Browsing Research publications by Title

Now showing items 12558-12577 of 23067

    • Low-lying dipole response in the relativistic quasiparticle time blocking approximation and its influence on neutron capture cross sections 

      Litvinova, E.; Loens, H. P.; Langanke, K.; Martinez-Pinedo, G.; Rauscher, T.; Ring, P.; Thielemann, Friedrich-Karl; Tselyaev, V. (2009-05-15)
      We have computed dipole strength distributions for nickel and tin isotopes within the Relativistic Quasiparticle Time Blocking Approximation (RQTBA). These calculations provide a good description of data, including the ...

    • Low-mass bursty galaxies in JADES efficiently produce ionizing photons and could represent the main drivers of reionization 

      Simmonds, C.; Tacchella, S.; Hainline, K.; Johnson, B. D.; McClymont, W.; Robertson, B.; Saxena, Aayush; Sun, Fengwu; Witten, C.; Baker, William M.; Bhatawdekar, R.; Boyett, K.; Bunker, A. J.; Charlot, S.; Curtis-Lake, E.; Egami, E.; Eisenstein, D. J.; Hausen, R.; Maiolino, R.; Maseda, M. V.; Scholtz, J.; Williams, C. C.; Willot, C.; Witstok, J. (2024-01-01)
      We use deep imaging from the JWST Advanced Deep Extragalactic Survey (JADES) to study the evolution of the ionizing photon production efficiency, ζion. We estimate ζion for a sample of 677 galaxies at z ∼4-9 using NIRCam ...

    • Low-mass eclipsing binaries in the WFCAM Transit Survey : The persistence of the M-dwarf radius inflation problem 

      Cruz, Patricia; Diaz, Marcos; Birkby, Jayne; Barrado, David; Sipöcz, Brigitta; Hodgkin, Simon (2018-06-01)
      We present the characterization of five new short-period low-mass eclipsing binaries (LMEBs) from the WFCAM Transit Survey. The analysis was performed by using the photometric WFCAM J-mag data and additional low- and ...

    • A low-mass neutron flux monitor for the n_TOF facility at CERN 

      Mastinu, P. F.; Abbondanno, U.; Aerts, G.; Alvarez, H.; Andriamonje, S.; Angelopoulos, A.; Assimakopoulos, P.; Bacri, C. O.; Badurek, G.; Baumann, P.; Becvar, F.; Beer, H.; Benlliure, J.; Berthier, B.; Berthomieux, E.; Boffi, S.; Borcea, C.; Boscolo-Marchi, E.; Bustreo, N.; Calvino, P.; Cano-Ott, D.; Capote, R.; Carlson, P.; Cennini, P.; Chepel, V.; Chiaveri, E.; Coceva, C.; Colonna, N.; Cortes, G.; Cortina, D.; Couture, A.; Cox, J.; Dababneh, S.; Dahlfors, M.; David, S.; Dolfini, R.; Domingo-Pardo, C.; Duran, R.B.; Eleftheriadis, C.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Lourenco, L.; Ferreira-Marques, R.; Frais-Koelbl, H.; Furman, W.I.; Giomataris, Y.; Goncalves, I. F.; Gonzalez-Romero, E.; Rauscher, T.; nTOF Collaboration (2004-09)
      A small-mass system has been developed for monitoring the flux of neutrons with energy up to 1 MeV at the new time-of-flight facility at CERN, n_TOF. The monitor is based on a thin Mylar foil with a Li-6 deposit, placed ...

    • Low-mass Objects in Moving Groups 

      Galvez-Ortiz, M. C.; Clarke, J. R. A.; Pinfield, D.J.; Folkes, S. L.; Jenkins, J. S.; Perez, A. E. Garcia; Burningham, B.; Day-Jones, A. C.; Jones, H.R.A. (Astronomical Society of the Pacific, 2010)
      We present here the kinematic study of part of a 132 target sample of low-mass objects, previously selected by photometric and astrometric criteria as possible members to five young moving groups (MGs): Local Association ...

    • A low-mass planet candidate orbiting Proxima Centauri at a distance of 1.5 AU 

      Damasso, M.; Del Sordo, Fabio; Anglada Escude, Guillem; Giacobbe, P.; Sozzetti, Alessandro; Morbidelli, L.; Pojmański, G.; Barbato, Domenico; Butler, R. P.; Jones, Hugh; Hambsch, Franz-Josef; Jenkins, James S.; Lopez-Gonzalez, Maria J.; Morales, Nicolas; Peña Rojas, Pablo A.; Rodriguez-Lopez, Cristina; Rodriguez, Eloy; Amado, Pedro J.; Anglada, Guillem; Feng, F.; Gómez, Jose F. (2020-01-15)
      Our nearest neighbor, Proxima Centauri, hosts a temperate terrestrial planet. We detected in radial velocities evidence of a possible second planet with minimum mass m c sin i c = 5.8 ± 1.9 M ⊕ and orbital period P c = ...

    • Low-Mass X-ray Binaries and Globular Clusters in Centaurus A 

      Jordan, A.; Sivakoff, G.R.; McLaughlin, D.E.; Blakeslee, J.P.; Evans, D.A.; Kraft, R.P.; Hardcastle, M.J.; Peng, E.W.; Cote, P.; Croston, J.H.; Juett, A.M.; Minniti, D.; Raychaudhury, S.; Sarazin, C.L.; Worrall, S.M.; Harris, W.E.; Woodley, K.A.; Birkinshaw, M.; Brassington, Nicola; Forman, W.R.; Jones, C.; Murray, S.S. (2007)
      We present results of Hubble Space Telescope and Chandra X-Ray Observatory observations of globular clusters (GCs) and low-mass X-ray binaries (LMXBs) in the central regions of Centaurus A. Out of 440 GC candidates, we ...

