نتایج جستجو برای: late plateau
تعداد نتایج: 220055 فیلتر نتایج به سال:
We present an in-depth study of the late-time near-infrared plateau in Type Ia supernovae (SNe Ia), which occurs between 70-500 d. double existing sample SNe observed during with new observations taken Hubble Space Telescope, Gemini, New Technology 3.5m Calar Alto and Nordic Optical Telescope. Our consists 24 nearby at redshift < 0.025. are able to confirm that no exists Ks band for most normal...
Intensive research on China’s Western Loess Plateau has located 63 Palaeolithic deposits, which together allow the authors to present a general model of hominin occupation from 80 000 to 18 000 years ago. Tools, subsistence and settlement correlate nicely with the climate: the warm wet MIS3 seeing expansion and more organised acquisition of quartz, and the Late Glacial Maximum that followed, a ...
V4444 Sgr (Nova Sgr 1999) has been recently suggested to be a possible recurrent nova based on the detection of the preexisting dust, which may have been formed in a previous outburst. We examined this possibility using the available outburst observations, including the VSNET observations. We also noticed that this nova was recorded in the OGLE II public photometric database, which covered both...
This paper addresses the issue of tonal perception as it relates to special configurations, i.e. fundamental frequency (F0) plateaux. We here review a series of perceptual experiments in two different languages, Italian (Naples and Pisa variety) and German. A subset of the auditory stimuli employed in these studies contained a high F0 plateau, which had to be either identified for a specific to...
...............................................................................................................................iv Chapter 1: Introduction ................................................................................................1 Chapter 2: Adjoint Method in Mantle Convection .............................................5 2.1 Theoretical Basis of the Adjoint Method ..........
Recent climate and environment over the Tibetan Plateau (TP) have undergone significant changes, dominated by variations in Westerlies Indian summer monsoon. However, long-term shifts atmospheric circulation during transitional seasons are still lacking. Here we investigate modern distribution of Tsuga pollen central-western TP confirm it as an indicator variable spring. By combining our record...
The annual cycle of extra-tropical surface air temperature is an important component of the Earth's climate system. Over the past decades, a reduced amplitude of this mode has been observed in some regions. Although attributed to anthropogenic forcing, it remains unclear when dampening of the annual cycle started. Here we use a residual series of tree-ring width and maximum latewood density fro...
The role of pitch pattern shape and perceptual target location is investigated here by means of an identification test involving two pitch accent categories in Pisa Italian. The perception test concerned the pitch accents used in contrastive and utterance-initial broad focus and was performed by asking subjects to identify two continua composed of peak and plateau stimuli whose alignment and sc...
Background CMR R2* is the gold standard for monitoring cardiac iron overload in patients with hemoglobinopathies. The R2* value is obtained by fitting the signal at different echo times (TEs) to an appropriate decay model. Patients with heavy cardiac iron burden (R2*>100 Hz) exhibit rapid signal, leading to a plateau in the later images. Two approaches have been used to address this. The first ...
The appearance of detritus shed from mountain ranges along the northern margin of the Tibetan Plateau heralds the Cenozoic development of high topography. Current estimates of the age of the basal conglomerate in the Qaidam basin place this event in Paleocene-Eocene. Here we present new magnetostratigraphy and mammalian biostratigraphy that refine the onset of basin fill to ∼25.5 Myr and reveal...
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