نتایج جستجو برای: gc irms
تعداد نتایج: 36392 فیلتر نتایج به سال:
The measurement of amino acid (AA) digestibility protein through direct ileal sampling is highly invasive and inappropriate for vulnerable populations, such as children or elderly. new dual tracer method relies on comparing meal plasma isotopic ratios 1/a test 2/a reference (or AA mix) known digestibility, each one being labelled with a different isotope. aim this study was to compare indirect ...
Thin films of the short single DNA strand, GCAT, in which one of the bases has been removed were bombarded with 3 to 15 eV electrons. The yield functions of the H(-), O(-) and OH(-) ions desorbed from these films exhibit a broad peak near 9 eV, which is attributed to dissociative electron attachment to the basic molecules. Whereas removal of any one of the bases considerably decreases N-glycosi...
Union rent-seeking is considered a tax on f irm returns f rom investments in innovative activity. We examine this proposition by considering the responses o f f irms in a 1985 survey on R&D and product innovation. Consistent with our model, we f ind that innovative activity is significantly less important for union than for similar nonunion firms. We conclude that innovative activity may be an ...
Total circulating 25-hydroxyvitamin D [25(OH)D)] has been associated with lower risk of colorectal cancer. The physiologic mechanism, however, may be more directly related to the free or bioavailable fraction of 25(OH)D, which is influenced by levels of vitamin D binding protein (VDBP). We assessed the association of prediagnosis total, free, and bioavailable 25(OH)D and VDBP with colorectal ca...
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