    • Low-mass X-ray binaries and globular clusters streamers and ARCS in NGC 4278 

      D'Abrusco, R.; Fabbiano, G.; Brassington, Nicola (2014-03-01)
      We report significant inhomogeneities in the projected two-dimensional spatial distributions of low-mass X-ray binaries (LMXBs) and globular clusters (GCs) of the intermediate mass elliptical galaxy NGC 4278. In the inner ...

    • Low-metallicity inhibition of type Ia supernovae and galactic and cosmic chemical evolution 

      Kobayashi, Chiaki; Tsujimoto, T; Nomoto, K; Hachisu, I; Kato, M (1998-08-20)
      We introduce a metallicity dependence of the Type Ia supernova (SN Ia) rate into the Galactic and cosmic chemical evolution models. In our SN Ia progenitor scenario, the accreting white dwarf (WD) blows a strong wind to ...

    • Low-Power Neuromorphic Hardware for Signal Processing Applications : A review of architectural and system-level design approaches 

      Rajendran, Bipin; Sebastian, Abu; Schmuker, Michael; Srinivasa, Nayaran; Eleftheriou, Evangelos (2019-11-01)
      Machine learning has emerged as the dominant tool for implementing complex cognitive tasks that require supervised, unsupervised, and reinforcement learning. While the resulting machines have demonstrated in some cases ...

    • Low-power, high-linearity transconductor with a high tolerance for process and temperature variations 

      Zhao, Jing; Sun, Yichuang; Nie, Guigen; Simpson, Oluyomi; Xu, Weilin (2020-11-18)
      A novel scheme for tunable complementary metal–oxide–semiconductor (CMOS) transconductor robust against process and temperature (PT) variations is presented. The proposed configuration is a voltage controlled circuit based ...

    • Low-pressure gas chromatography ion trap mass spectrometry for the fast determination of polycyclic aromatic hydrocarbons in air samples 

      Ravindra, K.; Godoi, A.F.L.; Bencs, L.; Van Grieken, R. (2006)

    • Low-pressure gas chromatography: Recent trends and developments 

      Ravindra, K.; Dirtu, A.C.; Covaci, A. (2008)

    • A Low-Profile Beam-Steering Reflectarray with Integrated Leaky-Wave Feed and 2-Bit Phase Resolution for Ka-band SatCom 

      Zhang, Qiaoshan; Zhang, Mingtao; Shi, Xiaowei; Gao, Steven; Luo, Qi; Chen, Lei; Wan, Jixiang; Wang, Xudong (2021-09-15)
      A novel reflect array (RA) with ultra-low-profile and 2-bit phase quantization beam-steering ability is presented in this paper. To reduce the profile, a Leaky-wave feed is used to excite the RA with enhanced illumination ...

    • Low-Profile Wideband Circularly Polarized Array Antennas Using Integrated Half-Power Quadrature Power Divider 

      Wen, Lehu; Gao, Steven; Luo, Qi; Hu, Wei; Sanz-Izquierdo, Benito; Yang, Xue-Xia (2022-04-11)
      Low-profile wideband circularly polarized (CP) array antennas using integrated half-power quadrature power divider (HP-QPD) are presented. A novel HP-QPD is first proposed as an important design concept for CP radiation. ...

    • Low-resolution near-infrared spectroscopic signatures of unresolved ultracool companions to M dwarfs 

      Cook, Neil; Pinfield, D. J.; Marocco, F.; Burningham, B.; Jones, H. R. A.; Frith, J.; Zhong, J.; Luo, A. L.; Qi, Z. X.; Cowan, N. B.; Gromadzki, M.; Kurtev, R.G.; Guo, Y. X.; Wang, Y. F.; Song, Y. H.; Yi, Z. P.; Smart, R. L. (2017-06-01)
      We develop a method to identify the spectroscopic signature of unresolved L-dwarf ultracool companions, which compares the spectra of candidates and their associated control stars using spectral ratio differences and ...

    • Low-resolution VLT spectroscopy of GRBs 991216, 011211 and 021211 

      Vreeswijk, P.M.; Smette, A.; Fruchter, S.; Palazzi, E.; Rol, E.; Wijers, R.A.M.J.; Kouveliotou, C.; Kaper, L.; Pian, E.; Masetti, N.; Frontera, F.; Hjorth, J.; Gorosabel, J.; Piro, L.; Fynbo, J.; Jakobsson, P.; Watson, D.; O'Brien, P.T.; Ledoux, C. (2006)

    • Low-Speed Aerodynamic Analysis Using Four Different Turbulent Models of Solver of a Wind Turbine Shroud 

      Ngouani Siewe, Micky; CHEN, Yong Kang; Day, Rodney; David-West, Opukuro (Springer Nature, 2021-04-30)
      This study presents the effect of four different turbulent models of solver on the aerodynamic analysis of a shroud at wind speed below 6 m/s. The converting shroud uses a combination of a cylindrical case and an inverted ...

    • Low-velocity impact behaviour of woven laminate plates with fire retardant resin 

      Grasso, Marzio; xu, yigeng; Ramji, Amit; Zhou, Gang; Chrysanthou, Andreas; Haritos, George; Chen, Yong Kang (2019-08-15)
      The understanding of the damage mechanisms for woven laminate plates under low-velocity impact is challenging as the damage mechanisms at the interface of adjacent layers are dominated by the fibre architecture. This work ...

    • Lower limb coordination and stiffness during landing from volleyball block jumps 

      Hughes, G.; Watkins, J. (2008)
      The aim of the study was to investigate lower limb coordination and stiffness in five male and five female university volleyball players performing block jump landings. Coordination was assessed using angle – angle plots ...