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High-power CO2 lasers are used extensively in various industrial applications. In most cases they form part of open-beam equipment and have a power of several kilowatts, and are thus designated as Safety Class 4 systems. In addition to the invisible i.r. laser beam (10.6 microns), u.v. radiation and visible light may be emitted. In the present work a power(More)
BACKGROUND The role of an episode of acute kidney injury (AKI) in long-term mortality among initial survivors of critical illness is controversial. We aimed to determine whether AKI is independently associated with decreased survival at 3 years among 30-day survivors of intensive care. RESULTS We included 2336 30-day survivors of intensive care enrolled(More)
Selective late-onset hypolactasia (lactose malabsorption) was examined in a fixed cohort of Finnish adolescents, now aged 17 to 25 years. This was the third examination of the same subjects. In the first examination 10 years ago the prevalence of hypolactasia was 6.2%. In the second examination 5 years ago three more cases of hypolactasia were diagnosed,(More)
Changes in the manubrio-sternal articulation (MSA) were examined radiologically in 87 patients with rheumatoid arthritis and in a control group comprised of 23 patients with osteoarthritis and 72 subjects without joint disease. Erosions, reactive sclerosis and ankylosis were encountered in 70% of the rheumatoid arthritis group and in 27% of controls. There(More)
An experimental system which allows the selective reisolation and structural analysis of a newly made (nascent) segment of pneumococcal peptidoglycan at various times after its incorporation into the preexisting old cell wall was developed. Age-related changes were observed in each one of the major nine wall peptide components resolvable by a(More)