Hepatitis in Children

115 patients (71 male and 44 female) with infectious hepatitis were hospitalized in Nagasaki University Hospital during 1974-1984. They were all the hospitalized patients in our pediatric department. The total patient was 8150 and that of hepatitis was 115, that is 1.4%. On the classification of hepatitis, infectious mononucleosis patients were the most. Next was HB hepatitis. HA hepatitis were less than we had expected. Generally in Japan, childrens HA hepatitis patients are less usual than HB hepatitis patients. Unknown etiology group patients who are in the early period and are not immunologically diagnosed. Two fluminant hepatits patients died. Transient liver disfunction group was probably the EB virus infection, because they were recovered soon. The neonatal hepatitis patients were examined by viral study but could not be diagnosed what they were. In Europe and America it is said that prognosis is not good, but in our cases it was very good and all were recovered completely as well as other cases in all over Japan. We used dialysable leukocyte extracte (DLE) to chronic HB hepatitis. In normal course of HB hepatits, most of immunologists consider as following ; HB virus infected hepatic cells have normal function but their surface markers are changed immunologically. Then killer cells attack the infected cells and break them. So HB virus are exposed to serum, and made inactivated by antibody. On the other hand cellular immunity may be implicated in the pathogenesis of chronic hepatitis and there may be depression of delayed cutaneous hypersensitivity and T cell function. So we used DLE in order to expect that it would work efficiently to normalize the cellular immumity. We used DLE for 7 patients with HB hepatitis (chronic type). After using DLE the liver functions were normalized in 6 patients. Seroconversion was recognized in 3 cases. HBs Ag disappeared in 3 cases. The period untill seroconversion occurred was rather long, between 2 and 4 years. We conclude DLE seems to be effective

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