منابع مشابه
The MSK 144 Protocol for
Meteor-scatter communication was first described in the pages of QST in 1953 as a means for communicating on dead 15 and 20 m bands. Hams soon realized that even more impressive results could be obtained at 6 and 2 m, where background noise levels are much lower and useful low-elevation gain is obtainable with relatively modest antennas. Early meteor-scatter (MS) contacts used CW and relied on ...
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The cross section of the Sm(α, γ)Gd reaction has been measured at bombarding energies in the 10.513.4MeV range using an activationmethod based on the off-line α-activity measurement of the Gd residual nucleus. The long measuring time of the α-decay has required the use of etched track detectors. The resulting cross sections and astrophysical S-factors are compared to new statistical model calcu...
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Background: Prenatal diagnosis for Fetal Chromosomal anomalies currently relies on assessment of risk followed by a combination of biochemical and nuchal translucency. Trisomy 21 is the most common trisomy that is associated with intellectual disability. Pregnant women who receive a prenatal diagnosis of trisomy 21 currently have the option of continuing or terminating their pregnancy, but no f...
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Micrographia is a common symptom in Parkinson’s disease, which manifests as either a consistent or progressive reduction in the size of handwriting or both. Neural correlates underlying micrographia remain unclear. We used functional magnetic resonance imaging to investigate micrographia-related neural activity and connectivity modulations. In addition, the effect of attention and dopaminergic ...
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ژورنال
عنوان ژورنال: Inflammatory Bowel Diseases
سال: 2016
ISSN: 1078-0998
DOI: 10.1097/01.mib.0000480275.22000.ba