bilskie, M. V.; Hagen, S. C.; Medeiros, S. C.; Morris, J. T.

2016-12-01

Coastal regions are vulnerable to flood risk due to climate change, sea level rise, and wetland losses. The Northern Gulf of Mexico (NGOM) is a region in which extreme events are projected to be more intense under climate change and sea level rise scenarios [Wang et al., 2013; Bilskie et al., 2014]. Considering increased frequency and intensity of coastal flooding, wetlands are valuable natural resources that protect shorelines by dissipating waves and storm surges [Costanza et al., 2008]. Therefore, it is critical to investigate the response of salt marsh systems in different estuaries to sea level rise in the NGOM and their effects on storm surges to inform coastal managers to choose effective restoration plans. This research applies the coupled Hydro-MEM model [Alizad et al., 2016] to study three different estuarine systems in the NGOM. The model incorporates both sea level rise rate and feedbacks between physics and biology by coupling a hydrodynamic (ADCIRC) and salt marsh (MEM) model. The results of the model provide tidal hydrodynamics and biomass density change under four sea level rise projections during a 100-year period. The results are used to investigate marsh migration path in the estuarine systems. In addition, this study shows how marsh migration and biomass density change can impact storm surge modeling. The results imply the broader impacts of sea level rise on the estuarine systems in the NGOM. ReferencesAlizad, K., S. C. Hagen, J. T. Morris, P. Bacopoulos, M. V. Bilskie, J. Weishampel, and S. C. Medeiros (2016), A coupled, two-dimensional hydrodynamic-marsh model with biological feedback, Ecological Modeling, 327, 29-43. Bilskie, M. V., S. C. Hagen, S. C. Medeiros, and D. L. Passeri (2014), Dynamics of sea level rise and coastal flooding on a changing landscape, Geophysical Research Letters, 41(3), 927-934. Costanza, R., O. Pérez-Maqueo, M. L. Martinez, P. Sutton, S. J. Anderson, and K. Mulder (2008), The Value of Coastal Wetlands for Hurricane

Kilohertz QPOs, spectral state transitions and the distance to the neutron star X-ray transient IGR J17473-2721

DEFF Research Database (Denmark)

Altamirano, D.; Galloway, D.; Chenevez, Jérôme

2008-01-01

We report on RXTE monitoring observations of the transient X-ray binary IGR J17473-2721 since the beginning of its latest outburst on March 26th, 2008 (see ATEL #1445, #1459, #1460, #1461 and #1468). IGR J17473-2721 reached a maximum unabsorbed flux of ~1.30E-8 ergs cm-2 s-1 (2-10 keV, assuming n...

A Polytime Algorithm Based on a Primal LP Model for the Scheduling Problem 1 vertical bar pmtn;p(j)=2;r(j)vertical bar Sigma w(j)C(j)

NARCIS (Netherlands)

Bouma, Harmen W.; Goldengorin, Boris; Lagakos, S; Perlovsky, L; Jha, M; Covaci, B; Zaharim, A; Mastorakis, N

2009-01-01

In this paper a Boolean Linear Programming (BLP) model is presented for the single machine scheduling problem 1 vertical bar pmtn; p(j) = 2;r(j)vertical bar Sigma w(j)C(j). The problem is a special case of the open problem 1 vertical bar pmtn; p(j) = p; r(j)vertical bar Sigma wj(g)C(j). We show that

REM optical/NIR observations of MAXI J1659-152

NARCIS (Netherlands)

D'Avanzo, P.; Goldoni, P.; Patruno, A.; Casella, P.; Campana, S.; Russell, D.M.; Belloni, T.M.

2010-01-01

We observed the optical and NIR counterpart of the recently discovered X-ray transient MAXI J1659-152 (Negoro et al. 2010, ATel #2873; Mangano et al. 2010, GCN #11296) with the REM telescope located in La Silla (Chile) in imaging mode using the V, R, I, J, H and K filters.

Crystallization-mediated amorphous CuxO (x = 1, 2)/crystalline CuI p-p type heterojunctions with visible light enhanced and ultraviolet light restrained photocatalytic dye degradation performance

Science.gov (United States)

Wang, Hongli; Cai, Yun; Zhou, Jian; Fang, Jun; Yang, Yang

2017-04-01

We report simple and cost-effective fabrication of amorphous CuxO (x = 1, 2)/crystalline CuI p-p type heterojunctions based on crystallization-mediated approaches including antisolvent crystallization and crystal reconstruction. Starting from CuI acetonitrile solution, large crystals in commercial CuI can be easily converted to aggregates consisting of small particles by the crystallization processes while the spontaneous oxidation of CuI by atmospheric/dissolved oxygen can induce the formation of trace CuxO on CuI surface. As a proof of concept, the as-fabricated CuxO/CuI heterojunctions exhibit effective photocatalytic activity towards the degradation of methyl blue and other organic pollutants under visible light irradiation, although the wide band-gap semiconductor CuI is insensible to visible light. Unexpectedly, the CuxO/CuI heterojunctions exhibit restrained photocatalytic activity when ultraviolet light is applied in addition to the visible. It is suggested that the CuxO/CuI interface can enhance the spatial separation of the electron-hole pairs with the excitation of CuxO under visible light and prolong the lifetime of photogenerated charges with high redox ability. The present work represents a critically important step in advancing the crystallization technique for potential mass production of semiconductor heterojunctions in a mild manner.

A theory of post-stall transients in axial compression systems. I - Development of equations

Science.gov (United States)

Moore, F. K.; Greitzer, E. M.

1985-01-01

An approximate theory is presented for post-stall transients in multistage axial compression systems. The theory leads to a set of three simultaneous nonlinear third-order partial differential equations for pressure rise, and average and disturbed values of flow coefficient, as functions of time and angle around the compressor. By a Galerkin procedure, angular dependence is averaged, and the equations become first order in time. These final equations are capable of describing the growth and possible decay of a rotating-stall cell during a compressor mass-flow transient. It is shown how rotating-stall-like and surgelike motions are coupled through these equations, and also how the instantaneous compressor pumping characteristic changes during the transient stall process.

Ayinmode et al., Afr. J. Infect. Dis. (2016) 10 (1): 25 –28 http://dx.doi ...

African Journals Online (AJOL)

Proff.Adewunmi

al., 1997; Frenkel et al., 2003). Outdoor ... report on Toxoplasma gondii in dogs in Nigeria is that by Kamani et al. ..... Kamani, J., Aliyu, U.M., Hussaini, A.K., Goni, I.D., James, P.Y., Dauda, K.P., Henry, E.N., Peter, J. and Godwin, O.E. (2010).

Phase formations in the KOH-BaO2-KI(I2)-Bi2O3 system

International Nuclear Information System (INIS)

Klinkova, L.A.; Barkovskij, N.V.; Nikolajchik, V.I.

2004-01-01

Phase composition of electrochemical synthesis products in the system KOH-BaO 2 -KI(I 2 )-Bi 2 O 3 and its influence on superconducting properties of bismuth-containing oxides are studied by the methods of X-ray phase and elementary analyses, electron diffraction in transmission electron microscope and by measuring temperature dependence of magnetic susceptibility. It was been ascertained that in the presence of iodine introduced as KI or I 2 oxoiodides KBi 6 O 9 I and Bi 5 O 7 I are formed in the system above, giving rise to a change in the composition of synthesis products in KOH-BaO 2 -Bi 2 O 3 matrix system towards formation of superconducting oxides K n Ba m Bi m+n O y rich in bismuth, which are characterized by low values of superconducting transition point [ru

Evaluation of Start Transient Oscillations with the J-2X Engine Gas Generator Assembly

Science.gov (United States)

Hulka, J. R.; Morgan, C. J.; Casiano, M. J.

2015-01-01

During development of the gas generator for the liquid oxygen/liquid hydrogen propellant J-2X rocket engine, distinctive and oftentimes high-amplitude pressure oscillations and hardware vibrations occurred during the start transient of nearly every workhorse gas generator assembly test, as well as during many tests of engine system hardware. These oscillations appeared whether the steady-state conditions exhibited stable behavior or not. They occurred similarly with three different injector types, and with every combustion chamber configuration tested, including chamber lengths ranging over a 5:1 range, several different nozzle types, and with or without a side branch line simulating a turbine spin start gas supply line. Generally, two sets of oscillations occurred, one earlier in the start transient and at higher frequencies, and the other almost immediately following and at lower frequencies. Multiple dynamic pressure measurements in the workhorse combustion chambers indicated that the oscillations were associated with longitudinal acoustic modes of the combustion chambers, with the earlier and higher frequency oscillation usually related to the second longitudinal acoustic mode and the later and lower frequency oscillation usually related to the first longitudinal acoustic mode. Given that several early development gas generator assemblies exhibited unstable behavior at frequencies near the first longitudinal acoustic modes of longer combustion chambers, the start transient oscillations are presumed to provide additional insight into the nature of the combustion instability mechanisms. Aspects of the steadystate oscillations and combustion instabilities from development and engine system test programs have been reported extensively in the three previous JANNAF Liquid Propulsion Subcommittee meetings (see references below). This paper describes the hardware configurations, start transient sequence operations, and transient and dynamic test data during the start

DISCOVERY OF THE TRANSIENT MAGNETAR 3XMM J185246.6+003317 NEAR SUPERNOVA REMNANT KESTEVEN 79 WITH XMM-NEWTON

Energy Technology Data Exchange (ETDEWEB)

Zhou, Ping; Chen, Yang; Li, Xiang-Dong; Sun, Wei [Department of Astronomy, Nanjing University, Nanjing 210093 (China); Safi-Harb, Samar [Department of Physics and Astronomy, University of Manitoba, Winnipeg, MB R3T 2N2 (Canada); Mendez, Mariano [Kapteyn Astronomical Institute, University of Groningen, P.O. Box 800, 9700 AV Groningen (Netherlands); Terada, Yukikatsu [Graduate School of Science and Engineering, Saitama University, 255 Simo-Ohkubo, Sakura-ku, Saitama 338-8570 (Japan); Ge, Ming-Yu [Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

2014-01-20

We report the serendipitous discovery with XMM-Newton that 3XMM J185246.6+003317 is an 11.56 s X-ray pulsar located 1' away from the southern boundary of supernova remnant Kes 79. The spin-down rate of 3XMM J185246.6+003317 is <1.1 × 10{sup –13} s s{sup –1}, which, together with the long period P = 11.5587126(4) s, indicates a dipolar surface magnetic field of <3.6 × 10{sup 13} G, a characteristic age of >1.7 Myr, and a spin-down luminosity of <2.8 × 10{sup 30} erg s{sup –1}. Its X-ray spectrum is best-fitted with a resonant Compton scattering model and also can be adequately described by a blackbody model. The observations covering a seven-month span from 2008 to 2009 show variations in the spectral properties of the source, with the luminosity decreasing from 2.7 × 10{sup 34} erg s{sup –1} to 4.6 × 10{sup 33} erg s{sup –1}, along with a decrease of the blackbody temperature from kT ≈ 0.8 keV to ≈0.6 keV. The X-ray luminosity of the source is higher than its spin-down luminosity, ruling out rotation as a power source. The combined timing and spectral properties, the non-detection of any optical or infrared counterpart, together with the lack of detection of the source in archival X-ray data prior to the 2008 XMM-Newton observation, point to 3XMM J185246.6+003317 being a newly discovered transient low-B magnetar undergoing an outburst decay during the XMM-Newton observations. The non-detection by Chandra in 2001 sets an upper limit of 4 × 10{sup 32} erg s{sup –1} to the quiescent luminosity of 3XMM J185246.6+003317. Its period is the longest among currently known transient magnetars. The foreground absorption toward 3XMM J185246.6+003317 is similar to that of Kes 79, suggesting a similar distance of ∼7.1 kpc.

Chemostratigraphy at DSDP Sites 386 (Bermuda Rise) and 144 (Demerara Rise), Implications for Euxinic Conditions During OAE-2

Science.gov (United States)

Horst, P. A.; Maurrasse, F. J.; Sinninghe-Damsté, J. S.; Sandler, A.

2008-05-01

). Biomarker data indicate that during OAE 2 similar paleoceanographic conditions prevailed at both DSDP Sites, 144 on the Demerara Rise and 386 on the Bermuda Rise. A. Forster, H. Sturt, P.A. Meyers, et al., in preliminary shipboard results from Sites 1257 and 1258, Leg 207, J. Erbacher, D.C. Mosher, M.J. Malone, et al., Proc. ODP, Init.Repts.207,1-22 [Online]: http://wwwodp.tamu.edu/publications/207_IR/VOLUME/ CHAPTERS/IR207_10.PDF. [Cited 2006-02-09] M.M.M. Kuypers, et al., Paleoceanography, 17, 4, 1051-1063 (2002) B.R.T. Simoneit, in Initial Reports of the Deep Sea Drilling Project, Vol. 43, Tucholke, B.E., Vogt, P.R., et al., 1979, Eds, Washington (U.S. Government Printing Office), pp. 643-650 (1979) B.R.T. Simoneit and D.H.Stuermer, in Cretaceous Oceans, S.O. Schlanger and M.B. Cita, Eds, Academic Press, New York, pp. 145-163 (1982)

DISSECTING THE REGION OF 3EG J1837-0423 AND HESS J1841-055 WITH INTEGRAL

International Nuclear Information System (INIS)

Sguera, V.; Masetti, N.; Bassani, L.; Romero, G. E.; Bazzano, A.; Bird, A. J.

2009-01-01

3EG J1837-0423 and HESS J1841-055 are two unidentified and peculiar high-energy sources located in the same region of the sky, separated by ∼1.4 deg. Specifically, 3EG J1837-0423 is a transient MeV object detected by EGRET only once during flaring activity that lasted a few days while HESS J1841-055 is a highly extended TeV source. We attempted to match the high-energy emission from the unidentified sources 3EG J1837-0423 and HESS J1841-055 with X-rays (4-20 keV) and soft γ-rays (20-100 keV) candidate counterparts detected through deep International Gamma-Ray Astrophysics Laboratory observations of the sky region. As a result we propose the Supergiant Fast X-ray Transient (SFXT) AX J1841.0-0536 as a possible candidate counterpart of 3EG J1837-0423, based on spatial proximity and transient behavior. Alternatively, AX J1841.0-0536 could be responsible for at least a fraction of the entire TeV emission from the extended source HESS J1841-055, based on a striking spatial correlation. In either case, the proposed association is also supported from an energetic standpoint by a theoretical scenario where AX J1841.0-0536 is a low magnetized pulsar which, due to accretion of massive clumps from the supergiant companion donor star, undergoes sporadic changes to transient Atoll-states where a magnetic tower can produce transient jets and as a consequence high-energy emission. In either case (by association with 3EG J1837-0423 or alternatively with HESS J1841-055), AX J1841.0-0536 might be the prototype of a new class of Galactic transient MeV/TeV emitters.

Transient expression of P-type ATPases in tobacco epidermal cells

DEFF Research Database (Denmark)

Pedas, Lisbeth Rosager; Palmgren, Michael Broberg; Lopez Marques, Rosa Laura

2016-01-01

Transient expression in tobacco cells is a convenient method for several purposes such as analysis of protein-protein interactions and the subcellular localization of plant proteins. A suspension of Agrobacterium tumefaciens cells carrying the plasmid of interest is injected into the intracellula...... for example protein-protein interaction studies. In this chapter, we describe the procedure to transiently express P-type ATPases in tobacco epidermal cells, with focus on subcellular localization of the protein complexes formed by P4-ATPases and their β-subunits....

X-ray Transients in M31

Science.gov (United States)

Kong, A. K. H.; Garcia, M. R.; Primini, F. A.; Murray, S. S.; McClintock, J. E.

2002-06-01

A bright X-ray transient was detected by Chandra on 2002 June 2 with a series of 5 HRC-I snapshots. The new source CXOU J004154.6+405648 (R.A.=00h41m54s.64, Dec.=+40d56m48s.0, +/- 1", J2000) is discovered at a luminosity (0.3-10 keV) of 1.5 x 1038 erg/s (assuming an absorbed power-law model with photon index = 2 and NH = 1021 cm-2 at a distance of 780 kpc).

Peer-to-peer I/O (P2PIO) protocol specification Version 0.6

Energy Technology Data Exchange (ETDEWEB)

Berket, Karlo; Essiari, Abdelilah; Gunter, Dan; Hoschek, Wolfgang

2004-04-21

Today's distributed systems require simple and powerful resource discovery queries in a dynamic environment consisting of a large number of resources spanning many autonomous administrative domains. The distributed search problem is hard due to the variety of query types, the number of resources and their autonomous, partitioned and dynamic nature. We propose a generalized resource discovery framework that is built around an application level messaging protocol called Peer-to-Peer I/O (P2PIO). P2PIO addresses a number of scalability problems in a general way. It provides flexible and uniform transport-independent resource discovery mechanisms to reduce both the client and network burden in multi-hop P2P systems.

LHCb- Observation of $J/\\psi p$ resonances consitent with pentaquark staes in $\\Lambda^0_b \\to J/\\psi K^-p$ decays

CERN Multimedia

Adeva Andany, Bernardo

2015-01-01

The observation of exotic structures in the $J/\\psi p$ channel, refered to as pentaquark-charmonium states, in the decay $\\Lambda^0_b \\rightarrow J/\\psi K^- p$, are presented. An amplitude analysis is performed on the three-body final state that reproduces the two-body mass and angular distributions. To obtain a satisfactory fit of the structures seen in the $J/\\psi p$ mass spectrum, it is necessary to include two Breit-Wigner amplitudes that each describe a resonant state. The significance of each of these resonances is more than 9 standard deviations. One has a mass of 4380 $\\pm$ 8 $\\pm$ 29 MeV and a width of 205 $\\pm$ 18 $\\pm$ 86 MeV, while the second is narrower, with a mass of 4449.8 $\\pm$ 1.7 $\\pm$ 2.5 MeV and a width of 39 $\\pm$ 5 $\\pm$ 19. The preferred $J^P$ assignments are of opposite parity, with one state having spin 3/2 and the other 5/2.

The Chandra Dust-scattering Halo of Galactic Center Transient Swift J174540.7–290015

Energy Technology Data Exchange (ETDEWEB)

Corrales, L. R. [Einstein Fellow, University of Wisconsin-Madison, 475 North Charter Street, Madison, WI, 53706 (United States); Mon, B.; Haggard, D. [McGill Space Institute, McGill University, 3550 University Street, Montreal, QC, H3A 2A7 (Canada); Baganoff, F. K. [MIT Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, Cambridge, MA, 02139 (United States); Garmire, G. [Huntingdon Institute for X-ray Astronomy, 10677 Franks Road Huntingdon, PA, 16652 (United States); Degenaar, N. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 OHA (United Kingdom); Reynolds, M. [University of Michigan, 1085 S. University, 311 West Hall, Ann Arbor, MI 48109 (United States)

2017-04-20

We report the detection of a dust-scattering halo around a recently discovered X-ray transient, Swift J174540.7–290015, which in early 2016 February underwent one of the brightest outbursts ( F {sub X} ≈ 5 × 10{sup −10} erg cm{sup −2} s{sup −1}) observed from a compact object in the Galactic Center field. We analyze four Chandra images that were taken as follow-up observations to Swift discoveries of new Galactic Center transients. After adjusting our spectral extraction for the effects of detector pile-up, we construct a point-spread function for each observation and compare it to the GC field before the outburst. We find residual surface brightness around Swift J174540.7–290015, which has a shape and temporal evolution consistent with the behavior expected from X-rays scattered by foreground dust. We examine the spectral properties of the source, which shows evidence that the object transitioned from a soft to hard spectral state as it faded below L {sub X} ∼ 10{sup 36} erg s{sup −1}. This behavior is consistent with the hypothesis that the object is a low-mass X-ray binary in the Galactic Center.

Transition state region in the A-Band photodissociation of allyl iodide—A femtosecond extreme ultraviolet transient absorption study

Energy Technology Data Exchange (ETDEWEB)

Bhattacherjee, Aditi, E-mail: abhattacherjee@berkeley.edu, E-mail: andrewattar@berkeley.edu; Attar, Andrew R., E-mail: abhattacherjee@berkeley.edu, E-mail: andrewattar@berkeley.edu [Department of Chemistry, University of California, Berkeley, California 94720 (United States); Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Leone, Stephen R., E-mail: srl@berkeley.edu [Department of Chemistry, University of California, Berkeley, California 94720 (United States); Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Department of Physics, University of California, Berkeley, California 94720 (United States)

2016-03-28

Femtosecond extreme ultraviolet (XUV) transient absorption spectroscopy based on a high-harmonic generation source is used to study the 266 nm induced A-band photodissociation dynamics of allyl iodide (CH{sub 2} =CHCH{sub 2}I). The photolysis of the C—I bond at this wavelength produces iodine atoms both in the ground ({sup 2}P{sub 3/2}, I) and spin-orbit excited ({sup 2}P{sub 1/2}, I*) states, with the latter as the predominant channel. Using XUV absorption at the iodine N{sub 4/5} edge (45–60 eV), the experiments constitute a direct probe of not only the long-lived atomic iodine reaction products but also the fleeting transition state region of the repulsive n{sub I}σ{sup ∗}{sub C—I} excited states. Specifically, three distinct features are identified in the XUV transient absorption spectrum at 45.3 eV, 47.4 eV, and 48.4 eV (denoted transients A, B, and C, respectively), which arise from the repulsive valence-excited nσ{sup ∗} states and project onto the high-lying core-excited states of the dissociating molecule via excitation of 4d(I) core electrons. Transients A and B originate from 4d(I) → n(I) core-to-valence transitions, whereas transient C is best assigned to a 4d(I) →σ{sup ∗}(C—I) transition. The measured differential absorbance of these new features along with the I/I* branching ratios known from the literature is used to suggest a more definitive assignment, albeit provisional, of the transients to specific dissociative states within the A-band manifold. The transients are found to peak around 55 fs–65 fs and decay completely by 145 fs–185 fs, demonstrating the ability of XUV spectroscopy to map the evolution of reactants into products in real time. The similarity in the energies of transients A and B with analogous features observed in methyl iodide [Attar et al. J. Phys. Chem. Lett. 6, 5072, (2015)] together with the new observation of transient C in the present work provides a more complete picture of the valence electronic

Phase I Inspection Report. National Dam Safety Program, Boonton Dam and Parsippany Dike, Morris County, New Jersey.

Science.gov (United States)

1978-05-01

13 to >, ft 8« 0*0 o SH s flj r u J5H to TJ 50 CD <u g 4-J 4-> S cd cö § 3> _ *-s Pu CO 0) o ill X! £4 co •34* 2 ff-o . I <U I 4...er t kJ A *- «sj »n jeM«r IS- z p* ** tC f- c^ — •; n — c — O «4 o o tD • • »* **. «« w4 II « ?iTc ^ •* «o rw 4T o*> rv, P* or or...A OX M K> if- CT- tD w m t* ft* O O • r"> X o .r*» I IT -* CT» K- *? Of • «O • » — ro -4 O O» • N X MK fM

VizieR Online Data Catalog: Palomar Transient Factory SNe IIn photometry (Ofek+, 2014)

Science.gov (United States)

Ofek, E. O.; Arcavi, I.; Tal, D.; Sullivan, M.; Gal-Yam, A.; Kulkarni, S. R.; Nugent, P. E.; Ben-Ami, S.; Bersier, D.; Cao, Y.; Cenko, S. B.; De Cia, A.; Filippenko, A. V.; Fransson, C.; Kasliwal, M. M.; Laher, R.; Surace, J.; Quimby, R.; Yaron, O.

2017-07-01

The Palomar Transient Factory (PTF; Law et al. 2009PASP..121.1395L; Rau et al. 2009PASP..121.1334R) and its extension the intermediate PTF (iPTF) found over 2200 spectroscopically confirmed SNe. We selected 19 SNe IIn for which PTF/iPTF has good coverage of the light-curve rise and peak; they are listed in Table 1. Optical spectra were obtained with a variety of telescopes and instruments, including the Double Spectrograph (Oke & Gunn 1982PASP...94..586O) at the Palomar 5 m Hale telescope, the Kast spectrograph (Miller & Stone 1993, Lick Observatory Technical Report 66 (Santa Cruz, CA: Lick Observatory)) at the Lick 3 m Shane telescope, the Low Resolution Imaging Spectrometer (Oke et al. 1995PASP..107..375O) on the Keck-1 10 m telescope, and the Deep Extragalactic Imaging Multi-Object Spectrograph (Faber et al. 2003SPIE.4841.1657F) on the Keck-2 10 m telescope. (2 data files).

A two-dimensional silver(I) coordination polymer constructed from 4-aminophenylarsonate and triphenylphosphane: poly[[(μ₃-4-aminophenylarsonato-κ³N:O:O)(triphenylphosphane-κP)silver(I)] monohydrate].

Science.gov (United States)

Xiao, Zu-Ping; Wen, Meng; Wang, Chun-Ya; Huang, Xi-He

2015-04-01

The title compound, {[Ag(C6H7AsNO3)(C18H15P)]·H2O}n, has been synthesized from the reaction of 4-aminophenylarsonic acid with silver nitrate, in aqueous ammonia, with the addition of triphenylphosphane (PPh3). The Ag(I) centre is four-coordinated by one amino N atom, one PPh3 P atom and two arsonate O atoms, forming a severely distorted [AgNPO2] tetrahedron. Two Ag(I)-centred tetrahedra are held together to produce a dinuclear [Ag2O2N2P2] unit by sharing an O-O edge. 4-Aminophenylarsonate (Hapa(-)) adopts a μ3-κ(3)N:O:O-tridentate coordination mode connecting two dinuclear units, resulting in a neutral [Ag(Hapa)(PPh3)]n layer lying parallel to the (101̄) plane. The PPh3 ligands are suspended on both sides of the [Ag(Hapa)(PPh3)]n layer, displaying up and down orientations. There is an R2(2)(8) hydrogen-bonded dimer involving two arsonate groups from two Hapa(-) ligands related by a centre of inversion. Additionally, there are hydrogen-bonding interactions involving the solvent water molecules and the arsonate and amine groups of the Hapa(-) ligands, and weak π-π stacking interactions within the [Ag(Hapa)(PPh3)]n layer. These two-dimensional layers are further assembled by weak van der Waals interactions to form the final architecture.

Evidence for quiescent synchrotron emission in the black hole X-ray transient Swift J1357.2–0933

Directory of Open Access Journals (Sweden)

Shahbaz T.

2013-12-01

Full Text Available We present high time-resolution optical and infrared observations of the edge-on black hole X-ray transient Swift J1357.2-0933. Our data taken in 2012 shows the system to be at its pre-outburst magnitude and so the system is in quiescence. In contrast to other X-ray transients, the quiescent light curves of Swift J1357.2-0933 do not show the secondary star’s ellipsoidal modulation. The optical and infrared light curves is dominated by variability with an optical fractional rms of about 20 per cent, much larger than what is observed in other systems. The quiescent ultraviolet to mid-IR spectral energy distribution in quiescence is dominated by a nonthermal component with a power–law index of −1.4, (the broad-band rms SED has a similar index which arises from optically thin synchrotron emission from a jet; the lack of a peak in the spectral energy distribution rules out advection-dominated models (based on [19].

Allelopathic inhibition of photosynthesis in the red tide-causing marine alga, Scrippsiella trochoidea (Pyrrophyta), by the dried macroalga, Gracilaria lemaneiformis (Rhodophyta)

Science.gov (United States)

Ye, Changpeng; Liao, Heping; Yang, Yufeng

2014-07-01

The red tide-causing microalga, Scrippsiella trochoidea was co-cultured with different quantities of dried macroalga Gracilaria lemaneiformis under laboratory conditions, to characterize the allelopathic inhibition effect of the seaweed on photosynthesis of the microalga. Photosynthetic oxygen evolution was measured, and chlorophyll a (Chl a) fluorescence transient O-J-I-P (O, J, I and P point in primary photochemistry reaction curve in photosystem II) curves associated with its specific parameters were determined. A concentration-dependent inhibition of S. trochoidea was observed when the dried seaweed was added. The rate of light-saturated maximum photosynthetic oxygen evolution (Pmax) was markedly decreased, and the O-J-I-P curve coupled with its specific parameters was reduced. The inhibitory effects of the macroalga on the microalga, according to the JIP-test (the relative fluorescence analysis based on O-J-I-P curve) and the activity of oxygen evolution, include a decrease in the number of active reaction centers, the blocking-up of the electron transport chain, and the damage to the oxygen-evolving complex. This study suggests that dried G. lemaneiformis is effective in inhibiting photosynthesis of S. trochoidea, and could thus be a potential candidate for mitigating S. trochoidea blooms.

The Splitting of Double-component Active Asteroid P/2016 J1 (PANSTARRS)

Energy Technology Data Exchange (ETDEWEB)

Moreno, F.; Pozuelos, F. J. [Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, E-18008 Granada (Spain); Novaković, B. [Department of Astronomy, Faculty of Mathematics, University of Belgrade, Studentski trg 16, 11000 Belgrade (Serbia); Licandro, J.; Cabrera-Lavers, A. [Instituto de Astrofísica de Canarias, c/Vía Láctea s/n, E-38200 La Laguna, Tenerife (Spain); Bolin, Bryce [Laboratoire Lagrange, Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Blvd. de l’Observatoire, CS 34229, F-06304 Nice cedex 4 (France); Jedicke, Robert [University of Hawaii, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Gladman, Brett J. [Department of Physics and Astronomy, University of British Columbia, Vancouver, BC (Canada); Bannister, Michele T. [Astrophysics Research Centre, Queens University Belfast, Belfast BT7 1NN (United Kingdom); Gwyn, Stephen D. J. [NRC-Herzberg Astronomy and Astrophysics, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7 (Canada); Vereš, Peter [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States); Chambers, Kenneth; Chastel, Serge; Denneau, Larry; Flewelling, Heather; Huber, Mark; Schunová-Lilly, Eva; Magnier, Eugene; Wainscoat, Richard; Waters, Christopher, E-mail: fernando@iaa.es [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); and others

2017-03-01

We present deep imaging observations, orbital dynamics, and dust-tail model analyses of the double-component asteroid P/2016 J1 (J1-A and J1-B). The observations were acquired at the Gran Telescopio Canarias (GTC) and the Canada–France–Hawaii Telescope (CFHT) from mid-March to late July of 2016. A statistical analysis of backward-in-time integrations of the orbits of a large sample of clone objects of P/2016 J1-A and J1-B shows that the minimum separation between them occurred most likely ∼2300 days prior to the current perihelion passage, i.e., during the previous orbit near perihelion. This closest approach was probably linked to a fragmentation event of their parent body. Monte Carlo dust-tail models show that those two components became active simultaneously ∼250 days before the current perihelion, with comparable maximum loss rates of ∼0.7 and ∼0.5 kg s{sup −1}, and total ejected masses of 8 × 10{sup 6} and 6 × 10{sup 6} kg for fragments J1-A and J1-B, respectively. Consequently, the fragmentation event and the present dust activity are unrelated. The simultaneous activation times of the two components and the fact that the activity lasted 6–9 months or longer, strongly indicate ice sublimation as the most likely mechanism involved in the dust emission process.

Observation of $J/\\psi p$ resonances consistent with pentaquark states in ${\\Lambda_b^0\\to J/\\psi K^-p}$ decays

CERN Document Server

Aaij, Roel; Adinolfi, Marco; Affolder, Anthony; Ajaltouni, Ziad; Akar, Simon; Albrecht, Johannes; Alessio, Federico; Alexander, Michael; Ali, Suvayu; Alkhazov, Georgy; Alvarez Cartelle, Paula; Alves Jr, Antonio Augusto; Amato, Sandra; Amerio, Silvia; Amhis, Yasmine; An, Liupan; Anderlini, Lucio; Anderson, Jonathan; Andreassi, Guido; Andreotti, Mirco; Andrews, Jason; Appleby, Robert; Aquines Gutierrez, Osvaldo; Archilli, Flavio; d'Argent, Philippe; Artamonov, Alexander; Artuso, Marina; Aslanides, Elie; Auriemma, Giulio; Baalouch, Marouen; Bachmann, Sebastian; Back, John; Badalov, Alexey; Baesso, Clarissa; Baldini, Wander; Barlow, Roger; Barschel, Colin; Barsuk, Sergey; Barter, William; Batozskaya, Varvara; Battista, Vincenzo; Bay, Aurelio; Beaucourt, Leo; Beddow, John; Bedeschi, Franco; Bediaga, Ignacio; Bel, Lennaert; Bellee, Violaine; Belloli, Nicoletta; Belyaev, Ivan; Ben-Haim, Eli; Bencivenni, Giovanni; Benson, Sean; Benton, Jack; Berezhnoy, Alexander; Bernet, Roland; Bertolin, Alessandro; Bettler, Marc-Olivier; van Beuzekom, Martinus; Bien, Alexander; Bifani, Simone; Billoir, Pierre; Bird, Thomas; Birnkraut, Alex; Bizzeti, Andrea; Blake, Thomas; Blanc, Frédéric; Blouw, Johan; Blusk, Steven; Bocci, Valerio; Bondar, Alexander; Bondar, Nikolay; Bonivento, Walter; Borghi, Silvia; Borsato, Martino; Bowcock, Themistocles; Bowen, Espen Eie; Bozzi, Concezio; Braun, Svende; Britsch, Markward; Britton, Thomas; Brodzicka, Jolanta; Brook, Nicholas; Bursche, Albert; Buytaert, Jan; Cadeddu, Sandro; Calabrese, Roberto; Calvi, Marta; Calvo Gomez, Miriam; Campana, Pierluigi; Campora Perez, Daniel; Capriotti, Lorenzo; Carbone, Angelo; Carboni, Giovanni; Cardinale, Roberta; Cardini, Alessandro; Carniti, Paolo; Carson, Laurence; Carvalho Akiba, Kazuyoshi; Casse, Gianluigi; Cassina, Lorenzo; Castillo Garcia, Lucia; Cattaneo, Marco; Cauet, Christophe; Cavallero, Giovanni; Cenci, Riccardo; Charles, Matthew; Charpentier, Philippe; Chefdeville, Maximilien; Chen, Shanzhen; Cheung, Shu-Faye; Chiapolini, Nicola; Chrzaszcz, Marcin; Cid Vidal, Xabier; Ciezarek, Gregory; Clarke, Peter; Clemencic, Marco; Cliff, Harry; Closier, Joel; Coco, Victor; Cogan, Julien; Cogneras, Eric; Cogoni, Violetta; Cojocariu, Lucian; Collazuol, Gianmaria; Collins, Paula; Comerma-Montells, Albert; Contu, Andrea; Cook, Andrew; Coombes, Matthew; Coquereau, Samuel; Corti, Gloria; Corvo, Marco; Couturier, Benjamin; Cowan, Greig; Craik, Daniel Charles; Crocombe, Andrew; Cruz Torres, Melissa Maria; Cunliffe, Samuel; Currie, Robert; D'Ambrosio, Carmelo; Dall'Occo, Elena; Dalseno, Jeremy; David, Pieter; Davis, Adam; De Bruyn, Kristof; De Capua, Stefano; De Cian, Michel; De Miranda, Jussara; De Paula, Leandro; De Simone, Patrizia; Dean, Cameron Thomas; Decamp, Daniel; Deckenhoff, Mirko; Del Buono, Luigi; Déléage, Nicolas; Demmer, Moritz; Derkach, Denis; Deschamps, Olivier; Dettori, Francesco; Dey, Biplab; Di Canto, Angelo; Di Ruscio, Francesco; Dijkstra, Hans; Donleavy, Stephanie; Dordei, Francesca; Dorigo, Mirco; Dosil Suárez, Alvaro; Dossett, David; Dovbnya, Anatoliy; Dreimanis, Karlis; Dufour, Laurent; Dujany, Giulio; Dupertuis, Frederic; Durante, Paolo; Dzhelyadin, Rustem; Dziurda, Agnieszka; Dzyuba, Alexey; Easo, Sajan; Egede, Ulrik; Egorychev, Victor; Eidelman, Semen; Eisenhardt, Stephan; Eitschberger, Ulrich; Ekelhof, Robert; Eklund, Lars; El Rifai, Ibrahim; Elsasser, Christian; Ely, Scott; Esen, Sevda; Evans, Hannah Mary; Evans, Timothy; Falabella, Antonio; Färber, Christian; Farley, Nathanael; Farry, Stephen; Fay, Robert; Ferguson, Dianne; Fernandez Albor, Victor; Ferrari, Fabio; Ferreira Rodrigues, Fernando; Ferro-Luzzi, Massimiliano; Filippov, Sergey; Fiore, Marco; Fiorini, Massimiliano; Firlej, Miroslaw; Fitzpatrick, Conor; Fiutowski, Tomasz; Fohl, Klaus; Fol, Philip; Fontana, Marianna; Fontanelli, Flavio; Forty, Roger; Francisco, Oscar; Frank, Markus; Frei, Christoph; Frosini, Maddalena; Fu, Jinlin; Furfaro, Emiliano; Gallas Torreira, Abraham; Galli, Domenico; Gallorini, Stefano; Gambetta, Silvia; Gandelman, Miriam; 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2015-08-12

Observations of exotic structures in the $J/\\psi p$ channel, that we refer to as pentaquark-charmonium states, in $\\Lambda_b^0\\to J/\\psi K^- p$ decays are presented. The data sample corresponds to an integrated luminosity of 3/fb acquired with the LHCb detector from 7 and 8 TeV pp collisions. An amplitude analysis is performed on the three-body final-state that reproduces the two-body mass and angular distributions. To obtain a satisfactory fit of the structures seen in the $J/\\psi p$ mass spectrum, it is necessary to include two Breit-Wigner amplitudes that each describe a resonant state. The significance of each of these resonances is more than 9 standard deviations. One has a mass of $4380\\pm 8\\pm 29$ MeV and a width of $205\\pm 18\\pm 86$ MeV, while the second is narrower, with a mass of $4449.8\\pm 1.7\\pm 2.5$ MeV and a width of $39\\pm 5\\pm 19$ MeV. The preferred $J^P$ assignments are of opposite parity, with one state having spin 3/2 and the other 5/2.

Observation of J/ψp Resonances Consistent with Pentaquark States in Λ_{b}^{0}→J/ψK^{-}p Decays.

Science.gov (United States)

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Teubert, F; Thomas, C; Thomas, E; van Tilburg, J; Tisserand, V; Tobin, M; Todd, J; Tolk, S; Tomassetti, L; Tonelli, D; Topp-Joergensen, S; Torr, N; Tournefier, E; Tourneur, S; Trabelsi, K; Tran, M T; Tresch, M; Trisovic, A; Tsaregorodtsev, A; Tsopelas, P; Tuning, N; Ukleja, A; Ustyuzhanin, A; Uwer, U; Vacca, C; Vagnoni, V; Valenti, G; Vallier, A; Vazquez Gomez, R; Vazquez Regueiro, P; Vázquez Sierra, C; Vecchi, S; Velthuis, J J; Veltri, M; Veneziano, G; Vesterinen, M; Viaud, B; Vieira, D; Vieites Diaz, M; Vilasis-Cardona, X; Vollhardt, A; Volyanskyy, D; Voong, D; Vorobyev, A; Vorobyev, V; Voß, C; de Vries, J A; Waldi, R; Wallace, C; Wallace, R; Walsh, J; Wandernoth, S; Wang, J; Ward, D R; Watson, N K; Websdale, D; Weiden, A; Whitehead, M; Wilkinson, G; Wilkinson, M; Williams, M; Williams, M P; Williams, M; Williams, T; Wilson, F F; Wimberley, J; Wishahi, J; Wislicki, W; Witek, M; Wormser, G; Wotton, S A; Wright, S; Wyllie, K; Xie, Y; Xu, Z; Yang, Z; Yu, J; Yuan, X; Yushchenko, O; Zangoli, M; Zavertyaev, M; Zhang, L; Zhang, Y; Zhelezov, A; Zhokhov, A; Zhong, L; Zucchelli, S

2015-08-14

Observations of exotic structures in the J/ψp channel, which we refer to as charmonium-pentaquark states, in Λ_{b}^{0}→J/ψK^{-}p decays are presented. The data sample corresponds to an integrated luminosity of 3 fb^{-1} acquired with the LHCb detector from 7 and 8 TeV pp collisions. An amplitude analysis of the three-body final state reproduces the two-body mass and angular distributions. To obtain a satisfactory fit of the structures seen in the J/ψp mass spectrum, it is necessary to include two Breit-Wigner amplitudes that each describe a resonant state. The significance of each of these resonances is more than 9 standard deviations. One has a mass of 4380±8±29 MeV and a width of 205±18±86 MeV, while the second is narrower, with a mass of 4449.8±1.7±2.5 MeV and a width of 39±5±19 MeV. The preferred J^{P} assignments are of opposite parity, with one state having spin 3/2 and the other 5/2.

Recordando o Abade de L´Épée

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Maria Auxiliadora Buscacio Fernandes

2017-02-01

Full Text Available No ano em que o INES comemora seus 155 anos de existência, celebra também o aniversário de 300 anos de nascimento do amigo dos surdos, o abade de L'Épée. Foi no dia 25 de novembro de 1712, que nasceu, em Versailles, aquele que se tornaria uma das figuras mais importantes na história da educação dos surdos. Nossa coleção de obras raras do Acervo do INES, oferece preciosas informações sobre a vida e obra do abade de L'Épée, que já se encontram traduzidas e disponíveis ao público e pesquisadores.

Split Active Asteroid P/2016 J1 (PANSTARRS)

Science.gov (United States)

Hui, Man-To; Jewitt, David; Du, Xinnan

2017-10-01

We present a photometric and astrometric study of the split active asteroid P/2016 J1 (PANSTARRS). Separation occurred either in 2012 May to June, or 2010 April, with a separation speed Vsep = 0.70 ± 0.02 m s-1 for the former scenario and 0.83 ± 0.06 m s-1 for the latter. The two fragments (hereafter J1-A and J1-B) have similar, Sun-like colors that are comparable to the colors of primitive C- and G-type asteroids. With a nominal comet-like albedo, pR = 0.04, the effective, dust-contaminated cross sections are estimated to be 2.4 km2 (J1-A) and 0.5 km2 (J1-B). We estimate that the nucleus radii lie in the range 140 times of 2016 J1 are both short compared to the age of the solar system, raising the question of why this object still exists. We suggest that formerly buried ice became exposed at the surface, perhaps via a minor impact, and that sublimation torques then rapidly drove the body to breakup. Further disintegration events are anticipated owing to the rotational instability. Reference: Hui, M.-T., Jewitt, D. and Du, X., 2017. AJ, 153(4), p.141.

High-<i>J> CO survey of low-mass protostars observed with <i>Herschel>-HIFI

DEFF Research Database (Denmark)

Yıldız, U. A.; Kristensen, L. E.; van Dishoeck, E. F.

2013-01-01

with Herschel (WISH) key program. This is the first large spectrally resolved high-J CO survey conducted for these types of sources. Complementary lower J CO maps were observed using ground-based telescopes, such as the JCMT and APEX and convolved to matching beam sizes. Results: The 12CO 10-9 line is detected...... the 13CO and 12CO excitation temperatures, due to lack of UV heating and outflow components in those models. The H2O 110 - 101/CO 10-9 intensity ratio does not change significantly with velocity, in contrast to the H2O/CO 3-2 ratio, indicating that CO 10-9 is the lowest transition for which the line...

