MITSuME--Multicolor Imaging Telescopes for Survey and Monstrous Explosions

Development of MITSuME is reported. Two 50-cm optical telescopes have been built at Akeno in Yamanashi prefecture and at Okayama Astrophysical Observatory (OAO) in Okayama prefecture. Three CCD cameras for simultaneous g'RcIc photometry are to be mounted on each focal plane, covering a wide FOV of about 30" x 30". The limiting magnitude at V is fainter than 18. In addition to these two optical telescopes, a 91-cm IR telescope with a 1 deg x 1 deg field of view is being built at OAO, which performs photometry in YJHK bands. These robotic telescopes can start the observation of counterparts of a GRB within a minute from an alert. We aim to obtain photometric redshifts exceeding 10 with these telescopes. The performance and the current construction status of the telescopes are presented.Comment: 4 pages, 3 figures, 4th Workshop on Gamma-Ray Burst in the Afterglow Era, Roma, October 18-22, 200

Optical Spectropolarimetry of SN 2002ap: High Velocity Asymmetric Explosion

We present spectropolarimetry of the Type Ic supernova SN 2002ap and give a preliminary analysis: the data were taken at two epochs, close to and one month later than the visual maximum (2002 February 8). In addition we present June 9 spectropolarimetry without analysis. The data show the development of linear polarization. Distinct polarization profiles were seen only in the O I \lambda 7773 multiplet/Ca II IR triplet absorption trough at maximum light and in the Ca II IR triplet absorption trough a month later, with the latter showing a peak polarization as high as ~2 %. The intrinsic polarization shows three clear position angles: 80 degs for the February continuum, 120 degs for the February line feature, and 150 degs for the March data. We conclude that there are multiple asymmetric components in the ejecta. We suggest that the supernova has a bulk asymmetry with an axial ratio projected on the sky that is different from 1 by of order 10 %. Furthermore, we suggest very speculatively that a high velocity ejecta component moving faster than ~0.115c (e.g., a jet) contributes to polarization in the February epoch.Comment: 7 pages, 3 figures, accepted for publication in the Astrophysical Journal (Letters

Change in serum KL-6 level from baseline is useful for predicting life-threatening EGFR-TKIs induced interstitial lung disease

<p>Abstract</p> <p>Background</p> <p>A high incidence of interstitial lung disease (ILD) has been reported in patients with advanced non-small cell lung cancer (NSCLC) treated with epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs), particularly in Japanese populations. A previous report from our laboratory demonstrated that KL-6 was a useful serum biomarker to assess the severity of drug-induced pneumonitis. Based on these observations, this study was conducted to evaluate the risk factors of EGFR-TKIs induced ILD and the usefulness of monitoring serum KL-6 levels in patients who developed EGFR-TKIs induced ILD in a large multi-institutional setting.</p> <p>Methods</p> <p>We retrospectively reviewed clinical records and radiographies of 341 patients with advanced NSCLCs who were treated with EGFR-TKIs, and analyzed risk factors for the development of EGFR-TKIs induced ILD. Changes of circulating levels of KL-6 were also evaluated in the patients who developed EGFR-TKIs induced ILD.</p> <p>Results</p> <p>Among the 341 patients included in this study, 20 (5.9%) developed EGFR-TKIs induced ILD, and 9 (2.6%) died from ILD. Univariate analyses revealed that only preexisting pulmonary fibrosis was a significant risk factor for the development of EGFR-TKIs induced ILD (<it>p </it>= 0.003). Absolute levels of circulating KL-6 at neither baseline nor the onset of ILD could discriminate between life-threatening and non-life threatening EGFR-TKIs induced ILDs. However, we found that the ratios of serum KL-6 levels just after the onset of EGFR-TKIs induced ILD to those at baseline could quite precisely distinguish survivors from non-survivors (<it>p </it>= 0.006) as well as acute interstitial pneumonia (AIP) pattern from non-AIP pattern (<it>p </it>= 0.005).</p> <p>Conclusions</p> <p>The results of this study strongly support the potential of KL-6 as a diagnostic biomarker for life-threatening EGFR-TKIs induced ILD. Monitoring of KL-6 is also useful to evaluate the progression and severity of EGFR-TKIs induced ILD.</p

Danscross: dancing in a shaking world. The Danscross papers, Beijing 2009

This collaborative, six month project was co-directed by Christopher Bannerman, Head of ResCen Research Centre and Xu Rui, Associate Professor and Vice-Chair, Department of Dance Studies at the Beijing Dance Academy (BDA). It focused on the creation of eight dance works by western and Chinese choreographers which were created to a specific brief, testing Stravinsky's proposition that the imposition of rules sets the artist free. The creative processes were observed by teams of academics from the BDA; the China National Academy for Arts Research; University of California at Los Angeles, Center for World Arts and Cultures; University College Falmouth, Dartington College; Hong Kong Academy for Performing Arts; National University of Singapore; International Institute for Education and Research in Theatre and Film Arts, Waseda University; University of Washington. The researchers contributed to an online record of the project as well as presenting papers at the subsequent conference and for publication. The project's premise was that the empathetic, catalytic space of creative practice offers a unique way of encountering and understanding the other. The examination by international and Chinese academics of the creative strategies of UK and Chinese choreographers, each working with dancers trained in Classical Chinese Dance and/or Asian Folk Dance, provided a metaphor for other acts of translation and adaption. While key challenges today (the pervasiveness of climate change, financial instability and viral infections), are unconfined by national boundaries, the research premise tested the hypothesis that by examining the particular, the panoramic becomes open to speculative enquiry

NEGATIVE DIFFERENTIAL RESISTANCE OF In0.53Ga0.47As/In0.52Al0.48As RESONANT TUNNELING BARRIERS GROWN BY MBE

The quantum-well-width dependence of negative differential resistance (NOR) of an InGaAs/InAlAs resonant tunneling barrier (RTB) structure, latticematched to InP substrates, was studied. The best NDR characteristics ever reported (a peak-to-valley ratio of 5.5 at 300K and 13.3 at 77K with a peak current density of 4.8x104 A/cm2 at both 77K and 300K) have been achieved for a resonant tunneling barrier diode with a quantum well width of 32.2 A and a barrier width of 46.9 A. We found that the band nonparabolicity enhances the electron tunneling of the InAlAs barrier layer