The Sn isotope was produced via fast, 14.1MeV neutron activation of natural tin and studied with a background shielded HPGe detector. To enable time-resolved γ-ray spectroscopy to precisely measure the half-life of Sn, a commercial DAQ was replaced with a CAMAC-based analogue DAQ. The deadtime response of the applied DAQ was verified for the measurement. The half-life of Sn was measured to be 13.91±0.03 days and the I(158.6keV)/I(156.0keV) γ-ray ratio was measured to be 43.6±1.5.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.apradiso.2016.11.010 | DOI Listing |
Nature
January 2025
International Union for the Conservation of Nature (IUCN) Conservation Genetics Specialist Group (CGSG), .
Mitigating loss of genetic diversity is a major global biodiversity challenge. To meet recent international commitments to maintain genetic diversity within species, we need to understand relationships between threats, conservation management and genetic diversity change. Here we conduct a global analysis of genetic diversity change via meta-analysis of all available temporal measures of genetic diversity from more than three decades of research.
View Article and Find Full Text PDFBMC Infect Dis
January 2025
Department of Dermatology, Showa University School of Medicine, 1-5-8, Hatanodai, Shinagawa-ku, Tokyo, 142-8555, Japan.
J Am Med Dir Assoc
January 2025
Department of Medicine for Older People, Amsterdam UMC, Location Vrije Universiteit Amsterdam, Amsterdam, The Netherlands; Amsterdam Public Health, Aging and Later Life, Amsterdam, The Netherlands. Electronic address:
Objective: Psychotropic drugs are frequently prescribed for challenging behavior in residents with dementia in nursing homes. Recommendations on psychotropic drug use for challenging behavior are described in the Dutch multidisciplinary guideline "Problem behavior in dementia." This study aimed to gain insight into the adherence to guideline recommendations on drug type and timing of evaluations of different types of psychotropic drugs for challenging behavior in a national sentinel network of Dutch nursing homes.
View Article and Find Full Text PDFNeurogastroenterol Motil
January 2025
Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA.
Background: The carbon-13 spirulina gastric emptying breath test (GEBT) is approved to identify delayed, but not accelerated, gastric emptying (GE). We compared the utility of the GEBT to scintigraphy for diagnosing abnormal GE in patients with diabetes mellitus.
Methods: Twenty-eight patients with diabetes ate a 230-kcal test meal labeled with technetium 99 m and C-spirulina, after which 10 scintigraphic images and breath samples (baseline, 15, 30, 45, 60, 90, 120, 150, 180, 210, and 240 min) were collected on 2 occasions 1 week apart.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!