Measurement of the mass splittings between the b{bar b}{chi}{sub b,J}(1P) states

Energy Technology Data Exchange (ETDEWEB)

Edwards, K.W.; Edwards, K.W. [Institute of Particle Physics (Canada); Bellerive, A.; Bellerive, A.; Janicek, R.; Janicek, R.; MacFarlane, D.B.; MacFarlane, D.B.; Patel, P.M.; Patel, P.M. [Institute of Particle Physics (Canada); Sadoff, A.J. [Ithaca College, Ithaca, New York,14850 (United States); Ammar, R.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Darling, C.; Davis, R.; Kotov, S.; Kravchenko, I.; Kwak, N.; Zhou, L. [University of Kansas, Lawrence, Kansas, 66045 (United States); Anderson, S.; Kubota, Y.; Lee, S.J.; ONeill, J.J.; Poling, R.; Riehle, T.; Smith, A. [University of Minnesota, Minneapolis, Minnesota, 55455 (United States); Alam, M.S.; Athar, S.B.; Ling, Z.; Mahmood, A.H.; Timm, S.; Wappler, F. [State University of New York at Albany, Albany, New York, 12222 (United States); Anastassov, A.; Duboscq, J.E.; Fujino, D.; Gan, K.K.; Hart, T.; Honscheid, K.; Kagan, H.; Kass, R.; Lee, J.; Schwarthoff, H.; Spencer, M.B.; Sung, M.; Undrus, A.; Wolf, A.; Zoeller, M.M. [Ohio State University, Columbus, Ohio, 43210 (United States); Richichi, S.J.; Severini, H.; Skubic, P. [University of Oklahoma, Norman, Oklahoma, 73019 (United States); Bishai, M.; Fast, J.; Hinson, J.W.; Menon, N.; Miller, D.H.; Shibata, E.I.; Shipsey, I.P.; Yurko, M. [Purdue University, West Lafayette, Indiana, 47907 (United States); Glenn, S.; Kwon, Y.; Lyon, A.L.; Roberts, S.; Thorndike, E.H. [University of Rochester, Rochester, New York, 14627 (United States); Jessop, C.P.; Lingel, K.; Marsiske, H.; Perl, M.L.; Savinov, V.; Ugolini, D.; Zhou, X. [Stanford Linear Accelerator Center, Stanford University, Stanford, California, 94309 (United States); Coan, T.E.; Fadeyev, V.; Korolkov, I.; Maravin, Y.; Narsky, I.; Shelkov, V.; Staeck, J.; Stroynowski, R.; Volobouev, I.; Ye, J. [Southern Methodist University, Dallas, Texas, 75275 (United States); Artuso, M.; Azfar, F.; Efimov, A.; Goldberg, M.; He, D.; Kopp, S.; Moneti, G.C.; Mountain, R.; Schuh, S.; Skwarnicki, T.; and others

1999-02-01

We present new measurements of photon energies and branching fractions for the radiative transitions {Upsilon}(2S){r_arrow}{gamma}{chi}{sub b(J=0,1,2)}(1P). The masses of the {chi}{sub b} states are determined from the measured radiative photon energies. The ratio of mass splittings between the {chi}{sub b} substates, r{equivalent_to}(M{sub J=2}{minus}M{sub J=1})/(M{sub J=1}{minus}M{sub J=0}), with M the {chi}{sub b} mass, provides information on the nature of the b{bar b} confining potential. We find r(1P)=0.542{plus_minus}0.022{plus_minus}0.024. This value is somewhat lower than the previous world average, but more consistent with the theoretical expectation that r(1P){lt}r(2P); i.e., that this mass splitting ratio is smaller for the {chi}{sub b}(1P) states than for the {chi}{sub b}(2P) states. {copyright} {ital 1999} {ital The American Physical Society}

Specyficzne warianty języków narodowych: polski północnokresowy i niemiecki nadwołżański. Perspektywy badań porównawczych

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Jolanta Mędelska

2015-12-01

. In the Soviet period, a peculiar cultural dialect developed, based on the dialects of Volga German. The author discusses the points of contact and divergence in the history of Volga German and Polish Northern Kresy dialect, indicating possible directions for comparative research.   Specyficzne warianty języków narodowych: polski północnokresowy i niemiecki nadwołżański. Perspektywy badań porównawczych Autorka zajmuje się szczególnymi kodami językowymi: polszczyzną północnokresową i niemczyzną nadwołżańską. Są to odmiany języków narodowych, które rozwijały się w niezwykłych warunkach. Oba znajdowały się poza terytorium etnicznym i występowały głównie w postaci rozległych wysp językowych. Polszczyzna północnokresowa ukształtowała się na ziemiach dzisiejszej Litwy, Białorusi, Łotwy w dwóch odmianach. Polacy dobrowolnie przenoszący się do miast i miasteczek Wielkiego Księstwa Litewskiego przenieśli na te tereny język polski, który z czasem przejmowały miejscowe warstwy wyższe, polonizując się i wytwarzając specyficzny miejscowy dialekt kulturalny. W II połowie XIX w. dialekt ten zaczęli przejmować chłopi litewscy i białoruscy. W ten sposób powstały zwarte obszary języka polskiego za północno-wschodnią granicą etniczną, czyli gwary północnokresowe. Obie odmiany polszczyzny rozwijały się w Imperium Rosyjskim, gdzie poddawane były rusyfikacji. Ponownie trafiły w orbitę silnego oddziaływania języka rosyjskiego po II wojnie światowej. W Litewskiej Socjalistycznej Republice Radzieckiej na ich podstawie ukształtował się nowy północnokresowy dialekt kulturalny. Dialekty niemieckie Powołża należą do gwar przeniesionych, trafiły nad Wołgę w XVIII w. wraz z przybyszami z różnych stron Niemiec, na nowym miejscu uległy modyfikacji, polegającej głównie na wymieszaniu poszczególnych gwar. Długo rozwijały się w izolacji zarówno od rosyjskiego otoczenia, jak i od innych odmian j

40 CFR 1039.510 - Which duty cycles do I use for transient testing?

Science.gov (United States)

2010-07-01

... 40 Protection of Environment 32 2010-07-01 2010-07-01 false Which duty cycles do I use for... ENGINES Test Procedures § 1039.510 Which duty cycles do I use for transient testing? (a) Measure emissions by testing the engine on a dynamometer with one of the following transient duty cycles to determine...

Lead apatites: structural variations among Pb₅(<i>BO₄)₃ Cl with <i>B> = P (pyromorphite), As (mimetite) and V (vanadinite)

Energy Technology Data Exchange (ETDEWEB)

Antao, Sytle M.; Dhaliwal, Inayat

2018-01-01

<p>The crystal structure of four Pb apatite samples, Pb₅(BO₄)₃Cl, was refined with synchrotron high-resolution powder X-ray diffraction data, Rietveld refinements, space groupP6₃/mandZ= 2. For this isotypic series,B= P⁵⁺ is pyromorphite,B= As⁵⁺is mimetite andB= V⁵⁺is vanadinite. The ionic radius for As⁵⁺(0.355 Å) is similar to that of V⁵⁺(0.335 Å), and this is twice as large as that for P⁵⁺(0.170 Å). However, thecunit-cell parameter for mimetite is surprisingly different from that of vanadinite, although their unit-cell volumes,V, are almost equal to each other. No explanation was available for this peculiarc-axis value for mimetite. Structural parameters such as average $\\langle$B—O$\\rangle$ [4], $\\langle$Pb1—O₉$\\rangle$ [9] and $\\langle$Pb2—O₆Cl₂$\\rangle$ [8] distances increase linearly withV (the coordination numbers for the cations are given in square brackets). Mimetite has a short Pb2—O1 distance, so the O1 oxygen atom interacts with the 6s²lone-pair electrons of the Pb²⁺ cation that causes the Cl—Cl distance (=c/2) to increase to the largest value in the series because of repulsion, which causes thec-axis to increase anomalously. Although Pb apatite minerals occur naturally in ore deposits, they are also formed as scaly deposits in lead water pipes that give rise to lead in tap water, as was found recently in Flint, Michigan, USA. It is important to identify Pb-containing phases in water-pipe deposits.p>

The orbital period in the supergiant fast X-ray transient IGR J16465--4507

OpenAIRE

Clark, D. J.; Sguera, V.; Bird, A. J; McBride, V. A.; Hill, A. B.; Scaringi, S.; Drave, S.; Bazzano, A.; Dean, A. J

2010-01-01

Timing analysis of the INTEGRAL-IBIS and Swift-BAT light curves of the Supergiant Fast X-ray Transient (SFXT) IGR J16465-4507 has identified a period of 30.32+/-0.02 days which we interpret as the orbital period of the binary system. In addition 11 outbursts (9 of which are previously unpublished) have been found between MJD 52652 to MJD 54764, all of which occur close to the region of the orbit we regard as periastron. From the reported flux outbursts, we found a dynamical range in the inter...

Processamento de telhas cerâmicas por compactação de pós e queima em forno a rolo

OpenAIRE

Neckel Junior, Lourenço

2008-01-01

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnologico. Programa de Pós-Graduação em Ciência e Engenharia de Materiais O presente trabalho apresenta o desenvolvimento do processamento de telhas cerâmicas por compactação de pós e queima em forno a rolos. O trabalho está dividido em etapas: o estudo laboratorial de duas argilas - já previamente utilizadas em indústrias cerâmicas - buscando selecionar a argila e as condições otimizadas de processamento, onde foi i...

Cardioversão elétrica e lesão miocárdica: avaliação pelos novos marcadores de injúria cardíaca Electrical cardioversion and myocardial injury: evaluation by new cardiac injury markers

Directory of Open Access Journals (Sweden)

Elizabete Silva dos Santos

2006-03-01

Full Text Available OBJETIVO: Avaliar, através da evolução dos novos marcadores bioquímicos de injúria cardíaca, se a cardioversão elétrica (CVE causa lesão miocárdica. MÉTODOS: Foram avaliados 76 pacientes (P submetidos a CVE eletiva de fibrilação atrial ou flutter atrial. Medidas de creatinafosfoquinase (CPK, CKMB-atividade e dosagem de CKMB-massa (M, mioglobina e troponina I cardíaca (cTnI foram determinadas antes e após 6 e 24 horas da CVE. RESULTADOS: A CVE resultou um sucesso em 58 P (76,3%. A carga cumulativa (CC foi de até 350 joules (J em 36 P, de 500 a 650 J em 20 P e de 900 a 960 J em 20 P, com energia média aplicada de 493 J (± 309. A cTnI permaneceu dentro da normalidade nos 76 P. Com o aumento da CC, ocorreu elevação de CPK (> valor de p = 0,007, CKMB-atividade (> valor de p = 0,002, CKMB-M (> valor de p = 0,03 e mioglobina (> valor de p = 0,015. Correlação positiva foi observada entre a CC e picos de CPK (r = 0,660; p OBJECTIVE: Evaluate, based on the evolution of new biochemical markers of cardiac damage, if electrical cardioversion (ECV causes myocardial injury. METHODS: Seventy-six patients (P submitted to elective ECV for atrial fibrillation or atrial flutter were evaluated. Creatine phosphokinase (CPK, CK-MB activity, CK-MB mass, myoglobin and cardiac troponin I (cTnI were measured before, and 6 and 24 hours after ECV. RESULTS: ECV was successful in 58 P (76.3%. Cumulative energy (CE was up to 350 joules (J in 36 P, from 500 to 650 J in 20 P and from 900 to 960 J in 20 P; the mean energy delivered being 493 J (± 309. The levels of cTnI remained within normal limits in all 76 P. The increase of cumulative energy led to an elevation of CPK levels (> p value = 0.007, CK-MB activity (> p value = 0.002, CK-MB mass (> p value = 0.03, and myoglobin (> p value = 0.015. A positive correlation between the cumulative energy and CPK peaks was observed (r = 0.660; p < 0.001, CK-MB activity (r = 0.429; p < 0.0001, CK-MB mass (r = 0

(Acetylacetonato-κ2O,O′carbonyl[tris(naphthalen-1-ylphosphane-κP]rhodium(I acetone hemisolvate

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Hezron Ogutu

2012-04-01

Full Text Available The title compound, [Rh(C5H7O2(C30H21P(CO]·0.5C3H6O, has two different complex molecules in the asymmetric unit, with the RhI atoms in slightly distorted square-planar coordination environments. The molecules are packed as two monomeric molecules with one acetone solvent molecule sitting at the centre.

Observation of $J/\\psi$ p resonances consistent with pentaquark states in$\\wedge_ b^0$ → $J/\\psi K^−p$ decays

CERN Document Server

AUTHOR|(INSPIRE)INSPIRE-00400750

The observation of structures consistent with charmonium-pentaquark states decaying to $J/\\psi p$ in $\\wedge_b^0$ → $J/\\psi K^−p$ decays is presented. The data sample analyzed corresponds to an integrated luminosity of $3 fb^−1$ acquired with the LHCb detector from 7 and 8 TeV $pp$ collisions. An amplitude analysis was performed which utilized all six kinematic degrees of freedom in the decay. It was shown that adequate descriptions of the data are unattainable with only $K^−p$ resonances in the amplitude model. For satisfactory fits of the data, it was found to be necessary to include two $J/\\psi p$ resonances, with each having significances of over 9 standard deviations. One has a mass of $4449.8 \\pm1.7\\pm2.2 MeV$ and a width of $39\\pm5\\pm16 MeV$, while the second is broader, with a mass of $4380 \\pm8\\pm29 MeV$ and a width of $205\\pm18\\pm87 MeV$. The $J^P$ assignments could not be uniquely determined, though there is a preference for one to have spin 3/2 and the other spin 5/2 with an opposite parit...

O pêso do coração em chagásicos crônicos

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J. E. H. Pitella

1970-10-01

Full Text Available Os AA. estudaram o pêso do coração em 740 chagásicos crônicos. O pêso do coração de indivíduos que faleceram com e sem I. C. C. e sem "megas" variou de 100 a 1.075 g. O maior número (564 era de corações com I. C. C. e pesavam entre 201 e 800 g, e apenas 45, sem I. C .C., pesavam entre 151 e 500 g. O peso do coração de indivíduos que faleceram com e sem I. C. C. mas com "megas" variou de 100 a 750 g. O maior número de corações com (39 e sem (60 I. C. C. pesou entre 101 e 450 g. O pêso médio dos corações chagásicos (740 foi de 435 ±5,6 g. Já o pêso médio dos corações chagásicos com e sem I. C. C., sem "megas' foi de 479±5,6 g e o pêso médio dos corações com e sem I. C. C. e com "megas" foi de 314±12,6 g. A análise estatística aplicada demonstrou haver diferença significativa en¬tre as duas médias. A hipotrofia constatada nos corações de indivíduos portadores de "megas", especialmente de megaesôfago, está relacionada com o estado de desnutrição e não com a idade.

Density of states measurements in a p-i-n solar cell

Energy Technology Data Exchange (ETDEWEB)

Crandall, R.S.; Wang, Q. [National Renewable Energy Lab., Golden, CO (United States)

1996-05-01

The authors describe results of density of states (DOS) profiling in p-i-n solar-cell devices using drive-level capacitance (DLC) techniques. Near the p-i interface the defect density is high, decreasing rapidly into the interior, reaching low values in the central region of the cell, and rising rapidly again at the n-i interface. They show that the states in the central region are neutral dangling-bond defects, whereas those near the interfaces with the doped layers are charged dangling bonds.

An analysis of power transients observed in SPERT I reactors

International Nuclear Information System (INIS)

Clancy, B.E.; Connolly, J.W.; Harrington, B.V.

1976-04-01

The analytical method described in Part I of this series has been applied to the calculation of spert I transients performed with higher initial moderator temperatures and also to those performed in a highly undermoderated core. Reasonable agreement has been obtained between calculated and experimental burst data. (author)

Exchange rate and trade balance: J-curve effect

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Petrović Pavle

2010-01-01

Full Text Available This paper shows that exchange rate depreciation in Serbia improves trade balance in the long run, while giving rise to a J-curve effect in the short run. These results add to the already existent empirical evidence for a diverse set of other economies. Both Johansen's and autoregressive distributed lag approach are respectively used giving similar long-run estimates showing that real depreciation improves trade balance. Corresponding errorcorrection models as well as impulse response functions indicate that, following currency depreciation, trade balance first deteriorates before it later improves, i.e. exhibiting the J-curve pattern. These results are relevant for policy making both in Serbia and in a number of other emerging Europe countries as they face major current account adjustments after BoP crises of 2009.

Status of the EXOTIC-8 programme and first in-pile results for Li{sub 2}TiO{sub 3} pebbles

Energy Technology Data Exchange (ETDEWEB)

Van der Laan, J G; Stijkel, M P [Netherlands Energy Research Foundation (ECN), Petten (Netherlands); Conrad, R

1998-03-01

After renewal of the Tritium Measuring Station the HFR is again fully operational for in-pile breeder irradiations. The EXOTIC-8 series has started with first three experiments on June 12, 1997. First in-pile results have been obtained for Li{sub 2}TiO{sub 3}-pebbles supplied by CEA: preliminary analyses indicate satisfactory in-pile behaviour with fast recovery from transient conditions. Five further experiments have been defined which implies that in the present planning EXOTIC-8 is filled completely up to Fall`98 and 2 of 4 positions are occupied up to Spring`99. P.I.E. results will be obtained from Spring`98 onwards. (J.P.N.)

A new X-ray transient, IGR J17451-3022, discovered by INTEGRAL/JEM-X near the Galactic Centre

DEFF Research Database (Denmark)

Chenevez, Jérôme; Vandbaek Kroer, L.; Budtz-Jørgensen, Carl

2014-01-01

The JEM-X twin X-ray monitors on board the INTEGRAL satellite has detected a new X-ray transient during recent observations of the Galactic Centre and Bulge regions. The new source named IGR J17451-3022 has the following coordinates: R.A. = 266.27 Dec. = -30.38 with a 2arcmin 90% confidence radiu...

J/ψ production in p anti p collisions at √s = 1.8 TeV

International Nuclear Information System (INIS)

Abachi, S.

1995-07-01

The authors have studied J/ψ production in p anti p collisions at √s = 1.8 TeV with the D0 detector at Fermilab, using a μ + μ - data sample corresponding to an integrated luminosity of 13 pb -1 . They have measured the inclusive J/ψ production cross section as a function of J/ψ transverse momentum p T . For the kinematic range p T > 8 GeV/c and |η| + μ - ) · σ(p anti p → J/ψ + X) = 1.93 ± 0.16(stat) ± 0.43(syst) nb. Using the muon impact parameter they have estimated the fraction of J/ψ mesons coming from B meson decays to be f b = 0.35 ± 0.09 (stat) ± 0.10 (syst) and inferred the inclusive b production cross section. From the information on the event topology a fraction of non-isolated J/ψ events has been measured to be f non-isol = 0.64 ± 0.09(stat) ± 0.06(syst). They have also obtained the fraction of events resulting from radiative decays of χ c states as f χ = 0.30 ± 0.07(stat) ± 0.07(syst). They discuss the implications of the measurements for charmonium production processes

Electronic Mechanisms of Intra and Intermolecular J Couplings in Systems with C-H···O Interactions

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Claudio N. Cavasotto

2003-04-01

Full Text Available Abstract: Correlation effects on the change of 1J(CH couplings in model systems I:NCH...H2O and II:CH4...H2O as a function of the H...O distance are discussed. RPA and SOPPA results follow a similar trend in system II. In system I RPA values decrease monotonously as the H...O distance decreases, while SOPPA ones exhibit flat maximum near equilibrium. Such different behavior is ascribed to the π-transmitted component. Intermolecular couplings at the equilibrium geometry of I are analyzed by means of the CLOPPA approach. The larger absolute value of 2hJ(CO compared to 1hJ(HO is found to arise from contributions involving a vacant LMO localized in the C-H...O moiety.

Hvad spillede de egentlig på P3 i januar 1963? 50 år med P3

DEFF Research Database (Denmark)

Smith-Sivertsen, Henrik

2015-01-01

ungdomsmusik, før P3 kom til, bl.a. med Jørn Hjorting som vært, og Jørgen de Mylius var langtfra den eneste af de nye P3-værter, der slog et ekstra slag for den ny musik. Smith-Sivertsen viser, at Pedro Biker og Hans Jørgen Skov bidrog i lige så høj grad til udbredelsen af fx The Beatles....

OXIDACIÓN DE p -NITROFENOL USANDO TiO 2 -ADENOSINA MONOFOSFATO I OXIDATION OF p -NITROPHENOL USING TiO 2 -ADENOSIN MONOPHOSPHATE

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Carlos F. Rivas

2018-04-01

Full Text Available The surface of TiO2 was modified with the nucleotides adenosine 3’-monophosphate (AMP’3 and Adenosine 5’-monophosphate (AMP’5. The adsorption of nucleotides was adjusted to Langmuir ́s adsorption model, determining that the optimal condition for TiO 2 modification was at neutral pH. UV-Visible Diffuse Reflectance and IR Attenuated Total Reflectance spectra show that the chemisorption of nucleotides take placed on TiO 2 anatase. The new catalysts (TiO 2 -nucleotide improved the photodegradation of p -nitrophenol in a wide range of pH as compared with the titanium dioxide precursor. Most photoactivity was generated by using the new photocatalytic in the degradation of p -nitrophenol at pH = 6, obtaining high values for the pseudo first order kinetic constant (0.0254 min -1 and 0.0244 min -1 for TiO 2 -AMP’3 and TiO 2 -AMP’5, respectively. For all pH, the trend obtained for the photodegradation was: TiO 2 -AMP ́3 @ TiO 2 -AMP’5 > TiO 2 . Langmuir-Hinshelwood kinetics shows that the contribution of the surface reac tion rate governs the oxidation of the contaminant.

Videolectures og peer feedback i færdighedestræning på biomekanikstudiet på SDU

DEFF Research Database (Denmark)

Lauridsen, Henrik Hein; Nørgaard, Cita

studerende - hvordan kan vi fremme feedback i vores undervisningsmodeller? oÅbne muligheden for at give både synkron og asynkron Feedback på studerendes træningssituationer i færdighedslaboratoriet. oOptimere muligheden for at studerende kan give peer Feedback på hinandens optagelser vedr. indøvelse af...

A LUMINOUS, FAST RISING UV-TRANSIENT DISCOVERED BY ROTSE: A TIDAL DISRUPTION EVENT?

International Nuclear Information System (INIS)

Vinkó, J.; Wheeler, J. C.; Chatzopoulos, E.; Marion, G. H.; Yuan, F.; Akerlof, C.; Quimby, R. M.; Ramirez-Ruiz, E.; Guillochon, J.

2015-01-01

We present follow-up observations of an optical transient (OT) discovered by ROTSE on 2009 January 21. Photometric monitoring was carried out with ROTSE-IIIb in the optical and Swift in the UV up to +70 days after discovery. The light curve showed a fast rise time of ∼10 days followed by a steep decline over the next 60 days, which was much faster than that implied by 56 Ni— 56 Co radioactive decay. The Sloan Digital Sky Survey Data Release 10 database contains a faint, red object at the position of the OT, which appears slightly extended. This and other lines of evidence suggest that the OT is of extragalactic origin, and this faint object is likely the host galaxy. A sequence of optical spectra obtained with the 9.2 m Hobby-Eberly Telescope between +8 and +45 days after discovery revealed a hot, blue continuum with no visible spectral features. A few weak features that appeared after +30 days probably originated from the underlying host. Fitting synthetic templates to the observed spectrum of the host galaxy revealed a redshift of z = 0.19. At this redshift, the peak magnitude of the OT is close to –22.5, similar to the brightest super-luminous supernovae; however, the lack of identifiable spectral features makes the massive stellar death hypothesis less likely. A more plausible explanation appears to be the tidal disruption of a Sun-like star by the central supermassive black hole. We argue that this transient likely belongs to a class of super-Eddington tidal disruption events

XMM-Newton and Swift spectroscopy of the newly discovered very faint X-ray transient IGR J17494-3030

NARCIS (Netherlands)

Armas Padilla, M.; Wijnands, R.; Degenaar, N.

2013-01-01

A growing group of low-mass X-ray binaries are found to be accreting at very faint X-ray luminosities of <1036 erg s−1 (2-10 keV). One such system is the new X-ray transient IGR J17494-3030. We present Swift and XMM-Newton observations obtained during its 2012 discovery outburst. The Swift

Transferência de calor transiente na agitação linear intermitente de latas Transient heat transfer by intermittent shake of cans

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Homero Ferracini Gumerato

2007-09-01

Full Text Available Foi estudada a transferência de calor transiente na agitação linear e intermitente (ALI de embalagens metálicas contendo simulantes de alimentos, objetivando-se sua aplicação em processos de pasteurização ou esterilização e conseqüentes tratamentos térmicos mais eficientes, homogêneos e com produto de melhor qualidade. Foram utilizados quatro meios fluidos simulantes de alimentos de diferentes viscosidades e massas específicas: três óleos e água. Foram combinados efeitos de cinco tratamentos, sendo: meio simulante (4 níveis, espaço livre (3 níveis, freqüência de agitação (4 níveis, amplitude de agitação (2 níveis e posição das latas (4 níveis. Os ensaios de aquecimento e resfriamento foram feitos em tanque com água à temperatura de 98 °C e 17-20 °C, respectivamente. Com os dados de penetração de calor em cada experimento, foram calculados os parâmetros de penetração de calor fh, jh, fc e jc. Os resultados foram modelados utilizando-se grupos de números adimensionais e expressos em termos de Nusselt, Prandtl, Reynolds e funções trigonométricas (com medidas de amplitude e freqüência de agitação, espaço livre e dimensões da embalagem. Foram estabelecidas as duas Equações gerais para as fases de aquecimento e resfriamento: Nu = ReA –0,199.Pr –0,288.sen(xa/AM0,406.cos(xf/FA–1,039.cos((xf/FA.(EL/H.p–4,556 Aquecimento Nu = 0,1295.ReA–0,047.Pr –0,193.sen(xa/AM0,114.cos(xf/FA–0,641.cos((xf/FA.(EL/H.p–2,476 Resfriamento O processo de ALI pode ser aplicado em pasteurizadores ou autoclaves estáticas horizontais e verticais, com modificações simples. Concluiu-se que a ALI aumenta significativamente a taxa de transferência de calor, tanto no aquecimento como no resfriamento.The transient heat transfer during the intermittent and linear shaking of tin plate cans containing simulating food was studied in order to apply this technology in the pasteurization and sterilization processes, achieving

I Scientic Conferences CBIOS - Proceedings

Directory of Open Access Journals (Sweden)

L. Monteiro Rodrigues et al.

2014-12-01

Filipe Pereira 10 October | 10 de Outubro 1st Session |Sessão 1 Coordenadoras dos Grupos PTT (Pharmacology, Therapeutics and Tecnology e FSP (Food Sciences and Phytochemistry Catarina Reis Maria do Céu Costa Projects in progress: Biomedical Sciences | Projetos em curso: Ciências Biomédicas Ana Sofia Fernandes Projects in progress: Biopharmaceutical Sciences | Projetos em curso: Ciências Biofarmacêuticas Catarina Rosado Keynote Maria Mota (IMM - FMUL 2st Session |Sessão 2 Projects in progress: Phytochemical and Nutrition | Projetos em curso: Fitoquímica e Nutrição Patrícia Rijo Projects in progress: Animal Health | Projetos em curso: Saúde Animal Margarida Alves Panel Comunications | Comunicações em Posters Abstract List | Lista de Resumos Submetidos P.01 ANTI-CANCER ACTIVITY OF THE NATURAL COMPOUND PARVIFLORON D. S. Rosa, A. Santos, S. Cerqueira, I. Ribeiro, V. Correia, P. Rijo, F. Simões, N. Saraiva and A.S. Fernandes P.02 SPHINGOLIPID DOMAINS OF A SACCHAROMYCES CEREVISIAE STRAIN RESISTANT TO NYSTATIN AND MICONAZOLE: TOWARDS A RELATION BETWEEN MEMBRANE BIOPHYSICAL PROPERTIES AND RESISTANCE TO ANTIFUNGAL DRUGS. C.A.C. Antunes, J.T. Marquês, A.S. Viana, H:S. Marinho and R.F.M. de Almeida. P.03 ANTI-OXIDANT PROPERTIES OF THE NATURAL COMPOUND PARVIFLORON D. S. Rosa, V. Correia, I. Ribeiro, P. Rijo, F. Simões, N. Saraiva and A.S. Fernandes. P.04 COSMETIC POTENTIAL OF SILICONE-BASED FORMULATIONS. M. Salvado, J. Beites, J. Portugal Mota and C. Rosado. P.05 DESENVOLVIMENTO E CARACTERIZAÇÃO DE COSMÉTICOS CONTENDO PRODUTOS NATURAIS – A BIOPHYSICAL STUDY. A. F. Antunes, P. Rijo, J. Portugal Mota and C. Reis. P.06 THE INFLUENCE OF THE EPIDERMIS ON SKIN VISCOELASTICITY. C. Rosado, R. Barbosa, R. Fernando, F. Antunes and L.M. Rodrigues. P.07 LIPID-BASE IMPLANTS AS DELIVERY SYSTEMS OF PROTEINS. A. Campos, J. Portugal Mota, N. Saraiva and M. Nicolai. P.08 LIPID BLENDS FOR CONTROLLED RELEASE FROM IMPLANTS. C. Antunes, V. Amaral, T. Santos de Almeida, M. Nicolai and

Spectroscopic constants and potential energy curve of the iodine weakly bound 1u state correlating with the I(2P1/2) + I(2P1/2) dissociation limit

International Nuclear Information System (INIS)

Akopyan, M E; Baturo, V V; Lukashov, S S; Poretsky, S A; Pravilov, A M

2015-01-01

The stepwise three-step three-color laser population of the I 2 (β1 g , ν β , J β ) rovibronic states via the B0 u + , ν B , J B rovibronic states and rovibronic levels of the 1 u (bb) and 0 g + (bb) states mixed by hyperfine interaction is used for determination of rovibronic level energies of the weakly bound I 2 (1 u (bb)) state. Dunham coefficients of the state, Y i0 (i = 0–3), Y i1 (i = 0–2), Y 02 and Y 12 for the v 1 u  = 1–5, 8, 10, 15 and J 1 u  ≈ 9–87 ranges, the dissociation energy of the state, D e , and equilibrium I–I distance, R e , as well as the potential energy curve are determined. There are aperiodicities in the excitation spectrum corresponding to the β, ν β  = 23, J β  ← 1 u (bb), ν 1u  = 4, 5, J 1u progressions in the I 2  + Rg = He, Ar mixture, namely, a great number of lines which do not coincide with the R or P line progressions. Their positions conflict with the ΔJ-even selection rule. Furthermore, they do not correspond to the ΔJ-odd progression. (paper)

Discovery of the third transient X-ray binary in the galactic globular cluster Terzan 5

Energy Technology Data Exchange (ETDEWEB)

Bahramian, Arash; Heinke, Craig O.; Sivakoff, Gregory R.; Gladstone, Jeanette C. [Department of Physics, University of Alberta, CCIS 4-183, Edmonton, AB T6G 2E1 (Canada); Altamirano, Diego; Wijnands, Rudy [Astronomical Institute " Anton Pannekoek," University of Amsterdam, Science Park 904, 1098 XH Amsterdam (Netherlands); Homan, Jeroen [Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, 70 Vassar Street, Cambridge, MA 02139 (United States); Linares, Manuel [Instituto de Astrofísica de Canarias, c/Vía Láctea s/n, E-38205 La Laguna, Tenerife (Spain); Pooley, David [Department of Physics, Sam Houston State University, Huntsville, TX 77341 (United States); Degenaar, Nathalie, E-mail: bahramia@ualberta.ca [Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109 (United States)

2014-01-10

We report and study the outburst of a new transient X-ray binary (XRB) in Terzan 5, the third detected in this globular cluster, Swift J174805.3-244637 or Terzan 5 X-3. We find clear spectral hardening in Swift/XRT data during the outburst rise to the hard state, thanks to our early coverage (starting at L{sub X} ∼ 4 × 10{sup 34} erg s{sup –1}) of the outburst. This hardening appears to be due to the decline in relative strength of a soft thermal component from the surface of the neutron star (NS) during the rise. We identify a Type I X-ray burst in Swift/XRT data with a long (16 s) decay time, indicative of hydrogen burning on the surface of the NS. We use Swift/BAT, MAXI/GSC, Chandra/ACIS, and Swift/XRT data to study the spectral changes during the outburst, identifying a clear hard-to-soft state transition. We use a Chandra/ACIS observation during outburst to identify the transient's position. Seven archival Chandra/ACIS observations show evidence for variations in Terzan 5 X-3's nonthermal component but not the thermal component during quiescence. The inferred long-term time-averaged mass accretion rate, from the quiescent thermal luminosity, suggests that if this outburst is typical and only slow cooling processes are active in the NS core, such outbursts should recur every ∼10 yr.

Efeito do praziquantel incorporado a lipossomas nos diferentes estágios de desenvolvimento dos ovos de <i>Schistosoma mansonii>

Directory of Open Access Journals (Sweden)

T. F. FREZZA

2009-01-01

Full Text Available <p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify; mso-layout-grid-align: none;"> A esquistossomose mansônica é causada pelo trematódeo digenético intravascular <i>Schistosoma mansonii>. Para o tratamento dessa enfermidade o praziquantel (PZQ e a oxamniquina (OXA são os fármacos escolhidos. No entanto, esses fármacos apresentam limitações quanto à ação e casos de resistência ou tolerância já foram relatados. Por esse motivo, são necessários os estudos de novas alternativas que visam melhorar os fármacos já existentes, como a incorporação desses em lipossomas. Este estudo verificou a ação do praziquantel incorporado a lipossomas (lip.PZQ sobre os ovos de <i>S. mansonii>, linhagem BH em camundongos <i>Mus musculusi> (<i>Swiss>- SPF. Para tanto, foram testadas quatro doses de PZQ e lip.PZQ (47; 60; 250 e 300mg/kg sendo que parte dos camundongos foi tratada após 30 dias de infecção e outra após 45 dias. A análise do oograma mostrou que a dose lip.PZQ 300mg/kg administrada no 45º dia de infecção foi mais eficaz, pois reduziu a oviposição pelas fêmeas de <i>S. mansonii>. Palavras-chave: <i>Schistosoma mansonii>; praziquantel; lipossoma; oograma. p>

Judd-Ofelt analysis and improvement of thermal and optical properties of tellurite glasses by adding P{sub 2}O{sub 5}

Energy Technology Data Exchange (ETDEWEB)

Jlassi, I. [Laboratoire de Physico-Chimie des Materiaux Mineraux et leurs Applications, Centre National de Recherches en Sciences des Materiaux, B.P. 95, Hammam-Lif 2050 (Tunisia); Elhouichet, H., E-mail: habib.elhouichet@fst.rnu.t [Laboratoire de Physico-Chimie des Materiaux Mineraux et leurs Applications, Centre National de Recherches en Sciences des Materiaux, B.P. 95, Hammam-Lif 2050 (Tunisia); Departement de Physique, Faculte des Sciences de Tunis, Campus ElManar 2092 (Tunisia); Ferid, M. [Laboratoire de Physico-Chimie des Materiaux Mineraux et leurs Applications, Centre National de Recherches en Sciences des Materiaux, B.P. 95, Hammam-Lif 2050 (Tunisia); Barthou, C. [Institut des Nanosciences de Paris, Universite P. et M. Curie, Centre Nationale de la Recherche Scientifique, UMR-7588, Campus Boucicaut, 140 rue de Lourmel, 75015 Paris (France)

2010-12-15

Er{sup 3+} and Er{sup 3+}/Yb{sup 3+} co-doped tellurite glasses, suitable for developing optical fiber laser and amplifier, have been elaborated from the conventional melt-quenching method. Results of differential scanning calorimetry (DSC) measurements indicate a good thermal stability of tellurite glasses. The DSC measurements show an improvement of thermal stability of glass hosts after adding P{sub 2}O{sub 5}. Absorption spectrum from near infrared to visible was obtained and the Judd-Ofelt (J-O) intensity parameters ({Omega}{sub 2}, {Omega}{sub 4}, and {Omega}{sub 6}) were determined. Spontaneous emission probabilities of some relevant transitions, branching ratio, and radiative lifetimes of several excited states of Er{sup 3+} have been predicted using intensity J-O parameters. Absorption cross-section and calculated emission cross-section, using the McCumber method, for the {sup 4}I{sub 13/2{yields}}{sup 4}I{sub 15/2} transition, were determined and compared for the doped and co-doped glasses. Energy transfer (ET) and effect of changing concentration of P{sub 2}O{sub 5} and Yb{sup 3+} ions on spectroscopic properties were investigated. It was found that the addition of P{sub 2}O{sub 5} can increase the symmetry of the Er{sup 3+} ion. As a consequence, PL lifetime becomes more longer. The spectroscopic properties and the efficient infrared luminescence indicate that Er{sup 3+} doped TeO{sub 2}-ZnO-Na{sub 2}O-Er{sub 2}O{sub 3}(TZNE) is a promising laser and amplifier materials and may be a potentially useful material for developing upconversion fiber optical devices.

Thermodynamic studies of thorium phosphate diphosphate and phase investigations of Th-P-O and Th-P-H2O systems

International Nuclear Information System (INIS)

Rawat, Deepak; Dash, Smruti; Joshi, A.R.

2014-01-01

Highlights: • Δ f H m o (298.15K)andC p,m o (T) of Th 2 P 3 O 13 H 3 (cr), Th 2 P 3 O 12 H(cr), α-Th 4 P 6 O 23 (cr) and β-Th 4 P 6 O 23 (cr) were measured. • Thermo-chemical reaction scheme was formulated to calculate the standard molar enthalpy of formation of β-Th 4 (PO 4 ) 4 P 2 O 7 (cr). • The thermodynamic functions of the compounds present in Th-P-O and Th-P-H 2 O systems have been estimated. • The Gibbs phase diagram and predominant area diagrams for Th-P-O system have been calculated. • E H –pH diagram of Th-P-H 2 O system has been computed to determine stability of β-Th 4 P 6 O 23 (cr) in the ground water. - Abstract: The standard molar enthalpy of formation of thorium phosphate diphosphate, β-Th 4 (PO 4 ) 4 P 2 O 7 (cr) has been determined using an isoperibol solution calorimeter, a differential scanning calorimeter and phase transition data of high temperature calorimeter. The enthalpy of precipitation of thorium phosphate-hydrogenphosphate hydrate, Th 2 (PO 4 ) 2 (HPO 4 )·H 2 O(cr), was measured at 298.15 K using an isoperibol solution calorimeter. Heat capacities of α-Th 4 (PO 4 ) 4 P 2 O 7 (cr) and β-Th 4 (PO 4 ) 4 P 2 O 7 (cr) were measured using a Differential Scanning Calorimeter. Combining these experimental data, and other auxiliary data from the literature, thermo-chemical reaction scheme was devised to calculate the standard molar enthalpy of formation of β-Th 4 (PO 4 ) 4 P 2 O 7 (cr) to be {−10565.5 ± 13.6} kJ mol −1 . The thermodynamic functions for β-Th 4 (PO 4 ) 4 P 2 O 7 (cr) have been computed using Δ f H m o (298.15K),C p,m o (T) and literature data. The Gibbs phase diagram and predominant area diagrams for Th-P-O system have been computed using the thermodynamic information of the various phase present in Th-P, P-O and ThO 2 -P 2 O 5 systems. E H –pH diagram of Th-P-H 2 O system has been computed to determine stability of Th 4 P 6 O 23 (cr) in ground water

Systematyka Gleb Polski - Stan Aktualny i Dalszy Rozwój

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Kabała Cezary

2014-10-01

Full Text Available Piąte wydanie Systematyki gleb Polski umacnia zasadę klasyfikacji gleb w oparciu o ilościowo zdefiniowane poziomy i właściwości diagnostyczne. Nowe kryteria klasyfikacji bazują na podziałach międzynarodowych, jednak jednoczesne stosowanie rozwiązań zaczerpniętych z FAO-WRB i US Soil Taxonomy albo niekonsekwentne stosowanie ustalonych definicji jest powodem wewnętrznej niespójności klasyfikacji. Dalsze doskonalenie systematyki gleb Polski powinno objąć: wybórjednego międzynarodowego systemu referencyjnego dla poziomów i właściwości diagnostycznych, ustalenie hierarchii priorytetów klasyfikacyjnych i klucza do klasyfikacji gleb, doprecyzowanie definicji unikalnych poziomów diagnostycznych, opracowanie uniwersalnych zasad wyróżniania podtypów oraz doprecyzowanie kryteriów ilościowych na styku j ednostek. Należy również podj ąć próbę zmniej -szenia liczby typów i podtypów gleb, co może ułatwić odbiór, zrozumienie oraz nauczanie systematyki.

INTEGRAL Galactic Bulge monitoring: transient activity from KS 1741-293, MXB 1730-335, and IGR J17498-2921

DEFF Research Database (Denmark)

Chenevez, Jérôme; Brandt, Søren; Kuulkers, E.

2011-01-01

sigma upper limit of 10 mCrab (40-100 keV) A series of 15 type II bursts is detected when the source was inside the JEM-X field of view, with an average burst recurrence time of about four minutes. The new transient source IGR J17498-2921 (see, e.g., ATels #3551, #3556, #3558, #3568, #3606) is only...

Photoluminescence transient study of surface defects in ZnO nanorods grown by chemical bath deposition

Science.gov (United States)

Barbagiovanni, E. G.; Strano, V.; Franzò, G.; Crupi, I.; Mirabella, S.

2015-03-01

Two deep level defects (2.25 and 2.03 eV) associated with oxygen vacancies (Vo) were identified in ZnO nanorods (NRs) grown by low cost chemical bath deposition. A transient behaviour in the photoluminescence (PL) intensity of the two Vo states was found to be sensitive to the ambient environment and to NR post-growth treatment. The largest transient was found in samples dried on a hot plate with a PL intensity decay time, in air only, of 23 and 80 s for the 2.25 and 2.03 eV peaks, respectively. Resistance measurements under UV exposure exhibited a transient behaviour in full agreement with the PL transient, indicating a clear role of atmospheric O2 on the surface defect states. A model for surface defect transient behaviour due to band bending with respect to the Fermi level is proposed. The results have implications for a variety of sensing and photovoltaic applications of ZnO NRs.

Pair Identity and Smooth Variation Rules Applicable for the Spectroscopic Parameters of H2O Transitions Involving High-J States

Science.gov (United States)

Ma, Q.; Tipping, R. H.; Lavrentieva, N. N.

2010-01-01

Two basic rules (i.e. the pair identity and the smooth variation) applicable for H2O transitions involving high-J states have been discovered. The origins of these rules are the properties of the energy levels and wavefunctions of H2O states with the quantum number J above certain boundaries. As a result, for lines involving high-J states in individually defined groups, all their spectroscopic parameters (i.e. the transition wavenumber, intensity, pressure-broadened half-width, pressure-induced shift, and temperature exponent) must follow these rules. One can use these rules to screen spectroscopic data provided by databases and to identify possible errors. In addition, by using extrapolation methods within the individual groups, one is able to predict the spectroscopic parameters for lines in this group involving very high-J states. The latter are required in developing high-temperature molecular spectroscopic databases such as HITEMP.

Avaliação fototóxica e <i>screening> mutagênico de extratos de propolis, <i>Aloe> spp. e <i>Hamamelis virginianai>

Directory of Open Access Journals (Sweden)

M. F.S. RAMOS

2009-01-01

Full Text Available <p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify; mso-layout-grid-align: none;"> A utilização de extratos vegetais em produtos farmacêuticos e cosméticos tem mostrado ser uma tendência mundial e cresceu substancialmente nas duas últimas décadas. No entanto, há ainda poucos relatos na literatura com relação à atividade mutagênica ou fototóxica de extratos vegetais. No presente trabalho foi avaliada a atividade fototóxica e o “screening” mutagênico de extratos fluidos e secos de própolis, <i>Aloe> spp. e <i>Hamamelis virginianai>. Na investigação de fototoxicidade foram realizados ensaios microbiológicos, utilizando cepas de <i>Candida albicansi> e <i>Saccharomyces cerevisiaei>, bem como ensaios biológicos com cobaias albinos. Extratos etanólicos de <i>Ruta graveolensi> e <i>Citrus> spp., além de 8-metoxipsoraleno (fármaco sintético padrão, foram usados como controles positivos em ambos os testes. A atividade mutagênica foi avaliada qualitativamente segundo o “spot test” descrito por Maron & Ames, com cepas de <i>Salmonella typhimuriumi> TA97, TA98, TA100 e TA102, empregando como controle positivo o óxido de 4-nitroquinolina. Não foi observada atividade fototóxica, em ambos os ensaios realizados, para qualquer dos extratos. O ensaio microbiológico demonstrou uma atividade fungistática ou fungicida nos extratos secos de hamamélis. Os resultados obtidos nos ensaios microbiológicos com a levedura <i>S. cerevisiaei> indicam que este microrganismo apresentou eficiência no procedimento de “screening” de atividade fototóxica comparável à obtida com <i>C. albicansi>. Os extratos vegetais não apresentaram atividade mutagênica nos ensaios preliminares realizados. Palavras-chave: <i>Aloe> spp., <i>Hamamelis virginianai>, própolis, fototoxicidade, mutagenicidade. p>

Device and performance parameters of Cu(In,Ga)(Se,S)2-based solar cells with varying i-ZnO layer thickness

International Nuclear Information System (INIS)

Macabebe, E.Q.B.; Sheppard, C.J.; Dyk, E.E. van

2009-01-01

In pursuit of low-cost and highly efficient thin film solar cells, Cu(In,Ga)(Se,S) 2 /CdS/i-ZnO/ZnO:Al (CIGSS) solar cells were fabricated using a two-step process. The thickness of i-ZnO layer was varied from 0 to 454 nm. The current density-voltage (J-V) characteristics of the devices were measured, and the device and performance parameters of the solar cells were obtained from the J-V curves to analyze the effect of varying i-ZnO layer thickness. The device parameters were determined using a parameter extraction method that utilized particle swarm optimization. The method is a curve-fitting routine that employed the two-diode model. The J-V curves of the solar cells were fitted with the model and the parameters were determined. Results show that as the thickness of i-ZnO was increased, the average efficiency and the fill factor (FF) of the solar cells increase. Device parameters reveal that although the series resistance increased with thicker i-ZnO layer, the solar cells absorbed more photons resulting in higher short-circuit current density (J sc ) and, consequently, higher photo-generated current density (J L ). For solar cells with 303-454 nm-thick i-ZnO layer, the best devices achieved efficiency between 15.24% and 15.73% and the fill factor varied between 0.65 and 0.67.

