Emission lines and optical continuum in low-luminosity radio galaxies

We present spectroscopic observations of a complete sub-sample of 13 low-luminosity radio galaxies selected from the 2Jy sample. The underlying continuum in these sources is carefully modelled in order to make a much-needed comparison between the emission line and continuum properties of FRIs with those of other classes of radio sources. We find that 5 galaxies in the sample show a measurable UV excess: 2 of the these sources are BL Lacs and in the remaining 3 galaxies we argue that the most likely contributor to the UV excess is a young stellar component. Excluding the BL Lacs, we therefore find that \~30% of the sample show evidence for young stars, which is similar to the results obtained for higher luminosity samples. We compare our results with far-infrared measurements in order to investigate the far-infrared-starburst link. The nature of the optical-radio correlations is investigated in light of this new available data and, in contrast to previous studies, we find that the FRI sources follow the correlations with a similar slope to that found for the FRIIs. Finally, we compare the luminosity of the emission lines in the FRI and BL Lac sources and find a significant difference in the [OIII] line luminosities of the two groups. Our results are discussed in the context of the unified schemes.Comment: 18 pages, 31 figures, MNRAS in press, (all enquiries to Clive Tadhunter ([email protected])

Study and applications of retrodirective and self-adaptive electromagnetic wave controls to a Mars probe Quarterly report, 1 Oct. - 31 Dec. 1965

Design feasibility and applications of adaptive antenna circuits for deep space communication - antenna concepts, environmental effects, and phase lock loops and adaptive circuitr

Study and applications of retrodirective and self adaptive electromagnetic-wave phase controls to a Mars probe

Computer analyses of retrodirective, and self adaptive antenna phase control techniques for Mars prob

Build it and they will come. Or will they? Golden Perch in Koondrook Perricoota Forest

The Gunbower and Koondrook-Perricoota Forest (KPF) includes a natural floodplain wetland system that has suffered for many years from a lack of water as a result of water extraction practices in the Murray River. The site was targeted with a combination of environmental water allocations and environmental works programs to manage the distribution and retention of water and ultimately improve its ecological health. A major ecological objective for the Gunbower Koondrook-Perricoota Forest is ‘healthy populations of resident native fish in wetlands’. Golden perch, a large-bodied native species utilise similar habitat on the floodplain proper and floodplain channels between nearby Cobram and Yarrawonga and were documented utilising drying waterholes in the vicinity of the nearby Murrumbidgee River as far back as 1917. We report on an acoustic monitoring survey in 2016 when during a natural flood, none of 14 tagged Golden Perch tagged in the adjacent main river channel entered the forest. Yet at the same time, 34 of 44 tagged Common carp moved into the forest when passage became available from rising waters. Further, seven years of consecutive autumn condition monitoring on the KPF floodplain has failed to sample a single golden perch young-of-year in KPF, and only two adults have been sampled within KPF during that time. In addition, intensive electrofishing and fyke netting of the inlet channel during the first managed event in 2014 failed to collect any golden perch, and none were trapped in the fishways. We suggest that it is important that golden perch and other native large-bodied fish continue to be considered when operating the regulators during future events, including monitoring of fish accumulations at the outlet regulator and fishway trapping

Improved conceptual generation and selection with transcranial direct current stimulation in older adults

Normal aging is associated with deficits in various aspects of spoken language production, including idea generation and selection, and involves activity in frontal brain areas including left inferior frontal cortex (LIFG). These conceptual preparation processes, largely involving executive control, precede formulation and articulation stages and are critical for language production. Noninvasive brain stimulation (e.g., transcranial direct current stimulation, tDCS) has proven beneficial for age-related fluency and naming deficits, but this has not been extended to conceptual preparation mechanisms.We investigated whether tDCS could facilitate idea generation and selection in 24 older adults aged 60-80\ua0years. In the first phase, participants completed an idea generation test and a selection test with no stimulation. In the second phase they completed an alternate version of the tests in conjunction with either active or sham stimulation. Active stimulation applied 1-mA anodal tDCS over LIFG for the test duration (10\ua0min).\ua0 Responses were faster following active stimulation than following sham. Furthermore, improvements were specific to test conditions involving novel generation (p\ua0=\ua0.030) and selection (p\ua0=\ua0.001) and were not observed in control conditions for which these mechanisms were minimally involved.\ua0 We concluded that tDCS benefits conceptual preparation mechanisms. This preliminary evidence is an important step for addressing age-related decline in propositional language generation, which is integral to conversational speech. This approach could also be extended toward rehabilitation in neurological patients with deficits in these processes

Comprehensive geriatric assessment for older adults admitted to hospital: meta-analysis of randomised controlled trials

Objective To evaluate the effectiveness of comprehensive geriatric assessment in hospital for older adults admitted as an emergency

Health-Related Fitness and Energy Expenditure in Recreational Youth Rock Climbers 8-16 Years of Age

International Journal of Exercise Science 8(2): 174-183, 2015. Information on the characteristics of youth rock climbers is minimal. The purpose was to 1) Determine the influence of a three-month program of bouldering and vertical rock climbing on the anthropometry and health-related physical fitness of relatively novice youth climbers, and 2) determine whether rock climbing and bouldering in novice youth climbers can provide adequate levels of moderate to vigourous physical activity (US DHHS, 2008). Fifteen participants (11 males and 4 females; mean age = 11.5 ± 2.3 years) from a newly established youth climbing team were assessed twice weekly during their normal two-hour training sessions at a local rock gym. Body composition, flexibility, grip strength, and anthropometric estimates of somatotype were measured in August and November. Heart rate (HR) monitors recorded average activity heart rate (AHR), peak heart rate (HRpeak), and estimated energy expended (EE-kcals) during each climbing session. Basic descriptive statistics were run; repeat measure ANOVAs were used to assess changes between times. Estimated percent body fat did not change, but individual skinfolds (biceps and supraspinale) decreased significantly (

Infrared Diagnostics for the Extended 12 micron Sample of Seyferts

We present an analysis of Spitzer IRS spectroscopy of 83 active galaxies from the extended 12 micron sample. We find rank correlations between several tracers of star formation which suggest that (1) the PAH feature is a reliable tracer of star formation, (2) there is a significant contribution to the heating of the cool dust by stars, (3) the H$_2$ emission is also primarily excited by star formation. The 55-90 vs. 20-30 spectral index plot is also a diagnostic of the relative contribution of Starburst to AGN. We see there is a large change in spectral index across the sample. Thus, the contribution to the IR spectrum from the AGN and starburst components can be comparable in magnitude but the relative contribution also varies widely across the sample. We find rank correlations between several AGN tracers. We search for correlations between AGN and Starburst tracers and we conclude that the AGN and Starburst tracers are not correlated. This is consistent with our conclusion that the relative strength of the AGN and Starburst components varies widely across the sample. Thus, there is no simple link between AGN fueling and Black Hole Growth and star formation in these galaxies. The distribution of Sil 10 micron and 18 micron strengths is consistent with the clumpy torus models of Sirocky et al. We find a rank correlation between the [NeV] 14 micron line and the 6.7 micron continuum which may be due to an extended component of hot dust. The Sy 2s with a Hidden Broad Line Region (HBLR) have a higher ratio of AGN to Starburst contribution to the SED than Sy 2s without an HBLR. This may contribute to the detection of the HBLR in polarized light. The Sy 2s with an HBLR are more similar to the Sy 1s than they are to the Sy 2s without an HBLR