37 research outputs found
Regioselective Synthesis of α-Fluorinated Cyclopentenones by Organocatalytic Difluorocyclopropanation and Fluorine-Directed and Fluorine-Activated Nazarov Cyclization
Microscopic description of nuclei in the middle of the pf-shell by a shell model calculation with G-matrix interaction
Energy levels and electromagnetic properties of with nuclides
are studied in terms of a large-scale shell model calculation, which contains
no newly adjusted parameters. The Kuo-Brown -matrix interaction is shown to
reproduce energy levels of 205 low-lying states of these nuclei. We evaluate
effective charges by incorporating the core-polarization effects caused by the
coupling to GQR's. We then compute E2 moments and transition probabilities. The
M1 moments and transition rates are calculated by quoting the effective
-factors of Towner, which are obtained by taking into account the
meson-exchange and the core-polarization mechanisms. By this microscopic
calculation most of the E2 properties and the magnetic moments are reproduced.
Although there are agreements and disagreements in the M1 transition rates, the
general tendency is reproduced. The and excitation from the
ground state to some low-lying states is also discussed.Comment: 63 pages (LaTeX, to be published in Nucl. Phys. A
Results of the search for inspiraling compact star binaries from TAMA300's observation in 2000-2004
We analyze the data of TAMA300 detector to search for gravitational waves
from inspiraling compact star binaries with masses of the component stars in
the range 1-3Msolar. In this analysis, 2705 hours of data, taken during the
years 2000-2004, are used for the event search. We combine the results of
different observation runs, and obtained a single upper limit on the rate of
the coalescence of compact binaries in our Galaxy of 20 per year at a 90%
confidence level. In this upper limit, the effect of various systematic errors
such like the uncertainty of the background estimation and the calibration of
the detector's sensitivity are included.Comment: 8 pages, 4 Postscript figures, uses revtex4.sty The author list was
correcte
Observation results by the TAMA300 detector on gravitational wave bursts from stellar-core collapses
We present data-analysis schemes and results of observations with the TAMA300
gravitational-wave detector, targeting burst signals from stellar-core collapse
events. In analyses for burst gravitational waves, the detection and
fake-reduction schemes are different from well-investigated ones for a
chirp-wave analysis, because precise waveform templates are not available. We
used an excess-power filter for the extraction of gravitational-wave
candidates, and developed two methods for the reduction of fake events caused
by non-stationary noises of the detector. These analysis schemes were applied
to real data from the TAMA300 interferometric gravitational wave detector. As a
result, fake events were reduced by a factor of about 1000 in the best cases.
The resultant event candidates were interpreted from an astronomical viewpoint.
We set an upper limit of 2.2x10^3 events/sec on the burst gravitational-wave
event rate in our Galaxy with a confidence level of 90%. This work sets a
milestone and prospects on the search for burst gravitational waves, by
establishing an analysis scheme for the observation data from an
interferometric gravitational wave detector
A CASE OF HEPATIC INFLAMMATORY PSEUDO-NEOPLASM DIAGNOSED BY PREOPERATIVE NEEDLE BIOPSY OF THE LIVER
Severity and intractableness of skin infections caused by Panton–Valentine leukocidin‐positive methicillin‐resistant Staphylococcus aureus
Abstract Cases of skin infections caused by Panton–Valentine leukocidin (PVL)‐positive methicillin‐resistant Staphylococcus aureus (MRSA), particularly USA300 clone, have been increasing in Japan. We report that clinical findings of 5 patients with PVL‐positive MRSA and compared to those of four patients with PVL‐negative MRSA. Severities of patients with PVL‐positive MRSA were significantly higher than those of patients with PVL‐negative MRSA. Average durations of antimicrobial therapy for patients with PVL‐positive MRSA were 3.4‐fold longer than those for patients with PVL‐negative MRSA. Our data suggest that PVL‐positive MRSA should be deal with a causative agent for intractable skin infections in Japan likewise other countries
Establishment of cell lines that exhibit pluripotency from miniature swine periodontal ligaments.
Objective: The periodontal ligament (PDL) is a fibrous connective tissue composed of heterogeneous cell types, including PDL fibroblasts. It is not clear whether cells within the PDL fibroblast population retain the potency to differentiate into other cell types. Design: In the present study, clonal cell lines, derived from Clawn miniature swine PDLs, were established by gene transfection for a human telomerase reverse transcriptase, and characterized. Results: These cell lines, denoted TesPDL1–4, had PDL fibroblasts that showed fibroblastic morphology and expressed procollagen α1(I), osteopontin, periostin and alkaline phosphatase mRNA. Under the specific culture conditions, TesPDL3 cells also have the ability to express CD31, vascular endothelial cadherin, von Willebrand factor, osteocalcin, and to form extracellular mineralized nodules. Conclusions: Our data indicate that TesPDL3 cells have unique properties of expressing several phenotype of fibroblasts, vascular endothelial cells and osteoblasts in cultures
The presence of neutrophil extracellular traps in different forms of pyoderma gangrenosum
Abstract We demonstrated that there were abundant neutrophil extracellular traps (NETs) in the skin biopsies from various types of pyoderma gangrenosum (PG), based on the observation of extended and compact areas of immunolabeling of MPO and Cit H3 proteins. We suggest that neutrophils could undergo an aberrant NET formation in the lesions of PG patients, in the vast majority of idiopathic PG. We did not detect NETs in the skin ulcers of an antiphospholipid syndrome patient with a similar appearance to classical ulcerative PG, while rich NETs were found in the various types of PG. These findings suggest that the presence of NETs in skin tissues could serve as a marker for making differential diagnoses of various types of PG from other similar conditions