Swift follow-up of the newly discovered burster millisecond pulsar IGR J17511-3057

DEFF Research Database (Denmark)

Bozzo, E.; Ferrigno, C.; Kuulkers, E.

2009-01-01

Following the discovery of the new hard X-ray transient IGR J17511-3057 by INTEGRAL (Atel #2196) and its classification as a millisecond pulsar by RXTE (Atel #2197), a Swift ToO was performed. Swift/XRT observed IGR J17511-3057 on 2009-09-13 at 19:53:31 for a total exposure time of 4 ks. The first...

IGR J17454-2919: a new X-ray transient found by INTEGRAL/JEM-X close to the Galactic Center

DEFF Research Database (Denmark)

Chenevez, Jérôme; Brandt, Søren; Budtz-Jørgensen, Carl

2014-01-01

The JEM-X twin X-ray monitors on board the INTEGRAL satellite have again detected a new X-ray transient during the latest observation of the Galactic Center region. The new source named IGR J17454-2919 is found less than 24 arcmin from the Galactic Center. The source appears in both JEM-X 3-10 ke...

Effect of γ-radiation on electrical properties in glasses of AgI-Ag2O-V2O5-P2-O5 system

International Nuclear Information System (INIS)

El-Shaarawy, M.G.; Bayoumy, W.A.A.

2004-01-01

Five glasses of the AgI-Ag 2 O-V 2 O 5 -P 2 O 5 system exhibiting mixed electronic-ionic conduction were prepared and irradiated by γ-rays. The structures of the irradiated and unirradiated glasses were studied using density, FT-IR, X-ray diffraction (XRD), electron spin resonance (ESR) and scanning electron microscope (SEM). The electrical conductivity (σ), dielectric constant (ε') and dielectric loss (ε'') for the irradiated and unirradiated glasses are also investigated over a temperature range between 300-380 K and at a frequency from dc to 10 6 Hz. Both components of ionic σ i and electronic σ e conductivities were separated from the total conductivity σ tot =σ i + σ e using impedance spectroscopy method. The temperature dependencies of electronic and ionic conductivities as well as corresponding transference numbers were studied. The activation energy values E e and E i for both conduction processes were determined. The temperature dependence of ε' showed an increase in ε' with T. Each of ε' and ε'' was found to be dependent on the composition of the glass matrix. The effect of both γ-radiation and the framework composition of the glass on the electrical properties have been discussed. (author)

Spiral correlations in frustrated one-dimensional spin-1/2 Heisenberg J1-J2-J3 ferromagnets

International Nuclear Information System (INIS)

Zinke, R; Richter, J; Drechsler, S-L

2010-01-01

We use the coupled cluster method for infinite chains complemented by exact diagonalization of finite periodic chains to discuss the influence of a third-neighbor exchange J 3 on the ground state of the spin- 1/2 Heisenberg chain with ferromagnetic nearest-neighbor interaction J 1 and frustrating antiferromagnetic next-nearest-neighbor interaction J 2 . A third-neighbor exchange J 3 might be relevant to describe the magnetic properties of the quasi-one-dimensional edge-shared cuprates, such as LiVCuO 4 or LiCu 2 O 2 . In particular, we calculate the critical point J 2 c as a function of J 3 , where the ferromagnetic ground state gives way for a ground state with incommensurate spiral correlations. For antiferromagnetic J 3 the ferro-spiral transition is always continuous and the critical values J 2 c of the classical and the quantum model coincide. On the other hand, for ferromagnetic J 3 ∼ 1 | the critical value J 2 c of the quantum model is smaller than that of the classical model. Moreover, the transition becomes discontinuous, i.e. the model exhibits a quantum tricritical point. We also calculate the height of the jump of the spiral pitch angle at the discontinuous ferro-spiral transition.

CFD Tools for Design and Simulation of Transient Flows in Hypersonic Facilities

Science.gov (United States)

2010-03-24

enthalpy shock tunnel. The Aeronautical Journal, 95(949):324–334, 1991. [6] K. Hannemann , R. Krek, and G. Eitelberg. Latest calibration results of the HEG...K. Hannemann , P. A. Jacobs, J. M. Austin, A. Thomas, and T. J. McIntyre. Transient and steady-state flow in a small shock tube. In A. Paull et al

J Koshy

Indian Academy of Sciences (India)

Home; Journals; Bulletin of Materials Science. J Koshy. Articles written in Bulletin of Materials Science. Volume 25 Issue 2 April 2002 pp 95-99 Superconductors. Superconducting YBa2Cu3O7– thick film (c (0)$ = 92 K) on a newly developed perovskite ceramic substrate · S U K Nair P R S Warriar J Koshy · More Details ...

Comparison of the effects of caffeine and other methylxanthines on [Ca2+]i in rat ventricular myocytes.

Science.gov (United States)

Donoso, P.; O'Neill, S. C.; Dilly, K. W.; Negretti, N.; Eisner, D. A.

1994-01-01

1. The effects of caffeine and other methylxanthines were investigated on intracellular calcium concentration ([Ca2+]i) and contraction in rat isolated ventricular myocytes. The use of the fluorescent indicator, Indo-1, allowed simultaneous measurement of [Ca2+]i and the intracellular concentration of the methylxanthines. 2. Rapid application of caffeine (10 mM) produced a transient rise of [Ca2+]i which decayed to resting levels. This was accompanied by a transient contraction which decayed to a level above baseline. The addition of theophylline also produced a transient increase of [Ca2+]i. However, following the initial transient, contraction decayed before redeveloping to a maintained level. 3. Direct measurements showed that [caffeine]i rose more quickly than did [theophylline]i. The slower rise of [theophylline]i was associated with a delay in the increase of [Ca2+]i. At lower concentrations of the methylxanthines, theophylline was less effective than caffeine at initiating Ca release. The rate of entry of theobromine was similar to that of theophylline. 4. Isocaffeine did not produce a rise of [Ca2+]i. The rate of rise of [isocaffeine]i was much slower than that of either caffeine or theophylline. 5. Measurements of the oil:water partition coefficient showed that the order of relative partitioning into oil was: caffeine > theophylline > theobromine > isocaffeine. This is similar to the order of rate of entry into the cell. 6. We conclude that many of the differences in the effects of these methylxanthines can be attributed to differences in membrane permeability due to differences in oil:water partition. PMID:8004389

A novel 3D Ag(I)-MOF: Surfactant-directed syntheses and catalytic degradation of o/m/p-Nitrophenol

Energy Technology Data Exchange (ETDEWEB)

Wu, Xue-Qian [College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang 443002 (China); Wen, Guo-Xuan [College of Science, China Three Gorges University, Yichang 443002 (China); Wu, Ya-Pan; Dong, Wen-Wen; Zhao, Jun [College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang 443002 (China); Li, Dong-Sheng, E-mail: lidongsheng1@126.com [College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang 443002 (China)

2016-10-15

For the first time, sodium caprylate has been investigated to direct the crystal growth of 3D Ag-MOF, [Ag{sub 2}(ddcba)(4,4′-bipy){sub 2}] (1), constructing from 3,5-(di(2′,5′-dicarboxylphenyl)benozoic acid and 4,4′-bipy. The single crystal diffraction analyses shows that complex 1 possess 3D neutral framework with a three-connected ThSi{sub 2} (10{sup 3}-b) topology. Compound 1 exhibits predominant catalytic activity towards the degradation of o-Nitrophenol (ONP), m-Nitrophenol (MNP) and p-Nitrophenol (PNP) in aqueous solution. The kinetics of such catalytic degradation reactions was also studied. - Graphical abstract: A novel 3D Ag(I)-MOF with ThSi{sub 2} (10{sup 3}-b) topology exhibits predominant catalytic activity towards the degradation of o-Nitrophenol (ONP), m-Nitrophenol (MNP) and p-Nitrophenol (PNP) in aqueous solution. - Highlights: • A novel 3D Ag(I)-MOF with ThSi{sub 2} (10{sup 3}-b) topology. • Surfactant as additive for directing the crystal growth. • Predominant catalytic activities for the degradation of o/m/p-nitrophenol.

Observation of chi(cJ) decaying into the p(p)over-barK(+)K(-) final state

NARCIS (Netherlands)

Ablikim, M.; Achasov, M. N.; Alberto, D.; An, L.; An, Q.; An, Z. H.; Bai, J. Z.; Baldini, R.; Ban, Y.; Becker, J.; Berger, N.; Bertani, M.; Bian, J. M.; Bondarenko, O.; Boyko, I.; Briere, R. A.; Bytev, V.; Cai, X.; Cao, G. F.; Cao, X. X.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, S. J.; Chen, Y.; Chen, Y. B.; Cheng, H. P.; Chu, Y. P.; Cronin-Hennessy, D.; Dai, H. L.; Dai, J. P.; Dedovich, D.; Deng, Z. Y.; Denysenko, I.; Destefanis, M.; Ding, Y.; Dong, L. Y.; Dong, M. Y.; Du, S. X.; Fan, R. R.; Fang, J.; Fang, S. S.; Feng, C. Q.; Fu, C. D.; Fu, J. L.; Gao, Y.; Geng, C.; Goetzen, K.; Gong, W. X.; Greco, M.; Grishin, S.; Gu, M. H.; Gu, Y. T.; Guan, Y. H.; Guo, A. Q.; Guo, L. B.; Guo, Y. P.; Hao, X. Q.; Harris, F. A.; He, K. L.; He, M.; He, Z. Y.; Heng, Y. K.; Hou, Z. L.; Hu, H. M.; Hu, J. F.; Hu, T.; Huang, B.; Huang, G. M.; Huang, J. S.; Huang, X. T.; Huang, Y. P.; Hussain, T.; Ji, C. S.; Ji, Q.; Ji, X. B.; Ji, X. L.; Jia, L. K.; Jiang, L. L.; Jiang, X. S.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jing, F. F.; Kalantar-Nayestanaki, N.; Kavatsyuk, M.; Komamiya, S.; Kuehn, W.; Lange, J. S.; Leung, J. K. C.; Li, Cheng; Li, Cui; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, J. C.; Li, Lei; Li, N. B.; Li, Q. J.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. N.; Li, X. Q.; Li, X. R.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Liao, X. T.; Liu, B. J.; Liu, B. J.; Liu, C. L.; Liu, C. X.; Liu, C. Y.; Liu, F. H.; Liu, Fang; Liu, G. C.; Liu, H.; Liu, H. B.; Liu, H. M.; Liu, H. W.; Liu, J. P.; Liu, K.; Liu, K. Y.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, X. H.; Liu, Y. B.; Liu, Y. W.; Liu, Yong; Liu, Z. A.; Liu, Z. Q.; Loehner, H.; Lu, G. R.; Lu, H. J.; Lu, J. G.; Lu, Q. W.; Lu, X. R.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Ma, C. L.; Ma, F. C.; Ma, H. L.; Ma, Q. M.; Ma, T.; Ma, X.; Ma, X. Y.; Maggiora, M.; Malik, Q. A.; Mao, H.; Mao, Y. J.; Mao, Z. P.; Messchendorp, J. G.; Min, J.; Mitchell, R. E.; Mo, X. H.; Muchnoi, N. Yu.; Nefedov, Y.; Ning, Z.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Pelizaeus, M.; Peters, K.; Ping, J. L.; Ping, R. G.; Poling, R.; Pun, C. S. J.; Qi, M.; Qian, S.; Qiao, C. F.; Qin, X. S.; Qiu, J. F.; Rashid, K. H.; Rong, G.; Ruan, X. D.; Sarantsev, A.; Schulze, J.; Shao, M.; Shen, C. P.; Shen, X. Y.; Sheng, H. Y.; Shepherd, M. R.; Song, X. Y.; Sonoda, S.; Spataro, S.; Spruck, B.; Sun, D. H.; Sun, G. X.; Sun, J. F.; Sun, S. S.; Sun, X. D.; Sun, Y. J.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tang, C. J.; Tang, X.; Tang, X. F.; Tian, H. L.; Toth, D.; Varner, G. S.; Wan, X.; Wang, B. Q.; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, Q.; Wang, S. G.; Wang, X. L.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. Y.; Wei, D. H.; Wen, Q. G.; Wen, S. P.; Wiedner, U.; Wu, L. H.; Wu, N.; Wu, W.; Wu, Z.; Xiao, Z. J.; Xie, Y. G.; Xu, G. F.; Xu, G. M.; Xu, H.; Xu, Y.; Xu, Z. R.; Xu, Z. Z.; Xue, Z.; Yan, L.; Yan, W. B.; Yan, Y. H.; Yang, H. X.; Yang, M.; Yang, T.; Yang, Y.; Yang, Y. X.; Ye, M.; Ye, M. H.; Yu, B. X.; Yu, C. X.; Yu, L.; Yuan, C. Z.; Yuan, W. L.; Yuan, Y.; Zafar, A. A.; Zallo, A.; Zeng, Y.; Zhang, B. X.; Zhang, B. Y.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, L.; Zhang, S. H.; Zhang, T. R.; Zhang, X. J.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, H. S.; Zhao, Jiawei; Zhao, Jingwei; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, X. H.; Zhao, Y. B.; Zhao, Z. G.; Zhao, Z. L.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, Y. H.; Zheng, Z. P.; Zhong, B.; Zhong, J.; Zhong, L.; Zhou, L.; Zhou, X. K.; Zhou, X. R.; Zhu, C.; Zhu, K.; Zhu, K. J.; Zhu, S. H.; Zhu, X. L.; Zhu, X. W.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.; Zuo, J. X.; Zweber, P.

2011-01-01

First measurements of the decays of the three chi(cJ) states to p (p) over barK(+)K(-) final states are presented. Intermediate phi -> K+K- and Lambda(1520) -> pK(-) resonance states are observed, and branching fractions for chi(cJ) -> (p) over barK(+) Lambda(1520), Lambda(1520)(Lambda) over bar

Na3Co2(As0.52P0.48)O4(As0.95P0.05)2O7.

Science.gov (United States)

Ben Smida, Youssef; Guesmi, Abderrahmen; Zid, Mohamed Faouzi; Driss, Ahmed

2013-11-30

The title compound, trisodium dicobalt(II) (arsenate/phosphate) (diarsenate/diphosphate), was prepared by a solid-state reaction. It is isostructural with Na3Co2AsO4As2O7. The framework shows the presence of CoX22O12 (X2 is statistically disordered with As0.95P0.05) units formed by sharing corners between Co1O6 octa-hedra and X22O7 groups. These units form layers perpendicular to [010]. Co2O6 octa-hedra and X1O4 (X1 = As0.54P0.46) tetra-hedra form Co2X1O8 chains parallel to [001]. Cohesion between layers and chains is ensured by the X22O7 groups, giving rise to a three-dimensional framework with broad tunnels, running along the a- and c-axis directions, in which the Na(+) ions reside. The two Co(2+) cations, the X1 site and three of the seven O atoms lie on special positions, with site symmetries 2 and m for the Co, m for the X1, and 2 and m (× 2) for the O sites. One of two Na atoms is disordered over three special positions [occupancy ratios 0.877 (10):0.110 (13):0.066 (9)] and the other is in a general position with full occupancy. A comparison between structures such as K2CdP2O7, α-NaTiP2O7 and K2MoO2P2O7 is made. The proposed structural model is supported by charge-distribution (CHARDI) analysis and bond-valence-sum (BVS) calculations. The distortion of the coordination polyhedra is analyzed by means of the effective coordination number.

Charmonium spectroscopy from inclusive photons in J/psi and psi' decays

International Nuclear Information System (INIS)

Gaiser, J.E.

1982-03-01

Comparing our precise measurements for the E1 transitions psi' → γ chi/sub J/ with theory has underscored the importance of including (i) spin and relativistic corrections, (ii) variations in the 2P and 1S wave function shapes resulting from corrections, and (iii) coupling to closed and open decay channels. Considering our best measured total widths, i.e., GAMMA/sub tot/(eta/sub c) and GAMMA/sub tot(chi/sub o/), it appears that higher order QCD corrections are important and large. Our measurements for the E1 rates chi/sub J/ → γ J/sub psi/ suffer from the large errors in GAMMA/sub tot/(chi/sub J/); our best value is for GAMMA(chi/sub o/ → γ J/psi), and the agreement here is slightly better with the corrected theories. Both the potential models and the lowest order QCD derived predictions are capable of consistency with our observed HFS, although QCD radiative corrections appear to go in the wrong direction (less splitting than measured). For the best measured M1 allowed pseudoscalar transition, J/psi → γ eta/sub c/, the naive potential model and dispersion theory predictions are roughly a factor of 2 large. Perhaps corrections to the M1 formula are important

Phosphoinositide 5-phosphatase Fig 4p is required for both acute rise and subsequent fall in stress-induced phosphatidylinositol 3,5-bisphosphate levels.

Science.gov (United States)

Duex, Jason E; Nau, Johnathan J; Kauffman, Emily J; Weisman, Lois S

2006-04-01

Phosphoinositide lipids regulate complex events via the recruitment of proteins to a specialized region of the membrane at a specific time. Precise control of both the synthesis and turnover of phosphoinositide lipids is integral to membrane trafficking, signal transduction, and cytoskeletal rearrangements. Little is known about the acute regulation of the levels of these signaling lipids. When Saccharomyces cerevisiae cells are treated with hyperosmotic medium the levels of phosphatidylinositol 3,5-bisphosphate (PI3,5P(2)) increase 20-fold. Here we show that this 20-fold increase is rapid and occurs within 5 min. Surprisingly, these elevated levels are transient. Fifteen minutes following hyperosmotic shock they decrease at a rapid rate, even though the cells remain in hyperosmotic medium. In parallel with the rapid increase in the levels of PI3,5P(2), vacuole volume decreases rapidly. Furthermore, concomitant with a return to basal levels of PI3,5P(2) vacuole volume is restored. We show that Fig 4p, consistent with its proposed role as a PI3,5P(2) 5-phosphatase, is required in vivo for this rapid return to basal levels of PI3,5P(2). Surprisingly, we find that Fig 4p is also required for the hyperosmotic shock-induced increase in PI3,5P(2) levels. These findings demonstrate that following hyperosmotic shock, large, transient changes occur in the levels of PI3,5P(2) and further suggest that Fig 4p is important in regulating both the acute rise and subsequent fall in PI3,5P(2) levels.

Split Active Asteroid P/2016 J1 (PANSTARRS)

Energy Technology Data Exchange (ETDEWEB)

Hui, Man-To; Jewitt, David [Department of Earth, Planetary, and Space Sciences, UCLA, 595 Charles Young Drive East, Box 951567, Los Angeles, CA 90095-1567 (United States); Du, Xinnan, E-mail: pachacoti@ucla.edu [Department of Physics and Astronomy, UCLA, 430 Portola Plaza, Box 951547, Los Angeles, CA 90095-1547 (United States)

2017-04-01

We present a photometric and astrometric study of the split active asteroid P/2016 J1 (PANSTARRS). The two components (hereafter J1-A and J1-B) separated either ∼1500 days (2012 May to June) or 2300 days (2010 April) prior to the current epoch, with a separation speed V {sub sep} = 0.70 ± 0.02 m s{sup −1} for the former scenario and 0.83 ± 0.06 m s{sup −1} for the latter. Keck photometry reveals that the two fragments have similar, Sun-like colors that are comparable to the colors of primitive C- and G-type asteroids. With a nominal comet-like albedo, p{sub R} = 0.04, the effective, dust-contaminated cross sections are estimated to be 2.4 km{sup 2} for J1-A and 0.5 km{sup 2} for J1-B. We estimate that the nucleus radii lie in the range 140 ≲  R {sub N} ≲ 900 m for J1-A and 40 ≲  R {sub N} ≲ 400 m for J1-B. A syndyne–synchrone simulation shows that both components have been active for 3–6 months, by ejecting dust grains at speeds ∼0.5 m s{sup −1} with rates ∼1 kg s{sup −1} for J1-A and 0.1 kg s{sup −1} for J1-B. In its present orbit, the rotational spin-up and devolatilization times of 2016 J1 are very small compared to the age of the solar system, raising the question of why this object still exists. We suggest that ice that was formerly buried within this asteroid became exposed at the surface, perhaps via a small impact, and that sublimation torques then rapidly drove it to breakup. Further disintegration events are anticipated owing to the rotational instability.

THE RRAT TRAP: INTERFEROMETRIC LOCALIZATION OF RADIO PULSES FROM J0628+0909

International Nuclear Information System (INIS)

Law, Casey J.; Bower, Geoffrey C.; Pokorny, Martin; Rupen, Michael P.; Sowinski, Ken

2012-01-01

We present the first blind interferometric detection and imaging of a millisecond radio transient with an observation of transient pulsar J0628+0909. We developed a special observing mode of the Karl G. Jansky Very Large Array to produce correlated data products (i.e., visibilities and images) on a timescale of 10 ms. Correlated data effectively produce thousands of beams on the sky that can localize sources anywhere over a wide field of view. We used this new observing mode to find and image pulses from the rotating radio transient (RRAT) J0628+0909, improving its localization by two orders of magnitude. Since the location of the RRAT was only approximately known when first observed, we searched for transients using a wide-field detection algorithm based on the bispectrum, an interferometric closure quantity. Over 16 minutes of observing, this algorithm detected one transient offset roughly 1' from its nominal location; this allowed us to image the RRAT to localize it with an accuracy of 1.''6. With a priori knowledge of the RRAT location, a traditional beam-forming search of the same data found two lower significance pulses. The refined RRAT position excludes all potential multiwavelength counterparts, limiting its optical luminosity to L i ' 31 erg s –1 and disfavoring source models with luminous neutron stars.

THE RRAT TRAP: INTERFEROMETRIC LOCALIZATION OF RADIO PULSES FROM J0628+0909

Energy Technology Data Exchange (ETDEWEB)

Law, Casey J.; Bower, Geoffrey C. [Department of Astronomy and Radio Astronomy Lab, University of California, Berkeley, CA (United States); Pokorny, Martin; Rupen, Michael P.; Sowinski, Ken [National Radio Astronomy Observatory, Socorro, NM (United States)

2012-12-01

We present the first blind interferometric detection and imaging of a millisecond radio transient with an observation of transient pulsar J0628+0909. We developed a special observing mode of the Karl G. Jansky Very Large Array to produce correlated data products (i.e., visibilities and images) on a timescale of 10 ms. Correlated data effectively produce thousands of beams on the sky that can localize sources anywhere over a wide field of view. We used this new observing mode to find and image pulses from the rotating radio transient (RRAT) J0628+0909, improving its localization by two orders of magnitude. Since the location of the RRAT was only approximately known when first observed, we searched for transients using a wide-field detection algorithm based on the bispectrum, an interferometric closure quantity. Over 16 minutes of observing, this algorithm detected one transient offset roughly 1' from its nominal location; this allowed us to image the RRAT to localize it with an accuracy of 1.''6. With a priori knowledge of the RRAT location, a traditional beam-forming search of the same data found two lower significance pulses. The refined RRAT position excludes all potential multiwavelength counterparts, limiting its optical luminosity to L{sub i{sup '}}<1.1 Multiplication-Sign 10{sup 31} erg s{sup -1} and disfavoring source models with luminous neutron stars.

Device and performance parameters of Cu(In,Ga)(Se,S){sub 2}-based solar cells with varying i-ZnO layer thickness

Energy Technology Data Exchange (ETDEWEB)

Macabebe, E.Q.B. [Department of Physics, Nelson Mandela Metropolitan University, P.O. Box 77000, Port Elizabeth 6031 (South Africa); Sheppard, C.J. [Department of Physics, University of Johannesburg, P.O. Box 524, Auckland Park 2006 (South Africa); Dyk, E.E. van, E-mail: ernest.vandyk@nmmu.ac.z [Department of Physics, Nelson Mandela Metropolitan University, P.O. Box 77000, Port Elizabeth 6031 (South Africa)

2009-12-01

In pursuit of low-cost and highly efficient thin film solar cells, Cu(In,Ga)(Se,S){sub 2}/CdS/i-ZnO/ZnO:Al (CIGSS) solar cells were fabricated using a two-step process. The thickness of i-ZnO layer was varied from 0 to 454 nm. The current density-voltage (J-V) characteristics of the devices were measured, and the device and performance parameters of the solar cells were obtained from the J-V curves to analyze the effect of varying i-ZnO layer thickness. The device parameters were determined using a parameter extraction method that utilized particle swarm optimization. The method is a curve-fitting routine that employed the two-diode model. The J-V curves of the solar cells were fitted with the model and the parameters were determined. Results show that as the thickness of i-ZnO was increased, the average efficiency and the fill factor (FF) of the solar cells increase. Device parameters reveal that although the series resistance increased with thicker i-ZnO layer, the solar cells absorbed more photons resulting in higher short-circuit current density (J{sub sc}) and, consequently, higher photo-generated current density (J{sub L}). For solar cells with 303-454 nm-thick i-ZnO layer, the best devices achieved efficiency between 15.24% and 15.73% and the fill factor varied between 0.65 and 0.67.

Lo privado de lo público para jóvenes universitarios en Colombia

Directory of Open Access Journals (Sweden)

Victoria Eugenia Pinilla Sepúlveda

2008-10-01

Full Text Available La investigación busca comprender los significados que tienen “lo público” y las relaciones adulto-joven para un grupo de jóvenes universitarios en sus acciones cotidianas y a partir de las narrativas de sus experiencias. Es un estudio hermenéutico que analiza las narrativas en el contexto de la dialéctica de la comprensión y la explicación propuesta por Ricoeur. Aborda lo generacional, las relaciones adulto-joven y lo público, desde algunos aportes de la sociología y la teoría política como los de Mannheim, Martin Criado, Corsten, Arendt, Habermas y Fraser. Así mismo despliega la fundamentación teórica de la narrativa como opción que posibilita el acercamiento a los significados de un grupo de jóvenes universitarios. La categoría relaciones adulto-joven muestra, más que encuentros, desencuentros entre ambas generaciones, caracterizados por un control al que los jóvenes reaccionan con una subordinación pasiva, o con un afrontamiento manipulador. Lo público se caracteriza por una tensión constante, entre fuerzas instituidas en los ámbitos familiar, educativo y social, que imponen formas de comportamiento, normas y valores que conforman un orden establecido, y las posibilidades de cambio que se van fraguando y que generan movimiento frente a lo instituido. En medio de esta coexistencia de fuerzas que conviven y se contraponen, aparecen los jóvenes dando prioridad al “sí mismo”, a lo subjetivo sobre lo colectivo, en una urgente búsqueda de autodeterminación como un reclamo directo por su reconocimiento en un ámbito de lo público que los relega a la periferia.

Use of the buble rise model in the simulation of the pressurizer in ALMOD 3 computer code

International Nuclear Information System (INIS)

Madeira, A.A.; Camargo, C.T.M.

1984-01-01

The implementation of the buble rise model in the ALMOD 3 computer code to simulate the pressurizer of a nuclear power plant is presented. Some transients for Angra I were calculated and results obtained from the original and modified models were compared. (E.G.) [pt

Efecto de diferentes densidades poblacionales de <i>Meloidogyne haplai> sobre uchuva (<i>Physalis peruvianai> L. en invernadero

Directory of Open Access Journals (Sweden)

Niño Nancy Eunice

2008-04-01

Full Text Available <p align="justify">Este estudio se realizó en el Centro de Investigaciones y Asesorías Agroindustriales de la Universidad de Bogotá Jorge Tadeo Lozano, Chía (Cundinamarca, bajo condiciones de invernadero, durante diez meses de cultivo. Se evaluó el efecto de diferentes densidades poblacionales de <i>Meloidogyne haplai> (0, 50, 100, 200, 500 y 1.000 larvas J2/100 cc de suelo, sobre parámetros productivos de la uchuva: altura de las plantas, diámetro de tallo, peso fresco, peso seco y biomasa de follaje, peso fresco de raíces, índice de nodulación radicular y peso fresco de frutos. Se hizo análisis de varianza, pruebas de contrastes y prueba de Tukey (α=0,05, en un diseño completamente aleatorio, con seis tratamientos y cinco repeticiones, mediante el programa SAS v.8.0. El tratamiento de 500 larvas J2/100 cc suelo fue el que más afectó la altura de las plantas, el diámetro del tallo, la biomasa de follaje, el peso fresco de raíces y presentó el índice de nodulación radical más alto. No se encontraron diferencias significativas entre los tratamientos inoculados con <i>M. haplai> , para peso fresco, peso seco de follaje y peso fresco de frutos, ni para el número de larvas J2 en suelo y masas de huevos. Mediante la ecuación: Y = m + (1–mZ^P-T propuesta por Seinhorst (1965, se estableció un límite de tolerancia de 50 larvas J2 de <i>M. haplai> /100 cc suelo, para peso fresco de raíces y un límite de tolerancia de 450 larvas J2 de <i>M. haplai> /100 cc suelo, para biomasa de follaje. p>

Optical properties of BaO added bioactive Na2O-CaO-P2O5 glasses

Science.gov (United States)

Edathazhe, Akhila B.; Shashikala, H. D.

2018-04-01

This paper deals with the effect of BaO addition on the optical properties of bioactive Na2O-CaO-P2O5 glasses for biomedical optics applications. The phosphate glasses with composition (26-x)Na2O-xBaO-29CaO-45P2O5 (x = 0, 5, 10, 15 mol%) have been prepared by melt-quenching technique at 1100°C. The refractive index of glasses increased with BaO content. The optical band gap and Urbach energy of synthesized glasses were derived from the optical absorption spectra by using UV-Visible spectrometer. The addition of 5 mol% of BaO increased the band gap energy of glasses due to the formation of ionic cross-links in the glass structure. The defect and interstitial bonds formation in theglasses decreased with BaO additions as indicated by reductions in the Urbach energy values. No such variations in the band gap and Urbach energy values of glasses were observed with BaO content from 5 to 15 mol%. The molar and oxide ion polarizability values were calculated from the band gap and molar volume of glasses. The increase in the calculated optical basicity and metallization criteria of glasses supported the rise in band gap energy values with BaO additions. As the melting temperature of glasses decreased from 1200 to 1100°C, the refractive index increased as supported by the measured density values. The band gap energy is not changed with melting temperature. The Urbach energy decreased with decrease in melting temperature in case of BaO-free Na2O-CaO-P2O5 glasses, whereas it increased in case of BaO added glasses due to the role of BaO as modifying oxide.

J.C. Christensen

DEFF Research Database (Denmark)

Duedahl, Poul

I mange år var det en almindelig antagelse, at statsminister J.C. Christensens dagbøger var blevet brændt efter hans død. Nu er hans dagbøger fra årene 1900-09 imidlertid dukket op, og de giver et indblik i dansk politik i årene omkring Systemskiftet. Dagbøgerne dækker den periode, hvor J.C...... af justitsminister P.A. Albertis bedragerier og optakten til en rigsretssag. De tyve små dagbøger indeholder optegnelser om stort og småt fra perioden. De tjente som et sted, hvor den normalt tillukkede J.C. Christensen fik luft for private og ikke mindst politiske bekymringer, og mange af aktørerne...... i det politiske liv blev i dagbøgerne udsat for skarpe bemærkninger. J.C. Christensens dagbøger giver et enestående indblik i et stykke Danmarkshistorie set fra første række....

Interface Evolution During Transient Pressure Solution Creep

Science.gov (United States)

Dysthe, D. K.; Podladchikov, Y. Y.; Renard, F.; Jamtveit, B.; Feder, J.

When aggregates of small grains are pressed together in the presence of small amounts of solvent the aggregate compacts and the grains tend to stick together. This hap- pens to salt and sugar in humid air, and to sediments when buried in the Earths crust. Stress concentration at the grain contacts cause local dissolution, diffusion of the dissolved material out of the interface and deposition on the less stressed faces of the grains{1}. This process, in geology known as pressure solution, plays a cen- tral role during compaction of sedimentary basins{1,2}, during tectonic deformation of the Earth's crust{3}, and in strengthening of active fault gouges following earth- quakes{4,5}. Experimental data on pressure solution has so far not been sufficiently accurate to understand the transient processes at the grain scale. Here we present ex- perimental evidence that pressure solution creep does not establish a steady state inter- face microstructure as previously thought. Conversely, cumulative creep strain and the characteristic size of interface microstructures grow as the cubic root of time. A sim- ilar transient phenomenon is known in metallurgy (Andrade creep) and is explained here using an analogy with spinodal dewetting. 1 Weyl, P. K., Pressure solution and the force of crystallization - a phenomenological theory. J. Geophys. Res., 64, 2001-2025 (1959). 2 Heald, M. T., Cementation of Simpson and St. Peter Sandstones in parts of Okla- homa, Arkansas and Missouri, J. Geol. Chicago, 14, 16-30 (1956). 3 Schwartz, S., Stöckert, B., Pressure solution in siliciclastic HP-LT metamorphic rocks constraints on the state of stress in deep levels of accretionary complexes. Tectonophysics, 255, 203-209 (1996). 4 Renard, F., Gratier, J.P., Jamtveit, B., Kinetics of crack-sealing, intergranular pres- sure solution, and compaction around active faults. J. Struct. Geol., 22, 1395-1407, (2000). 5 Miller, S. A., BenZion, Y., Burg, J. P.,A three-dimensional fluid-controlled earth

Observation of the $\\Lambda_b^0 \\rightarrow J/\\psi p \\pi^-$ decay

CERN Document Server

Aaij, Roel; Adinolfi, Marco; Affolder, Anthony; Ajaltouni, Ziad; Akar, Simon; Albrecht, Johannes; Alessio, Federico; Alexander, Michael; Ali, Suvayu; Alkhazov, Georgy; Alvarez Cartelle, Paula; Alves Jr, Antonio; Amato, Sandra; Amerio, Silvia; Amhis, Yasmine; An, Liupan; Anderlini, Lucio; Anderson, Jonathan; Andreassen, Rolf; Andreotti, Mirco; Andrews, Jason; Appleby, Robert; Aquines Gutierrez, Osvaldo; Archilli, Flavio; Artamonov, Alexander; Artuso, Marina; Aslanides, Elie; Auriemma, Giulio; Baalouch, Marouen; Băbeanu, Alexandru-Ionut; Bachmann, Sebastian; Back, John; Badalov, Alexey; Balagura, Vladislav; Baldini, Wander; Barlow, Roger; Barschel, Colin; Barsuk, Sergey; Barter, William; Batozskaya, Varvara; Battista, Vincenzo; Bay, Aurelio; Beaucourt, Leo; Beddow, John; Bedeschi, Franco; Bediaga, Ignacio; Belogurov, Sergey; Belous, Konstantin; Belyaev, Ivan; Ben-Haim, Eli; Bencivenni, Giovanni; Benson, Sean; Benton, Jack; Berezhnoy, Alexander; Bernet, Roland; Bettler, Marc-Olivier; van Beuzekom, Martinus; Bien, Alexander; Bifani, Simone; Bird, Thomas; Bizzeti, Andrea; Bjørnstad, Pål Marius; Blake, Thomas; Blanc, Frédéric; Blouw, Johan; Blusk, Steven; Bocci, Valerio; Bondar, Alexander; Bondar, Nikolay; Bonivento, Walter; Borghi, Silvia; Borgia, Alessandra; Borsato, Martino; Bowcock, Themistocles; Bowen, Espen Eie; Bozzi, Concezio; Brambach, Tobias; van den Brand, Johannes; Bressieux, Joël; Brett, David; Britsch, Markward; Britton, Thomas; Brodzicka, Jolanta; Brook, Nicholas; Brown, Henry; Bursche, Albert; Busetto, Giovanni; Buytaert, Jan; Cadeddu, Sandro; Calabrese, Roberto; Calvi, Marta; Calvo Gomez, Miriam; Camboni, Alessandro; Campana, Pierluigi; Campora Perez, Daniel; Carbone, Angelo; Carboni, Giovanni; Cardinale, Roberta; Cardini, Alessandro; Carranza-Mejia, Hector; Carson, Laurence; Carvalho Akiba, Kazuyoshi; Casse, Gianluigi; Cassina, Lorenzo; Castillo Garcia, Lucia; Cattaneo, Marco; Cauet, Christophe; Cenci, Riccardo; Charles, Matthew; Charpentier, Philippe; Chen, Shanzhen; Cheung, Shu-Faye; Chiapolini, Nicola; Chrzaszcz, Marcin; Ciba, Krzystof; Cid Vidal, Xabier; Ciezarek, Gregory; Clarke, Peter; Clemencic, Marco; Cliff, Harry; Closier, Joel; Coco, Victor; Cogan, Julien; Cogneras, Eric; Collins, Paula; Comerma-Montells, Albert; Contu, Andrea; Cook, Andrew; Coombes, Matthew; Coquereau, Samuel; Corti, Gloria; Corvo, Marco; Counts, Ian; Couturier, Benjamin; Cowan, Greig; Craik, Daniel Charles; Cruz Torres, Melissa Maria; Cunliffe, Samuel; Currie, Robert; D'Ambrosio, Carmelo; Dalseno, Jeremy; David, Pascal; David, Pieter; Davis, Adam; De Bruyn, Kristof; De Capua, Stefano; De Cian, Michel; De Miranda, Jussara; De Paula, Leandro; De Silva, Weeraddana; De Simone, Patrizia; Decamp, Daniel; Deckenhoff, Mirko; Del Buono, Luigi; Déléage, Nicolas; Derkach, Denis; Deschamps, Olivier; Dettori, Francesco; Di Canto, Angelo; Dijkstra, Hans; Donleavy, Stephanie; Dordei, Francesca; Dorigo, Mirco; Dosil Suárez, Alvaro; Dossett, David; Dovbnya, Anatoliy; Dreimanis, Karlis; Dujany, Giulio; Dupertuis, Frederic; Durante, Paolo; Dzhelyadin, Rustem; Dziurda, Agnieszka; Dzyuba, Alexey; Easo, Sajan; Egede, Ulrik; Egorychev, Victor; Eidelman, Semen; Eisenhardt, Stephan; Eitschberger, Ulrich; Ekelhof, Robert; Eklund, Lars; El Rifai, Ibrahim; Elsasser, Christian; Ely, Scott; Esen, Sevda; Evans, Hannah Mary; Evans, Timothy; Falabella, Antonio; Färber, Christian; Farinelli, Chiara; Farley, Nathanael; Farry, Stephen; Fay, Robert; Ferguson, Dianne; Fernandez Albor, Victor; Ferreira Rodrigues, Fernando; Ferro-Luzzi, Massimiliano; Filippov, Sergey; Fiore, Marco; Fiorini, Massimiliano; Firlej, Miroslaw; Fitzpatrick, Conor; Fiutowski, Tomasz; Fontana, Marianna; Fontanelli, Flavio; Forty, Roger; Francisco, Oscar; Frank, Markus; Frei, Christoph; Frosini, Maddalena; Fu, Jinlin; Furfaro, Emiliano; Gallas Torreira, Abraham; Galli, Domenico; Gallorini, Stefano; Gambetta, Silvia; Gandelman, Miriam; Gandini, Paolo; Gao, Yuanning; Garofoli, Justin; Garra Tico, Jordi; Garrido, Lluis; Gaspar, Clara; Gauld, Rhorry; Gavardi, Laura; Gavrilov, Gennadii; Gersabeck, Evelina; Gersabeck, Marco; Gershon, Timothy; Ghez, Philippe; Gianelle, Alessio; Giani', Sebastiana; Gibson, Valerie; Giubega, Lavinia-Helena; Gligorov, V.V.; Göbel, Carla; Golubkov, Dmitry; Golutvin, Andrey; Gomes, Alvaro; Gordon, Hamish; Gotti, Claudio; Grabalosa Gándara, Marc; Graciani Diaz, Ricardo; Granado Cardoso, Luis Alberto; Graugés, Eugeni; Graziani, Giacomo; Grecu, Alexandru; Greening, Edward; Gregson, Sam; Griffith, Peter; Grillo, Lucia; Grünberg, Oliver; Gui, Bin; Gushchin, Evgeny; Guz, Yury; Gys, Thierry; Hadjivasiliou, Christos; Haefeli, Guido; Haen, Christophe; Haines, Susan; Hall, Samuel; Hamilton, Brian; Hampson, Thomas; Han, Xiaoxue; Hansmann-Menzemer, Stephanie; Harnew, Neville; Harnew, Samuel; Harrison, Jonathan; Hartmann, Thomas; He, Jibo; Head, Timothy; Heijne, Veerle; Hennessy, Karol; Henrard, Pierre; Henry, Louis; Hernando Morata, Jose Angel; van Herwijnen, Eric; Heß, Miriam; Hicheur, Adlène; Hill, Donal; Hoballah, Mostafa; Hombach, Christoph; Hulsbergen, Wouter; Hunt, Philip; Hussain, Nazim; Hutchcroft, David; Hynds, Daniel; Idzik, Marek; Ilten, Philip; Jacobsson, Richard; Jaeger, Andreas; Jalocha, Pawel; Jans, Eddy; Jaton, Pierre; Jawahery, Abolhassan; Jing, Fanfan; John, Malcolm; Johnson, Daniel; Jones, Christopher; Joram, Christian; Jost, Beat; Jurik, Nathan; Kaballo, Michael; Kandybei, Sergii; Kanso, Walaa; Karacson, Matthias; Karbach, Moritz; Karodia, Sarah; Kelsey, Matthew; Kenyon, Ian; Ketel, Tjeerd; Khanji, Basem; Khurewathanakul, Chitsanu; Klaver, Suzanne; Kochebina, Olga; Kolpin, Michael; Komarov, Ilya; Koopman, Rose; Koppenburg, Patrick; Korolev, Mikhail; Kozlinskiy, Alexandr; Kravchuk, Leonid; Kreplin, Katharina; Kreps, Michal; Krocker, Georg; Krokovny, Pavel; Kruse, Florian; Kucewicz, Wojciech; Kucharczyk, Marcin; Kudryavtsev, Vasily; Kurek, Krzysztof; Kvaratskheliya, Tengiz; La Thi, Viet Nga; Lacarrere, Daniel; Lafferty, George; Lai, Adriano; Lambert, Dean; Lambert, Robert W; Lanciotti, Elisa; Lanfranchi, Gaia; Langenbruch, Christoph; Langhans, Benedikt; Latham, Thomas; Lazzeroni, Cristina; Le Gac, Renaud; van Leerdam, Jeroen; Lees, Jean-Pierre; Lefèvre, Regis; Leflat, Alexander; Lefrançois, Jacques; Leo, Sabato; Leroy, Olivier; Lesiak, Tadeusz; Leverington, Blake; Li, Yiming; Liles, Myfanwy; Lindner, Rolf; Linn, Christian; Lionetto, Federica; Liu, Bo; Liu, Guoming; Lohn, Stefan; Longstaff, Iain; Lopes, Jose; Lopez-March, Neus; Lowdon, Peter; Lu, Haiting; Lucchesi, Donatella; Luo, Haofei; Lupato, Anna; Luppi, Eleonora; Lupton, Oliver; Machefert, Frederic; Machikhiliyan, Irina V; Maciuc, Florin; Maev, Oleg; Malde, Sneha; Manca, Giulia; Mancinelli, Giampiero; Maratas, Jan; Marchand, Jean François; Marconi, Umberto; Marin Benito, Carla; Marino, Pietro; Märki, Raphael; Marks, Jörg; Martellotti, Giuseppe; Martens, Aurelien; Martín Sánchez, Alexandra; Martinelli, Maurizio; Martinez Santos, Diego; Martinez Vidal, Fernando; Martins Tostes, Danielle; Massafferri, André; Matev, Rosen; Mathe, Zoltan; Matteuzzi, Clara; Mazurov, Alexander; McCann, Michael; McCarthy, James; McNab, Andrew; McNulty, Ronan; McSkelly, Ben; Meadows, Brian; Meier, Frank; Meissner, Marco; Merk, Marcel; Milanes, Diego Alejandro; Minard, Marie-Noelle; Moggi, Niccolò; Molina Rodriguez, Josue; Monteil, Stephane; Morandin, Mauro; Morawski, Piotr; Mordà, Alessandro; Morello, Michael Joseph; Moron, Jakub; Morris, Adam Benjamin; Mountain, Raymond; Muheim, Franz; Müller, Katharina; Muresan, Raluca; Mussini, Manuel; Muster, Bastien; Naik, Paras; Nakada, Tatsuya; Nandakumar, Raja; Nasteva, Irina; Needham, Matthew; Neri, Nicola; Neubert, Sebastian; Neufeld, Niko; Neuner, Max; Nguyen, Anh Duc; Nguyen, Thi-Dung; Nguyen-Mau, Chung; Nicol, Michelle; Niess, Valentin; Niet, Ramon; Nikitin, Nikolay; Nikodem, Thomas; Novoselov, Alexey; O'Hanlon, Daniel Patrick; Oblakowska-Mucha, Agnieszka; Obraztsov, Vladimir; Oggero, Serena; Ogilvy, Stephen; Okhrimenko, Oleksandr; Oldeman, Rudolf; Onderwater, Gerco; Orlandea, Marius; Otalora Goicochea, Juan Martin; Owen, Patrick; Oyanguren, Maria Arantza; Pal, Bilas Kanti; Palano, Antimo; Palombo, Fernando; Palutan, Matteo; Panman, Jacob; Papanestis, Antonios; Pappagallo, Marco; Parkes, Christopher; Parkinson, Christopher John; Passaleva, Giovanni; Patel, Girish; Patel, Mitesh; Patrignani, Claudia; Pazos Alvarez, Antonio; Pearce, Alex; Pellegrino, Antonio; Pepe Altarelli, Monica; Perazzini, Stefano; Perez Trigo, Eliseo; Perret, Pascal; Perrin-Terrin, Mathieu; Pescatore, Luca; Pesen, Erhan; Petridis, Konstantin; Petrolini, Alessandro; Picatoste Olloqui, Eduardo; Pietrzyk, Boleslaw; Pilař, Tomas; Pinci, Davide; Pistone, Alessandro; Playfer, Stephen; Plo Casasus, Maximo; Polci, Francesco; Poluektov, Anton; Polycarpo, Erica; Popov, Alexander; Popov, Dmitry; Popovici, Bogdan; Potterat, Cédric; Price, Eugenia; Prisciandaro, Jessica; Pritchard, Adrian; Prouve, Claire; Pugatch, Valery; Puig Navarro, Albert; Punzi, Giovanni; Qian, Wenbin; Rachwal, Bartolomiej; Rademacker, Jonas; Rakotomiaramanana, Barinjaka; 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Schune, Marie Helene; Schwemmer, Rainer; Sciascia, Barbara; Sciubba, Adalberto; Seco, Marcos; Semennikov, Alexander; Sepp, Indrek; Serra, Nicola; Serrano, Justine; Sestini, Lorenzo; Seyfert, Paul; Shapkin, Mikhail; Shapoval, Illya; Shcheglov, Yury; Shears, Tara; Shekhtman, Lev; Shevchenko, Vladimir; Shires, Alexander; Silva Coutinho, Rafael; Simi, Gabriele; Sirendi, Marek; Skidmore, Nicola; Skwarnicki, Tomasz; Smith, Anthony; Smith, Edmund; Smith, Eluned; Smith, Jackson; Smith, Mark; Snoek, Hella; Sokoloff, Michael; Soler, Paul; Soomro, Fatima; Souza, Daniel; Souza De Paula, Bruno; Spaan, Bernhard; Sparkes, Ailsa; Spradlin, Patrick; Stagni, Federico; Stahl, Marian; Stahl, Sascha; Steinkamp, Olaf; Stenyakin, Oleg; Stevenson, Scott; Stoica, Sabin; Stone, Sheldon; Storaci, Barbara; Stracka, Simone; Straticiuc, Mihai; Straumann, Ulrich; Stroili, Roberto; Subbiah, Vijay Kartik; Sun, Liang; Sutcliffe, William; Swientek, Krzysztof; Swientek, Stefan; Syropoulos, Vasileios; Szczekowski, Marek; Szczypka, Paul; Szilard, Daniela; Szumlak, Tomasz; T'Jampens, Stephane; Teklishyn, Maksym; Tellarini, Giulia; Teubert, Frederic; Thomas, Christopher; Thomas, Eric; van Tilburg, Jeroen; Tisserand, Vincent; Tobin, Mark; Tolk, Siim; Tomassetti, Luca; Tonelli, Diego; Topp-Joergensen, Stig; Torr, Nicholas; Tournefier, Edwige; Tourneur, Stephane; Tran, Minh Tâm; Tresch, Marco; Tsaregorodtsev, Andrei; Tsopelas, Panagiotis; Tuning, Niels; Ubeda Garcia, Mario; Ukleja, Artur; Ustyuzhanin, Andrey; Uwer, Ulrich; Vagnoni, Vincenzo; Valenti, Giovanni; Vallier, Alexis; Vazquez Gomez, Ricardo; Vazquez Regueiro, Pablo; Vázquez Sierra, Carlos; Vecchi, Stefania; Velthuis, Jaap; Veltri, Michele; Veneziano, Giovanni; Vesterinen, Mika; Viaud, Benoit; Vieira, Daniel; Vieites Diaz, Maria; Vilasis-Cardona, Xavier; Vollhardt, Achim; Volyanskyy, Dmytro; Voong, David; Vorobyev, Alexey; Vorobyev, Vitaly; Voß, Christian; Voss, Helge; de Vries, Jacco; Waldi, Roland; Wallace, Charlotte; Wallace, Ronan; Walsh, John; Wandernoth, Sebastian; Wang, Jianchun; Ward, David; Watson, Nigel; Websdale, David; Whitehead, Mark; Wicht, Jean; Wiedner, Dirk; Wilkinson, Guy; Williams, Matthew; Williams, Mike; Wilson, Fergus; Wimberley, Jack; Wishahi, Julian; Wislicki, Wojciech; Witek, Mariusz; Wormser, Guy; Wotton, Stephen; Wright, Simon; Wu, Suzhi; Wyllie, Kenneth; Xie, Yuehong; Xing, Zhou; Xu, Zhirui; Yang, Zhenwei; Yuan, Xuhao; Yushchenko, Oleg; Zangoli, Maria; Zavertyaev, Mikhail; Zhang, Liming; Zhang, Wen Chao; Zhang, Yanxi; Zhelezov, Alexey; Zhokhov, Anatoly; Zhong, Liang; Zvyagin, Alexander

