41 research outputs found
Near-Infrared Imaging Polarimetry of S106 Cluster-Forming Region with SIRPOL
We present the results of wide-field JHKs polarimetry toward the HII region
S106 using the IRSF (Infrared Survey Facility) telescope. Our polarimetry data
revealed an extended (up to ~ 5') polarized nebula over S106. We confirmed the
position of the illuminating source of most of the nebula as consistent with
S106 IRS4 through an analysis of polarization vectors. The bright portion of
the polarized intensity is consistent with the red wing component of the
molecular gas. Diffuse polarized intensity emission is distributed along the
north--south molecular gas lanes. We found the interaction region between the
radiation from S106 IRS4 and the dense gas. In addition, we also discovered two
small polarization nebulae, SIRN1 and SIRN2, associated with a young stellar
objects (YSO). Aperture polarimetry of point-like sources in this region was
carried out for the first time. The regional magnetic field structures were
derived using point-like source aperture polarimetry, and the magnetic field
structure position angle around the cluster region in S106 was found to be ~
120\arcdeg. The magnetic fields in the cluster region, however, have three
type position angles: ~ 20\arcdeg, ~ 80\arcdeg, and ~ 120\arcdeg. The
present magnetic field structures are consistent with results obtained by
submillimeter continuum observations. We found that the magnetic field
direction in the dense gas region is not consistent with that of the low
density gas region.Comment: 22 pages, 11 figures, accepted for publication in A
Prevalence of Antimicrobial Resistance in Haemophilus influenzae and Streptococcus pneumoniae : Comparison of Clinical Isolates of Japan and The Philippines
For clinical isolates of Haemophilus influenzae and Streptococcus pneumoniae in Japan (356 and 179 strains, respectively) and in the Philippines (98 and 59 strains, respectively), minimum inhibitory concentrations (MICs) of ampicillin, cefazolin, cefotiam, ceftizoxim, ofloxacin, erythromycin, and minocycline were examined. The rates of β-lactamase producing H. influenzae were 17.7% (63/356) in Japan and 2.0% (2/98) in the Philippines, and all of these strains were ampicillin MICs 〓1.56 ugml^. In addition, 5 strains in Japan that lacked β-lactamase activity were also less susceptible to ampicillin. Among the antimicrobials tested, ceftizoxim was the most active against H. influenzae in both countries (MICs 〓0.2 ugml^). Five strains of S. pneumoniae in Japan were relatively resistant to ampicillin (MIC=0.1 ugml^), whereas there were no such strains among isolates in the Philippines. Forty strains (22.3%) and 108 strains (60.3%) among S. pneumoniae in Japan exhibited erythromycin MICs 〓0.2 ugml^ and minocycline MICs 〓1.56 ugml^, respectively. In contrast, all isolates in the Philippines were erythromycin MICs 〓0.05 ugml^ and minocycline MICs 〓0.39 ugml^. Present study indicates that H. influenzae and S. pneumoniae in the Philippines remained still susceptible to the antimicrobials tested except for 2 β-lactamase-positive, ampicillin-resistant H. influenzae, whereas ampicillin-resistant H. influenzae mediated by β-lactamase or non-β-lactamase mechanisms and ampicillin-, erythromycin- or minocycline-resistant S. pneumoniae were included among isolates in Japan
The respiratory microbiome associated with chronic obstructive pulmonary disease comorbidity in non‐small cell lung cancer
博士(医学)甲日本医科大学202