The United States general aviation fleet is aging with aircraft manufactured 35–39 years ago representing the most prevalent group. Since older aircraft are more prone to airframe corrosion, fatigue, and brittle electrical wiring, the present study was undertaken to determine whether malfunction-related accidents for general aviation aircraft manufactured between 1970 and 1984 were elevated rel...

Abst rac t . We address a current question in econophysics: Are fluctuations in economic indices correlated? To this end, we analyze 1-minute data on a stock index, the Standard and Poor index of the 500 largest stocks. We extend the 6-year data base studied by Mantegna and Stanley by including the 13 years 1984-1996 inclusive, with a recording frequency of 15 seconds. The total number of data ...

Analysis of radio light curves of the γ-ray bright blazar 0202+149 at frequencies of 37, 22, 14.5, 8, and 4.8 GHz during the period 1984-1998 reveals a 4-year cycle of variability with substructure on a shorter time scale of about 1.3-yr. The 4.8-37 GHz spectral index of the source gradually increases from −0.04 (T=1990.2) to 0.4 (T=1996.6) and during outbursts shows strong variations with a ti...

conclusions by controlling the modifiable risk factors and modality of treatment in our study, physicians can reach more effective treatment. results at the end of the study, long-term graft failure was seen in 27 (10.2%) cases. one-year and 2-year graft survival after diagnosis of cancer were 93.6% and 91.7%, respectively. the univariate analysis showed that the incidence of chronic graft loss...

Snow is an important natural reservoir that holds water on the landscape for release later in the season in western North America and other portions of the world. As air temperature increases with global climate change, the character of the generally established seasonal snowcover will be affected. To study the specific response to variable climate, a carefully collected and processed meteorolo...

I mplantable cardioverter-defibrillators (ICDs) are standard treatment for both secondary and primary prevention in patients with malignant ventricular arrhythmias. 2 Inappropriate shock therapy (IST) occurs in a significant proportion of ICD patients, despite newer generation devices and algorithms specifically employed to try and eliminate this. The frequency of IST in patients implanted with...

This is the fourth report of a series on the surveillance of congenital rubella by the National Congenital Rubella Surveillance Programme using methods previously described in the BM7.'-3 We present data on 763 children (including nine co-twins, that is, nine pairs) classified by the Northern and Southern Registries of the National Congenital Rubella Surveillance Programme as cases of confirmed...

368 strains of Shigella were recovered from stool specimens in the Department of Medical Microbiology, Ahmadu Bello University Teaching Hospital, Zaria, during the period January 1980 to December 1984. S. flexneri was found to be the most common (60%) followed by S. boydii (20.7%), S. dysenteriae (14.1%) and S. sonnei (5.2%). Males were more frequently infected (61.4%) than females (38.6%). Max...

An attempt was made to ascertain all cases of Creutzfeldt-Jakob disease occurring in England and Wales during the 5 year period 1980-1984. The mean annual mortality rate was 0.49/million; women were more frequently affected than men. The age-specific mortality rate reached a peak in the seventh decade. A case-control study involving 92 of the 122 definite and probable cases ascertained failed t...

In a 3-year period (1981-1984), 52 male patients aged 10-60 years were treated for fresh gunshot wounds. The injuries varied from minor soft tissue injuries to major organ and tissue damage, and were all sustained by low-velocity missiles. Six of the patients (11.5%) died of their injuries or complications while 46 (88.46%) survived and were discharged after 1-15 weeks (a mean hospital time of ...