2014-01-01

The first observation of the Cabibbo-suppressed decay $\\Lambda_b^0\\rightarrow J/\\psi p \\pi^-$ is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 $\\rm fb^{-1}$. A prominent signal is observed and the branching fraction relative to the decay mode $\\Lambda_b^0\\rightarrow J/\\psi p K^-$ is determined to be $$ \\frac{{\\cal B}(\\Lambda_b^0\\rightarrow J/\\psi p \\pi^-)}{{\\cal B}(\\Lambda_b^0\\rightarrow J/\\psi p K^-)}=0.0824\\pm0.0025\\:(\\text{stat})\\pm0.0042\\:(\\text{syst}). $$ A search for direct CP violation is performed. The difference in the CP asymmetries between these two decays is found to be $$ {\\cal A}_{CP}(\\Lambda_b^0\\rightarrow J/\\psi p \\pi^-)-{\\cal A}_{CP}(\\Lambda_b^0\\rightarrow J/\\psi p K^-)=(+5.7\\pm 2.3\\:(\\text{stat})\\pm1.2\\:(\\text{syst}))\\%, $$ which is compatible with CP symmetry at the $2.2\\sigma$ level.

Qualidade no serviço público - um estudo de caso

OpenAIRE

Rutkowski,Jacqueline

1998-01-01

O objetivo do trabalho é discutir a questão da eficiência em organizações do setor público. Identificando-se a ineficiência com as dificuldades na gestão desses órgãos, analisou-se duas estratégias metodológicas atualmente utilizadas na gerência de instituições públicas no Brasil. A primeira delas, a Qualidade Total (QT), metodologia já bastante difundida em nosso país. Foi pesquisado também o Planejamento Estratégico Situacional (PES), estratégia metodológica desenvolvida, a partir de fins d...

Δ8-Tetrahydrocannabinol induces cytotoxicity in macrophage J774-1 cells: Involvement of cannabinoid receptor 2 and p38 MAPK

International Nuclear Information System (INIS)

Yamaori, Satoshi; Ishii, Hirosuke; Chiba, Kenzo; Yamamoto, Ikuo; Watanabe, Kazuhito

2013-01-01

Tetrahydrocannabinol (THC), a psychoactive component of marijuana, is known to exert cytotoxicity in immune cells. In the present study, we examined the cytotoxicity of Δ 8 -THC in mouse macrophage J774-1 cells and a possible involvement of cannabinoid receptors and stress-responsive mitogen-activated protein kinases (MAPKs) in the cytotoxic process. J774-1 cells were treated with Δ 8 -THC (0–20 μM) for up to 6 h. As measured by the MTT and LDH assays, Δ 8 -THC induced cell death of J774-1 cells in a concentration- and/or exposure time-dependent manner. Δ 8 -THC-induced cell damage was associated with vacuole formation, cell swelling, chromatin condensation, and nuclear fragmentation. The cytotoxic effect of Δ 8 -THC was significantly prevented by a caspase-1 inhibitor Ac-YVAD-cmk but not a caspase-3 inhibitor z-DEVD-fmk. The pretreatment with SR144528, a CB 2 receptor-selective antagonist, effectively suppressed Δ 8 -THC-induced cytotoxicity in J774-1 cells, which exclusively expressed CB 2 receptors as indicated by real-time polymerase chain reaction analysis. In contrast, AM251, a CB 1 receptor-selective antagonist, did not affect the cytotoxicity. Pertussis toxin and α-tocopherol significantly attenuated Δ 8 -THC-induced cytotoxicity suggesting that G i/o protein coupling signal transduction and oxidative stress are responsible for the cytotoxicity. Δ 8 -THC stimulated the phosphorylation of p38 MAPK and c-Jun N-terminal kinase (JNK) in J774-1 cells, which were effectively antagonized by the pretreatment with SR144528. In addition, SB203580, a p38 MARK inhibitor, significantly attenuated the cytotoxic effect of Δ 8 -THC, whereas SP600125, a JNK inhibitor, significantly enhanced the cytotoxicity. These results suggest that the cytotoxicity of Δ 8 -THC to J774-1 cells is exerted mediated through the CB 2 receptor followed by the activation of p38 MAPK

van den Heuvel, Prof. Edward P J

Indian Academy of Sciences (India)

van den Heuvel, Prof. Edward P J . Date of birth: 2 November 1940. Address: Professor of Astrophysics, Astronomical Inst. Anton Pannekoek, Postbus 94249, 1090 GE Amsterdam, The Netherlands Contact: Office: (+31-20) 525 ...

Role of Transient Mobility on Submonolayer Island Growth: Extensions and Testing

Science.gov (United States)

Morales Cifuentes, Josue; Einstein, Theodore; Pimpinelli, Alberto

In studies of epitaxial growth a major goal is assessing the smallest stable cluster (i + 1 monomers, with i the critical nucleus size), by analyzing the capture zone distribution (CZD) or the scaling of incident flux F to the density of stable islands N (N ~Fα , with α the growth exponent). As noted in the previous talk, the GWD has well described the data in several experiments, including submonolayer para-hexaphenyl (6P) on amorphous mica (i ~ 3). Different scaling (Fα) for 6P at (small) large F is attributed to (DLA) ALA dynamics, i.e. i = (5) 7 +/- 2. Our recent theoretical work considered monomers propagating ballistically before thermalizing or attaching to islands, leading to scaling, non-monotonic crossover, and activation energies that account for the data and reconciling the values of i. We present applications to other experimental systems: 6P on SiO2 and pentacene (5A) on amorphous mica. We describe useful simplifying approximations, and preliminary kinetic Monte Carlo simulations including transient effects on growth. Work at UMD supported by NSF CHE 13-05892.

A polynomial algorithm for $P | p_j = 1, r_j, outtree | \\Sigma C_j$ and $P | p_j = 1,r_j, outtree, pmtn | \\Sigma C_j$

NARCIS (Netherlands)

Brucker, Peter; Hurink, Johann L.; Knust, Sigrid

2001-01-01

A polynomial algorithm is proposed for two scheduling problems for which the complexity status was open. A set of jobs with unit processing times, release dates and outtree precedence relations has to be processed on parallel identical machines such that the total completion time $\\sum C_j$ is

Tšehhi presidendi valimisel jäi puudu üksainus hääl / Krister Paris

Index Scriptorium Estoniae

Paris, Krister, 1977-

2008-01-01

Tšehhi presidendivalimistel sai parlamendis suurima toetuse ametis olev riigipea Vaclav Klaus, kuid ka temal jäi puudu üks hääl, et pälvida kahe koja ühisistungil enamus. Vt. samas: Salatehingud kommunistidega

Transverse momentum dependence of the J/Ψ in the p-U, 16O-U and 32S-U interactions at 200 GeV/c per nucleon

International Nuclear Information System (INIS)

Drapier, O.

1990-05-01

We study in this thesis the transverse momentum dependence of dimuons produced with mass greated than 1.7 GeV/c 2 in p-U, 16 O-U and 32 S-U collisions at 200 GeV per nucleon. The NA38 experiment, performed at the CERN SPS, measures muon pairs produced in these collisions using the NA10 spectrometer. The neutral transverse energy, which is related to the centrality of the interaction, is deduced from the energy flow measured in an electromagnetic calorimeter located downstream an active target. Data are analysed with a method taking into account apparatus effects which are simulated through transfer matrices. The 16 O-U and 32 S-U results show that the T > and T 2 > values of J/Ψ dimuons increase with the measured neutral transverse energy and that such a correlation is not seen for the mass continuum dimuons. A comparison of these results with different models is presented. Results are first compared with quark-gluon plasma models which inhibits J/Ψ formation via a color screening effect. Models based on J/Ψ absorption in a dense hadron gas combined with parton multiple scattering in the entrance channel are also considered. Experimental data do not allow to distinguish between these different models [fr

Rapidity dependence of the inclusive J/ψ production in p bar p collisions at √s = 1.8 TeV

International Nuclear Information System (INIS)

1996-08-01

We have studied the J/ψ production in p anti p collisions at √s = 1.8 TeV with the D null detector at the Fermilab Tevatron, using a μ + μ - data sample collected during the 1994-95 running period. We have measured the inclusive J/ψ production cross section as a function of the J/ψ transverse momentum, P T J/ψ in the central and forward rapidity regions. The new measurement of the cross section dσ/dp T J/ψ for |η J/ψ | T J/ψ for 2.5 J/ψ | T J/ψ range from 1 to 16 GeV/c. We combine the measurements in several |η J/ψ | regions to discuss dσ/dη J/ψ for p T J/ψ > 8 GeV/c. The data are compared with the next-to- leading order (NLO) QCD calculations, which take into account different J/ψ production mechanisms

A novel dual-wavelength laser stimulator to elicit transient and tonic nociceptive stimulation.

Science.gov (United States)

Dong, Xiaoxi; Liu, Tianjun; Wang, Han; Yang, Jichun; Chen, Zhuying; Hu, Yong; Li, Yingxin

2017-07-01

This study aimed to develop a new laser stimulator to elicit both transient and sustained heat stimulation with a dual-wavelength laser system as a tool for the investigation of both transient and tonic experimental models of pain. The laser stimulator used a 980-nm pulsed laser to generate transient heat stimulation and a 1940-nm continuous-wave (CW) laser to provide sustained heat stimulation. The laser with 980-nm wavelength can elicit transient pain with less thermal injury, while the 1940-nm CW laser can effectively stimulate both superficial and deep nociceptors to elicit tonic pain. A proportional integral-derivative (PID) temperature feedback control system was implemented to ensure constancy of temperature during heat stimulation. The performance of this stimulator was evaluated by in vitro and in vivo animal experiments. In vitro experiments on totally 120 specimens fresh pig skin included transient heat stimulation by 980-nm laser (1.5 J, 10 ms), sustained heat stimulation by 1940-nm laser (50-55 °C temperature control mode or 1.5 W, 5 min continuous power supply), and the combination of transient/sustained heat stimulation by dual lasers (1.5 J, 10 ms, 980-nm pulse laser, and 1940-nm laser with 50-55 °C temperature control mode). Hemoglobin brushing and wind-cooling methods were tested to find better stimulation model. A classic tail-flick latency (TFL) experiment with 20 Wistar rats was used to evaluate the in vivo efficacy of transient and tonic pain stimulation with 15 J, 100 ms 980-nm single laser pulse, and 1.5 W constant 1940-nm laser power. Ideal stimulation parameters to generate transient pain were found to be a 26.6 °C peak temperature rise and 0.67 s pain duration. In our model of tonic pain, 5 min of tonic stimulation produced a temperature change of 53.7 ± 1.3 °C with 1.6 ± 0.2% variation. When the transient and tonic stimulation protocols were combined, no significant difference was observed depending on the order

Wpływ cukrzycy na rozwój i funkcjonowanie dziecka

OpenAIRE

Buchnat, Marzena

2006-01-01

Choroba przewlekła, jaką jest cukrzyca, wpływa niekorzystnie na rozwój dziecka, powodując zmianę sposobu życia zarówno dla dziecka jak i jego rodziny. Jest źródłem wielu trudnych sytuacji, ponieważ wpływa na sposób funkcjonowania dziecka na różnych płaszczyznach. Jednak jak dalece choroba będzie zakłócać ten sposób funkcjonowania, zależy nie tylko od samej choroby, ale i od sposobu jej przyjęcia przez dziecko Cukrzyca szczególnie negatywne wpływa na kształtowanie się osobowości. Trzeba ...

Transient solid-liquid He heat transfer and onset of film boiling

International Nuclear Information System (INIS)

Metzger, W.; Huebener, R.P.; Selig, K.P.

1982-01-01

The transient heat transfer between single-crystalline Ge chips and liquid helium is investigated during the application of light pulses with different optical power to the Ge sample. The strong temperature dependence of the electrical conductivity of Ge conveniently serves for monitoring the temporal behaviour of the sample temperature during the input of optical energy. After a certain time interval following the beginning of the light pulse an abrupt rise of the sample temperature is observed. This time interval is much longer than the thermal time constant expected for the sample. This abrupt rise of the sample temperature can be understood in terms of the onset of film boiling. The observed onset time of film boiling and its dependence upon the heat transfer power density agrees reasonably with earlier results by Steward (Int. J. Heat Mass Transfer 21; 863. (1978)). (author)

trans-Carbonylchloridobis(tri-p-tolylphosphinerhodium(I acetone solvate

Directory of Open Access Journals (Sweden)

Brian R. James

2008-03-01

Full Text Available The title compound, [RhCl(C21H21P2(CO]·C3H6O, was precipitated in trace yield from a reaction of RhCl(cod(THP with P(p-tol3 in a 1:1 acetone-d6/CD3OD solution under a hydrogen atmosphere [p-tol = p-tolyl, THP = tris(hydroxymethylphosphine, P(CH2OH3, and cod = 1,5-cyclooctadiene]. The complex displays a square-planar geometry around the RhI atom. The complex molecules and the acetone molecules are linked into a chain along the a axis by intermolecular C—H...Cl and C—H...O hydrogen bonds.

$J/\\psi$ production in pPb collisions from CMS

CERN Document Server

Lee, Songkyo

2016-01-01

We report on the prompt and non prompt J$/\\psi$ meson production from CMS, using 34.6 nb$^{-1}$ of proton-lead (pPb) data recorded in 2013 at 5.02 TeV. The differential production cross sections are analyzed in the transverse momentum range $2<p_{\\rm T}<30$~GeV/$c$, and the center-of-mass (CM) rapidity region $-2.87J/\\psi$ yields at forward (proton-going direction) and backward (Pb-going direction) is studied in several ranges of $p_{\\rm T}$, rapidity, and the event-activity regions.

EFEITOS DO pH, SAL E DESNATURANTES NA HIDRÓLISE IN VITRO DA GLOBULINA PRINCIPAL DE GRÃO-DE-BICO (<i>Cicer arietinumi> L., var. IAC-Marrocos*

Directory of Open Access Journals (Sweden)

V. A. NEVES

2009-03-01

Full Text Available <p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify; mso-layout-grid-align: none;"> As leguminosas caracterizam-se por apresentar alto teor protéico que na sua grande totalidade são globulinas de reserva,e cujas características moleculares influenciam algumas de suas propriedades com destaque para sua hidrólise frente às enzimas digestivas. As frações 7 e 11S, apesar de certa homologia estrutural, surgem como determinantes das propriedades nutritivas e funcionais das globulinas. Nesse trabalho a globulina principal de grão-de-bico (tipo legumina, 11S foi isolada e purificada, verificando-se o efeito da exposição a diferentes fatores na hidrólise in vitro com as enzimas tripsina e quimotripsina. Comparada à caseína, a globulina principal na forma nativa, e na presença de NaCl 0,3 M, mostrou-se menos susceptível à hidrólise pelas enzimas. A exposição a pHs ácidos extremos revela a retirada desse efeito protetor observado com o sal. As maiores alterações ocorreram pela exposição ao pH 1,0, temperatura de 121°C/15 min e presença de NaCl, no entanto ainda inferiores aos obtidos com a caseína e para ambas enzimas. O tratamento alcalino apesar de aumentar a susceptibilidade às enzimas mostrou valores de hidrólise inferiores à caseína. A exposição a diferentes concentrações dos desnaturantes uréia e hidrocloreto de guanidínio revelou que apenas o segundo teve pequeno efeito sobre a hidrólise pelas enzimas e, mesmo assim, em concentração tão alta como 8M. PALAVRAS-CHAVE: Grão-de-bico; <i>Cicer arietinumi> L; globulina principal; hidrólise <i>in vitroi>. p>

Time Domain Radar Laboratory Operating System Development and Transient EM Analysis.

Science.gov (United States)

1981-09-01

2140__ jFOURIERTRANSFORM IOPTI: 2200- 1 1 25 SEPER&~TES TARGET 27001 FROM RAGE NOISE ____ -I )ANTUP 13000- 9UPAEANNA 3080 14PARARETE RS IOPTIM 13100- 19...s% n% Se, 60 0006- U % % 0% 0 %. .... e.o. ..l N CcZ so.\\%00%%.. a e*soW Iso .% Q. % % % % o o. 3 s. em N so 4 c%0% 0% ".%.-o *oomoe.. .eNNL \\.%%0...vm C=f 00 ISO . MOD %/ M mm L. @9 0J0 9 MI o I W . 0w d, .4 U .L =0 OZ U sNoI I wd mom m 5su U 0S as. %% X.., of v-9 ON L2 No o- =9 If =s mi Zo z 4A W

Regulation of rat liver cytochrome P450j, a high affinity N-nitrosodimethylamine demethylase (NDMAD)

International Nuclear Information System (INIS)

Thomas, P.E.; Bandiera, S.; Maines, S.L.; Ryan, D.E.; Levin, W.

1987-01-01

Purified IgG from sera of rabbits immunized with homogeneous P450j was absorbed to produce monospecific anti-P450j. Results using anti-P450j in ELISA show that rat liver microsomal P450j content decreases between 3 and 6 wks of age in both sexes. Several xenobiotics (Aroclor 1254, mirex and 3-methylcholanthrene) repressed P450j levels when administered to male rats. In contrast, hepatic levels of P450j were induced by isoniazid, dimethylsulfoxide, pyrazole, 4-methylpyrazole, ethanol and chemically-induced diabetes. P450j levels were measurable in kidney, whereas this isozyme was barely detectable in lung, ovaries and testes; however, extra-hepatic P450j was inducible by isoniazid. Between 80-90% of microsomal NDMAD was inhibited by anti-P450j whether the microsomes were isolated from untreated rats or animals administered inducers or repressors of P450j. Results obtained with the reconstituted system suggest that the remaining microsomal NDMAD resistant to antibody inhibition is the result of the inaccessibility of a certain proportion of P450j due to interference by NADPH-P450 reductase. P450j content and NDMAD activity correlated well in microsomes from rats of all treatment groups. The evidence indicates that P450j is the primary, and possibly only, microsomal catalyst of NDMAD at substrate concentrations relevant to hepatocarcinogenesis induced by NDMA

Rapidity dependence of the inclusive J/Ψ production in p bar p collisions at √s = 1.8 TeV

International Nuclear Information System (INIS)

Abachi, S.

1995-11-01

We have studied J/ψ production in p bar p collisions at √s = 1.8 TeV with the D0 detector at Fermilab, using a μ + μ - data sample collected during the 1994--1995 collider run. We have measured the inclusive J/ψ production cross section as a function of the J/ψ transverse momentum, p T J/ψ , in the central and forward rapidity regions. The cross section dσ/dp T J/ψ for |η J/ψ | T J/ψ range from 8 to 20 GeV/c. The new measurements are in a good agreement with the CDF and earlier D0 results. The cross section dσ/dp T J/ψ for 2.6 J/ψ | T J/ψ range from 3 to 12 GeV/c. We combine the measurements in the two |η J/ψ | regions to calculate dσ/dη J/ψ for p T J/ψ > 8 GeV/c. The data are compared with the next-to-leading (NLO) QCD calculations, which take into account different J/ψ production mechanisms

The PARET code and the analysis of the SPERT I transients

Energy Technology Data Exchange (ETDEWEB)

Woodruff, William L [Argonne National Laboratory, Argonne (United States)

1983-09-01

The PARET code has been adapted for the testing of methods and models and for subsequent use in the analysis of transient behavior in research reactors. Comparisons with the experimental results from the SPERT-I transients are provided. The code has also been applied to the analysis of the IAEA 10 MW benchmark cores for protected and unprotected transients. The PARET code was originally developed for the analysis of the SPERT-III experiments for temperatures and pressures typical of power reactors. This code has now been modified to include a selection of flow instability, departure from nucleate boiling (DNB), single and two-phase heat transfer correlations, and a properties library considered more applicable to the low pressures, temperatures, and flow rates encountered in research reactors. The PARET code provides a coupled thermal, hydraulic, and point kinetics capability with continuous reactivity feedback, and an optional voiding model which estimates the voiding produced by subcooled boiling. The present version of the PARET code provides a convenient means of assessing the various models and correlations proposed for use in the analysis of research reactor behavior. For comparison with experiments the SPERT-I cores B-24/32, B-12/64, and D-12/25 were chosen. The B-24/32 core is similar in design to many plate type research reactors in current operation, and the D-12/25 core is of interest because the test included both nondestructive and destructive transients.

The PARET code and the analysis of the SPERT I transients

International Nuclear Information System (INIS)

Woodruff, William L.

1983-01-01

The PARET code has been adapted for the testing of methods and models and for subsequent use in the analysis of transient behavior in research reactors. Comparisons with the experimental results from the SPERT-I transients are provided. The code has also been applied to the analysis of the IAEA 10 MW benchmark cores for protected and unprotected transients. The PARET code was originally developed for the analysis of the SPERT-III experiments for temperatures and pressures typical of power reactors. This code has now been modified to include a selection of flow instability, departure from nucleate boiling (DNB), single and two-phase heat transfer correlations, and a properties library considered more applicable to the low pressures, temperatures, and flow rates encountered in research reactors. The PARET code provides a coupled thermal, hydraulic, and point kinetics capability with continuous reactivity feedback, and an optional voiding model which estimates the voiding produced by subcooled boiling. The present version of the PARET code provides a convenient means of assessing the various models and correlations proposed for use in the analysis of research reactor behavior. For comparison with experiments the SPERT-I cores B-24/32, B-12/64, and D-12/25 were chosen. The B-24/32 core is similar in design to many plate type research reactors in current operation, and the D-12/25 core is of interest because the test included both nondestructive and destructive transients

Hvordan jøderne blev til jøder i Esters bog

DEFF Research Database (Denmark)

Holt, Else Kragelund

2015-01-01

persere, der ikke ”bliver jøder”. Denne kamp tolkes som udtryk dels for en fællesskabsskabende effervescens (Durkheim), der bedst forstås gennem Purimfestens karnevaleske karakter, dels for mimetisk rivalisering (Girard), personificeret gennem Haman og Mordokaj. Purim og Esters Bog står således i en...

Interstitial pO2 in ischemic penumbra and core are differentially affected following transient focal cerebral ischemia in rats.

Science.gov (United States)

Liu, Shimin; Shi, Honglian; Liu, Wenlan; Furuichi, Takamitsu; Timmins, Graham S; Liu, Ke Jian

2004-03-01

Stroke causes heterogeneous changes in tissue oxygenation, with a region of decreased blood flow, the penumbra, surrounding a severely damaged ischemic core. Treatment of acute ischemic stroke aims to save this penumbra before its irreversible damage by continued ischemia. However, effective treatment remains elusive due to incomplete understanding of processes leading to penumbral death. While oxygenation is central in ischemic neuronal death, it is unclear exactly what actual changes occur in interstitial oxygen tension (pO2) in ischemic regions during stroke, particularly the penumbra. Using the unique capability of in vivo electron paramagnetic resonance (EPR) oximetry to measure localized interstitial pO2, we measured both absolute values, and temporal changes of pO2 in ischemic penumbra and core during ischemia and reperfusion in a rat model. Ischemia rapidly decreased interstitial pO2 to 32% +/- 7.6% and 4% +/- 0.6% of pre-ischemic values in penumbra and core, respectively 1 hour after ischemia. Importantly, whilst reperfusion restored core pO2 close to its pre-ischemic value, penumbral pO2 only partially recovered. Hyperoxic treatment significantly increased penumbral pO2 during ischemia, but not in the core, and also increased penumbral pO2 during reperfusion. These divergent, important changes in pO2 in penumbra and core were explained by combined differences in cellular oxygen consumption rates and microcirculation conditions. We therefore demonstrate that interstitial pO2 in penumbra and core is differentially affected during ischemia and reperfusion, providing new insights to the pathophysiology of stroke. The results support normobaric hyperoxia as a potential early intervention to save penumbral tissue in acute ischemic stroke.

Presidendil jäi kuulmata HIV-positiivsete palve

Index Scriptorium Estoniae

2011-01-01

Tallinnas 25. mail 2011 alanud rahvusvahelise HIV/AIDSi konverentsi avanud president Toomas Hendrik Ilvesel jäi kuulmata talle suunatud palve HIV-positiivsete inimeste ühenduselt, sest riigipea pidi konverentsilt kiiresti lahkuma

15 April 2008 - British Minister for Science and Innovation I. Pearson MP visiting the ATLAS cavern with Adviser to CERN Director-General J. Ellis, Ambassador to Switzerland S. Featherstone and Collaboration Spokesperson P. Jenni

CERN Multimedia

Claudia Marcelloni

2008-01-01

15 April 2008 - British Minister for Science and Innovation I. Pearson MP visiting the ATLAS cavern with Adviser to CERN Director-General J. Ellis, Ambassador to Switzerland S. Featherstone and Collaboration Spokesperson P. Jenni

The rise in F$_{2}^{p}$ at HERA

CERN Document Server

Ball, Richard D.; Forte, S

1994-01-01

We show that the rise in F_2^p at small x and large Q^2 seen at HERA is indeed the non-Regge double asymptotic scaling behaviour expected from the perturbative emission of strongly ordered hard gluons. An alternative explanation, in which there is no strong ordering, and a new hard Reggeon is generated, is also tried but found wanting: its theoretical short-comings are betrayed by its failure to properly account for the HERA data.

Experimental comparison of J/psi production by π+-, K+-, p and anti p beams at 39.5 GeV/c

International Nuclear Information System (INIS)

Corden, M.J.; Dowell, J.D.; Eastwood, D.; Garvey, J.; Homer, R.J.; Jobes, M.; Kenyon, I.R.; McMahon, T.; Vallance, R.J.; Watkins, P.M.; Wilson, J.A.; Gago, J.; Jung, M.; Sonderegger, P.; Treille, D.; Woodworth, P.L.; Eckardt, V.; Fent, J.; Pretzl, K.; Seyboth, P.; Seyerlein, J.; Perrin, D.; Sumorok, K.C.T.O.

1977-01-01

Measurements have been made of relative production cross sections of the J/psi by π +- , K +- , p and anti p at 39.5 GeV/c incident on copper. J/psi production rates from π - , K - and anti p are similar. The J/psi relative particle/anti-particle production cross sections for x > 0 are sigma(π + )/sigma(π - ) = (0.87+-0.14), sigma(K + )/sigma(K - ) = (0.85+-0.5) and sigma(p)/sigma(anti p) = (0.15+-0.08). The small p/anti p cross section ratio disagrees with models of J/psi production by gluon amalgamation. (Auth.)

N-isopropyl I-123 p-iodoamphetamine (IMP) brain SPECT in Alzheimer's disease

Energy Technology Data Exchange (ETDEWEB)

Momose, Toshimitsu; Nishikawa, Junichi; Kosaka, Noboru; Ohtake, Tohru; Watanabe, Toshiaki; Yoshikawa, Kohki; Iio, Masahiro [Tokyo Univ. (Japan). Faculty of Medicine

1989-09-01

Eighteen patients with Alzheimer's disease (AD), 5 patients with Pick disease (PD), 6 patients with other types of degenerative dementia (O) and 12 age-matched normal control subjects (N) were studied using N-isopropyl p-(I-123)iodoamphetamine (I-123 IMP) with SPECT. Regional to cerebellar activity (R/CE) ratio and frontal to parietal (F/R) activity ratio were evaluated in each case. I-123 IMP-SPECT revealed focal abnormality in all cases in AD, PD, O group, while XCT and/or MRI were normal or showed cerebral atrophy without focal abnormal density or intensity. In AD group, R/CE ratio in all the regions except for bilateral Rolandic area and left primary visual cortex were significantly lower (p<0.05 or p<0.01) than that in N group, and F/P ratio were significantly higher (p<0.01) than that in P and O group. In conclusion, I-123 IMP-SPECT is useful to detect focal perfusion abnormality in dementia and may be of value in differentiating Alzheimer's disease from dementia of non-Alzheimer type. (author).

N-isopropyl I-123 p-iodoamphetamine (IMP) brain SPECT in Alzheimer's disease

International Nuclear Information System (INIS)

Momose, Toshimitsu; Nishikawa, Junichi; Kosaka, Noboru; Ohtake, Tohru; Watanabe, Toshiaki; Yoshikawa, Kohki; Iio, Masahiro

1989-01-01

Eighteen patients with Alzheimer's disease (AD), 5 patients with Pick disease (PD), 6 patients with other types of degenerative dementia (O) and 12 age-matched normal control subjects (N) were studied using N-isopropyl p-[I-123]iodoamphetamine (I-123 IMP) with SPECT. Regional to cerebellar activity (R/CE) ratio and frontal to parietal (F/R) activity ratio were evaluated in each case. I-123 IMP-SPECT revealed focal abnormality in all cases in AD, PD, O group, while XCT and/or MRI were normal or showed cerebral atrophy without focal abnormal density or intensity. In AD group, R/CE ratio in all the regions except for bilateral Rolandic area and left primary visual cortex were significantly lower (p<0.05 or p<0.01) than that in N group, and F/P ratio were significantly higher (p<0.01) than that in P and O group. In conclusion, I-123 IMP-SPECT is useful to detect focal perfusion abnormality in dementia and may be of value in differentiating Alzheimer's disease from dementia of non-Alzheimer type. (author)

THE XMM-Newton and integral observations of the Supergiant Fast X-Ray Transient IGR J16328-4726

OpenAIRE

Fiocchi, M.; Bazzano, A.; Natalucci, L.; Ubertini, P.; Sguera, V.; Bird, A. J.; Boon, C.M.; Persi, P.; Piro, L.

2016-01-01

The accretion mechanism producing the short flares observed from the Supergiant Fast X-ray Transients (SFXT) is still highly debated and forms a major part in our attempts to place these X-ray binaries in the wider context of the High Mass X-ray Binaries. We report on a 216 ks INTEGRAL observation of the SFXT IGR J16328-4726 (2014 August 24–27) simultaneous with two fixed-time observations with XMM-Newton (33 and 20 ks) performed around the putative periastron passage, in order to investigate...

Regulering af jagt på vandfugle i kystzonen: Forsøg med dato-regulering på Nyord

DEFF Research Database (Denmark)

Bregnballe, T.; Hounisen, J. P.; Bøgebjerg, E.

Et 4-årigt forsøg udført på Nyord Sydeng ved Møn har vist at jagt med 1-3 ugers interval ikke påvirkede antallet af gæs, ænder og vadefugle negativt, bort set fra at enkelte arter (især jagtbare arter) optrådte i lavere antal dagen efter en jagt. Fuglenes adfærdsmæssige reaktion på udøvelse af ja...... samt effekten på fuglenes antal var mindst i et år hvor engene blev oversvømmet tidligt på efteråret. Det konkluderes at dato-regulering af jagt på strandenge kan være et velegnet værktøj hvis der skal findes et alternativ til total jagtfredning...

A strongly heated neutron star in the transient z source MAXI J0556-332

Energy Technology Data Exchange (ETDEWEB)

Homan, Jeroen; Remillard, Ronald A. [MIT Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue 37-582D, Cambridge, MA 02139 (United States); Fridriksson, Joel K.; Wijnands, Rudy [Anton Pannekoek Institute for Astronomy, University of Amsterdam, Postbus 94249, 1090 GE Amsterdam (Netherlands); Cackett, Edward M. [Department of Physics and Astronomy, Wayne State University, 666 W. Hancock St., Detroit, MI 48201 (United States); Degenaar, Nathalie [Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109 (United States); Linares, Manuel [Instituto de Astrofísica de Canarias, c/ Vía Láctea s/n, E-38205 La Laguna, Tenerife (Spain); Lin, Dacheng, E-mail: jeroen@space.mit.edu [Space Science Center, University of New Hampshire, Durham, NH 03824 (United States)

2014-11-10

We present Chandra, XMM-Newton, and Swift observations of the quiescent neutron star in the transient low-mass X-ray binary MAXI J0556-332. Observations of the source made during outburst (with the Rossi X-ray Timing Explorer) reveal tracks in its X-ray color-color and hardness-intensity diagrams that closely resemble those of the neutron-star Z sources, suggesting that MAXI J0556-332 had near- or super-Eddington luminosities for a large part of its ∼16 month outburst. A comparison of these diagrams with those of other Z sources suggests a source distance of 46 ± 15 kpc. Fits to the quiescent spectra of MAXI J0556-332 with a neutron-star atmosphere model (with or without a power-law component) result in distance estimates of 45 ± 3 kpc, for a neutron-star radius of 10 km and a mass of 1.4 M {sub ☉}. The spectra show the effective surface temperature of the neutron star decreasing monotonically over the first ∼500 days of quiescence, except for two observations that were likely affected by enhanced low-level accretion. The temperatures we obtain for the fits that include a power law (kT{sub eff}{sup ∞} = 184-308 eV) are much higher than those seen for any other neutron star heated by accretion, while the inferred cooling (e-folding) timescale (∼200 days) is similar to other sources. Fits without a power law yield higher temperatures (kT{sub eff}{sup ∞} = 190-336 eV) and a shorter e-folding time (∼160 days). Our results suggest that the heating of the neutron-star crust in MAXI J0556-332 was considerably more efficient than for other systems, possibly indicating additional or more efficient shallow heat sources in its crust.

Functional characterisation of the type 1 von Willebrand disease candidate VWF gene variants: p.M771I, p.L881R and p.P1413L.

Science.gov (United States)

Berber, Ergul; Ozbil, Mehmet; Brown, Christine; Baslar, Zafer; Caglayan, S Hande; Lillicrap, David

2017-10-01

Abnormalities in the biosynthetic pathway or increased clearance of plasma von Willebrand factor (VWF) are likely to contribute to decreased plasma VWF levels in inherited type 1 von Willebrand disease (VWD). Recent studies demonstrated that 65% of type 1 VWD patients have candidate VWF mutations, the majority of which are missense variants. The purpose of this study was to explore the effects of three VWF missense mutations (p.M771I, p.L881R and p.P1413L) located in different functional domains of VWF, reported as candidate mutations in type 1 VWD patients in the course of the MCMDM-1VWD study. The focus of these studies was on the intracellular biosynthetic processing and localisation of VWF in a heterologous cell system. Molecular dynamic simulation for p.M771I and p.P1413L was also performed to analyse the conformational effects of the changes. As determined by immunofluorescence antibody staining and confocal microscopy of HEK293 cells, the intracellular localisation of recombinant VWF with the p.M771I variation was impaired. Transient transfection studies and phorbol myristate acetate stimulation in COS-7 cells revealed significant intracellular retention. In addition, major loss of VWF multimers was observed for only the p.M771I mutation. Molecular dynamic simulations on p.M771I mutant VWF revealed distinct structural rearrangements including a large deviation in the E' domain, and significant loss of β-sheet secondary structure. The pathogenic effects of candidate VWF gene mutations were explored in this study. In vitro expression studies in heterologous cell systems revealed impaired secretion of VWF and a dominant negative effect on the processing of the wild-type protein for only the p.M771I mutation and none of the mutations affected the regulated secretion.

Transient, biocompatible electronics and energy harvesters based on ZnO.

Science.gov (United States)

Dagdeviren, Canan; Hwang, Suk-Won; Su, Yewang; Kim, Stanley; Cheng, Huanyu; Gur, Onur; Haney, Ryan; Omenetto, Fiorenzo G; Huang, Yonggang; Rogers, John A

2013-10-25

The combined use of ZnO, Mg, MgO, and silk provides routes to classes of thin-film transistors and mechanical energy harvesters that are soluble in water and biofluids. Experimental and theoretical studies of the operational aspects and dissolution properties of this type of transient electronics technology illustrate its various capabilities. Application opportunities range from resorbable biomedical implants, to environmentally dissolvable sensors, and degradable consumer electronics. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Déjà Vu: tradução assistida ao pormenor.

Directory of Open Access Journals (Sweden)

Leonel Morgado

2004-01-01

Full Text Available No campo da tradução assistida por computador, apresenta-se aqui o programa Déjà Vu. Entre outras características interessantes, este programa possui uma funcionalidade fundamental e pioneira, que contribui significativamente para a melhoria do desempenho, da coerência e da rapidez do trabalho de tradução: o reaproveitamento automático de partes de expressões, não apenas de expressões inteiras. O tradutor pode, rapidamente, enviar para a memória de tradução pares linguísticos tão simples como uma simples palavra e a respectiva tradução, não apenas frases inteiras. À medida que o programa Déjà Vu recebe os pares, passa a utilizá-los para traduzir pedaços das frases e expressões que vão surgindo, não apenas frases inteiras (se o tradutor preferir, o Déjà Vu pode apenas sugerir as traduções, em vez de as aplicar. Desta forma, o tradutor é apoiado automaticamente, mas não apenas na terminologia e nos casos de repetição de frases, como é mais habitual. Pode passar a ter apoio relativamente às formas que utiliza para expressões ou combinações de palavras que se revelem frequentes num projecto específico, ainda que não sejam suficientemente relevante para integrar glossários ou outras bases de dados terminológicas.

Devenir en padres: un análisis de las prácticas de resistencia de la organización H.I.J.O.S., Bogotá

Directory of Open Access Journals (Sweden)

Gladys Angélica Vásquez Zárate

2017-01-01

Para exigir el esclarecimiento de la verdad, h.i.j.o.s. interpela al Estado, a los partidos políticos, a las empresas nacionales y multinacionales y a la iglesia, con el fin de evidenciar las responsabilidades compartidas en el conflicto y las diferentes formas de victimización, no visibilizadas en la Ley de Víctimas —entre ellas los crímenes de Estado—, que requieren ser tenidas en cuenta dentro de las negociaciones del Acuerdo de Paz, para lograr la reconciliación en Colombia.

NuSTAR J163433-4738.7: A Fast X-ray Transient in the Galactic Plane

DEFF Research Database (Denmark)

Tomsick, John A.; Gotthelf, Eric V.; Rahoui, Farid

2014-01-01

During hard X-ray observations of the Norma spiral arm region by the Nuclear Spectroscopic Telescope Array (NuSTAR) in 2013 February, a new transient source, NuSTAR J163433-4738.7, was detected at a significance level of 8σ in the 3-10 keV bandpass. The source is consistent with having a constant......T = 1.2 ± 0.3 keV, or a Bremsstrahlung model with keV. The reduced-χ2 values for the three models are not significantly different, ranging from 1.23 to 1.44 for 8 degrees of freedom. The spectrum is strongly absorbed with cm-2, cm-2, and cm-2, for the power-law, blackbody, and Bremsstrahlung models...

Nonlinear, Incremental Structural Analysis of Olmsted Locks and Dams. Volume 2: Appendixes A through I

Science.gov (United States)

1992-12-01

steel Hr 14x117: A = 34.4 in E - 29,000,000 psi From plans provided: L - 708 in k - 1.25(34.4...El 5 U.M. il IIl I E1~ E16 40I " , _j* tool cn toA LI LL E17 Iiin Ii i cc, LL E18 11- - - U.a. U.T. ’-3 1-4 LIJ ri m q O E19 61 Uj p41’ I WI m- 14 LL...4 ’o 4 4 Ca L ~Ln 04 :L H13 00 cc I.- 1 cn LU c’J 0I z CLoZ 1A1 J: , f * 1:T T--/ CC LIL 4-4J H5l Cr) A A 1 .1, , +,-C +~ + CL H6 L1 Ul LMz WA0

Transient behavior of Cu/ZnO-based methanol synthesis catalysts

DEFF Research Database (Denmark)

Vesborg, Peter Christian Kjærgaard; Chorkendorff, Ib; Knudsen, Ida

2009-01-01

Time-resolved measurements of the methanol synthesis reaction over a Cu/ZnO-based catalyst reveal a transient methanol production that depends on the pretreatment gas. Specifically, the methanol production initially peaks after a pretreatment with an intermediate mixture of H2 and CO (20–80% H2...

