1,747,327 research outputs found
Ichiro Doi
No full textTranscript (typescript, 28 pages) of an interview on July 2, 1984, by Leslie Kelen with Ichiro Doi, who was born in Utah in 1918 and grew up in Salt Lake City. Mr. Doi (b. 1917) talks about his parents, farming, the flu epidemic of 1918, and emigrant life on the West Side in Salt Lake City. He recalls the multi-cultural neighborhood of his childhood and gang activity. Other topics covered include the Athens and West Side hotels (which were owned by his family), the Buddhist Church, the Japanese Christian Church, courting his wife, the Eagle laundry, and life in Salt Lake City in the months following Pearl Harbo
Doi et al. Table with individual data
No full textThis file contains the data underlying the figures in:
Hiroki Doi, Taei Matsui, Johannes M. Dijkstra, Atsushi Ogasawara, Yuki Higashimoto, Seiji Imamura, Tamae Ohye, Hiromu Takematsu, Itsuro Katsuda, and Hidehiko Akiyama
Andrographolide, isolated from Andrographis paniculata, induces apoptosis in monocytic leukemia and multiple myeloma cells via augmentation of reactive oxygen species production
Journal of publication: F1000Researc
Evidence for a Nuclear Radio Jet and its Structure down to < 100 Schwarzschild Radii in the Center of the Sombrero Galaxy (M 104, NGC 4594)
No full textThe Sombrero galaxy (M 104, NGC 4594) is associated with one of the nearest low-luminosity active galactic nuclei (AGNs). We investigated the detailed radio structure of the Sombrero nucleus using high-resolution, quasi-simultaneous, multi-frequency, phase-referencing Very Long Baseline Array observations. We obtained high-quality images of this nucleus at seven frequencies, where those at 15, 24, and 43 GHz are the first clear very long baseline interferometry detections. At 43 GHz, the nuclear structure was imaged on a linear scale under 0.01 pc or 100 Schwarzschild radii, revealing a compact, high-brightness-temperature (gsim 3 × 109 K) radio core. We discovered the presence of the extended structure emanating from the core on two sides in the northwest and southeast directions. The nuclear radio spectra show a clear spatial gradient, which is similar to that seen in more luminous AGNs with powerful relativistic jets. Moreover, the size and position of the core tend to be frequency dependent. These findings provide evidence that the central engine of the Sombrero is powering radio jets and the jets are overwhelming the emission from the underlying radiatively inefficient accretion flow over the observed frequencies. Based on these radio characteristics, we constrained the following physical parameters for the M 104 jets: (1) the northern side is approaching, whereas the southern one is receding; (2) the jet viewing angle is relatively close to our line-of-sight (lsim 25°) and (3) the intrinsic jet velocity is highly sub-relativistic (lsim 0.2c). The derived pole-on nature of the M 104 jets is consistent with the previous argument that this nucleus contains a true type II AGN, i.e., the broad line region is actually absent or intrinsically weak if the plane of the circumnuclear torus is perpendicular to the jet axis
Disagreement plots and the intraclass correlation in agreement studies
No full textAlthough disagreement and the intraclass correlation have been covered previously, several variants of both have been proposed. This chapter introduces readers to several variants of the disagreement plot and the classification of the intraclass correlation coefficient and the concept of repeatability in agreement studies
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
VLBI Observations of the Jet in M 87 during the Very High Energy gamma-Ray Flare in 2010 April
No full textWe report on the detailed radio status of the M 87 jet during the very high energy (VHE) γ-ray flaring event in 2010 April, obtained from high-resolution, multi-frequency, phase-referencing Very Long Baseline Array observations. We especially focus on the properties of the jet base (the radio core) and the peculiar knot HST-1, which are currently favored as the γ-ray emitting sites. During the VHE flaring event, the HST-1 region remains stable in terms of its structure and flux density in the optically thin regime above 2 GHz, being consistent with no signs of enhanced activities reported at X-ray for this feature. The radio core shows an inverted spectrum at least up to 43 GHz during this event. Astrometry of the core position, which is specified as ~20 R s from the central engine in our previous study, shows that the core position is stable on a level of 4 R s. The core at 43 and 22 GHz tends to show slightly (~10%) higher flux level near the date of the VHE flux peak compared with the epochs before/after the event. The size of the 43 GHz core is estimated to be ~17 R s, which is close to the size of the emitting region suggested from the observed timescale of rapid variability at VHE. These results tend to favor the scenario that the VHE γ-ray flare in 2010 April is associated with the radio core
Physical properties of the nuclear region in Seyfert galaxies derived from observations with the European VLBI Network
No full textWe report on sensitive dual-frequency (1.7 and 5?GHz) European very long baseline interferometry Network observations of the central region of nine Seyfert galaxies. These sources are among the faintest and least luminous members of a complete sample of nearby (d < 22?Mpc) low-luminosity active galactic nuclei. We detect radio emission on milliarcsecond scale in the nuclei of four galaxies, while for the other five sources we set an upper limit of < 100?mu Jy. In three sources, namely NGC?3227, NGC?3982 and NGC?4138, radio emission is detected at both 1.7 and 5?GHz and it is resolved in two or more components. We describe the structural and spectral properties of these features; we find that in each of these three nuclei there is one component with high brightness temperature (typically TB > 107.5?K) and flat/intermediate spectral index (0.3 = a = 0.6, S(?) ?-a), accompanied by secondary steep spectrum extended components. In these cases, non-thermal emission from jets or outflows is thus the most natural explanation. A faint feature is detected in NGC?4477 at 5?GHz; keeping in mind the modest significance of this detection ( 5?s), we propose the hot corona as the origin of non-thermal emission, on the basis of the unrealistic magnetic field values required by synchrotron self-absorption. Finally, the five non-detected nuclei remain elusive and further observations on intermediate scales will be necessary to investigate their nature
Studies on type material from Kützing's diatom collection IV: The basionym, author and type of Tetracyclus rupestre
No full textWilliams, David M., Spaulding, Sarah A., Bishop, Ian (2021): Studies on type material from Kützing's diatom collection IV: The basionym, author and type of Tetracyclus rupestre. Phytotaxa 498 (1): 44-50, DOI: 10.11646/phytotaxa.498.1.5, URL: http://dx.doi.org/10.11646/phytotaxa.498.1.
Callers’ experiences of contacting a national suicide prevention helpline
No full textBackground: Helplines are a significant phenomenon in the mixed economy of health and social care. Given the often anonymous and fleeting nature of caller contact, it is difficult to obtain data about their impact and how users perceive their value. This paper reports findings from an online survey of callers contacting Samaritans emotional support services. Aims: To explore the (self-reported) characteristics of callers using a national suicide prevention helpline and their reasons given for contacting the service, and to present the users’ evaluations of the service they received. Methods: Online survey of a self-selected sample of callers. Results: 1,309 responses were received between May 2008 and May 2009. There were high incidences of expressed suicidality and mental health issues. Regular and ongoing use of the service was common. Respondents used the service for complex and varied reasons and often as part of a network of support. Conclusions: Respondents reported high levels of satisfaction with the service and perceived contact to be helpful. Although Samaritans aims to provide a crisis service, many callers do not access this in isolation or as a last resort, instead contacting the organization selectively and often in tandem with other types of support
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