Influence of water content on the inactivation of P. digitatum spores using an air-water plasma jet

Science.gov (United States)

Youyi, HU; Weidong, ZHU; Kun, LIU; Leng, HAN; Zhenfeng, ZHENG; Huimin, HU

2018-04-01

In order to investigate whether an air-water plasma jet is beneficial to improve the efficiency of inactivation, a series of experiments were done using a ring-needle plasma jet. The water content in the working gas (air) was accurately measured based on the Karl Fischer method. The effects of water on the production of OH (A2Σ+-X2Πi) and O (3p5P-3s5S) were also studied by optical emission spectroscopy. The results show that the water content is in the range of 2.53-9.58 mg l-1, depending on the gas/water mixture ratio. The production of OH (A2Σ+-X2Πi) rises with the increase of water content, whereas the O (3p5P-3s5S) shows a declining tendency with higher water content. The sterilization experiments indicate that this air-water plasma jet inactivates the P. digitatum spores very effectively and its efficiency rises with the increase of the water content. It is possible that OH (A2Σ+-X2Πi) is a more effective species in inactivation than O (3p5P-3s5S) and the water content benefit the spore germination inhibition through rising the OH (A2Σ+-X2Πi) production. The maximum of the inactivation efficacy is up to 93% when the applied voltage is -6.75 kV and the water content is 9.58 mg l-1.

Implementering af iPads i undervisningen på Skolen for Klinikassistenter, Tandplejere og Kliniske Tandteknikere (SKT, Aarhus Universitet.

Directory of Open Access Journals (Sweden)

Mads Ronald Dahl

2013-02-01

Full Text Available Tema De unge, fra den digitale generation har mange digitale kundskaber, men det er de sociale medier de mestrer. De it-kompetencer som erhvervslivet efterlyser, hos nye medarbejdere, er i høj grad funktions og anvendelses kompetencer, hvor it kan bruges som værktøj til administration, drift, informations og kommunikations teknologi. I tandlægeerhvervet vil den fremtidige procedure for dokumentation, journalisering og kommunikation med de offentlige myndigheder være digitaliseret og baseret på medarbejdernes it-kompetencer. I pilot projekt blev iPads implementeret som værktøj for formidling af fagets grundbog og case kompendier. Det digitale undervisningsmateriale blev i projektet tilgængeligt som I-bog, video og PDF dokumenter, samt suppleret og understøttet af et LMS (Learning Management System. Fokus Målet var først og fremmest at udvikle et undervisningsforløb, som løftede eleverne fra at kunne anvende, analysere og forholde sig formaliseret til faget, til i højere grad at kunne generalisere, reflektere og fremsætte fagrelevante hypoteser. Konklusion En fagdidaktisk brug af moderne informationsteknologi kræver en reflekteret forberedelse, struktureret planlægning og holdningsændring hos både elever og undervisere. I denne artikel vil vi beskrive den forberedelse, investering og ændring, som én implementering af iPads i dette konkrete undervisningsforløb betød.

Outdoor i undervisningen på pædagoguddannelserne i VIA

DEFF Research Database (Denmark)

Kjeldsen, Lis Reinholdt

2011-01-01

En undersøgelse af hvorvidt undervisere på pædagoguddannelserne i VIA anvender andre kontekster end det traditionelle undervisningslokale i deres undervisning. Der er fokus på omfang og valg af udeområder....

Neuronal-like differentiated SH-SY5Y cells adaptation to a mild and transient H2 O2 -induced oxidative stress.

Science.gov (United States)

Akki, Rachid; Siracusa, Rosalba; Morabito, Rossana; Remigante, Alessia; Campolo, Michela; Errami, Mohammed; La Spada, Giuseppina; Cuzzocrea, Salvatore; Marino, Angela

2018-03-01

Preconditioning (PC) is a cell adaptive response to oxidative stress and, with regard to neurons, can be considered as a neuroprotective strategy. The aim of the present study was to verify how neuronal-like differentiated SH-SY5Y cells adapt to a mild and transient H 2 O 2 -induced oxidative stress and, hence, whether may be considered as more sensitive cell model to study PC pathways. A first screening allowed to define H 2 O 2 concentrations for PC (10μM-50μM), applied before damage(100μM H 2 O 2 ). Cell viability measured 24 hours after 100μM H 2 O 2 -induced damage was ameliorated by 24-hour pre-exposure to low-concentration H 2 O 2 (10μM-30μM) with cell size as well restored. Markers for apoptosis (Bcl-2 and Bad), inflammation (iNOS), and redox system (MnSOD) were also determined, showing that, in cells pre-exposed to 10μM H 2 O 2 and then submitted to 100μM H 2 O 2 , Bcl-2 levels were higher, Bad and iNOS levels were lower than those observed in damaged cells, and MnSOD levels were unchanged. Such findings show that (1) neuronal-like differentiated SH-SY5Y cells are a suitable model to investigate PC response and more sensitive to the effect of a mild and transient H 2 O 2 -induced oxidative stress with respect to other neuronal cells; (2) 10μM H 2 O 2 -induced PC is mediated by apoptotic and inflammatory pathways, unlike antioxidant system; (3) such neuroprotective strategy and underlying signals proven in neuronal-like differentiated SH-SY5Y cells may contribute to understand in vivo PC mechanisms and to define a window for pharmacological intervention, namely, related to ischemic brain damage. Neuronal-like differentiated SH-SY5Y cells are a suitable model to investigate PC, an endogenous neuroprotective response to a mild and transient H 2 O 2 -induced oxidative stress, elicited by 24-hour exposure to very low H 2 O 2 concentrations and mediated by both apoptotic and inflammatory pathways. This model reflects in vivo PC mechanisms occurring

Study of the reaction {sup 22}O(p,p') with MUST detector. Development of the Cs(Tl) part of MUST-2 detector; Etude de la reaction {sup 22}O(p,p') avec le detecteur MUST. Developpement de l'etage CsI(Tl) de l'ensemble MUST 2

Energy Technology Data Exchange (ETDEWEB)

Becheva, E

2004-11-01

Elastic and inelastic proton scattering on the unstable nuclei {sup 22}O was measured in inverse kinematics at the GANIL facility. A secondary beam of {sup 22}O at 46.6 MeV/A with intensity of {approx} 1000 pps, impinged on a (CH{sub 2}){sub n} target. Recoiling protons were detected in the silicon strip array MUST. We measured the angular distributions of the ground and 2{sub 1}{sup +} states of {sup 22}O. Phenomenological and microscopic analysis of the data were performed. The phenomenological analysis using a global potential parameterization of Becchetti and Greenlees and CH89 yields a value of the deformation parameter {beta}{sub p,p}, = 0.23{+-}0.04 for {sup 22}O, much lower than that of {sup 20}O. The ratio of neutron and proton matrix element M{sub n}/M{sub p} is found equal to 1.46{+-}0.50. The microscopic analysis used of densities and transition densities calculated within HFB and QRPA models respectively. Optical potential were obtained through both folding and JLM procedures. A ratio M{sub n}/M{sub p}=2.5{+-}1.0 is deduced. Contrary of {sup 20}O, {sup 22}O behaviours like a doubly magic nucleus, suggesting a pronounced sub-shell closure at N=14. To develop the study of direct reactions induced by radioactive beams, we have developed and built, a new multi-detector MUST II devoted to light charged particle detection. In this work we established the requirements for the CsI(Tl) detector stage, and test four CsI detector prototypes, constructed by the SCIONIX company. (author)

Effects of pO2 on the activation of skeletal muscle ryanodine receptors by NO: a cautionary note.

Science.gov (United States)

Cheong, Eunji; Tumbev, Vassil; Stoyanovsky, Detcho; Salama, Guy

2005-11-01

Eu et al., reported that O2 dynamically controls the redox state of 6-8 out of 50 thiols per skeletal ryanodine receptor (RyR1) subunit and thereby tunes the response of Ca2+-release channels to authentic nitric oxide (NO) [J.P. Eu, J. Sun, L. Xu, J.S. Stamler, G. Meissner, The skeletal muscle calcium release channel: coupled O2 sensor and NO signaling functions, Cell 102 (2000) 499-509]. A role for O2 was based on the observation that RyR1 can be activated by submicromolar NO at physiological ( approximately 10 mmHg) but not ambient (approximately 150 mmHg) pO2. At ambient pO2, these critical thiols were oxidized but incubation at low pO2 reset the redox state of these thiols, closed RyR1 channels and made these thiols available for nitrosation by low NO concentrations. Eu et al., postulated the existence of a redox/O2sensor that couples channel activity to NO and pO2 and explained that "the nature of the 'redox/O2 sensor' that couples channel activity to intracellular redox chemistry is a mystery". Here, we re-examined the effect of pO2 on RyR1 and find that incubation of RyR1 at low pO2 did not alter channel activity and NO (0.5-50 microM) failed to activate RyR1 despite a wide range of pO2 pre-incubation conditions. We show that low levels of NO do not activate RyR1, do not reverse the inhibition of RyR1 by calmodulin (CaM) even at physiological pO2. Similarly, the pre-incubation of SR vesicles in low pO2 (for 10-80 min) did not inhibit channel activity or sensitization of RyR1 to NO. We discuss the significance of these findings and propose that caution should be taken when considering a role for pO2 and nitrosation by NO as mechanisms that tune RyRs in striated muscles.

SWIFT J1749.4-2807: A neutron or quark star?

International Nuclear Information System (INIS)

Yu Junwei; Xu Renxin

2010-01-01

We investigate a unique accreting millisecond pulsar with X-ray eclipses, SWIFT J1749.4-2807 (hereafter J1749), and try to set limits on the binary system by various methods including use of the Roche lobe, the mass-radius relations of both main sequence (MS) and white dwarf (WD) companion stars, as well as the measured mass function of the pulsar. The calculations are based on the assumption that the radius of the companion star has reached its Roche radius (or is at 90%), but the pulsar's mass has not been assumed to be a certain value. Our results are as follows. The companion star should be an MS one. For the case that the radius equals its Roche one, we have a companion star with mass M ≅ 0.51 M o-dot and radius R c ≅ 0.52 R o-dot , and the inclination angle is i ≅ 76.5 0 ; for the case that the radius reaches 90% of its Roche one, we have M ≅ 0.43 M o-dot , R c ≅ 0.44 R o-dot and i ≅ 75.7 0 . We also obtain the mass of J1749, M p ≅ 1 M o-dot , and conclude that the pulsar could be a quark star if the ratio of the critical frequency of rotation-mode instability to the Keplerian one is higher than ∼ 0.3. The relatively low pulsar mass (about ∼ M o-dot ) may also challenge the conventional recycling scenario for the origin and evolution of millisecond pulsars. The results presented in this paper are expected to be tested by future observations. (letters)

Shell model description of 16O(p,γ)17F and 16O(p,p)16O reactions

International Nuclear Information System (INIS)

Bennaceur, K.; Michel, N.; Okolowicz, J.; Ploszajczak, M.; Bennaceur, K.; Nowacki, F.; Okolowicz, J.

2000-01-01

We present shell model calculations of both the structure of 17 F and the reactions 16 O(p,γ) 17 F, 16 O(p,p) 16 O. We use the ZBM interaction which provides a fair description of the properties of 16 O and neighbouring nuclei and, in particular it takes account for the complicated correlations in coexisting low-lying states of 16 O. (authors)

Vertybių hierarchija ankstyvojoje J. Mikelinsko kūryboje

OpenAIRE

Gustaitė, Ilma

2010-01-01

Vertybių hierarchija ankstyvojoje Jono Mikelinsko kūryboje Pagrindinis darbo „Vertybių hierarchija ankstyvojoje J. Mikelinsko kūryboje“ tikslas yra atskleisti lietuvių rašytojo sukurto personažo asmenybės koncepciją, įvertinti autoriaus pristatomą moralų herojų pagal filosofo I. Kanto kategoriškąjį imperatyvą, o taip pat – atskleisti šio literatūros kūrėjo meninės saviraiškos būdus bei priemones, iš kurių ryškiausia yra ezopinė kalba. Rašytojas J. Mikelinskas – tai vienas moraliausi...

An X-ray view of the very faint black hole X-ray transient Swift J1357.2-0933 during its 2011 outburst

NARCIS (Netherlands)

Armas Padilla, M.; Wijnands, R.; Altamirano, D.; Méndez, M.; Miller, J. M.; Degenaar, N.

We report on the X-ray spectral (using XMM-Newton data) and timing behaviour [using XMM-Newton and Rossi X-ray Timing Explorer (RXTE) data] of the very faint X-ray transient and black hole system Swift J1357.2-0933 during its 2011 outburst. The XMM-Newton X-ray spectrum of this source can be

Role of multiparton interactions on J /ψ production in p +p collisions at LHC energies

Science.gov (United States)

Thakur, Dhananjaya; De, Sudipan; Sahoo, Raghunath; Dansana, Soumya

2018-05-01

The production mechanism of quarkonia states in hadronic collisions is still to be understood by the scientific community. In high-multiplicity p +p collisions, underlying event observables are of major interest. The multiparton interactions (MPIs) are underlying event observables, in which several interactions occur at the partonic level in a single p +p event. This leads to dependence of particle production on event multiplicity. If the MPI occurs in a harder scale, there will be a correlation between the yield of quarkonia and total charged-particle multiplicity. The ALICE experiment at the LHC in p +p collisions at √{s }=7 and 13 TeV has observed an approximate linear increase of relative J /ψ yield, (d/NJ /ψ/d y ⟨d NJ /ψ/d y ⟩ ), with relative charged-particle multiplicity density, (d/Nch/d y ⟨d Nch/d y ⟩ ). In our present work, we have performed a comprehensive study of the production of charmonia as a function of charged-particle multiplicity in p +p collisions at LHC energies using the perturbative QCD-inspired multiparton interaction model, pythia8 tune 4C, with and without the color reconnection scheme. A detailed multiplicity and energy-dependent study is performed to understand the effects of MPI on J /ψ production. The ratio of ψ (2 S ) to J /ψ is also studied as a function of charged-particle multiplicity at LHC energies.

Physical properties of iodate solutions and the deliquescence of crystalline I2O5 and HIO3

Directory of Open Access Journals (Sweden)

B. J. Murray

2010-12-01

Full Text Available Secondary aerosol produced from marine biogenic sources in algal-rich coastal locations will initially be composed of iodine oxide species, most likely I2O5, or its hydrated form HIO3, formed as a result of iodine gas-phase chemistry. At present, there is no quantitative hygroscopic data for these compounds and very little data available for iodate solutions (HIO3 and I2O5 share a common aqueous phase. With increased interest in the role of such aerosol in the marine atmosphere, we have conducted studies of (i the deliquescence behaviour of crystalline HIO3 and I2O5 at 273–303 K, (ii the efflorescence behaviour of aqueous iodate solution droplets, and (iii properties (water activity, density, and viscosity of subsaturated and saturated iodate solutions. The deliquescence of I2O5 crystals at 293 K was observed to occur at a relative humidity (DRH of 80.8±1.0%, whereas for HIO3, a DRH of 85.0±1.0% was measured. These values are consistent with measured water activity values for saturated I2O5 and HIO3 solutions at 293 K of 0.80±0.01 and 0.84±0.01 respectively. At all temperatures, DRH values for HIO3 crystals were observed to be higher than for those of I2O5. The temperature-dependent DRH data, along with solubility and water activity data were used to evaluate the enthalpy of solution (ΔHsol for HIO3 and I2O5. A ΔHsol value of 8.3±0.7 kJ mol−1 was determined for HIO3 which is consistent with a literature value of 8.8 kJ mol−1. For I2O5, we report for the first time its solubility at various temperatures and ΔHsol = 12.4±0.6 kJ mol−1. The measured water activity values confirm that aqueous iodate solutions are strongly non-ideal, consistent with previous reports of complex ion formation and molecular aggregation.

The effect of an atomically deposited layer of alumina on NiO in P-type dye-sensitized solar cells.

Science.gov (United States)

Natu, Gayatri; Huang, Zhongjie; Ji, Zhiqiang; Wu, Yiying

2012-01-10

We present a systematic investigation of the fundamental effects of an atomically deposited alumina (AlO(x)H(y)) onto the NiO films in p-type dye-sensitized solar cells (p-DSCs). With P1 as the sensitizing dye and 0.1 M I(2) and 1.0 M LiI in 3-methoxypropionitrile as the electrolyte, one atomic layer deposition (ALD) cycle of alumina was used to achieve a 74% increase in the overall conversion efficiency of a NiO-based DSC. The open circuit voltage of the cells increased from 0.11 to 0.15 V, and the short circuit current density increased from 0.83 to 0.95 mA/cm(2). Adsorption isotherm studies were performed to show that the amount of dye adsorbed on the NiO-alumina film is slightly lower than the amount adsorbed on the nontreated NiO film. The increased J(sc) was therefore assigned to the increased efficiency of carrier collection at the semiconductor-FTO interface. Our study of the photocurrent onset potentials of NiO and NiO-alumina films with the chopped light measurement technique showed no definitive difference in the onset potential values. However, the DSCs based on NiO-alumina showed a higher recombination resistance value from the electrochemical impedance studies and a higher diode ideality factor from the V(oc) versus ln(light intensity) plots as compared to the DSCs based on untreated NiO. It has thus been established that the increase in V(oc) upon alumina treatment arises due to a higher resistance for electron-hole recombination across NiO surface locally.

J.A.P. Style - killuke rõivailu / Kai Ilustrumm

Index Scriptorium Estoniae

Ilustrumm, Kai

2004-01-01

Moekunstnike Janina Pasti (õppinud arhitektuuri, sisekujundust, graafikat) ja Aleksandr Pasti (ka ajakirjanik, fotoreporter) firmast J.A.P.Style ja uuest kollektsioonist. Inspiratsiooni saavad Versace loomingust

Volcanic Outgassing and the Rise of Atmospheric O2

Science.gov (United States)

Kasting, J. F.

2012-12-01

The release of reduced volcanic gases played a major role in determining atmospheric composition and redox state during the Earth's Archean era. Along with anerobic iron oxidation during deposition of banded iron-formations (BIFs), volcanic outgassing was one of two major sources of reductants, typically monitored as H2 equivalents, to the early atmosphere. These H2 sources were balanced by sinks of reductants, including escape of hydrogen to space and burial of organic matter and pyrite. The sinks for H2 can alternatively be thought of as sources for O2, following the stoichiometry: 2 H2 + O2 2 H2O. During the Archean, H2 sources were large enough to balance burial of organic matter and pyrite and still allow lots of hydrogen to escape. Sometime close to 2.4 Ga, the redox balance shifted: Either the H2 sources became smaller, or the H2 sinks became larger. The result was that O2 began to accumulate in the atmosphere for the first time, even though it was being produced by cyanobacteria well before this. This allowed a new O2 sink (H2 source) to become operative, namely, oxidative weathering of the land surface and seafloor. On the modern Earth, the redox budget is largely a balance between burial of organic matter and pyrite and oxidative weathering on land. What caused the system to shift to the oxidized state at 2.4 Ga remains a matter of debate. A secular decrease in volcanic outgassing rates alone cannot do this, as organic carbon burial is (loosely) tied to outgassing by the carbon isotope record. Roughly 15-20% of CO2 entering the combined atmosphere-ocean system appears to have been buried as organic carbon; hence, more volcanic outgassing implies more organic carbon burian (and, hence, more O2 production), if everything else stays the same. Other factors were not the same, however. Progressive growth of the continents may have helped O2 to rise, both by changing the ratio of submarine to subaerial outgassing and by facilitating greater recycling of carbon

Domestic Base Factors, Fiscal Year 1979. Volume I.

Science.gov (United States)

1980-03-01

IL IL0 i) 0 - 00000000- U) w CD 9) 0oG) 1 0 0 000000000 z IZ w ’CI CD . .- w z-. >_ I-". 0000NDV)-0 0. IU) &j z L04)9 Va. o o - r- 0 Wa WixE - M0() I)w...O IL U V j N 0q v f - 0 0 IL ~I-- U. -0 - -.J - 0 400 -I0 00000000-i Z W 44 < 4 J. 00000000wo3 *0 wIx . < W.- 0 00 0 V7 00000-440 Qz ɜWW 0 x 0r...0 01~ a - 000 NN 𔃾 0 LIo N 0 NN NI 0 3 0𔃺 V C) o 4-Z LIe a- a< Ow)’O Ld wIx - z IL0 0 N rt 0U. o LOU 0ir PI 0 0 C0 W _ W -Z V; 0a - OOZO LI SD It

Preparation of ZnO film on p-Si and I-V characteristics of p-Si/n-ZnO

OpenAIRE

Mondal, Shampa; Kanta, Kalyani Prasad; Mitra, Partha

2012-01-01

Zinc oxide (ZnO) thin films were deposited on p-silicon (Si) substrate from ammonium zincate bath following a chemical dipping technique called SILAR. Films in the thickness range 0.5-4.5 µm could be prepared by varying the number of dipping for a fixed concentration (0.125 M) of zincate bath and fixed pH (11.00-11.10). Higher values of dipping produced nonadherent and poor quality films. Structural characterization by X-ray diffraction (XRD) indicates the formation of polycrystalline single ...

Characterization of transient gain x-ray lasers

International Nuclear Information System (INIS)

Dunn, J.; Osterheld, A.; Shlyaptsev, V.

1999-01-01

We have performed numerical simulations of the transient collisional excitation Ni-like Pd 4d → 4p J = 0 → 1 147 angstrom laser transition recently observed at Lawrence Livermore National Laboratory (LLNL). The high gain ∼35 cm results from the experiment are compared with detailed modeling simulations from the 1-D RADEX code in order to better understand the main physics issues affecting the measured gain and x-ray laser propagation along the plasma column. Simulations indicate that the transient gain lifetime associated with the short pulse pumping and refraction of the x-ray laser beam out of the gain region are the main detrimental effects. Gain lifetimes of ∼7 ps(1/e decay) are inferred from the smoothly changing gain experimental observations and are in good agreement with the simulations. Furthermore, the modeling results indicate the presence of a longer-lived but lower gain later in time associated with the transition from transient to quasi-steady state excitation

There is no I/O like no I/O

International Nuclear Information System (INIS)

Johnston, T.Y.

1985-01-01

On most computer systems the most common cause of performance degradation is I/O contention. This paper will examine some efforts that can be taken in a VM environment to reduce I/O or its effect at both the global and local levels

76 FR 41829 - J.P. Morgan Securities LLC, et al.; Notice of Application and Temporary Order

Science.gov (United States)

2011-07-15

... SECURITIES AND EXCHANGE COMMISSION [Release No. IC-29719; 812-13919] J.P. Morgan Securities LLC... entered against J.P. Morgan Securities LLC (``JPMS'') on July 8, 2011 by the United States District Court... Distribution Services, Inc. (``JPMDS''), J.P. Morgan Institutional Investments, Inc. (``JPMII''), J.P. Morgan...

76 FR 39447 - J.P. Morgan Securities LLC, et al.; Notice of Application and Temporary Order

Science.gov (United States)

2011-07-06

... SECURITIES AND EXCHANGE COMMISSION [Release No. IC-29711; File No. 812-13914] J.P. Morgan... injunction entered against J.P. Morgan Securities LLC (``J.P. Morgan Securities'') on June 29, 2011 by the... order. Applicants: J.P. Morgan Securities; Bear Stearns Asset Management Inc. (``BSAM''); Bear Stearns...

P-GaN/ZnO nanorod heterojunction LEDs—effect of carrier concentration in p-GaN

Science.gov (United States)

Ng, A. M. C.; Chen, X. Y.; Fang, F.; Djurišić, A. B.; Chan, W. K.; Cheah, K. W.

2011-12-01

We studied the effect of carrier concentration in p-GaN substrate on the performance of p-GaN/n-ZnO nanorod heterojunction LEDs. ZnO nanorods were electrodeposited on commercial p-GaN wafers in a two electrode system from aqueous solutions of zinc nitrate and hexamethylenetetramine. The morphology and optical properties of ZnO nanorods were studied using photoluminescence and electron microscopy, and the LED device performance was studied by electroluminescence (EL) and I-V measurements.

Participação cidadã na formulação da política pública do esporte catarinense

Directory of Open Access Journals (Sweden)

Clerilei Aparecida Bier

Full Text Available Resumo No presente estudo investiga-se a participação cidadã no processo de elaboração da política pública do esporte catarinense, o que o caracteriza quanto ao seu objetivo como uma pesquisa descritiva. O período analisado inicia-se em 1992 e se estende até o ano de 2006. O método utilizado foi o de estudo de caso, e a coleta de dados foi realizada por meio de diferentes técnicas pertinentes a este método, a saber: observação participante, entrevistas em profundidade e pesquisa documental. Os resultados demonstraram que, embora os principais atores sociais que participaram do processo de elaboração da política pública tenham sido principalmente aqueles que já estavam engajados anteriormente no processo da public policy making, a participação cidadã existiu sob a forma cooperativa e por meio de colegiados públicos.

Diffractive J/Psi Production; Produção Difrativa de $J/psi$ no Experimento DØ

Energy Technology Data Exchange (ETDEWEB)

dos Santos Assis Jesus, Ana Carolina [Federal Univ., Rio de Janeiro (Brazil)

2007-07-01

This work presents measurements of two diffractive production ratio for heavy flavour physics with the use of a reconstructed J/Ψ → μ⁺μ^- sample in p$\\bar{p}$ collisions at √s = 1.96 TeV using the D0 detector at Fermilab Tevatron. These events were selected using the Luminosity Monitor detectors, the calorimeter system and the muon system in a pseudo-rapidity region with range 2.7 ≤ |η| ≤ 4.4. The measured ratio were estimated to be N$J/Ψ\\atop{diff}$/N$J/Ψ\\atop{total}$ = (1.74 ± 0.16(stat) {+-} 0.13(syst))% e N$b\\atop{diff}$/N$b\\atop{total}$ = (0.79 ± 0.11(stat) ± 0.23(syst))%.

Femosecond dynamics of quasi-particles in YBa2Cu3O7-δ superconductor films

International Nuclear Information System (INIS)

Han, S.G.; Vardeny, Z.V.; Symko, O.G.; Koren, G.

1991-01-01

This paper reports on the transient electronic response of YBa 2 Cu 3 O 7-δ epitaxially grown HT c superconductor thin films in the femtosecond time domain, using transient photoinduced reflectivity (ΔR) with 60 fsec time resolution. For temperatures T > T c only a bolometric signal was observed with ΔR > O. For T c ΔR < O with a temperature dependent rise time of order 300 fsec followed by a relaxation (of order 3 psec) into a state with Δ are explained in terms of quasi-particle (QP) electronic response giving ΔR < O. Thus the femtosecond rise time is interpreted as avalanche multiplication of QP across the gap 2Δ and the subsequent picosecond relaxation as QP recombination. The QP optical response is explained within the two fluid model

Post deposition annealing effect on the properties of Al2O3/InP interface

Science.gov (United States)

Kim, Hogyoung; Kim, Dong Ha; Choi, Byung Joon

2018-02-01

Post deposition in-situ annealing effect on the interfacial and electrical properties of Au/Al2O3/n-InP junctions were investigated. With increasing the annealing time, both the barrier height and ideality factor changed slightly but the series resistance decreased significantly. Photoluminescence (PL) measurements showed that the intensities of both the near band edge (NBE) emission from InP and defect-related bands (DBs) from Al2O3 decreased with 30 min annealing. With increasing the annealing time, the diffusion of oxygen (indium) atoms into Al2O3/InP interface (into Al2O3 layer) occurred more significantly, giving rise to the increase of the interface state density. Therefore, the out-diffusion of oxygen atoms from Al2O3 during the annealing process should be controlled carefully to optimize the Al2O3/InP based devices.

Arsenic trioxide (As2O3) induced calcium signals and cytotoxicity in two human cell lines: SY-5Y neuroblastoma and 293 embryonic kidney (HEK)

International Nuclear Information System (INIS)

Florea, Ana-Maria; Splettstoesser, Frank; Buesselberg, Dietrich

2007-01-01

Arsenic trioxide (As 2 O 3 ) has anticancer properties; however, its use also leads to neuro-, hepato- or nephro-toxicity, and therefore, it is important to understand the mechanism of As 2 O 3 toxicity. We studied As 2 O 3 influence on intracellular calcium ([Ca 2+ ] i ) homeostasis of human neuroblastoma SY-5Y and embryonic kidney cells (HEK 293).We also relate the As 2 O 3 induced [Ca 2+ ] i modifications with cytotoxicity. We used Ca 2+ sensitive dyes (fluo-4 and rhod-2) combined with laser scanning microscopy or fluorescence activated cell sorting to measure Ca 2+ changes during the application of As 2 O 3 and we approach evaluation of cytotoxicity. As 2 O 3 (1 μM) increased [Ca 2+ ] i in SY-5Y and HEK 293 cells. Three forms of [Ca 2+ ] i -elevations were found: (1) steady-state increases (2) transient [Ca 2+ ] i -elevations and (3) Ca 2+ -spikes. [Ca 2+ ] i modifications were independent from extracellular Ca 2+ but dependent on internal calcium stores. The effect was not reversible. Inositol triphosphate (IP 3 ) and ryanodine (Ry) receptors are involved in regulation of signals induced by As 2 O 3 . 2-APB and dantrolene significantly reduced the [Ca 2+ ] i -rise (p 2+ ] i -elevation or spiking. This indicates that other Ca 2+ regulating mechanisms are involved. In cytotoxicity tests As 2 O 3 significantly reduced cell viability in both cell types. Staining with Hoechst 33342 showed occurrence of apoptosis and DNA damage. Our data suggest that [Ca 2+ ] i is an important messenger in As 2 O 3 induced cell death

Surdegsbröd och jästbröd : skillnad i smak och GI-värde

OpenAIRE

Björkman, Andreas; Jeppsson, Julia

2015-01-01

Inledning: Surdeg är idag en trend som fångats av många och de flesta bagerier ochdagligvarubutiker säljer bröd som kallas för surdegsbröd. Ett traditionellt surdegsbröd är ettbröd där surdegen används som enda hävningsmedel i brödet. Syfte: Syftet var att undersöka skillnader i sensoriska egenskaper, utifrån ettkonsumentperspektiv, samt GI-värde mellan surdegsbröd, jästbröd och bröd bakat på bådesurdeg och jäst. Material och metod: Metoderna som användes var två olika konsumenttester för att...

QUINOA (<i>CHENOPODIUM QUINOAi> WILLD: DIGESTIBILIDADE <i>IN VITROi>, DESENVOLVIMENTO E ANÁLISE SENSORIAL DE PREPARAÇÕES DESTINADAS A PACIENTES CELÍACOS

Directory of Open Access Journals (Sweden)

L. I. A. CASTRO

2008-11-01

Full Text Available <p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify; mso-layout-grid-align: none;"> A quinoa (<i>Chenopodium quinoai> Willd é um pseudocereal isento de glúten, oriundo dos Andes, onde tem sido cultivado há milhares de anos. O objetivo deste trabalho foi desenvolver e avaliar sensorialmente algumas preparações contendo quinoa em grãos, flocos e farinha, destinadas ao paciente celíaco, e determinar a digestibilidade <i>in vitroi> de sua proteína, submetida ou não ao tratamento térmico. As amostras foram avaliadas sensorialmente através de um teste de aceitação utilizando a escala hedônica nominal de 9 pontos. O método utilizado na análise da digestibilidade protéica <i>in vitroi> foi o da queda de pH após 10 minutos, com a adição das enzimas tripsina e pancreatina às amostras de quinoa, tratadas e não tratadas termicamente. Das sete preparações testadas, seis foram bem aceitas, já que apresentaram um Índice de Aceitabilidade maior que 70%. Os flocos e grãos de quinoa, após serem testados termicamente, tiveram sua digestibilidade otimizada. Portanto, a quinoa e seus derivados podem ser considerados uma boa opção para a alimentação dos indivíduos portadores da doença celíaca.p>

Low-energy reaction yields for 18O(p,γ) and 18O(α,γ)

International Nuclear Information System (INIS)

Vogelaar, R.B.; Wang, T.R.; Kellogg, S.E.; Kavanagh, R.W.

1990-01-01

Resonance yields, γ-ray branching, and low-energy limits have been measured for 18 O(p,γ) and 18 O(α,γ), for E p α <0.78 MeV, using a 4π array of NaI detectors. The results confirm previous resonance strengths, and set additional constraints on possible low-energy contributions to stellar reaction rates

National Dam Inspection Program. Perrins Marsh Dam (NDI I.D. PA-0886, DER I.D. 066-005), Susquehanna River Basin Whitelock Creek, Wyoming County, Pennsylvania. Phase I Inspection Report,

Science.gov (United States)

1981-01-01

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Filtering reaction dynamics using nearside-farside theory and local angular momentum theory: application to the angular scattering of the H + D2(v(i) = 0, j(i) = 0) --> HD(v(f) = 3, j(f) = 0) + D reaction in the energy and time domains.

Science.gov (United States)

Monks, P D D; Connor, J N L; Bouakline, F

2009-04-23

We investigate methods for filtering reaction mechanisms in the angular scattering of the state-to-state reaction, H + D(2)(v(i) = 0, j(i) = 0, m(i) = 0) --> HD(v(f) = 3, j(f) = 0, m(f) = 0) + D, where v(i), j(i), and m(i) and v(f), j(f), and m(f) are initial and final vibrational, rotational, and helicity quantum numbers, respectively. The input to our filtrations is a new set of accurate quantum scattering matrix elements for total energies in the range 1.52-2.50 eV (in steps of 0.01 eV) and for total angular momentum quantum numbers in the range, 0-40, in steps of unity. We filter reaction mechanisms in both the energy domain and the time domain. The time-domain calculations employ the plane wave packet formulation of time-dependent scattering. The theoretical tools used are nearside-farside (NF) analysis of partial wave series for scattering amplitudes, together with NF local angular momentum (LAM) theory. An energy-domain LAM analysis reveals the existence of an important dynamical feature in the N scattering, a "trench" which bisects the (energy, angle) plane. We use the location of this trench to approximately filter two reaction mechanisms. Transformation to the time domain demonstrates that the two reaction mechanisms correspond to direct and delayed (by about 25 fs) scattering. Further analysis, including filtration in the time domain, shows that the pronounced LAM trench arises from the interference of the energy-domain analogues of the time-direct and time-delayed scattering. Our theory and results provide the first successful demonstration of reaction mechanism filtering carried out directly in the (energy, angle) domain. The calculations and results in this paper extend and complement earlier research reported by Monks, Connor, and Althorpe (Monks, P. D. D.; Connor, J. N. L.; Althorpe, S. C. J. Phys. Chem. A 2006, 110, 741; J. Phys. Chem. A 2007, 111, 10302).

<i>Caracterização de biotérios, legislação e padrões de biossegurançai>

Directory of Open Access Journals (Sweden)

FLAVIO AUGUSTO SANCHES POLITI

2009-01-01

Full Text Available <p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify; mso-layout-grid-align: none;"> O emprego de animais de laboratório em conjunto com estudos realizados em humanos fornece uma base para a compreensão de vários processos fisiológicos e patológicos importantes. Além disso, os resultados de estudos experimentais possibilitam uma melhor compreensão e segurança para o desenvolvimento de técnicas cirúrgicas na clínica médica. Por se tratar de material biológico vivo, devemos garantir sua integridade física levando-se em consideração as contaminações microbiológicas, a genética, a nutrição e a correta manipulação, a fim de se evitar que ocorram conclusões inválidas nos experimentos ou que se aumente desnecessariamente o número de animais utilizados. Em paralelo às preocupações e legislações sobre o uso de animais de laboratório, desenvolveu-se também a preocupação com o bem estar e a segurança das pessoas que manuseiam os animais de laboratório, uma vez que estas correm riscos de adquirirem doenças ocupacionais pela presença de contaminações zoonóticas ou por desenvolvimento de alergias. A prevenção requer a aplicação de modernos avanços tecnológicos no desenho do biotério e nas rotinas de trabalho. Infelizmente poucos estabelecimentos do país apresentam recursos humanos com formação apropriada e infra-estrutura básica de pesquisa que inclua os centros de criação de animais de laboratório, equivalentes àqueles existentes nos Estados Unidos e Europa. <i>Palavras-chave>: animais de laboratório; legislações; biotério; segurança.p> <i>ABSTRACT> <i>Animal housing: characterization, legislation and biosafety standardsi> <p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify; mso-layout-grid-align: none;"> The use of laboratory animals together with studies accomplished in human patients has been supplying a base

Utilização da vacina Escherichia coli J5 na imunização de vacas leiteiras contra mastites causadas por E. coli

Directory of Open Access Journals (Sweden)

Lívio R. Molina

2013-03-01

Full Text Available Avaliou-se a utilização da vacina Escherichia coli J5, na imunização de vacas leiteiras, para prevenção e controle da mastite causada por E. coli através da análise da prevalência das infecções intramamárias (IMM no pós-parto, ocorrência e intensidade dos casos clínicos de mastite nos primeiros 100 dias de lactação, influência na contagem de células somáticas (CCS e produção de leite. O grupo experimental foi composto de 187 animais, divididos em 2 grupos, vacas vacinadas e não vacinadas. As imunizações ocorreram 60 dias antes do parto, 30 dias antes do parto e na primeira semana pós-parto. No dia da secagem e sete dias após o parto foram coletadas amostras para diagnóstico microbiológico dos patógenos causadores de mastite. A ocorrência de casos clínicos foi verificada pelo teste da caneca durante as ordenhas sendo registrados os dados relacionados à intensidade. Amostras foram coletadas mensalmente, a partir do décimo dia de lactação, para avaliação da CCS. A produção de leite foi registrada mensalmente nos primeiros 100 dias de lactação. Verificou-se no grupo vacinado, redução na prevalência de E. coli no pós-parto, na ocorrência de casos clínicos por E.coli nos primeiros 100 dias de lactação bem como na intensidade destes casos clínicos. Não foram observadas diferenças estatísticas significativas na CCS, entretanto vacas vacinadas apresentaram maior produção de leite, comparadas às vacas não vacinadas. A vacinação com E. coli J5 foi eficaz em reduzir a prevalência de infecções intramamárias (IMM ao parto, ocorrência e intensidade dos casos clínicos e aumento na produção de leite nos primeiros 100 dias de lactação.

Lactobacillus reuteri I5007 Modulates Intestinal Host Defense Peptide Expression in the Model of IPEC-J2 Cells and Neonatal Piglets

Science.gov (United States)

Liu, Hongbin; Hou, Chengli; Wang, Gang; Jia, Hongmin; Yu, Haitao; Zeng, Xiangfang; Thacker, Philip A.; Zhang, Guolong; Qiao, Shiyan

2017-01-01

Modulation of the synthesis of endogenous host defense peptides (HDPs) by probiotics represents a novel antimicrobial approach for disease control and prevention, particularly against antibiotic-resistant infections in human and animals. However, the extent of HDP modulation by probiotics is species dependent and strain specific. In the present study, The porcine small intestinal epithelial cell line (IPEC-J2) cells and neonatal piglets were used as in-vitro and in-vivo models to test whether Lactobacillus reuteri I5007 could modulate intestinal HDP expression. Gene expressions of HDPs, toll-like receptors, and fatty acid receptors were determined, as well as colonic short chain fatty acid concentrations and microbiota. Exposure to 108 colony forming units (CFU)/mL of L. reuteri I5007 for 6 h significantly increased the expression of porcine β-Defensin2 (PBD2), pBD3, pBD114, pBD129, and protegrins (PG) 1-5 in IPEC-J2 cells. Similarly, L. reuteri I5007 administration significantly increased the expression of jejunal pBD2 as well as colonic pBD2, pBD3, pBD114, and pBD129 in neonatal piglets (p reuteri I5007 in the piglets did not affect the colonic microbiota structure. Our findings suggested that L. reuteri I5007 could modulate intestinal HDP expression and improve the gut health of neonatal piglets, probably through the increase in colonic butyric acid concentration and the up-regulation of the downstream molecules of butyric acid, PPAR-γ and GPR41, but not through modifying gut microbiota structure. PMID:28561758

Czynniki ryzyka przewlekłej obturacyjnej choroby płuc u pacjentów leczonych szpitalnie

Directory of Open Access Journals (Sweden)

Małgorzata Iwanicka-Michałowicz

2009-06-01

Full Text Available POChP należy obecnie do najpoważniejszych problemów zdrowotnych na świecie. Najczęstszym czynnikiem, który odpowiada za rozwój POChP, jest palenie tytoniu, zarówno czynne, jak i bierne. Kolejnymi przyczynami warunkującymi rozwój POChP są narażenie zawodowe na pyły, substancje chemiczne, gazy drażniące. Czynnikiem ryzyka jest także wrodzony niedobór α1-antytrypsyny (czynnik genetyczny. Celem pracy była analiza czynników ryzyka warunkujących rozwój POChP. W badaniu wzięło udział 200 osób z rozpoznaniem POChP leczonych szpitalnie w latach 2005-2007. U wszystkich chorych przeprowadzono wywiad według kwestionariusza przygotowanego na potrzeby badania. Wyniki badania poddano analizie statystycznej. W badanej grupie było 76 kobiet (38% i 124 mężczyzn (62%. Średnia wieku mężczyzn wynosiła 66,1 roku, kobiet – 66,4 roku. Głównym czynnikiem ryzyka rozwoju choroby w badanej grupie było palenie tytoniu – stwierdzono je u 170 badanych (85%, przy czym 37,5% chorych było aktualnymi palaczami, a 47,5% byłymi palaczami. Średni czas trwania nałogu w grupie obecnych i byłych palaczy wyniósł 42 paczkolata (rozpiętość 1-160. POChP rozpoznano również u 30 osób nigdy niepalących papierosów (15%. Narażenie na bierne palenie wpracy i/lub wdomu podawało 175 chorych (87,5%. Narażenie na wdychanie szkodliwych substancji w środowisku pracy zgłaszało 150 badanych (75%. W związku z faktem, że nałóg palenia tytoniu jest zjawiskiem bardzo częstym wśród chorych na POChP, konieczne wydaje się zintensyfikowanie działań mających na celu upowszechnianie wiedzy na temat przyczyn i skutków POChP, realizację edukacji antytytoniowej oraz wdrożenie taniej i skutecznej metody badań przesiewowych.

"Jag tror ju på allas lika värde oavsett kön" En studie om hur förskollärares resonemang kring sitt jämställdhetsuppdrag kommer till uttryck i mötet med barn.

OpenAIRE

Gisslén, Mia

2013-01-01

Denna studie har som syfte att belysa relationen mellan förskollärares resonemang om sitt jämställdhetsuppdrag och hur det kommer till uttryck i det direkta mötet med barn. Studiens empiri har samlats ihop genom två halvstrukturerade intervjuer med två förskollärare och tre löpande observationer i samlingssituation vid en förskola. Resultatet visar att förskollärarna resonerar kring sitt jämställdhetsuppdrag på ett professionellt sätt. De visar hög medvetenhet när de resonerar om sitt jämstäl...

Linkages between ocean circulation, heat uptake and transient warming: a sensitivity study

Science.gov (United States)

Pfister, Patrik; Stocker, Thomas

2016-04-01

. Lett., 41, 7306-7313 Rose, B. E. J., K. C. Armour, D. S. Battisti, N. Feldl, and D. D. B. Koll (2014), The dependence of transient climate sensitivity and radiative feedbacks on the spatial pattern of ocean heat uptake, Geophys. Res. Lett., 41, 1071-1078 Winton M., K. Takahashi and I. M. Held (2010), Importance of ocean heat uptake efficacy to transient climate change, J. Clim., 23, 2333-44 Winton, M., S. M. Griffies, B. Samuels, J. L. Sarmiento and T. L. Frölicher (2013) Connecting changing ocean circulation with changing climate, J. Clim., 26, 2268-78

Effects of luminal flow and nucleotides on [Ca(2+)](i) in rabbit cortical collecting duct.

Science.gov (United States)

Woda, Craig B; Leite, Maurilo; Rohatgi, Rajeev; Satlin, Lisa M

2002-09-01

Nucleotide binding to purinergic P2 receptors contributes to the regulation of a variety of physiological functions in renal epithelial cells. Whereas P2 receptors have been functionally identified at the basolateral membrane of the cortical collecting duct (CCD), a final regulatory site of urinary Na(+), K(+), and acid-base excretion, controversy exists as to whether apical purinoceptors exist in this segment. Nor has the distribution of receptor subtypes present on the unique cell populations that constitute Ca(2+) the CCD been established. To examine this, we measured nucleotide-induced changes in intracellular Ca(2+) concentration ([Ca(2+)](i)) in fura 2-loaded rabbit CCDs microperfused in vitro. Resting [Ca(2+)](i) did not differ between principal and intercalated cells, averaging approximately 120 nM. An acute increase in tubular fluid flow rate, associated with a 20% increase in tubular diameter, led to increases in [Ca(2+)](i) in both cell types. Luminal perfusion of 100 microM UTP or ATP-gamma-S, in the absence of change in flow rate, caused a rapid and transient approximately fourfold increase in [Ca(2+)](i) in both cell types (P < 0.05). Luminal suramin, a nonspecific P2 receptor antagonist, blocked the nucleotide- but not flow-induced [Ca(2+)](i) transients. Luminal perfusion with a P2X (alpha,beta-methylene-ATP), P2X(7) (benzoyl-benzoyl-ATP), P2Y(1) (2-methylthio-ATP), or P2Y(4)/P2Y(6) (UDP) receptor agonist had no effect on [Ca(2+)](i). The nucleotide-induced [Ca(2+)](i) transients were inhibited by the inositol-1,4,5-triphosphate receptor blocker 2-aminoethoxydiphenyl borate, thapsigargin, which depletes internal Ca(2+) stores, luminal perfusion with a Ca(2+)-free perfusate, or the L-type Ca(2+) channel blocker nifedipine. These results suggest that luminal nucleotides activate apical P2Y(2) receptors in the CCD via pathways that require both internal Ca(2+) mobilization and extracellular Ca(2+) entry. The flow-induced rise in [Ca(2+)](i) is

iP-gp , a novel cell line with tight barrier function and expression of human P-glycoprotein (ABCB1) for drug screening

DEFF Research Database (Denmark)

Brodin, Birger; Ozgür, Burak; Saaby, Lasse

that new API's are evaluated with respect to P-gp interactions.  Aim : The aim of the present work was to validate the suitability of the newly developed iP-gp cell line for investigating P-gp interactions with human P-gp. Methods: IPEC-J2 MDR1 (iP-gp) cells were cultured on permeable supports for 17......Background : The efflux transporter P-glycoprotein (P-gp, product of the MDR1/ABCB1 gene) hinders uptake of drug compounds to the brain, limits intestinal uptake, is a cause of resistance to chemoterapeutics and a potential "site" for drug-drug interaction. Regulatory agencies therefore recommend.......04 +/- 0.01 µM in transport experiments including digoxin and rhodamine 123, respectively. Summary/Conclusion : The iP-gp cell line may become a useful screening tool for interactions between drug compounds and human P-gp....

Electron capture and excitation in collisions of O+(4S,2D,2P) with H2 molecules

International Nuclear Information System (INIS)

Pichl, Lukas; Li Yan; Liebermann, Heinz-Peter; Buenker, Robert J.; Kimura, Mineo

2004-01-01

Using an electronic-state close-coupling method, we treated the electron capture and excitation processes of O + ions both in ground state O + ( 4 S) and metastable states O +* ( 2 D) and O +* ( 2 P) in collisions with the H 2 molecule. In the ground-state projectile energy region considered (from 50 eV/amu to 10 keV/amu), the experimental data vary by orders of magnitude: our results smoothly connect to the data by Flesch and Ng [J. Chem. Phys. 94, 2372 (1991)] and Xu et al. [J. Phys. B 23, 1235 (1990)] at low energy and agree with Phaneuf et al. [Phys. Rev. A 17, 534 (1978)] in the high-energy region. The present values differ from Sieglaff et al. [Phys. Rev. A 59, 3538 (1999)] and Nutt et al. [J. Phys. B 12, L157 (1979)], especially in the energy region below 1 keV/amu. We provide the first calculated state-resolved cross sections of electron capture and target-projectile electronic excitations for the O + ( 4 S, 2 D, 2 P)-H 2 collision system

Interconnect rise time in superconducting integrating circuits

International Nuclear Information System (INIS)

Preis, D.; Shlager, K.

1988-01-01

The influence of resistive losses on the voltage rise time of an integrated-circuit interconnection is reported. A distribution-circuit model is used to present the interconnect. Numerous parametric curves are presented based on numerical evaluation of the exact analytical expression for the model's transient response. For the superconducting case in which the series resistance of the interconnect approaches zero, the step-response rise time is longer but signal strength increases significantly

Cattani, A.; Laville, J.-L.; Gaiger, L. I.; Hespanha, P. (orgs., Dicionário internacional da outra economia

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Pedro Ferrão

2012-10-01

Full Text Available Recensão de Pedrinho Guareschi O Dicionário, com 345 páginas, traz à discussão 60 temas relacionados fundamentalmente à Outra Economia (economia solidária, economia do trabalho, novo cooperativismo, empresas autogestionárias, mas com referências também à Sociologia, ao Direito, à Administração, à Psicologia e à Filosofia. Os autores pertencem principalmente a universidades do Brasil, Portugal, França e Argentina. Inicia com uma rápida introdução do Prof. Antonio David Cattani e uma nota acer...

FliO Regulation of FliP in the Formation of the Salmonella enterica Flagellum

OpenAIRE

Barker, Clive S.; Meshcheryakova, Irina V.; Kostyukova, Alla S.; Samatey, Fadel A.

2010-01-01

The type III secretion system of the Salmonella flagellum consists of 6 integral membrane proteins: FlhA, FlhB, FliO, FliP, FliQ, and FliR. However, in some other type III secretion systems, a homologue of FliO is apparently absent, suggesting it has a specialized role. Deleting the fliO gene from the chromosome of a motile strain of Salmonella resulted in a drastic decrease of motility. Incubation of the ΔfliO mutant strain in motility agar, gave rise to pseudorevertants containing extrageni...

Evidence for exotic hadron contributions to $\\Lambda_b^0 \\to J/\\psi p \\pi^-$ decays

CERN Document Server

Aaij, Roel; Adeva, Bernardo; Adinolfi, Marco; Ajaltouni, Ziad; Akar, Simon; Albrecht, Johannes; Alessio, Federico; Alexander, Michael; Ali, Suvayu; Alkhazov, Georgy; Alvarez Cartelle, Paula; Alves Jr, Antonio Augusto; Amato, Sandra; Amerio, Silvia; Amhis, Yasmine; An, Liupan; Anderlini, Lucio; Andreassi, Guido; Andreotti, Mirco; Andrews, Jason; Appleby, Robert; Aquines Gutierrez, Osvaldo; Archilli, Flavio; d'Argent, Philippe; Arnau Romeu, Joan; Artamonov, Alexander; Artuso, Marina; Aslanides, Elie; Auriemma, Giulio; Baalouch, Marouen; Bachmann, Sebastian; Back, John; Badalov, Alexey; Baesso, Clarissa; Baldini, Wander; Barlow, Roger; Barschel, Colin; Barsuk, Sergey; Barter, William; Batozskaya, Varvara; Battista, Vincenzo; Bay, Aurelio; Beaucourt, Leo; Beddow, John; Bedeschi, Franco; Bediaga, Ignacio; Bel, Lennaert; Bellee, Violaine; Belloli, Nicoletta; Belous, Konstantin; Belyaev, Ivan; Ben-Haim, Eli; Bencivenni, Giovanni; Benson, Sean; Benton, Jack; Berezhnoy, Alexander; Bernet, Roland; Bertolin, Alessandro; Bettler, Marc-Olivier; van Beuzekom, Martinus; Bifani, Simone; Billoir, Pierre; Bird, Thomas; Birnkraut, Alex; Bitadze, Alexander; Bizzeti, Andrea; Blake, Thomas; Blanc, Frederic; Blouw, Johan; Blusk, Steven; Bocci, Valerio; Boettcher, Thomas; Bondar, Alexander; Bondar, Nikolay; Bonivento, Walter; Borghi, Silvia; Borisyak, Maxim; Borsato, Martino; Bossu, Francesco; Boubdir, Meriem; Bowcock, Themistocles; Bowen, Espen Eie; Bozzi, Concezio; Braun, Svende; Britsch, Markward; Britton, Thomas; Brodzicka, Jolanta; Buchanan, Emma; Burr, Christopher; Bursche, Albert; Buytaert, Jan; Cadeddu, Sandro; Calabrese, Roberto; Calvi, Marta; Calvo Gomez, Miriam; Campana, Pierluigi; Campora Perez, Daniel; Capriotti, Lorenzo; Carbone, Angelo; Carboni, Giovanni; Cardinale, Roberta; Cardini, Alessandro; Carniti, Paolo; Carson, Laurence; Carvalho Akiba, Kazuyoshi; Casse, Gianluigi; Cassina, Lorenzo; Castillo Garcia, Lucia; Cattaneo, Marco; Cauet, Christophe; Cavallero, Giovanni; Cenci, Riccardo; Charles, Matthew; Charpentier, Philippe; Chatzikonstantinidis, Georgios; Chefdeville, Maximilien; Chen, Shanzhen; Cheung, Shu-Faye; Chobanova, Veronika; Chrzaszcz, Marcin; Cid Vidal, Xabier; Ciezarek, Gregory; Clarke, Peter; Clemencic, Marco; Cliff, Harry; Closier, Joel; Coco, Victor; Cogan, Julien; Cogneras, Eric; Cogoni, Violetta; Cojocariu, Lucian; Collazuol, Gianmaria; Collins, Paula; Comerma-Montells, Albert; Contu, Andrea; Cook, Andrew; Coquereau, Samuel; Corti, Gloria; Corvo, Marco; Costa Sobral, Cayo Mar; Couturier, Benjamin; Cowan, Greig; Craik, Daniel Charles; Crocombe, Andrew; Cruz Torres, Melissa Maria; Cunliffe, Samuel; Currie, Robert; D'Ambrosio, Carmelo; Dall'Occo, Elena; Dalseno, Jeremy; David, Pieter; Davis, Adam; De Aguiar Francisco, Oscar; De Bruyn, Kristof; De Capua, Stefano; De Cian, Michel; De Miranda, Jussara; De Paula, Leandro; De Simone, Patrizia; Dean, Cameron Thomas; Decamp, Daniel; Deckenhoff, Mirko; Del Buono, Luigi; Demmer, Moritz; Derkach, Denis; Deschamps, Olivier; Dettori, Francesco; Dey, Biplab; Di Canto, Angelo; Dijkstra, Hans; Dordei, Francesca; Dorigo, Mirco; Dosil Suárez, Alvaro; Dovbnya, Anatoliy; Dreimanis, Karlis; Dufour, Laurent; Dujany, Giulio; Dungs, Kevin; Durante, Paolo; Dzhelyadin, Rustem; Dziurda, Agnieszka; Dzyuba, Alexey; Déléage, Nicolas; Easo, Sajan; Egede, Ulrik; Egorychev, Victor; Eidelman, Semen; Eisenhardt, Stephan; Eitschberger, Ulrich; Ekelhof, Robert; Eklund, Lars; Elsasser, Christian; Ely, Scott; Esen, Sevda; Evans, Hannah Mary; Evans, Timothy; Falabella, Antonio; Farley, Nathanael; Farry, Stephen; Fay, Robert; Ferguson, Dianne; Fernandez Albor, Victor; Ferrari, Fabio; Ferreira Rodrigues, Fernando; Ferro-Luzzi, Massimiliano; Filippov, Sergey; Fiore, Marco; Fiorini, Massimiliano; Firlej, Miroslaw; Fitzpatrick, Conor; Fiutowski, Tomasz; Fleuret, Frederic; Fohl, Klaus; Fontana, Marianna; Fontanelli, Flavio; Forshaw, Dean Charles; Forty, Roger; Frank, Markus; Frei, Christoph; Frosini, Maddalena; Fu, Jinlin; Furfaro, Emiliano; Färber, Christian; Gallas Torreira, Abraham; Galli, Domenico; Gallorini, Stefano; Gambetta, Silvia; Gandelman, Miriam; Gandini, Paolo; Gao, Yuanning; García Pardiñas, Julián; Garra Tico, Jordi; Garrido, Lluis; Garsed, Philip John; Gascon, David; Gaspar, Clara; Gavardi, Laura; Gazzoni, Giulio; Gerick, David; Gersabeck, Evelina; Gersabeck, Marco; Gershon, Timothy; Ghez, Philippe; Gianì, Sebastiana; Gibson, Valerie; Girard, Olivier Göran; Giubega, Lavinia-Helena; Gizdov, Konstantin; Gligorov, V.V.; Golubkov, Dmitry; Golutvin, Andrey; Gomes, Alvaro; Gorelov, Igor Vladimirovich; Gotti, Claudio; Grabalosa Gándara, Marc; Graciani Diaz, Ricardo; Granado Cardoso, Luis Alberto; Graugés, Eugeni; Graverini, Elena; Graziani, Giacomo; Grecu, Alexandru; Griffith, Peter; Grillo, Lucia; Gruberg Cazon, Barak Raimond; Grünberg, Oliver; Gushchin, Evgeny; Guz, Yury; Gys, Thierry; Göbel, Carla; Hadavizadeh, Thomas; Hadjivasiliou, Christos; Haefeli, Guido; Haen, Christophe; Haines, Susan; Hall, Samuel; Hamilton, Brian; Han, Xiaoxue; Hansmann-Menzemer, Stephanie; Harnew, Neville; Harnew, Samuel; Harrison, Jonathan; He, Jibo; Head, Timothy; Heister, Arno; Hennessy, Karol; Henrard, Pierre; Henry, Louis; Hernando Morata, Jose Angel; van Herwijnen, Eric; Heß, Miriam; Hicheur, Adlène; Hill, Donal; Hombach, Christoph; Hulsbergen, Wouter; Humair, Thibaud; Hushchyn, Mikhail; Hussain, Nazim; Hutchcroft, David; Idzik, Marek; Ilten, Philip; Jacobsson, Richard; Jaeger, Andreas; Jalocha, Pawel; Jans, Eddy; Jawahery, Abolhassan; John, Malcolm; Johnson, Daniel; Jones, Christopher; Joram, Christian; Jost, Beat; Jurik, Nathan; Kandybei, Sergii; Kanso, Walaa; Karacson, Matthias; Kariuki, James Mwangi; Karodia, Sarah; Kecke, Matthieu; Kelsey, Matthew; Kenyon, Ian; Kenzie, Matthew; Ketel, Tjeerd; Khairullin, Egor; Khanji, Basem; Khurewathanakul, Chitsanu; Kirn, Thomas; Klaver, Suzanne; Klimaszewski, Konrad; Koliiev, Serhii; Kolpin, Michael; Komarov, Ilya; Koopman, Rose; Koppenburg, Patrick; Kozachuk, Anastasiia; Kozeiha, Mohamad; Kravchuk, Leonid; Kreplin, Katharina; Kreps, Michal; Krokovny, Pavel; Kruse, Florian; Krzemien, Wojciech; Kucewicz, Wojciech; Kucharczyk, Marcin; Kudryavtsev, Vasily; Kuonen, Axel Kevin; Kurek, Krzysztof; Kvaratskheliya, Tengiz; Lacarrere, Daniel; Lafferty, George; Lai, Adriano; Lambert, Dean; Lanfranchi, Gaia; Langenbruch, Christoph; Langhans, Benedikt; Latham, Thomas; Lazzeroni, Cristina; Le Gac, Renaud; van Leerdam, Jeroen; Lees, Jean-Pierre; Leflat, Alexander; Lefrançois, Jacques; Lefèvre, Regis; Lemaitre, Florian; Lemos Cid, Edgar; Leroy, Olivier; Lesiak, Tadeusz; Leverington, Blake; Li, Yiming; Likhomanenko, Tatiana; Lindner, Rolf; Linn, Christian; Lionetto, Federica; Liu, Bo; Liu, Xuesong; Loh, David; Longstaff, Iain; Lopes, Jose; Lucchesi, Donatella; Lucio Martinez, Miriam; Luo, Haofei; Lupato, Anna; Luppi, Eleonora; Lupton, Oliver; Lusiani, Alberto; Lyu, Xiao-Rui; Machefert, Frederic; Maciuc, Florin; Maev, Oleg; Maguire, Kevin; Malde, Sneha; Malinin, Alexander; Maltsev, Timofei; Manca, Giulia; Mancinelli, Giampiero; Manning, Peter Michael; Maratas, Jan; Marchand, Jean François; Marconi, Umberto; Marin Benito, Carla; Marino, Pietro; Marks, Jörg; Martellotti, Giuseppe; Martin, Morgan; Martinelli, Maurizio; Martinez Santos, Diego; Martinez Vidal, Fernando; Martins Tostes, Danielle; Massacrier, Laure Marie; Massafferri, André; Matev, Rosen; Mathad, Abhijit; Mathe, Zoltan; Matteuzzi, Clara; Mauri, Andrea; Maurin, Brice; Mazurov, Alexander; McCann, Michael; McCarthy, James; McNab, Andrew; McNulty, Ronan; Meadows, Brian; Meier, Frank; Meissner, Marco; Melnychuk, Dmytro; Merk, Marcel; Michielin, Emanuele; Milanes, Diego Alejandro; Minard, Marie-Noelle; Mitzel, Dominik Stefan; Molina Rodriguez, Josue; Monroy, Ignacio Alberto; Monteil, Stephane; Morandin, Mauro; Morawski, Piotr; Mordà, Alessandro; Morello, Michael Joseph; Moron, Jakub; Morris, Adam Benjamin; Mountain, Raymond; Muheim, Franz; Mulder, Mick; Mussini, Manuel; Müller, Dominik; Müller, Janine; Müller, Katharina; Müller, Vanessa; Naik, Paras; Nakada, Tatsuya; Nandakumar, Raja; Nandi, Anita; Nasteva, Irina; Needham, Matthew; Neri, Nicola; Neubert, Sebastian; Neufeld, Niko; Neuner, Max; Nguyen, Anh Duc; Nguyen-Mau, Chung; Niess, Valentin; Nieswand, Simon; Niet, Ramon; Nikitin, Nikolay; Nikodem, Thomas; Novoselov, Alexey; O'Hanlon, Daniel Patrick; Oblakowska-Mucha, Agnieszka; Obraztsov, Vladimir; Ogilvy, Stephen; Okhrimenko, Oleksandr; Oldeman, Rudolf; Onderwater, Gerco; Otalora Goicochea, Juan Martin; Otto, Adam; Owen, Patrick; Oyanguren, Maria Aranzazu; Pais, Preema Rennee; Palano, Antimo; Palombo, Fernando; Palutan, Matteo; Panman, Jacob; Papanestis, Antonios; Pappagallo, Marco; Pappalardo, Luciano; Pappenheimer, Cheryl; Parker, William; Parkes, Christopher; Passaleva, Giovanni; Patel, Girish; Patel, Mitesh; Patrignani, Claudia; Pearce, Alex; Pellegrino, Antonio; Penso, Gianni; Pepe Altarelli, Monica; Perazzini, Stefano; Perret, Pascal; Pescatore, Luca; Petridis, Konstantinos; Petrolini, Alessandro; Petrov, Aleksandr; Petruzzo, Marco; Picatoste Olloqui, Eduardo; Pietrzyk, Boleslaw; Pikies, Malgorzata; Pinci, Davide; Pistone, Alessandro; Piucci, Alessio; Playfer, Stephen; Plo Casasus, Maximo; Poikela, Tuomas; Polci, Francesco; Poluektov, Anton; Polyakov, Ivan; Polycarpo, Erica; Pomery, Gabriela Johanna; Popov, Alexander; Popov, Dmitry; Popovici, Bogdan; Potterat, Cédric; Price, Eugenia; Price, Joseph David; Prisciandaro, Jessica; Pritchard, Adrian; Prouve, Claire; Pugatch, Valery; Puig Navarro, Albert; Punzi, Giovanni; Qian, Wenbin; Quagliani, Renato; Rachwal, Bartolomiej; Rademacker, Jonas; Rama, Matteo; Ramos Pernas, Miguel; Rangel, Murilo; Raniuk, Iurii; Raven, Gerhard; Redi, Federico; Reichert, Stefanie; dos Reis, Alberto; Remon Alepuz, Clara; Renaudin, Victor; Ricciardi, Stefania; Richards, Sophie; Rihl, Mariana; Rinnert, Kurt; Rives Molina, Vicente; Robbe, Patrick; Rodrigues, Ana Barbara; Rodrigues, Eduardo; Rodriguez Lopez, Jairo Alexis; Rodriguez Perez, Pablo; Rogozhnikov, Alexey; Roiser, Stefan; Romanovskiy, Vladimir; Romero Vidal, Antonio; Ronayne, John William; Rotondo, Marcello; Ruf, Thomas; Ruiz Valls, Pablo; Saborido Silva, Juan Jose; Sadykhov, Elnur; Sagidova, Naylya; Saitta, Biagio; Salustino Guimaraes, Valdir; Sanchez Mayordomo, Carlos; Sanmartin Sedes, Brais; Santacesaria, Roberta; Santamarina Rios, Cibran; Santimaria, Marco; Santovetti, Emanuele; Sarti, Alessio; Satriano, Celestina; Satta, Alessia; Saunders, Daniel Martin; Savrina, Darya; Schael, Stefan; Schiller, Manuel; Schindler, Heinrich; Schlupp, Maximilian; Schmelling, Michael; Schmelzer, Timon; Schmidt, Burkhard; Schneider, Olivier; Schopper, Andreas; Schubiger, Maxime; Schune, Marie Helene; Schwemmer, Rainer; Sciascia, Barbara; Sciubba, Adalberto; Semennikov, Alexander; Sergi, Antonino; Serra, Nicola; Serrano, Justine; Sestini, Lorenzo; Seyfert, Paul; Shapkin, Mikhail; Shapoval, Illya; Shcheglov, Yury; Shears, Tara; Shekhtman, Lev; Shevchenko, Vladimir; Shires, Alexander; Siddi, Benedetto Gianluca; Silva Coutinho, Rafael; Silva de Oliveira, Luiz Gustavo; Simi, Gabriele; Sirendi, Marek; Skidmore, Nicola; Skwarnicki, Tomasz; Smith, Eluned; Smith, Iwan Thomas; Smith, Jackson; Smith, Mark; Snoek, Hella; Sokoloff, Michael; Soler, Paul; Souza, Daniel; Souza De Paula, Bruno; Spaan, Bernhard; Spradlin, Patrick; Sridharan, Srikanth; Stagni, Federico; Stahl, Marian; Stahl, Sascha; Stefko, Pavol; Stefkova, Slavorima; Steinkamp, Olaf; Stenyakin, Oleg; Stevenson, Scott; Stoica, Sabin; Stone, Sheldon; Storaci, Barbara; Stracka, Simone; Straticiuc, Mihai; Straumann, Ulrich; Sun, Liang; Sutcliffe, William; Swientek, Krzysztof; Syropoulos, Vasileios; Szczekowski, Marek; Szumlak, Tomasz; T'Jampens, Stephane; Tayduganov, Andrey; Tekampe, Tobias; Tellarini, Giulia; Teubert, Frederic; Thomas, Christopher; Thomas, Eric; van Tilburg, Jeroen; Tisserand, Vincent; Tobin, Mark; Tolk, Siim; Tomassetti, Luca; Tonelli, Diego; Topp-Joergensen, Stig; Toriello, Francis; Tournefier, Edwige; Tourneur, Stephane; Trabelsi, Karim; Traill, Murdo; Tran, Minh Tâm; Tresch, Marco; Trisovic, Ana; Tsaregorodtsev, Andrei; Tsopelas, Panagiotis; Tully, Alison; Tuning, Niels; Ukleja, Artur; Ustyuzhanin, Andrey; Uwer, Ulrich; Vacca, Claudia; Vagnoni, Vincenzo; Valat, Sebastien; Valenti, Giovanni; Vallier, Alexis; Vazquez Gomez, Ricardo; Vazquez Regueiro, Pablo; Vecchi, Stefania; van Veghel, Maarten; Velthuis, Jaap; Veltri, Michele; Veneziano, Giovanni; Venkateswaran, Aravindhan; Vesterinen, Mika; Viaud, Benoit; Vieira, Daniel; Vieites Diaz, Maria; Vilasis-Cardona, Xavier; Volkov, Vladimir; Vollhardt, Achim; Voneki, Balazs; Voong, David; Vorobyev, Alexey; Vorobyev, Vitaly; Voß, Christian; de Vries, Jacco; Vázquez Sierra, Carlos; Waldi, Roland; Wallace, Charlotte; Wallace, Ronan; Walsh, John; Wang, Jianchun; Ward, David; Wark, Heather Mckenzie; Watson, Nigel; Websdale, David; Weiden, Andreas; Whitehead, Mark; Wicht, Jean; Wilkinson, Guy; Wilkinson, Michael; Williams, Mark Richard James; Williams, Matthew; Williams, Mike; Williams, Timothy; Wilson, Fergus; Wimberley, Jack; Wishahi, Julian; Wislicki, Wojciech; Witek, Mariusz; Wormser, Guy; Wotton, Stephen; Wraight, Kenneth; Wright, Simon; Wyllie, Kenneth; Xie, Yuehong; Xu, Zhirui; Yang, Zhenwei; Yin, Hang; Yu, Jiesheng; Yuan, Xuhao; Yushchenko, Oleg; Zangoli, Maria; Zarebski, Kristian Alexander; Zavertyaev, Mikhail; Zhang, Liming; Zhang, Yanxi; Zhang, Yu; Zhelezov, Alexey; Zheng, Yangheng; Zhokhov, Anatoly; Zhukov, Valery; Zucchelli, Stefano

2016-08-18

A full amplitude analysis of $\\Lambda_b^0 \\to J/\\psi p \\pi^-$ decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV $pp$ collisions, corresponding to an integrated luminosity of 3 fb$^{-1}$. A significantly better description of the data is achieved when, in addition to the previously observed nucleon excitations $N\\to p\\pi^-$, either the $P_c(4380)^+$ and $P_c(4450)^+\\to J/\\psi p$ states, previously observed in $\\Lambda_b^0 \\to J/\\psi p K^-$ decays, or the $Z_c(4200)^-\\to J/\\psi \\pi^-$ state, previously reported in $B^0 \\to J/\\psi K^+ \\pi^-$ decays, or all three, are included in the amplitude models. The data support a model containing all three exotic states, with a significance of more than three standard deviations. Within uncertainties, the data are consistent with the $P_c(4380)^+$ and $P_c(4450)^+$ production rates expected from their previous observation taking account of Cabibbo suppression.

The Studsvik power transient programs Demo-Ramp II and Trans-Ramp I

International Nuclear Information System (INIS)

Bergenlid, U.; Lysell, G.; Mogard, H.; Roennberg, G.

1984-01-01

The Studsvik Demo-Ramp II och Trans-Ramp I are internationally sponsored research programs. The main objectives are similar in both programs: to study the effects on the PCI/SCC failure process of short time power transients, above the failure threshold where cladding failure (FP leakage) is expected to occur after a sufficient hold time. Demo-Ramp II is completed, whereas, at present, Trans-Ramp I is in progress. Test fuel rods of standard BWR design are used. The fuel rods have been base-irradiated in a power reactor (burn-up in the range 18 to 29 MWd/kg U) and subsequently ramp tested in the R2 reactor. Extensive examinations of the rods have been performed. In the Demo-Ramp II program a large number of incipient cladding cracks were observed to be formed more rapidly than expected, based on previous knowledge. It was possible to operate one rod for a very short time above the failure threshold without SCC crack formation. One objective of the Trans-Ramp I program is to define more closely the power-time region above the failure threshold where the rods remain intact after power transients. (author)

Crystallization-mediated amorphous Cu_xO (x = 1, 2)/crystalline CuI p–p type heterojunctions with visible light enhanced and ultraviolet light restrained photocatalytic dye degradation performance

International Nuclear Information System (INIS)

Wang, Hongli; Cai, Yun; Zhou, Jian; Fang, Jun; Yang, Yang

2017-01-01

Highlights: • Cu_xO(x = 1, 2)/CuI p–p type heterojunctions were facilely constructed via crystallization-mediated approaches. • Cu_xO/CuI heterojunctions exhibit effective visible-light-driven photocatalytic activity for dye degradation. • The Cu_xO/CuI interface can enhance the spatial separation of the photogenerated electron–hole pairs. • This work represents a critical step for mass production of functional semiconductor heterojunctions in a mild manner. - Abstract: We report simple and cost-effective fabrication of amorphous Cu_xO (x = 1, 2)/crystalline CuI p–p type heterojunctions based on crystallization-mediated approaches including antisolvent crystallization and crystal reconstruction. Starting from CuI acetonitrile solution, large crystals in commercial CuI can be easily converted to aggregates consisting of small particles by the crystallization processes while the spontaneous oxidation of CuI by atmospheric/dissolved oxygen can induce the formation of trace Cu_xO on CuI surface. As a proof of concept, the as-fabricated Cu_xO/CuI heterojunctions exhibit effective photocatalytic activity towards the degradation of methyl blue and other organic pollutants under visible light irradiation, although the wide band-gap semiconductor CuI is insensible to visible light. Unexpectedly, the Cu_xO/CuI heterojunctions exhibit restrained photocatalytic activity when ultraviolet light is applied in addition to the visible. It is suggested that the Cu_xO/CuI interface can enhance the spatial separation of the electron–hole pairs with the excitation of Cu_xO under visible light and prolong the lifetime of photogenerated charges with high redox ability. The present work represents a critically important step in advancing the crystallization technique for potential mass production of semiconductor heterojunctions in a mild manner.

Method for the preparation of n-i-p type radiation detector from silicon

International Nuclear Information System (INIS)

Keleti, J.; Toeroek, T.; Lukacs, J.; Molnar, I.

1978-01-01

The patent describes a procedure for the preparation of n-i-p type silicon radiation detectors. The aim was to provide an adaquate procedure for the production of α, β, γ-detectors from silicon available on the market, either p-type single crystal silicon characterised by its boron level. The procedure and the 9 claims are illustrated by two examples. (Sz.J.)

Looking for DPS patterns using $J / \\psi$ and high $p_{T}$ tracklets

CERN Document Server

Thabt, Ahmed Mustafa Aboelfadl; Stocco, Diego; Palni, Prabhakar; CERN. Geneva. Department

2017-01-01

We present a standalone analysis of p-p collisions at $ \\sqrt{s} = 5.02 $ TeV for $ J/\\psi $ decaying into dimuons and also a feasibility study of $ p_{T} $ correlations with different observables of tracklets in the central barrel. In the latter analysis, it was found that both $ \\delta \\phi $ and $ \\chi^{2} $ (dist) could be used efficiently to select high $ p_{T} $ tracklets. These analyses are then implemented in studying the Double Parton Scattering with $ J/\\psi $ and two jets to estimate the effective cross section parameter.

Solution-processed n-ZnO nanorod/p-Co_3O_4 nanoplate heterojunction light-emitting diode

International Nuclear Information System (INIS)

Kim, Jong-Woo; Lee, Su Jeong; Biswas, Pranab; Lee, Tae Il; Myoung, Jae-Min

2017-01-01

Highlights: • The n-ZnO nanorods were epitaxially grown on p-Co_3O_4 nanoplates. • The heteroepitaxial p-n junction was fabricated by using hydrothermal process. • The LEDs emitted reddish-orange and violet light related to ZnO point defects. • The Co_3O_4 nanoplates function as a hole injection layer. • Junction between 1D NRs and 2D NPs provides a new approach to design nanostructures. - Abstract: A heterojunction light-emitting diode (LED) based on p-type cobalt oxide (Co_3O_4) nanoplates (NPs)/n-type zinc oxide (ZnO) nanorods (NRs) is demonstrated. Using a low-temperature aqueous solution process, the n-type ZnO NRs were epitaxially grown on Co_3O_4 NPs which were two-dimensionally assembled by a modified Langmuir-Blodgett process. The heterojunction LEDs exhibited a typical rectifying behavior with a turn-on voltage of about 2 V and emitted not only reddish-orange light at 610 nm but also violet light at about 400 nm. From the comparative analyses of electroluminescence and photoluminescence, it was determined that the reddish-orange light emission was related to the electronic transitions from zinc interstitials (Zn_i) to oxygen interstitials (O_i) or conduction-band minimum (CBM) to oxygen vacancies (V_O), and the violet light emission was attribute to the transition from CBM to valence-band maximum (VBM) or Zn_i to zinc vacancies (V_Z_n).

THYDE-P, PWR LOCA Thermohydraulic Transient Analysis

International Nuclear Information System (INIS)

Asahi, Yoshiro

2001-01-01

1 - Description of problem or function: THYDE-P1 analyzes the behaviour of LWR plants in response to various disturbances, including the thermal hydraulic transient following a break of the primary coolant pipe system, generally referred to as a loss-of-coolant-accident (LOCA). LOCA can be considered as the most critical condition for testing the methods and models for plant dynamics, since thermal hydraulic conditions in the system change drastically during the transient. THYDE-P is capable of a complete LOCA calculation from start to complete reflooding of the core by subcooled water. The program performs steady-state adjustment, which is complete in the sense that the steady state obtained is a set of exact solutions of all the transient equations without time derivatives, not only for plant hydraulics but also for all the other phenomena in the simulation of a PWR plant. THYDE-P2 contains among others the following improvements over THYDE-P1: (1) not only the mass and momentum equations but also the energy equation are included in the non-linear implicit scheme; (2) the valve model is implemented; (3) the relaxation equation for void fraction is theoretically derived; (4) vectorized programming is implemented; (5) both EM (evaluation mode) and BE (best estimate) calculations are possible. THYDE-W is an improved version of THYDE-P2 and contains the following additional features: (a) analysis of multiple number of disjoint loops is possible; (b) a control system simulation model is included; (c) the trip model has been improved; (d) heavy water is allowed as coolant; (e) the effect of drift flux is accounted for in the steady state calculation; (f) boron transport is included; (g) to obtain steady state loop heat balance, the option of adjusting the enthalpy distribution is prepared included in addition to that of adjusting heat exchanger areas; (h) to obtain steady state pressure distribution, three other options are prepared in addition to the original ones

O conceito de pós-modernidade em Lyotard e a possibilidade da influência nietzschiana Felipe Szyszka Karasek

Directory of Open Access Journals (Sweden)

Karasek, Felipe Szyszka

2010-01-01

Full Text Available O principal objetivo deste estudo é apresentar a tese que os elementos constituintes da reflexão de Lyotard sobre a pós-modernidade já estavam presentes nas suspeitas e na filosofia de Friedrich Nietzsche. Realizando um estudo genealógico sobre a crítica de Nietzsche ao socratismo, pretendemos demonstrar que a desconfiança de verdades já fazia parte do perspectivismo nietzschiano, bem como a crítica às legitimações metafísicas. Pretendemos, dessa maneira, apresentar a possibilidade da influência da filosofia nietzschiana na formação do pensamento de Lyotard sobre o conceito de pós-moderno

Scanning ion deep level transient spectroscopy: I. Theory

International Nuclear Information System (INIS)

Laird, J S; Jagadish, C; Jamieson, D N; Legge, G J F

2006-01-01

Theoretical aspects of a new technique for the MeV ion microbeam are described in detail for the first time. The basis of the technique, termed scanning ion deep level transient spectroscopy (SIDLTS), is the imaging of defect distributions within semiconductor devices. The principles of SIDLTS are similar to those behind other deep level transient spectroscopy (DLTS) techniques with the main difference stemming from the injection of carriers into traps using the localized energy-loss of a focused MeV ion beam. Energy-loss of an MeV ion generates an electron-hole pair plasma, providing the equivalent of a DLTS trap filling pulse with a duration which depends on space-charge screening of the applied electric field and ambipolar erosion of the plasma for short ranging ions. Some nanoseconds later, the detrapping current transient is monitored as a charge transient. Scanning the beam in conjunction with transient analysis allows the imaging of defect levels. As with DLTS, the temperature dependence of the transient can be used to extract trap activation levels. In this, the first of a two-part paper, we introduce the various stages of corner capture and derive a simple expression for the observed charge transient. The second paper will illustrate the technique on a MeV ion implanted Au-Si Schottky junction

Study on crystallization kinetics and phase evolution in Li2O-Al2O3-GeO2-P2O5 glass-ceramics system

Science.gov (United States)

Das, Anurup; Dixit, Anupam; Goswami, Madhumita; Mythili, R.; Hajra, R. N.

2018-04-01

To address the safety issues related to liquid electrolyte and improve the battery performance, Solid State Electrolytes (SSEs) are now in frontier area of research interest. We report here synthesis of Li-SSE based on Li2O-Al2O3-GeO2-P2O5 (LAGP) system with NASICON structure. Glass sample with nominal composition Li1.5Al0.5Ge1.5P2.5Si0.5O12 was prepared by melt-quenching technique. Non-isothermal crystallization kinetics was studied using DSC and activation energy of crystallisation was calculated to be ˜ 246 kJ/mol using Kissinger's equation. XRD of heat treated samples show the formation of required LiGe2(PO4)3 phase along with other minor phases. Compositional analysis using SEM-EDX confirms enrichment of Ge and Si along the grain boundaries.

Spectroscopic constants and the potential energy curve of the iodine weakly bound 0+g state correlating with the I(2P1/2) + I(2P1/2) dissociation limit

International Nuclear Information System (INIS)

Akopyan, M E; Baturo, V V; Lukashov, S S; Poretsky, S A; Pravilov, A M

2013-01-01

The stepwise three-step three-colour aser excitation scheme and rotational as well as rovibrational energy transfer processes in the 0 + g state induced by collisions with He and Ar atoms are used for determination of rovibronic level energies of the weakly bound 0 + g state correlating with the I( 2 P 1/2 ) + I( 2 P 1/2 ) dissociation limit. Dunham coefficients of the state, Y i0 (i = 0–3), Y i1 (i = 0–3) and Y 02 for the v 0 g + = 0–16 and J 0 g + ≈ 14–135 ranges as well as the dissociation energy of the state, D e , and equilibrium I–I distance of the state, R e , are determined. The potential energy curve of the state constructed using these constants is also reported. (paper)

Deep-level transient spectroscopy of TiO2/CuInS2 heterojunctions

NARCIS (Netherlands)

Nanu, M.; Boulch, F.; Schoonman, J.; Goossens, A.

2005-01-01

Deep-level transient spectroscopy (DLTS) has been used to measure the concentration and energy position of deep electronic states in CuInS2. Flat TiO2?CuInS2 heterojunctions as well as TiO2-CuInS2 nanocomposites have been investigated. Subband-gap electronic states in CuInS2 films are mostly due to

Mapping of epitopes on Poa p I and Lol p I allergens with monoclonal antibodies.

Science.gov (United States)

Lin, Z W; Ekramoddoullah, A K; Jaggi, K S; Dzuba-Fischer, J; Rector, E; Kisil, F T

1990-01-01

Allergen Poa p I isolated from the dialysed aqueous extract of Kentucky blue grass pollen by affinity chromatography with an anti-Lol p I murine monoclonal antibody (MAb) 290A-167 was previously shown to consist of a 35.8-kilodalton (kD) component with a pI of 6.4, designated as Poa p Ia, and a 33-kD component with a pI of 9.1, designated as Poa p Ib. The present study reports on the comparative antigenic analyses of these two components, using MAbs produced separately against Poa p I and Lol p I. Thus, anti-Poa p I MAbs 60 and 61 and anti-Lol p I MAb 290A-167 recognized Poa p Ia and Poa p Ib whereas anti-Poa p I MAbs 62, 63 and 64 and anti-Lol p I MAb 348A-6 recognized only Poa p Ia. The specificities of the MAbs were further resolved by comparing their respective abilities to inhibit the binding of 125I-Poa p I or 125I-Lol p I to the different MAbs prepared in the form of solid phase. These studies revealed that at least 4 distinct epitopes (designated as E1, E2, E3 and E4) were shared by both Poa p I and Lol p I. All 4 epitopes were present on Poa p Ia whereas only E1 and E3 were detected on Poa p Ib. E1 was recognized by MAbs 60 and 61, E2 by MAbs 62, 63 and 64, E3 by MAb 290A-167 and E4 by MAb 348A-6.(ABSTRACT TRUNCATED AT 250 WORDS)

Continuous brightening of IGR J17473-2721

DEFF Research Database (Denmark)

Baldovin Saavedra, C.; Chenevez, Jérôme; Kuulkers, E.

2008-01-01

Renewed accretion activity has been reported by Swift/XRT (ATel #1459), XTE/PCA (ATel #1460) and INTEGRAL/IBIS/ISGRI (ATel #1461) from the RXTE transient IGR J17473-2721 (= XTE J1747-274; ATels #467, #498) after the detection of an X-ray burst by SuperAGILE (ATel #1445). From the on-going Galactic...... bulge monitoring program (see ATels #1385, #1461) we report that the transient continues to brighten as seen with IBIS/ISGRI and JEM-X....

Infrared studies of the evolution of the C{sub i}O{sub i}(Si{sub I}) defect in irradiated Si upon isothermal anneals

Energy Technology Data Exchange (ETDEWEB)

Angeletos, T.; Londos, C. A., E-mail: hlontos@phys.uoa.gr [University of Athens, Solid State Physics Section, Panepistimiopolis Zografos, Athens 157 84 (Greece); Chroneos, A., E-mail: alexander.chroneos@imperial.ac.uk [Faculty of Engineering, Environment and Computing, Coventry University, Priory Street, Coventry CV1 5FB (United Kingdom); Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom)

2016-03-28

Carbon-oxygen-self-interstitial complexes were investigated in silicon by means of Fourier transform infrared spectroscopy. Upon irradiation, the C{sub i}O{sub i} defect (C{sub 3}) forms which for high doses attract self-interstitials (Si{sub I}s) leading to the formation of the C{sub i}O{sub i}(Si{sub I}) defect (C{sub 4}) with two well-known related bands at 939.6 and 1024 cm{sup −1}. The bands are detectable in the spectra both in room temperature (RT) and liquid helium (LH) temperature. Upon annealing at 150 °C, these bands were transformed to three bands at 725, 952, and 973 cm{sup −1}, detectable only at LH temperatures. Upon annealing at 220 °C, these bands were transformed to three bands at 951, 969.5, and 977 cm{sup −1}, detectable both at RT and LH temperatures. Annealing at 280 °C resulted in the transformation of these bands to two new bands at 973 and 1024 cm{sup −1}. The latter bands disappear from the spectra upon annealing at 315 °C without the emergence of other bands in the spectra. Considering reaction kinetics and defect metastability, we developed a model to describe the experimental results. Annealing at 150 °C triggers the capturing of Si{sub I}s by the C{sub 4} defect leading to the formation of the C{sub i}O{sub i}(Si{sub I}){sub 2} complex. The latter structure appears to be bistable: measuring at LH, the defect is in configuration C{sub i}O{sub i}(Si{sub I}){sub 2} giving rise to the bands at 725, 952, and 973 cm{sup −1}, whereas on measurements at RT, the defect converts to another configuration C{sub i}O{sub i}(Si{sub I}){sub 2}{sup *} without detectable bands in the spectra. Possible structures of the two C{sub i}O{sub i}(Si{sub I}){sub 2} configurations are considered and discussed. Upon annealing at 220 °C, additional Si{sub I}s are captured by the C{sub i}O{sub i}(Si{sub I}){sub 2} defect leading to the formation of the C{sub i}O{sub i}(Si{sub I}){sub 3} complex, which in turn on annealing at

Trabalho de jovens estudantes de uma escola pública: fortalecimento ou desgaste? Trabajo de jóvenes estudiantes de una escuela pública: fortalecimiento o desgaste? Work of young students of a public school: strengthening or weakening?

Directory of Open Access Journals (Sweden)

Sheila Aparecida Ferreira Lachtim

2009-04-01

Full Text Available O objetivo desta pesquisa foi reconhecer os potenciais de desgaste e de fortalecimento de jovens trabalhadores que estudam em uma escola pública de um município da RMSP. Trata-se de um estudo qualitativo, que entrevistou 19 estudantes, de 16 a 20 anos do período noturno. Os principais potenciais de desgaste foram: longa jornada de trabalho, excesso de responsabilidade, falta de estabilidade e trabalho essencialmente manual, fragmentado e repetitivo. Os poucos potenciais de fortalecimento foram: socialização e satisfação de necessidades de reprodução social. Verificou-se o fenômeno da regressão intergeracional. O estudo do binômio desgaste-fortalecimento dos jovens denuncia mais sentidos negativos do que positivos na concomitância trabalho-estudo, intrinsecamente relacionada à necessidade de sobrevivência das famílias. Esse processo é potencialmente desgastante, podendo ocasionar problemas de saúde aos jovens.El objetivo de esta investigación fue reconocer los potenciales de desgaste y de fortalecimiento de jóvenes trabajadores que estudian en un colegio público de una ciudad de RMSP. En este estudio cualitativo, se entrevistó a 19 estudiantes del periodo nocturno, de 16 a 20 años. Los principales potenciales de desgaste fueron: larga jornada de trabajo, exceso de responsabilidad, falta de estabilidad y trabajo principalmente manual, fragmentado y repetitivo. Los pocos potenciales de fortalecimiento fueron: socialización y satisfacción de las necesidades de reproducción social. Se verificó el fenómeno de regresión entre generaciones. El estudio del binomio desgaste-fortalecimiento de los jóvenes denuncia más sentidos negativos en la concomitancia trabajo-estudio, intrínsicamente relacionada a la necesidad de sobrevivencia de las familias. Ese proceso es potencialmente desgastante, pudiendo ocasionar problemas de salud a los jóvenes.The objective of this research was to recognize the strengthening and weakening

ELM-induced transient tungsten melting in the JET divertor

Science.gov (United States)

Coenen, J. W.; Arnoux, G.; Bazylev, B.; Matthews, G. F.; Autricque, A.; Balboa, I.; Clever, M.; Dejarnac, R.; Coffey, I.; Corre, Y.; Devaux, S.; Frassinetti, L.; Gauthier, E.; Horacek, J.; Jachmich, S.; Komm, M.; Knaup, M.; Krieger, K.; Marsen, S.; Meigs, A.; Mertens, Ph.; Pitts, R. A.; Puetterich, T.; Rack, M.; Stamp, M.; Sergienko, G.; Tamain, P.; Thompson, V.; Contributors, JET-EFDA

2015-02-01

The original goals of the JET ITER-like wall included the study of the impact of an all W divertor on plasma operation (Coenen et al 2013 Nucl. Fusion 53 073043) and fuel retention (Brezinsek et al 2013 Nucl. Fusion 53 083023). ITER has recently decided to install a full-tungsten (W) divertor from the start of operations. One of the key inputs required in support of this decision was the study of the possibility of W melting and melt splashing during transients. Damage of this type can lead to modifications of surface topology which could lead to higher disruption frequency or compromise subsequent plasma operation. Although every effort will be made to avoid leading edges, ITER plasma stored energies are sufficient that transients can drive shallow melting on the top surfaces of components. JET is able to produce ELMs large enough to allow access to transient melting in a regime of relevance to ITER. Transient W melt experiments were performed in JET using a dedicated divertor module and a sequence of IP = 3.0 MA/BT = 2.9 T H-mode pulses with an input power of PIN = 23 MW, a stored energy of ˜6 MJ and regular type I ELMs at ΔWELM = 0.3 MJ and fELM ˜ 30 Hz. By moving the outer strike point onto a dedicated leading edge in the W divertor the base temperature was raised within ˜1 s to a level allowing transient, ELM-driven melting during the subsequent 0.5 s. Such ELMs (δW ˜ 300 kJ per ELM) are comparable to mitigated ELMs expected in ITER (Pitts et al 2011 J. Nucl. Mater. 415 (Suppl.) S957-64). Although significant material losses in terms of ejections into the plasma were not observed, there is indirect evidence that some small droplets (˜80 µm) were released. Almost 1 mm (˜6 mm3) of W was moved by ˜150 ELMs within 7 subsequent discharges. The impact on the main plasma parameters was minor and no disruptions occurred. The W-melt gradually moved along the leading edge towards the high-field side, driven by j × B forces. The evaporation rate determined

Thermal shock behavior of W-ZrC/Sc2O3 composites under two different transient events by electron and laser irradiation

Science.gov (United States)

Chen, Hong-Yu; Luo, Lai-Ma; Zan, Xiang; Xu, Qiu; Tokunaga, Kazutoshi; Liu, Jia-Qin; Zhu, Xiao-Yong; Cheng, Ji-Gui; Wu, Yu-Cheng

2018-02-01

The transient thermal shock behaviors of W-ZrC/Sc2O3 composites with different ZrC contents were evaluated using transient thermal shock test by electron and laser beams. The effects of different ZrC doping contents on the surface morphology and thermal shock resistance of W-ZrC/Sc2O3 composites were then investigated. Similarity and difference between effects of electron and laser beam transient heat loading were also discussed in this study. Repeated heat loading resulted in thermal fatigue of the irradiated W-ZrC/Sc2O3 samples by thermal stress, leading to the rough surface morphologies with cracks. After different transient thermal tests, significant surface roughening, cracks, surface melting, and droplet ejection occurred. W-2vol.%Sc2O3 sample has superior thermal properties and greater resistance to surface modifications under transient thermal shock, and with the increasing ZrC content in W alloys, thermal shock resistance of W-Zr/Sc2O3 sample tends to be unsatisfied.

Diary as an Instrument of Philosophic Self-research in Creative Work of J.-P. Sartre

Directory of Open Access Journals (Sweden)

Natalya S. Shurinova

2016-12-01

Full Text Available The article examines the features of diary genre in the works of J.-P. Sartre on the text material, demonstrating an affinity with diary prose, – the novel «Nausea» and «Diary of a strange war». We proceed from the assumption that the relevance of this form is due to Sartre’s genre traits, productive for the formulation of an existential statement. Among them are: a special stylistic organization of the text, the synchronicity of unfinished diary, as well as the possibility of introducing in the text of the indirect recipient and the similarity of the genre with the epistolary form. Each of these features enables Sartre to actualize their own philosophical principles and ideas: openness of the existential project, intentionality of consciousness and the need to examine the person in the aspect of its perception of the world, the senselessness of introspection and self-knowledge of the other. During the analysis we refer to the works of Russian (E.M. Evnin, S.L. Fokin and French Sartre-experts (J.F. Luetta, M. Comte, J. Degi, J. Simon, as well as theoretical studies of the genre (works of Y.M. Lotman, O. Yegorov, A.A. Zaliznyak, L.N. Letyagin, A. Girard, F. Lejeune.

Podejście psychologiczne w terapii jąkania

Directory of Open Access Journals (Sweden)

Agata Błachnio

2013-06-01

Full Text Available Praca omawia różne metody stosowane w terapii jąkania z uwzględnieniem podejścia psychologicznego. Jąkanie jest nie tylko zaburzeniem płynności mówienia, objawy występują bowiem na kilku płaszczyznach: neurofizjologicznej, społecznej i psychologicznej. Terapia jąkania ze względu na złożoność tego zaburzenia wymaga podejścia interdyscy‑ plinarnego, w tym szczególnie koncentracji na radzeniu sobie z emocjami pacjenta i obniżeniu związanych z tym za‑ burzeniem patologicznych reakcji lękowych – logofobii. Celem artykułu jest omówienie metod stosowanych w terapii jąkania oraz ocena ich skuteczności. Główny podział metod zakłada istnienie dwóch podejść: pośrednie i bezpośred‑ nie metody. Metody bezpośrednie oddziałują na akt mowy i mają na celu zmniejszenie niepłynności mowy. Wśród nich można wymienić: rytmizację mówienia, wspomaganie wypowiedzi ruchem ręki czy wydłużenie wypowiedzi. Natomiast metody pośrednie stanowią ich uzupełnienie i koncentrują się na obniżeniu lęku oraz redukcji napięcia po‑ jawiającego się u osoby jąkającej się. Należą do nich różnego rodzaju techniki relaksacyjne, metody oparte na wizu‑ alizacji czy treningi autogenne. Zwracają one uwagę na emocje przeżywane przez osoby jąkające się. Ponadto tech‑ niki takie jak muzykoterapia, psychodrama, hipoterapia, desentyzacja i desensybilizacja są skutecznymi sposobami polepszenia funkcjonowania psychospołecznego osób jąkających się. Prezentowany artykuł ma charakter przeglądo‑ wy, może zatem służyć jako podstawa do opracowania i wdrożenia programów terapeutycznych z udziałem logope‑ dy i psychologa.

The ZnO p-n homojunctions modulated by ZnMgO barriers

International Nuclear Information System (INIS)

Yang, Jing-Jing; Fang, Qing-Qing; Wang, Dan-Dan; Du, Wen-Han

2015-01-01

In this paper, we fabricated the ultrathin ZnO p-n homojunctions, which modulated by ZnMgO asymmetrical double barriers (ADB). The ADB p-n homojunctions displays step-like curve in the absorption spectrums, this is the first time that quantum confinement effect has been observed in the absorption spectrums at room temperature (RT). The Hall-effect data confirm there is 2-dimensional electron gas in the interface of the ZnMgO ADB p-n junctions. The quantum confinement effect enhances the hall-mobility μ to 10 3 cm 2 V −1 s −1 based on the polarity of the films. There was no rectification property in the ZnO homojunctions with thickness of 250nm, however, when the ADB was added in the n-type layer of the homojunctions, it displays a typical Zener diode rectification property in the I-V curve

Determinação de massa fresca, massa seca, água e cinzas totais de folhas de <i>Cissus verticillatai> (L. Nicolson & C. E. Jarvis subsp. <i>verticillata> e avaliação do processo de secagem em estufa com ventilação forçada

Directory of Open Access Journals (Sweden)

T. V. BRAGA

2009-01-01

Full Text Available <p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify; mso-layout-grid-align: none;"> <i>Cissus verticillatai> (L. Nicolson & C. E. Jarvis subsp. <i>verticillata> (Vitaceae é conhecida popularmente como insulina vegetal, cortina japonesa, uva-brava, anil trepador e cipó-pucá e utilizada na medicina popular na forma de chá das folhas no tratamento da diabetes, como antiinflamatório, antiepilético, antihipertensivo, antitérmico, antireumático, antigripal e contra infecções respiratórias. O objetivo deste estudo foi avaliar os teores de massa fresca, massa seca, percentual de água e percentual de cinzas totais, visando melhoria das condições de secagem, armazenamento, dispensação e uso pela população. As folhas da espécie foram coletadas no bairro Antônio Dias, Ouro Preto, Minas Gerais, Brasil. Foram selecionadas, lavadas e secas em estufa com ventilação forçada à 45ºC e determinou-se as cinzas totais e perda por dessecação (através do método gravimétrico, ambos de acordo com a Farmacopéia Brasileira. Os resultados mostraram que as folhas de <i>C. verticillatai> subsp. <i>verticillata> possuem alto teor de água. O processo de secagem em estufa de ventilação forçada, a temperatura de 45ºC, foi eficaz, proporcionando folhas com 11,47% de umidade e 17,99% de cinzas totais. Palavras-chave: <i>Cissus verticillatai>; insulina vegetal; qualidade; gravimetria. p>

Measurements of double-helicity asymmetries in inclusive $J/\\psi$ production in longitudinally polarized $p+p$ collisions at $\\sqrt{s}=510$ GeV

OpenAIRE

Adare, A.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Alfred, M.; Apadula, N.; Aramaki, Y.; Asano, H.; Atomssa, E. T.; Awes, T. C.; Azmoun, B.; Babintsev, V.; Bai, M.; Bandara, N. S.

2016-01-01

We report the double helicity asymmetry, $A_{LL}^{J/\\psi}$, in inclusive $J/\\psi$ production at forward rapidity as a function of transverse momentum $p_T$ and rapidity $|y|$. The data analyzed were taken during $\\sqrt{s}=510$ GeV longitudinally polarized $p$$+$$p$ collisions at the Relativistic Heavy Ion Collider (RHIC) in the 2013 run using the PHENIX detector. At this collision energy, $J/\\psi$ particles are predominantly produced through gluon-gluon scatterings, thus $A_{LL}^{J/\\psi}$ is ...

Evidence for Exotic Hadron Contributions to Λ_{b}^{0}→J/ψpπ^{-} Decays.

Science.gov (United States)

Aaij, R; Abellán Beteta, C; Adeva, B; Adinolfi, M; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Alvarez Cartelle, P; Alves, A A; Amato, S; Amerio, S; Amhis, Y; An, L; Anderlini, L; Andreassi, G; Andreotti, M; Andrews, J E; Appleby, R B; Aquines Gutierrez, O; Archilli, F; d'Argent, P; Arnau Romeu, J; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bachmann, S; Back, J J; Badalov, A; Baesso, C; Baldini, W; Barlow, R J; Barschel, C; Barsuk, S; Barter, W; Batozskaya, V; Battista, V; Bay, A; Beaucourt, L; Beddow, J; Bedeschi, F; Bediaga, I; Bel, L J; Bellee, V; Belloli, N; Belous, K; Belyaev, I; Ben-Haim, E; Bencivenni, G; Benson, S; Benton, J; Berezhnoy, A; Bernet, R; Bertolin, A; Bettler, M-O; van Beuzekom, M; Bifani, S; Billoir, P; Bird, T; Birnkraut, A; Bitadze, A; Bizzeti, A; Blake, T; Blanc, F; Blouw, J; Blusk, S; Bocci, V; Boettcher, T; Bondar, A; Bondar, N; Bonivento, W; Borghi, S; Borisyak, M; Borsato, M; Bossu, F; Boubdir, M; Bowcock, T J V; Bowen, E; Bozzi, C; Braun, S; Britsch, M; Britton, T; Brodzicka, J; Buchanan, E; Burr, C; Bursche, A; Buytaert, J; Cadeddu, S; Calabrese, R; Calvi, M; Calvo Gomez, M; Campana, P; Campora Perez, D; Capriotti, L; Carbone, A; Carboni, G; Cardinale, R; Cardini, A; Carniti, P; Carson, L; Carvalho Akiba, K; Casse, G; Cassina, L; Castillo Garcia, L; Cattaneo, M; Cauet, Ch; Cavallero, G; Cenci, R; Charles, M; Charpentier, Ph; Chatzikonstantinidis, G; Chefdeville, M; Chen, S; Cheung, S-F; Chobanova, V; Chrzaszcz, M; Cid Vidal, X; Ciezarek, G; Clarke, P E L; Clemencic, M; Cliff, H V; Closier, J; Coco, V; Cogan, J; Cogneras, E; Cogoni, V; Cojocariu, L; Collazuol, G; Collins, P; Comerma-Montells, A; Contu, A; Cook, A; Coquereau, S; Corti, G; Corvo, M; Costa Sobral, C M; Couturier, B; Cowan, G A; Craik, D C; Crocombe, A; Cruz Torres, M; Cunliffe, S; Currie, R; D'Ambrosio, C; Dall'Occo, E; Dalseno, J; David, P N Y; Davis, A; De Aguiar Francisco, O; De Bruyn, K; De Capua, S; De Cian, M; De Miranda, J M; De Paula, L; De Simone, P; Dean, C-T; Decamp, D; Deckenhoff, M; Del Buono, L; Demmer, M; Derkach, D; Deschamps, O; Dettori, F; Dey, B; Di Canto, A; Dijkstra, H; Dordei, F; Dorigo, M; Dosil Suárez, A; Dovbnya, A; Dreimanis, K; Dufour, L; Dujany, G; Dungs, K; Durante, P; Dzhelyadin, R; Dziurda, A; Dzyuba, A; Déléage, N; Easo, S; Egede, U; Egorychev, V; Eidelman, S; Eisenhardt, S; Eitschberger, U; Ekelhof, R; Eklund, L; Elsasser, Ch; Ely, S; Esen, S; Evans, H M; Evans, T; Falabella, A; Farley, N; Farry, S; Fay, R; Ferguson, D; Fernandez Albor, V; Ferrari, F; Ferreira Rodrigues, F; Ferro-Luzzi, M; Filippov, S; Fiore, M; Fiorini, M; Firlej, M; Fitzpatrick, C; Fiutowski, T; Fleuret, F; Fohl, K; Fontana, M; Fontanelli, F; Forshaw, D C; Forty, R; Frank, M; Frei, C; Frosini, M; Fu, J; Furfaro, E; Färber, C; Gallas Torreira, A; Galli, D; Gallorini, S; Gambetta, S; Gandelman, M; Gandini, P; Gao, Y; García Pardiñas, J; Garra Tico, J; Garrido, L; Garsed, P J; Gascon, D; Gaspar, C; Gavardi, L; Gazzoni, G; Gerick, D; Gersabeck, E; Gersabeck, M; Gershon, T; Ghez, Ph; Gianì, S; Gibson, V; Girard, O G; Giubega, L; Gizdov, K; Gligorov, V V; Golubkov, D; Golutvin, A; Gomes, A; Gorelov, I V; Gotti, C; Grabalosa Gándara, M; Graciani Diaz, R; Granado Cardoso, L A; Graugés, E; Graverini, E; Graziani, G; Grecu, A; Griffith, P; Grillo, L; Gruberg Cazon, B R; Grünberg, O; Gushchin, E; Guz, Yu; Gys, T; Göbel, C; Hadavizadeh, T; Hadjivasiliou, C; Haefeli, G; Haen, C; Haines, S C; Hall, S; Hamilton, B; Han, X; Hansmann-Menzemer, S; Harnew, N; Harnew, S T; Harrison, J; He, J; Head, T; Heister, A; Hennessy, K; Henrard, P; Henry, L; Hernando Morata, J A; van Herwijnen, E; Heß, M; Hicheur, A; Hill, D; Hombach, C; Hulsbergen, W; Humair, T; Hushchyn, M; Hussain, N; Hutchcroft, D; Idzik, M; Ilten, P; Jacobsson, R; Jaeger, A; Jalocha, J; Jans, E; Jawahery, A; John, M; Johnson, D; Jones, C R; Joram, C; Jost, B; Jurik, N; Kandybei, S; Kanso, W; Karacson, M; Kariuki, J M; Karodia, S; Kecke, M; Kelsey, M; Kenyon, I R; Kenzie, M; Ketel, T; Khairullin, E; Khanji, B; Khurewathanakul, C; Kirn, T; Klaver, S; Klimaszewski, K; Koliiev, S; Kolpin, M; Komarov, I; Koopman, R F; Koppenburg, P; Kozachuk, A; Kozeiha, M; Kravchuk, L; Kreplin, K; Kreps, M; Krokovny, P; Kruse, F; Krzemien, W; Kucewicz, W; Kucharczyk, M; Kudryavtsev, V; Kuonen, A K; Kurek, K; Kvaratskheliya, T; Lacarrere, D; Lafferty, G; Lai, A; Lambert, D; Lanfranchi, G; Langenbruch, C; Langhans, B; Latham, T; Lazzeroni, C; Le Gac, R; van Leerdam, J; Lees, J-P; Leflat, A; Lefrançois, J; Lefèvre, R; Lemaitre, F; Lemos Cid, E; Leroy, O; Lesiak, T; Leverington, B; Li, Y; Likhomanenko, T; Lindner, R; Linn, C; Lionetto, F; Liu, B; Liu, X; Loh, D; Longstaff, I; Lopes, J H; Lucchesi, D; Lucio Martinez, M; Luo, H; Lupato, A; Luppi, E; Lupton, O; Lusiani, A; Lyu, X; Machefert, F; Maciuc, F; Maev, O; Maguire, K; Malde, S; Malinin, A; Maltsev, T; Manca, G; Mancinelli, G; Manning, P; Maratas, J; Marchand, J F; Marconi, U; Marin Benito, C; Marino, P; Marks, J; Martellotti, G; Martin, M; Martinelli, M; Martinez Santos, D; Martinez Vidal, F; Martins Tostes, D; Massacrier, L M; Massafferri, A; Matev, R; Mathad, A; Mathe, Z; Matteuzzi, C; Mauri, A; Maurin, B; Mazurov, A; McCann, M; McCarthy, J; McNab, A; McNulty, R; Meadows, B; Meier, F; Meissner, M; Melnychuk, D; Merk, M; Michielin, E; Milanes, D A; Minard, M-N; Mitzel, D S; Molina Rodriguez, J; Monroy, I A; Monteil, S; Morandin, M; Morawski, P; Mordà, A; Morello, M J; Moron, J; Morris, A B; Mountain, R; Muheim, F; Mulder, M; Mussini, M; Müller, D; Müller, J; Müller, K; Müller, V; Naik, P; Nakada, T; Nandakumar, R; Nandi, A; Nasteva, I; Needham, M; Neri, N; Neubert, S; Neufeld, N; Neuner, M; Nguyen, A D; Nguyen-Mau, C; Niess, V; Nieswand, S; Niet, R; Nikitin, N; Nikodem, T; Novoselov, A; O'Hanlon, D P; Oblakowska-Mucha, A; Obraztsov, V; Ogilvy, S; Okhrimenko, O; Oldeman, R; Onderwater, C J G; Otalora Goicochea, J M; Otto, A; Owen, P; Oyanguren, A; Pais, P R; Palano, A; Palombo, F; Palutan, M; Panman, J; Papanestis, A; Pappagallo, M; Pappalardo, L L; Pappenheimer, C; Parker, W; Parkes, C; Passaleva, G; Patel, G D; Patel, M; Patrignani, C; Pearce, A; Pellegrino, A; Penso, G; Pepe Altarelli, M; Perazzini, S; Perret, P; Pescatore, L; Petridis, K; Petrolini, A; Petrov, A; Petruzzo, M; Picatoste Olloqui, E; Pietrzyk, B; Pikies, M; Pinci, D; Pistone, A; Piucci, A; Playfer, S; Plo Casasus, M; Poikela, T; Polci, F; Poluektov, A; Polyakov, I; Polycarpo, E; Pomery, G J; Popov, A; Popov, D; Popovici, B; Potterat, C; Price, E; Price, J D; Prisciandaro, J; Pritchard, A; Prouve, C; Pugatch, V; Puig Navarro, A; Punzi, G; Qian, W; Quagliani, R; Rachwal, B; Rademacker, J H; Rama, M; Ramos Pernas, M; Rangel, M S; Raniuk, I; Raven, G; Redi, F; Reichert, S; Dos Reis, A C; Remon Alepuz, C; Renaudin, V; Ricciardi, S; Richards, S; Rihl, M; Rinnert, K; Rives Molina, V; Robbe, P; Rodrigues, A B; Rodrigues, E; Rodriguez Lopez, J A; Rodriguez Perez, P; Rogozhnikov, A; Roiser, S; Romanovskiy, V; Romero Vidal, A; Ronayne, J W; Rotondo, M; Ruf, T; Ruiz Valls, P; Saborido Silva, J J; Sadykhov, E; Sagidova, N; Saitta, B; Salustino Guimaraes, V; Sanchez Mayordomo, C; Sanmartin Sedes, B; Santacesaria, R; Santamarina Rios, C; Santimaria, M; Santovetti, E; Sarti, A; Satriano, C; Satta, A; Saunders, D M; Savrina, D; Schael, S; Schiller, M; Schindler, H; Schlupp, M; Schmelling, M; Schmelzer, T; Schmidt, B; Schneider, O; Schopper, A; Schubiger, M; Schune, M-H; Schwemmer, R; Sciascia, B; Sciubba, A; Semennikov, A; Sergi, A; Serra, N; Serrano, J; Sestini, L; Seyfert, P; Shapkin, M; Shapoval, I; Shcheglov, Y; Shears, T; Shekhtman, L; Shevchenko, V; Shires, A; Siddi, B G; Silva Coutinho, R; Silva de Oliveira, L; Simi, G; Sirendi, M; Skidmore, N; Skwarnicki, T; Smith, E; Smith, I T; Smith, J; Smith, M; Snoek, H; Sokoloff, M D; Soler, F J P; Souza, D; Souza De Paula, B; Spaan, B; Spradlin, P; Sridharan, S; Stagni, F; Stahl, M; Stahl, S; Stefko, P; Stefkova, S; Steinkamp, O; Stenyakin, O; Stevenson, S; Stoica, S; Stone, S; Storaci, B; Stracka, S; Straticiuc, M; Straumann, U; Sun, L; Sutcliffe, W; Swientek, K; Syropoulos, V; Szczekowski, M; Szumlak, T; T'Jampens, S; Tayduganov, A; Tekampe, T; Tellarini, G; Teubert, F; Thomas, C; Thomas, E; van Tilburg, J; Tisserand, V; Tobin, M; Tolk, S; Tomassetti, L; Tonelli, D; Topp-Joergensen, S; Toriello, F; Tournefier, E; Tourneur, S; Trabelsi, K; Traill, M; Tran, M T; Tresch, M; Trisovic, A; Tsaregorodtsev, A; Tsopelas, P; Tully, A; Tuning, N; Ukleja, A; Ustyuzhanin, A; Uwer, U; Vacca, C; Vagnoni, V; Valat, S; Valenti, G; Vallier, A; Vazquez Gomez, R; Vazquez Regueiro, P; Vecchi, S; van Veghel, M; Velthuis, J J; Veltri, M; Veneziano, G; Venkateswaran, A; Vesterinen, M; Viaud, B; Vieira, D; Vieites Diaz, M; Vilasis-Cardona, X; Volkov, V; Vollhardt, A; Voneki, B; Voong, D; Vorobyev, A; Vorobyev, V; Voß, C; de Vries, J A; Vázquez Sierra, C; Waldi, R; Wallace, C; Wallace, R; Walsh, J; Wang, J; Ward, D R; Wark, H M; Watson, N K; Websdale, D; Weiden, A; Whitehead, M; Wicht, J; Wilkinson, G; Wilkinson, M; Williams, M; Williams, M P; Williams, M; Williams, T; Wilson, F F; Wimberley, J; Wishahi, J; Wislicki, W; Witek, M; Wormser, G; Wotton, S A; Wraight, K; Wright, S; Wyllie, K; Xie, Y; Xu, Z; Yang, Z; Yin, H; Yu, J; Yuan, X; Yushchenko, O; Zangoli, M; Zarebski, K A; Zavertyaev, M; Zhang, L; Zhang, Y; Zhang, Y; Zhelezov, A; Zheng, Y; Zhokhov, A; Zhukov, V; Zucchelli, S

2016-08-19

A full amplitude analysis of Λ_{b}^{0}→J/ψpπ^{-} decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV pp collisions, corresponding to an integrated luminosity of 3  fb^{-1}. A significantly better description of the data is achieved when, in addition to the previously observed nucleon excitations N→pπ^{-}, either the P_{c}(4380)^{+} and P_{c}(4450)^{+}→J/ψp states, previously observed in Λ_{b}^{0}→J/ψpK^{-} decays, or the Z_{c}(4200)^{-}→J/ψπ^{-} state, previously reported in B^{0}→J/ψK^{+}π^{-} decays, or all three, are included in the amplitude models. The data support a model containing all three exotic states, with a significance of more than three standard deviations. Within uncertainties, the data are consistent with the P_{c}(4380)^{+} and P_{c}(4450)^{+} production rates expected from their previous observation taking account of Cabibbo suppression.

Emissões otoacústicas evocadas transientes e por produto de distorção em escolares Transient evoked otoacustic emissions and distortion product in school children

Directory of Open Access Journals (Sweden)

Rosângela Melo Vasconcelos

2008-08-01

Full Text Available Após os cinco anos de idade, a principal queixa em crianças que não ouvem normalmente é a dificuldade de aprendizagem. OBJETIVOS: Comparar os resultados suspeitos de perda auditiva pela triagem com os exames de emissões otoacústicas evocadas (EOAE transientes (EOAT e por produto de distorção (EOAPD, com dados dos exames audiométricos; observar qual dos dois procedimentos de EOAE responde melhor para triagem em escolares. MATERIAL E MÉTODOS: Avaliar 451 escolares da 1ª série do ensino fundamental, em escolas públicas de São Luís. Foram feitos, na própria escola, os exames otoscópicos com remoção de cerume quando necessário e os exames de EOAT e EOAPD em todos os escolares. Nas crianças que apresentaram alteração em algum dos exames de EOAT e/ou EOAPD foram realizadas a audiometria e imitanciometria. FORMA DE ESTUDO: Prospectivo Transversal. RESULTADOS: Freqüência de 18,6% de rolhas de cerume. Após triagem com EOAT e EOAPD não foi encontrada diferença estatisticamente significante quando comparamos os resultados dos exames que falharam somente nas EOAT e EOAPD com dados dos exames audiométricos, no entanto quando comparado esses dados com falha nos dois exames houve diferença significante (pPast five years of age, the main complaint of children who are hard of hearing is that they have difficulty in learning. AIM: Compare these results to suspected hearing loss, through triage with the exams of evoked otoacoustic emissions (EOAE transients (TEOAE and by distortion product (DPEOAE, using data from audiometric exams; observe which of the procedures of EOAE better respond to school children triage. MATERIALS AND METHODS: To evaluate 451 school children, grade one students, from the public schools in São Luís. At school, otoscopic exams with the removal of wax and the TEOAE and DPEOAE exams were also carried on all school children. Audiometry and acoustic impedance were performed on the children who presented

An i.r. investigation on some calcium aluminate hydrates, Ca2Al(OH)6+X-.yH2O (= 3CaO.Al2O3.CaX2.nH2O, X- = univalent anion)

NARCIS (Netherlands)

Houtepen, C.J.M.; Stein, H.N.

1976-01-01

The i.r. spectra of some hydrated and dehydrated calcium aluminate hydrates of the type Ca2Al(OH)6+X-·yH2O with X- = Cl-, Br-, J-, ClO3-, NO3-, ClO4- (y = 2) and X- = BrO3-, JO3- (2

D-, O- and OD- desorption induced by low-energy (0-20 eV) electron impact on amorphous D2O films

International Nuclear Information System (INIS)

Pan Xiaoning; Abdoul-Carime, Hassan; Cloutier, Pierre; Bass, Andrew D.; Sanche, Leon

2005-01-01

We report measurements of low-energy electron stimulated desorption of D - , O - and OD - anions from multilayer amorphous D 2 O films physisorbed on a Pt substrate. The 0-20 eV incident energy dependence (i.e., the yield function) of the desorbed D - yield reveals the presence of a strong peak located at 7.2 eV with a shoulder near 9 eV, which are due to dissociation of the transient states 2 B 1 and 2 A 1 of D 2 O, respectively. The O - and OD - yield functions each exhibit a single broad structure between 5 and 12 eV which also result from dissociative electron attachment (DEA). Due to the weakness of the O - and OD - signals, three possible processes involving DEA must be considered to explain their yield functions, i.e., direct DEA, reactive scattering and DEA to a new product in the film synthesized by the electron beam. It is concluded that at large electron doses (>7.5x10 14 electrons/cm 2 ), these broad peaks arise from DEA to a new product, whereas at lower dose the possibility of direct DEA (i.e., e - +D 2 O→D 2 O - →O - +D 2 and OD - +D) cannot be entirely discounted. Above 15 eV, all anion yield functions exhibit a monotonic rise due to direct dipolar dissociation

Transient from crystallization to fractal growth observed in both boar bile and SnI sub 2 vapour

CERN Document Server

Zhang Ji Zhong; Xie An Jian

2003-01-01

A visual transient of the growth mechanism from crystallization to fractal growth was observed clearly in a drop of boar bile. The growing crystals were replaced by treelike fractal structures during solidification of the sample. It is fascinating to compare the transient with the result observed in SnI sub 2 vapour. They were completely identical, and revealed that under certain conditions a linear growth could be transferred spontaneously into nonlinear growth. It may be possible to consider the transient as a 'bridge' between linear and nonlinear growth, and to develop a quantitative expression of transient dynamics.

O cinema e o declínio do samurai: uma análise comparativa entre o herói hollywoodiano e o nipônico

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Souza, Guilherme Nunes de

2014-01-01

O oriental prima por tratar da transição do fim do Shogunato à instauração da Era Meiji, enquanto o filme norte-americano opta por já apresentar a decadência do samurai no início dessa era e o processo acelerado de ocidentalização do Japão. Na presente pesquisa, visou-se trabalhar a visão dada aos samurais através do cinema realizando-se um estudo comparado entre um filme norte americano e um japonês. Nossa opção foi a de concentrar a análise na constituição do herói enquanto agente histórico do processo de transformação social evidenciado nos filmes, analisando os diferentes enfoques dados ao samurai, bem como suas normas de conduta, o espaço histórico-social e características de constituição de sua representação imagética

Crystal structure of bis-[(acetato-κO)(imidazolidine-2-thione-κS)bis-(tri-phenyl-phosphane-κP)silver(I)] di-μ-imidazol-idine-2-thione-κ(4) S:S-bis-[(imidazol-id-ine-2-thione-κS)bis-(tri-phenyl-phosphane-κP)silver(I)] di-acetate aceto-nitrile disolvate tetra-hydrate.

Science.gov (United States)

Nimthong-Roldán, Arunpatcha; Ratthiwan, Janejira; Lakmas, Sawanya; Wattanakanjana, Yupa

2016-04-01

In the title compound, [Ag2(C3H6N2S)4(C18H15P)2](C2H3O2)2·[Ag(C2H3O2)(C3H6N2S)(C18H15P)2]2·2C2H3N·4H2O, the Ag(I) ion in the mononuclear neutral complex exhibits a distorted tetra-hedral environment with coordination by two P atoms from tri-phenyl-phosphane (PPh3) ligands, one S atom of an imidazolidine-2-thione (etu) ligand and one O atom of an acetate anion. The binuclear cationic complex comprises two inversion-related [Ag(C3H6N2S)2(C18H15P)] units with Ag(I) ions bridged by two S atoms from etu ligands forming a four-membered Ag-S-Ag-S ring. Each Ag(I) ion is coordinated by a P atom of a PPh3 ligand, two S atoms of bridging etu ligands and the terminal S atom of an etu ligand in a distorted tetra-hedral environment. In the crystal, the mononuclear complex is linked to lattice water mol-ecules through O-H⋯O and N-H⋯O hydrogen bonds, forming a chain along [100]. In addition, the binuclear complex mol-ecules are connected to acetate anions and lattice water mol-ecules via O-H⋯O, N-H⋯O and O-H⋯S hydrogen bonds, also along [100].

Kinetics of transient electroluminescence in organic light emitting diodes

Science.gov (United States)

Shukla, Manju; Kumar, Pankaj; Chand, Suresh; Brahme, Nameeta; Kher, R. S.; Khokhar, M. S. K.

2008-08-01

Mathematical simulation on the rise and decay kinetics of transient electroluminescence (EL) in organic light emitting diodes (OLEDs) is presented. The transient EL is studied with respect to a step voltage pulse. While rising, for lower values of time, the EL intensity shows a quadratic dependence on (t - tdel), where tdel is the time delay observed in the onset of EL, and finally attains saturation at a sufficiently large time. When the applied voltage is switched off, the initial EL decay shows an exponential dependence on (t - tdec), where tdec is the time when the voltage is switched off. The simulated results are compared with the transient EL performance of a bilayer OLED based on small molecular bis(2-methyl 8-hydroxyquinoline)(triphenyl siloxy) aluminium (SAlq). Transient EL studies have been carried out at different voltage pulse amplitudes. The simulated results show good agreement with experimental data. Using these simulated results the lifetime of the excitons in SAlq has also been calculated.

Kinetics of transient electroluminescence in organic light emitting diodes

International Nuclear Information System (INIS)

Shukla, Manju; Brahme, Nameeta; Kumar, Pankaj; Chand, Suresh; Kher, R S; Khokhar, M S K

2008-01-01

Mathematical simulation on the rise and decay kinetics of transient electroluminescence (EL) in organic light emitting diodes (OLEDs) is presented. The transient EL is studied with respect to a step voltage pulse. While rising, for lower values of time, the EL intensity shows a quadratic dependence on (t - t del ), where t del is the time delay observed in the onset of EL, and finally attains saturation at a sufficiently large time. When the applied voltage is switched off, the initial EL decay shows an exponential dependence on (t - t dec ), where t dec is the time when the voltage is switched off. The simulated results are compared with the transient EL performance of a bilayer OLED based on small molecular bis(2-methyl 8-hydroxyquinoline)(triphenyl siloxy) aluminium (SAlq). Transient EL studies have been carried out at different voltage pulse amplitudes. The simulated results show good agreement with experimental data. Using these simulated results the lifetime of the excitons in SAlq has also been calculated

jQuery Pocket Reference

CERN Document Server

Flanagan, David

2010-01-01

"As someone who uses jQuery on a regular basis, it was surprising to discover how much of the library I'm not using. This book is indispensable for anyone who is serious about using jQuery for non-trivial applications."-- Raffaele Cecco, longtime developer of video games, including Cybernoid, Exolon, and Stormlord jQuery is the "write less, do more" JavaScript library. Its powerful features and ease of use have made it the most popular client-side JavaScript framework for the Web. This book is jQuery's trusty companion: the definitive "read less, learn more" guide to the library. jQuery P

Wytrzymałość biegowa i pływacka studentów UKW Bydgoszcz = Speeding and swimming endurance of students UKW Bydgoszcz

Directory of Open Access Journals (Sweden)

Diana Gwiździel

2016-08-01

  Streszczenie Do określenia poziomu wytrzymałości pływackiej i biegowej studentów kierunku Turystyka i Rekreacja Uniwersytetu Kazimierza Wielkiego w Bydgoszczy, wybrano metodę eksperymentu pedagogicznego, natomiast, jako technikę wybrano test, a narzędziem do przeprowadzenia badań został test Coopera. W odpowiedzi na główny problem badawczy, na podstawie przeprowadzonych badań można stwierdzić, że poziom wytrzymałości biegowej studentów Turystyki i Rekreacji plasuje się na poziomie dobrym i średnim, gdyż znaczna część grupy uzyskiwała takie wyniki. Natomiast w próbie pływackiej badana grupa wypadła znacznie gorzej, gdyż największa liczba uczestników uzyskała słaby wynik. Nieco mniej osób osiągnęło zadawalający rezultat. Zarówno w próbie biegowej, jak i pływackiej przedstawiciele płci męskiej uzyskiwali lepsze wyniki od przedstawicielek płci żeńskiej. Jednakże najbardziej widoczne różnice między obiema płciami można zaobserwować w próbie pływackiej, w której uczestniczki biegu w większej mierze wyniki słabe albo bardzo słabe, kiedy studenci przeważnie zadawalające. Słowa kluczowe: wytrzymałość, Test Coopera, pływanie.     Abstract To determine the level of endurance swimming and cross-country students of Tourism and Recreation at the University of Bydgoszcz, you chose the method of pedagogical experiment, however, the technique chosen test, and a tool for testing was Cooper test. In response to the major research problem, on the basis of the study it can be concluded that the level of endurance cross-country students of Tourism and Recreation ranks of good and medium, since a significant part of the group it obtained such results. However, in an attempt to swim test group fared much worse, since the largest number of participants received a poor result. Slightly fewer people reached a satisfactory result. Both in an attempt to cross-country, swimming and representatives of the male experienced

J /ψ production at low transverse momentum in p +p and d + Au collisions at √{sN N}=200 GeV

Science.gov (United States)

Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I.; Aparin, A.; Arkhipkin, D.; Aschenauer, E. C.; Attri, A.; Averichev, G. S.; Bai, X.; Bairathi, V.; Bellwied, R.; Bhasin, A.; Bhati, A. K.; Bhattarai, P.; Bielcik, J.; Bielcikova, J.; Bland, L. C.; Bordyuzhin, I. G.; Bouchet, J.; Brandenburg, J. D.; Brandin, A. V.; Bunzarov, I.; Butterworth, J.; Caines, H.; Calderón de la Barca Sánchez, M.; Campbell, J. M.; Cebra, D.; Chakaberia, I.; Chaloupka, P.; Chang, Z.; Chatterjee, A.; Chattopadhyay, S.; Chen, J. H.; Chen, X.; Cheng, J.; Cherney, M.; Christie, W.; Contin, G.; Crawford, H. J.; Das, S.; De Silva, L. C.; Debbe, R. R.; Dedovich, T. G.; Deng, J.; Derevschikov, A. A.; di Ruzza, B.; Didenko, L.; Dilks, C.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Du, C. M.; Dunkelberger, L. E.; Dunlop, J. C.; Efimov, L. G.; Engelage, J.; Eppley, G.; Esha, R.; Evdokimov, O.; Eyser, O.; Fatemi, R.; Fazio, S.; Federic, P.; Fedorisin, J.; Feng, Z.; Filip, P.; Fisyak, Y.; Flores, C. E.; Fulek, L.; Gagliardi, C. A.; Garand, D.; Geurts, F.; Gibson, A.; Girard, M.; Greiner, L.; Grosnick, D.; Gunarathne, D. S.; Guo, Y.; Gupta, S.; Gupta, A.; Guryn, W.; Hamad, A. I.; Hamed, A.; Haque, R.; Harris, J. W.; He, L.; Heppelmann, S.; Heppelmann, S.; Hirsch, A.; Hoffmann, G. W.; Horvat, S.; Huang, T.; Huang, X.; Huang, B.; Huang, H. Z.; Huck, P.; Humanic, T. J.; Igo, G.; Jacobs, W. W.; Jang, H.; Jentsch, A.; Jia, J.; Jiang, K.; Judd, E. G.; Kabana, S.; Kalinkin, D.; Kang, K.; Kauder, K.; Ke, H. W.; Keane, D.; Kechechyan, A.; Khan, Z. H.; Kikoła, D. P.; Kisel, I.; Kisiel, A.; Kochenda, L.; Koetke, D. D.; Kosarzewski, L. K.; Kraishan, A. F.; Kravtsov, P.; Krueger, K.; Kumar, L.; Lamont, M. A. C.; Landgraf, J. M.; Landry, K. D.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, J. H.; Li, X.; Li, C.; Li, X.; Li, Y.; Li, W.; Lin, T.; Lisa, M. A.; Liu, F.; Ljubicic, T.; Llope, W. J.; Lomnitz, M.; Longacre, R. S.; Luo, X.; Ma, R.; Ma, G. L.; Ma, Y. G.; Ma, L.; Magdy, N.; Majka, R.; Manion, A.; Margetis, S.; Markert, C.; Matis, H. S.; McDonald, D.; McKinzie, S.; Meehan, K.; Mei, J. C.; Minaev, N. G.; Mioduszewski, S.; Mishra, D.; Mohanty, B.; Mondal, M. M.; Morozov, D. A.; Mustafa, M. K.; Nandi, B. K.; Nasim, Md.; Nayak, T. K.; Nigmatkulov, G.; Niida, T.; Nogach, L. V.; Noh, S. Y.; Novak, J.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Oh, K.; Okorokov, V. A.; Olvitt, D.; Page, B. S.; Pak, R.; Pan, Y. X.; Pandit, Y.; Panebratsev, Y.; Pawlik, B.; Pei, H.; Perkins, C.; Pile, P.; Pluta, J.; Poniatowska, K.; Porter, J.; Posik, M.; Poskanzer, A. M.; Powell, C. B.; Pruthi, N. K.; Putschke, J.; Qiu, H.; Quintero, A.; Ramachandran, S.; Raniwala, S.; Raniwala, R.; Ray, R. L.; Reed, R.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Ruan, L.; Rusnak, J.; Rusnakova, O.; Sahoo, N. R.; Sahu, P. K.; Sakrejda, I.; Salur, S.; Sandweiss, J.; Sarkar, A.; Schambach, J.; Scharenberg, R. P.; Schmah, A. M.; Schmidke, W. B.; Schmitz, N.; Seger, J.; Seyboth, P.; Shah, N.; Shahaliev, E.; Shanmuganathan, P. V.; Shao, M.; Sharma, A.; Sharma, B.; Sharma, M. K.; Shen, W. Q.; Shi, Z.; Shi, S. S.; Shou, Q. Y.; Sichtermann, E. P.; Sikora, R.; Simko, M.; Singha, S.; Skoby, M. J.; Smirnov, N.; Smirnov, D.; Solyst, W.; Song, L.; Sorensen, P.; Spinka, H. M.; Srivastava, B.; Stanislaus, T. D. S.; Stepanov, M.; Stock, R.; Strikhanov, M.; Stringfellow, B.; Sumbera, M.; Summa, B.; Sun, Z.; Sun, X. M.; Sun, Y.; Surrow, B.; Svirida, D. N.; Tang, Z.; Tang, A. H.; Tarnowsky, T.; Tawfik, A.; Thäder, J.; Thomas, J. H.; Timmins, A. R.; Tlusty, D.; Todoroki, T.; Tokarev, M.; Trentalange, S.; Tribble, R. E.; Tribedy, P.; Tripathy, S. K.; Tsai, O. D.; Ullrich, T.; Underwood, D. G.; Upsal, I.; Van Buren, G.; van Nieuwenhuizen, G.; Vandenbroucke, M.; Varma, R.; Vasiliev, A. N.; Vertesi, R.; Videbæk, F.; Vokal, S.; Voloshin, S. A.; Vossen, A.; Wang, F.; Wang, G.; Wang, J. S.; Wang, H.; Wang, Y.; Wang, Y.; Webb, G.; Webb, J. C.; Wen, L.; Westfall, G. D.; Wieman, H.; Wissink, S. W.; Witt, R.; Wu, Y.; Xiao, Z. G.; Xie, W.; Xie, G.; Xin, K.; Xu, Y. F.; Xu, Q. H.; Xu, N.; Xu, H.; Xu, Z.; Xu, J.; Yang, S.; Yang, Y.; Yang, Y.; Yang, C.; Yang, Y.; Yang, Q.; Ye, Z.; Ye, Z.; Yepes, P.; Yi, L.; Yip, K.; Yoo, I.-K.; Yu, N.; Zbroszczyk, H.; Zha, W.; Zhang, X. P.; Zhang, Y.; Zhang, J.; Zhang, J.; Zhang, S.; Zhang, S.; Zhang, Z.; Zhang, J. B.; Zhao, J.; Zhong, C.; Zhou, L.; Zhu, X.; Zoulkarneeva, Y.; Zyzak, M.; STAR Collaboration

2016-06-01

We report on the measurement of J /ψ production in the dielectron channel at midrapidity (|y | from the measured J /ψ invariant cross section in p +p and d +Au collisions are evaluated and compared to similar measurements at other collision energies. The nuclear modification factor for J /ψ is extracted as a function of pT and collision centrality in d +Au and compared to model calculations using the modified nuclear parton distribution function and a final-state J /ψ nuclear absorption cross section.

Crystallization-mediated amorphous Cu{sub x}O (x = 1, 2)/crystalline CuI p–p type heterojunctions with visible light enhanced and ultraviolet light restrained photocatalytic dye degradation performance

Energy Technology Data Exchange (ETDEWEB)

Wang, Hongli; Cai, Yun; Zhou, Jian; Fang, Jun, E-mail: fangjun@njtech.edu.cn; Yang, Yang, E-mail: yangy@njtech.edu.cn

2017-04-30

Highlights: • Cu{sub x}O(x = 1, 2)/CuI p–p type heterojunctions were facilely constructed via crystallization-mediated approaches. • Cu{sub x}O/CuI heterojunctions exhibit effective visible-light-driven photocatalytic activity for dye degradation. • The Cu{sub x}O/CuI interface can enhance the spatial separation of the photogenerated electron–hole pairs. • This work represents a critical step for mass production of functional semiconductor heterojunctions in a mild manner. - Abstract: We report simple and cost-effective fabrication of amorphous Cu{sub x}O (x = 1, 2)/crystalline CuI p–p type heterojunctions based on crystallization-mediated approaches including antisolvent crystallization and crystal reconstruction. Starting from CuI acetonitrile solution, large crystals in commercial CuI can be easily converted to aggregates consisting of small particles by the crystallization processes while the spontaneous oxidation of CuI by atmospheric/dissolved oxygen can induce the formation of trace Cu{sub x}O on CuI surface. As a proof of concept, the as-fabricated Cu{sub x}O/CuI heterojunctions exhibit effective photocatalytic activity towards the degradation of methyl blue and other organic pollutants under visible light irradiation, although the wide band-gap semiconductor CuI is insensible to visible light. Unexpectedly, the Cu{sub x}O/CuI heterojunctions exhibit restrained photocatalytic activity when ultraviolet light is applied in addition to the visible. It is suggested that the Cu{sub x}O/CuI interface can enhance the spatial separation of the electron–hole pairs with the excitation of Cu{sub x}O under visible light and prolong the lifetime of photogenerated charges with high redox ability. The present work represents a critically important step in advancing the crystallization technique for potential mass production of semiconductor heterojunctions in a mild manner.

<i>NuSTAR i>detection of a cyclotron line in the supergiant fast X-ray transient IGR J17544-2619

DEFF Research Database (Denmark)

Bhalerao, Varun; Romano, Patrizia; Tomsick, John

2015-01-01

that the compact object in IGR J17544-2619 is indeed a neutron star. This is the first measurement of the magnetic field in an SFXT. The inferred magnetic field strength, B = (1.45 +/- 0.03) x 1012 G (1 + z) is typical of neutron stars in X-ray binaries, and rules out a magnetar nature for the compact object. We...

Triagem auditiva neonatal com emissão otoacústica transiente utilizando estímulo de banda estreita

Directory of Open Access Journals (Sweden)

Isabela Freixo Côrtes-Andrade

2015-06-01

Full Text Available OBJETIVO: avaliar a sensibilidade e a especificidade de um equipamento automático de Emissão Otoacustica Evocada Transiente que utiliza um estímulo de banda estreita, Narrow. MÉTODOS: foi analisado o resultado da Triagem Auditiva Neonatal de 300 neonatos. A Emissão Otoacústica Evocada Transiente foi realizada com um equipamento portátil automático, com o estímulo de banda estreita - Narrow. Todos os neonatos foram submetidos ao Potencial Evocado Auditivo de Tronco Encefálico com o estímulo clique, duração 100μs como padrão-ouro. RESULTADOS: o percentual de "passa" na Triagem Auditiva Neonatal foi de 90,7%. Considerando os resultados do padrão-ouro, foi observado uma taxa de falso-positivo de 9%. A sensibilidade e especificidade encontradas foram de 100% e 92%, respectivamente. CONCLUSÃO: o estímulo de banda estreita - Narrow mostrou-se eficaz para ser utilizado nos programa de Triagem Auditiva Neonatal Universal.

NuSTAR J163433-4738.7: A fast X-ray transient in the galactic plane

International Nuclear Information System (INIS)

Tomsick, John A.; Bodaghee, Arash; Boggs, Steven E.; Craig, William W.; Fornasini, Francesca M.; Krivonos, Roman; Gotthelf, Eric V.; Hailey, Charles J.; Rahoui, Farid; Assef, Roberto J.; Bauer, Franz E.; Christensen, Finn E.; Grindlay, Jonathan; Harrison, Fiona A.; Natalucci, Lorenzo; Stern, Daniel; Zhang, William W.

2014-01-01

During hard X-ray observations of the Norma spiral arm region by the Nuclear Spectroscopic Telescope Array (NuSTAR) in 2013 February, a new transient source, NuSTAR J163433-4738.7, was detected at a significance level of 8σ in the 3-10 keV bandpass. The source is consistent with having a constant NuSTAR count rate over a period of 40 ks and is also detected simultaneously by Swift at lower significance. The source is not significantly detected by NuSTAR, Swift, or Chandra in the days before or weeks after the discovery of the transient, indicating that the strong X-ray activity lasted between ∼0.5 and 1.5 days. Near-infrared imaging observations were carried out before and after the X-ray activity, but we are not able to identify the counterpart. The combined NuSTAR and Swift energy spectrum is consistent with a power law with a photon index of Γ=4.1 −1.0 +1.5 (90% confidence errors), a blackbody with kT = 1.2 ± 0.3 keV, or a Bremsstrahlung model with kT=3.0 −1.2 +2.1 keV. The reduced-χ 2 values for the three models are not significantly different, ranging from 1.23 to 1.44 for 8 degrees of freedom. The spectrum is strongly absorbed with N H =(2.8 −1.4 +2.3 )×10 23 cm –2 , (9 −7 +15 )×10 22 cm –2 , and (1.7 −0.9 +1.7 )×10 23 cm –2 , for the power-law, blackbody, and Bremsstrahlung models, respectively. Although the high column density could be due to material local to the source, it is consistent with absorption from interstellar material along the line of sight at a distance of 11 kpc, which would indicate an X-ray luminosity >10 34 erg s –1 . Although we do not reach a definitive determination of the nature of NuSTAR J163433-4738.7, we suggest that it may be an unusually bright active binary or a magnetar.

NuSTAR J163433-4738.7: A fast X-ray transient in the galactic plane

Energy Technology Data Exchange (ETDEWEB)

Tomsick, John A.; Bodaghee, Arash; Boggs, Steven E.; Craig, William W.; Fornasini, Francesca M.; Krivonos, Roman [Space Sciences Laboratory, 7 Gauss Way, University of California, Berkeley, CA 94720-7450 (United States); Gotthelf, Eric V.; Hailey, Charles J. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Rahoui, Farid [European Southern Observatory, Karl Schwarzschild-Strasse 2, D-85748 Garching bei München (Germany); Assef, Roberto J. [Núcleo de Astronomía de la Facultad de Ingeniería, Universidad Diego Portales, Av. Ejército 441, Santiago (Chile); Bauer, Franz E. [Instituto de Astrofísica, Facultad de Física, Pontifica Universidad Católica de Chile, 306, Santiago 22 (Chile); Christensen, Finn E. [DTU Space, National Space Institute, Technical University of Denmark, Elektrovej 327, DK-2800 Lyngby (Denmark); Grindlay, Jonathan [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Harrison, Fiona A. [Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125 (United States); Natalucci, Lorenzo [Istituto Nazionale di Astrofisica, INAF-IAPS, via del Fosso del Cavaliere, I-00133 Roma (Italy); Stern, Daniel [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Zhang, William W., E-mail: jtomsick@ssl.berkeley.edu [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2014-04-10

During hard X-ray observations of the Norma spiral arm region by the Nuclear Spectroscopic Telescope Array (NuSTAR) in 2013 February, a new transient source, NuSTAR J163433-4738.7, was detected at a significance level of 8σ in the 3-10 keV bandpass. The source is consistent with having a constant NuSTAR count rate over a period of 40 ks and is also detected simultaneously by Swift at lower significance. The source is not significantly detected by NuSTAR, Swift, or Chandra in the days before or weeks after the discovery of the transient, indicating that the strong X-ray activity lasted between ∼0.5 and 1.5 days. Near-infrared imaging observations were carried out before and after the X-ray activity, but we are not able to identify the counterpart. The combined NuSTAR and Swift energy spectrum is consistent with a power law with a photon index of Γ=4.1{sub −1.0}{sup +1.5} (90% confidence errors), a blackbody with kT = 1.2 ± 0.3 keV, or a Bremsstrahlung model with kT=3.0{sub −1.2}{sup +2.1} keV. The reduced-χ{sup 2} values for the three models are not significantly different, ranging from 1.23 to 1.44 for 8 degrees of freedom. The spectrum is strongly absorbed with N{sub H}=(2.8{sub −1.4}{sup +2.3})×10{sup 23} cm{sup –2}, (9{sub −7}{sup +15})×10{sup 22} cm{sup –2}, and (1.7{sub −0.9}{sup +1.7})×10{sup 23} cm{sup –2}, for the power-law, blackbody, and Bremsstrahlung models, respectively. Although the high column density could be due to material local to the source, it is consistent with absorption from interstellar material along the line of sight at a distance of 11 kpc, which would indicate an X-ray luminosity >10{sup 34} erg s{sup –1}. Although we do not reach a definitive determination of the nature of NuSTAR J163433-4738.7, we suggest that it may be an unusually bright active binary or a magnetar.

NuSTAR J163433-4738.7: A Fast X-Ray Transient in the Galactic Plane

Science.gov (United States)

Tomsick, John A.; Gotthelf, Eric V.; Rahoui, Farid; Assef, Roberto J.; Bauer, Franz E.; Bodaghee, Arash; Boggs, Steven E.; Christensen, Finn E.; Craig, William W.; Fornasini, Francesca M.;

Rise and fall of ferromagnetism in O-irradiated Al2O3 single crystals

International Nuclear Information System (INIS)

Li, Qiang; Xu, Juping; Liu, Jiandang; Du, Huaijiang; Ye, Bangjiao

2015-01-01

In dilute magnetic semiconductors studies, sapphire was usually used as non-magnetic substrate for films. We observed weak ferromagnetic component in Al 2 O 3 single crystal substrate, and excluded the possibility of ferromagnetic contaminations carefully by inductively coupled plasma mass spectrometry and X-ray photoelectron spectroscopy. The ferromagnetism rise and fall during the process of annealing-oxygen irradiation-annealing of the sapphire. The ferromagnetic changes are consistent with Al-vacancy related defects detected by positron annihilation spectroscopy. With first-principle calculations, we confirm that Al-vacancy can introduce magnetic moment for 3 μB in Al 2 O 3 crystal and form stable V Al -V Al ferromagnetic coupling at room temperature

I/O-Optimal Distribution Sweeping on Private-Cache Chip Multiprocessors

DEFF Research Database (Denmark)

Ajwani, Deepak; Sitchinava, Nodar; Zeh, Norbert

2011-01-01

/PB) for a number of problems on axis aligned objects; P denotes the number of cores/processors, B denotes the number of elements that fit in a cache line, N and K denote the sizes of the input and output, respectively, and sortp(N) denotes the I/O complexity of sorting N items using P processors in the PEM model...... framework was introduced recently, and a number of algorithms for problems on axis-aligned objects were obtained using this framework. The obtained algorithms were efficient but not optimal. In this paper, we improve the framework to obtain algorithms with the optimal I/O complexity of O(sortp(N) + K...

Earlier activity from XTE J1739-302/IGR J17391-3021 detected by INTEGRAL

DEFF Research Database (Denmark)

Chenevez, Jérôme; Beckmann, V.; Kuulkers, E.

2008-01-01

The recently reported outburst from the supergiant fast X-ray transient XTE J1739-302/IGR J17391-3021 (ATEL #1466) began already about five hours earlier than the Swift/BAT trigger on 2008-04-08. The INTEGRAL/JEM-X monitor detected a flare starting at 16:18 (UTC) on the same day during recent Gal...

Solar treatment (H2O2, TiO2-P25 and GO-TiO2 photocatalysis, photo-Fenton) of organic micropollutants, human pathogen indicators, antibiotic resistant bacteria and related genes in urban wastewater.

Science.gov (United States)

Moreira, Nuno F F; Narciso-da-Rocha, Carlos; Polo-López, M Inmaculada; Pastrana-Martínez, Luisa M; Faria, Joaquim L; Manaia, Célia M; Fernández-Ibáñez, Pilar; Nunes, Olga C; Silva, Adrián M T

2018-05-15

Solar-driven advanced oxidation processes were studied in a pilot-scale photoreactor, as tertiary treatments of effluents from an urban wastewater treatment plant. Solar-H 2 O 2 , heterogeneous photocatalysis (with and/or without the addition of H 2 O 2 and employing three different photocatalysts) and the photo-Fenton process were investigated. Chemical (sulfamethoxazole, carbamazepine, and diclofenac) and biological contaminants (faecal contamination indicators, their antibiotic resistant counterparts, 16S rRNA and antibiotic resistance genes), as well as the whole bacterial community, were characterized. Heterogeneous photocatalysis using TiO 2 -P25 and assisted with H 2 O 2 (P25/H 2 O 2 ) was the most efficient process on the degradation of the chemical organic micropollutants, attaining levels below the limits of quantification in less than 4 h of treatment (corresponding to Q UV  < 40 kJ L -1 ). This performance was followed by the same process without H 2 O 2 , using TiO 2 -P25 or a composite material based on graphene oxide and TiO 2 . Regarding the biological indicators, total faecal coliforms and enterococci and their antibiotic resistant (tetracycline and ciprofloxacin) counterparts were reduced to values close, or beneath, the detection limit (1 CFU 100 mL -1 ) for all treatments employing H 2 O 2 , even upon storage of the treated wastewater for 3-days. Moreover, P25/H 2 O 2 and solar-H 2 O 2 were the most efficient processes in the reduction of the abundance (gene copy number per volume of wastewater) of the analysed genes. However, this reduction was transient for 16S rRNA, intI1 and sul1 genes, since after 3-days storage of the treated wastewater their abundance increased to values close to pre-treatment levels. Similar behaviour was observed for the genes qnrS (using TiO 2 -P25), bla CTX-M and bla TEM (using TiO 2 -P25 and TiO 2 -P25/H 2 O 2 ). Interestingly, higher proportions of sequence reads affiliated to the phylum Proteobacteria

IGR J17544-2619 IN DEPTH WITH SUZAKU: DIRECT EVIDENCE FOR CLUMPY WINDS IN A SUPERGIANT FAST X-RAY TRANSIENT

International Nuclear Information System (INIS)

Rampy, Rachel A.; Smith, David M.; Negueruela, Ignacio

2009-01-01

We present direct evidence for dense clumps of matter in the companion wind in a Supergiant Fast X-ray Transient (SFXT) binary. This is seen as a brief period of enhanced absorption during one of the bright, fast flares that distinguish these systems. The object under study was IGR J17544-2619, and a total of 236 ks of data were accumulated with the Japanese satellite Suzaku. The activity in this period spans a dynamic range of almost 10 4 in luminosity and gives a detailed look at SFXT behavior.

First record of <i>Centromerus arcanusi> (O. P.-Cambridge, 1873) from Greenland (Araneae, Linyphiidae)

DEFF Research Database (Denmark)

Lissner, Jørgen; Gravesen, Eigil Vestergaard

2017-01-01

The linyphiid spider Centromerus arcanus (O. P.-Cambridge, 1873) is reported new to Greenland. A single female was pitfall trapped in South-West Greenland at Kobbefjord in the summer of 2016 constituting the first record of this species in the Nearctic ecozone. The habitat in which the Greenland...

Fracture Mechanics Evaluation of B-1 Materials. Volume I. Text

Science.gov (United States)

1976-10-01

4V Microstructures 2-37 P.4-1 TIG Welding Setup 2-60 2.4-2 Macrographs Showing Transverse Cross- 2-61 Sections of Typical Weld Joints 2.4-3 Diffusion...concavity. k. PAW welding parameters were: Keyhole Mode (First Pass) 1fWelding-Amperage - 185 Pilot Arc Amperage - P5 1/5" Diameter Tungsten -P% Thoria...of tooling employed. 2. •𔃼󈧿 r a • 4 .fA A A ~ . - 4N. I 141Eb,~..0 1171 :41ýI t4, 1. r "I j, O~ vN;I ___4 A Ad2 Figuire 2.4-1i TIG Welding , Setup

Theoretical hyperfine structures of 19F i and 17O i

Science.gov (United States)

Aourir, Nouria; Nemouchi, Messaoud; Godefroid, Michel; Jönsson, Per

2018-03-01

Multiconfiguration Hartree-Fock (MCHF) and multiconfiguration Dirac-Hartree-Fock (MCDHF) calculations are performed for the 2 p5P2o , 2 p4(3P ) 3 s 4P , 2 p4(3P ) 3 s 2P , and 2 p4(3P ) 3 p 4So states of 19F i to determine their hyperfine constants. Several computing strategies are considered to investigate electron correlation and relativistic effects. High-order correlation contributions are included in MCHF calculations based on single and double multireference expansions. The largest components of the single reference MCHF wave functions are selected to define the multireference (MR) sets. In this scheme, relativistic corrections are evaluated in the Breit-Pauli approximation. A similar strategy is used for the calculation of MCDHF relativistic wave functions and hyperfine parameters. While correlation and relativistic corrections are found to be rather small for the ground state, we highlight large relativistic effects on the hyperfine constant A3 /2 of 2 p4(3P ) 3 p 4So and, to a lesser extent, on A1 /2 of 2 p4(3P ) 3 s 4P . As expected for such a light system, electron correlation effects dominate over relativity in the calculation of the hyperfine interaction of all other levels considered. We also revisit the hyperfine constants of 2 p3(4S ) 3 s S5o and 2 p3(4S ) 3 p 5P in 17O using similar strategies. The results are found to be in excellent agreement with experiment.

NuSTAR + XMM-Newton monitoring of the neutron star transient AX J1745.6-2901

Science.gov (United States)

Ponti, G.; Bianchi, S.; Muñoz-Darias, T.; Mori, K.; De, K.; Rau, A.; De Marco, B.; Hailey, C.; Tomsick, J.; Madsen, K. K.; Clavel, M.; Rahoui, F.; Lal, D. V.; Roy, S.; Stern, D.

2018-01-01

AX J1745.6-2901 is a high-inclination (eclipsing) transient neutron star (NS) low-mass X-ray binary showcasing intense ionized Fe K absorption. We present here the analysis of 11 XMM-Newton and 15 NuSTAR new data sets (obtained between 2013 and 2016), therefore tripling the number of observations of AX J1745.6-2901 in outburst. Thanks to simultaneous XMM-Newton and NuSTAR spectra, we greatly improve on the fitting of the X-ray continuum. During the soft state, the emission can be described by a disc blackbody (kT ∼ 1.1-1.2 keV and inner disc radius rDBB ∼ 14 km), plus hot (kT ∼ 2.2-3.0 keV) blackbody radiation with a small emitting radius (rBB ∼ 0.5 - 0.8 km) likely associated with the boundary layer or NS surface, plus a faint Comptonization component. Imprinted on the spectra are clear absorption features created by both neutral and ionized matter. Additionally, positive residuals suggestive of an emission Fe K α disc line and consistent with relativistic ionized reflection are present during the soft state, while such residuals are not significant during the hard state. The hard-state spectra are characterized by a hard (Γ ∼ 1.9-2.1) power law, showing no evidence for a high energy cut-off (kTe > 60-140 keV) and implying a small optical depth (τ < 1.6). The new observations confirm the previously witnessed trend of exhibiting strong Fe K absorption in the soft state that significantly weakens during the hard state. Optical (GROND) and radio (GMRT) observations suggest for AX J1745.6-2901 a standard broad-band spectral energy distribution as typically observed in accreting NSs.

Aquisição de medicamentos no setor público: o binômio qualidade - custo

Directory of Open Access Journals (Sweden)

Luiza Vera Lúcia

1999-01-01

Full Text Available No presente trabalho, os autores abordam, dentro do âmbito da administração de materiais, a aquisição e o aprovisionamento de medicamentos no setor público de saúde, discutindo as duas principais vertentes da questão: qualidade e custo. São relatados os fatores que devem ser considerados pelo comprador quando se avalia o quesito qualidade de medicamentos, em especial a questão dos genéricos, a bioequivalência e a estabilidade das formulações. Por outro lado, o item custo é examinado, assim como as implicações que uma demanda diferenciada e voltada para as inovações tecnológicas tem sobre ele. Por fim, discutem-se alternativas, já empregadas em algumas instituições, apresentando-se sugestões cuja finalidade implica na possibilidade de compra de produtos de qualidade aliada à contenção de custos.

Aquisição de medicamentos no setor público: o binômio qualidade - custo

Directory of Open Access Journals (Sweden)

Vera Lúcia Luiza

Full Text Available No presente trabalho, os autores abordam, dentro do âmbito da administração de materiais, a aquisição e o aprovisionamento de medicamentos no setor público de saúde, discutindo as duas principais vertentes da questão: qualidade e custo. São relatados os fatores que devem ser considerados pelo comprador quando se avalia o quesito qualidade de medicamentos, em especial a questão dos genéricos, a bioequivalência e a estabilidade das formulações. Por outro lado, o item custo é examinado, assim como as implicações que uma demanda diferenciada e voltada para as inovações tecnológicas tem sobre ele. Por fim, discutem-se alternativas, já empregadas em algumas instituições, apresentando-se sugestões cuja finalidade implica na possibilidade de compra de produtos de qualidade aliada à contenção de custos.

Registre d'entrades i eixides per a l'administració pública

OpenAIRE

Oliver Company, Alfredo

2005-01-01

Aquesta memòria representa la definició del meu projecte final de carrera amb una aplicació destinada al registre d'entrades i eixides de l'Administració pública. He emprat eines de plataformes lliures i obertes per al desenvolupament del projecte, amb tecnologia J2EE. A més, hi ha l'objectiu de fer servir i provar arquitectures d'última generació com Enterprise JavaBeans Preview_2 (EJB) 3.0 (5/11/04) per a la lògica de negoci, Hibernate 3.0 alpha (actualment hi ha la beta 1.0 publicada el 20...

Measurement of the mass splittings between the b bar bχb,J(1P) states

International Nuclear Information System (INIS)

Edwards, K.W.; Edwards, K.W.; Bellerive, A.; Bellerive, A.; Janicek, R.; Janicek, R.; MacFarlane, D.B.; MacFarlane, D.B.; Patel, P.M.; Patel, P.M.; Sadoff, A.J.; Ammar, R.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Darling, C.; Davis, R.; Kotov, S.; Kravchenko, I.; Kwak, N.; Zhou, L.; Anderson, S.; Kubota, Y.; Lee, S.J.; ONeill, J.J.; Poling, R.; Riehle, T.; Smith, A.; Alam, M.S.; Athar, S.B.; Ling, Z.; Mahmood, A.H.; Timm, S.; Wappler, F.; Anastassov, A.; Duboscq, J.E.; Fujino, D.; Gan, K.K.; Hart, T.; Honscheid, K.; Kagan, H.; Kass, R.; Lee, J.; Schwarthoff, H.; Spencer, M.B.; Sung, M.; Undrus, A.; Wolf, A.; Zoeller, M.M.; Richichi, S.J.; Severini, H.; Skubic, P.; Bishai, M.; Fast, J.; Hinson, J.W.; Menon, N.; Miller, D.H.; Shibata, E.I.; Shipsey, I.P.; Yurko, M.; Glenn, S.; Kwon, Y.; Lyon, A.L.; Roberts, S.; Thorndike, E.H.; Jessop, C.P.; Lingel, K.; Marsiske, H.; Perl, M.L.; Savinov, V.; Ugolini, D.; Zhou, X.; Coan, T.E.; Fadeyev, V.; Korolkov, I.; Maravin, Y.; Narsky, I.; Shelkov, V.; Staeck, J.; Stroynowski, R.; Volobouev, I.; Ye, J.; Artuso, M.; Azfar, F.; Efimov, A.; Goldberg, M.; He, D.; Kopp, S.; Moneti, G.C.; Mountain, R.; Schuh, S.; Skwarnicki, T.

1999-01-01

We present new measurements of photon energies and branching fractions for the radiative transitions Υ(2S)→γχ b(J=0,1,2) (1P). The masses of the χ b states are determined from the measured radiative photon energies. The ratio of mass splittings between the χ b substates, r≡(M J=2 -M J=1 )/(M J=1 -M J=0 ), with M the χ b mass, provides information on the nature of the b bar b confining potential. We find r(1P)=0.542±0.022±0.024. This value is somewhat lower than the previous world average, but more consistent with the theoretical expectation that r(1P) b (1P) states than for the χ b (2P) states. copyright 1999 The American Physical Society

Transient photoelectron spectroscopy of the dissociative Br2(1Piu) state.

Science.gov (United States)

Strasser, Daniel; Goulay, Fabien; Leone, Stephen R

2007-11-14

Photodissociation of bromine on the Br2(1Piu) state is probed with ultrafast extreme ultraviolet (53.7 nm) single-photon ionization. Time-resolved photoelectron spectra show simultaneously the depletion of ground state bromine molecules as well as the rise of Br(2P3/2) products due to 402.5 nm photolysis. A partial photoionization cross-section ratio of atomic versus molecular bromine is obtained. Transient photoelectron spectra of a dissociative wave packet on the excited state are presented in the limit of low-power-density, single-photon excitation to the dissociative state. Transient binding energy shifts of "atomic-like" photoelectron peaks are observed and interpreted as photoionization of nearly separated Br atom pairs on the Br2(1Piu) state to repulsive dissociative ionization states.

Monoclonal antibodies to the major Lolium perenne (rye grass) pollen allergen Lol p I (Rye I).

Science.gov (United States)

Kahn, C R; Marsh, D G

1986-12-01

Thirteen monoclonal antibodies (MAbs) were produced against Lol p I (Rye I), the major Lolium perenne (rye grass) pollen allergen. Spleen cells from A/J and SJL mice immunized with highly purified Lol p I (Lol I) were allowed to fuse with cells from the non-secreting Sp2/0-Ag14 myeloma cell line. Each MAb was analyzed for antigenic specificity by radioimmunoassay (RIA) using 125I-Lol I. The epitope specificities of seven of the MAbs were examined by competitive binding against a labelled standard MAb for the Lol I antigen (Ag). The dissociation constant, Kd, of one MAb (No. 3.2) that was studied most extensively was determined by double Ab RIA to be 3.5 X 10(-6) L/M. This MAb recognized the related 27,000-30,000 Group I glycoproteins found in the pollens of nine other species of grass pollens tested, including weak binding to Bermuda grass Group I (Cyn d I), which by conventional analysis using polyclonal anti-Lol I serum shows no detectable binding. Monoclonal antibody No. 3.2 was coupled covalently to Sepharose 4B and used to prepare highly purified Lol I from a partially purified rye pollen extract. Finally, an RIA was developed which permitted the analysis of the Group I components in rye grass and nine other grass pollen species. The latter assay is likely to prove useful in the standardization of grass pollen extracts according to their Group I contents.

A temática homossexual na publicidade de massa para público gay e não-gay: conflito entre representação e estereótipos

OpenAIRE

Adriana Tulio Baggio

2013-01-01

RESUMO O número crescente de anúncios publicitários com temática homossexualmasculina no Brasil pode refletir aspectos sociais, como a liberação decostumes, e econômicos, já que esse público é atrativo para as empresas. Estetrabalho consiste na análise de alguns destes anúncios e das reações a eles porparte do público, homossexual ou não. Com base na investigação, foi possívelperceber que anúncios para o público gay ainda são raros na mídia não dirigidaa esse público. Observou-se também que, ...

Sea-level rise: towards understanding local vulnerability

Science.gov (United States)

Rahmstorf, Stefan

2012-06-01

even modest sea-level rise. Losing just 1% of the present continental ice would raise sea level globally by about 75 cm—a tiny amount in the perspective of palaeoclimate history, e.g. the 120 m rise at the end of the last ice age, but a large amount in terms of impacts on human society. We should do everything we can to limit global warming and thereby sea-level rise to a manageable level. References Arctic Monitoring and Assessment Programme 2011 Snow, Water, Ice and Permafrost in the Arctic (Oslo: AMAP) Church J A and White N J 2006 A 20th century acceleration in global sea-level rise Geophys. Res. Lett. 33 L01602 IPCC 2007 Climate Change 2007: The Physical Science Basis. The Fourth Assessment Report of the Intergovernmental Panel on Climate Change ed S Solomon et al (Cambridge: Cambridge University Press) Levermann A, Griesel A, Hofmann M, Montoya M and Rahmstorf S 2005 Dynamic sea level changes following changes in the thermohaline circulation Clim. Dyn. 24 347-54 Mitrovica J X, Tamisiea M E, Davis J L and Milne G A 2001 Recent mass balance of polar ice sheets inferred from patterns of global sea-level change Nature 409 1026-9 Rahmstorf S, Cazenave A, Church J A, Hansen J E, Keeling R F, Parker D E and Somerville C J 2007 Recent climate observations compared to projections Science 316 709 Rahmstorf S, Perrette M and Vermeer M 2011 Testing the robustness of semi-empirical sea level projections Clim. Dyn. at press (doi:10.1007/s00382-011-1226-7) Scientific Committee on Antarctic Research 2009 Antarctic Climate Change and the Environment (Cambridge: Scott Polar Research Institute) Strauss B, Ziemlinski R, Weiss J and Overpeck J T 2012 Tidally-adjusted estimates of topographic vulnerability to sea level rise and flooding for the contiguous United States Environ. Res. Lett. 7 014033 Tebaldi C, Strauss B and Zervas C 2012 Modelling sea level rise impacts on storm surges along US coasts Environ. Res. Lett. 7 014032 US Army Corps of Engineers 2011 Sea-Level Change

GREAT I: A Study of the Upper Mississippi River. Volume 3. Material and Equipment Needs, Commercial Transportation.

Science.gov (United States)

1980-09-01

Cd r - 41J r 0 2 5 4 O , 04 -0.0 00q w C6 0 0 w 4- w o1 0 ~ 41 02 H0~ 002 4 W-" cc a.0 u : 1 0 - td c EI-4 d) a 400 JJ 04 ,4 004p0Cu0 9: o41 V 02.oE...F cryoni .1 F r) TVpm 2 !ymnr + rnf Tm qmrn A ;01 MI 9 (IQ I A TV ; ’A Hi~ - 1 AiFf 0 P m T 0 1 IK T N r 9 I F ( APA ,PP *r i IHq ~ I r T 1) % I P -. l...ri v , tl -,,: a: Td , maximize cost effectiven’ss. For many years these historical practices provid-d a dc-hndah] h¢onne] liii satisfied the

High performance parallel I/O

CERN Document Server

Prabhat

2014-01-01

Gain Critical Insight into the Parallel I/O EcosystemParallel I/O is an integral component of modern high performance computing (HPC), especially in storing and processing very large datasets to facilitate scientific discovery. Revealing the state of the art in this field, High Performance Parallel I/O draws on insights from leading practitioners, researchers, software architects, developers, and scientists who shed light on the parallel I/O ecosystem.The first part of the book explains how large-scale HPC facilities scope, configure, and operate systems, with an emphasis on choices of I/O har

Impedance spectroscopy of Ba3Sr2DyTi3V7O30 ceramic

Indian Academy of Sciences (India)

Administrator

Polycrystalline sample of Ba3Sr2DyTi3V7O30 was prepared at 950°C using a high-temperature solid-state ... Introduction. Though a large number of ferroelectric oxides of different .... change in its shape with rise in temperature suggesting a change in the .... Singh K S, Sati R and Choudhary R N P 1992 J. Mater. Sci. Lett.

Transient heat transfer in a directly-irradiated solar chemical reactor for the thermal dissociation of ZnO

International Nuclear Information System (INIS)

Mueller, R.; Lipinski, W.; Steinfeld, A.

2008-01-01

A numerical and experimental investigation is carried out in a solar thermochemical reactor for the thermal dissociation of ZnO at 2000 K using concentrated solar energy. The reactor consists of a cavity-receiver lined with ZnO particles and directly exposed to high-flux irradiation. A transient heat transfer model is formulated to link the rate of radiation, convection, and conduction heat transfer to the reaction kinetics. The radiosity and Monte Carlo methods are applied to obtain the distribution of net radiative fluxes at the internal surfaces of the reactor cavity and at the surface of the ZnO bed. Validation is accomplished in terms of the calculated and measured transient temperature profiles and chemical reaction rates

Measurement of the thermal conductivity of liquid D2O by the transient hot-wire method

International Nuclear Information System (INIS)

Nagasaka, Y.; Hiraiwa, H.; Nagashima, A.

1990-01-01

The measurement of the thermal conductivity of liquid D 2 O (heavy water) started in 1951. Since then, many researchers have measured the thermal conductivity of heavy water mainly with the aid of steady-state methods such as the parallel plate method and the concentric cylinder method. It should be noted here that even in the case of pure H 2 O or D 2 O enclosed in metallic vessel for a couple of days, the electrical conductivity seems to be not low enough for precise transient hot-wire measurements. The purpose of this paper is to obtain precise thermal conductivity data of liquid D 2 O which can be the reference standard values by the transient hot-wire method. The temperature range covered was 4 degrees C to 80 degrees C with pressure up to 40 MPa and the experimental data have an estimated accuracy of ±0.5%

Krymskokaraimska wersja Melukhat Sha’ul. Wydanie krytyczne i analiza językoznawcza

OpenAIRE

Smętek, Dorota

2012-01-01

Wydział Neofilologii: Katedra Studiów Azjatyckich Rozprawa doktorska udostępnia w wydaniu krytycznym dramat p.t. Melukhat Sha’ul znajdujący się w krymskokaraimskim rękopisie zwanym medżumą i jest pierwszym opracowaniem naukowym tego dzieła. Oryginał rękopisu, o numerze VI-3/22, znajduje się na Krymie. Został on spisany przez Samuela Kohena w drugiej połowie dziewiętnastego wieku, to znaczy w roku 1876 z krótkimi fragmentami zapisanymi w 1875 i 1879. Rękopis zawiera turkijskie tłumaczenie d...

Observation of pentaquark resonances in Λb → J/ψK−p decays

Directory of Open Access Journals (Sweden)

Adeva B.

2016-01-01

Full Text Available LHCb has recently reported the observation of exotic structures in the J/ψp channel, in Λb → J/ψK−p decay, which we discuss here and refer to as charmoniumpentaquarkstates. The data sample corresponds to an integrated luminosity of 3.0 fb−1acquired with the LHCb detector from 7 and 8 TeV pp collisions. An amplitude analysisof the three-body final state reproduces the two-body mass and angular distributions. Toobtain a satisfactory fit of the structures seen in the J/ψp mass spectrum, it is necessaryto include two Breit-Wigner amplitudes that each describe a resonant state. Details aregiven on the significance, and prefered quantum numbers, of these two resonances.

Ab Initio f values for Fe II J=9/2 ->9/2^o transitions

Science.gov (United States)

Beck, Donald

2005-05-01

Relativistic configuration interaction f values have been obtained for 264 transitions between the lowest 12 J=9/2 and the 22 J=9/2^o levels. Length and velocity gauges agree to 3.8% for in-shell transitions and 10.0% for shell jump transitions. Two J=9/2^o levels are so nearly degenerate that it was necessary to introduce a semi-empirical correction to produce the correct level ordering. The results are in overall good agreement with the semi-empirical results of Kurucz ootnotetextR. L. Kurucz, http://kurucz.harvard.edu/atoms/2601/ and Raassen ootnotetextA. J. J. Raasen, ftp://ftp.wins.uva.nl/pub/orth/iron/FeII.E1 (1999). An efficient method of including magnetic Breit effects in the energy matrix is presented.

Avaliação da dor pós-operatória em dentes tratados endodonticamente

OpenAIRE

Ademar Luiz Waskievicz; Flávia Baldissarelli; José Roberto Vanni; Mateus Silveira Martins Hartmann; Volmir João Fornari

2015-01-01

O sucesso do tratamento endodôntico está diretamente relacionado ao domínio da anatomia e ao controle da infecção endodôntica. Alguns fatores, como erros de procedimento (sobre instrumentação, obturação, desvios apicais e perfurações) podem causar dor pós-operatória. Objetivo: Este trabalho teve como objetivo avaliar a dor pós-operatória em dentes que foram tratados endodonticamente na Unidade de Pós-Graduação em Odontologia da Faculdade Meridional – IMED CEOM, de Passo Fundo, no período de j...

Transient photoresponse in amorphous In-Ga-Zn-O thin films under stretched exponential analysis

Science.gov (United States)

Luo, Jiajun; Adler, Alexander U.; Mason, Thomas O.; Bruce Buchholz, D.; Chang, R. P. H.; Grayson, M.

2013-04-01

We investigated transient photoresponse and Hall effect in amorphous In-Ga-Zn-O thin films and observed a stretched exponential response which allows characterization of the activation energy spectrum with only three fit parameters. Measurements of as-grown films and 350 K annealed films were conducted at room temperature by recording conductivity, carrier density, and mobility over day-long time scales, both under illumination and in the dark. Hall measurements verify approximately constant mobility, even as the photoinduced carrier density changes by orders of magnitude. The transient photoconductivity data fit well to a stretched exponential during both illumination and dark relaxation, but with slower response in the dark. The inverse Laplace transforms of these stretched exponentials yield the density of activation energies responsible for transient photoconductivity. An empirical equation is introduced, which determines the linewidth of the activation energy band from the stretched exponential parameter β. Dry annealing at 350 K is observed to slow the transient photoresponse.

Bank of Georgiale jäi Gruusia kitsaks / Romet Kreek

Index Scriptorium Estoniae

Kreek, Romet, 1972-

2008-01-01

Gruusia suurimale pangale Bank of Georgia jäi koduturg kitsaks ning pank teatas Valgevene panga ostmisest ja sealsele turule laienemisest. Diagramm: Bank of Georgia aktsia hind. Vt. samas: Bank of Georgia ja Belarusky Narodny Bank majandusnäitajad; Taust

Manifesto dos professores públicos de instrucção primária da corte (1871

Directory of Open Access Journals (Sweden)

Daniel Cavalcanti de Albuquerque Lemos

2011-07-01

Full Text Available <p>Na década de 1870, a Corte brasileira se movimentava intensamente. O fim da guerra do Paraguai parecia inaugurar um novo tempo de reformas. Idéias, como o abolicionismo e a República, assumiam um novo vigor. Novos jornais eram criados, o que aumentava a circulação dos debates. Era um momento de esperança. Diversos projetos disputavam espaços e apresentavam diferentes concepções relativas ao processo de construção do Estado e da nacionalidade. Nesse cenário, um grupo de professores públicos primários da Corte Imperial se reuniu e publicou, no formato de um pequeno livro de vinte e uma páginas, o Manifesto dos professores públicos de instrucção primária da corte. O manifesto é datado de 28 de julho de 1871 e foi impresso pela Tipografia de J. Villeneuve e Cia. 140 anos depois da publicação existe apenas um único exemplar conhecido, localizado na Biblioteca Nacional do Rio de Janeiro.p>

Evaluation of thermodynamic and kinetic stability of P-type transparent conducting oxide, SrCu2O2 under various oxygen partial pressures

International Nuclear Information System (INIS)

Sugimoto, Takayuki; Yanagawa, Atsumi; Hashimoto, Takuya

2012-01-01

Highlights: ▶ Thermodynamic and kinetic stabilities of SrCu 2 O 2 under various P(O 2 ) was estimated. ▶ The reaction rate for decomposition decreased with decreasing temperature and P(O 2 ). ▶ The activation energy for decomposition of SrCu 2 O 2 was estimated to be 66 kJ/mol. ▶ SrCu 2 O 2 showed less stability than those of other transparent p-type semiconductors. - Abstract: Kinetic stability of transparent p-type conducting oxide, SrCu 2 O 2 , has been evaluated by using X-ray diffraction measurement and thermogravimetry. It was revealed that SrCu 2 O 2 decomposed to mixture of CuO and Sr 14 Cu 24 O 41 in air at temperatures above 300 °C. The decomposition reaction rate can be successfully explained by kinetic model assuming first-order chemical reaction. The rate constant can be suppressed with decreasing temperature and oxygen partial pressure. The activation energy for decomposition reaction of SrCu 2 O 2 calculated from Arrhenius plot was 66 kJ/mol, which was lower than those of other transparent p-type semiconductors such as CuAlO 2 and CuGaO 2 . The low decomposition temperature and activation energy for decomposition indicate that chemical stability of SrCu 2 O 2 is far lower than those of other p-type conducting oxides.

ESTUDO DO APROVEITAMENTO DAS VÍSCERAS DOS MOLUSCOS ESCARGOT (<i>Achatina fulicai> E ARUÁ (<i>Pomacea lineatai> PARA INCORPORAÇÃO EM RAÇÃO ANIMAL

Directory of Open Access Journals (Sweden)

S. E. R. BARBOZA

2008-09-01

Full Text Available <p class="MsoNormal" style="margin: 0cm 0cm 0pt; line-height: normal; text-align: justify; mso-layout-grid-align: none;"> O objetivo deste trabalho foi estudar o aproveitamento das vísceras - subprodutos, dos moluscos escargot e aruá. As vísceras foram processadas na forma de farinha e suas características físico-químicas (composição centesimal, cálcio, fósforo, digestibilidade em pepsina, índice de acidez e microbiológicas (<i>Salmonella> sp foram comparadas aos padrões de qualidades exigidas pela Legislação (6.198, de 26/12/74, e o Decreto 76.986, de 06/01/76 do Ministério da Agricultura e Abastecimento para a comercialização de produtos destinados à alimentação animal. Os resultados obtidos permitiram verificar que as farinhas de vísceras de ambas espécies podem ser utilizadas como matérias primas, constituindo ótimas fontes de nutrientes para a incorporação em rações animais. p>

Krwotok położniczy – zasady współpracy położnika i anestezjologa

Directory of Open Access Journals (Sweden)

Elżbieta Nowacka

2012-04-01

Full Text Available Krwotok położniczy wciąż jest jedną z najczęstszych przyczyn zgonów ciężarnych irodzących. Prawie 88% kobiet umiera w ciągu pierwszych czterech godzin od momentu jego wystąpienia. Znajomość mechanizmów regulują‑ cych homeostazę ustroju ciężarnej ma ogromne znaczenie w postępowaniu terapeutycznym w przypadku wystą‑ pienia krwotoku okołoporodowego. O tym, jak trudno rozpoznać i zdefiniować krwotok położniczy, dowodzi obecność kilkunastu różnych jego definicji. Z punktu widzenia zmian hemodynamicznych, następstw ogólno‑ ustrojowych i konieczności podjęcia określonych decyzji terapeutycznych bardzo użyteczne wydają się pojęcia oceniające szybkość utraty wokreślonym przedziale czasowym: skumulowana utrata krwi wynosząca 150 ml/min lub 1,5 ml/kg m.c./min oraz utrata 50% objętości krwi krążącej w ciągu 3 godzin. Rokowanie w krwotoku położ‑ niczym zależy od wielu elementów, do których zaliczamy: szybkie rozpoznanie, powiadomienie i wdrożenie algo‑ rytmu postępowania terapeutycznego oraz efektywne działanie interdyscyplinarne różnych zespołów biorących udział w procesie diagnostyczno‑leczniczym. Niezbędna jest jednoczasowa, efektywna współpraca doświadczo‑ nego zespołu anestezjologicznego, ginekologiczno‑położniczego, bloku operacyjnego, zespołów pracowni dia‑ gnostyczno‑laboratoryjnych oraz regionalnego centrum krwiodawstwa. Skoordynowanie pracy dużej liczby ludzi, często „rozrzuconych” w strukturach organizacyjnych szpitala na różnych piętrach lub w oddzielnych budyn‑ kach, jest niezmiernie trudne. Opracowanie algorytmu postępowania uwzględniającego kolejność i sposób powiadamiania oraz wdrażanie określonych procedur w poszczególnych jednostkach organizacyjnych decydu‑ ją o przeżyciu pacjentki i późniejszej jakości życia. Większość czynności w ciężkim krwotoku położniczym (resu‑ scytacja, monitorowanie, opanowywanie